The Independent JPEG Group's JPEG software v9a

Makefile.am

@@ -51,11 +51,11 @@ CONFIGFILES= jconfig.cfg jconfig.bcc jconfig.mc6 jconfig.dj jconfig.wat \
         jconfig.vms
 
 # Support scripts for configure
-CONFIGUREFILES= config.guess config.sub install-sh ltmain.sh depcomp missing
+CONFIGUREFILES= config.guess config.sub install-sh ltmain.sh depcomp \
+        missing ar-lib
 
 # Miscellaneous support files
-OTHERFILES= jconfig.txt ckconfig.c ansi2knr.c ansi2knr.1 jmemdosa.asm \
-        libjpeg.map
+OTHERFILES= jconfig.txt ckconfig.c jmemdosa.asm libjpeg.map
 
 # Test support files
 TESTFILES= testorig.jpg testimg.ppm testimg.bmp testimg.jpg testprog.jpg \

Makefile.in

@@ -1,9 +1,8 @@
-# Makefile.in generated by automake 1.11.2 from Makefile.am.
+# Makefile.in generated by automake 1.14.1 from Makefile.am.
 # @configure_input@
 
-# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
-# 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Free Software
-# Foundation, Inc.
+# Copyright (C) 1994-2013 Free Software Foundation, Inc.
+
 # This Makefile.in is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
@@ -24,6 +23,51 @@
 
 
 VPATH = @srcdir@
+am__is_gnu_make = test -n '$(MAKEFILE_LIST)' && test -n '$(MAKELEVEL)'
+am__make_running_with_option = \
+  case $${target_option-} in \
+      ?) ;; \
+      *) echo "am__make_running_with_option: internal error: invalid" \
+              "target option '$${target_option-}' specified" >&2; \
+         exit 1;; \
+  esac; \
+  has_opt=no; \
+  sane_makeflags=$$MAKEFLAGS; \
+  if $(am__is_gnu_make); then \
+    sane_makeflags=$$MFLAGS; \
+  else \
+    case $$MAKEFLAGS in \
+      *\\[\ \	]*) \
+        bs=\\; \
+        sane_makeflags=`printf '%s\n' "$$MAKEFLAGS" \
+          | sed "s/$$bs$$bs[$$bs $$bs	]*//g"`;; \
+    esac; \
+  fi; \
+  skip_next=no; \
+  strip_trailopt () \
+  { \
+    flg=`printf '%s\n' "$$flg" | sed "s/$$1.*$$//"`; \
+  }; \
+  for flg in $$sane_makeflags; do \
+    test $$skip_next = yes && { skip_next=no; continue; }; \
+    case $$flg in \
+      *=*|--*) continue;; \
+        -*I) strip_trailopt 'I'; skip_next=yes;; \
+      -*I?*) strip_trailopt 'I';; \
+        -*O) strip_trailopt 'O'; skip_next=yes;; \
+      -*O?*) strip_trailopt 'O';; \
+        -*l) strip_trailopt 'l'; skip_next=yes;; \
+      -*l?*) strip_trailopt 'l';; \
+      -[dEDm]) skip_next=yes;; \
+      -[JT]) skip_next=yes;; \
+    esac; \
+    case $$flg in \
+      *$$target_option*) has_opt=yes; break;; \
+    esac; \
+  done; \
+  test $$has_opt = yes
+am__make_dryrun = (target_option=n; $(am__make_running_with_option))
+am__make_keepgoing = (target_option=k; $(am__make_running_with_option))
 pkgdatadir = $(datadir)/@PACKAGE@
 pkgincludedir = $(includedir)/@PACKAGE@
 pkglibdir = $(libdir)/@PACKAGE@
@@ -43,15 +87,14 @@ POST_UNINSTALL = :
 build_triplet = @build@
 host_triplet = @host@
 target_triplet = @target@
-ANSI2KNR = @ANSI2KNR@
 @HAVE_LD_VERSION_SCRIPT_TRUE@am__append_1 = -Wl,--version-script=$(srcdir)/libjpeg.map
 bin_PROGRAMS = cjpeg$(EXEEXT) djpeg$(EXEEXT) jpegtran$(EXEEXT) \
 	rdjpgcom$(EXEEXT) wrjpgcom$(EXEEXT)
 subdir = .
-DIST_COMMON = README $(srcdir)/Makefile.in $(srcdir)/Makefile.am \
+DIST_COMMON = $(srcdir)/Makefile.in $(srcdir)/Makefile.am \
 	$(top_srcdir)/configure $(am__configure_deps) \
-	$(srcdir)/jconfig.cfg ansi2knr.c ansi2knr.1 depcomp \
-	$(include_HEADERS) $(noinst_HEADERS)
+	$(srcdir)/jconfig.cfg depcomp $(include_HEADERS) \
+	$(noinst_HEADERS)
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/configure.ac
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
@@ -93,47 +136,58 @@ am__installdirs = "$(DESTDIR)$(libdir)" "$(DESTDIR)$(bindir)" \
 	"$(DESTDIR)$(man1dir)" "$(DESTDIR)$(includedir)"
 LTLIBRARIES = $(lib_LTLIBRARIES)
 libjpeg_la_LIBADD =
-am__objects_1 = jaricom$U.lo jcapimin$U.lo jcapistd$U.lo jcarith$U.lo \
-	jccoefct$U.lo jccolor$U.lo jcdctmgr$U.lo jchuff$U.lo \
-	jcinit$U.lo jcmainct$U.lo jcmarker$U.lo jcmaster$U.lo \
-	jcomapi$U.lo jcparam$U.lo jcprepct$U.lo jcsample$U.lo \
-	jctrans$U.lo jdapimin$U.lo jdapistd$U.lo jdarith$U.lo \
-	jdatadst$U.lo jdatasrc$U.lo jdcoefct$U.lo jdcolor$U.lo \
-	jddctmgr$U.lo jdhuff$U.lo jdinput$U.lo jdmainct$U.lo \
-	jdmarker$U.lo jdmaster$U.lo jdmerge$U.lo jdpostct$U.lo \
-	jdsample$U.lo jdtrans$U.lo jerror$U.lo jfdctflt$U.lo \
-	jfdctfst$U.lo jfdctint$U.lo jidctflt$U.lo jidctfst$U.lo \
-	jidctint$U.lo jquant1$U.lo jquant2$U.lo jutils$U.lo \
-	jmemmgr$U.lo @MEMORYMGR@$U.lo
+am__objects_1 = jaricom.lo jcapimin.lo jcapistd.lo jcarith.lo \
+	jccoefct.lo jccolor.lo jcdctmgr.lo jchuff.lo jcinit.lo \
+	jcmainct.lo jcmarker.lo jcmaster.lo jcomapi.lo jcparam.lo \
+	jcprepct.lo jcsample.lo jctrans.lo jdapimin.lo jdapistd.lo \
+	jdarith.lo jdatadst.lo jdatasrc.lo jdcoefct.lo jdcolor.lo \
+	jddctmgr.lo jdhuff.lo jdinput.lo jdmainct.lo jdmarker.lo \
+	jdmaster.lo jdmerge.lo jdpostct.lo jdsample.lo jdtrans.lo \
+	jerror.lo jfdctflt.lo jfdctfst.lo jfdctint.lo jidctflt.lo \
+	jidctfst.lo jidctint.lo jquant1.lo jquant2.lo jutils.lo \
+	jmemmgr.lo @MEMORYMGR@.lo
 am_libjpeg_la_OBJECTS = $(am__objects_1)
 libjpeg_la_OBJECTS = $(am_libjpeg_la_OBJECTS)
-AM_V_lt = $(am__v_lt_$(V))
-am__v_lt_ = $(am__v_lt_$(AM_DEFAULT_VERBOSITY))
+AM_V_lt = $(am__v_lt_@AM_V@)
+am__v_lt_ = $(am__v_lt_@AM_DEFAULT_V@)
 am__v_lt_0 = --silent
+am__v_lt_1 = 
 libjpeg_la_LINK = $(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) \
 	$(LIBTOOLFLAGS) --mode=link $(CCLD) $(AM_CFLAGS) $(CFLAGS) \
 	$(libjpeg_la_LDFLAGS) $(LDFLAGS) -o $@
 PROGRAMS = $(bin_PROGRAMS)
-am_cjpeg_OBJECTS = cjpeg$U.$(OBJEXT) rdppm$U.$(OBJEXT) \
-	rdgif$U.$(OBJEXT) rdtarga$U.$(OBJEXT) rdrle$U.$(OBJEXT) \
-	rdbmp$U.$(OBJEXT) rdswitch$U.$(OBJEXT) cdjpeg$U.$(OBJEXT)
+am_cjpeg_OBJECTS = cjpeg.$(OBJEXT) rdppm.$(OBJEXT) rdgif.$(OBJEXT) \
+	rdtarga.$(OBJEXT) rdrle.$(OBJEXT) rdbmp.$(OBJEXT) \
+	rdswitch.$(OBJEXT) cdjpeg.$(OBJEXT)
 cjpeg_OBJECTS = $(am_cjpeg_OBJECTS)
 cjpeg_DEPENDENCIES = libjpeg.la
-am_djpeg_OBJECTS = djpeg$U.$(OBJEXT) wrppm$U.$(OBJEXT) \
-	wrgif$U.$(OBJEXT) wrtarga$U.$(OBJEXT) wrrle$U.$(OBJEXT) \
-	wrbmp$U.$(OBJEXT) rdcolmap$U.$(OBJEXT) cdjpeg$U.$(OBJEXT)
+am_djpeg_OBJECTS = djpeg.$(OBJEXT) wrppm.$(OBJEXT) wrgif.$(OBJEXT) \
+	wrtarga.$(OBJEXT) wrrle.$(OBJEXT) wrbmp.$(OBJEXT) \
+	rdcolmap.$(OBJEXT) cdjpeg.$(OBJEXT)
 djpeg_OBJECTS = $(am_djpeg_OBJECTS)
 djpeg_DEPENDENCIES = libjpeg.la
-am_jpegtran_OBJECTS = jpegtran$U.$(OBJEXT) rdswitch$U.$(OBJEXT) \
-	cdjpeg$U.$(OBJEXT) transupp$U.$(OBJEXT)
+am_jpegtran_OBJECTS = jpegtran.$(OBJEXT) rdswitch.$(OBJEXT) \
+	cdjpeg.$(OBJEXT) transupp.$(OBJEXT)
 jpegtran_OBJECTS = $(am_jpegtran_OBJECTS)
 jpegtran_DEPENDENCIES = libjpeg.la
-am_rdjpgcom_OBJECTS = rdjpgcom$U.$(OBJEXT)
+am_rdjpgcom_OBJECTS = rdjpgcom.$(OBJEXT)
 rdjpgcom_OBJECTS = $(am_rdjpgcom_OBJECTS)
 rdjpgcom_LDADD = $(LDADD)
-am_wrjpgcom_OBJECTS = wrjpgcom$U.$(OBJEXT)
+am_wrjpgcom_OBJECTS = wrjpgcom.$(OBJEXT)
 wrjpgcom_OBJECTS = $(am_wrjpgcom_OBJECTS)
 wrjpgcom_LDADD = $(LDADD)
+AM_V_P = $(am__v_P_@AM_V@)
+am__v_P_ = $(am__v_P_@AM_DEFAULT_V@)
+am__v_P_0 = false
+am__v_P_1 = :
+AM_V_GEN = $(am__v_GEN_@AM_V@)
+am__v_GEN_ = $(am__v_GEN_@AM_DEFAULT_V@)
+am__v_GEN_0 = @echo "  GEN     " $@;
+am__v_GEN_1 = 
+AM_V_at = $(am__v_at_@AM_V@)
+am__v_at_ = $(am__v_at_@AM_DEFAULT_V@)
+am__v_at_0 = @
+am__v_at_1 = 
 DEFAULT_INCLUDES = -I.@am__isrc@
 depcomp = $(SHELL) $(top_srcdir)/depcomp
 am__depfiles_maybe = depfiles
@@ -144,30 +198,51 @@ LTCOMPILE = $(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) \
 	$(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) \
 	$(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) \
 	$(AM_CFLAGS) $(CFLAGS)
-AM_V_CC = $(am__v_CC_$(V))
-am__v_CC_ = $(am__v_CC_$(AM_DEFAULT_VERBOSITY))
+AM_V_CC = $(am__v_CC_@AM_V@)
+am__v_CC_ = $(am__v_CC_@AM_DEFAULT_V@)
 am__v_CC_0 = @echo "  CC      " $@;
-AM_V_at = $(am__v_at_$(V))
-am__v_at_ = $(am__v_at_$(AM_DEFAULT_VERBOSITY))
-am__v_at_0 = @
+am__v_CC_1 = 
 CCLD = $(CC)
 LINK = $(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) \
 	$(LIBTOOLFLAGS) --mode=link $(CCLD) $(AM_CFLAGS) $(CFLAGS) \
 	$(AM_LDFLAGS) $(LDFLAGS) -o $@
-AM_V_CCLD = $(am__v_CCLD_$(V))
-am__v_CCLD_ = $(am__v_CCLD_$(AM_DEFAULT_VERBOSITY))
+AM_V_CCLD = $(am__v_CCLD_@AM_V@)
+am__v_CCLD_ = $(am__v_CCLD_@AM_DEFAULT_V@)
 am__v_CCLD_0 = @echo "  CCLD    " $@;
-AM_V_GEN = $(am__v_GEN_$(V))
-am__v_GEN_ = $(am__v_GEN_$(AM_DEFAULT_VERBOSITY))
-am__v_GEN_0 = @echo "  GEN   " $@;
+am__v_CCLD_1 = 
 SOURCES = $(libjpeg_la_SOURCES) $(cjpeg_SOURCES) $(djpeg_SOURCES) \
 	$(jpegtran_SOURCES) $(rdjpgcom_SOURCES) $(wrjpgcom_SOURCES)
+am__can_run_installinfo = \
+  case $$AM_UPDATE_INFO_DIR in \
+    n|no|NO) false;; \
+    *) (install-info --version) >/dev/null 2>&1;; \
+  esac
 man1dir = $(mandir)/man1
 NROFF = nroff
 MANS = $(man_MANS)
 HEADERS = $(include_HEADERS) $(noinst_HEADERS)
+am__tagged_files = $(HEADERS) $(SOURCES) $(TAGS_FILES) \
+	$(LISP)jconfig.cfg
+# Read a list of newline-separated strings from the standard input,
+# and print each of them once, without duplicates.  Input order is
+# *not* preserved.
+am__uniquify_input = $(AWK) '\
+  BEGIN { nonempty = 0; } \
+  { items[$$0] = 1; nonempty = 1; } \
+  END { if (nonempty) { for (i in items) print i; }; } \
+'
+# Make sure the list of sources is unique.  This is necessary because,
+# e.g., the same source file might be shared among _SOURCES variables
+# for different programs/libraries.
+am__define_uniq_tagged_files = \
+  list='$(am__tagged_files)'; \
+  unique=`for i in $$list; do \
+    if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
+  done | $(am__uniquify_input)`
 ETAGS = etags
 CTAGS = ctags
+CSCOPE = cscope
+AM_RECURSIVE_TARGETS = cscope
 ACLOCAL = @ACLOCAL@
 AMTAR = @AMTAR@
 AM_DEFAULT_VERBOSITY = @AM_DEFAULT_VERBOSITY@
@@ -233,7 +308,6 @@ SED = @SED@
 SET_MAKE = @SET_MAKE@
 SHELL = @SHELL@
 STRIP = @STRIP@
-U = @U@
 VERSION = @VERSION@
 abs_builddir = @abs_builddir@
 abs_srcdir = @abs_srcdir@
@@ -343,12 +417,12 @@ CONFIGFILES = jconfig.cfg jconfig.bcc jconfig.mc6 jconfig.dj jconfig.wat \
 
 
 # Support scripts for configure
-CONFIGUREFILES = config.guess config.sub install-sh ltmain.sh depcomp missing
+CONFIGUREFILES = config.guess config.sub install-sh ltmain.sh depcomp \
+        missing ar-lib
+
 
 # Miscellaneous support files
-OTHERFILES = jconfig.txt ckconfig.c ansi2knr.c ansi2knr.1 jmemdosa.asm \
-        libjpeg.map
-
+OTHERFILES = jconfig.txt ckconfig.c jmemdosa.asm libjpeg.map
 
 # Test support files
 TESTFILES = testorig.jpg testimg.ppm testimg.bmp testimg.jpg testprog.jpg \
@@ -438,8 +512,8 @@ $(ACLOCAL_M4): @MAINTAINER_MODE_TRUE@ $(am__aclocal_m4_deps)
 $(am__aclocal_m4_deps):
 
 jconfig.h: stamp-h1
-	@if test ! -f $@; then rm -f stamp-h1; else :; fi
-	@if test ! -f $@; then $(MAKE) $(AM_MAKEFLAGS) stamp-h1; else :; fi
+	@test -f $@ || rm -f stamp-h1
+	@test -f $@ || $(MAKE) $(AM_MAKEFLAGS) stamp-h1
 
 stamp-h1: $(srcdir)/jconfig.cfg $(top_builddir)/config.status
 	@rm -f stamp-h1
@@ -451,9 +525,9 @@ $(srcdir)/jconfig.cfg: @MAINTAINER_MODE_TRUE@ $(am__configure_deps)
 
 distclean-hdr:
 	-rm -f jconfig.h stamp-h1
+
 install-libLTLIBRARIES: $(lib_LTLIBRARIES)
 	@$(NORMAL_INSTALL)
-	test -z "$(libdir)" || $(MKDIR_P) "$(DESTDIR)$(libdir)"
 	@list='$(lib_LTLIBRARIES)'; test -n "$(libdir)" || list=; \
 	list2=; for p in $$list; do \
 	  if test -f $$p; then \
@@ -461,6 +535,8 @@ install-libLTLIBRARIES: $(lib_LTLIBRARIES)
 	  else :; fi; \
 	done; \
 	test -z "$$list2" || { \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(libdir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(libdir)" || exit 1; \
 	  echo " $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=install $(INSTALL) $(INSTALL_STRIP_FLAG) $$list2 '$(DESTDIR)$(libdir)'"; \
 	  $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=install $(INSTALL) $(INSTALL_STRIP_FLAG) $$list2 "$(DESTDIR)$(libdir)"; \
 	}
@@ -476,24 +552,32 @@ uninstall-libLTLIBRARIES:
 
 clean-libLTLIBRARIES:
 	-test -z "$(lib_LTLIBRARIES)" || rm -f $(lib_LTLIBRARIES)
-	@list='$(lib_LTLIBRARIES)'; for p in $$list; do \
-	  dir="`echo $$p | sed -e 's|/[^/]*$$||'`"; \
-	  test "$$dir" != "$$p" || dir=.; \
-	  echo "rm -f \"$${dir}/so_locations\""; \
-	  rm -f "$${dir}/so_locations"; \
-	done
-libjpeg.la: $(libjpeg_la_OBJECTS) $(libjpeg_la_DEPENDENCIES) 
+	@list='$(lib_LTLIBRARIES)'; \
+	locs=`for p in $$list; do echo $$p; done | \
+	      sed 's|^[^/]*$$|.|; s|/[^/]*$$||; s|$$|/so_locations|' | \
+	      sort -u`; \
+	test -z "$$locs" || { \
+	  echo rm -f $${locs}; \
+	  rm -f $${locs}; \
+	}
+
+libjpeg.la: $(libjpeg_la_OBJECTS) $(libjpeg_la_DEPENDENCIES) $(EXTRA_libjpeg_la_DEPENDENCIES) 
 	$(AM_V_CCLD)$(libjpeg_la_LINK) -rpath $(libdir) $(libjpeg_la_OBJECTS) $(libjpeg_la_LIBADD) $(LIBS)
 install-binPROGRAMS: $(bin_PROGRAMS)
 	@$(NORMAL_INSTALL)
-	test -z "$(bindir)" || $(MKDIR_P) "$(DESTDIR)$(bindir)"
 	@list='$(bin_PROGRAMS)'; test -n "$(bindir)" || list=; \
+	if test -n "$$list"; then \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(bindir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(bindir)" || exit 1; \
+	fi; \
 	for p in $$list; do echo "$$p $$p"; done | \
 	sed 's/$(EXEEXT)$$//' | \
-	while read p p1; do if test -f $$p || test -f $$p1; \
-	  then echo "$$p"; echo "$$p"; else :; fi; \
+	while read p p1; do if test -f $$p \
+	 || test -f $$p1 \
+	  ; then echo "$$p"; echo "$$p"; else :; fi; \
 	done | \
-	sed -e 'p;s,.*/,,;n;h' -e 's|.*|.|' \
+	sed -e 'p;s,.*/,,;n;h' \
+	    -e 's|.*|.|' \
 	    -e 'p;x;s,.*/,,;s/$(EXEEXT)$$//;$(transform);s/$$/$(EXEEXT)/' | \
 	sed 'N;N;N;s,\n, ,g' | \
 	$(AWK) 'BEGIN { files["."] = ""; dirs["."] = 1 } \
@@ -514,7 +598,8 @@ uninstall-binPROGRAMS:
 	@list='$(bin_PROGRAMS)'; test -n "$(bindir)" || list=; \
 	files=`for p in $$list; do echo "$$p"; done | \
 	  sed -e 'h;s,^.*/,,;s/$(EXEEXT)$$//;$(transform)' \
-	      -e 's/$$/$(EXEEXT)/' `; \
+	      -e 's/$$/$(EXEEXT)/' \
+	`; \
 	test -n "$$list" || exit 0; \
 	echo " ( cd '$(DESTDIR)$(bindir)' && rm -f" $$files ")"; \
 	cd "$(DESTDIR)$(bindir)" && rm -f $$files
@@ -527,19 +612,24 @@ clean-binPROGRAMS:
 	list=`for p in $$list; do echo "$$p"; done | sed 's/$(EXEEXT)$$//'`; \
 	echo " rm -f" $$list; \
 	rm -f $$list
-cjpeg$(EXEEXT): $(cjpeg_OBJECTS) $(cjpeg_DEPENDENCIES) 
+
+cjpeg$(EXEEXT): $(cjpeg_OBJECTS) $(cjpeg_DEPENDENCIES) $(EXTRA_cjpeg_DEPENDENCIES) 
 	@rm -f cjpeg$(EXEEXT)
 	$(AM_V_CCLD)$(LINK) $(cjpeg_OBJECTS) $(cjpeg_LDADD) $(LIBS)
-djpeg$(EXEEXT): $(djpeg_OBJECTS) $(djpeg_DEPENDENCIES) 
+
+djpeg$(EXEEXT): $(djpeg_OBJECTS) $(djpeg_DEPENDENCIES) $(EXTRA_djpeg_DEPENDENCIES) 
 	@rm -f djpeg$(EXEEXT)
 	$(AM_V_CCLD)$(LINK) $(djpeg_OBJECTS) $(djpeg_LDADD) $(LIBS)
-jpegtran$(EXEEXT): $(jpegtran_OBJECTS) $(jpegtran_DEPENDENCIES) 
+
+jpegtran$(EXEEXT): $(jpegtran_OBJECTS) $(jpegtran_DEPENDENCIES) $(EXTRA_jpegtran_DEPENDENCIES) 
 	@rm -f jpegtran$(EXEEXT)
 	$(AM_V_CCLD)$(LINK) $(jpegtran_OBJECTS) $(jpegtran_LDADD) $(LIBS)
-rdjpgcom$(EXEEXT): $(rdjpgcom_OBJECTS) $(rdjpgcom_DEPENDENCIES) 
+
+rdjpgcom$(EXEEXT): $(rdjpgcom_OBJECTS) $(rdjpgcom_DEPENDENCIES) $(EXTRA_rdjpgcom_DEPENDENCIES) 
 	@rm -f rdjpgcom$(EXEEXT)
 	$(AM_V_CCLD)$(LINK) $(rdjpgcom_OBJECTS) $(rdjpgcom_LDADD) $(LIBS)
-wrjpgcom$(EXEEXT): $(wrjpgcom_OBJECTS) $(wrjpgcom_DEPENDENCIES) 
+
+wrjpgcom$(EXEEXT): $(wrjpgcom_OBJECTS) $(wrjpgcom_DEPENDENCIES) $(EXTRA_wrjpgcom_DEPENDENCIES) 
 	@rm -f wrjpgcom$(EXEEXT)
 	$(AM_V_CCLD)$(LINK) $(wrjpgcom_OBJECTS) $(wrjpgcom_LDADD) $(LIBS)
 
@@ -548,95 +638,86 @@ mostlyclean-compile:
 
 distclean-compile:
 	-rm -f *.tab.c
-./ansi2knr: ansi2knr.$(OBJEXT)
-	$(LINK) ansi2knr.$(OBJEXT) $(LIBS)
-ansi2knr.$(OBJEXT): $(CONFIG_HEADER)
 
-clean-krextra:
-	-rm -f ansi2knr
-
-mostlyclean-kr:
-	-test "$U" = "" || rm -f *_.c
-
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/@MEMORYMGR@$U.Plo@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/cdjpeg$U.Po@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/cjpeg$U.Po@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/djpeg$U.Po@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/jaricom$U.Plo@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/jcapimin$U.Plo@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/jcapistd$U.Plo@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/jcarith$U.Plo@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/jccoefct$U.Plo@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/jccolor$U.Plo@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/jcdctmgr$U.Plo@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/jchuff$U.Plo@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/jcinit$U.Plo@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/jcmainct$U.Plo@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/jcmarker$U.Plo@am__quote@
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-	$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) `if test -f $(srcdir)/jdatadst.c; then echo $(srcdir)/jdatadst.c; else echo jdatadst.c; fi` | sed 's/^# \([0-9]\)/#line \1/' | $(ANSI2KNR) > $@ || rm -f $@
-jdatasrc_.c: jdatasrc.c $(ANSI2KNR)
-	$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) `if test -f $(srcdir)/jdatasrc.c; then echo $(srcdir)/jdatasrc.c; else echo jdatasrc.c; fi` | sed 's/^# \([0-9]\)/#line \1/' | $(ANSI2KNR) > $@ || rm -f $@
-jdcoefct_.c: jdcoefct.c $(ANSI2KNR)
-	$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) `if test -f $(srcdir)/jdcoefct.c; then echo $(srcdir)/jdcoefct.c; else echo jdcoefct.c; fi` | sed 's/^# \([0-9]\)/#line \1/' | $(ANSI2KNR) > $@ || rm -f $@
-jdcolor_.c: jdcolor.c $(ANSI2KNR)
-	$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) `if test -f $(srcdir)/jdcolor.c; then echo $(srcdir)/jdcolor.c; else echo jdcolor.c; fi` | sed 's/^# \([0-9]\)/#line \1/' | $(ANSI2KNR) > $@ || rm -f $@
-jddctmgr_.c: jddctmgr.c $(ANSI2KNR)
-	$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) `if test -f $(srcdir)/jddctmgr.c; then echo $(srcdir)/jddctmgr.c; else echo jddctmgr.c; fi` | sed 's/^# \([0-9]\)/#line \1/' | $(ANSI2KNR) > $@ || rm -f $@
-jdhuff_.c: jdhuff.c $(ANSI2KNR)
-	$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) `if test -f $(srcdir)/jdhuff.c; then echo $(srcdir)/jdhuff.c; else echo jdhuff.c; fi` | sed 's/^# \([0-9]\)/#line \1/' | $(ANSI2KNR) > $@ || rm -f $@
-jdinput_.c: jdinput.c $(ANSI2KNR)
-	$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) `if test -f $(srcdir)/jdinput.c; then echo $(srcdir)/jdinput.c; else echo jdinput.c; fi` | sed 's/^# \([0-9]\)/#line \1/' | $(ANSI2KNR) > $@ || rm -f $@
-jdmainct_.c: jdmainct.c $(ANSI2KNR)
-	$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) `if test -f $(srcdir)/jdmainct.c; then echo $(srcdir)/jdmainct.c; else echo jdmainct.c; fi` | sed 's/^# \([0-9]\)/#line \1/' | $(ANSI2KNR) > $@ || rm -f $@
-jdmarker_.c: jdmarker.c $(ANSI2KNR)
-	$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) `if test -f $(srcdir)/jdmarker.c; then echo $(srcdir)/jdmarker.c; else echo jdmarker.c; fi` | sed 's/^# \([0-9]\)/#line \1/' | $(ANSI2KNR) > $@ || rm -f $@
-jdmaster_.c: jdmaster.c $(ANSI2KNR)
-	$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) `if test -f $(srcdir)/jdmaster.c; then echo $(srcdir)/jdmaster.c; else echo jdmaster.c; fi` | sed 's/^# \([0-9]\)/#line \1/' | $(ANSI2KNR) > $@ || rm -f $@
-jdmerge_.c: jdmerge.c $(ANSI2KNR)
-	$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) `if test -f $(srcdir)/jdmerge.c; then echo $(srcdir)/jdmerge.c; else echo jdmerge.c; fi` | sed 's/^# \([0-9]\)/#line \1/' | $(ANSI2KNR) > $@ || rm -f $@
-jdpostct_.c: jdpostct.c $(ANSI2KNR)
-	$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) `if test -f $(srcdir)/jdpostct.c; then echo $(srcdir)/jdpostct.c; else echo jdpostct.c; fi` | sed 's/^# \([0-9]\)/#line \1/' | $(ANSI2KNR) > $@ || rm -f $@
-jdsample_.c: jdsample.c $(ANSI2KNR)
-	$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) `if test -f $(srcdir)/jdsample.c; then echo $(srcdir)/jdsample.c; else echo jdsample.c; fi` | sed 's/^# \([0-9]\)/#line \1/' | $(ANSI2KNR) > $@ || rm -f $@
-jdtrans_.c: jdtrans.c $(ANSI2KNR)
-	$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) `if test -f $(srcdir)/jdtrans.c; then echo $(srcdir)/jdtrans.c; else echo jdtrans.c; fi` | sed 's/^# \([0-9]\)/#line \1/' | $(ANSI2KNR) > $@ || rm -f $@
-jerror_.c: jerror.c $(ANSI2KNR)
-	$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) `if test -f $(srcdir)/jerror.c; then echo $(srcdir)/jerror.c; else echo jerror.c; fi` | sed 's/^# \([0-9]\)/#line \1/' | $(ANSI2KNR) > $@ || rm -f $@
-jfdctflt_.c: jfdctflt.c $(ANSI2KNR)
-	$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) `if test -f $(srcdir)/jfdctflt.c; then echo $(srcdir)/jfdctflt.c; else echo jfdctflt.c; fi` | sed 's/^# \([0-9]\)/#line \1/' | $(ANSI2KNR) > $@ || rm -f $@
-jfdctfst_.c: jfdctfst.c $(ANSI2KNR)
-	$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) `if test -f $(srcdir)/jfdctfst.c; then echo $(srcdir)/jfdctfst.c; else echo jfdctfst.c; fi` | sed 's/^# \([0-9]\)/#line \1/' | $(ANSI2KNR) > $@ || rm -f $@
-jfdctint_.c: jfdctint.c $(ANSI2KNR)
-	$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) `if test -f $(srcdir)/jfdctint.c; then echo $(srcdir)/jfdctint.c; else echo jfdctint.c; fi` | sed 's/^# \([0-9]\)/#line \1/' | $(ANSI2KNR) > $@ || rm -f $@
-jidctflt_.c: jidctflt.c $(ANSI2KNR)
-	$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) `if test -f $(srcdir)/jidctflt.c; then echo $(srcdir)/jidctflt.c; else echo jidctflt.c; fi` | sed 's/^# \([0-9]\)/#line \1/' | $(ANSI2KNR) > $@ || rm -f $@
-jidctfst_.c: jidctfst.c $(ANSI2KNR)
-	$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) `if test -f $(srcdir)/jidctfst.c; then echo $(srcdir)/jidctfst.c; else echo jidctfst.c; fi` | sed 's/^# \([0-9]\)/#line \1/' | $(ANSI2KNR) > $@ || rm -f $@
-jidctint_.c: jidctint.c $(ANSI2KNR)
-	$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) `if test -f $(srcdir)/jidctint.c; then echo $(srcdir)/jidctint.c; else echo jidctint.c; fi` | sed 's/^# \([0-9]\)/#line \1/' | $(ANSI2KNR) > $@ || rm -f $@
-jmemmgr_.c: jmemmgr.c $(ANSI2KNR)
-	$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) `if test -f $(srcdir)/jmemmgr.c; then echo $(srcdir)/jmemmgr.c; else echo jmemmgr.c; fi` | sed 's/^# \([0-9]\)/#line \1/' | $(ANSI2KNR) > $@ || rm -f $@
-jpegtran_.c: jpegtran.c $(ANSI2KNR)
-	$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) `if test -f $(srcdir)/jpegtran.c; then echo $(srcdir)/jpegtran.c; else echo jpegtran.c; fi` | sed 's/^# \([0-9]\)/#line \1/' | $(ANSI2KNR) > $@ || rm -f $@
-jquant1_.c: jquant1.c $(ANSI2KNR)
-	$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) `if test -f $(srcdir)/jquant1.c; then echo $(srcdir)/jquant1.c; else echo jquant1.c; fi` | sed 's/^# \([0-9]\)/#line \1/' | $(ANSI2KNR) > $@ || rm -f $@
-jquant2_.c: jquant2.c $(ANSI2KNR)
-	$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) `if test -f $(srcdir)/jquant2.c; then echo $(srcdir)/jquant2.c; else echo jquant2.c; fi` | sed 's/^# \([0-9]\)/#line \1/' | $(ANSI2KNR) > $@ || rm -f $@
-jutils_.c: jutils.c $(ANSI2KNR)
-	$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) `if test -f $(srcdir)/jutils.c; then echo $(srcdir)/jutils.c; else echo jutils.c; fi` | sed 's/^# \([0-9]\)/#line \1/' | $(ANSI2KNR) > $@ || rm -f $@
-rdbmp_.c: rdbmp.c $(ANSI2KNR)
-	$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) `if test -f $(srcdir)/rdbmp.c; then echo $(srcdir)/rdbmp.c; else echo rdbmp.c; fi` | sed 's/^# \([0-9]\)/#line \1/' | $(ANSI2KNR) > $@ || rm -f $@
-rdcolmap_.c: rdcolmap.c $(ANSI2KNR)
-	$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) `if test -f $(srcdir)/rdcolmap.c; then echo $(srcdir)/rdcolmap.c; else echo rdcolmap.c; fi` | sed 's/^# \([0-9]\)/#line \1/' | $(ANSI2KNR) > $@ || rm -f $@
-rdgif_.c: rdgif.c $(ANSI2KNR)
-	$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) `if test -f $(srcdir)/rdgif.c; then echo $(srcdir)/rdgif.c; else echo rdgif.c; fi` | sed 's/^# \([0-9]\)/#line \1/' | $(ANSI2KNR) > $@ || rm -f $@
-rdjpgcom_.c: rdjpgcom.c $(ANSI2KNR)
-	$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) `if test -f $(srcdir)/rdjpgcom.c; then echo $(srcdir)/rdjpgcom.c; else echo rdjpgcom.c; fi` | sed 's/^# \([0-9]\)/#line \1/' | $(ANSI2KNR) > $@ || rm -f $@
-rdppm_.c: rdppm.c $(ANSI2KNR)
-	$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) `if test -f $(srcdir)/rdppm.c; then echo $(srcdir)/rdppm.c; else echo rdppm.c; fi` | sed 's/^# \([0-9]\)/#line \1/' | $(ANSI2KNR) > $@ || rm -f $@
-rdrle_.c: rdrle.c $(ANSI2KNR)
-	$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) `if test -f $(srcdir)/rdrle.c; then echo $(srcdir)/rdrle.c; else echo rdrle.c; fi` | sed 's/^# \([0-9]\)/#line \1/' | $(ANSI2KNR) > $@ || rm -f $@
-rdswitch_.c: rdswitch.c $(ANSI2KNR)
-	$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) `if test -f $(srcdir)/rdswitch.c; then echo $(srcdir)/rdswitch.c; else echo rdswitch.c; fi` | sed 's/^# \([0-9]\)/#line \1/' | $(ANSI2KNR) > $@ || rm -f $@
-rdtarga_.c: rdtarga.c $(ANSI2KNR)
-	$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) `if test -f $(srcdir)/rdtarga.c; then echo $(srcdir)/rdtarga.c; else echo rdtarga.c; fi` | sed 's/^# \([0-9]\)/#line \1/' | $(ANSI2KNR) > $@ || rm -f $@
-transupp_.c: transupp.c $(ANSI2KNR)
-	$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) `if test -f $(srcdir)/transupp.c; then echo $(srcdir)/transupp.c; else echo transupp.c; fi` | sed 's/^# \([0-9]\)/#line \1/' | $(ANSI2KNR) > $@ || rm -f $@
-wrbmp_.c: wrbmp.c $(ANSI2KNR)
-	$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) `if test -f $(srcdir)/wrbmp.c; then echo $(srcdir)/wrbmp.c; else echo wrbmp.c; fi` | sed 's/^# \([0-9]\)/#line \1/' | $(ANSI2KNR) > $@ || rm -f $@
-wrgif_.c: wrgif.c $(ANSI2KNR)
-	$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) `if test -f $(srcdir)/wrgif.c; then echo $(srcdir)/wrgif.c; else echo wrgif.c; fi` | sed 's/^# \([0-9]\)/#line \1/' | $(ANSI2KNR) > $@ || rm -f $@
-wrjpgcom_.c: wrjpgcom.c $(ANSI2KNR)
-	$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) `if test -f $(srcdir)/wrjpgcom.c; then echo $(srcdir)/wrjpgcom.c; else echo wrjpgcom.c; fi` | sed 's/^# \([0-9]\)/#line \1/' | $(ANSI2KNR) > $@ || rm -f $@
-wrppm_.c: wrppm.c $(ANSI2KNR)
-	$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) `if test -f $(srcdir)/wrppm.c; then echo $(srcdir)/wrppm.c; else echo wrppm.c; fi` | sed 's/^# \([0-9]\)/#line \1/' | $(ANSI2KNR) > $@ || rm -f $@
-wrrle_.c: wrrle.c $(ANSI2KNR)
-	$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) `if test -f $(srcdir)/wrrle.c; then echo $(srcdir)/wrrle.c; else echo wrrle.c; fi` | sed 's/^# \([0-9]\)/#line \1/' | $(ANSI2KNR) > $@ || rm -f $@
-wrtarga_.c: wrtarga.c $(ANSI2KNR)
-	$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) `if test -f $(srcdir)/wrtarga.c; then echo $(srcdir)/wrtarga.c; else echo wrtarga.c; fi` | sed 's/^# \([0-9]\)/#line \1/' | $(ANSI2KNR) > $@ || rm -f $@
-@MEMORYMGR@_.$(OBJEXT) @MEMORYMGR@_.lo cdjpeg_.$(OBJEXT) cdjpeg_.lo \
-cjpeg_.$(OBJEXT) cjpeg_.lo djpeg_.$(OBJEXT) djpeg_.lo \
-jaricom_.$(OBJEXT) jaricom_.lo jcapimin_.$(OBJEXT) jcapimin_.lo \
-jcapistd_.$(OBJEXT) jcapistd_.lo jcarith_.$(OBJEXT) jcarith_.lo \
-jccoefct_.$(OBJEXT) jccoefct_.lo jccolor_.$(OBJEXT) jccolor_.lo \
-jcdctmgr_.$(OBJEXT) jcdctmgr_.lo jchuff_.$(OBJEXT) jchuff_.lo \
-jcinit_.$(OBJEXT) jcinit_.lo jcmainct_.$(OBJEXT) jcmainct_.lo \
-jcmarker_.$(OBJEXT) jcmarker_.lo jcmaster_.$(OBJEXT) jcmaster_.lo \
-jcomapi_.$(OBJEXT) jcomapi_.lo jcparam_.$(OBJEXT) jcparam_.lo \
-jcprepct_.$(OBJEXT) jcprepct_.lo jcsample_.$(OBJEXT) jcsample_.lo \
-jctrans_.$(OBJEXT) jctrans_.lo jdapimin_.$(OBJEXT) jdapimin_.lo \
-jdapistd_.$(OBJEXT) jdapistd_.lo jdarith_.$(OBJEXT) jdarith_.lo \
-jdatadst_.$(OBJEXT) jdatadst_.lo jdatasrc_.$(OBJEXT) jdatasrc_.lo \
-jdcoefct_.$(OBJEXT) jdcoefct_.lo jdcolor_.$(OBJEXT) jdcolor_.lo \
-jddctmgr_.$(OBJEXT) jddctmgr_.lo jdhuff_.$(OBJEXT) jdhuff_.lo \
-jdinput_.$(OBJEXT) jdinput_.lo jdmainct_.$(OBJEXT) jdmainct_.lo \
-jdmarker_.$(OBJEXT) jdmarker_.lo jdmaster_.$(OBJEXT) jdmaster_.lo \
-jdmerge_.$(OBJEXT) jdmerge_.lo jdpostct_.$(OBJEXT) jdpostct_.lo \
-jdsample_.$(OBJEXT) jdsample_.lo jdtrans_.$(OBJEXT) jdtrans_.lo \
-jerror_.$(OBJEXT) jerror_.lo jfdctflt_.$(OBJEXT) jfdctflt_.lo \
-jfdctfst_.$(OBJEXT) jfdctfst_.lo jfdctint_.$(OBJEXT) jfdctint_.lo \
-jidctflt_.$(OBJEXT) jidctflt_.lo jidctfst_.$(OBJEXT) jidctfst_.lo \
-jidctint_.$(OBJEXT) jidctint_.lo jmemmgr_.$(OBJEXT) jmemmgr_.lo \
-jpegtran_.$(OBJEXT) jpegtran_.lo jquant1_.$(OBJEXT) jquant1_.lo \
-jquant2_.$(OBJEXT) jquant2_.lo jutils_.$(OBJEXT) jutils_.lo \
-rdbmp_.$(OBJEXT) rdbmp_.lo rdcolmap_.$(OBJEXT) rdcolmap_.lo \
-rdgif_.$(OBJEXT) rdgif_.lo rdjpgcom_.$(OBJEXT) rdjpgcom_.lo \
-rdppm_.$(OBJEXT) rdppm_.lo rdrle_.$(OBJEXT) rdrle_.lo \
-rdswitch_.$(OBJEXT) rdswitch_.lo rdtarga_.$(OBJEXT) rdtarga_.lo \
-transupp_.$(OBJEXT) transupp_.lo wrbmp_.$(OBJEXT) wrbmp_.lo \
-wrgif_.$(OBJEXT) wrgif_.lo wrjpgcom_.$(OBJEXT) wrjpgcom_.lo \
-wrppm_.$(OBJEXT) wrppm_.lo wrrle_.$(OBJEXT) wrrle_.lo \
-wrtarga_.$(OBJEXT) wrtarga_.lo : $(ANSI2KNR)
 
 mostlyclean-libtool:
 	-rm -f *.lo
@@ -818,11 +736,18 @@ distclean-libtool:
 	-rm -f libtool config.lt
 install-man1: $(man_MANS)
 	@$(NORMAL_INSTALL)
-	test -z "$(man1dir)" || $(MKDIR_P) "$(DESTDIR)$(man1dir)"
-	@list=''; test -n "$(man1dir)" || exit 0; \
-	{ for i in $$list; do echo "$$i"; done; \
-	l2='$(man_MANS)'; for i in $$l2; do echo "$$i"; done | \
-	  sed -n '/\.1[a-z]*$$/p'; \
+	@list1=''; \
+	list2='$(man_MANS)'; \
+	test -n "$(man1dir)" \
+	  && test -n "`echo $$list1$$list2`" \
+	  || exit 0; \
+	echo " $(MKDIR_P) '$(DESTDIR)$(man1dir)'"; \
+	$(MKDIR_P) "$(DESTDIR)$(man1dir)" || exit 1; \
+	{ for i in $$list1; do echo "$$i"; done;  \
+	if test -n "$$list2"; then \
+	  for i in $$list2; do echo "$$i"; done \
+	    | sed -n '/\.1[a-z]*$$/p'; \
+	fi; \
 	} | while read p; do \
 	  if test -f $$p; then d=; else d="$(srcdir)/"; fi; \
 	  echo "$$d$$p"; echo "$$p"; \
@@ -854,8 +779,11 @@ uninstall-man1:
 	dir='$(DESTDIR)$(man1dir)'; $(am__uninstall_files_from_dir)
 install-includeHEADERS: $(include_HEADERS)
 	@$(NORMAL_INSTALL)
-	test -z "$(includedir)" || $(MKDIR_P) "$(DESTDIR)$(includedir)"
 	@list='$(include_HEADERS)'; test -n "$(includedir)" || list=; \
+	if test -n "$$list"; then \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(includedir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(includedir)" || exit 1; \
+	fi; \
 	for p in $$list; do \
 	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
 	  echo "$$d$$p"; \
@@ -871,26 +799,15 @@ uninstall-includeHEADERS:
 	files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
 	dir='$(DESTDIR)$(includedir)'; $(am__uninstall_files_from_dir)
 
-ID: $(HEADERS) $(SOURCES) $(LISP) $(TAGS_FILES)
-	list='$(SOURCES) $(HEADERS) $(LISP) $(TAGS_FILES)'; \
-	unique=`for i in $$list; do \
-	    if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
-	  done | \
-	  $(AWK) '{ files[$$0] = 1; nonempty = 1; } \
-	      END { if (nonempty) { for (i in files) print i; }; }'`; \
-	mkid -fID $$unique
-tags: TAGS
+ID: $(am__tagged_files)
+	$(am__define_uniq_tagged_files); mkid -fID $$unique
+tags: tags-am
+TAGS: tags
 
-TAGS:  $(HEADERS) $(SOURCES) jconfig.cfg $(TAGS_DEPENDENCIES) \
-		$(TAGS_FILES) $(LISP)
+tags-am: $(TAGS_DEPENDENCIES) $(am__tagged_files)
 	set x; \
 	here=`pwd`; \
-	list='$(SOURCES) $(HEADERS) jconfig.cfg $(LISP) $(TAGS_FILES)'; \
-	unique=`for i in $$list; do \
-	    if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
-	  done | \
-	  $(AWK) '{ files[$$0] = 1; nonempty = 1; } \
-	      END { if (nonempty) { for (i in files) print i; }; }'`; \
+	$(am__define_uniq_tagged_files); \
 	shift; \
 	if test -z "$(ETAGS_ARGS)$$*$$unique"; then :; else \
 	  test -n "$$unique" || unique=$$empty_fix; \
@@ -902,15 +819,11 @@ TAGS:  $(HEADERS) $(SOURCES) jconfig.cfg $(TAGS_DEPENDENCIES) \
 	      $$unique; \
 	  fi; \
 	fi
-ctags: CTAGS
-CTAGS:  $(HEADERS) $(SOURCES) jconfig.cfg $(TAGS_DEPENDENCIES) \
-		$(TAGS_FILES) $(LISP)
-	list='$(SOURCES) $(HEADERS) jconfig.cfg $(LISP) $(TAGS_FILES)'; \
-	unique=`for i in $$list; do \
-	    if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
-	  done | \
-	  $(AWK) '{ files[$$0] = 1; nonempty = 1; } \
-	      END { if (nonempty) { for (i in files) print i; }; }'`; \
+ctags: ctags-am
+
+CTAGS: ctags
+ctags-am: $(TAGS_DEPENDENCIES) $(am__tagged_files)
+	$(am__define_uniq_tagged_files); \
 	test -z "$(CTAGS_ARGS)$$unique" \
 	  || $(CTAGS) $(CTAGSFLAGS) $(AM_CTAGSFLAGS) $(CTAGS_ARGS) \
 	     $$unique
@@ -919,14 +832,36 @@ GTAGS:
 	here=`$(am__cd) $(top_builddir) && pwd` \
 	  && $(am__cd) $(top_srcdir) \
 	  && gtags -i $(GTAGS_ARGS) "$$here"
+cscope: cscope.files
+	test ! -s cscope.files \
+	  || $(CSCOPE) -b -q $(AM_CSCOPEFLAGS) $(CSCOPEFLAGS) -i cscope.files $(CSCOPE_ARGS)
+clean-cscope:
+	-rm -f cscope.files
+cscope.files: clean-cscope cscopelist
+cscopelist: cscopelist-am
+
+cscopelist-am: $(am__tagged_files)
+	list='$(am__tagged_files)'; \
+	case "$(srcdir)" in \
+	  [\\/]* | ?:[\\/]*) sdir="$(srcdir)" ;; \
+	  *) sdir=$(subdir)/$(srcdir) ;; \
+	esac; \
+	for i in $$list; do \
+	  if test -f "$$i"; then \
+	    echo "$(subdir)/$$i"; \
+	  else \
+	    echo "$$sdir/$$i"; \
+	  fi; \
+	done >> $(top_builddir)/cscope.files
 
 distclean-tags:
 	-rm -f TAGS ID GTAGS GRTAGS GSYMS GPATH tags
+	-rm -f cscope.out cscope.in.out cscope.po.out cscope.files
 check-am: all-am
 	$(MAKE) $(AM_MAKEFLAGS) check-local
 check: check-am
-all-am: Makefile $(ANSI2KNR) $(LTLIBRARIES) $(PROGRAMS) $(MANS) \
-		$(HEADERS) jconfig.h
+all-am: Makefile $(LTLIBRARIES) $(PROGRAMS) $(MANS) $(HEADERS) \
+		jconfig.h
 install-binPROGRAMS: install-libLTLIBRARIES
 
 installdirs:
@@ -966,8 +901,8 @@ maintainer-clean-generic:
 	@echo "it deletes files that may require special tools to rebuild."
 clean: clean-am
 
-clean-am: clean-binPROGRAMS clean-generic clean-krextra \
-	clean-libLTLIBRARIES clean-libtool mostlyclean-am
+clean-am: clean-binPROGRAMS clean-generic clean-libLTLIBRARIES \
+	clean-libtool mostlyclean-am
 
 distclean: distclean-am
 	-rm -f $(am__CONFIG_DISTCLEAN_FILES)
@@ -1025,7 +960,7 @@ maintainer-clean-am: distclean-am maintainer-clean-generic
 
 mostlyclean: mostlyclean-am
 
-mostlyclean-am: mostlyclean-compile mostlyclean-generic mostlyclean-kr \
+mostlyclean-am: mostlyclean-compile mostlyclean-generic \
 	mostlyclean-libtool
 
 pdf: pdf-am
@@ -1043,22 +978,22 @@ uninstall-man: uninstall-man1
 
 .MAKE: all check-am install-am install-strip
 
-.PHONY: CTAGS GTAGS all all-am am--refresh check check-am check-local \
-	clean clean-binPROGRAMS clean-generic clean-krextra \
-	clean-libLTLIBRARIES clean-libtool ctags distclean \
-	distclean-compile distclean-generic distclean-hdr \
-	distclean-libtool distclean-tags dvi dvi-am html html-am info \
-	info-am install install-am install-binPROGRAMS install-data \
-	install-data-am install-data-local install-dvi install-dvi-am \
-	install-exec install-exec-am install-html install-html-am \
-	install-includeHEADERS install-info install-info-am \
-	install-libLTLIBRARIES install-man install-man1 install-pdf \
-	install-pdf-am install-ps install-ps-am install-strip \
-	installcheck installcheck-am installdirs maintainer-clean \
-	maintainer-clean-generic mostlyclean mostlyclean-compile \
-	mostlyclean-generic mostlyclean-kr mostlyclean-libtool pdf \
-	pdf-am ps ps-am tags uninstall uninstall-am \
-	uninstall-binPROGRAMS uninstall-includeHEADERS \
+.PHONY: CTAGS GTAGS TAGS all all-am am--refresh check check-am \
+	check-local clean clean-binPROGRAMS clean-cscope clean-generic \
+	clean-libLTLIBRARIES clean-libtool cscope cscopelist-am ctags \
+	ctags-am distclean distclean-compile distclean-generic \
+	distclean-hdr distclean-libtool distclean-tags dvi dvi-am html \
+	html-am info info-am install install-am install-binPROGRAMS \
+	install-data install-data-am install-data-local install-dvi \
+	install-dvi-am install-exec install-exec-am install-html \
+	install-html-am install-includeHEADERS install-info \
+	install-info-am install-libLTLIBRARIES install-man \
+	install-man1 install-pdf install-pdf-am install-ps \
+	install-ps-am install-strip installcheck installcheck-am \
+	installdirs maintainer-clean maintainer-clean-generic \
+	mostlyclean mostlyclean-compile mostlyclean-generic \
+	mostlyclean-libtool pdf pdf-am ps ps-am tags tags-am uninstall \
+	uninstall-am uninstall-binPROGRAMS uninstall-includeHEADERS \
 	uninstall-libLTLIBRARIES uninstall-local uninstall-man \
 	uninstall-man1
 

README

@@ -1,10 +1,10 @@
 The Independent JPEG Group's JPEG software
 ==========================================
 
-README for release 8d of 15-Jan-2012
+README for release 9a of 19-Jan-2014
 ====================================
 
-This distribution contains the eighth public release of the Independent JPEG
+This distribution contains the ninth public release of the Independent JPEG
 Group's free JPEG software.  You are welcome to redistribute this software and
 to use it for any purpose, subject to the conditions under LEGAL ISSUES, below.
 
@@ -14,7 +14,7 @@ Julian Minguillon, Luis Ortiz, George Phillips, Davide Rossi, Ge' Weijers,
 and other members of the Independent JPEG Group.
 
 IJG is not affiliated with the ISO/IEC JTC1/SC29/WG1 standards committee
-(also known as JPEG, together with ITU-T SG16).
+(previously known as JPEG, together with ITU-T SG16).
 
 
 DOCUMENTATION ROADMAP
@@ -115,7 +115,7 @@ with respect to this software, its quality, accuracy, merchantability, or
 fitness for a particular purpose.  This software is provided "AS IS", and you,
 its user, assume the entire risk as to its quality and accuracy.
 
-This software is copyright (C) 1991-2012, Thomas G. Lane, Guido Vollbeding.
+This software is copyright (C) 1991-2014, Thomas G. Lane, Guido Vollbeding.
 All Rights Reserved except as specified below.
 
 Permission is hereby granted to use, copy, modify, and distribute this
@@ -146,15 +146,6 @@ commercial products, provided that all warranty or liability claims are
 assumed by the product vendor.
 
 
-ansi2knr.c is included in this distribution by permission of L. Peter Deutsch,
-sole proprietor of its copyright holder, Aladdin Enterprises of Menlo Park, CA.
-ansi2knr.c is NOT covered by the above copyright and conditions, but instead
-by the usual distribution terms of the Free Software Foundation; principally,
-that you must include source code if you redistribute it.  (See the file
-ansi2knr.c for full details.)  However, since ansi2knr.c is not needed as part
-of any program generated from the IJG code, this does not limit you more than
-the foregoing paragraphs do.
-
 The Unix configuration script "configure" was produced with GNU Autoconf.
 It is copyright by the Free Software Foundation but is freely distributable.
 The same holds for its supporting scripts (config.guess, config.sub,
@@ -162,11 +153,11 @@ ltmain.sh).  Another support script, install-sh, is copyright by X Consortium
 but is also freely distributable.
 
 The IJG distribution formerly included code to read and write GIF files.
-To avoid entanglement with the Unisys LZW patent, GIF reading support has
-been removed altogether, and the GIF writer has been simplified to produce
-"uncompressed GIFs".  This technique does not use the LZW algorithm; the
-resulting GIF files are larger than usual, but are readable by all standard
-GIF decoders.
+To avoid entanglement with the Unisys LZW patent (now expired), GIF reading
+support has been removed altogether, and the GIF writer has been simplified
+to produce "uncompressed GIFs".  This technique does not use the LZW
+algorithm; the resulting GIF files are larger than usual, but are readable
+by all standard GIF decoders.
 
 We are required to state that
     "The Graphics Interchange Format(c) is the Copyright property of
@@ -222,12 +213,16 @@ Part 1: Requirements and guidelines" and has document numbers ISO/IEC IS
 10918-1, ITU-T T.81.  Part 2 is titled "Digital Compression and Coding of
 Continuous-tone Still Images, Part 2: Compliance testing" and has document
 numbers ISO/IEC IS 10918-2, ITU-T T.83.
-IJG JPEG 8 introduces an implementation of the JPEG SmartScale extension
+IJG JPEG 8 introduced an implementation of the JPEG SmartScale extension
 which is specified in two documents:  A contributed document at ITU and ISO
 with title "ITU-T JPEG-Plus Proposal for Extending ITU-T T.81 for Advanced
 Image Coding", April 2006, Geneva, Switzerland.  The latest version of this
 document is Revision 3.  And a contributed document ISO/IEC JTC1/SC29/WG1 N
 5799 with title "Evolution of JPEG", June/July 2011, Berlin, Germany.
+IJG JPEG 9 introduces a reversible color transform for improved lossless
+compression which is described in a contributed document ISO/IEC JTC1/SC29/
+WG1 N 6080 with title "JPEG 9 Lossless Coding", June/July 2012, Paris,
+France.
 
 The JPEG standard does not specify all details of an interchangeable file
 format.  For the omitted details we follow the "JFIF" conventions, revision
@@ -257,8 +252,8 @@ ARCHIVE LOCATIONS
 The "official" archive site for this software is www.ijg.org.
 The most recent released version can always be found there in
 directory "files".  This particular version will be archived as
-http://www.ijg.org/files/jpegsrc.v8d.tar.gz, and in Windows-compatible
-"zip" archive format as http://www.ijg.org/files/jpegsr8d.zip.
+http://www.ijg.org/files/jpegsrc.v9a.tar.gz, and in Windows-compatible
+"zip" archive format as http://www.ijg.org/files/jpegsr9a.zip.
 
 The JPEG FAQ (Frequently Asked Questions) article is a source of some
 general information about JPEG.
@@ -285,7 +280,7 @@ Thank to Thomas Wiegand and Gary Sullivan for inviting me to the
 Joint Video Team (MPEG & ITU) meeting in Geneva, Switzerland.
 
 Thank to Thomas Richter and Daniel Lee for inviting me to the
-ISO/IEC JTC1/SC29/WG1 (also known as JPEG, together with ITU-T SG16)
+ISO/IEC JTC1/SC29/WG1 (previously known as JPEG, together with ITU-T SG16)
 meeting in Berlin, Germany.
 
 Thank to John Korejwa and Massimo Ballerini for inviting me to
@@ -311,10 +306,10 @@ design and development of this singular software package.
 FILE FORMAT WARS
 ================
 
-The ISO/IEC JTC1/SC29/WG1 standards committee (also known as JPEG, together
-with ITU-T SG16) currently promotes different formats containing the name
-"JPEG" which is misleading because these formats are incompatible with
-original DCT-based JPEG and are based on faulty technologies.
+The ISO/IEC JTC1/SC29/WG1 standards committee (previously known as JPEG,
+together with ITU-T SG16) currently promotes different formats containing
+the name "JPEG" which is misleading because these formats are incompatible
+with original DCT-based JPEG and are based on faulty technologies.
 IJG therefore does not and will not support such momentary mistakes
 (see REFERENCES).
 There exist also distributions under the name "OpenJPEG" promoting such
@@ -327,25 +322,60 @@ Don't use an incompatible file format!
 (In any case, our decoder will remain capable of reading existing JPEG
 image files indefinitely.)
 
-Furthermore, the ISO committee pretends to be "responsible for the popular
-JPEG" in their public reports which is not true because they don't respond to
-actual requirements for the maintenance of the original JPEG specification.
+The ISO committee pretends to be "responsible for the popular JPEG" in their
+public reports which is not true because they don't respond to actual
+requirements for the maintenance of the original JPEG specification.
+Furthermore, the ISO committee pretends to "ensure interoperability" with
+their standards which is not true because their "standards" support only
+application-specific and proprietary use cases and contain mathematically
+incorrect code.
 
-There are currently distributions in circulation containing the name
-"libjpeg" which claim to be a "derivative" or "fork" of the original
-libjpeg, but don't have the features and are incompatible with formats
-supported by actual IJG libjpeg distributions.  Furthermore, they
-violate the license conditions as described under LEGAL ISSUES above.
-We have no sympathy for the release of misleading and illegal
+There are currently different distributions in circulation containing the
+name "libjpeg" which is misleading because they don't have the features and
+are incompatible with formats supported by actual IJG libjpeg distributions.
+One of those fakes is released by members of the ISO committee and just uses
+the name of libjpeg for misdirection of people, similar to the abuse of the
+name JPEG as described above, while having nothing in common with actual IJG
+libjpeg distributions and containing mathematically incorrect code.
+The other one claims to be a "derivative" or "fork" of the original libjpeg,
+but violates the license conditions as described under LEGAL ISSUES above
+and violates basic C programming properties.
+We have no sympathy for the release of misleading, incorrect and illegal
 distributions derived from obsolete code bases.
 Don't use an obsolete code base!
 
+According to the UCC (Uniform Commercial Code) law, IJG has the lawful and
+legal right to foreclose on certain standardization bodies and other
+institutions or corporations that knowingly perform substantial and
+systematic deceptive acts and practices, fraud, theft, and damaging of the
+value of the people of this planet without their knowing, willing and
+intentional consent.
+The titles, ownership, and rights of these institutions and all their assets
+are now duly secured and held in trust for the free people of this planet.
+People of the planet, on every country, may have a financial interest in
+the assets of these former principals, agents, and beneficiaries of the
+foreclosed institutions and corporations.
+IJG asserts what is: that each man, woman, and child has unalienable value
+and rights granted and deposited in them by the Creator and not any one of
+the people is subordinate to any artificial principality, corporate fiction
+or the special interest of another without their appropriate knowing,
+willing and intentional consent made by contract or accommodation agreement.
+IJG expresses that which already was.
+The people have already determined and demanded that public administration
+entities, national governments, and their supporting judicial systems must
+be fully transparent, accountable, and liable.
+IJG has secured the value for all concerned free people of the planet.
+
+A partial list of foreclosed institutions and corporations ("Hall of Shame")
+is currently prepared and will be published later.
+
 
 TO DO
 =====
 
-Version 8 is the first release of a new generation JPEG standard
-to overcome the limitations of the original JPEG specification.
+Version 9 is the second release of a new generation JPEG standard
+to overcome the limitations of the original JPEG specification,
+and is the first true source reference JPEG codec.
 More features are being prepared for coming releases...
 
 Please send bug reports, offers of help, etc. to jpeg-info@jpegclub.org.

ansi2knr.1

@@ -1,36 +0,0 @@
-.TH ANSI2KNR 1 "19 Jan 1996"
-.SH NAME
-ansi2knr \- convert ANSI C to Kernighan & Ritchie C
-.SH SYNOPSIS
-.I ansi2knr
-[--varargs] input_file [output_file]
-.SH DESCRIPTION
-If no output_file is supplied, output goes to stdout.
-.br
-There are no error messages.
-.sp
-.I ansi2knr
-recognizes function definitions by seeing a non-keyword identifier at the left
-margin, followed by a left parenthesis, with a right parenthesis as the last
-character on the line, and with a left brace as the first token on the
-following line (ignoring possible intervening comments).  It will recognize a
-multi-line header provided that no intervening line ends with a left or right
-brace or a semicolon.  These algorithms ignore whitespace and comments, except
-that the function name must be the first thing on the line.
-.sp
-The following constructs will confuse it:
-.br
-     - Any other construct that starts at the left margin and follows the
-above syntax (such as a macro or function call).
-.br
-     - Some macros that tinker with the syntax of the function header.
-.sp
-The --varargs switch is obsolete, and is recognized only for
-backwards compatibility.  The present version of
-.I ansi2knr
-will always attempt to convert a ... argument to va_alist and va_dcl.
-.SH AUTHOR
-L. Peter Deutsch <ghost@aladdin.com> wrote the original ansi2knr and
-continues to maintain the current version; most of the code in the current
-version is his work.  ansi2knr also includes contributions by Francois
-Pinard <pinard@iro.umontreal.ca> and Jim Avera <jima@netcom.com>.

ansi2knr.c

@@ -1,739 +0,0 @@
-/* Copyright (C) 1989, 2000 Aladdin Enterprises.  All rights reserved. */
-
-/*$Id: ansi2knr.c,v 1.14 2003/09/06 05:36:56 eggert Exp $*/
-/* Convert ANSI C function definitions to K&R ("traditional C") syntax */
-
-/*
-ansi2knr is distributed in the hope that it will be useful, but WITHOUT ANY
-WARRANTY.  No author or distributor accepts responsibility to anyone for the
-consequences of using it or for whether it serves any particular purpose or
-works at all, unless he says so in writing.  Refer to the GNU General Public
-License (the "GPL") for full details.
-
-Everyone is granted permission to copy, modify and redistribute ansi2knr,
-but only under the conditions described in the GPL.  A copy of this license
-is supposed to have been given to you along with ansi2knr so you can know
-your rights and responsibilities.  It should be in a file named COPYLEFT,
-or, if there is no file named COPYLEFT, a file named COPYING.  Among other
-things, the copyright notice and this notice must be preserved on all
-copies.
-
-We explicitly state here what we believe is already implied by the GPL: if
-the ansi2knr program is distributed as a separate set of sources and a
-separate executable file which are aggregated on a storage medium together
-with another program, this in itself does not bring the other program under
-the GPL, nor does the mere fact that such a program or the procedures for
-constructing it invoke the ansi2knr executable bring any other part of the
-program under the GPL.
-*/
-
-/*
- * Usage:
-	ansi2knr [--filename FILENAME] [INPUT_FILE [OUTPUT_FILE]]
- * --filename provides the file name for the #line directive in the output,
- * overriding input_file (if present).
- * If no input_file is supplied, input is read from stdin.
- * If no output_file is supplied, output goes to stdout.
- * There are no error messages.
- *
- * ansi2knr recognizes function definitions by seeing a non-keyword
- * identifier at the left margin, followed by a left parenthesis, with a
- * right parenthesis as the last character on the line, and with a left
- * brace as the first token on the following line (ignoring possible
- * intervening comments and/or preprocessor directives), except that a line
- * consisting of only
- *	identifier1(identifier2)
- * will not be considered a function definition unless identifier2 is
- * the word "void", and a line consisting of
- *	identifier1(identifier2, <<arbitrary>>)
- * will not be considered a function definition.
- * ansi2knr will recognize a multi-line header provided that no intervening
- * line ends with a left or right brace or a semicolon.  These algorithms
- * ignore whitespace, comments, and preprocessor directives, except that
- * the function name must be the first thing on the line.  The following
- * constructs will confuse it:
- *	- Any other construct that starts at the left margin and
- *	    follows the above syntax (such as a macro or function call).
- *	- Some macros that tinker with the syntax of function headers.
- */
-
-/*
- * The original and principal author of ansi2knr is L. Peter Deutsch
- * <ghost@aladdin.com>.  Other authors are noted in the change history
- * that follows (in reverse chronological order):
-
-	lpd 2000-04-12 backs out Eggert's changes because of bugs:
-	- concatlits didn't declare the type of its bufend argument;
-	- concatlits didn't recognize when it was inside a comment;
-	- scanstring could scan backward past the beginning of the string; when
-	- the check for \ + newline in scanstring was unnecessary.
-
-	2000-03-05  Paul Eggert  <eggert@twinsun.com>
-
-	Add support for concatenated string literals.
-	* ansi2knr.c (concatlits): New decl.
-	(main): Invoke concatlits to concatenate string literals.
-	(scanstring): Handle backslash-newline correctly.  Work with
-	character constants.  Fix bug when scanning backwards through
-	backslash-quote.  Check for unterminated strings.
-	(convert1): Parse character constants, too.
-	(appendline, concatlits): New functions.
-	* ansi2knr.1: Document this.
-
-	lpd 1999-08-17 added code to allow preprocessor directives
-		wherever comments are allowed
-	lpd 1999-04-12 added minor fixes from Pavel Roskin
-		<pavel_roskin@geocities.com> for clean compilation with
-		gcc -W -Wall
-	lpd 1999-03-22 added hack to recognize lines consisting of
-		identifier1(identifier2, xxx) as *not* being procedures
-	lpd 1999-02-03 made indentation of preprocessor commands consistent
-	lpd 1999-01-28 fixed two bugs: a '/' in an argument list caused an
-		endless loop; quoted strings within an argument list
-		confused the parser
-	lpd 1999-01-24 added a check for write errors on the output,
-		suggested by Jim Meyering <meyering@ascend.com>
-	lpd 1998-11-09 added further hack to recognize identifier(void)
-		as being a procedure
-	lpd 1998-10-23 added hack to recognize lines consisting of
-		identifier1(identifier2) as *not* being procedures
-	lpd 1997-12-08 made input_file optional; only closes input and/or
-		output file if not stdin or stdout respectively; prints
-		usage message on stderr rather than stdout; adds
-		--filename switch (changes suggested by
-		<ceder@lysator.liu.se>)
-	lpd 1996-01-21 added code to cope with not HAVE_CONFIG_H and with
-		compilers that don't understand void, as suggested by
-		Tom Lane
-	lpd 1996-01-15 changed to require that the first non-comment token
-		on the line following a function header be a left brace,
-		to reduce sensitivity to macros, as suggested by Tom Lane
-		<tgl@sss.pgh.pa.us>
-	lpd 1995-06-22 removed #ifndefs whose sole purpose was to define
-		undefined preprocessor symbols as 0; changed all #ifdefs
-		for configuration symbols to #ifs
-	lpd 1995-04-05 changed copyright notice to make it clear that
-		including ansi2knr in a program does not bring the entire
-		program under the GPL
-	lpd 1994-12-18 added conditionals for systems where ctype macros
-		don't handle 8-bit characters properly, suggested by
-		Francois Pinard <pinard@iro.umontreal.ca>;
-		removed --varargs switch (this is now the default)
-	lpd 1994-10-10 removed CONFIG_BROKETS conditional
-	lpd 1994-07-16 added some conditionals to help GNU `configure',
-		suggested by Francois Pinard <pinard@iro.umontreal.ca>;
-		properly erase prototype args in function parameters,
-		contributed by Jim Avera <jima@netcom.com>;
-		correct error in writeblanks (it shouldn't erase EOLs)
-	lpd 1989-xx-xx original version
- */
-
-/* Most of the conditionals here are to make ansi2knr work with */
-/* or without the GNU configure machinery. */
-
-#if HAVE_CONFIG_H
-# include <config.h>
-#endif
-
-#include <stdio.h>
-#include <ctype.h>
-
-#if HAVE_CONFIG_H
-
-/*
-   For properly autoconfiguring ansi2knr, use AC_CONFIG_HEADER(config.h).
-   This will define HAVE_CONFIG_H and so, activate the following lines.
- */
-
-# if STDC_HEADERS || HAVE_STRING_H
-#  include <string.h>
-# else
-#  include <strings.h>
-# endif
-
-#else /* not HAVE_CONFIG_H */
-
-/* Otherwise do it the hard way */
-
-# ifdef BSD
-#  include <strings.h>
-# else
-#  ifdef VMS
-    extern int strlen(), strncmp();
-#  else
-#   include <string.h>
-#  endif
-# endif
-
-#endif /* not HAVE_CONFIG_H */
-
-#if STDC_HEADERS
-# include <stdlib.h>
-#else
-/*
-   malloc and free should be declared in stdlib.h,
-   but if you've got a K&R compiler, they probably aren't.
- */
-# ifdef MSDOS
-#  include <malloc.h>
-# else
-#  ifdef VMS
-     extern char *malloc();
-     extern void free();
-#  else
-     extern char *malloc();
-     extern int free();
-#  endif
-# endif
-
-#endif
-
-/* Define NULL (for *very* old compilers). */
-#ifndef NULL
-# define NULL (0)
-#endif
-
-/*
- * The ctype macros don't always handle 8-bit characters correctly.
- * Compensate for this here.
- */
-#ifdef isascii
-# undef HAVE_ISASCII		/* just in case */
-# define HAVE_ISASCII 1
-#else
-#endif
-#if STDC_HEADERS || !HAVE_ISASCII
-# define is_ascii(c) 1
-#else
-# define is_ascii(c) isascii(c)
-#endif
-
-#define is_space(c) (is_ascii(c) && isspace(c))
-#define is_alpha(c) (is_ascii(c) && isalpha(c))
-#define is_alnum(c) (is_ascii(c) && isalnum(c))
-
-/* Scanning macros */
-#define isidchar(ch) (is_alnum(ch) || (ch) == '_')
-#define isidfirstchar(ch) (is_alpha(ch) || (ch) == '_')
-
-/* Forward references */
-char *ppdirforward();
-char *ppdirbackward();
-char *skipspace();
-char *scanstring();
-int writeblanks();
-int test1();
-int convert1();
-
-/* The main program */
-int
-main(argc, argv)
-    int argc;
-    char *argv[];
-{	FILE *in = stdin;
-	FILE *out = stdout;
-	char *filename = 0;
-	char *program_name = argv[0];
-	char *output_name = 0;
-#define bufsize 5000			/* arbitrary size */
-	char *buf;
-	char *line;
-	char *more;
-	char *usage =
-	  "Usage: ansi2knr [--filename FILENAME] [INPUT_FILE [OUTPUT_FILE]]\n";
-	/*
-	 * In previous versions, ansi2knr recognized a --varargs switch.
-	 * If this switch was supplied, ansi2knr would attempt to convert
-	 * a ... argument to va_alist and va_dcl; if this switch was not
-	 * supplied, ansi2knr would simply drop any such arguments.
-	 * Now, ansi2knr always does this conversion, and we only
-	 * check for this switch for backward compatibility.
-	 */
-	int convert_varargs = 1;
-	int output_error;
-
-	while ( argc > 1 && argv[1][0] == '-' ) {
-	  if ( !strcmp(argv[1], "--varargs") ) {
-	    convert_varargs = 1;
-	    argc--;
-	    argv++;
-	    continue;
-	  }
-	  if ( !strcmp(argv[1], "--filename") && argc > 2 ) {
-	    filename = argv[2];
-	    argc -= 2;
-	    argv += 2;
-	    continue;
-	  }
-	  fprintf(stderr, "%s: Unrecognized switch: %s\n", program_name,
-		  argv[1]);
-	  fprintf(stderr, usage);
-	  exit(1);
-	}
-	switch ( argc )
-	   {
-	default:
-		fprintf(stderr, usage);
-		exit(0);
-	case 3:
-		output_name = argv[2];
-		out = fopen(output_name, "w");
-		if ( out == NULL ) {
-		  fprintf(stderr, "%s: Cannot open output file %s\n",
-			  program_name, output_name);
-		  exit(1);
-		}
-		/* falls through */
-	case 2:
-		in = fopen(argv[1], "r");
-		if ( in == NULL ) {
-		  fprintf(stderr, "%s: Cannot open input file %s\n",
-			  program_name, argv[1]);
-		  exit(1);
-		}
-		if ( filename == 0 )
-		  filename = argv[1];
-		/* falls through */
-	case 1:
-		break;
-	   }
-	if ( filename )
-	  fprintf(out, "#line 1 \"%s\"\n", filename);
-	buf = malloc(bufsize);
-	if ( buf == NULL )
-	   {
-		fprintf(stderr, "Unable to allocate read buffer!\n");
-		exit(1);
-	   }
-	line = buf;
-	while ( fgets(line, (unsigned)(buf + bufsize - line), in) != NULL )
-	   {
-test:		line += strlen(line);
-		switch ( test1(buf) )
-		   {
-		case 2:			/* a function header */
-			convert1(buf, out, 1, convert_varargs);
-			break;
-		case 1:			/* a function */
-			/* Check for a { at the start of the next line. */
-			more = ++line;
-f:			if ( line >= buf + (bufsize - 1) ) /* overflow check */
-			  goto wl;
-			if ( fgets(line, (unsigned)(buf + bufsize - line), in) == NULL )
-			  goto wl;
-			switch ( *skipspace(ppdirforward(more), 1) )
-			  {
-			  case '{':
-			    /* Definitely a function header. */
-			    convert1(buf, out, 0, convert_varargs);
-			    fputs(more, out);
-			    break;
-			  case 0:
-			    /* The next line was blank or a comment: */
-			    /* keep scanning for a non-comment. */
-			    line += strlen(line);
-			    goto f;
-			  default:
-			    /* buf isn't a function header, but */
-			    /* more might be. */
-			    fputs(buf, out);
-			    strcpy(buf, more);
-			    line = buf;
-			    goto test;
-			  }
-			break;
-		case -1:		/* maybe the start of a function */
-			if ( line != buf + (bufsize - 1) ) /* overflow check */
-			  continue;
-			/* falls through */
-		default:		/* not a function */
-wl:			fputs(buf, out);
-			break;
-		   }
-		line = buf;
-	   }
-	if ( line != buf )
-	  fputs(buf, out);
-	free(buf);
-	if ( output_name ) {
-	  output_error = ferror(out);
-	  output_error |= fclose(out);
-	} else {		/* out == stdout */
-	  fflush(out);
-	  output_error = ferror(out);
-	}
-	if ( output_error ) {
-	  fprintf(stderr, "%s: error writing to %s\n", program_name,
-		  (output_name ? output_name : "stdout"));
-	  exit(1);
-	}
-	if ( in != stdin )
-	  fclose(in);
-	return 0;
-}
-
-/*
- * Skip forward or backward over one or more preprocessor directives.
- */
-char *
-ppdirforward(p)
-    char *p;
-{
-    for (; *p == '#'; ++p) {
-	for (; *p != '\r' && *p != '\n'; ++p)
-	    if (*p == 0)
-		return p;
-	if (*p == '\r' && p[1] == '\n')
-	    ++p;
-    }
-    return p;
-}
-char *
-ppdirbackward(p, limit)
-    char *p;
-    char *limit;
-{
-    char *np = p;
-
-    for (;; p = --np) {
-	if (*np == '\n' && np[-1] == '\r')
-	    --np;
-	for (; np > limit && np[-1] != '\r' && np[-1] != '\n'; --np)
-	    if (np[-1] == 0)
-		return np;
-	if (*np != '#')
-	    return p;
-    }
-}
-
-/*
- * Skip over whitespace, comments, and preprocessor directives,
- * in either direction.
- */
-char *
-skipspace(p, dir)
-    char *p;
-    int dir;			/* 1 for forward, -1 for backward */
-{
-    for ( ; ; ) {
-	while ( is_space(*p) )
-	    p += dir;
-	if ( !(*p == '/' && p[dir] == '*') )
-	    break;
-	p += dir;  p += dir;
-	while ( !(*p == '*' && p[dir] == '/') ) {
-	    if ( *p == 0 )
-		return p;	/* multi-line comment?? */
-	    p += dir;
-	}
-	p += dir;  p += dir;
-    }
-    return p;
-}
-
-/* Scan over a quoted string, in either direction. */
-char *
-scanstring(p, dir)
-    char *p;
-    int dir;
-{
-    for (p += dir; ; p += dir)
-	if (*p == '"' && p[-dir] != '\\')
-	    return p + dir;
-}
-
-/*
- * Write blanks over part of a string.
- * Don't overwrite end-of-line characters.
- */
-int
-writeblanks(start, end)
-    char *start;
-    char *end;
-{	char *p;
-	for ( p = start; p < end; p++ )
-	  if ( *p != '\r' && *p != '\n' )
-	    *p = ' ';
-	return 0;
-}
-
-/*
- * Test whether the string in buf is a function definition.
- * The string may contain and/or end with a newline.
- * Return as follows:
- *	0 - definitely not a function definition;
- *	1 - definitely a function definition;
- *	2 - definitely a function prototype (NOT USED);
- *	-1 - may be the beginning of a function definition,
- *		append another line and look again.
- * The reason we don't attempt to convert function prototypes is that
- * Ghostscript's declaration-generating macros look too much like
- * prototypes, and confuse the algorithms.
- */
-int
-test1(buf)
-    char *buf;
-{	char *p = buf;
-	char *bend;
-	char *endfn;
-	int contin;
-
-	if ( !isidfirstchar(*p) )
-	  return 0;		/* no name at left margin */
-	bend = skipspace(ppdirbackward(buf + strlen(buf) - 1, buf), -1);
-	switch ( *bend )
-	   {
-	   case ';': contin = 0 /*2*/; break;
-	   case ')': contin = 1; break;
-	   case '{': return 0;		/* not a function */
-	   case '}': return 0;		/* not a function */
-	   default: contin = -1;
-	   }
-	while ( isidchar(*p) )
-	  p++;
-	endfn = p;
-	p = skipspace(p, 1);
-	if ( *p++ != '(' )
-	  return 0;		/* not a function */
-	p = skipspace(p, 1);
-	if ( *p == ')' )
-	  return 0;		/* no parameters */
-	/* Check that the apparent function name isn't a keyword. */
-	/* We only need to check for keywords that could be followed */
-	/* by a left parenthesis (which, unfortunately, is most of them). */
-	   {	static char *words[] =
-		   {	"asm", "auto", "case", "char", "const", "double",
-			"extern", "float", "for", "if", "int", "long",
-			"register", "return", "short", "signed", "sizeof",
-			"static", "switch", "typedef", "unsigned",
-			"void", "volatile", "while", 0
-		   };
-		char **key = words;
-		char *kp;
-		unsigned len = endfn - buf;
-
-		while ( (kp = *key) != 0 )
-		   {	if ( strlen(kp) == len && !strncmp(kp, buf, len) )
-			  return 0;	/* name is a keyword */
-			key++;
-		   }
-	   }
-	   {
-	       char *id = p;
-	       int len;
-	       /*
-		* Check for identifier1(identifier2) and not
-		* identifier1(void), or identifier1(identifier2, xxxx).
-		*/
-
-	       while ( isidchar(*p) )
-		   p++;
-	       len = p - id;
-	       p = skipspace(p, 1);
-	       if (*p == ',' ||
-		   (*p == ')' && (len != 4 || strncmp(id, "void", 4)))
-		   )
-		   return 0;	/* not a function */
-	   }
-	/*
-	 * If the last significant character was a ), we need to count
-	 * parentheses, because it might be part of a formal parameter
-	 * that is a procedure.
-	 */
-	if (contin > 0) {
-	    int level = 0;
-
-	    for (p = skipspace(buf, 1); *p; p = skipspace(p + 1, 1))
-		level += (*p == '(' ? 1 : *p == ')' ? -1 : 0);
-	    if (level > 0)
-		contin = -1;
-	}
-	return contin;
-}
-
-/* Convert a recognized function definition or header to K&R syntax. */
-int
-convert1(buf, out, header, convert_varargs)
-    char *buf;
-    FILE *out;
-    int header;			/* Boolean */
-    int convert_varargs;	/* Boolean */
-{	char *endfn;
-	char *p;
-	/*
-	 * The breaks table contains pointers to the beginning and end
-	 * of each argument.
-	 */
-	char **breaks;
-	unsigned num_breaks = 2;	/* for testing */
-	char **btop;
-	char **bp;
-	char **ap;
-	char *vararg = 0;
-
-	/* Pre-ANSI implementations don't agree on whether strchr */
-	/* is called strchr or index, so we open-code it here. */
-	for ( endfn = buf; *(endfn++) != '('; )
-	  ;
-top:	p = endfn;
-	breaks = (char **)malloc(sizeof(char *) * num_breaks * 2);
-	if ( breaks == NULL )
-	   {	/* Couldn't allocate break table, give up */
-		fprintf(stderr, "Unable to allocate break table!\n");
-		fputs(buf, out);
-		return -1;
-	   }
-	btop = breaks + num_breaks * 2 - 2;
-	bp = breaks;
-	/* Parse the argument list */
-	do
-	   {	int level = 0;
-		char *lp = NULL;
-		char *rp = NULL;
-		char *end = NULL;
-
-		if ( bp >= btop )
-		   {	/* Filled up break table. */
-			/* Allocate a bigger one and start over. */
-			free((char *)breaks);
-			num_breaks <<= 1;
-			goto top;
-		   }
-		*bp++ = p;
-		/* Find the end of the argument */
-		for ( ; end == NULL; p++ )
-		   {	switch(*p)
-			   {
-			   case ',':
-				if ( !level ) end = p;
-				break;
-			   case '(':
-				if ( !level ) lp = p;
-				level++;
-				break;
-			   case ')':
-				if ( --level < 0 ) end = p;
-				else rp = p;
-				break;
-			   case '/':
-				if (p[1] == '*')
-				    p = skipspace(p, 1) - 1;
-				break;
-			   case '"':
-			       p = scanstring(p, 1) - 1;
-			       break;
-			   default:
-				;
-			   }
-		   }
-		/* Erase any embedded prototype parameters. */
-		if ( lp && rp )
-		  writeblanks(lp + 1, rp);
-		p--;			/* back up over terminator */
-		/* Find the name being declared. */
-		/* This is complicated because of procedure and */
-		/* array modifiers. */
-		for ( ; ; )
-		   {	p = skipspace(p - 1, -1);
-			switch ( *p )
-			   {
-			   case ']':	/* skip array dimension(s) */
-			   case ')':	/* skip procedure args OR name */
-			   {	int level = 1;
-				while ( level )
-				 switch ( *--p )
-				   {
-				   case ']': case ')':
-				       level++;
-				       break;
-				   case '[': case '(':
-				       level--;
-				       break;
-				   case '/':
-				       if (p > buf && p[-1] == '*')
-					   p = skipspace(p, -1) + 1;
-				       break;
-				   case '"':
-				       p = scanstring(p, -1) + 1;
-				       break;
-				   default: ;
-				   }
-			   }
-				if ( *p == '(' && *skipspace(p + 1, 1) == '*' )
-				   {	/* We found the name being declared */
-					while ( !isidfirstchar(*p) )
-					  p = skipspace(p, 1) + 1;
-					goto found;
-				   }
-				break;
-			   default:
-				goto found;
-			   }
-		   }
-found:		if ( *p == '.' && p[-1] == '.' && p[-2] == '.' )
-		  {	if ( convert_varargs )
-			  {	*bp++ = "va_alist";
-				vararg = p-2;
-			  }
-			else
-			  {	p++;
-				if ( bp == breaks + 1 )	/* sole argument */
-				  writeblanks(breaks[0], p);
-				else
-				  writeblanks(bp[-1] - 1, p);
-				bp--;
-			  }
-		   }
-		else
-		   {	while ( isidchar(*p) ) p--;
-			*bp++ = p+1;
-		   }
-		p = end;
-	   }
-	while ( *p++ == ',' );
-	*bp = p;
-	/* Make a special check for 'void' arglist */
-	if ( bp == breaks+2 )
-	   {	p = skipspace(breaks[0], 1);
-		if ( !strncmp(p, "void", 4) )
-		   {	p = skipspace(p+4, 1);
-			if ( p == breaks[2] - 1 )
-			   {	bp = breaks;	/* yup, pretend arglist is empty */
-				writeblanks(breaks[0], p + 1);
-			   }
-		   }
-	   }
-	/* Put out the function name and left parenthesis. */
-	p = buf;
-	while ( p != endfn ) putc(*p, out), p++;
-	/* Put out the declaration. */
-	if ( header )
-	  {	fputs(");", out);
-		for ( p = breaks[0]; *p; p++ )
-		  if ( *p == '\r' || *p == '\n' )
-		    putc(*p, out);
-	  }
-	else
-	  {	for ( ap = breaks+1; ap < bp; ap += 2 )
-		  {	p = *ap;
-			while ( isidchar(*p) )
-			  putc(*p, out), p++;
-			if ( ap < bp - 1 )
-			  fputs(", ", out);
-		  }
-		fputs(")  ", out);
-		/* Put out the argument declarations */
-		for ( ap = breaks+2; ap <= bp; ap += 2 )
-		  (*ap)[-1] = ';';
-		if ( vararg != 0 )
-		  {	*vararg = 0;
-			fputs(breaks[0], out);		/* any prior args */
-			fputs("va_dcl", out);		/* the final arg */
-			fputs(bp[0], out);
-		  }
-		else
-		  fputs(breaks[0], out);
-	  }
-	free((char *)breaks);
-	return 0;
-}

ar-lib

@@ -0,0 +1,270 @@
+#! /bin/sh
+# Wrapper for Microsoft lib.exe
+
+me=ar-lib
+scriptversion=2012-03-01.08; # UTC
+
+# Copyright (C) 2010-2013 Free Software Foundation, Inc.
+# Written by Peter Rosin <peda@lysator.liu.se>.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that program.
+
+# This file is maintained in Automake, please report
+# bugs to <bug-automake@gnu.org> or send patches to
+# <automake-patches@gnu.org>.
+
+
+# func_error message
+func_error ()
+{
+  echo "$me: $1" 1>&2
+  exit 1
+}
+
+file_conv=
+
+# func_file_conv build_file
+# Convert a $build file to $host form and store it in $file
+# Currently only supports Windows hosts.
+func_file_conv ()
+{
+  file=$1
+  case $file in
+    / | /[!/]*) # absolute file, and not a UNC file
+      if test -z "$file_conv"; then
+	# lazily determine how to convert abs files
+	case `uname -s` in
+	  MINGW*)
+	    file_conv=mingw
+	    ;;
+	  CYGWIN*)
+	    file_conv=cygwin
+	    ;;
+	  *)
+	    file_conv=wine
+	    ;;
+	esac
+      fi
+      case $file_conv in
+	mingw)
+	  file=`cmd //C echo "$file " | sed -e 's/"\(.*\) " *$/\1/'`
+	  ;;
+	cygwin)
+	  file=`cygpath -m "$file" || echo "$file"`
+	  ;;
+	wine)
+	  file=`winepath -w "$file" || echo "$file"`
+	  ;;
+      esac
+      ;;
+  esac
+}
+
+# func_at_file at_file operation archive
+# Iterate over all members in AT_FILE performing OPERATION on ARCHIVE
+# for each of them.
+# When interpreting the content of the @FILE, do NOT use func_file_conv,
+# since the user would need to supply preconverted file names to
+# binutils ar, at least for MinGW.
+func_at_file ()
+{
+  operation=$2
+  archive=$3
+  at_file_contents=`cat "$1"`
+  eval set x "$at_file_contents"
+  shift
+
+  for member
+  do
+    $AR -NOLOGO $operation:"$member" "$archive" || exit $?
+  done
+}
+
+case $1 in
+  '')
+     func_error "no command.  Try '$0 --help' for more information."
+     ;;
+  -h | --h*)
+    cat <<EOF
+Usage: $me [--help] [--version] PROGRAM ACTION ARCHIVE [MEMBER...]
+
+Members may be specified in a file named with @FILE.
+EOF
+    exit $?
+    ;;
+  -v | --v*)
+    echo "$me, version $scriptversion"
+    exit $?
+    ;;
+esac
+
+if test $# -lt 3; then
+  func_error "you must specify a program, an action and an archive"
+fi
+
+AR=$1
+shift
+while :
+do
+  if test $# -lt 2; then
+    func_error "you must specify a program, an action and an archive"
+  fi
+  case $1 in
+    -lib | -LIB \
+    | -ltcg | -LTCG \
+    | -machine* | -MACHINE* \
+    | -subsystem* | -SUBSYSTEM* \
+    | -verbose | -VERBOSE \
+    | -wx* | -WX* )
+      AR="$AR $1"
+      shift
+      ;;
+    *)
+      action=$1
+      shift
+      break
+      ;;
+  esac
+done
+orig_archive=$1
+shift
+func_file_conv "$orig_archive"
+archive=$file
+
+# strip leading dash in $action
+action=${action#-}
+
+delete=
+extract=
+list=
+quick=
+replace=
+index=
+create=
+
+while test -n "$action"
+do
+  case $action in
+    d*) delete=yes  ;;
+    x*) extract=yes ;;
+    t*) list=yes    ;;
+    q*) quick=yes   ;;
+    r*) replace=yes ;;
+    s*) index=yes   ;;
+    S*)             ;; # the index is always updated implicitly
+    c*) create=yes  ;;
+    u*)             ;; # TODO: don't ignore the update modifier
+    v*)             ;; # TODO: don't ignore the verbose modifier
+    *)
+      func_error "unknown action specified"
+      ;;
+  esac
+  action=${action#?}
+done
+
+case $delete$extract$list$quick$replace,$index in
+  yes,* | ,yes)
+    ;;
+  yesyes*)
+    func_error "more than one action specified"
+    ;;
+  *)
+    func_error "no action specified"
+    ;;
+esac
+
+if test -n "$delete"; then
+  if test ! -f "$orig_archive"; then
+    func_error "archive not found"
+  fi
+  for member
+  do
+    case $1 in
+      @*)
+        func_at_file "${1#@}" -REMOVE "$archive"
+        ;;
+      *)
+        func_file_conv "$1"
+        $AR -NOLOGO -REMOVE:"$file" "$archive" || exit $?
+        ;;
+    esac
+  done
+
+elif test -n "$extract"; then
+  if test ! -f "$orig_archive"; then
+    func_error "archive not found"
+  fi
+  if test $# -gt 0; then
+    for member
+    do
+      case $1 in
+        @*)
+          func_at_file "${1#@}" -EXTRACT "$archive"
+          ;;
+        *)
+          func_file_conv "$1"
+          $AR -NOLOGO -EXTRACT:"$file" "$archive" || exit $?
+          ;;
+      esac
+    done
+  else
+    $AR -NOLOGO -LIST "$archive" | sed -e 's/\\/\\\\/g' | while read member
+    do
+      $AR -NOLOGO -EXTRACT:"$member" "$archive" || exit $?
+    done
+  fi
+
+elif test -n "$quick$replace"; then
+  if test ! -f "$orig_archive"; then
+    if test -z "$create"; then
+      echo "$me: creating $orig_archive"
+    fi
+    orig_archive=
+  else
+    orig_archive=$archive
+  fi
+
+  for member
+  do
+    case $1 in
+    @*)
+      func_file_conv "${1#@}"
+      set x "$@" "@$file"
+      ;;
+    *)
+      func_file_conv "$1"
+      set x "$@" "$file"
+      ;;
+    esac
+    shift
+    shift
+  done
+
+  if test -n "$orig_archive"; then
+    $AR -NOLOGO -OUT:"$archive" "$orig_archive" "$@" || exit $?
+  else
+    $AR -NOLOGO -OUT:"$archive" "$@" || exit $?
+  fi
+
+elif test -n "$list"; then
+  if test ! -f "$orig_archive"; then
+    func_error "archive not found"
+  fi
+  $AR -NOLOGO -LIST "$archive" || exit $?
+fi

change.log

@@ -1,6 +1,69 @@
 CHANGE LOG for Independent JPEG Group's JPEG software
 
 
+Version 9a  19-Jan-2014
+-----------------------
+
+Add support for wide gamut color spaces (JFIF version 2).
+Improve clarity and accuracy in color conversion modules.
+Note: Requires rebuild of test images.
+
+Extend the bit depth support to all values from 8 to 12
+(BITS_IN_JSAMPLE configuration option in jmorecfg.h).
+jpegtran now supports N bits sample data precision with all N from 8 to 12
+in a single instance.  Thank to Roland Fassauer for inspiration.
+
+Try to resolve issues with new boolean type definition.
+Thank also to v4hn for suggestion.
+
+Enable option to use default Huffman tables for lossless compression
+(for hardware solution), and in this case improve lossless RGB compression
+with reversible color transform.  Thank to Benny Alexandar for hint.
+
+Extend the entropy decoding structure, so that extraneous bytes between
+compressed scan data and following marker can be reported correctly.
+Thank to Nigel Tao for hint.
+
+Add jpegtran -wipe option and extension for -crop.
+Thank to Andrew Senior, David Clunie, and Josef Schmid for suggestion.
+
+
+Version 9  13-Jan-2013
+----------------------
+
+Add cjpeg -rgb1 option to create an RGB JPEG file, and insert
+a simple reversible color transform into the processing which
+significantly improves the compression.
+The recommended command for lossless coding of RGB images is now
+cjpeg -rgb1 -block 1 -arithmetic.
+As said, this option improves the compression significantly, but
+the files are not compatible with JPEG decoders prior to IJG v9
+due to the included color transform.
+The used color transform and marker signaling is compatible with
+other JPEG standards (e.g., JPEG-LS part 2).
+
+Remove the automatic de-ANSI-fication support (Automake 1.12).
+Thank also to Nitin A Kamble for suggestion.
+
+Add remark for jpeg_mem_dest() in jdatadst.c.
+Thank to Elie-Gregoire Khoury for the hint.
+
+Support files with invalid component identifiers (created
+by Adobe PDF).  Thank to Robin Watts for the suggestion.
+
+Adapt full buffer case in jcmainct.c for use with scaled DCT.
+Thank to Sergii Biloshytskyi for the suggestion.
+
+Add type identifier for declaration of noreturn functions.
+Thank to Brett L. Moore for the suggestion.
+
+Correct argument type in format string, avoid compiler warnings.
+Thank to Vincent Torri for hint.
+
+Add missing #include directives in configuration checks, avoid
+configuration errors.  Thank to John Spencer for the hint.
+
+
 Version 8d  15-Jan-2012
 -----------------------
 

cjpeg.1

@@ -1,4 +1,4 @@
-.TH CJPEG 1 "28 August 2011"
+.TH CJPEG 1 "23 November 2013"
 .SH NAME
 cjpeg \- compress an image file to a JPEG file
 .SH SYNOPSIS
@@ -53,9 +53,12 @@ you'll get a smaller JPEG file that takes less time to process.
 Create RGB JPEG file.
 Using this switch suppresses the conversion from RGB
 colorspace input to the default YCbCr JPEG colorspace.
-Use this switch in combination with the
+You can use this switch in combination with the
 .BI \-block " N"
 switch (see below) for lossless JPEG coding.
+See also the
+.B \-rgb1
+switch below.
 .TP
 .B \-optimize
 Perform optimization of entropy encoding parameters.  Without this, default
@@ -166,8 +169,8 @@ Switches for advanced users:
 .B \-arithmetic
 Use arithmetic coding.
 .B Caution:
-arithmetic coded JPEG is not yet widely implemented, so many decoders will be
-unable to view an arithmetic coded JPEG file at all.
+arithmetic coded JPEG is not yet widely implemented, so many decoders will
+be unable to view an arithmetic coded JPEG file at all.
 .TP
 .BI \-block " N"
 Set DCT block size.  All N from 1 to 16 are possible.
@@ -181,6 +184,41 @@ An implementation of the JPEG SmartScale extension is required for this
 feature.  SmartScale enabled JPEG is not yet widely implemented, so many
 decoders will be unable to view a SmartScale extended JPEG file at all.
 .TP
+.B \-rgb1
+Create RGB JPEG file with reversible color transform.
+Works like the
+.B \-rgb
+switch (see above) and inserts a simple reversible color transform
+into the processing which significantly improves the compression.
+Use this switch in combination with the
+.BI \-block " N"
+switch (see above) for lossless JPEG coding.
+.B Caution:
+A decoder with inverse color transform support is required for
+this feature.  Reversible color transform support is not yet
+widely implemented, so many decoders will be unable to view
+a reversible color transformed JPEG file at all.
+.TP
+.B \-bgycc
+Create big gamut YCC JPEG file.
+In this type of encoding the color difference components are quantized
+further by a factor of 2 compared to the normal Cb/Cr values, thus creating
+space to allow larger color values with higher saturation than the normal
+gamut limits to be encoded.  In order to compensate for the loss of color
+fidelity compared to a normal YCC encoded file, the color quantization
+tables can be adjusted accordingly.  For example,
+.B cjpeg \-bgycc \-quality
+80,90 will give similar results as
+.B cjpeg \-quality
+80.
+.B Caution:
+For correct decompression a decoder with big gamut YCC support (JFIF
+version 2) is required.  An old decoder may or may not display a big
+gamut YCC encoded JPEG file, depending on JFIF version check and
+corresponding warning/error configuration.  In case of a granted
+decompression the old decoder will display the image with half
+saturated colors.
+.TP
 .B \-dct int
 Use integer DCT method (default).
 .TP
@@ -337,7 +375,8 @@ Communications of the ACM, April 1991 (vol. 34, no. 4), pp. 30-44.
 .SH AUTHOR
 Independent JPEG Group
 .SH BUGS
-GIF input files are no longer supported, to avoid the Unisys LZW patent.
+GIF input files are no longer supported, to avoid the Unisys LZW patent
+(now expired).
 (Conversion of GIF files to JPEG is usually a bad idea anyway.)
 .PP
 Not all variants of BMP and Targa file formats are supported.

cjpeg.c

@@ -2,7 +2,7 @@
  * cjpeg.c
  *
  * Copyright (C) 1991-1998, Thomas G. Lane.
- * Modified 2003-2011 by Guido Vollbeding.
+ * Modified 2003-2013 by Guido Vollbeding.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
@@ -172,6 +172,10 @@ usage (void)
 #ifdef DCT_SCALING_SUPPORTED
   fprintf(stderr, "  -block N       DCT block size (1..16; default is 8)\n");
 #endif
+#if JPEG_LIB_VERSION_MAJOR >= 9
+  fprintf(stderr, "  -rgb1          Create RGB JPEG file with reversible color transform\n");
+  fprintf(stderr, "  -bgycc         Create big gamut YCC JPEG file\n");
+#endif
 #ifdef DCT_ISLOW_SUPPORTED
   fprintf(stderr, "  -dct int       Use integer DCT method%s\n",
 	  (JDCT_DEFAULT == JDCT_ISLOW ? " (default)" : ""));
@@ -310,10 +314,27 @@ parse_switches (j_compress_ptr cinfo, int argc, char **argv,
       /* Force a monochrome JPEG file to be generated. */
       jpeg_set_colorspace(cinfo, JCS_GRAYSCALE);
 
-    } else if (keymatch(arg, "rgb", 3)) {
+    } else if (keymatch(arg, "rgb", 3) || keymatch(arg, "rgb1", 4)) {
       /* Force an RGB JPEG file to be generated. */
+#if JPEG_LIB_VERSION_MAJOR >= 9
+      /* Note: Entropy table assignment in jpeg_set_colorspace depends
+       * on color_transform.
+       */
+      cinfo->color_transform = arg[3] ? JCT_SUBTRACT_GREEN : JCT_NONE;
+#endif
       jpeg_set_colorspace(cinfo, JCS_RGB);
 
+    } else if (keymatch(arg, "bgycc", 5)) {
+      /* Force a big gamut YCC JPEG file to be generated. */
+#if JPEG_LIB_VERSION_MAJOR >= 9 && \
+      (JPEG_LIB_VERSION_MAJOR > 9 || JPEG_LIB_VERSION_MINOR >= 1)
+      jpeg_set_colorspace(cinfo, JCS_BG_YCC);
+#else
+      fprintf(stderr, "%s: sorry, BG_YCC colorspace not supported\n",
+	      progname);
+      exit(EXIT_FAILURE);
+#endif
+
     } else if (keymatch(arg, "maxmemory", 3)) {
       /* Maximum memory in Kb (or Mb with 'm'). */
       long lval;
@@ -328,7 +349,7 @@ parse_switches (j_compress_ptr cinfo, int argc, char **argv,
       cinfo->mem->max_memory_to_use = lval * 1000L;
 
     } else if (keymatch(arg, "nosmooth", 3)) {
-      /* Suppress fancy downsampling */
+      /* Suppress fancy downsampling. */
       cinfo->do_fancy_downsampling = FALSE;
 
     } else if (keymatch(arg, "optimize", 1) || keymatch(arg, "optimise", 1)) {
@@ -414,7 +435,7 @@ parse_switches (j_compress_ptr cinfo, int argc, char **argv,
       /* Scale the image by a fraction M/N. */
       if (++argn >= argc)	/* advance to next argument */
 	usage();
-      if (sscanf(argv[argn], "%d/%d",
+      if (sscanf(argv[argn], "%u/%u",
 		 &cinfo->scale_num, &cinfo->scale_denom) != 2)
 	usage();
 

compile

@@ -0,0 +1,347 @@
+#! /bin/sh
+# Wrapper for compilers which do not understand '-c -o'.
+
+scriptversion=2012-10-14.11; # UTC
+
+# Copyright (C) 1999-2013 Free Software Foundation, Inc.
+# Written by Tom Tromey <tromey@cygnus.com>.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that program.
+
+# This file is maintained in Automake, please report
+# bugs to <bug-automake@gnu.org> or send patches to
+# <automake-patches@gnu.org>.
+
+nl='
+'
+
+# We need space, tab and new line, in precisely that order.  Quoting is
+# there to prevent tools from complaining about whitespace usage.
+IFS=" ""	$nl"
+
+file_conv=
+
+# func_file_conv build_file lazy
+# Convert a $build file to $host form and store it in $file
+# Currently only supports Windows hosts. If the determined conversion
+# type is listed in (the comma separated) LAZY, no conversion will
+# take place.
+func_file_conv ()
+{
+  file=$1
+  case $file in
+    / | /[!/]*) # absolute file, and not a UNC file
+      if test -z "$file_conv"; then
+	# lazily determine how to convert abs files
+	case `uname -s` in
+	  MINGW*)
+	    file_conv=mingw
+	    ;;
+	  CYGWIN*)
+	    file_conv=cygwin
+	    ;;
+	  *)
+	    file_conv=wine
+	    ;;
+	esac
+      fi
+      case $file_conv/,$2, in
+	*,$file_conv,*)
+	  ;;
+	mingw/*)
+	  file=`cmd //C echo "$file " | sed -e 's/"\(.*\) " *$/\1/'`
+	  ;;
+	cygwin/*)
+	  file=`cygpath -m "$file" || echo "$file"`
+	  ;;
+	wine/*)
+	  file=`winepath -w "$file" || echo "$file"`
+	  ;;
+      esac
+      ;;
+  esac
+}
+
+# func_cl_dashL linkdir
+# Make cl look for libraries in LINKDIR
+func_cl_dashL ()
+{
+  func_file_conv "$1"
+  if test -z "$lib_path"; then
+    lib_path=$file
+  else
+    lib_path="$lib_path;$file"
+  fi
+  linker_opts="$linker_opts -LIBPATH:$file"
+}
+
+# func_cl_dashl library
+# Do a library search-path lookup for cl
+func_cl_dashl ()
+{
+  lib=$1
+  found=no
+  save_IFS=$IFS
+  IFS=';'
+  for dir in $lib_path $LIB
+  do
+    IFS=$save_IFS
+    if $shared && test -f "$dir/$lib.dll.lib"; then
+      found=yes
+      lib=$dir/$lib.dll.lib
+      break
+    fi
+    if test -f "$dir/$lib.lib"; then
+      found=yes
+      lib=$dir/$lib.lib
+      break
+    fi
+    if test -f "$dir/lib$lib.a"; then
+      found=yes
+      lib=$dir/lib$lib.a
+      break
+    fi
+  done
+  IFS=$save_IFS
+
+  if test "$found" != yes; then
+    lib=$lib.lib
+  fi
+}
+
+# func_cl_wrapper cl arg...
+# Adjust compile command to suit cl
+func_cl_wrapper ()
+{
+  # Assume a capable shell
+  lib_path=
+  shared=:
+  linker_opts=
+  for arg
+  do
+    if test -n "$eat"; then
+      eat=
+    else
+      case $1 in
+	-o)
+	  # configure might choose to run compile as 'compile cc -o foo foo.c'.
+	  eat=1
+	  case $2 in
+	    *.o | *.[oO][bB][jJ])
+	      func_file_conv "$2"
+	      set x "$@" -Fo"$file"
+	      shift
+	      ;;
+	    *)
+	      func_file_conv "$2"
+	      set x "$@" -Fe"$file"
+	      shift
+	      ;;
+	  esac
+	  ;;
+	-I)
+	  eat=1
+	  func_file_conv "$2" mingw
+	  set x "$@" -I"$file"
+	  shift
+	  ;;
+	-I*)
+	  func_file_conv "${1#-I}" mingw
+	  set x "$@" -I"$file"
+	  shift
+	  ;;
+	-l)
+	  eat=1
+	  func_cl_dashl "$2"
+	  set x "$@" "$lib"
+	  shift
+	  ;;
+	-l*)
+	  func_cl_dashl "${1#-l}"
+	  set x "$@" "$lib"
+	  shift
+	  ;;
+	-L)
+	  eat=1
+	  func_cl_dashL "$2"
+	  ;;
+	-L*)
+	  func_cl_dashL "${1#-L}"
+	  ;;
+	-static)
+	  shared=false
+	  ;;
+	-Wl,*)
+	  arg=${1#-Wl,}
+	  save_ifs="$IFS"; IFS=','
+	  for flag in $arg; do
+	    IFS="$save_ifs"
+	    linker_opts="$linker_opts $flag"
+	  done
+	  IFS="$save_ifs"
+	  ;;
+	-Xlinker)
+	  eat=1
+	  linker_opts="$linker_opts $2"
+	  ;;
+	-*)
+	  set x "$@" "$1"
+	  shift
+	  ;;
+	*.cc | *.CC | *.cxx | *.CXX | *.[cC]++)
+	  func_file_conv "$1"
+	  set x "$@" -Tp"$file"
+	  shift
+	  ;;
+	*.c | *.cpp | *.CPP | *.lib | *.LIB | *.Lib | *.OBJ | *.obj | *.[oO])
+	  func_file_conv "$1" mingw
+	  set x "$@" "$file"
+	  shift
+	  ;;
+	*)
+	  set x "$@" "$1"
+	  shift
+	  ;;
+      esac
+    fi
+    shift
+  done
+  if test -n "$linker_opts"; then
+    linker_opts="-link$linker_opts"
+  fi
+  exec "$@" $linker_opts
+  exit 1
+}
+
+eat=
+
+case $1 in
+  '')
+     echo "$0: No command.  Try '$0 --help' for more information." 1>&2
+     exit 1;
+     ;;
+  -h | --h*)
+    cat <<\EOF
+Usage: compile [--help] [--version] PROGRAM [ARGS]
+
+Wrapper for compilers which do not understand '-c -o'.
+Remove '-o dest.o' from ARGS, run PROGRAM with the remaining
+arguments, and rename the output as expected.
+
+If you are trying to build a whole package this is not the
+right script to run: please start by reading the file 'INSTALL'.
+
+Report bugs to <bug-automake@gnu.org>.
+EOF
+    exit $?
+    ;;
+  -v | --v*)
+    echo "compile $scriptversion"
+    exit $?
+    ;;
+  cl | *[/\\]cl | cl.exe | *[/\\]cl.exe )
+    func_cl_wrapper "$@"      # Doesn't return...
+    ;;
+esac
+
+ofile=
+cfile=
+
+for arg
+do
+  if test -n "$eat"; then
+    eat=
+  else
+    case $1 in
+      -o)
+	# configure might choose to run compile as 'compile cc -o foo foo.c'.
+	# So we strip '-o arg' only if arg is an object.
+	eat=1
+	case $2 in
+	  *.o | *.obj)
+	    ofile=$2
+	    ;;
+	  *)
+	    set x "$@" -o "$2"
+	    shift
+	    ;;
+	esac
+	;;
+      *.c)
+	cfile=$1
+	set x "$@" "$1"
+	shift
+	;;
+      *)
+	set x "$@" "$1"
+	shift
+	;;
+    esac
+  fi
+  shift
+done
+
+if test -z "$ofile" || test -z "$cfile"; then
+  # If no '-o' option was seen then we might have been invoked from a
+  # pattern rule where we don't need one.  That is ok -- this is a
+  # normal compilation that the losing compiler can handle.  If no
+  # '.c' file was seen then we are probably linking.  That is also
+  # ok.
+  exec "$@"
+fi
+
+# Name of file we expect compiler to create.
+cofile=`echo "$cfile" | sed 's|^.*[\\/]||; s|^[a-zA-Z]:||; s/\.c$/.o/'`
+
+# Create the lock directory.
+# Note: use '[/\\:.-]' here to ensure that we don't use the same name
+# that we are using for the .o file.  Also, base the name on the expected
+# object file name, since that is what matters with a parallel build.
+lockdir=`echo "$cofile" | sed -e 's|[/\\:.-]|_|g'`.d
+while true; do
+  if mkdir "$lockdir" >/dev/null 2>&1; then
+    break
+  fi
+  sleep 1
+done
+# FIXME: race condition here if user kills between mkdir and trap.
+trap "rmdir '$lockdir'; exit 1" 1 2 15
+
+# Run the compile.
+"$@"
+ret=$?
+
+if test -f "$cofile"; then
+  test "$cofile" = "$ofile" || mv "$cofile" "$ofile"
+elif test -f "${cofile}bj"; then
+  test "${cofile}bj" = "$ofile" || mv "${cofile}bj" "$ofile"
+fi
+
+rmdir "$lockdir"
+exit $ret
+
+# Local Variables:
+# mode: shell-script
+# sh-indentation: 2
+# eval: (add-hook 'write-file-hooks 'time-stamp)
+# time-stamp-start: "scriptversion="
+# time-stamp-format: "%:y-%02m-%02d.%02H"
+# time-stamp-time-zone: "UTC"
+# time-stamp-end: "; # UTC"
+# End:

config.guess

@@ -1,14 +1,12 @@
 #! /bin/sh
 # Attempt to guess a canonical system name.
-#   Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
-#   2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,
-#   2011 Free Software Foundation, Inc.
+#   Copyright 1992-2013 Free Software Foundation, Inc.
 
-timestamp='2011-11-11'
+timestamp='2013-11-29'
 
 # This file is free software; you can redistribute it and/or modify it
 # under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 2 of the License, or
+# the Free Software Foundation; either version 3 of the License, or
 # (at your option) any later version.
 #
 # This program is distributed in the hope that it will be useful, but
@@ -17,26 +15,22 @@ timestamp='2011-11-11'
 # General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
-# 02110-1301, USA.
+# along with this program; if not, see <http://www.gnu.org/licenses/>.
 #
 # As a special exception to the GNU General Public License, if you
 # distribute this file as part of a program that contains a
 # configuration script generated by Autoconf, you may include it under
-# the same distribution terms that you use for the rest of that program.
-
-
-# Originally written by Per Bothner.  Please send patches (context
-# diff format) to <config-patches@gnu.org> and include a ChangeLog
-# entry.
+# the same distribution terms that you use for the rest of that
+# program.  This Exception is an additional permission under section 7
+# of the GNU General Public License, version 3 ("GPLv3").
 #
-# This script attempts to guess a canonical system name similar to
-# config.sub.  If it succeeds, it prints the system name on stdout, and
-# exits with 0.  Otherwise, it exits with 1.
+# Originally written by Per Bothner.
 #
 # You can get the latest version of this script from:
 # http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.guess;hb=HEAD
+#
+# Please send patches with a ChangeLog entry to config-patches@gnu.org.
+
 
 me=`echo "$0" | sed -e 's,.*/,,'`
 
@@ -56,9 +50,7 @@ version="\
 GNU config.guess ($timestamp)
 
 Originally written by Per Bothner.
-Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
-2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Free
-Software Foundation, Inc.
+Copyright 1992-2013 Free Software Foundation, Inc.
 
 This is free software; see the source for copying conditions.  There is NO
 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
@@ -140,12 +132,33 @@ UNAME_RELEASE=`(uname -r) 2>/dev/null` || UNAME_RELEASE=unknown
 UNAME_SYSTEM=`(uname -s) 2>/dev/null`  || UNAME_SYSTEM=unknown
 UNAME_VERSION=`(uname -v) 2>/dev/null` || UNAME_VERSION=unknown
 
+case "${UNAME_SYSTEM}" in
+Linux|GNU|GNU/*)
+	# If the system lacks a compiler, then just pick glibc.
+	# We could probably try harder.
+	LIBC=gnu
+
+	eval $set_cc_for_build
+	cat <<-EOF > $dummy.c
+	#include <features.h>
+	#if defined(__UCLIBC__)
+	LIBC=uclibc
+	#elif defined(__dietlibc__)
+	LIBC=dietlibc
+	#else
+	LIBC=gnu
+	#endif
+	EOF
+	eval `$CC_FOR_BUILD -E $dummy.c 2>/dev/null | grep '^LIBC'`
+	;;
+esac
+
 # Note: order is significant - the case branches are not exclusive.
 
 case "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" in
     *:NetBSD:*:*)
 	# NetBSD (nbsd) targets should (where applicable) match one or
-	# more of the tupples: *-*-netbsdelf*, *-*-netbsdaout*,
+	# more of the tuples: *-*-netbsdelf*, *-*-netbsdaout*,
 	# *-*-netbsdecoff* and *-*-netbsd*.  For targets that recently
 	# switched to ELF, *-*-netbsd* would select the old
 	# object file format.  This provides both forward
@@ -202,6 +215,10 @@ case "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" in
 	# CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM is used.
 	echo "${machine}-${os}${release}"
 	exit ;;
+    *:Bitrig:*:*)
+	UNAME_MACHINE_ARCH=`arch | sed 's/Bitrig.//'`
+	echo ${UNAME_MACHINE_ARCH}-unknown-bitrig${UNAME_RELEASE}
+	exit ;;
     *:OpenBSD:*:*)
 	UNAME_MACHINE_ARCH=`arch | sed 's/OpenBSD.//'`
 	echo ${UNAME_MACHINE_ARCH}-unknown-openbsd${UNAME_RELEASE}
@@ -304,7 +321,7 @@ case "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" in
     arm:RISC*:1.[012]*:*|arm:riscix:1.[012]*:*)
 	echo arm-acorn-riscix${UNAME_RELEASE}
 	exit ;;
-    arm:riscos:*:*|arm:RISCOS:*:*)
+    arm*:riscos:*:*|arm*:RISCOS:*:*)
 	echo arm-unknown-riscos
 	exit ;;
     SR2?01:HI-UX/MPP:*:* | SR8000:HI-UX/MPP:*:*)
@@ -803,6 +820,9 @@ EOF
     i*:CYGWIN*:*)
 	echo ${UNAME_MACHINE}-pc-cygwin
 	exit ;;
+    *:MINGW64*:*)
+	echo ${UNAME_MACHINE}-pc-mingw64
+	exit ;;
     *:MINGW*:*)
 	echo ${UNAME_MACHINE}-pc-mingw32
 	exit ;;
@@ -854,15 +874,22 @@ EOF
 	exit ;;
     *:GNU:*:*)
 	# the GNU system
-	echo `echo ${UNAME_MACHINE}|sed -e 's,[-/].*$,,'`-unknown-gnu`echo ${UNAME_RELEASE}|sed -e 's,/.*$,,'`
+	echo `echo ${UNAME_MACHINE}|sed -e 's,[-/].*$,,'`-unknown-${LIBC}`echo ${UNAME_RELEASE}|sed -e 's,/.*$,,'`
 	exit ;;
     *:GNU/*:*:*)
 	# other systems with GNU libc and userland
-	echo ${UNAME_MACHINE}-unknown-`echo ${UNAME_SYSTEM} | sed 's,^[^/]*/,,' | tr '[A-Z]' '[a-z]'``echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'`-gnu
+	echo ${UNAME_MACHINE}-unknown-`echo ${UNAME_SYSTEM} | sed 's,^[^/]*/,,' | tr '[A-Z]' '[a-z]'``echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'`-${LIBC}
 	exit ;;
     i*86:Minix:*:*)
 	echo ${UNAME_MACHINE}-pc-minix
 	exit ;;
+    aarch64:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
+	exit ;;
+    aarch64_be:Linux:*:*)
+	UNAME_MACHINE=aarch64_be
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
+	exit ;;
     alpha:Linux:*:*)
 	case `sed -n '/^cpu model/s/^.*: \(.*\)/\1/p' < /proc/cpuinfo` in
 	  EV5)   UNAME_MACHINE=alphaev5 ;;
@@ -874,59 +901,54 @@ EOF
 	  EV68*) UNAME_MACHINE=alphaev68 ;;
 	esac
 	objdump --private-headers /bin/sh | grep -q ld.so.1
-	if test "$?" = 0 ; then LIBC="libc1" ; else LIBC="" ; fi
-	echo ${UNAME_MACHINE}-unknown-linux-gnu${LIBC}
+	if test "$?" = 0 ; then LIBC="gnulibc1" ; fi
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
+	exit ;;
+    arc:Linux:*:* | arceb:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
 	exit ;;
     arm*:Linux:*:*)
 	eval $set_cc_for_build
 	if echo __ARM_EABI__ | $CC_FOR_BUILD -E - 2>/dev/null \
 	    | grep -q __ARM_EABI__
 	then
-	    echo ${UNAME_MACHINE}-unknown-linux-gnu
+	    echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
 	else
 	    if echo __ARM_PCS_VFP | $CC_FOR_BUILD -E - 2>/dev/null \
 		| grep -q __ARM_PCS_VFP
 	    then
-		echo ${UNAME_MACHINE}-unknown-linux-gnueabi
+		echo ${UNAME_MACHINE}-unknown-linux-${LIBC}eabi
 	    else
-		echo ${UNAME_MACHINE}-unknown-linux-gnueabihf
+		echo ${UNAME_MACHINE}-unknown-linux-${LIBC}eabihf
 	    fi
 	fi
 	exit ;;
     avr32*:Linux:*:*)
-	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
 	exit ;;
     cris:Linux:*:*)
-	echo cris-axis-linux-gnu
+	echo ${UNAME_MACHINE}-axis-linux-${LIBC}
 	exit ;;
     crisv32:Linux:*:*)
-	echo crisv32-axis-linux-gnu
+	echo ${UNAME_MACHINE}-axis-linux-${LIBC}
 	exit ;;
     frv:Linux:*:*)
-	echo frv-unknown-linux-gnu
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
 	exit ;;
     hexagon:Linux:*:*)
-	echo hexagon-unknown-linux-gnu
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
 	exit ;;
     i*86:Linux:*:*)
-	LIBC=gnu
-	eval $set_cc_for_build
-	sed 's/^	//' << EOF >$dummy.c
-	#ifdef __dietlibc__
-	LIBC=dietlibc
-	#endif
-EOF
-	eval `$CC_FOR_BUILD -E $dummy.c 2>/dev/null | grep '^LIBC'`
-	echo "${UNAME_MACHINE}-pc-linux-${LIBC}"
+	echo ${UNAME_MACHINE}-pc-linux-${LIBC}
 	exit ;;
     ia64:Linux:*:*)
-	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
 	exit ;;
     m32r*:Linux:*:*)
-	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
 	exit ;;
     m68*:Linux:*:*)
-	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
 	exit ;;
     mips:Linux:*:* | mips64:Linux:*:*)
 	eval $set_cc_for_build
@@ -945,54 +967,63 @@ EOF
 	#endif
 EOF
 	eval `$CC_FOR_BUILD -E $dummy.c 2>/dev/null | grep '^CPU'`
-	test x"${CPU}" != x && { echo "${CPU}-unknown-linux-gnu"; exit; }
+	test x"${CPU}" != x && { echo "${CPU}-unknown-linux-${LIBC}"; exit; }
 	;;
+    or1k:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
+	exit ;;
     or32:Linux:*:*)
-	echo or32-unknown-linux-gnu
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
 	exit ;;
     padre:Linux:*:*)
-	echo sparc-unknown-linux-gnu
+	echo sparc-unknown-linux-${LIBC}
 	exit ;;
     parisc64:Linux:*:* | hppa64:Linux:*:*)
-	echo hppa64-unknown-linux-gnu
+	echo hppa64-unknown-linux-${LIBC}
 	exit ;;
     parisc:Linux:*:* | hppa:Linux:*:*)
 	# Look for CPU level
 	case `grep '^cpu[^a-z]*:' /proc/cpuinfo 2>/dev/null | cut -d' ' -f2` in
-	  PA7*) echo hppa1.1-unknown-linux-gnu ;;
-	  PA8*) echo hppa2.0-unknown-linux-gnu ;;
-	  *)    echo hppa-unknown-linux-gnu ;;
+	  PA7*) echo hppa1.1-unknown-linux-${LIBC} ;;
+	  PA8*) echo hppa2.0-unknown-linux-${LIBC} ;;
+	  *)    echo hppa-unknown-linux-${LIBC} ;;
 	esac
 	exit ;;
     ppc64:Linux:*:*)
-	echo powerpc64-unknown-linux-gnu
+	echo powerpc64-unknown-linux-${LIBC}
 	exit ;;
     ppc:Linux:*:*)
-	echo powerpc-unknown-linux-gnu
+	echo powerpc-unknown-linux-${LIBC}
+	exit ;;
+    ppc64le:Linux:*:*)
+	echo powerpc64le-unknown-linux-${LIBC}
+	exit ;;
+    ppcle:Linux:*:*)
+	echo powerpcle-unknown-linux-${LIBC}
 	exit ;;
     s390:Linux:*:* | s390x:Linux:*:*)
-	echo ${UNAME_MACHINE}-ibm-linux
+	echo ${UNAME_MACHINE}-ibm-linux-${LIBC}
 	exit ;;
     sh64*:Linux:*:*)
-	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
 	exit ;;
     sh*:Linux:*:*)
-	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
 	exit ;;
     sparc:Linux:*:* | sparc64:Linux:*:*)
-	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
 	exit ;;
     tile*:Linux:*:*)
-	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
 	exit ;;
     vax:Linux:*:*)
-	echo ${UNAME_MACHINE}-dec-linux-gnu
+	echo ${UNAME_MACHINE}-dec-linux-${LIBC}
 	exit ;;
     x86_64:Linux:*:*)
-	echo x86_64-unknown-linux-gnu
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
 	exit ;;
     xtensa*:Linux:*:*)
-	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
 	exit ;;
     i*86:DYNIX/ptx:4*:*)
 	# ptx 4.0 does uname -s correctly, with DYNIX/ptx in there.
@@ -1196,6 +1227,9 @@ EOF
     BePC:Haiku:*:*)	# Haiku running on Intel PC compatible.
 	echo i586-pc-haiku
 	exit ;;
+    x86_64:Haiku:*:*)
+	echo x86_64-unknown-haiku
+	exit ;;
     SX-4:SUPER-UX:*:*)
 	echo sx4-nec-superux${UNAME_RELEASE}
 	exit ;;
@@ -1222,19 +1256,31 @@ EOF
 	exit ;;
     *:Darwin:*:*)
 	UNAME_PROCESSOR=`uname -p` || UNAME_PROCESSOR=unknown
-	case $UNAME_PROCESSOR in
-	    i386)
 	eval $set_cc_for_build
+	if test "$UNAME_PROCESSOR" = unknown ; then
+	    UNAME_PROCESSOR=powerpc
+	fi
+	if test `echo "$UNAME_RELEASE" | sed -e 's/\..*//'` -le 10 ; then
 	    if [ "$CC_FOR_BUILD" != 'no_compiler_found' ]; then
 		if (echo '#ifdef __LP64__'; echo IS_64BIT_ARCH; echo '#endif') | \
 		    (CCOPTS= $CC_FOR_BUILD -E - 2>/dev/null) | \
 		    grep IS_64BIT_ARCH >/dev/null
 		then
-		      UNAME_PROCESSOR="x86_64"
-		  fi
-		fi ;;
-	    unknown) UNAME_PROCESSOR=powerpc ;;
+		    case $UNAME_PROCESSOR in
+			i386) UNAME_PROCESSOR=x86_64 ;;
+			powerpc) UNAME_PROCESSOR=powerpc64 ;;
 		    esac
+		fi
+	    fi
+	elif test "$UNAME_PROCESSOR" = i386 ; then
+	    # Avoid executing cc on OS X 10.9, as it ships with a stub
+	    # that puts up a graphical alert prompting to install
+	    # developer tools.  Any system running Mac OS X 10.7 or
+	    # later (Darwin 11 and later) is required to have a 64-bit
+	    # processor. This is not true of the ARM version of Darwin
+	    # that Apple uses in portable devices.
+	    UNAME_PROCESSOR=x86_64
+	fi
 	echo ${UNAME_PROCESSOR}-apple-darwin${UNAME_RELEASE}
 	exit ;;
     *:procnto*:*:* | *:QNX:[0123456789]*:*)
@@ -1251,7 +1297,7 @@ EOF
     NEO-?:NONSTOP_KERNEL:*:*)
 	echo neo-tandem-nsk${UNAME_RELEASE}
 	exit ;;
-    NSE-?:NONSTOP_KERNEL:*:*)
+    NSE-*:NONSTOP_KERNEL:*:*)
 	echo nse-tandem-nsk${UNAME_RELEASE}
 	exit ;;
     NSR-?:NONSTOP_KERNEL:*:*)
@@ -1320,11 +1366,11 @@ EOF
     i*86:AROS:*:*)
 	echo ${UNAME_MACHINE}-pc-aros
 	exit ;;
+    x86_64:VMkernel:*:*)
+	echo ${UNAME_MACHINE}-unknown-esx
+	exit ;;
 esac
 
-#echo '(No uname command or uname output not recognized.)' 1>&2
-#echo "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" 1>&2
-
 eval $set_cc_for_build
 cat >$dummy.c <<EOF
 #ifdef _SEQUENT_

config.sub

@@ -1,38 +1,31 @@
 #! /bin/sh
 # Configuration validation subroutine script.
-#   Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
-#   2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,
-#   2011 Free Software Foundation, Inc.
+#   Copyright 1992-2013 Free Software Foundation, Inc.
 
-timestamp='2011-11-11'
+timestamp='2013-10-01'
 
-# This file is (in principle) common to ALL GNU software.
-# The presence of a machine in this file suggests that SOME GNU software
-# can handle that machine.  It does not imply ALL GNU software can.
-#
-# This file is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 2 of the License, or
+# This file is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
 # (at your option) any later version.
 #
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
-# 02110-1301, USA.
+# along with this program; if not, see <http://www.gnu.org/licenses/>.
 #
 # As a special exception to the GNU General Public License, if you
 # distribute this file as part of a program that contains a
 # configuration script generated by Autoconf, you may include it under
-# the same distribution terms that you use for the rest of that program.
+# the same distribution terms that you use for the rest of that
+# program.  This Exception is an additional permission under section 7
+# of the GNU General Public License, version 3 ("GPLv3").
 
 
-# Please send patches to <config-patches@gnu.org>.  Submit a context
-# diff and a properly formatted GNU ChangeLog entry.
+# Please send patches with a ChangeLog entry to config-patches@gnu.org.
 #
 # Configuration subroutine to validate and canonicalize a configuration type.
 # Supply the specified configuration type as an argument.
@@ -75,9 +68,7 @@ Report bugs and patches to <config-patches@gnu.org>."
 version="\
 GNU config.sub ($timestamp)
 
-Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
-2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Free
-Software Foundation, Inc.
+Copyright 1992-2013 Free Software Foundation, Inc.
 
 This is free software; see the source for copying conditions.  There is NO
 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
@@ -125,13 +116,17 @@ esac
 maybe_os=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\2/'`
 case $maybe_os in
   nto-qnx* | linux-gnu* | linux-android* | linux-dietlibc | linux-newlib* | \
-  linux-uclibc* | uclinux-uclibc* | uclinux-gnu* | kfreebsd*-gnu* | \
+  linux-musl* | linux-uclibc* | uclinux-uclibc* | uclinux-gnu* | kfreebsd*-gnu* | \
   knetbsd*-gnu* | netbsd*-gnu* | \
   kopensolaris*-gnu* | \
   storm-chaos* | os2-emx* | rtmk-nova*)
     os=-$maybe_os
     basic_machine=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\1/'`
     ;;
+  android-linux)
+    os=-linux-android
+    basic_machine=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\1/'`-unknown
+    ;;
   *)
     basic_machine=`echo $1 | sed 's/-[^-]*$//'`
     if [ $basic_machine != $1 ]
@@ -154,7 +149,7 @@ case $os in
 	-convergent* | -ncr* | -news | -32* | -3600* | -3100* | -hitachi* |\
 	-c[123]* | -convex* | -sun | -crds | -omron* | -dg | -ultra | -tti* | \
 	-harris | -dolphin | -highlevel | -gould | -cbm | -ns | -masscomp | \
-	-apple | -axis | -knuth | -cray | -microblaze)
+	-apple | -axis | -knuth | -cray | -microblaze*)
 		os=
 		basic_machine=$1
 		;;
@@ -223,6 +218,12 @@ case $os in
 	-isc*)
 		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
 		;;
+	-lynx*178)
+		os=-lynxos178
+		;;
+	-lynx*5)
+		os=-lynxos5
+		;;
 	-lynx*)
 		os=-lynxos
 		;;
@@ -247,13 +248,16 @@ case $basic_machine in
 	# Some are omitted here because they have special meanings below.
 	1750a | 580 \
 	| a29k \
+	| aarch64 | aarch64_be \
 	| alpha | alphaev[4-8] | alphaev56 | alphaev6[78] | alphapca5[67] \
 	| alpha64 | alpha64ev[4-8] | alpha64ev56 | alpha64ev6[78] | alpha64pca5[67] \
 	| am33_2.0 \
-	| arc | arm | arm[bl]e | arme[lb] | armv[2345] | armv[345][lb] | avr | avr32 \
+	| arc | arceb \
+	| arm | arm[bl]e | arme[lb] | armv[2-8] | armv[3-8][lb] | armv7[arm] \
+	| avr | avr32 \
 	| be32 | be64 \
 	| bfin \
-	| c4x | clipper \
+	| c4x | c8051 | clipper \
 	| d10v | d30v | dlx | dsp16xx \
 	| epiphany \
 	| fido | fr30 | frv \
@@ -261,10 +265,11 @@ case $basic_machine in
 	| hexagon \
 	| i370 | i860 | i960 | ia64 \
 	| ip2k | iq2000 \
+	| k1om \
 	| le32 | le64 \
 	| lm32 \
 	| m32c | m32r | m32rle | m68000 | m68k | m88k \
-	| maxq | mb | microblaze | mcore | mep | metag \
+	| maxq | mb | microblaze | microblazeel | mcore | mep | metag \
 	| mips | mipsbe | mipseb | mipsel | mipsle \
 	| mips16 \
 	| mips64 | mips64el \
@@ -282,16 +287,17 @@ case $basic_machine in
 	| mipsisa64r2 | mipsisa64r2el \
 	| mipsisa64sb1 | mipsisa64sb1el \
 	| mipsisa64sr71k | mipsisa64sr71kel \
+	| mipsr5900 | mipsr5900el \
 	| mipstx39 | mipstx39el \
 	| mn10200 | mn10300 \
 	| moxie \
 	| mt \
 	| msp430 \
 	| nds32 | nds32le | nds32be \
-	| nios | nios2 \
+	| nios | nios2 | nios2eb | nios2el \
 	| ns16k | ns32k \
 	| open8 \
-	| or32 \
+	| or1k | or32 \
 	| pdp10 | pdp11 | pj | pjl \
 	| powerpc | powerpc64 | powerpc64le | powerpcle \
 	| pyramid \
@@ -319,8 +325,7 @@ case $basic_machine in
 	c6x)
 		basic_machine=tic6x-unknown
 		;;
-	m6811 | m68hc11 | m6812 | m68hc12 | picochip)
-		# Motorola 68HC11/12.
+	m6811 | m68hc11 | m6812 | m68hc12 | m68hcs12x | nvptx | picochip)
 		basic_machine=$basic_machine-unknown
 		os=-none
 		;;
@@ -333,7 +338,10 @@ case $basic_machine in
 	strongarm | thumb | xscale)
 		basic_machine=arm-unknown
 		;;
-
+	xgate)
+		basic_machine=$basic_machine-unknown
+		os=-none
+		;;
 	xscaleeb)
 		basic_machine=armeb-unknown
 		;;
@@ -356,15 +364,16 @@ case $basic_machine in
 	# Recognize the basic CPU types with company name.
 	580-* \
 	| a29k-* \
+	| aarch64-* | aarch64_be-* \
 	| alpha-* | alphaev[4-8]-* | alphaev56-* | alphaev6[78]-* \
 	| alpha64-* | alpha64ev[4-8]-* | alpha64ev56-* | alpha64ev6[78]-* \
-	| alphapca5[67]-* | alpha64pca5[67]-* | arc-* \
+	| alphapca5[67]-* | alpha64pca5[67]-* | arc-* | arceb-* \
 	| arm-*  | armbe-* | armle-* | armeb-* | armv*-* \
 	| avr-* | avr32-* \
 	| be32-* | be64-* \
 	| bfin-* | bs2000-* \
 	| c[123]* | c30-* | [cjt]90-* | c4x-* \
-	| clipper-* | craynv-* | cydra-* \
+	| c8051-* | clipper-* | craynv-* | cydra-* \
 	| d10v-* | d30v-* | dlx-* \
 	| elxsi-* \
 	| f30[01]-* | f700-* | fido-* | fr30-* | frv-* | fx80-* \
@@ -373,11 +382,13 @@ case $basic_machine in
 	| hexagon-* \
 	| i*86-* | i860-* | i960-* | ia64-* \
 	| ip2k-* | iq2000-* \
+	| k1om-* \
 	| le32-* | le64-* \
 	| lm32-* \
 	| m32c-* | m32r-* | m32rle-* \
 	| m68000-* | m680[012346]0-* | m68360-* | m683?2-* | m68k-* \
-	| m88110-* | m88k-* | maxq-* | mcore-* | metag-* | microblaze-* \
+	| m88110-* | m88k-* | maxq-* | mcore-* | metag-* \
+	| microblaze-* | microblazeel-* \
 	| mips-* | mipsbe-* | mipseb-* | mipsel-* | mipsle-* \
 	| mips16-* \
 	| mips64-* | mips64el-* \
@@ -395,12 +406,13 @@ case $basic_machine in
 	| mipsisa64r2-* | mipsisa64r2el-* \
 	| mipsisa64sb1-* | mipsisa64sb1el-* \
 	| mipsisa64sr71k-* | mipsisa64sr71kel-* \
+	| mipsr5900-* | mipsr5900el-* \
 	| mipstx39-* | mipstx39el-* \
 	| mmix-* \
 	| mt-* \
 	| msp430-* \
 	| nds32-* | nds32le-* | nds32be-* \
-	| nios-* | nios2-* \
+	| nios-* | nios2-* | nios2eb-* | nios2el-* \
 	| none-* | np1-* | ns16k-* | ns32k-* \
 	| open8-* \
 	| orion-* \
@@ -719,7 +731,6 @@ case $basic_machine in
 	i370-ibm* | ibm*)
 		basic_machine=i370-ibm
 		;;
-# I'm not sure what "Sysv32" means.  Should this be sysv3.2?
 	i*86v32)
 		basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'`
 		os=-sysv32
@@ -777,11 +788,15 @@ case $basic_machine in
 		basic_machine=ns32k-utek
 		os=-sysv
 		;;
-	microblaze)
+	microblaze*)
 		basic_machine=microblaze-xilinx
 		;;
+	mingw64)
+		basic_machine=x86_64-pc
+		os=-mingw64
+		;;
 	mingw32)
-		basic_machine=i386-pc
+		basic_machine=i686-pc
 		os=-mingw32
 		;;
 	mingw32ce)
@@ -817,7 +832,7 @@ case $basic_machine in
 		basic_machine=`echo $basic_machine | sed -e 's/ms1-/mt-/'`
 		;;
 	msys)
-		basic_machine=i386-pc
+		basic_machine=i686-pc
 		os=-msys
 		;;
 	mvs)
@@ -1008,7 +1023,11 @@ case $basic_machine in
 		basic_machine=i586-unknown
 		os=-pw32
 		;;
-	rdos)
+	rdos | rdos64)
+		basic_machine=x86_64-pc
+		os=-rdos
+		;;
+	rdos32)
 		basic_machine=i386-pc
 		os=-rdos
 		;;
@@ -1335,21 +1354,21 @@ case $os in
 	-gnu* | -bsd* | -mach* | -minix* | -genix* | -ultrix* | -irix* \
 	      | -*vms* | -sco* | -esix* | -isc* | -aix* | -cnk* | -sunos | -sunos[34]*\
 	      | -hpux* | -unos* | -osf* | -luna* | -dgux* | -auroraux* | -solaris* \
-	      | -sym* | -kopensolaris* \
+	      | -sym* | -kopensolaris* | -plan9* \
 	      | -amigaos* | -amigados* | -msdos* | -newsos* | -unicos* | -aof* \
 	      | -aos* | -aros* \
 	      | -nindy* | -vxsim* | -vxworks* | -ebmon* | -hms* | -mvs* \
 	      | -clix* | -riscos* | -uniplus* | -iris* | -rtu* | -xenix* \
 	      | -hiux* | -386bsd* | -knetbsd* | -mirbsd* | -netbsd* \
-	      | -openbsd* | -solidbsd* \
+	      | -bitrig* | -openbsd* | -solidbsd* \
 	      | -ekkobsd* | -kfreebsd* | -freebsd* | -riscix* | -lynxos* \
 	      | -bosx* | -nextstep* | -cxux* | -aout* | -elf* | -oabi* \
 	      | -ptx* | -coff* | -ecoff* | -winnt* | -domain* | -vsta* \
 	      | -udi* | -eabi* | -lites* | -ieee* | -go32* | -aux* \
 	      | -chorusos* | -chorusrdb* | -cegcc* \
 	      | -cygwin* | -msys* | -pe* | -psos* | -moss* | -proelf* | -rtems* \
-	      | -mingw32* | -linux-gnu* | -linux-android* \
-	      | -linux-newlib* | -linux-uclibc* \
+	      | -mingw32* | -mingw64* | -linux-gnu* | -linux-android* \
+	      | -linux-newlib* | -linux-musl* | -linux-uclibc* \
 	      | -uxpv* | -beos* | -mpeix* | -udk* \
 	      | -interix* | -uwin* | -mks* | -rhapsody* | -darwin* | -opened* \
 	      | -openstep* | -oskit* | -conix* | -pw32* | -nonstopux* \
@@ -1481,9 +1500,6 @@ case $os in
 	-aros*)
 		os=-aros
 		;;
-	-kaos*)
-		os=-kaos
-		;;
 	-zvmoe)
 		os=-zvmoe
 		;;
@@ -1532,6 +1548,12 @@ case $basic_machine in
 	c4x-* | tic4x-*)
 		os=-coff
 		;;
+	c8051-*)
+		os=-elf
+		;;
+	hexagon-*)
+		os=-elf
+		;;
 	tic54x-*)
 		os=-coff
 		;;
@@ -1559,9 +1581,6 @@ case $basic_machine in
 		;;
 	m68000-sun)
 		os=-sunos3
-		# This also exists in the configure program, but was not the
-		# default.
-		# os=-sunos4
 		;;
 	m68*-cisco)
 		os=-aout
@@ -1575,6 +1594,9 @@ case $basic_machine in
 	mips*-*)
 		os=-elf
 		;;
+	or1k-*)
+		os=-elf
+		;;
 	or32-*)
 		os=-coff
 		;;

configure.ac

@@ -5,7 +5,7 @@
 # Configure script for IJG libjpeg
 #
 
-AC_INIT([libjpeg], [8.4.0])
+AC_INIT([libjpeg], [9.1.0])
 
 # Directory where autotools helper scripts lives.
 AC_CONFIG_AUX_DIR([.])
@@ -21,16 +21,13 @@ AC_CANONICAL_TARGET
 
 # Initialize Automake
 # Don't require all the GNU mandated files
-AM_INIT_AUTOMAKE([-Wall -Werror -Wno-obsolete ansi2knr no-dist foreign])
+AM_INIT_AUTOMAKE([-Wall -Werror no-dist foreign])
 
 # Make --enable-silent-rules the default.
 # To get verbose build output you may configure
 # with --disable-silent-rules or use "make V=1".
 AM_SILENT_RULES([yes])
 
-# This is required when using the de-ANSI-fication feature.
-AM_C_PROTOTYPES
-
 # Add configure option --enable-maintainer-mode which enables
 # dependency checking and generation useful to package maintainers.
 # This is made an option to avoid confusing end users.
@@ -43,6 +40,7 @@ AC_PROG_CPP
 AC_PROG_INSTALL
 AC_PROG_MAKE_SET
 AC_PROG_LN_S
+AM_PROG_AR
 
 # Check if LD supports linker scripts,
 # and define automake conditional HAVE_LD_VERSION_SCRIPT if so.
@@ -225,6 +223,10 @@ int possibly_dupli_function () { return 1; }
 # Run-time checks
 AC_MSG_CHECKING([to see if char is signed])
 AC_TRY_RUN([
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+#include <stdio.h>
 #ifdef HAVE_PROTOTYPES
 int is_char_signed (int arg)
 #else
@@ -254,6 +256,10 @@ int main() {
 
 AC_MSG_CHECKING([to see if right shift is signed])
 AC_TRY_RUN([
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+#include <stdio.h>
 #ifdef HAVE_PROTOTYPES
 int is_shifting_signed (long arg)
 #else
@@ -288,6 +294,9 @@ int main() {
 
 AC_MSG_CHECKING([to see if fopen accepts b spec])
 AC_TRY_RUN([
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
 #include <stdio.h>
 int main() {
   if (fopen("conftestdata", "wb") != NULL)

depcomp

@@ -1,10 +1,9 @@
 #! /bin/sh
 # depcomp - compile a program generating dependencies as side-effects
 
-scriptversion=2011-12-04.11; # UTC
+scriptversion=2013-05-30.07; # UTC
 
-# Copyright (C) 1999, 2000, 2003, 2004, 2005, 2006, 2007, 2009, 2010,
-# 2011 Free Software Foundation, Inc.
+# Copyright (C) 1999-2013 Free Software Foundation, Inc.
 
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -28,7 +27,7 @@ scriptversion=2011-12-04.11; # UTC
 
 case $1 in
   '')
-     echo "$0: No command.  Try \`$0 --help' for more information." 1>&2
+    echo "$0: No command.  Try '$0 --help' for more information." 1>&2
     exit 1;
     ;;
   -h | --h*)
@@ -40,8 +39,8 @@ as side-effects.
 
 Environment variables:
   depmode     Dependency tracking mode.
-  source      Source file read by `PROGRAMS ARGS'.
-  object      Object file output by `PROGRAMS ARGS'.
+  source      Source file read by 'PROGRAMS ARGS'.
+  object      Object file output by 'PROGRAMS ARGS'.
   DEPDIR      directory where to store dependencies.
   depfile     Dependency file to output.
   tmpdepfile  Temporary file to use when outputting dependencies.
@@ -57,6 +56,66 @@ EOF
     ;;
 esac
 
+# Get the directory component of the given path, and save it in the
+# global variables '$dir'.  Note that this directory component will
+# be either empty or ending with a '/' character.  This is deliberate.
+set_dir_from ()
+{
+  case $1 in
+    */*) dir=`echo "$1" | sed -e 's|/[^/]*$|/|'`;;
+      *) dir=;;
+  esac
+}
+
+# Get the suffix-stripped basename of the given path, and save it the
+# global variable '$base'.
+set_base_from ()
+{
+  base=`echo "$1" | sed -e 's|^.*/||' -e 's/\.[^.]*$//'`
+}
+
+# If no dependency file was actually created by the compiler invocation,
+# we still have to create a dummy depfile, to avoid errors with the
+# Makefile "include basename.Plo" scheme.
+make_dummy_depfile ()
+{
+  echo "#dummy" > "$depfile"
+}
+
+# Factor out some common post-processing of the generated depfile.
+# Requires the auxiliary global variable '$tmpdepfile' to be set.
+aix_post_process_depfile ()
+{
+  # If the compiler actually managed to produce a dependency file,
+  # post-process it.
+  if test -f "$tmpdepfile"; then
+    # Each line is of the form 'foo.o: dependency.h'.
+    # Do two passes, one to just change these to
+    #   $object: dependency.h
+    # and one to simply output
+    #   dependency.h:
+    # which is needed to avoid the deleted-header problem.
+    { sed -e "s,^.*\.[$lower]*:,$object:," < "$tmpdepfile"
+      sed -e "s,^.*\.[$lower]*:[$tab ]*,," -e 's,$,:,' < "$tmpdepfile"
+    } > "$depfile"
+    rm -f "$tmpdepfile"
+  else
+    make_dummy_depfile
+  fi
+}
+
+# A tabulation character.
+tab='	'
+# A newline character.
+nl='
+'
+# Character ranges might be problematic outside the C locale.
+# These definitions help.
+upper=ABCDEFGHIJKLMNOPQRSTUVWXYZ
+lower=abcdefghijklmnopqrstuvwxyz
+digits=0123456789
+alpha=${upper}${lower}
+
 if test -z "$depmode" || test -z "$source" || test -z "$object"; then
   echo "depcomp: Variables source, object and depmode must be set" 1>&2
   exit 1
@@ -69,6 +128,9 @@ tmpdepfile=${tmpdepfile-`echo "$depfile" | sed 's/\.\([^.]*\)$/.T\1/'`}
 
 rm -f "$tmpdepfile"
 
+# Avoid interferences from the environment.
+gccflag= dashmflag=
+
 # Some modes work just like other modes, but use different flags.  We
 # parameterize here, but still list the modes in the big case below,
 # to make depend.m4 easier to write.  Note that we *cannot* use a case
@@ -102,6 +164,12 @@ if test "$depmode" = msvc7msys; then
   depmode=msvc7
 fi
 
+if test "$depmode" = xlc; then
+  # IBM C/C++ Compilers xlc/xlC can output gcc-like dependency information.
+  gccflag=-qmakedep=gcc,-MF
+  depmode=gcc
+fi
+
 case "$depmode" in
 gcc3)
 ## gcc 3 implements dependency tracking that does exactly what
@@ -122,8 +190,7 @@ gcc3)
   done
   "$@"
   stat=$?
-  if test $stat -eq 0; then :
-  else
+  if test $stat -ne 0; then
     rm -f "$tmpdepfile"
     exit $stat
   fi
@@ -131,13 +198,17 @@ gcc3)
   ;;
 
 gcc)
+## Note that this doesn't just cater to obsosete pre-3.x GCC compilers.
+## but also to in-use compilers like IMB xlc/xlC and the HP C compiler.
+## (see the conditional assignment to $gccflag above).
 ## There are various ways to get dependency output from gcc.  Here's
 ## why we pick this rather obscure method:
 ## - Don't want to use -MD because we'd like the dependencies to end
 ##   up in a subdir.  Having to rename by hand is ugly.
 ##   (We might end up doing this anyway to support other compilers.)
 ## - The DEPENDENCIES_OUTPUT environment variable makes gcc act like
-##   -MM, not -M (despite what the docs say).
+##   -MM, not -M (despite what the docs say).  Also, it might not be
+##   supported by the other compilers which use the 'gcc' depmode.
 ## - Using -M directly means running the compiler twice (even worse
 ##   than renaming).
   if test -z "$gccflag"; then
@@ -145,32 +216,30 @@ gcc)
   fi
   "$@" -Wp,"$gccflag$tmpdepfile"
   stat=$?
-  if test $stat -eq 0; then :
-  else
+  if test $stat -ne 0; then
     rm -f "$tmpdepfile"
     exit $stat
   fi
   rm -f "$depfile"
   echo "$object : \\" > "$depfile"
-  alpha=ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz
-## The second -e expression handles DOS-style file names with drive letters.
+  # The second -e expression handles DOS-style file names with drive
+  # letters.
   sed -e 's/^[^:]*: / /' \
       -e 's/^['$alpha']:\/[^:]*: / /' < "$tmpdepfile" >> "$depfile"
-## This next piece of magic avoids the `deleted header file' problem.
+## This next piece of magic avoids the "deleted header file" problem.
 ## The problem is that when a header file which appears in a .P file
 ## is deleted, the dependency causes make to die (because there is
 ## typically no way to rebuild the header).  We avoid this by adding
 ## dummy dependencies for each header file.  Too bad gcc doesn't do
 ## this for us directly.
-  tr ' ' '
-' < "$tmpdepfile" |
-## Some versions of gcc put a space before the `:'.  On the theory
+## Some versions of gcc put a space before the ':'.  On the theory
 ## that the space means something, we add a space to the output as
 ## well.  hp depmode also adds that space, but also prefixes the VPATH
 ## to the object.  Take care to not repeat it in the output.
 ## Some versions of the HPUX 10.20 sed can't process this invocation
 ## correctly.  Breaking it into two sed invocations is a workaround.
-    sed -e 's/^\\$//' -e '/^$/d' -e "s|.*$object$||" -e '/:$/d' \
+  tr ' ' "$nl" < "$tmpdepfile" \
+    | sed -e 's/^\\$//' -e '/^$/d' -e "s|.*$object$||" -e '/:$/d' \
     | sed -e 's/$/ :/' >> "$depfile"
   rm -f "$tmpdepfile"
   ;;
@@ -189,8 +258,7 @@ sgi)
     "$@" -MDupdate "$tmpdepfile"
   fi
   stat=$?
-  if test $stat -eq 0; then :
-  else
+  if test $stat -ne 0; then
     rm -f "$tmpdepfile"
     exit $stat
   fi
@@ -198,43 +266,41 @@ sgi)
 
   if test -f "$tmpdepfile"; then  # yes, the sourcefile depend on other files
     echo "$object : \\" > "$depfile"
-
     # Clip off the initial element (the dependent).  Don't try to be
     # clever and replace this with sed code, as IRIX sed won't handle
     # lines with more than a fixed number of characters (4096 in
     # IRIX 6.2 sed, 8192 in IRIX 6.5).  We also remove comment lines;
-    # the IRIX cc adds comments like `#:fec' to the end of the
+    # the IRIX cc adds comments like '#:fec' to the end of the
     # dependency line.
-    tr ' ' '
-' < "$tmpdepfile" \
-    | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' | \
-    tr '
-' ' ' >> "$depfile"
+    tr ' ' "$nl" < "$tmpdepfile" \
+      | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' \
+      | tr "$nl" ' ' >> "$depfile"
     echo >> "$depfile"
-
     # The second pass generates a dummy entry for each header file.
-    tr ' ' '
-' < "$tmpdepfile" \
+    tr ' ' "$nl" < "$tmpdepfile" \
       | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' -e 's/$/:/' \
       >> "$depfile"
   else
-    # The sourcefile does not contain any dependencies, so just
-    # store a dummy comment line, to avoid errors with the Makefile
-    # "include basename.Plo" scheme.
-    echo "#dummy" > "$depfile"
+    make_dummy_depfile
   fi
   rm -f "$tmpdepfile"
   ;;
 
+xlc)
+  # This case exists only to let depend.m4 do its work.  It works by
+  # looking at the text of this script.  This case will never be run,
+  # since it is checked for above.
+  exit 1
+  ;;
+
 aix)
   # The C for AIX Compiler uses -M and outputs the dependencies
   # in a .u file.  In older versions, this file always lives in the
-  # current directory.  Also, the AIX compiler puts `$object:' at the
+  # current directory.  Also, the AIX compiler puts '$object:' at the
   # start of each line; $object doesn't have directory information.
   # Version 6 uses the directory in both cases.
-  dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
-  test "x$dir" = "x$object" && dir=
-  base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
+  set_dir_from "$object"
+  set_base_from "$object"
   if test "$libtool" = yes; then
     tmpdepfile1=$dir$base.u
     tmpdepfile2=$base.u
@@ -247,9 +313,7 @@ aix)
     "$@" -M
   fi
   stat=$?
-
-  if test $stat -eq 0; then :
-  else
+  if test $stat -ne 0; then
     rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
     exit $stat
   fi
@@ -258,44 +322,100 @@ aix)
   do
     test -f "$tmpdepfile" && break
   done
-  if test -f "$tmpdepfile"; then
-    # Each line is of the form `foo.o: dependent.h'.
-    # Do two passes, one to just change these to
-    # `$object: dependent.h' and one to simply `dependent.h:'.
-    sed -e "s,^.*\.[a-z]*:,$object:," < "$tmpdepfile" > "$depfile"
-    # That's a tab and a space in the [].
-    sed -e 's,^.*\.[a-z]*:[	 ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile"
-  else
-    # The sourcefile does not contain any dependencies, so just
-    # store a dummy comment line, to avoid errors with the Makefile
-    # "include basename.Plo" scheme.
-    echo "#dummy" > "$depfile"
+  aix_post_process_depfile
+  ;;
+
+tcc)
+  # tcc (Tiny C Compiler) understand '-MD -MF file' since version 0.9.26
+  # FIXME: That version still under development at the moment of writing.
+  #        Make that this statement remains true also for stable, released
+  #        versions.
+  # It will wrap lines (doesn't matter whether long or short) with a
+  # trailing '\', as in:
+  #
+  #   foo.o : \
+  #    foo.c \
+  #    foo.h \
+  #
+  # It will put a trailing '\' even on the last line, and will use leading
+  # spaces rather than leading tabs (at least since its commit 0394caf7
+  # "Emit spaces for -MD").
+  "$@" -MD -MF "$tmpdepfile"
+  stat=$?
+  if test $stat -ne 0; then
+    rm -f "$tmpdepfile"
+    exit $stat
   fi
+  rm -f "$depfile"
+  # Each non-empty line is of the form 'foo.o : \' or ' dep.h \'.
+  # We have to change lines of the first kind to '$object: \'.
+  sed -e "s|.*:|$object :|" < "$tmpdepfile" > "$depfile"
+  # And for each line of the second kind, we have to emit a 'dep.h:'
+  # dummy dependency, to avoid the deleted-header problem.
+  sed -n -e 's|^  *\(.*\) *\\$|\1:|p' < "$tmpdepfile" >> "$depfile"
   rm -f "$tmpdepfile"
   ;;
 
-icc)
-  # Intel's C compiler understands `-MD -MF file'.  However on
-  #    icc -MD -MF foo.d -c -o sub/foo.o sub/foo.c
-  # ICC 7.0 will fill foo.d with something like
-  #    foo.o: sub/foo.c
-  #    foo.o: sub/foo.h
-  # which is wrong.  We want:
-  #    sub/foo.o: sub/foo.c
-  #    sub/foo.o: sub/foo.h
-  #    sub/foo.c:
-  #    sub/foo.h:
-  # ICC 7.1 will output
+## The order of this option in the case statement is important, since the
+## shell code in configure will try each of these formats in the order
+## listed in this file.  A plain '-MD' option would be understood by many
+## compilers, so we must ensure this comes after the gcc and icc options.
+pgcc)
+  # Portland's C compiler understands '-MD'.
+  # Will always output deps to 'file.d' where file is the root name of the
+  # source file under compilation, even if file resides in a subdirectory.
+  # The object file name does not affect the name of the '.d' file.
+  # pgcc 10.2 will output
   #    foo.o: sub/foo.c sub/foo.h
-  # and will wrap long lines using \ :
+  # and will wrap long lines using '\' :
   #    foo.o: sub/foo.c ... \
   #     sub/foo.h ... \
   #     ...
+  set_dir_from "$object"
+  # Use the source, not the object, to determine the base name, since
+  # that's sadly what pgcc will do too.
+  set_base_from "$source"
+  tmpdepfile=$base.d
 
-  "$@" -MD -MF "$tmpdepfile"
+  # For projects that build the same source file twice into different object
+  # files, the pgcc approach of using the *source* file root name can cause
+  # problems in parallel builds.  Use a locking strategy to avoid stomping on
+  # the same $tmpdepfile.
+  lockdir=$base.d-lock
+  trap "
+    echo '$0: caught signal, cleaning up...' >&2
+    rmdir '$lockdir'
+    exit 1
+  " 1 2 13 15
+  numtries=100
+  i=$numtries
+  while test $i -gt 0; do
+    # mkdir is a portable test-and-set.
+    if mkdir "$lockdir" 2>/dev/null; then
+      # This process acquired the lock.
+      "$@" -MD
       stat=$?
-  if test $stat -eq 0; then :
+      # Release the lock.
+      rmdir "$lockdir"
+      break
     else
+      # If the lock is being held by a different process, wait
+      # until the winning process is done or we timeout.
+      while test -d "$lockdir" && test $i -gt 0; do
+        sleep 1
+        i=`expr $i - 1`
+      done
+    fi
+    i=`expr $i - 1`
+  done
+  trap - 1 2 13 15
+  if test $i -le 0; then
+    echo "$0: failed to acquire lock after $numtries attempts" >&2
+    echo "$0: check lockdir '$lockdir'" >&2
+    exit 1
+  fi
+
+  if test $stat -ne 0; then
     rm -f "$tmpdepfile"
     exit $stat
   fi
@@ -307,8 +427,8 @@ icc)
   sed "s,^[^:]*:,$object :," < "$tmpdepfile" > "$depfile"
   # Some versions of the HPUX 10.20 sed can't process this invocation
   # correctly.  Breaking it into two sed invocations is a workaround.
-  sed 's,^[^:]*: \(.*\)$,\1,;s/^\\$//;/^$/d;/:$/d' < "$tmpdepfile" |
-    sed -e 's/$/ :/' >> "$depfile"
+  sed 's,^[^:]*: \(.*\)$,\1,;s/^\\$//;/^$/d;/:$/d' < "$tmpdepfile" \
+    | sed -e 's/$/ :/' >> "$depfile"
   rm -f "$tmpdepfile"
   ;;
 
@@ -319,9 +439,8 @@ hp2)
   # 'foo.d', which lands next to the object file, wherever that
   # happens to be.
   # Much of this is similar to the tru64 case; see comments there.
-  dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
-  test "x$dir" = "x$object" && dir=
-  base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
+  set_dir_from  "$object"
+  set_base_from "$object"
   if test "$libtool" = yes; then
     tmpdepfile1=$dir$base.d
     tmpdepfile2=$dir.libs/$base.d
@@ -332,8 +451,7 @@ hp2)
     "$@" +Maked
   fi
   stat=$?
-  if test $stat -eq 0; then :
-  else
+  if test $stat -ne 0; then
      rm -f "$tmpdepfile1" "$tmpdepfile2"
      exit $stat
   fi
@@ -343,8 +461,8 @@ hp2)
     test -f "$tmpdepfile" && break
   done
   if test -f "$tmpdepfile"; then
-    sed -e "s,^.*\.[a-z]*:,$object:," "$tmpdepfile" > "$depfile"
-    # Add `dependent.h:' lines.
+    sed -e "s,^.*\.[$lower]*:,$object:," "$tmpdepfile" > "$depfile"
+    # Add 'dependent.h:' lines.
     sed -ne '2,${
                s/^ *//
                s/ \\*$//
@@ -352,67 +470,51 @@ hp2)
                p
              }' "$tmpdepfile" >> "$depfile"
   else
-    echo "#dummy" > "$depfile"
+    make_dummy_depfile
   fi
   rm -f "$tmpdepfile" "$tmpdepfile2"
   ;;
 
 tru64)
   # The Tru64 compiler uses -MD to generate dependencies as a side
-   # effect.  `cc -MD -o foo.o ...' puts the dependencies into `foo.o.d'.
+  # effect.  'cc -MD -o foo.o ...' puts the dependencies into 'foo.o.d'.
   # At least on Alpha/Redhat 6.1, Compaq CCC V6.2-504 seems to put
-   # dependencies in `foo.d' instead, so we check for that too.
+  # dependencies in 'foo.d' instead, so we check for that too.
   # Subdirectories are respected.
-   dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
-   test "x$dir" = "x$object" && dir=
-   base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
+  set_dir_from  "$object"
+  set_base_from "$object"
 
   if test "$libtool" = yes; then
-      # With Tru64 cc, shared objects can also be used to make a
-      # static library.  This mechanism is used in libtool 1.4 series to
-      # handle both shared and static libraries in a single compilation.
-      # With libtool 1.4, dependencies were output in $dir.libs/$base.lo.d.
-      #
-      # With libtool 1.5 this exception was removed, and libtool now
-      # generates 2 separate objects for the 2 libraries.  These two
-      # compilations output dependencies in $dir.libs/$base.o.d and
+    # Libtool generates 2 separate objects for the 2 libraries.  These
+    # two compilations output dependencies in $dir.libs/$base.o.d and
     # in $dir$base.o.d.  We have to check for both files, because
     # one of the two compilations can be disabled.  We should prefer
     # $dir$base.o.d over $dir.libs/$base.o.d because the latter is
     # automatically cleaned when .libs/ is deleted, while ignoring
     # the former would cause a distcleancheck panic.
-      tmpdepfile1=$dir.libs/$base.lo.d   # libtool 1.4
-      tmpdepfile2=$dir$base.o.d          # libtool 1.5
-      tmpdepfile3=$dir.libs/$base.o.d    # libtool 1.5
-      tmpdepfile4=$dir.libs/$base.d      # Compaq CCC V6.2-504
+    tmpdepfile1=$dir$base.o.d          # libtool 1.5
+    tmpdepfile2=$dir.libs/$base.o.d    # Likewise.
+    tmpdepfile3=$dir.libs/$base.d      # Compaq CCC V6.2-504
     "$@" -Wc,-MD
   else
-      tmpdepfile1=$dir$base.o.d
+    tmpdepfile1=$dir$base.d
     tmpdepfile2=$dir$base.d
     tmpdepfile3=$dir$base.d
-      tmpdepfile4=$dir$base.d
     "$@" -MD
   fi
 
   stat=$?
-   if test $stat -eq 0; then :
-   else
-      rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" "$tmpdepfile4"
+  if test $stat -ne 0; then
+    rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
     exit $stat
   fi
 
-   for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" "$tmpdepfile4"
+  for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
   do
     test -f "$tmpdepfile" && break
   done
-   if test -f "$tmpdepfile"; then
-      sed -e "s,^.*\.[a-z]*:,$object:," < "$tmpdepfile" > "$depfile"
-      # That's a tab and a space in the [].
-      sed -e 's,^.*\.[a-z]*:[	 ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile"
-   else
-      echo "#dummy" > "$depfile"
-   fi
-   rm -f "$tmpdepfile"
+  # Same post-processing that is required for AIX mode.
+  aix_post_process_depfile
   ;;
 
 msvc7)
@@ -424,8 +526,7 @@ msvc7)
   "$@" $showIncludes > "$tmpdepfile"
   stat=$?
   grep -v '^Note: including file: ' "$tmpdepfile"
-  if test "$stat" = 0; then :
-  else
+  if test $stat -ne 0; then
     rm -f "$tmpdepfile"
     exit $stat
   fi
@@ -443,14 +544,15 @@ msvc7)
   p
 }' | $cygpath_u | sort -u | sed -n '
 s/ /\\ /g
-s/\(.*\)/	\1 \\/p
+s/\(.*\)/'"$tab"'\1 \\/p
 s/.\(.*\) \\/\1:/
 H
 $ {
-  s/.*/	/
+  s/.*/'"$tab"'/
   G
   p
 }' >> "$depfile"
+  echo >> "$depfile" # make sure the fragment doesn't end with a backslash
   rm -f "$tmpdepfile"
   ;;
 
@@ -478,7 +580,7 @@ dashmstdout)
     shift
   fi
 
-  # Remove `-o $object'.
+  # Remove '-o $object'.
   IFS=" "
   for arg
   do
@@ -498,18 +600,18 @@ dashmstdout)
   done
 
   test -z "$dashmflag" && dashmflag=-M
-  # Require at least two characters before searching for `:'
+  # Require at least two characters before searching for ':'
   # in the target name.  This is to cope with DOS-style filenames:
-  # a dependency such as `c:/foo/bar' could be seen as target `c' otherwise.
+  # a dependency such as 'c:/foo/bar' could be seen as target 'c' otherwise.
   "$@" $dashmflag |
-    sed 's:^[  ]*[^: ][^:][^:]*\:[    ]*:'"$object"'\: :' > "$tmpdepfile"
+    sed "s|^[$tab ]*[^:$tab ][^:][^:]*:[$tab ]*|$object: |" > "$tmpdepfile"
   rm -f "$depfile"
   cat < "$tmpdepfile" > "$depfile"
-  tr ' ' '
-' < "$tmpdepfile" | \
-## Some versions of the HPUX 10.20 sed can't process this invocation
-## correctly.  Breaking it into two sed invocations is a workaround.
-    sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
+  # Some versions of the HPUX 10.20 sed can't process this sed invocation
+  # correctly.  Breaking it into two sed invocations is a workaround.
+  tr ' ' "$nl" < "$tmpdepfile" \
+    | sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' \
+    | sed -e 's/$/ :/' >> "$depfile"
   rm -f "$tmpdepfile"
   ;;
 
@@ -562,11 +664,12 @@ makedepend)
   # makedepend may prepend the VPATH from the source file name to the object.
   # No need to regex-escape $object, excess matching of '.' is harmless.
   sed "s|^.*\($object *:\)|\1|" "$tmpdepfile" > "$depfile"
-  sed '1,2d' "$tmpdepfile" | tr ' ' '
-' | \
-## Some versions of the HPUX 10.20 sed can't process this invocation
-## correctly.  Breaking it into two sed invocations is a workaround.
-    sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
+  # Some versions of the HPUX 10.20 sed can't process the last invocation
+  # correctly.  Breaking it into two sed invocations is a workaround.
+  sed '1,2d' "$tmpdepfile" \
+    | tr ' ' "$nl" \
+    | sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' \
+    | sed -e 's/$/ :/' >> "$depfile"
   rm -f "$tmpdepfile" "$tmpdepfile".bak
   ;;
 
@@ -583,7 +686,7 @@ cpp)
     shift
   fi
 
-  # Remove `-o $object'.
+  # Remove '-o $object'.
   IFS=" "
   for arg
   do
@@ -602,10 +705,10 @@ cpp)
     esac
   done
 
-  "$@" -E |
-    sed -n -e '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
-       -e '/^#line [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' |
-    sed '$ s: \\$::' > "$tmpdepfile"
+  "$@" -E \
+    | sed -n -e '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
+             -e '/^#line [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
+    | sed '$ s: \\$::' > "$tmpdepfile"
   rm -f "$depfile"
   echo "$object : \\" > "$depfile"
   cat < "$tmpdepfile" >> "$depfile"
@@ -652,8 +755,8 @@ msvisualcpp)
   sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::\1:p' | $cygpath_u | sort -u > "$tmpdepfile"
   rm -f "$depfile"
   echo "$object : \\" > "$depfile"
-  sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::	\1 \\:p' >> "$depfile"
-  echo "	" >> "$depfile"
+  sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::'"$tab"'\1 \\:p' >> "$depfile"
+  echo "$tab" >> "$depfile"
   sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::\1\::p' >> "$depfile"
   rm -f "$tmpdepfile"
   ;;

djpeg.1

@@ -1,4 +1,4 @@
-.TH DJPEG 1 "3 October 2009"
+.TH DJPEG 1 "23 November 2013"
 .SH NAME
 djpeg \- decompress a JPEG file to an image file
 .SH SYNOPSIS
@@ -246,7 +246,7 @@ Communications of the ACM, April 1991 (vol. 34, no. 4), pp. 30-44.
 .SH AUTHOR
 Independent JPEG Group
 .SH BUGS
-To avoid the Unisys LZW patent,
+To avoid the Unisys LZW patent (now expired),
 .B djpeg
 produces uncompressed GIF files.  These are larger than they should be, but
 are readable by standard GIF decoders.

djpeg.c

@@ -2,7 +2,7 @@
  * djpeg.c
  *
  * Copyright (C) 1991-1997, Thomas G. Lane.
- * Modified 2009 by Guido Vollbeding.
+ * Modified 2009-2013 by Guido Vollbeding.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
@@ -298,7 +298,7 @@ parse_switches (j_decompress_ptr cinfo, int argc, char **argv,
       cinfo->mem->max_memory_to_use = lval * 1000L;
 
     } else if (keymatch(arg, "nosmooth", 3)) {
-      /* Suppress fancy upsampling */
+      /* Suppress fancy upsampling. */
       cinfo->do_fancy_upsampling = FALSE;
 
     } else if (keymatch(arg, "onepass", 3)) {
@@ -327,7 +327,7 @@ parse_switches (j_decompress_ptr cinfo, int argc, char **argv,
       /* Scale the output image by a fraction M/N. */
       if (++argn >= argc)	/* advance to next argument */
 	usage();
-      if (sscanf(argv[argn], "%d/%d",
+      if (sscanf(argv[argn], "%u/%u",
 		 &cinfo->scale_num, &cinfo->scale_denom) < 1)
 	usage();
 

filelist.txt

@@ -1,6 +1,6 @@
 IJG JPEG LIBRARY:  FILE LIST
 
-Copyright (C) 1994-2009, Thomas G. Lane, Guido Vollbeding.
+Copyright (C) 1994-2013, Thomas G. Lane, Guido Vollbeding.
 This file is part of the Independent JPEG Group's software.
 For conditions of distribution and use, see the accompanying README file.
 
@@ -197,6 +197,8 @@ config.guess
 config.sub
 depcomp
 missing
+ar-lib
+compile
 install-sh	Install shell script for those Unix systems lacking one.
 Makefile.in	Makefile input for configure.
 Makefile.am	Source file for use with Automake to generate Makefile.in.
@@ -206,8 +208,6 @@ mak*.*		Sample makefiles for particular systems.
 jconfig.*	Sample jconfig.h for particular systems.
 libjpeg.map	Script to generate shared library with versioned symbols.
 aclocal.m4	M4 macro definitions for use with Autoconf.
-ansi2knr.c	De-ANSIfier for pre-ANSI C compilers (courtesy of
-		L. Peter Deutsch and Aladdin Enterprises).
 
 Test files (see install.txt for test procedure):
 

install-sh

@@ -1,7 +1,7 @@
 #!/bin/sh
 # install - install a program, script, or datafile
 
-scriptversion=2011-01-19.21; # UTC
+scriptversion=2011-11-20.07; # UTC
 
 # This originates from X11R5 (mit/util/scripts/install.sh), which was
 # later released in X11R6 (xc/config/util/install.sh) with the
@@ -35,7 +35,7 @@ scriptversion=2011-01-19.21; # UTC
 # FSF changes to this file are in the public domain.
 #
 # Calling this script install-sh is preferred over install.sh, to prevent
-# `make' implicit rules from creating a file called install from it
+# 'make' implicit rules from creating a file called install from it
 # when there is no Makefile.
 #
 # This script is compatible with the BSD install script, but was written
@@ -156,7 +156,7 @@ while test $# -ne 0; do
     -s) stripcmd=$stripprog;;
 
     -t) dst_arg=$2
-	# Protect names problematic for `test' and other utilities.
+	# Protect names problematic for 'test' and other utilities.
 	case $dst_arg in
 	  -* | [=\(\)!]) dst_arg=./$dst_arg;;
 	esac
@@ -190,7 +190,7 @@ if test $# -ne 0 && test -z "$dir_arg$dst_arg"; then
     fi
     shift # arg
     dst_arg=$arg
-    # Protect names problematic for `test' and other utilities.
+    # Protect names problematic for 'test' and other utilities.
     case $dst_arg in
       -* | [=\(\)!]) dst_arg=./$dst_arg;;
     esac
@@ -202,7 +202,7 @@ if test $# -eq 0; then
     echo "$0: no input file specified." >&2
     exit 1
   fi
-  # It's OK to call `install-sh -d' without argument.
+  # It's OK to call 'install-sh -d' without argument.
   # This can happen when creating conditional directories.
   exit 0
 fi
@@ -240,7 +240,7 @@ fi
 
 for src
 do
-  # Protect names problematic for `test' and other utilities.
+  # Protect names problematic for 'test' and other utilities.
   case $src in
     -* | [=\(\)!]) src=./$src;;
   esac
@@ -354,7 +354,7 @@ do
 	      if test -z "$dir_arg" || {
 		   # Check for POSIX incompatibilities with -m.
 		   # HP-UX 11.23 and IRIX 6.5 mkdir -m -p sets group- or
-		   # other-writeable bit of parent directory when it shouldn't.
+		   # other-writable bit of parent directory when it shouldn't.
 		   # FreeBSD 6.1 mkdir -m -p sets mode of existing directory.
 		   ls_ld_tmpdir=`ls -ld "$tmpdir"`
 		   case $ls_ld_tmpdir in

install.txt

@@ -1,6 +1,6 @@
 INSTALLATION INSTRUCTIONS for the Independent JPEG Group's JPEG software
 
-Copyright (C) 1991-2011, Thomas G. Lane, Guido Vollbeding.
+Copyright (C) 1991-2013, Thomas G. Lane, Guido Vollbeding.
 This file is part of the Independent JPEG Group's software.
 For conditions of distribution and use, see the accompanying README file.
 
@@ -418,54 +418,58 @@ support as follows:
 	    the directory containing the URT "librle.a" file (typically the
 	    "lib" subdirectory of the URT distribution).
 
-Support for 12-bit-deep pixel data:
+Support for 9-bit to 12-bit deep pixel data:
 
-The JPEG standard allows either 8-bit or 12-bit data precision.  (For color,
-this means 8 or 12 bits per channel, of course.)  If you need to work with
-deeper than 8-bit data, you can compile the IJG code for 12-bit operation.
+The IJG code currently allows 8, 9, 10, 11, or 12 bits sample data precision.
+(For color, this means 8 to 12 bits per channel, of course.)  If you need to
+work with deeper than 8-bit data, you can compile the IJG code for 9-bit to
+12-bit operation.
 To do so:
-  1. In jmorecfg.h, define BITS_IN_JSAMPLE as 12 rather than 8.
+  1. In jmorecfg.h, define BITS_IN_JSAMPLE as 9, 10, 11, or 12 rather than 8.
   2. In jconfig.h, undefine BMP_SUPPORTED, RLE_SUPPORTED, and TARGA_SUPPORTED,
-     because the code for those formats doesn't handle 12-bit data and won't
-     even compile.  (The PPM code does work, as explained below.  The GIF
-     code works too; it scales 8-bit GIF data to and from 12-bit depth
-     automatically.)
+     because the code for those formats doesn't handle deeper than 8-bit data
+     and won't even compile.  (The PPM code does work, as explained below.
+     The GIF code works too; it scales 8-bit GIF data to and from 12-bit
+     depth automatically.)
   3. Compile.  Don't expect "make test" to pass, since the supplied test
      files are for 8-bit data.
 
-Currently, 12-bit support does not work on 16-bit-int machines.
+Currently, 9-bit to 12-bit support does not work on 16-bit-int machines.
 
-Note that a 12-bit version will not read 8-bit JPEG files, nor vice versa;
-so you'll want to keep around a regular 8-bit compilation as well.
-(Run-time selection of data depth, to allow a single copy that does both,
-is possible but would probably slow things down considerably; it's very low
-on our to-do list.)
+Run-time selection and conversion of data precision are currently not
+supported and may be added later.
+Exception:  The transcoding part (jpegtran) supports all settings in a
+single instance, since it operates on the level of DCT coefficients and
+not sample values.
 
-The PPM reader (rdppm.c) can read 12-bit data from either text-format or
-binary-format PPM and PGM files.  Binary-format PPM/PGM files which have a
-maxval greater than 255 are assumed to use 2 bytes per sample, MSB first
-(big-endian order).  As of early 1995, 2-byte binary format is not
+The PPM reader (rdppm.c) can read deeper than 8-bit data from either
+text-format or binary-format PPM and PGM files.  Binary-format PPM/PGM files
+which have a maxval greater than 255 are assumed to use 2 bytes per sample,
+MSB first (big-endian order).  As of early 1995, 2-byte binary format is not
 officially supported by the PBMPLUS library, but it is expected that a
 future release of PBMPLUS will support it.  Note that the PPM reader will
 read files of any maxval regardless of the BITS_IN_JSAMPLE setting; incoming
-data is automatically rescaled to either maxval=255 or maxval=4095 as
-appropriate for the cjpeg bit depth.
+data is automatically rescaled to maxval=MAXJSAMPLE as appropriate for the
+cjpeg bit depth.
 
 The PPM writer (wrppm.c) will normally write 2-byte binary PPM or PGM
-format, maxval 4095, when compiled with BITS_IN_JSAMPLE=12.  Since this
+format, maxval=MAXJSAMPLE, when compiled with BITS_IN_JSAMPLE>8.  Since this
 format is not yet widely supported, you can disable it by compiling wrppm.c
 with PPM_NORAWWORD defined; then the data is scaled down to 8 bits to make a
 standard 1-byte/sample PPM or PGM file.  (Yes, this means still another copy
 of djpeg to keep around.  But hopefully you won't need it for very long.
 Poskanzer's supposed to get that new PBMPLUS release out Real Soon Now.)
 
-Of course, if you are working with 12-bit data, you probably have it stored
-in some other, nonstandard format.  In that case you'll probably want to
-write your own I/O modules to read and write your format.
+Of course, if you are working with 9-bit to 12-bit data, you probably have
+it stored in some other, nonstandard format.  In that case you'll probably
+want to write your own I/O modules to read and write your format.
 
-Note that a 12-bit version of cjpeg always runs in "-optimize" mode, in
-order to generate valid Huffman tables.  This is necessary because our
-default Huffman tables only cover 8-bit data.
+Note:
+The standard Huffman tables are only valid for 8-bit data precision.  If
+you selected more than 8-bit data precision, cjpeg uses arithmetic coding
+by default.  The Huffman encoder normally uses entropy optimization to
+compute usable tables for higher precision.  Otherwise, you'll have to
+supply different default Huffman tables.
 
 Removing code:
 
@@ -848,17 +852,23 @@ with /Oo-.
 Microsoft Windows (all versions), generic comments:
 
 Some Windows system include files define typedef boolean as "unsigned char".
-The IJG code also defines typedef boolean, but we make it "int" by default.
+The IJG code also defines typedef boolean, but we make it an "enum" by default.
 This doesn't affect the IJG programs because we don't import those Windows
 include files.  But if you use the JPEG library in your own program, and some
 of your program's files import one definition of boolean while some import the
 other, you can get all sorts of mysterious problems.  A good preventive step
 is to make the IJG library use "unsigned char" for boolean.  To do that,
 add something like this to your jconfig.h file:
-	/* Define "boolean" as unsigned char, not int, per Windows custom */
+	/* Define "boolean" as unsigned char, not enum, per Windows custom */
 	#ifndef __RPCNDR_H__	/* don't conflict if rpcndr.h already read */
 	typedef unsigned char boolean;
 	#endif
+	#ifndef FALSE		/* in case these macros already exist */
+	#define FALSE	0	/* values of boolean */
+	#endif
+	#ifndef TRUE
+	#define TRUE	1
+	#endif
 	#define HAVE_BOOLEAN	/* prevent jmorecfg.h from redefining it */
 (This is already in jconfig.vc, by the way.)
 

jcapistd.c

@@ -2,6 +2,7 @@
  * jcapistd.c
  *
  * Copyright (C) 1994-1996, Thomas G. Lane.
+ * Modified 2013 by Guido Vollbeding.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
@@ -145,7 +146,7 @@ jpeg_write_raw_data (j_compress_ptr cinfo, JSAMPIMAGE data,
     (*cinfo->master->pass_startup) (cinfo);
 
   /* Verify that at least one iMCU row has been passed. */
-  lines_per_iMCU_row = cinfo->max_v_samp_factor * DCTSIZE;
+  lines_per_iMCU_row = cinfo->max_v_samp_factor * cinfo->min_DCT_v_scaled_size;
   if (num_lines < lines_per_iMCU_row)
     ERREXIT(cinfo, JERR_BUFFER_SIZE);
 

jcarith.c

@@ -1,7 +1,7 @@
 /*
  * jcarith.c
  *
- * Developed 1997-2011 by Guido Vollbeding.
+ * Developed 1997-2013 by Guido Vollbeding.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
@@ -362,7 +362,6 @@ METHODDEF(boolean)
 encode_mcu_DC_first (j_compress_ptr cinfo, JBLOCKROW *MCU_data)
 {
   arith_entropy_ptr entropy = (arith_entropy_ptr) cinfo->entropy;
-  JBLOCKROW block;
   unsigned char *st;
   int blkn, ci, tbl;
   int v, v2, m;
@@ -381,14 +380,13 @@ encode_mcu_DC_first (j_compress_ptr cinfo, JBLOCKROW *MCU_data)
 
   /* Encode the MCU data blocks */
   for (blkn = 0; blkn < cinfo->blocks_in_MCU; blkn++) {
-    block = MCU_data[blkn];
     ci = cinfo->MCU_membership[blkn];
     tbl = cinfo->cur_comp_info[ci]->dc_tbl_no;
 
     /* Compute the DC value after the required point transform by Al.
      * This is simply an arithmetic right shift.
      */
-    m = IRIGHT_SHIFT((int) ((*block)[0]), cinfo->Al);
+    m = IRIGHT_SHIFT((int) (MCU_data[blkn][0][0]), cinfo->Al);
 
     /* Sections F.1.4.1 & F.1.4.4.1: Encoding of DC coefficients */
 
@@ -453,11 +451,11 @@ METHODDEF(boolean)
 encode_mcu_AC_first (j_compress_ptr cinfo, JBLOCKROW *MCU_data)
 {
   arith_entropy_ptr entropy = (arith_entropy_ptr) cinfo->entropy;
+  const int * natural_order;
   JBLOCKROW block;
   unsigned char *st;
   int tbl, k, ke;
   int v, v2, m;
-  const int * natural_order;
 
   /* Emit restart marker if needed */
   if (cinfo->restart_interval) {
@@ -479,7 +477,8 @@ encode_mcu_AC_first (j_compress_ptr cinfo, JBLOCKROW *MCU_data)
   /* Sections F.1.4.2 & F.1.4.4.2: Encoding of AC coefficients */
 
   /* Establish EOB (end-of-block) index */
-  for (ke = cinfo->Se; ke > 0; ke--)
+  ke = cinfo->Se;
+  do {
     /* We must apply the point transform by Al.  For AC coefficients this
      * is an integer division with rounding towards 0.  To do this portably
      * in C, we shift after obtaining the absolute value.
@@ -490,13 +489,14 @@ encode_mcu_AC_first (j_compress_ptr cinfo, JBLOCKROW *MCU_data)
       v = -v;
       if (v >>= cinfo->Al) break;
     }
+  } while (--ke);
 
   /* Figure F.5: Encode_AC_Coefficients */
-  for (k = cinfo->Ss; k <= ke; k++) {
-    st = entropy->ac_stats[tbl] + 3 * (k - 1);
+  for (k = cinfo->Ss - 1; k < ke;) {
+    st = entropy->ac_stats[tbl] + 3 * k;
     arith_encode(cinfo, st, 0);		/* EOB decision */
     for (;;) {
-      if ((v = (*block)[natural_order[k]]) >= 0) {
+      if ((v = (*block)[natural_order[++k]]) >= 0) {
 	if (v >>= cinfo->Al) {
 	  arith_encode(cinfo, st + 1, 1);
 	  arith_encode(cinfo, entropy->fixed_bin, 0);
@@ -510,7 +510,8 @@ encode_mcu_AC_first (j_compress_ptr cinfo, JBLOCKROW *MCU_data)
 	  break;
 	}
       }
-      arith_encode(cinfo, st + 1, 0); st += 3; k++;
+      arith_encode(cinfo, st + 1, 0);
+      st += 3;
     }
     st += 2;
     /* Figure F.8: Encoding the magnitude category of v */
@@ -537,9 +538,9 @@ encode_mcu_AC_first (j_compress_ptr cinfo, JBLOCKROW *MCU_data)
     while (m >>= 1)
       arith_encode(cinfo, st, (m & v) ? 1 : 0);
   }
-  /* Encode EOB decision only if k <= cinfo->Se */
-  if (k <= cinfo->Se) {
-    st = entropy->ac_stats[tbl] + 3 * (k - 1);
+  /* Encode EOB decision only if k < cinfo->Se */
+  if (k < cinfo->Se) {
+    st = entropy->ac_stats[tbl] + 3 * k;
     arith_encode(cinfo, st, 1);
   }
 
@@ -549,6 +550,8 @@ encode_mcu_AC_first (j_compress_ptr cinfo, JBLOCKROW *MCU_data)
 
 /*
  * MCU encoding for DC successive approximation refinement scan.
+ * Note: we assume such scans can be multi-component,
+ * although the spec is not very clear on the point.
  */
 
 METHODDEF(boolean)
@@ -590,11 +593,11 @@ METHODDEF(boolean)
 encode_mcu_AC_refine (j_compress_ptr cinfo, JBLOCKROW *MCU_data)
 {
   arith_entropy_ptr entropy = (arith_entropy_ptr) cinfo->entropy;
+  const int * natural_order;
   JBLOCKROW block;
   unsigned char *st;
   int tbl, k, ke, kex;
   int v;
-  const int * natural_order;
 
   /* Emit restart marker if needed */
   if (cinfo->restart_interval) {
@@ -616,7 +619,8 @@ encode_mcu_AC_refine (j_compress_ptr cinfo, JBLOCKROW *MCU_data)
   /* Section G.1.3.3: Encoding of AC coefficients */
 
   /* Establish EOB (end-of-block) index */
-  for (ke = cinfo->Se; ke > 0; ke--)
+  ke = cinfo->Se;
+  do {
     /* We must apply the point transform by Al.  For AC coefficients this
      * is an integer division with rounding towards 0.  To do this portably
      * in C, we shift after obtaining the absolute value.
@@ -627,6 +631,7 @@ encode_mcu_AC_refine (j_compress_ptr cinfo, JBLOCKROW *MCU_data)
       v = -v;
       if (v >>= cinfo->Al) break;
     }
+  } while (--ke);
 
   /* Establish EOBx (previous stage end-of-block) index */
   for (kex = ke; kex > 0; kex--)
@@ -638,12 +643,12 @@ encode_mcu_AC_refine (j_compress_ptr cinfo, JBLOCKROW *MCU_data)
     }
 
   /* Figure G.10: Encode_AC_Coefficients_SA */
-  for (k = cinfo->Ss; k <= ke; k++) {
-    st = entropy->ac_stats[tbl] + 3 * (k - 1);
-    if (k > kex)
+  for (k = cinfo->Ss - 1; k < ke;) {
+    st = entropy->ac_stats[tbl] + 3 * k;
+    if (k >= kex)
       arith_encode(cinfo, st, 0);	/* EOB decision */
     for (;;) {
-      if ((v = (*block)[natural_order[k]]) >= 0) {
+      if ((v = (*block)[natural_order[++k]]) >= 0) {
 	if (v >>= cinfo->Al) {
 	  if (v >> 1)			/* previously nonzero coef */
 	    arith_encode(cinfo, st + 2, (v & 1));
@@ -665,12 +670,13 @@ encode_mcu_AC_refine (j_compress_ptr cinfo, JBLOCKROW *MCU_data)
 	  break;
 	}
       }
-      arith_encode(cinfo, st + 1, 0); st += 3; k++;
+      arith_encode(cinfo, st + 1, 0);
+      st += 3;
     }
   }
-  /* Encode EOB decision only if k <= cinfo->Se */
-  if (k <= cinfo->Se) {
-    st = entropy->ac_stats[tbl] + 3 * (k - 1);
+  /* Encode EOB decision only if k < cinfo->Se */
+  if (k < cinfo->Se) {
+    st = entropy->ac_stats[tbl] + 3 * k;
     arith_encode(cinfo, st, 1);
   }
 
@@ -686,12 +692,13 @@ METHODDEF(boolean)
 encode_mcu (j_compress_ptr cinfo, JBLOCKROW *MCU_data)
 {
   arith_entropy_ptr entropy = (arith_entropy_ptr) cinfo->entropy;
-  jpeg_component_info * compptr;
+  const int * natural_order;
   JBLOCKROW block;
   unsigned char *st;
-  int blkn, ci, tbl, k, ke;
+  int tbl, k, ke;
   int v, v2, m;
-  const int * natural_order;
+  int blkn, ci;
+  jpeg_component_info * compptr;
 
   /* Emit restart marker if needed */
   if (cinfo->restart_interval) {
@@ -922,7 +929,7 @@ jinit_arith_encoder (j_compress_ptr cinfo)
   entropy = (arith_entropy_ptr)
     (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
 				SIZEOF(arith_entropy_encoder));
-  cinfo->entropy = (struct jpeg_entropy_encoder *) entropy;
+  cinfo->entropy = &entropy->pub;
   entropy->pub.start_pass = start_pass;
   entropy->pub.finish_pass = finish_pass;
 

jccolor.c

@@ -2,7 +2,7 @@
  * jccolor.c
  *
  * Copyright (C) 1991-1996, Thomas G. Lane.
- * Modified 2011 by Guido Vollbeding.
+ * Modified 2011-2013 by Guido Vollbeding.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
@@ -29,13 +29,25 @@ typedef my_color_converter * my_cconvert_ptr;
 /**************** RGB -> YCbCr conversion: most common case **************/
 
 /*
- * YCbCr is defined per CCIR 601-1, except that Cb and Cr are
- * normalized to the range 0..MAXJSAMPLE rather than -0.5 .. 0.5.
- * The conversion equations to be implemented are therefore
- *	Y  =  0.29900 * R + 0.58700 * G + 0.11400 * B
- *	Cb = -0.16874 * R - 0.33126 * G + 0.50000 * B  + CENTERJSAMPLE
- *	Cr =  0.50000 * R - 0.41869 * G - 0.08131 * B  + CENTERJSAMPLE
- * (These numbers are derived from TIFF 6.0 section 21, dated 3-June-92.)
+ * YCbCr is defined per Recommendation ITU-R BT.601-7 (03/2011),
+ * previously known as Recommendation CCIR 601-1, except that Cb and Cr
+ * are normalized to the range 0..MAXJSAMPLE rather than -0.5 .. 0.5.
+ * sRGB (standard RGB color space) is defined per IEC 61966-2-1:1999.
+ * sYCC (standard luma-chroma-chroma color space with extended gamut)
+ * is defined per IEC 61966-2-1:1999 Amendment A1:2003 Annex F.
+ * bg-sRGB and bg-sYCC (big gamut standard color spaces)
+ * are defined per IEC 61966-2-1:1999 Amendment A1:2003 Annex G.
+ * Note that the derived conversion coefficients given in some of these
+ * documents are imprecise.  The general conversion equations are
+ *	Y  = Kr * R + (1 - Kr - Kb) * G + Kb * B
+ *	Cb = 0.5 * (B - Y) / (1 - Kb)
+ *	Cr = 0.5 * (R - Y) / (1 - Kr)
+ * With Kr = 0.299 and Kb = 0.114 (derived according to SMPTE RP 177-1993
+ * from the 1953 FCC NTSC primaries and CIE Illuminant C),
+ * the conversion equations to be implemented are therefore
+ *	Y  =  0.299 * R + 0.587 * G + 0.114 * B
+ *	Cb = -0.168735892 * R - 0.331264108 * G + 0.5 * B + CENTERJSAMPLE
+ *	Cr =  0.5 * R - 0.418687589 * G - 0.081312411 * B + CENTERJSAMPLE
  * Note: older versions of the IJG code used a zero offset of MAXJSAMPLE/2,
  * rather than CENTERJSAMPLE, for Cb and Cr.  This gave equal positive and
  * negative swings for Cb/Cr, but meant that grayscale values (Cb=Cr=0)
@@ -49,9 +61,9 @@ typedef my_color_converter * my_cconvert_ptr;
  * For even more speed, we avoid doing any multiplications in the inner loop
  * by precalculating the constants times R,G,B for all possible values.
  * For 8-bit JSAMPLEs this is very reasonable (only 256 entries per table);
- * for 12-bit samples it is still acceptable.  It's not very reasonable for
- * 16-bit samples, but if you want lossless storage you shouldn't be changing
- * colorspace anyway.
+ * for 9-bit to 12-bit samples it is still acceptable.  It's not very
+ * reasonable for 16-bit samples, but if you want lossless storage you
+ * shouldn't be changing colorspace anyway.
  * The CENTERJSAMPLE offsets and the rounding fudge-factor of 0.5 are included
  * in the tables to save adding them separately in the inner loop.
  */
@@ -96,21 +108,21 @@ rgb_ycc_start (j_compress_ptr cinfo)
 				(TABLE_SIZE * SIZEOF(INT32)));
 
   for (i = 0; i <= MAXJSAMPLE; i++) {
-    rgb_ycc_tab[i+R_Y_OFF] = FIX(0.29900) * i;
-    rgb_ycc_tab[i+G_Y_OFF] = FIX(0.58700) * i;
-    rgb_ycc_tab[i+B_Y_OFF] = FIX(0.11400) * i     + ONE_HALF;
-    rgb_ycc_tab[i+R_CB_OFF] = (-FIX(0.16874)) * i;
-    rgb_ycc_tab[i+G_CB_OFF] = (-FIX(0.33126)) * i;
+    rgb_ycc_tab[i+R_Y_OFF] = FIX(0.299) * i;
+    rgb_ycc_tab[i+G_Y_OFF] = FIX(0.587) * i;
+    rgb_ycc_tab[i+B_Y_OFF] = FIX(0.114) * i   + ONE_HALF;
+    rgb_ycc_tab[i+R_CB_OFF] = (-FIX(0.168735892)) * i;
+    rgb_ycc_tab[i+G_CB_OFF] = (-FIX(0.331264108)) * i;
     /* We use a rounding fudge-factor of 0.5-epsilon for Cb and Cr.
      * This ensures that the maximum output will round to MAXJSAMPLE
      * not MAXJSAMPLE+1, and thus that we don't have to range-limit.
      */
-    rgb_ycc_tab[i+B_CB_OFF] = FIX(0.50000) * i    + CBCR_OFFSET + ONE_HALF-1;
+    rgb_ycc_tab[i+B_CB_OFF] = FIX(0.5) * i    + CBCR_OFFSET + ONE_HALF-1;
 /*  B=>Cb and R=>Cr tables are the same
-    rgb_ycc_tab[i+R_CR_OFF] = FIX(0.50000) * i    + CBCR_OFFSET + ONE_HALF-1;
+    rgb_ycc_tab[i+R_CR_OFF] = FIX(0.5) * i    + CBCR_OFFSET + ONE_HALF-1;
 */
-    rgb_ycc_tab[i+G_CR_OFF] = (-FIX(0.41869)) * i;
-    rgb_ycc_tab[i+B_CR_OFF] = (-FIX(0.08131)) * i;
+    rgb_ycc_tab[i+G_CR_OFF] = (-FIX(0.418687589)) * i;
+    rgb_ycc_tab[i+B_CR_OFF] = (-FIX(0.081312411)) * i;
   }
 }
 
@@ -133,8 +145,8 @@ rgb_ycc_convert (j_compress_ptr cinfo,
 		 JDIMENSION output_row, int num_rows)
 {
   my_cconvert_ptr cconvert = (my_cconvert_ptr) cinfo->cconvert;
-  register int r, g, b;
   register INT32 * ctab = cconvert->rgb_ycc_tab;
+  register int r, g, b;
   register JSAMPROW inptr;
   register JSAMPROW outptr0, outptr1, outptr2;
   register JDIMENSION col;
@@ -150,7 +162,6 @@ rgb_ycc_convert (j_compress_ptr cinfo,
       r = GETJSAMPLE(inptr[RGB_RED]);
       g = GETJSAMPLE(inptr[RGB_GREEN]);
       b = GETJSAMPLE(inptr[RGB_BLUE]);
-      inptr += RGB_PIXELSIZE;
       /* If the inputs are 0..MAXJSAMPLE, the outputs of these equations
        * must be too; we do not need an explicit range-limiting operation.
        * Hence the value being shifted is never negative, and we don't
@@ -168,6 +179,7 @@ rgb_ycc_convert (j_compress_ptr cinfo,
       outptr2[col] = (JSAMPLE)
 		((ctab[r+R_CR_OFF] + ctab[g+G_CR_OFF] + ctab[b+B_CR_OFF])
 		 >> SCALEBITS);
+      inptr += RGB_PIXELSIZE;
     }
   }
 }
@@ -189,8 +201,8 @@ rgb_gray_convert (j_compress_ptr cinfo,
 		  JDIMENSION output_row, int num_rows)
 {
   my_cconvert_ptr cconvert = (my_cconvert_ptr) cinfo->cconvert;
-  register int r, g, b;
   register INT32 * ctab = cconvert->rgb_ycc_tab;
+  register int r, g, b;
   register JSAMPROW inptr;
   register JSAMPROW outptr;
   register JDIMENSION col;
@@ -198,17 +210,16 @@ rgb_gray_convert (j_compress_ptr cinfo,
 
   while (--num_rows >= 0) {
     inptr = *input_buf++;
-    outptr = output_buf[0][output_row];
-    output_row++;
+    outptr = output_buf[0][output_row++];
     for (col = 0; col < num_cols; col++) {
       r = GETJSAMPLE(inptr[RGB_RED]);
       g = GETJSAMPLE(inptr[RGB_GREEN]);
       b = GETJSAMPLE(inptr[RGB_BLUE]);
-      inptr += RGB_PIXELSIZE;
       /* Y */
       outptr[col] = (JSAMPLE)
 		((ctab[r+R_Y_OFF] + ctab[g+G_Y_OFF] + ctab[b+B_Y_OFF])
 		 >> SCALEBITS);
+      inptr += RGB_PIXELSIZE;
     }
   }
 }
@@ -228,8 +239,8 @@ cmyk_ycck_convert (j_compress_ptr cinfo,
 		   JDIMENSION output_row, int num_rows)
 {
   my_cconvert_ptr cconvert = (my_cconvert_ptr) cinfo->cconvert;
-  register int r, g, b;
   register INT32 * ctab = cconvert->rgb_ycc_tab;
+  register int r, g, b;
   register JSAMPROW inptr;
   register JSAMPROW outptr0, outptr1, outptr2, outptr3;
   register JDIMENSION col;
@@ -248,7 +259,6 @@ cmyk_ycck_convert (j_compress_ptr cinfo,
       b = MAXJSAMPLE - GETJSAMPLE(inptr[2]);
       /* K passes through as-is */
       outptr3[col] = inptr[3];	/* don't need GETJSAMPLE here */
-      inptr += 4;
       /* If the inputs are 0..MAXJSAMPLE, the outputs of these equations
        * must be too; we do not need an explicit range-limiting operation.
        * Hence the value being shifted is never negative, and we don't
@@ -266,6 +276,49 @@ cmyk_ycck_convert (j_compress_ptr cinfo,
       outptr2[col] = (JSAMPLE)
 		((ctab[r+R_CR_OFF] + ctab[g+G_CR_OFF] + ctab[b+B_CR_OFF])
 		 >> SCALEBITS);
+      inptr += 4;
+    }
+  }
+}
+
+
+/*
+ * Convert some rows of samples to the JPEG colorspace.
+ * [R,G,B] to [R-G,G,B-G] conversion with modulo calculation
+ * (forward reversible color transform).
+ * This can be seen as an adaption of the general RGB->YCbCr
+ * conversion equation with Kr = Kb = 0, while replacing the
+ * normalization by modulo calculation.
+ */
+
+METHODDEF(void)
+rgb_rgb1_convert (j_compress_ptr cinfo,
+		  JSAMPARRAY input_buf, JSAMPIMAGE output_buf,
+		  JDIMENSION output_row, int num_rows)
+{
+  register int r, g, b;
+  register JSAMPROW inptr;
+  register JSAMPROW outptr0, outptr1, outptr2;
+  register JDIMENSION col;
+  JDIMENSION num_cols = cinfo->image_width;
+
+  while (--num_rows >= 0) {
+    inptr = *input_buf++;
+    outptr0 = output_buf[0][output_row];
+    outptr1 = output_buf[1][output_row];
+    outptr2 = output_buf[2][output_row];
+    output_row++;
+    for (col = 0; col < num_cols; col++) {
+      r = GETJSAMPLE(inptr[RGB_RED]);
+      g = GETJSAMPLE(inptr[RGB_GREEN]);
+      b = GETJSAMPLE(inptr[RGB_BLUE]);
+      /* Assume that MAXJSAMPLE+1 is a power of 2, so that the MOD
+       * (modulo) operator is equivalent to the bitmask operator AND.
+       */
+      outptr0[col] = (JSAMPLE) ((r - g + CENTERJSAMPLE) & MAXJSAMPLE);
+      outptr1[col] = (JSAMPLE) g;
+      outptr2[col] = (JSAMPLE) ((b - g + CENTERJSAMPLE) & MAXJSAMPLE);
+      inptr += RGB_PIXELSIZE;
     }
   }
 }
@@ -274,7 +327,7 @@ cmyk_ycck_convert (j_compress_ptr cinfo,
 /*
  * Convert some rows of samples to the JPEG colorspace.
  * This version handles grayscale output with no conversion.
- * The source can be either plain grayscale or YCbCr (since Y == gray).
+ * The source can be either plain grayscale or YCC (since Y == gray).
  */
 
 METHODDEF(void)
@@ -282,16 +335,15 @@ grayscale_convert (j_compress_ptr cinfo,
 		   JSAMPARRAY input_buf, JSAMPIMAGE output_buf,
 		   JDIMENSION output_row, int num_rows)
 {
+  int instride = cinfo->input_components;
   register JSAMPROW inptr;
   register JSAMPROW outptr;
   register JDIMENSION col;
   JDIMENSION num_cols = cinfo->image_width;
-  int instride = cinfo->input_components;
 
   while (--num_rows >= 0) {
     inptr = *input_buf++;
-    outptr = output_buf[0][output_row];
-    output_row++;
+    outptr = output_buf[0][output_row++];
     for (col = 0; col < num_cols; col++) {
       outptr[col] = inptr[0];	/* don't need GETJSAMPLE() here */
       inptr += instride;
@@ -344,20 +396,20 @@ null_convert (j_compress_ptr cinfo,
 	      JSAMPARRAY input_buf, JSAMPIMAGE output_buf,
 	      JDIMENSION output_row, int num_rows)
 {
+  int ci;
+  register int nc = cinfo->num_components;
   register JSAMPROW inptr;
   register JSAMPROW outptr;
   register JDIMENSION col;
-  register int ci;
-  int nc = cinfo->num_components;
   JDIMENSION num_cols = cinfo->image_width;
 
   while (--num_rows >= 0) {
     /* It seems fastest to make a separate pass for each component. */
     for (ci = 0; ci < nc; ci++) {
-      inptr = *input_buf;
+      inptr = input_buf[0] + ci;
       outptr = output_buf[ci][output_row];
       for (col = 0; col < num_cols; col++) {
-	outptr[col] = inptr[ci]; /* don't need GETJSAMPLE() here */
+	*outptr++ = *inptr;	/* don't need GETJSAMPLE() here */
 	inptr += nc;
       }
     }
@@ -390,7 +442,7 @@ jinit_color_converter (j_compress_ptr cinfo)
   cconvert = (my_cconvert_ptr)
     (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
 				SIZEOF(my_color_converter));
-  cinfo->cconvert = (struct jpeg_color_converter *) cconvert;
+  cinfo->cconvert = &cconvert->pub;
   /* set start_pass to null method until we find out differently */
   cconvert->pub.start_pass = null_method;
 
@@ -402,11 +454,13 @@ jinit_color_converter (j_compress_ptr cinfo)
     break;
 
   case JCS_RGB:
+  case JCS_BG_RGB:
     if (cinfo->input_components != RGB_PIXELSIZE)
       ERREXIT(cinfo, JERR_BAD_IN_COLORSPACE);
     break;
 
   case JCS_YCbCr:
+  case JCS_BG_YCC:
     if (cinfo->input_components != 3)
       ERREXIT(cinfo, JERR_BAD_IN_COLORSPACE);
     break;
@@ -423,40 +477,96 @@ jinit_color_converter (j_compress_ptr cinfo)
     break;
   }
 
+  /* Support color transform only for RGB colorspaces */
+  if (cinfo->color_transform &&
+      cinfo->jpeg_color_space != JCS_RGB &&
+      cinfo->jpeg_color_space != JCS_BG_RGB)
+    ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL);
+
   /* Check num_components, set conversion method based on requested space */
   switch (cinfo->jpeg_color_space) {
   case JCS_GRAYSCALE:
     if (cinfo->num_components != 1)
       ERREXIT(cinfo, JERR_BAD_J_COLORSPACE);
-    if (cinfo->in_color_space == JCS_GRAYSCALE ||
-	cinfo->in_color_space == JCS_YCbCr)
+    switch (cinfo->in_color_space) {
+    case JCS_GRAYSCALE:
+    case JCS_YCbCr:
+    case JCS_BG_YCC:
       cconvert->pub.color_convert = grayscale_convert;
-    else if (cinfo->in_color_space == JCS_RGB) {
+      break;
+    case JCS_RGB:
       cconvert->pub.start_pass = rgb_ycc_start;
       cconvert->pub.color_convert = rgb_gray_convert;
-    } else
+      break;
+    default:
       ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL);
+    }
     break;
 
   case JCS_RGB:
+  case JCS_BG_RGB:
     if (cinfo->num_components != 3)
       ERREXIT(cinfo, JERR_BAD_J_COLORSPACE);
-    if (cinfo->in_color_space == JCS_RGB)
+    if (cinfo->in_color_space == cinfo->jpeg_color_space) {
+      switch (cinfo->color_transform) {
+      case JCT_NONE:
 	cconvert->pub.color_convert = rgb_convert;
-    else
+	break;
+      case JCT_SUBTRACT_GREEN:
+	cconvert->pub.color_convert = rgb_rgb1_convert;
+	break;
+      default:
+	ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL);
+      }
+    } else
       ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL);
     break;
 
   case JCS_YCbCr:
     if (cinfo->num_components != 3)
       ERREXIT(cinfo, JERR_BAD_J_COLORSPACE);
-    if (cinfo->in_color_space == JCS_RGB) {
+    switch (cinfo->in_color_space) {
+    case JCS_RGB:
       cconvert->pub.start_pass = rgb_ycc_start;
       cconvert->pub.color_convert = rgb_ycc_convert;
-    } else if (cinfo->in_color_space == JCS_YCbCr)
+      break;
+    case JCS_YCbCr:
       cconvert->pub.color_convert = null_convert;
-    else
+      break;
+    default:
       ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL);
+    }
+    break;
+
+  case JCS_BG_YCC:
+    if (cinfo->num_components != 3)
+      ERREXIT(cinfo, JERR_BAD_J_COLORSPACE);
+    switch (cinfo->in_color_space) {
+    case JCS_RGB:
+      /* For conversion from normal RGB input to BG_YCC representation,
+       * the Cb/Cr values are first computed as usual, and then
+       * quantized further after DCT processing by a factor of
+       * 2 in reference to the nominal quantization factor.
+       */
+      /* need quantization scale by factor of 2 after DCT */
+      cinfo->comp_info[1].component_needed = TRUE;
+      cinfo->comp_info[2].component_needed = TRUE;
+      /* compute normal YCC first */
+      cconvert->pub.start_pass = rgb_ycc_start;
+      cconvert->pub.color_convert = rgb_ycc_convert;
+      break;
+    case JCS_YCbCr:
+      /* need quantization scale by factor of 2 after DCT */
+      cinfo->comp_info[1].component_needed = TRUE;
+      cinfo->comp_info[2].component_needed = TRUE;
+      /*FALLTHROUGH*/
+    case JCS_BG_YCC:
+      /* Pass through for BG_YCC input */
+      cconvert->pub.color_convert = null_convert;
+      break;
+    default:
+      ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL);
+    }
     break;
 
   case JCS_CMYK:
@@ -471,13 +581,17 @@ jinit_color_converter (j_compress_ptr cinfo)
   case JCS_YCCK:
     if (cinfo->num_components != 4)
       ERREXIT(cinfo, JERR_BAD_J_COLORSPACE);
-    if (cinfo->in_color_space == JCS_CMYK) {
+    switch (cinfo->in_color_space) {
+    case JCS_CMYK:
       cconvert->pub.start_pass = rgb_ycc_start;
       cconvert->pub.color_convert = cmyk_ycck_convert;
-    } else if (cinfo->in_color_space == JCS_YCCK)
+      break;
+    case JCS_YCCK:
       cconvert->pub.color_convert = null_convert;
-    else
+      break;
+    default:
       ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL);
+    }
     break;
 
   default:			/* allow null conversion of JCS_UNKNOWN */

jcdctmgr.c

@@ -2,6 +2,7 @@
  * jcdctmgr.c
  *
  * Copyright (C) 1994-1996, Thomas G. Lane.
+ * Modified 2003-2013 by Guido Vollbeding.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
@@ -25,22 +26,30 @@ typedef struct {
   /* Pointer to the DCT routine actually in use */
   forward_DCT_method_ptr do_dct[MAX_COMPONENTS];
 
-  /* The actual post-DCT divisors --- not identical to the quant table
-   * entries, because of scaling (especially for an unnormalized DCT).
-   * Each table is given in normal array order.
-   */
-  DCTELEM * divisors[NUM_QUANT_TBLS];
-
 #ifdef DCT_FLOAT_SUPPORTED
   /* Same as above for the floating-point case. */
   float_DCT_method_ptr do_float_dct[MAX_COMPONENTS];
-  FAST_FLOAT * float_divisors[NUM_QUANT_TBLS];
 #endif
 } my_fdct_controller;
 
 typedef my_fdct_controller * my_fdct_ptr;
 
 
+/* The allocated post-DCT divisor tables -- big enough for any
+ * supported variant and not identical to the quant table entries,
+ * because of scaling (especially for an unnormalized DCT) --
+ * are pointed to by dct_table in the per-component comp_info
+ * structures.  Each table is given in normal array order.
+ */
+
+typedef union {
+  DCTELEM int_array[DCTSIZE2];
+#ifdef DCT_FLOAT_SUPPORTED
+  FAST_FLOAT float_array[DCTSIZE2];
+#endif
+} divisor_table;
+
+
 /* The current scaled-DCT routines require ISLOW-style divisor tables,
  * so be sure to compile that code if either ISLOW or SCALING is requested.
  */
@@ -71,7 +80,7 @@ forward_DCT (j_compress_ptr cinfo, jpeg_component_info * compptr,
   /* This routine is heavily used, so it's worth coding it tightly. */
   my_fdct_ptr fdct = (my_fdct_ptr) cinfo->fdct;
   forward_DCT_method_ptr do_dct = fdct->do_dct[compptr->component_index];
-  DCTELEM * divisors = fdct->divisors[compptr->quant_tbl_no];
+  DCTELEM * divisors = (DCTELEM *) compptr->dct_table;
   DCTELEM workspace[DCTSIZE2];	/* work area for FDCT subroutine */
   JDIMENSION bi;
 
@@ -134,7 +143,7 @@ forward_DCT_float (j_compress_ptr cinfo, jpeg_component_info * compptr,
   /* This routine is heavily used, so it's worth coding it tightly. */
   my_fdct_ptr fdct = (my_fdct_ptr) cinfo->fdct;
   float_DCT_method_ptr do_dct = fdct->do_float_dct[compptr->component_index];
-  FAST_FLOAT * divisors = fdct->float_divisors[compptr->quant_tbl_no];
+  FAST_FLOAT * divisors = (FAST_FLOAT *) compptr->dct_table;
   FAST_FLOAT workspace[DCTSIZE2]; /* work area for FDCT subroutine */
   JDIMENSION bi;
 
@@ -352,22 +361,17 @@ start_pass_fdctmgr (j_compress_ptr cinfo)
 	cinfo->quant_tbl_ptrs[qtblno] == NULL)
       ERREXIT1(cinfo, JERR_NO_QUANT_TABLE, qtblno);
     qtbl = cinfo->quant_tbl_ptrs[qtblno];
-    /* Compute divisors for this quant table */
-    /* We may do this more than once for same table, but it's not a big deal */
+    /* Create divisor table from quant table */
     switch (method) {
 #ifdef PROVIDE_ISLOW_TABLES
     case JDCT_ISLOW:
       /* For LL&M IDCT method, divisors are equal to raw quantization
        * coefficients multiplied by 8 (to counteract scaling).
        */
-      if (fdct->divisors[qtblno] == NULL) {
-	fdct->divisors[qtblno] = (DCTELEM *)
-	  (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
-				      DCTSIZE2 * SIZEOF(DCTELEM));
-      }
-      dtbl = fdct->divisors[qtblno];
+      dtbl = (DCTELEM *) compptr->dct_table;
       for (i = 0; i < DCTSIZE2; i++) {
-	dtbl[i] = ((DCTELEM) qtbl->quantval[i]) << 3;
+	dtbl[i] =
+	  ((DCTELEM) qtbl->quantval[i]) << (compptr->component_needed ? 4 : 3);
       }
       fdct->pub.forward_DCT[ci] = forward_DCT;
       break;
@@ -395,17 +399,12 @@ start_pass_fdctmgr (j_compress_ptr cinfo)
 	};
 	SHIFT_TEMPS
 
-	if (fdct->divisors[qtblno] == NULL) {
-	  fdct->divisors[qtblno] = (DCTELEM *)
-	    (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
-					DCTSIZE2 * SIZEOF(DCTELEM));
-	}
-	dtbl = fdct->divisors[qtblno];
+	dtbl = (DCTELEM *) compptr->dct_table;
 	for (i = 0; i < DCTSIZE2; i++) {
 	  dtbl[i] = (DCTELEM)
 	    DESCALE(MULTIPLY16V16((INT32) qtbl->quantval[i],
 				  (INT32) aanscales[i]),
-		    CONST_BITS-3);
+		    compptr->component_needed ? CONST_BITS-4 : CONST_BITS-3);
 	}
       }
       fdct->pub.forward_DCT[ci] = forward_DCT;
@@ -422,25 +421,20 @@ start_pass_fdctmgr (j_compress_ptr cinfo)
 	 * What's actually stored is 1/divisor so that the inner loop can
 	 * use a multiplication rather than a division.
 	 */
-	FAST_FLOAT * fdtbl;
+	FAST_FLOAT * fdtbl = (FAST_FLOAT *) compptr->dct_table;
 	int row, col;
 	static const double aanscalefactor[DCTSIZE] = {
 	  1.0, 1.387039845, 1.306562965, 1.175875602,
 	  1.0, 0.785694958, 0.541196100, 0.275899379
 	};
 
-	if (fdct->float_divisors[qtblno] == NULL) {
-	  fdct->float_divisors[qtblno] = (FAST_FLOAT *)
-	    (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
-					DCTSIZE2 * SIZEOF(FAST_FLOAT));
-	}
-	fdtbl = fdct->float_divisors[qtblno];
 	i = 0;
 	for (row = 0; row < DCTSIZE; row++) {
 	  for (col = 0; col < DCTSIZE; col++) {
 	    fdtbl[i] = (FAST_FLOAT)
-	      (1.0 / (((double) qtbl->quantval[i] *
-		       aanscalefactor[row] * aanscalefactor[col] * 8.0)));
+	      (1.0 / ((double) qtbl->quantval[i] *
+		      aanscalefactor[row] * aanscalefactor[col] *
+		      (compptr->component_needed ? 16.0 : 8.0)));
 	    i++;
 	  }
 	}
@@ -464,19 +458,20 @@ GLOBAL(void)
 jinit_forward_dct (j_compress_ptr cinfo)
 {
   my_fdct_ptr fdct;
-  int i;
+  int ci;
+  jpeg_component_info *compptr;
 
   fdct = (my_fdct_ptr)
     (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
 				SIZEOF(my_fdct_controller));
-  cinfo->fdct = (struct jpeg_forward_dct *) fdct;
+  cinfo->fdct = &fdct->pub;
   fdct->pub.start_pass = start_pass_fdctmgr;
 
-  /* Mark divisor tables unallocated */
-  for (i = 0; i < NUM_QUANT_TBLS; i++) {
-    fdct->divisors[i] = NULL;
-#ifdef DCT_FLOAT_SUPPORTED
-    fdct->float_divisors[i] = NULL;
-#endif
+  for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
+       ci++, compptr++) {
+    /* Allocate a divisor table for each component */
+    compptr->dct_table =
+      (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
+				  SIZEOF(divisor_table));
   }
 }

jchuff.c

@@ -2,7 +2,7 @@
  * jchuff.c
  *
  * Copyright (C) 1991-1997, Thomas G. Lane.
- * Modified 2006-2009 by Guido Vollbeding.
+ * Modified 2006-2013 by Guido Vollbeding.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
@@ -308,20 +308,23 @@ emit_bits_s (working_state * state, unsigned int code, int size)
 /* Emit some bits; return TRUE if successful, FALSE if must suspend */
 {
   /* This routine is heavily used, so it's worth coding tightly. */
-  register INT32 put_buffer = (INT32) code;
-  register int put_bits = state->cur.put_bits;
+  register INT32 put_buffer;
+  register int put_bits;
 
   /* if size is 0, caller used an invalid Huffman table entry */
   if (size == 0)
     ERREXIT(state->cinfo, JERR_HUFF_MISSING_CODE);
 
-  put_buffer &= (((INT32) 1)<<size) - 1; /* mask off any extra bits in code */
+  /* mask off any extra bits in code */
+  put_buffer = ((INT32) code) & ((((INT32) 1) << size) - 1);
 
-  put_bits += size;		/* new number of bits in buffer */
+  /* new number of bits in buffer */
+  put_bits = size + state->cur.put_bits;
 
   put_buffer <<= 24 - put_bits; /* align incoming bits */
 
-  put_buffer |= state->cur.put_buffer; /* and merge with old buffer contents */
+  /* and merge with old buffer contents */
+  put_buffer |= state->cur.put_buffer;
 
   while (put_bits >= 8) {
     int c = (int) ((put_buffer >> 16) & 0xFF);
@@ -347,8 +350,8 @@ emit_bits_e (huff_entropy_ptr entropy, unsigned int code, int size)
 /* Emit some bits, unless we are in gather mode */
 {
   /* This routine is heavily used, so it's worth coding tightly. */
-  register INT32 put_buffer = (INT32) code;
-  register int put_bits = entropy->saved.put_bits;
+  register INT32 put_buffer;
+  register int put_bits;
 
   /* if size is 0, caller used an invalid Huffman table entry */
   if (size == 0)
@@ -357,9 +360,11 @@ emit_bits_e (huff_entropy_ptr entropy, unsigned int code, int size)
   if (entropy->gather_statistics)
     return;			/* do nothing if we're only getting stats */
 
-  put_buffer &= (((INT32) 1)<<size) - 1; /* mask off any extra bits in code */
+  /* mask off any extra bits in code */
+  put_buffer = ((INT32) code) & ((((INT32) 1) << size) - 1);
 
-  put_bits += size;		/* new number of bits in buffer */
+  /* new number of bits in buffer */
+  put_bits = size + entropy->saved.put_bits;
 
   put_buffer <<= 24 - put_bits; /* align incoming bits */
 
@@ -543,10 +548,7 @@ encode_mcu_DC_first (j_compress_ptr cinfo, JBLOCKROW *MCU_data)
   huff_entropy_ptr entropy = (huff_entropy_ptr) cinfo->entropy;
   register int temp, temp2;
   register int nbits;
-  int blkn, ci;
-  int Al = cinfo->Al;
-  JBLOCKROW block;
-  jpeg_component_info * compptr;
+  int blkn, ci, tbl;
   ISHIFT_TEMPS
 
   entropy->next_output_byte = cinfo->dest->next_output_byte;
@@ -559,21 +561,20 @@ encode_mcu_DC_first (j_compress_ptr cinfo, JBLOCKROW *MCU_data)
 
   /* Encode the MCU data blocks */
   for (blkn = 0; blkn < cinfo->blocks_in_MCU; blkn++) {
-    block = MCU_data[blkn];
     ci = cinfo->MCU_membership[blkn];
-    compptr = cinfo->cur_comp_info[ci];
+    tbl = cinfo->cur_comp_info[ci]->dc_tbl_no;
 
     /* Compute the DC value after the required point transform by Al.
      * This is simply an arithmetic right shift.
      */
-    temp2 = IRIGHT_SHIFT((int) ((*block)[0]), Al);
+    temp = IRIGHT_SHIFT((int) (MCU_data[blkn][0][0]), cinfo->Al);
 
     /* DC differences are figured on the point-transformed values. */
-    temp = temp2 - entropy->saved.last_dc_val[ci];
-    entropy->saved.last_dc_val[ci] = temp2;
+    temp2 = temp - entropy->saved.last_dc_val[ci];
+    entropy->saved.last_dc_val[ci] = temp;
 
     /* Encode the DC coefficient difference per section G.1.2.1 */
-    temp2 = temp;
+    temp = temp2;
     if (temp < 0) {
       temp = -temp;		/* temp is abs value of input */
       /* For a negative input, want temp2 = bitwise complement of abs(input) */
@@ -594,7 +595,7 @@ encode_mcu_DC_first (j_compress_ptr cinfo, JBLOCKROW *MCU_data)
       ERREXIT(cinfo, JERR_BAD_DCT_COEF);
 
     /* Count/emit the Huffman-coded symbol for the number of bits */
-    emit_dc_symbol(entropy, compptr->dc_tbl_no, nbits);
+    emit_dc_symbol(entropy, tbl, nbits);
 
     /* Emit that number of bits of the value, if positive, */
     /* or the complement of its magnitude, if negative. */
@@ -628,12 +629,12 @@ METHODDEF(boolean)
 encode_mcu_AC_first (j_compress_ptr cinfo, JBLOCKROW *MCU_data)
 {
   huff_entropy_ptr entropy = (huff_entropy_ptr) cinfo->entropy;
+  const int * natural_order;
+  JBLOCKROW block;
   register int temp, temp2;
   register int nbits;
   register int r, k;
   int Se, Al;
-  const int * natural_order;
-  JBLOCKROW block;
 
   entropy->next_output_byte = cinfo->dest->next_output_byte;
   entropy->free_in_buffer = cinfo->dest->free_in_buffer;
@@ -731,18 +732,15 @@ encode_mcu_AC_first (j_compress_ptr cinfo, JBLOCKROW *MCU_data)
 
 /*
  * MCU encoding for DC successive approximation refinement scan.
- * Note: we assume such scans can be multi-component, although the spec
- * is not very clear on the point.
+ * Note: we assume such scans can be multi-component,
+ * although the spec is not very clear on the point.
  */
 
 METHODDEF(boolean)
 encode_mcu_DC_refine (j_compress_ptr cinfo, JBLOCKROW *MCU_data)
 {
   huff_entropy_ptr entropy = (huff_entropy_ptr) cinfo->entropy;
-  register int temp;
-  int blkn;
-  int Al = cinfo->Al;
-  JBLOCKROW block;
+  int Al, blkn;
 
   entropy->next_output_byte = cinfo->dest->next_output_byte;
   entropy->free_in_buffer = cinfo->dest->free_in_buffer;
@@ -752,13 +750,12 @@ encode_mcu_DC_refine (j_compress_ptr cinfo, JBLOCKROW *MCU_data)
     if (entropy->restarts_to_go == 0)
       emit_restart_e(entropy, entropy->next_restart_num);
 
+  Al = cinfo->Al;
+
   /* Encode the MCU data blocks */
   for (blkn = 0; blkn < cinfo->blocks_in_MCU; blkn++) {
-    block = MCU_data[blkn];
-
     /* We simply emit the Al'th bit of the DC coefficient value. */
-    temp = (*block)[0];
-    emit_bits_e(entropy, (unsigned int) (temp >> Al), 1);
+    emit_bits_e(entropy, (unsigned int) (MCU_data[blkn][0][0] >> Al), 1);
   }
 
   cinfo->dest->next_output_byte = entropy->next_output_byte;
@@ -786,14 +783,14 @@ METHODDEF(boolean)
 encode_mcu_AC_refine (j_compress_ptr cinfo, JBLOCKROW *MCU_data)
 {
   huff_entropy_ptr entropy = (huff_entropy_ptr) cinfo->entropy;
+  const int * natural_order;
+  JBLOCKROW block;
   register int temp;
   register int r, k;
+  int Se, Al;
   int EOB;
   char *BR_buffer;
   unsigned int BR;
-  int Se, Al;
-  const int * natural_order;
-  JBLOCKROW block;
   int absvalues[DCTSIZE2];
 
   entropy->next_output_byte = cinfo->dest->next_output_byte;
@@ -918,7 +915,7 @@ encode_one_block (working_state * state, JCOEFPTR block, int last_dc_val,
 {
   register int temp, temp2;
   register int nbits;
-  register int k, r, i;
+  register int r, k;
   int Se = state->cinfo->lim_Se;
   const int * natural_order = state->cinfo->natural_order;
 
@@ -960,7 +957,7 @@ encode_one_block (working_state * state, JCOEFPTR block, int last_dc_val,
   r = 0;			/* r = run length of zeros */
 
   for (k = 1; k <= Se; k++) {
-    if ((temp = block[natural_order[k]]) == 0) {
+    if ((temp2 = block[natural_order[k]]) == 0) {
       r++;
     } else {
       /* if run length > 15, must emit special run-length-16 codes (0xF0) */
@@ -970,7 +967,7 @@ encode_one_block (working_state * state, JCOEFPTR block, int last_dc_val,
 	r -= 16;
       }
 
-      temp2 = temp;
+      temp = temp2;
       if (temp < 0) {
 	temp = -temp;		/* temp is abs value of input */
 	/* This code assumes we are on a two's complement machine */
@@ -986,8 +983,8 @@ encode_one_block (working_state * state, JCOEFPTR block, int last_dc_val,
 	ERREXIT(state->cinfo, JERR_BAD_DCT_COEF);
 
       /* Emit Huffman symbol for run length / number of bits */
-      i = (r << 4) + nbits;
-      if (! emit_bits_s(state, actbl->ehufco[i], actbl->ehufsi[i]))
+      temp = (r << 4) + nbits;
+      if (! emit_bits_s(state, actbl->ehufco[temp], actbl->ehufsi[temp]))
 	return FALSE;
 
       /* Emit that number of bits of the value, if positive, */
@@ -1124,7 +1121,7 @@ htest_one_block (j_compress_ptr cinfo, JCOEFPTR block, int last_dc_val,
 {
   register int temp;
   register int nbits;
-  register int k, r;
+  register int r, k;
   int Se = cinfo->lim_Se;
   const int * natural_order = cinfo->natural_order;
 
@@ -1562,7 +1559,7 @@ jinit_huff_encoder (j_compress_ptr cinfo)
   entropy = (huff_entropy_ptr)
     (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
 				SIZEOF(huff_entropy_encoder));
-  cinfo->entropy = (struct jpeg_entropy_encoder *) entropy;
+  cinfo->entropy = &entropy->pub;
   entropy->pub.start_pass = start_pass_huff;
 
   /* Mark tables unallocated */

jcinit.c

@@ -2,6 +2,7 @@
  * jcinit.c
  *
  * Copyright (C) 1991-1997, Thomas G. Lane.
+ * Modified 2003-2013 by Guido Vollbeding.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
@@ -29,6 +30,24 @@
 GLOBAL(void)
 jinit_compress_master (j_compress_ptr cinfo)
 {
+  long samplesperrow;
+  JDIMENSION jd_samplesperrow;
+
+  /* For now, precision must match compiled-in value... */
+  if (cinfo->data_precision != BITS_IN_JSAMPLE)
+    ERREXIT1(cinfo, JERR_BAD_PRECISION, cinfo->data_precision);
+
+  /* Sanity check on image dimensions */
+  if (cinfo->image_height <= 0 || cinfo->image_width <= 0 ||
+      cinfo->input_components <= 0)
+    ERREXIT(cinfo, JERR_EMPTY_IMAGE);
+
+  /* Width of an input scanline must be representable as JDIMENSION. */
+  samplesperrow = (long) cinfo->image_width * (long) cinfo->input_components;
+  jd_samplesperrow = (JDIMENSION) samplesperrow;
+  if ((long) jd_samplesperrow != samplesperrow)
+    ERREXIT(cinfo, JERR_WIDTH_OVERFLOW);
+
   /* Initialize master control (includes parameter checking/processing) */
   jinit_c_master_control(cinfo, FALSE /* full compression */);
 

jcmainct.c

@@ -2,6 +2,7 @@
  * jcmainct.c
  *
  * Copyright (C) 1994-1996, Thomas G. Lane.
+ * Modified 2003-2012 by Guido Vollbeding.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
@@ -68,32 +69,32 @@ METHODDEF(void) process_data_buffer_main
 METHODDEF(void)
 start_pass_main (j_compress_ptr cinfo, J_BUF_MODE pass_mode)
 {
-  my_main_ptr main = (my_main_ptr) cinfo->main;
+  my_main_ptr mainp = (my_main_ptr) cinfo->main;
 
   /* Do nothing in raw-data mode. */
   if (cinfo->raw_data_in)
     return;
 
-  main->cur_iMCU_row = 0;	/* initialize counters */
-  main->rowgroup_ctr = 0;
-  main->suspended = FALSE;
-  main->pass_mode = pass_mode;	/* save mode for use by process_data */
+  mainp->cur_iMCU_row = 0;	/* initialize counters */
+  mainp->rowgroup_ctr = 0;
+  mainp->suspended = FALSE;
+  mainp->pass_mode = pass_mode;	/* save mode for use by process_data */
 
   switch (pass_mode) {
   case JBUF_PASS_THRU:
 #ifdef FULL_MAIN_BUFFER_SUPPORTED
-    if (main->whole_image[0] != NULL)
+    if (mainp->whole_image[0] != NULL)
       ERREXIT(cinfo, JERR_BAD_BUFFER_MODE);
 #endif
-    main->pub.process_data = process_data_simple_main;
+    mainp->pub.process_data = process_data_simple_main;
     break;
 #ifdef FULL_MAIN_BUFFER_SUPPORTED
   case JBUF_SAVE_SOURCE:
   case JBUF_CRANK_DEST:
   case JBUF_SAVE_AND_PASS:
-    if (main->whole_image[0] == NULL)
+    if (mainp->whole_image[0] == NULL)
       ERREXIT(cinfo, JERR_BAD_BUFFER_MODE);
-    main->pub.process_data = process_data_buffer_main;
+    mainp->pub.process_data = process_data_buffer_main;
     break;
 #endif
   default:
@@ -114,46 +115,46 @@ process_data_simple_main (j_compress_ptr cinfo,
 			  JSAMPARRAY input_buf, JDIMENSION *in_row_ctr,
 			  JDIMENSION in_rows_avail)
 {
-  my_main_ptr main = (my_main_ptr) cinfo->main;
+  my_main_ptr mainp = (my_main_ptr) cinfo->main;
 
-  while (main->cur_iMCU_row < cinfo->total_iMCU_rows) {
+  while (mainp->cur_iMCU_row < cinfo->total_iMCU_rows) {
     /* Read input data if we haven't filled the main buffer yet */
-    if (main->rowgroup_ctr < (JDIMENSION) cinfo->min_DCT_v_scaled_size)
+    if (mainp->rowgroup_ctr < (JDIMENSION) cinfo->min_DCT_v_scaled_size)
       (*cinfo->prep->pre_process_data) (cinfo,
 					input_buf, in_row_ctr, in_rows_avail,
-					main->buffer, &main->rowgroup_ctr,
+					mainp->buffer, &mainp->rowgroup_ctr,
 					(JDIMENSION) cinfo->min_DCT_v_scaled_size);
 
     /* If we don't have a full iMCU row buffered, return to application for
      * more data.  Note that preprocessor will always pad to fill the iMCU row
      * at the bottom of the image.
      */
-    if (main->rowgroup_ctr != (JDIMENSION) cinfo->min_DCT_v_scaled_size)
+    if (mainp->rowgroup_ctr != (JDIMENSION) cinfo->min_DCT_v_scaled_size)
       return;
 
     /* Send the completed row to the compressor */
-    if (! (*cinfo->coef->compress_data) (cinfo, main->buffer)) {
+    if (! (*cinfo->coef->compress_data) (cinfo, mainp->buffer)) {
       /* If compressor did not consume the whole row, then we must need to
        * suspend processing and return to the application.  In this situation
        * we pretend we didn't yet consume the last input row; otherwise, if
        * it happened to be the last row of the image, the application would
        * think we were done.
        */
-      if (! main->suspended) {
+      if (! mainp->suspended) {
 	(*in_row_ctr)--;
-	main->suspended = TRUE;
+	mainp->suspended = TRUE;
       }
       return;
     }
     /* We did finish the row.  Undo our little suspension hack if a previous
      * call suspended; then mark the main buffer empty.
      */
-    if (main->suspended) {
+    if (mainp->suspended) {
       (*in_row_ctr)++;
-      main->suspended = FALSE;
+      mainp->suspended = FALSE;
     }
-    main->rowgroup_ctr = 0;
-    main->cur_iMCU_row++;
+    mainp->rowgroup_ctr = 0;
+    mainp->cur_iMCU_row++;
   }
 }
 
@@ -170,25 +171,27 @@ process_data_buffer_main (j_compress_ptr cinfo,
 			  JSAMPARRAY input_buf, JDIMENSION *in_row_ctr,
 			  JDIMENSION in_rows_avail)
 {
-  my_main_ptr main = (my_main_ptr) cinfo->main;
+  my_main_ptr mainp = (my_main_ptr) cinfo->main;
   int ci;
   jpeg_component_info *compptr;
-  boolean writing = (main->pass_mode != JBUF_CRANK_DEST);
+  boolean writing = (mainp->pass_mode != JBUF_CRANK_DEST);
 
-  while (main->cur_iMCU_row < cinfo->total_iMCU_rows) {
+  while (mainp->cur_iMCU_row < cinfo->total_iMCU_rows) {
     /* Realign the virtual buffers if at the start of an iMCU row. */
-    if (main->rowgroup_ctr == 0) {
+    if (mainp->rowgroup_ctr == 0) {
       for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
 	   ci++, compptr++) {
-	main->buffer[ci] = (*cinfo->mem->access_virt_sarray)
-	  ((j_common_ptr) cinfo, main->whole_image[ci],
-	   main->cur_iMCU_row * (compptr->v_samp_factor * DCTSIZE),
-	   (JDIMENSION) (compptr->v_samp_factor * DCTSIZE), writing);
+	mainp->buffer[ci] = (*cinfo->mem->access_virt_sarray)
+	  ((j_common_ptr) cinfo, mainp->whole_image[ci], mainp->cur_iMCU_row *
+	   ((JDIMENSION) (compptr->v_samp_factor * cinfo->min_DCT_v_scaled_size)),
+	   (JDIMENSION) (compptr->v_samp_factor * cinfo->min_DCT_v_scaled_size),
+	   writing);
       }
       /* In a read pass, pretend we just read some source data. */
       if (! writing) {
-	*in_row_ctr += cinfo->max_v_samp_factor * DCTSIZE;
-	main->rowgroup_ctr = DCTSIZE;
+	*in_row_ctr += (JDIMENSION)
+	  (cinfo->max_v_samp_factor * cinfo->min_DCT_v_scaled_size);
+	mainp->rowgroup_ctr = (JDIMENSION) cinfo->min_DCT_v_scaled_size;
       }
     }
 
@@ -197,40 +200,40 @@ process_data_buffer_main (j_compress_ptr cinfo,
     if (writing) {
       (*cinfo->prep->pre_process_data) (cinfo,
 					input_buf, in_row_ctr, in_rows_avail,
-					main->buffer, &main->rowgroup_ctr,
-					(JDIMENSION) DCTSIZE);
+					mainp->buffer, &mainp->rowgroup_ctr,
+					(JDIMENSION) cinfo->min_DCT_v_scaled_size);
       /* Return to application if we need more data to fill the iMCU row. */
-      if (main->rowgroup_ctr < DCTSIZE)
+      if (mainp->rowgroup_ctr < (JDIMENSION) cinfo->min_DCT_v_scaled_size)
 	return;
     }
 
     /* Emit data, unless this is a sink-only pass. */
-    if (main->pass_mode != JBUF_SAVE_SOURCE) {
-      if (! (*cinfo->coef->compress_data) (cinfo, main->buffer)) {
+    if (mainp->pass_mode != JBUF_SAVE_SOURCE) {
+      if (! (*cinfo->coef->compress_data) (cinfo, mainp->buffer)) {
 	/* If compressor did not consume the whole row, then we must need to
 	 * suspend processing and return to the application.  In this situation
 	 * we pretend we didn't yet consume the last input row; otherwise, if
 	 * it happened to be the last row of the image, the application would
 	 * think we were done.
 	 */
-	if (! main->suspended) {
+	if (! mainp->suspended) {
 	  (*in_row_ctr)--;
-	  main->suspended = TRUE;
+	  mainp->suspended = TRUE;
 	}
 	return;
       }
       /* We did finish the row.  Undo our little suspension hack if a previous
        * call suspended; then mark the main buffer empty.
        */
-      if (main->suspended) {
+      if (mainp->suspended) {
 	(*in_row_ctr)++;
-	main->suspended = FALSE;
+	mainp->suspended = FALSE;
       }
     }
 
     /* If get here, we are done with this iMCU row.  Mark buffer empty. */
-    main->rowgroup_ctr = 0;
-    main->cur_iMCU_row++;
+    mainp->rowgroup_ctr = 0;
+    mainp->cur_iMCU_row++;
   }
 }
 
@@ -244,15 +247,15 @@ process_data_buffer_main (j_compress_ptr cinfo,
 GLOBAL(void)
 jinit_c_main_controller (j_compress_ptr cinfo, boolean need_full_buffer)
 {
-  my_main_ptr main;
+  my_main_ptr mainp;
   int ci;
   jpeg_component_info *compptr;
 
-  main = (my_main_ptr)
+  mainp = (my_main_ptr)
     (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
 				SIZEOF(my_main_controller));
-  cinfo->main = (struct jpeg_c_main_controller *) main;
-  main->pub.start_pass = start_pass_main;
+  cinfo->main = &mainp->pub;
+  mainp->pub.start_pass = start_pass_main;
 
   /* We don't need to create a buffer in raw-data mode. */
   if (cinfo->raw_data_in)
@@ -267,11 +270,12 @@ jinit_c_main_controller (j_compress_ptr cinfo, boolean need_full_buffer)
     /* Note we pad the bottom to a multiple of the iMCU height */
     for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
 	 ci++, compptr++) {
-      main->whole_image[ci] = (*cinfo->mem->request_virt_sarray)
+      mainp->whole_image[ci] = (*cinfo->mem->request_virt_sarray)
 	((j_common_ptr) cinfo, JPOOL_IMAGE, FALSE,
-	 compptr->width_in_blocks * compptr->DCT_h_scaled_size,
-	 (JDIMENSION) jround_up((long) compptr->height_in_blocks,
-				(long) compptr->v_samp_factor) * DCTSIZE,
+	 compptr->width_in_blocks * ((JDIMENSION) compptr->DCT_h_scaled_size),
+	 ((JDIMENSION) jround_up((long) compptr->height_in_blocks,
+				 (long) compptr->v_samp_factor)) *
+	 ((JDIMENSION) cinfo->min_DCT_v_scaled_size),
 	 (JDIMENSION) (compptr->v_samp_factor * compptr->DCT_v_scaled_size));
     }
 #else
@@ -279,14 +283,14 @@ jinit_c_main_controller (j_compress_ptr cinfo, boolean need_full_buffer)
 #endif
   } else {
 #ifdef FULL_MAIN_BUFFER_SUPPORTED
-    main->whole_image[0] = NULL; /* flag for no virtual arrays */
+    mainp->whole_image[0] = NULL; /* flag for no virtual arrays */
 #endif
     /* Allocate a strip buffer for each component */
     for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
 	 ci++, compptr++) {
-      main->buffer[ci] = (*cinfo->mem->alloc_sarray)
+      mainp->buffer[ci] = (*cinfo->mem->alloc_sarray)
 	((j_common_ptr) cinfo, JPOOL_IMAGE,
-	 compptr->width_in_blocks * compptr->DCT_h_scaled_size,
+	 compptr->width_in_blocks * ((JDIMENSION) compptr->DCT_h_scaled_size),
 	 (JDIMENSION) (compptr->v_samp_factor * compptr->DCT_v_scaled_size));
     }
   }

jcmarker.c

@@ -2,7 +2,7 @@
  * jcmarker.c
  *
  * Copyright (C) 1991-1998, Thomas G. Lane.
- * Modified 2003-2010 by Guido Vollbeding.
+ * Modified 2003-2013 by Guido Vollbeding.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
@@ -73,6 +73,7 @@ typedef enum {			/* JPEG marker codes */
   M_APP15 = 0xef,
 
   M_JPG0  = 0xf0,
+  M_JPG8  = 0xf8,
   M_JPG13 = 0xfd,
   M_COM   = 0xfe,
 
@@ -281,6 +282,37 @@ emit_dri (j_compress_ptr cinfo)
 }
 
 
+LOCAL(void)
+emit_lse_ict (j_compress_ptr cinfo)
+/* Emit an LSE inverse color transform specification marker */
+{
+  /* Support only 1 transform */
+  if (cinfo->color_transform != JCT_SUBTRACT_GREEN ||
+      cinfo->num_components < 3)
+    ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL);
+
+  emit_marker(cinfo, M_JPG8);
+  
+  emit_2bytes(cinfo, 24);	/* fixed length */
+
+  emit_byte(cinfo, 0x0D);	/* ID inverse transform specification */
+  emit_2bytes(cinfo, MAXJSAMPLE);	/* MAXTRANS */
+  emit_byte(cinfo, 3);		/* Nt=3 */
+  emit_byte(cinfo, cinfo->comp_info[1].component_id);
+  emit_byte(cinfo, cinfo->comp_info[0].component_id);
+  emit_byte(cinfo, cinfo->comp_info[2].component_id);
+  emit_byte(cinfo, 0x80);	/* F1: CENTER1=1, NORM1=0 */
+  emit_2bytes(cinfo, 0);	/* A(1,1)=0 */
+  emit_2bytes(cinfo, 0);	/* A(1,2)=0 */
+  emit_byte(cinfo, 0);		/* F2: CENTER2=0, NORM2=0 */
+  emit_2bytes(cinfo, 1);	/* A(2,1)=1 */
+  emit_2bytes(cinfo, 0);	/* A(2,2)=0 */
+  emit_byte(cinfo, 0);		/* F3: CENTER3=0, NORM3=0 */
+  emit_2bytes(cinfo, 1);	/* A(3,1)=1 */
+  emit_2bytes(cinfo, 0);	/* A(3,2)=0 */
+}
+
+
 LOCAL(void)
 emit_sof (j_compress_ptr cinfo, JPEG_MARKER code)
 /* Emit a SOF marker */
@@ -476,8 +508,8 @@ write_marker_byte (j_compress_ptr cinfo, int val)
  * Write datastream header.
  * This consists of an SOI and optional APPn markers.
  * We recommend use of the JFIF marker, but not the Adobe marker,
- * when using YCbCr or grayscale data.  The JFIF marker should NOT
- * be used for any other JPEG colorspace.  The Adobe marker is helpful
+ * when using YCbCr or grayscale data.  The JFIF marker is also used
+ * for other standard JPEG colorspaces.  The Adobe marker is helpful
  * to distinguish RGB, CMYK, and YCCK colorspaces.
  * Note that an application can write additional header markers after
  * jpeg_start_compress returns.
@@ -502,7 +534,8 @@ write_file_header (j_compress_ptr cinfo)
 
 /*
  * Write frame header.
- * This consists of DQT and SOFn markers, and a conditional pseudo SOS marker.
+ * This consists of DQT and SOFn markers,
+ * a conditional LSE marker and a conditional pseudo SOS marker.
  * Note that we do not emit the SOF until we have emitted the DQT(s).
  * This avoids compatibility problems with incorrect implementations that
  * try to error-check the quant table numbers as soon as they see the SOF.
@@ -560,6 +593,10 @@ write_frame_header (j_compress_ptr cinfo)
       emit_sof(cinfo, M_SOF1);	/* SOF code for non-baseline Huffman file */
   }
 
+  /* Check to emit LSE inverse color transform specification marker */
+  if (cinfo->color_transform)
+    emit_lse_ict(cinfo);
+
   /* Check to emit pseudo SOS marker */
   if (cinfo->progressive_mode && cinfo->block_size != DCTSIZE)
     emit_pseudo_sos(cinfo);
@@ -668,7 +705,7 @@ jinit_marker_writer (j_compress_ptr cinfo)
   marker = (my_marker_ptr)
     (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
 				SIZEOF(my_marker_writer));
-  cinfo->marker = (struct jpeg_marker_writer *) marker;
+  cinfo->marker = &marker->pub;
   /* Initialize method pointers */
   marker->pub.write_file_header = write_file_header;
   marker->pub.write_frame_header = write_frame_header;

jcmaster.c

@@ -2,7 +2,7 @@
  * jcmaster.c
  *
  * Copyright (C) 1991-1997, Thomas G. Lane.
- * Modified 2003-2011 by Guido Vollbeding.
+ * Modified 2003-2013 by Guido Vollbeding.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
@@ -222,8 +222,6 @@ initial_setup (j_compress_ptr cinfo, boolean transcode_only)
 {
   int ci, ssize;
   jpeg_component_info *compptr;
-  long samplesperrow;
-  JDIMENSION jd_samplesperrow;
 
   if (transcode_only)
     jpeg_calc_trans_dimensions(cinfo);
@@ -251,7 +249,7 @@ initial_setup (j_compress_ptr cinfo, boolean transcode_only)
 
   /* Sanity check on image dimensions */
   if (cinfo->jpeg_height <= 0 || cinfo->jpeg_width <= 0 ||
-      cinfo->num_components <= 0 || cinfo->input_components <= 0)
+      cinfo->num_components <= 0)
     ERREXIT(cinfo, JERR_EMPTY_IMAGE);
 
   /* Make sure image isn't bigger than I can handle */
@@ -259,14 +257,8 @@ initial_setup (j_compress_ptr cinfo, boolean transcode_only)
       (long) cinfo->jpeg_width > (long) JPEG_MAX_DIMENSION)
     ERREXIT1(cinfo, JERR_IMAGE_TOO_BIG, (unsigned int) JPEG_MAX_DIMENSION);
 
-  /* Width of an input scanline must be representable as JDIMENSION. */
-  samplesperrow = (long) cinfo->image_width * (long) cinfo->input_components;
-  jd_samplesperrow = (JDIMENSION) samplesperrow;
-  if ((long) jd_samplesperrow != samplesperrow)
-    ERREXIT(cinfo, JERR_WIDTH_OVERFLOW);
-
-  /* For now, precision must match compiled-in value... */
-  if (cinfo->data_precision != BITS_IN_JSAMPLE)
+  /* Only 8 to 12 bits data precision are supported for DCT based JPEG */
+  if (cinfo->data_precision < 8 || cinfo->data_precision > 12)
     ERREXIT1(cinfo, JERR_BAD_PRECISION, cinfo->data_precision);
 
   /* Check that number of components won't exceed internal array sizes */
@@ -339,8 +331,10 @@ initial_setup (j_compress_ptr cinfo, boolean transcode_only)
       jdiv_round_up((long) cinfo->jpeg_height *
 		    (long) (compptr->v_samp_factor * compptr->DCT_v_scaled_size),
 		    (long) (cinfo->max_v_samp_factor * cinfo->block_size));
-    /* Mark component needed (this flag isn't actually used for compression) */
-    compptr->component_needed = TRUE;
+    /* Don't need quantization scale after DCT,
+     * until color conversion says otherwise.
+     */
+    compptr->component_needed = FALSE;
   }
 
   /* Compute number of fully interleaved MCU rows (number of times that
@@ -811,7 +805,7 @@ jinit_c_master_control (j_compress_ptr cinfo, boolean transcode_only)
   master = (my_master_ptr)
       (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
 				  SIZEOF(my_comp_master));
-  cinfo->master = (struct jpeg_comp_master *) master;
+  cinfo->master = &master->pub;
   master->pub.prepare_for_pass = prepare_for_pass;
   master->pub.pass_startup = pass_startup;
   master->pub.finish_pass = finish_pass_master;
@@ -833,10 +827,14 @@ jinit_c_master_control (j_compress_ptr cinfo, boolean transcode_only)
     cinfo->num_scans = 1;
   }
 
-  if ((cinfo->progressive_mode || cinfo->block_size < DCTSIZE) &&
-      !cinfo->arith_code)			/*  TEMPORARY HACK ??? */
-    /* assume default tables no good for progressive or downscale mode */
-    cinfo->optimize_coding = TRUE;
+  if (cinfo->optimize_coding)
+    cinfo->arith_code = FALSE; /* disable arithmetic coding */
+  else if (! cinfo->arith_code &&
+	   (cinfo->progressive_mode ||
+	    (cinfo->block_size > 1 && cinfo->block_size < DCTSIZE)))
+    /* TEMPORARY HACK ??? */
+    /* assume default tables no good for progressive or reduced AC mode */
+    cinfo->optimize_coding = TRUE; /* force Huffman optimization */
 
   /* Initialize my private state */
   if (transcode_only) {

jconfig.cfg

@@ -17,11 +17,17 @@
 /* Define this if you get warnings about undefined structures. */
 #undef INCOMPLETE_TYPES_BROKEN
 
-/* Define "boolean" as unsigned char, not int, on Windows systems. */
+/* Define "boolean" as unsigned char, not enum, on Windows systems. */
 #ifdef _WIN32
 #ifndef __RPCNDR_H__		/* don't conflict if rpcndr.h already read */
 typedef unsigned char boolean;
 #endif
+#ifndef FALSE			/* in case these macros already exist */
+#define FALSE	0		/* values of boolean */
+#endif
+#ifndef TRUE
+#define TRUE	1
+#endif
 #define HAVE_BOOLEAN		/* prevent jmorecfg.h from redefining it */
 #endif
 

jconfig.txt

@@ -2,6 +2,7 @@
  * jconfig.txt
  *
  * Copyright (C) 1991-1994, Thomas G. Lane.
+ * Modified 2009-2013 by Guido Vollbeding.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
@@ -91,12 +92,18 @@
  */
 #undef INCOMPLETE_TYPES_BROKEN
 
-/* Define "boolean" as unsigned char, not int, on Windows systems.
+/* Define "boolean" as unsigned char, not enum, on Windows systems.
  */
 #ifdef _WIN32
 #ifndef __RPCNDR_H__		/* don't conflict if rpcndr.h already read */
 typedef unsigned char boolean;
 #endif
+#ifndef FALSE			/* in case these macros already exist */
+#define FALSE	0		/* values of boolean */
+#endif
+#ifndef TRUE
+#define TRUE	1
+#endif
 #define HAVE_BOOLEAN		/* prevent jmorecfg.h from redefining it */
 #endif
 

jconfig.vc

@@ -15,10 +15,16 @@
 #undef NEED_SHORT_EXTERNAL_NAMES
 #undef INCOMPLETE_TYPES_BROKEN
 
-/* Define "boolean" as unsigned char, not int, per Windows custom */
+/* Define "boolean" as unsigned char, not enum, per Windows custom */
 #ifndef __RPCNDR_H__		/* don't conflict if rpcndr.h already read */
 typedef unsigned char boolean;
 #endif
+#ifndef FALSE			/* in case these macros already exist */
+#define FALSE	0		/* values of boolean */
+#endif
+#ifndef TRUE
+#define TRUE	1
+#endif
 #define HAVE_BOOLEAN		/* prevent jmorecfg.h from redefining it */
 
 

jcparam.c

@@ -2,7 +2,7 @@
  * jcparam.c
  *
  * Copyright (C) 1991-1998, Thomas G. Lane.
- * Modified 2003-2008 by Guido Vollbeding.
+ * Modified 2003-2013 by Guido Vollbeding.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
@@ -150,7 +150,7 @@ jpeg_set_quality (j_compress_ptr cinfo, int quality, boolean force_baseline)
 /* Set or change the 'quality' (quantization) setting, using default tables.
  * This is the standard quality-adjusting entry point for typical user
  * interfaces; only those who want detailed control over quantization tables
- * would use the preceding three routines directly.
+ * would use the preceding routines directly.
  */
 {
   /* Convert user 0-100 rating to percentage scaling */
@@ -323,18 +323,17 @@ jpeg_set_defaults (j_compress_ptr cinfo)
   /* Expect normal source image, not raw downsampled data */
   cinfo->raw_data_in = FALSE;
 
-  /* Use Huffman coding, not arithmetic coding, by default */
-  cinfo->arith_code = FALSE;
+  /* The standard Huffman tables are only valid for 8-bit data precision.
+   * If the precision is higher, use arithmetic coding.
+   * (Alternatively, using Huffman coding would be possible with forcing
+   * optimization on so that usable tables will be computed, or by
+   * supplying default tables that are valid for the desired precision.)
+   * Otherwise, use Huffman coding by default.
+   */
+  cinfo->arith_code = cinfo->data_precision > 8 ? TRUE : FALSE;
 
   /* By default, don't do extra passes to optimize entropy coding */
   cinfo->optimize_coding = FALSE;
-  /* The standard Huffman tables are only valid for 8-bit data precision.
-   * If the precision is higher, force optimization on so that usable
-   * tables will be computed.  This test can be removed if default tables
-   * are supplied that are valid for the desired precision.
-   */
-  if (cinfo->data_precision > 8)
-    cinfo->optimize_coding = TRUE;
 
   /* By default, use the simpler non-cosited sampling alignment */
   cinfo->CCIR601_sampling = FALSE;
@@ -360,6 +359,9 @@ jpeg_set_defaults (j_compress_ptr cinfo)
    * JFIF_minor_version to 2.  We could probably get away with just defaulting
    * to 1.02, but there may still be some decoders in use that will complain
    * about that; saying 1.01 should minimize compatibility problems.
+   *
+   * For wide gamut colorspaces (BG_RGB and BG_YCC), the major version will be
+   * overridden by jpeg_set_colorspace and set to 2.
    */
   cinfo->JFIF_major_version = 1; /* Default JFIF version = 1.01 */
   cinfo->JFIF_minor_version = 1;
@@ -367,6 +369,9 @@ jpeg_set_defaults (j_compress_ptr cinfo)
   cinfo->X_density = 1;		/* Pixel aspect ratio is square by default */
   cinfo->Y_density = 1;
 
+  /* No color transform */
+  cinfo->color_transform = JCT_NONE;
+
   /* Choose JPEG colorspace based on input space, set defaults accordingly */
 
   jpeg_default_colorspace(cinfo);
@@ -381,6 +386,9 @@ GLOBAL(void)
 jpeg_default_colorspace (j_compress_ptr cinfo)
 {
   switch (cinfo->in_color_space) {
+  case JCS_UNKNOWN:
+    jpeg_set_colorspace(cinfo, JCS_UNKNOWN);
+    break;
   case JCS_GRAYSCALE:
     jpeg_set_colorspace(cinfo, JCS_GRAYSCALE);
     break;
@@ -396,8 +404,12 @@ jpeg_default_colorspace (j_compress_ptr cinfo)
   case JCS_YCCK:
     jpeg_set_colorspace(cinfo, JCS_YCCK);
     break;
-  case JCS_UNKNOWN:
-    jpeg_set_colorspace(cinfo, JCS_UNKNOWN);
+  case JCS_BG_RGB:
+    /* No translation for now -- conversion to BG_YCC not yet supportet */
+    jpeg_set_colorspace(cinfo, JCS_BG_RGB);
+    break;
+  case JCS_BG_YCC:
+    jpeg_set_colorspace(cinfo, JCS_BG_YCC);
     break;
   default:
     ERREXIT(cinfo, JERR_BAD_IN_COLORSPACE);
@@ -438,27 +450,40 @@ jpeg_set_colorspace (j_compress_ptr cinfo, J_COLOR_SPACE colorspace)
   cinfo->write_Adobe_marker = FALSE; /* write no Adobe marker by default */
 
   switch (colorspace) {
+  case JCS_UNKNOWN:
+    cinfo->num_components = cinfo->input_components;
+    if (cinfo->num_components < 1 || cinfo->num_components > MAX_COMPONENTS)
+      ERREXIT2(cinfo, JERR_COMPONENT_COUNT, cinfo->num_components,
+	       MAX_COMPONENTS);
+    for (ci = 0; ci < cinfo->num_components; ci++) {
+      SET_COMP(ci, ci, 1,1, 0, 0,0);
+    }
+    break;
   case JCS_GRAYSCALE:
     cinfo->write_JFIF_header = TRUE; /* Write a JFIF marker */
     cinfo->num_components = 1;
     /* JFIF specifies component ID 1 */
-    SET_COMP(0, 1, 1,1, 0, 0,0);
+    SET_COMP(0, 0x01, 1,1, 0, 0,0);
     break;
   case JCS_RGB:
     cinfo->write_Adobe_marker = TRUE; /* write Adobe marker to flag RGB */
     cinfo->num_components = 3;
-    SET_COMP(0, 0x52 /* 'R' */, 1,1, 0, 0,0);
+    SET_COMP(0, 0x52 /* 'R' */, 1,1, 0,
+		cinfo->color_transform == JCT_SUBTRACT_GREEN ? 1 : 0,
+		cinfo->color_transform == JCT_SUBTRACT_GREEN ? 1 : 0);
     SET_COMP(1, 0x47 /* 'G' */, 1,1, 0, 0,0);
-    SET_COMP(2, 0x42 /* 'B' */, 1,1, 0, 0,0);
+    SET_COMP(2, 0x42 /* 'B' */, 1,1, 0,
+		cinfo->color_transform == JCT_SUBTRACT_GREEN ? 1 : 0,
+		cinfo->color_transform == JCT_SUBTRACT_GREEN ? 1 : 0);
     break;
   case JCS_YCbCr:
     cinfo->write_JFIF_header = TRUE; /* Write a JFIF marker */
     cinfo->num_components = 3;
     /* JFIF specifies component IDs 1,2,3 */
     /* We default to 2x2 subsamples of chrominance */
-    SET_COMP(0, 1, 2,2, 0, 0,0);
-    SET_COMP(1, 2, 1,1, 1, 1,1);
-    SET_COMP(2, 3, 1,1, 1, 1,1);
+    SET_COMP(0, 0x01, 2,2, 0, 0,0);
+    SET_COMP(1, 0x02, 1,1, 1, 1,1);
+    SET_COMP(2, 0x03, 1,1, 1, 1,1);
     break;
   case JCS_CMYK:
     cinfo->write_Adobe_marker = TRUE; /* write Adobe marker to flag CMYK */
@@ -471,19 +496,33 @@ jpeg_set_colorspace (j_compress_ptr cinfo, J_COLOR_SPACE colorspace)
   case JCS_YCCK:
     cinfo->write_Adobe_marker = TRUE; /* write Adobe marker to flag YCCK */
     cinfo->num_components = 4;
-    SET_COMP(0, 1, 2,2, 0, 0,0);
-    SET_COMP(1, 2, 1,1, 1, 1,1);
-    SET_COMP(2, 3, 1,1, 1, 1,1);
-    SET_COMP(3, 4, 2,2, 0, 0,0);
+    SET_COMP(0, 0x01, 2,2, 0, 0,0);
+    SET_COMP(1, 0x02, 1,1, 1, 1,1);
+    SET_COMP(2, 0x03, 1,1, 1, 1,1);
+    SET_COMP(3, 0x04, 2,2, 0, 0,0);
     break;
-  case JCS_UNKNOWN:
-    cinfo->num_components = cinfo->input_components;
-    if (cinfo->num_components < 1 || cinfo->num_components > MAX_COMPONENTS)
-      ERREXIT2(cinfo, JERR_COMPONENT_COUNT, cinfo->num_components,
-	       MAX_COMPONENTS);
-    for (ci = 0; ci < cinfo->num_components; ci++) {
-      SET_COMP(ci, ci, 1,1, 0, 0,0);
-    }
+  case JCS_BG_RGB:
+    cinfo->write_JFIF_header = TRUE; /* Write a JFIF marker */
+    cinfo->JFIF_major_version = 2;   /* Set JFIF major version = 2 */
+    cinfo->num_components = 3;
+    /* Add offset 0x20 to the normal R/G/B component IDs */
+    SET_COMP(0, 0x72 /* 'r' */, 1,1, 0,
+		cinfo->color_transform == JCT_SUBTRACT_GREEN ? 1 : 0,
+		cinfo->color_transform == JCT_SUBTRACT_GREEN ? 1 : 0);
+    SET_COMP(1, 0x67 /* 'g' */, 1,1, 0, 0,0);
+    SET_COMP(2, 0x62 /* 'b' */, 1,1, 0,
+		cinfo->color_transform == JCT_SUBTRACT_GREEN ? 1 : 0,
+		cinfo->color_transform == JCT_SUBTRACT_GREEN ? 1 : 0);
+    break;
+  case JCS_BG_YCC:
+    cinfo->write_JFIF_header = TRUE; /* Write a JFIF marker */
+    cinfo->JFIF_major_version = 2;   /* Set JFIF major version = 2 */
+    cinfo->num_components = 3;
+    /* Add offset 0x20 to the normal Cb/Cr component IDs */
+    /* We default to 2x2 subsamples of chrominance */
+    SET_COMP(0, 0x01, 2,2, 0, 0,0);
+    SET_COMP(1, 0x22, 1,1, 1, 1,1);
+    SET_COMP(2, 0x23, 1,1, 1, 1,1);
     break;
   default:
     ERREXIT(cinfo, JERR_BAD_J_COLORSPACE);
@@ -567,8 +606,10 @@ jpeg_simple_progression (j_compress_ptr cinfo)
     ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
 
   /* Figure space needed for script.  Calculation must match code below! */
-  if (ncomps == 3 && cinfo->jpeg_color_space == JCS_YCbCr) {
-    /* Custom script for YCbCr color images. */
+  if (ncomps == 3 &&
+      (cinfo->jpeg_color_space == JCS_YCbCr ||
+       cinfo->jpeg_color_space == JCS_BG_YCC)) {
+    /* Custom script for YCC color images. */
     nscans = 10;
   } else {
     /* All-purpose script for other color spaces. */
@@ -583,7 +624,7 @@ jpeg_simple_progression (j_compress_ptr cinfo)
    * multiple compressions without changing the settings.  To avoid a memory
    * leak if jpeg_simple_progression is called repeatedly for the same JPEG
    * object, we try to re-use previously allocated space, and we allocate
-   * enough space to handle YCbCr even if initially asked for grayscale.
+   * enough space to handle YCC even if initially asked for grayscale.
    */
   if (cinfo->script_space == NULL || cinfo->script_space_size < nscans) {
     cinfo->script_space_size = MAX(nscans, 10);
@@ -595,8 +636,10 @@ jpeg_simple_progression (j_compress_ptr cinfo)
   cinfo->scan_info = scanptr;
   cinfo->num_scans = nscans;
 
-  if (ncomps == 3 && cinfo->jpeg_color_space == JCS_YCbCr) {
-    /* Custom script for YCbCr color images. */
+  if (ncomps == 3 &&
+      (cinfo->jpeg_color_space == JCS_YCbCr ||
+       cinfo->jpeg_color_space == JCS_BG_YCC)) {
+    /* Custom script for YCC color images. */
     /* Initial DC scan */
     scanptr = fill_dc_scans(scanptr, ncomps, 0, 1);
     /* Initial AC scan: get some luma data out in a hurry */

jctrans.c

@@ -2,7 +2,7 @@
  * jctrans.c
  *
  * Copyright (C) 1995-1998, Thomas G. Lane.
- * Modified 2000-2011 by Guido Vollbeding.
+ * Modified 2000-2013 by Guido Vollbeding.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
@@ -85,7 +85,10 @@ jpeg_copy_critical_parameters (j_decompress_ptr srcinfo,
   jpeg_set_defaults(dstinfo);
   /* jpeg_set_defaults may choose wrong colorspace, eg YCbCr if input is RGB.
    * Fix it to get the right header markers for the image colorspace.
+   * Note: Entropy table assignment in jpeg_set_colorspace depends
+   * on color_transform.
    */
+  dstinfo->color_transform = srcinfo->color_transform;
   jpeg_set_colorspace(dstinfo, srcinfo->jpeg_color_space);
   dstinfo->data_precision = srcinfo->data_precision;
   dstinfo->CCIR601_sampling = srcinfo->CCIR601_sampling;
@@ -130,7 +133,7 @@ jpeg_copy_critical_parameters (j_decompress_ptr srcinfo,
 	  ERREXIT1(dstinfo, JERR_MISMATCHED_QUANT_TABLE, tblno);
       }
     }
-    /* Note: we do not copy the source's Huffman table assignments;
+    /* Note: we do not copy the source's entropy table assignments;
      * instead we rely on jpeg_set_colorspace to have made a suitable choice.
      */
   }
@@ -140,10 +143,10 @@ jpeg_copy_critical_parameters (j_decompress_ptr srcinfo,
    * if the application chooses to copy JFIF 1.02 extension markers from
    * the source file, we need to copy the version to make sure we don't
    * emit a file that has 1.02 extensions but a claimed version of 1.01.
-   * We will *not*, however, copy version info from mislabeled "2.01" files.
    */
   if (srcinfo->saw_JFIF_marker) {
-    if (srcinfo->JFIF_major_version == 1) {
+    if (srcinfo->JFIF_major_version == 1 ||
+	srcinfo->JFIF_major_version == 2) {
       dstinfo->JFIF_major_version = srcinfo->JFIF_major_version;
       dstinfo->JFIF_minor_version = srcinfo->JFIF_minor_version;
     }
@@ -364,7 +367,7 @@ transencode_coef_controller (j_compress_ptr cinfo,
   coef = (my_coef_ptr)
     (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
 				SIZEOF(my_coef_controller));
-  cinfo->coef = (struct jpeg_c_coef_controller *) coef;
+  cinfo->coef = &coef->pub;
   coef->pub.start_pass = start_pass_coef;
   coef->pub.compress_data = compress_output;
 

jdapimin.c

@@ -2,7 +2,7 @@
  * jdapimin.c
  *
  * Copyright (C) 1994-1998, Thomas G. Lane.
- * Modified 2009 by Guido Vollbeding.
+ * Modified 2009-2013 by Guido Vollbeding.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
@@ -114,8 +114,9 @@ jpeg_abort_decompress (j_decompress_ptr cinfo)
 LOCAL(void)
 default_decompress_parms (j_decompress_ptr cinfo)
 {
+  int cid0, cid1, cid2;
+
   /* Guess the input colorspace, and set output colorspace accordingly. */
-  /* (Wish JPEG committee had provided a real way to specify this...) */
   /* Note application may override our guesses. */
   switch (cinfo->num_components) {
   case 1:
@@ -124,9 +125,22 @@ default_decompress_parms (j_decompress_ptr cinfo)
     break;
     
   case 3:
-    if (cinfo->saw_JFIF_marker) {
-      cinfo->jpeg_color_space = JCS_YCbCr; /* JFIF implies YCbCr */
-    } else if (cinfo->saw_Adobe_marker) {
+    cid0 = cinfo->comp_info[0].component_id;
+    cid1 = cinfo->comp_info[1].component_id;
+    cid2 = cinfo->comp_info[2].component_id;
+
+    /* First try to guess from the component IDs */
+    if      (cid0 == 0x01 && cid1 == 0x02 && cid2 == 0x03)
+      cinfo->jpeg_color_space = JCS_YCbCr;
+    else if (cid0 == 0x01 && cid1 == 0x22 && cid2 == 0x23)
+      cinfo->jpeg_color_space = JCS_BG_YCC;
+    else if (cid0 == 0x52 && cid1 == 0x47 && cid2 == 0x42)
+      cinfo->jpeg_color_space = JCS_RGB;	/* ASCII 'R', 'G', 'B' */
+    else if (cid0 == 0x72 && cid1 == 0x67 && cid2 == 0x62)
+      cinfo->jpeg_color_space = JCS_BG_RGB;	/* ASCII 'r', 'g', 'b' */
+    else if (cinfo->saw_JFIF_marker)
+      cinfo->jpeg_color_space = JCS_YCbCr;	/* assume it's YCbCr */
+    else if (cinfo->saw_Adobe_marker) {
       switch (cinfo->Adobe_transform) {
       case 0:
 	cinfo->jpeg_color_space = JCS_RGB;
@@ -140,20 +154,9 @@ default_decompress_parms (j_decompress_ptr cinfo)
 	break;
       }
     } else {
-      /* Saw no special markers, try to guess from the component IDs */
-      int cid0 = cinfo->comp_info[0].component_id;
-      int cid1 = cinfo->comp_info[1].component_id;
-      int cid2 = cinfo->comp_info[2].component_id;
-
-      if (cid0 == 1 && cid1 == 2 && cid2 == 3)
-	cinfo->jpeg_color_space = JCS_YCbCr; /* assume JFIF w/out marker */
-      else if (cid0 == 82 && cid1 == 71 && cid2 == 66)
-	cinfo->jpeg_color_space = JCS_RGB; /* ASCII 'R', 'G', 'B' */
-      else {
       TRACEMS3(cinfo, 1, JTRC_UNKNOWN_IDS, cid0, cid1, cid2);
       cinfo->jpeg_color_space = JCS_YCbCr;	/* assume it's YCbCr */
     }
-    }
     /* Always guess RGB is proper output colorspace. */
     cinfo->out_color_space = JCS_RGB;
     break;

jdapistd.c

@@ -2,6 +2,7 @@
  * jdapistd.c
  *
  * Copyright (C) 1994-1996, Thomas G. Lane.
+ * Modified 2002-2013 by Guido Vollbeding.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *

jdarith.c

@@ -1,7 +1,7 @@
 /*
  * jdarith.c
  *
- * Developed 1997-2011 by Guido Vollbeding.
+ * Developed 1997-2013 by Guido Vollbeding.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
@@ -345,12 +345,15 @@ decode_mcu_AC_first (j_decompress_ptr cinfo, JBLOCKROW *MCU_data)
   /* Sections F.2.4.2 & F.1.4.4.2: Decoding of AC coefficients */
 
   /* Figure F.20: Decode_AC_coefficients */
-  for (k = cinfo->Ss; k <= cinfo->Se; k++) {
-    st = entropy->ac_stats[tbl] + 3 * (k - 1);
+  k = cinfo->Ss - 1;
+  do {
+    st = entropy->ac_stats[tbl] + 3 * k;
     if (arith_decode(cinfo, st)) break;		/* EOB flag */
-    while (arith_decode(cinfo, st + 1) == 0) {
-      st += 3; k++;
-      if (k > cinfo->Se) {
+    for (;;) {
+      k++;
+      if (arith_decode(cinfo, st + 1)) break;
+      st += 3;
+      if (k >= cinfo->Se) {
 	WARNMS(cinfo, JWRN_ARITH_BAD_CODE);
 	entropy->ct = -1;			/* spectral overflow */
 	return TRUE;
@@ -384,7 +387,7 @@ decode_mcu_AC_first (j_decompress_ptr cinfo, JBLOCKROW *MCU_data)
     v += 1; if (sign) v = -v;
     /* Scale and output coefficient in natural (dezigzagged) order */
     (*block)[natural_order[k]] = (JCOEF) (v << cinfo->Al);
-  }
+  } while (k < cinfo->Se);
 
   return TRUE;
 }
@@ -392,6 +395,8 @@ decode_mcu_AC_first (j_decompress_ptr cinfo, JBLOCKROW *MCU_data)
 
 /*
  * MCU decoding for DC successive approximation refinement scan.
+ * Note: we assume such scans can be multi-component,
+ * although the spec is not very clear on the point.
  */
 
 METHODDEF(boolean)
@@ -457,15 +462,18 @@ decode_mcu_AC_refine (j_decompress_ptr cinfo, JBLOCKROW *MCU_data)
   m1 = (-1) << cinfo->Al;	/* -1 in the bit position being coded */
 
   /* Establish EOBx (previous stage end-of-block) index */
-  for (kex = cinfo->Se; kex > 0; kex--)
+  kex = cinfo->Se;
+  do {
     if ((*block)[natural_order[kex]]) break;
+  } while (--kex);
 
-  for (k = cinfo->Ss; k <= cinfo->Se; k++) {
-    st = entropy->ac_stats[tbl] + 3 * (k - 1);
-    if (k > kex)
+  k = cinfo->Ss - 1;
+  do {
+    st = entropy->ac_stats[tbl] + 3 * k;
+    if (k >= kex)
       if (arith_decode(cinfo, st)) break;	/* EOB flag */
     for (;;) {
-      thiscoef = *block + natural_order[k];
+      thiscoef = *block + natural_order[++k];
       if (*thiscoef) {				/* previously nonzero coef */
 	if (arith_decode(cinfo, st + 2)) {
 	  if (*thiscoef < 0)
@@ -482,14 +490,14 @@ decode_mcu_AC_refine (j_decompress_ptr cinfo, JBLOCKROW *MCU_data)
 	  *thiscoef = p1;
 	break;
       }
-      st += 3; k++;
-      if (k > cinfo->Se) {
+      st += 3;
+      if (k >= cinfo->Se) {
 	WARNMS(cinfo, JWRN_ARITH_BAD_CODE);
 	entropy->ct = -1;			/* spectral overflow */
 	return TRUE;
       }
     }
-  }
+  } while (k < cinfo->Se);
 
   return TRUE;
 }
@@ -737,6 +745,17 @@ start_pass (j_decompress_ptr cinfo)
 }
 
 
+/*
+ * Finish up at the end of an arithmetic-compressed scan.
+ */
+
+METHODDEF(void)
+finish_pass (j_decompress_ptr cinfo)
+{
+  /* no work necessary here */
+}
+
+
 /*
  * Module initialization routine for arithmetic entropy decoding.
  */
@@ -750,8 +769,9 @@ jinit_arith_decoder (j_decompress_ptr cinfo)
   entropy = (arith_entropy_ptr)
     (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
 				SIZEOF(arith_entropy_decoder));
-  cinfo->entropy = (struct jpeg_entropy_decoder *) entropy;
+  cinfo->entropy = &entropy->pub;
   entropy->pub.start_pass = start_pass;
+  entropy->pub.finish_pass = finish_pass;
 
   /* Mark tables unallocated */
   for (i = 0; i < NUM_ARITH_TBLS; i++) {

jdatadst.c

@@ -226,6 +226,9 @@ jpeg_stdio_dest (j_compress_ptr cinfo, FILE * outfile)
  * larger memory, so the buffer is available to the application after
  * finishing compression, and then the application is responsible for
  * freeing the requested memory.
+ * Note:  An initial buffer supplied by the caller is expected to be
+ * managed by the application.  The library does not free such buffer
+ * when allocating a larger buffer.
  */
 
 GLOBAL(void)

jdcolor.c

@@ -2,7 +2,7 @@
  * jdcolor.c
  *
  * Copyright (C) 1991-1997, Thomas G. Lane.
- * Modified 2011 by Guido Vollbeding.
+ * Modified 2011-2013 by Guido Vollbeding.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
@@ -19,12 +19,15 @@
 typedef struct {
   struct jpeg_color_deconverter pub; /* public fields */
 
-  /* Private state for YCC->RGB conversion */
+  /* Private state for YCbCr->RGB and BG_YCC->RGB conversion */
   int * Cr_r_tab;		/* => table for Cr to R conversion */
   int * Cb_b_tab;		/* => table for Cb to B conversion */
   INT32 * Cr_g_tab;		/* => table for Cr to G conversion */
   INT32 * Cb_g_tab;		/* => table for Cb to G conversion */
 
+  JSAMPLE * range_limit; /* pointer to normal sample range limit table, */
+		     /* or extended sample range limit table for BG_YCC */
+
   /* Private state for RGB->Y conversion */
   INT32 * rgb_y_tab;		/* => table for RGB to Y conversion */
 } my_color_deconverter;
@@ -32,22 +35,44 @@ typedef struct {
 typedef my_color_deconverter * my_cconvert_ptr;
 
 
-/**************** YCbCr -> RGB conversion: most common case **************/
-/****************   RGB -> Y   conversion: less common case **************/
+/***************  YCbCr -> RGB conversion: most common case **************/
+/*************** BG_YCC -> RGB conversion: less common case **************/
+/***************    RGB -> Y   conversion: less common case **************/
 
 /*
- * YCbCr is defined per CCIR 601-1, except that Cb and Cr are
- * normalized to the range 0..MAXJSAMPLE rather than -0.5 .. 0.5.
- * The conversion equations to be implemented are therefore
+ * YCbCr is defined per Recommendation ITU-R BT.601-7 (03/2011),
+ * previously known as Recommendation CCIR 601-1, except that Cb and Cr
+ * are normalized to the range 0..MAXJSAMPLE rather than -0.5 .. 0.5.
+ * sRGB (standard RGB color space) is defined per IEC 61966-2-1:1999.
+ * sYCC (standard luma-chroma-chroma color space with extended gamut)
+ * is defined per IEC 61966-2-1:1999 Amendment A1:2003 Annex F.
+ * bg-sRGB and bg-sYCC (big gamut standard color spaces)
+ * are defined per IEC 61966-2-1:1999 Amendment A1:2003 Annex G.
+ * Note that the derived conversion coefficients given in some of these
+ * documents are imprecise.  The general conversion equations are
  *
- *	R = Y                + 1.40200 * Cr
- *	G = Y - 0.34414 * Cb - 0.71414 * Cr
- *	B = Y + 1.77200 * Cb
+ *	R = Y + K * (1 - Kr) * Cr
+ *	G = Y - K * (Kb * (1 - Kb) * Cb + Kr * (1 - Kr) * Cr) / (1 - Kr - Kb)
+ *	B = Y + K * (1 - Kb) * Cb
  *
- *	Y = 0.29900 * R + 0.58700 * G + 0.11400 * B
+ *	Y = Kr * R + (1 - Kr - Kb) * G + Kb * B
+ *
+ * With Kr = 0.299 and Kb = 0.114 (derived according to SMPTE RP 177-1993
+ * from the 1953 FCC NTSC primaries and CIE Illuminant C), K = 2 for sYCC,
+ * the conversion equations to be implemented are therefore
+ *
+ *	R = Y + 1.402 * Cr
+ *	G = Y - 0.344136286 * Cb - 0.714136286 * Cr
+ *	B = Y + 1.772 * Cb
+ *
+ *	Y = 0.299 * R + 0.587 * G + 0.114 * B
  *
  * where Cb and Cr represent the incoming values less CENTERJSAMPLE.
- * (These numbers are derived from TIFF 6.0 section 21, dated 3-June-92.)
+ * For bg-sYCC, with K = 4, the equations are
+ *
+ *	R = Y + 2.804 * Cr
+ *	G = Y - 0.688272572 * Cb - 1.428272572 * Cr
+ *	B = Y + 3.544 * Cb
  *
  * To avoid floating-point arithmetic, we represent the fractional constants
  * as integers scaled up by 2^16 (about 4 digits precision); we have to divide
@@ -58,9 +83,9 @@ typedef my_color_deconverter * my_cconvert_ptr;
  * For even more speed, we avoid doing any multiplications in the inner loop
  * by precalculating the constants times Cb and Cr for all possible values.
  * For 8-bit JSAMPLEs this is very reasonable (only 256 entries per table);
- * for 12-bit samples it is still acceptable.  It's not very reasonable for
- * 16-bit samples, but if you want lossless storage you shouldn't be changing
- * colorspace anyway.
+ * for 9-bit to 12-bit samples it is still acceptable.  It's not very
+ * reasonable for 16-bit samples, but if you want lossless storage you
+ * shouldn't be changing colorspace anyway.
  * The Cr=>R and Cb=>B values can be rounded to integers in advance; the
  * values for the G calculation are left scaled up, since we must add them
  * together before rounding.
@@ -84,11 +109,12 @@ typedef my_color_deconverter * my_cconvert_ptr;
 
 
 /*
- * Initialize tables for YCC->RGB colorspace conversion.
+ * Initialize tables for YCbCr->RGB and BG_YCC->RGB colorspace conversion.
  */
 
 LOCAL(void)
 build_ycc_rgb_table (j_decompress_ptr cinfo)
+/* Normal case, sYCC */
 {
   my_cconvert_ptr cconvert = (my_cconvert_ptr) cinfo->cconvert;
   int i;
@@ -108,24 +134,84 @@ build_ycc_rgb_table (j_decompress_ptr cinfo)
     (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
 				(MAXJSAMPLE+1) * SIZEOF(INT32));
 
+  cconvert->range_limit = cinfo->sample_range_limit;
+
   for (i = 0, x = -CENTERJSAMPLE; i <= MAXJSAMPLE; i++, x++) {
     /* i is the actual input pixel value, in the range 0..MAXJSAMPLE */
     /* The Cb or Cr value we are thinking of is x = i - CENTERJSAMPLE */
-    /* Cr=>R value is nearest int to 1.40200 * x */
+    /* Cr=>R value is nearest int to 1.402 * x */
     cconvert->Cr_r_tab[i] = (int)
-		    RIGHT_SHIFT(FIX(1.40200) * x + ONE_HALF, SCALEBITS);
-    /* Cb=>B value is nearest int to 1.77200 * x */
+		    RIGHT_SHIFT(FIX(1.402) * x + ONE_HALF, SCALEBITS);
+    /* Cb=>B value is nearest int to 1.772 * x */
     cconvert->Cb_b_tab[i] = (int)
-		    RIGHT_SHIFT(FIX(1.77200) * x + ONE_HALF, SCALEBITS);
-    /* Cr=>G value is scaled-up -0.71414 * x */
-    cconvert->Cr_g_tab[i] = (- FIX(0.71414)) * x;
-    /* Cb=>G value is scaled-up -0.34414 * x */
+		    RIGHT_SHIFT(FIX(1.772) * x + ONE_HALF, SCALEBITS);
+    /* Cr=>G value is scaled-up -0.714136286 * x */
+    cconvert->Cr_g_tab[i] = (- FIX(0.714136286)) * x;
+    /* Cb=>G value is scaled-up -0.344136286 * x */
     /* We also add in ONE_HALF so that need not do it in inner loop */
-    cconvert->Cb_g_tab[i] = (- FIX(0.34414)) * x + ONE_HALF;
+    cconvert->Cb_g_tab[i] = (- FIX(0.344136286)) * x + ONE_HALF;
   }
 }
 
 
+LOCAL(void)
+build_bg_ycc_rgb_table (j_decompress_ptr cinfo)
+/* Wide gamut case, bg-sYCC */
+{
+  my_cconvert_ptr cconvert = (my_cconvert_ptr) cinfo->cconvert;
+  int i;
+  INT32 x;
+  SHIFT_TEMPS
+
+  cconvert->Cr_r_tab = (int *)
+    (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
+				(MAXJSAMPLE+1) * SIZEOF(int));
+  cconvert->Cb_b_tab = (int *)
+    (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
+				(MAXJSAMPLE+1) * SIZEOF(int));
+  cconvert->Cr_g_tab = (INT32 *)
+    (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
+				(MAXJSAMPLE+1) * SIZEOF(INT32));
+  cconvert->Cb_g_tab = (INT32 *)
+    (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
+				(MAXJSAMPLE+1) * SIZEOF(INT32));
+
+  cconvert->range_limit = (JSAMPLE *)
+    (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
+				5 * (MAXJSAMPLE+1) * SIZEOF(JSAMPLE));
+
+  for (i = 0, x = -CENTERJSAMPLE; i <= MAXJSAMPLE; i++, x++) {
+    /* i is the actual input pixel value, in the range 0..MAXJSAMPLE */
+    /* The Cb or Cr value we are thinking of is x = i - CENTERJSAMPLE */
+    /* Cr=>R value is nearest int to 2.804 * x */
+    cconvert->Cr_r_tab[i] = (int)
+		    RIGHT_SHIFT(FIX(2.804) * x + ONE_HALF, SCALEBITS);
+    /* Cb=>B value is nearest int to 3.544 * x */
+    cconvert->Cb_b_tab[i] = (int)
+		    RIGHT_SHIFT(FIX(3.544) * x + ONE_HALF, SCALEBITS);
+    /* Cr=>G value is scaled-up -1.428272572 * x */
+    cconvert->Cr_g_tab[i] = (- FIX(1.428272572)) * x;
+    /* Cb=>G value is scaled-up -0.688272572 * x */
+    /* We also add in ONE_HALF so that need not do it in inner loop */
+    cconvert->Cb_g_tab[i] = (- FIX(0.688272572)) * x + ONE_HALF;
+  }
+
+  /* Cb and Cr portions can extend to double range in wide gamut case,
+   * so we prepare an appropriate extended range limit table.
+   */
+
+  /* First segment of range limit table: limit[x] = 0 for x < 0 */
+  MEMZERO(cconvert->range_limit, 2 * (MAXJSAMPLE+1) * SIZEOF(JSAMPLE));
+  cconvert->range_limit += 2 * (MAXJSAMPLE+1);
+  /* Main part of range limit table: limit[x] = x */
+  for (i = 0; i <= MAXJSAMPLE; i++)
+    cconvert->range_limit[i] = (JSAMPLE) i;
+  /* End of range limit table: limit[x] = MAXJSAMPLE for x > MAXJSAMPLE */
+  for (; i < 3 * (MAXJSAMPLE+1); i++)
+    cconvert->range_limit[i] = MAXJSAMPLE;
+}
+
+
 /*
  * Convert some rows of samples to the output colorspace.
  *
@@ -149,7 +235,7 @@ ycc_rgb_convert (j_decompress_ptr cinfo,
   register JDIMENSION col;
   JDIMENSION num_cols = cinfo->output_width;
   /* copy these pointers into registers if possible */
-  register JSAMPLE * range_limit = cinfo->sample_range_limit;
+  register JSAMPLE * range_limit = cconvert->range_limit;
   register int * Crrtab = cconvert->Cr_r_tab;
   register int * Cbbtab = cconvert->Cb_b_tab;
   register INT32 * Crgtab = cconvert->Cr_g_tab;
@@ -166,7 +252,9 @@ ycc_rgb_convert (j_decompress_ptr cinfo,
       y  = GETJSAMPLE(inptr0[col]);
       cb = GETJSAMPLE(inptr1[col]);
       cr = GETJSAMPLE(inptr2[col]);
-      /* Range-limiting is essential due to noise introduced by DCT losses. */
+      /* Range-limiting is essential due to noise introduced by DCT losses,
+       * for extended gamut (sYCC) and wide gamut (bg-sYCC) encodings.
+       */
       outptr[RGB_RED]   = range_limit[y + Crrtab[cr]];
       outptr[RGB_GREEN] = range_limit[y +
 			      ((int) RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr],
@@ -178,7 +266,7 @@ ycc_rgb_convert (j_decompress_ptr cinfo,
 }
 
 
-/**************** Cases other than YCbCr -> RGB **************/
+/**************** Cases other than YCC -> RGB ****************/
 
 
 /*
@@ -198,9 +286,9 @@ build_rgb_y_table (j_decompress_ptr cinfo)
 				(TABLE_SIZE * SIZEOF(INT32)));
 
   for (i = 0; i <= MAXJSAMPLE; i++) {
-    rgb_y_tab[i+R_Y_OFF] = FIX(0.29900) * i;
-    rgb_y_tab[i+G_Y_OFF] = FIX(0.58700) * i;
-    rgb_y_tab[i+B_Y_OFF] = FIX(0.11400) * i + ONE_HALF;
+    rgb_y_tab[i+R_Y_OFF] = FIX(0.299) * i;
+    rgb_y_tab[i+G_Y_OFF] = FIX(0.587) * i;
+    rgb_y_tab[i+B_Y_OFF] = FIX(0.114) * i + ONE_HALF;
   }
 }
 
@@ -215,8 +303,8 @@ rgb_gray_convert (j_decompress_ptr cinfo,
 		  JSAMPARRAY output_buf, int num_rows)
 {
   my_cconvert_ptr cconvert = (my_cconvert_ptr) cinfo->cconvert;
-  register int r, g, b;
   register INT32 * ctab = cconvert->rgb_y_tab;
+  register int r, g, b;
   register JSAMPROW outptr;
   register JSAMPROW inptr0, inptr1, inptr2;
   register JDIMENSION col;
@@ -241,6 +329,89 @@ rgb_gray_convert (j_decompress_ptr cinfo,
 }
 
 
+/*
+ * [R-G,G,B-G] to [R,G,B] conversion with modulo calculation
+ * (inverse color transform).
+ * This can be seen as an adaption of the general YCbCr->RGB
+ * conversion equation with Kr = Kb = 0, while replacing the
+ * normalization by modulo calculation.
+ */
+
+METHODDEF(void)
+rgb1_rgb_convert (j_decompress_ptr cinfo,
+		  JSAMPIMAGE input_buf, JDIMENSION input_row,
+		  JSAMPARRAY output_buf, int num_rows)
+{
+  register int r, g, b;
+  register JSAMPROW outptr;
+  register JSAMPROW inptr0, inptr1, inptr2;
+  register JDIMENSION col;
+  JDIMENSION num_cols = cinfo->output_width;
+
+  while (--num_rows >= 0) {
+    inptr0 = input_buf[0][input_row];
+    inptr1 = input_buf[1][input_row];
+    inptr2 = input_buf[2][input_row];
+    input_row++;
+    outptr = *output_buf++;
+    for (col = 0; col < num_cols; col++) {
+      r = GETJSAMPLE(inptr0[col]);
+      g = GETJSAMPLE(inptr1[col]);
+      b = GETJSAMPLE(inptr2[col]);
+      /* Assume that MAXJSAMPLE+1 is a power of 2, so that the MOD
+       * (modulo) operator is equivalent to the bitmask operator AND.
+       */
+      outptr[RGB_RED]   = (JSAMPLE) ((r + g - CENTERJSAMPLE) & MAXJSAMPLE);
+      outptr[RGB_GREEN] = (JSAMPLE) g;
+      outptr[RGB_BLUE]  = (JSAMPLE) ((b + g - CENTERJSAMPLE) & MAXJSAMPLE);
+      outptr += RGB_PIXELSIZE;
+    }
+  }
+}
+
+
+/*
+ * [R-G,G,B-G] to grayscale conversion with modulo calculation
+ * (inverse color transform).
+ */
+
+METHODDEF(void)
+rgb1_gray_convert (j_decompress_ptr cinfo,
+		   JSAMPIMAGE input_buf, JDIMENSION input_row,
+		   JSAMPARRAY output_buf, int num_rows)
+{
+  my_cconvert_ptr cconvert = (my_cconvert_ptr) cinfo->cconvert;
+  register INT32 * ctab = cconvert->rgb_y_tab;
+  register int r, g, b;
+  register JSAMPROW outptr;
+  register JSAMPROW inptr0, inptr1, inptr2;
+  register JDIMENSION col;
+  JDIMENSION num_cols = cinfo->output_width;
+
+  while (--num_rows >= 0) {
+    inptr0 = input_buf[0][input_row];
+    inptr1 = input_buf[1][input_row];
+    inptr2 = input_buf[2][input_row];
+    input_row++;
+    outptr = *output_buf++;
+    for (col = 0; col < num_cols; col++) {
+      r = GETJSAMPLE(inptr0[col]);
+      g = GETJSAMPLE(inptr1[col]);
+      b = GETJSAMPLE(inptr2[col]);
+      /* Assume that MAXJSAMPLE+1 is a power of 2, so that the MOD
+       * (modulo) operator is equivalent to the bitmask operator AND.
+       */
+      r = (r + g - CENTERJSAMPLE) & MAXJSAMPLE;
+      b = (b + g - CENTERJSAMPLE) & MAXJSAMPLE;
+      /* Y */
+      outptr[col] = (JSAMPLE)
+		((ctab[r+R_Y_OFF] + ctab[g+G_Y_OFF] + ctab[b+B_Y_OFF])
+		 >> SCALEBITS);
+    }
+  }
+}
+
+
 /*
  * No colorspace change, but conversion from separate-planes
  * to interleaved representation.
@@ -283,19 +454,20 @@ null_convert (j_decompress_ptr cinfo,
 	      JSAMPIMAGE input_buf, JDIMENSION input_row,
 	      JSAMPARRAY output_buf, int num_rows)
 {
-  register JSAMPROW inptr, outptr;
-  register JDIMENSION count;
-  register int num_components = cinfo->num_components;
-  JDIMENSION num_cols = cinfo->output_width;
   int ci;
+  register int nc = cinfo->num_components;
+  register JSAMPROW outptr;
+  register JSAMPROW inptr;
+  register JDIMENSION col;
+  JDIMENSION num_cols = cinfo->output_width;
 
   while (--num_rows >= 0) {
-    for (ci = 0; ci < num_components; ci++) {
+    for (ci = 0; ci < nc; ci++) {
       inptr = input_buf[ci][input_row];
       outptr = output_buf[0] + ci;
-      for (count = num_cols; count > 0; count--) {
+      for (col = 0; col < num_cols; col++) {
 	*outptr = *inptr++;	/* needn't bother with GETJSAMPLE() here */
-	outptr += num_components;
+	outptr += nc;
       }
     }
     input_row++;
@@ -306,7 +478,7 @@ null_convert (j_decompress_ptr cinfo,
 
 /*
  * Color conversion for grayscale: just copy the data.
- * This also works for YCbCr -> grayscale conversion, in which
+ * This also works for YCC -> grayscale conversion, in which
  * we just copy the Y (luminance) component and ignore chrominance.
  */
 
@@ -331,7 +503,8 @@ gray_rgb_convert (j_decompress_ptr cinfo,
 		  JSAMPIMAGE input_buf, JDIMENSION input_row,
 		  JSAMPARRAY output_buf, int num_rows)
 {
-  register JSAMPROW inptr, outptr;
+  register JSAMPROW outptr;
+  register JSAMPROW inptr;
   register JDIMENSION col;
   JDIMENSION num_cols = cinfo->output_width;
 
@@ -384,7 +557,9 @@ ycck_cmyk_convert (j_decompress_ptr cinfo,
       y  = GETJSAMPLE(inptr0[col]);
       cb = GETJSAMPLE(inptr1[col]);
       cr = GETJSAMPLE(inptr2[col]);
-      /* Range-limiting is essential due to noise introduced by DCT losses. */
+      /* Range-limiting is essential due to noise introduced by DCT losses,
+       * and for extended gamut encodings (sYCC).
+       */
       outptr[0] = range_limit[MAXJSAMPLE - (y + Crrtab[cr])];	/* red */
       outptr[1] = range_limit[MAXJSAMPLE - (y +			/* green */
 			      ((int) RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr],
@@ -422,7 +597,7 @@ jinit_color_deconverter (j_decompress_ptr cinfo)
   cconvert = (my_cconvert_ptr)
     (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
 				SIZEOF(my_color_deconverter));
-  cinfo->cconvert = (struct jpeg_color_deconverter *) cconvert;
+  cinfo->cconvert = &cconvert->pub;
   cconvert->pub.start_pass = start_pass_dcolor;
 
   /* Make sure num_components agrees with jpeg_color_space */
@@ -434,6 +609,8 @@ jinit_color_deconverter (j_decompress_ptr cinfo)
 
   case JCS_RGB:
   case JCS_YCbCr:
+  case JCS_BG_RGB:
+  case JCS_BG_YCC:
     if (cinfo->num_components != 3)
       ERREXIT(cinfo, JERR_BAD_J_COLORSPACE);
     break;
@@ -450,6 +627,12 @@ jinit_color_deconverter (j_decompress_ptr cinfo)
     break;
   }
 
+  /* Support color transform only for RGB colorspaces */
+  if (cinfo->color_transform &&
+      cinfo->jpeg_color_space != JCS_RGB &&
+      cinfo->jpeg_color_space != JCS_BG_RGB)
+    ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL);
+
   /* Set out_color_components and conversion method based on requested space.
    * Also clear the component_needed flags for any unused components,
    * so that earlier pipeline stages can avoid useless computation.
@@ -458,41 +641,94 @@ jinit_color_deconverter (j_decompress_ptr cinfo)
   switch (cinfo->out_color_space) {
   case JCS_GRAYSCALE:
     cinfo->out_color_components = 1;
-    if (cinfo->jpeg_color_space == JCS_GRAYSCALE ||
-	cinfo->jpeg_color_space == JCS_YCbCr) {
+    switch (cinfo->jpeg_color_space) {
+    case JCS_GRAYSCALE:
+    case JCS_YCbCr:
+    case JCS_BG_YCC:
       cconvert->pub.color_convert = grayscale_convert;
       /* For color->grayscale conversion, only the Y (0) component is needed */
       for (ci = 1; ci < cinfo->num_components; ci++)
 	cinfo->comp_info[ci].component_needed = FALSE;
-    } else if (cinfo->jpeg_color_space == JCS_RGB) {
+      break;
+    case JCS_RGB:
+      switch (cinfo->color_transform) {
+      case JCT_NONE:
 	cconvert->pub.color_convert = rgb_gray_convert;
-      build_rgb_y_table(cinfo);
-    } else
+	break;
+      case JCT_SUBTRACT_GREEN:
+	cconvert->pub.color_convert = rgb1_gray_convert;
+	break;
+      default:
 	ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL);
+      }
+      build_rgb_y_table(cinfo);
+      break;
+    default:
+      ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL);
+    }
     break;
 
   case JCS_RGB:
     cinfo->out_color_components = RGB_PIXELSIZE;
-    if (cinfo->jpeg_color_space == JCS_YCbCr) {
+    switch (cinfo->jpeg_color_space) {
+    case JCS_GRAYSCALE:
+      cconvert->pub.color_convert = gray_rgb_convert;
+      break;
+    case JCS_YCbCr:
       cconvert->pub.color_convert = ycc_rgb_convert;
       build_ycc_rgb_table(cinfo);
-    } else if (cinfo->jpeg_color_space == JCS_GRAYSCALE) {
-      cconvert->pub.color_convert = gray_rgb_convert;
-    } else if (cinfo->jpeg_color_space == JCS_RGB) {
+      break;
+    case JCS_BG_YCC:
+      cconvert->pub.color_convert = ycc_rgb_convert;
+      build_bg_ycc_rgb_table(cinfo);
+      break;
+    case JCS_RGB:
+      switch (cinfo->color_transform) {
+      case JCT_NONE:
 	cconvert->pub.color_convert = rgb_convert;
+	break;
+      case JCT_SUBTRACT_GREEN:
+	cconvert->pub.color_convert = rgb1_rgb_convert;
+	break;
+      default:
+	ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL);
+      }
+      break;
+    default:
+      ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL);
+    }
+    break;
+
+  case JCS_BG_RGB:
+    cinfo->out_color_components = RGB_PIXELSIZE;
+    if (cinfo->jpeg_color_space == JCS_BG_RGB) {
+      switch (cinfo->color_transform) {
+      case JCT_NONE:
+	cconvert->pub.color_convert = rgb_convert;
+	break;
+      case JCT_SUBTRACT_GREEN:
+	cconvert->pub.color_convert = rgb1_rgb_convert;
+	break;
+      default:
+	ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL);
+      }
     } else
       ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL);
     break;
 
   case JCS_CMYK:
     cinfo->out_color_components = 4;
-    if (cinfo->jpeg_color_space == JCS_YCCK) {
+    switch (cinfo->jpeg_color_space) {
+    case JCS_YCCK:
       cconvert->pub.color_convert = ycck_cmyk_convert;
       build_ycc_rgb_table(cinfo);
-    } else if (cinfo->jpeg_color_space == JCS_CMYK) {
+      break;
+    case JCS_CMYK:
       cconvert->pub.color_convert = null_convert;
-    } else
+      break;
+    default:
       ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL);
+    }
     break;
 
   default:

jddctmgr.c

@@ -2,7 +2,7 @@
  * jddctmgr.c
  *
  * Copyright (C) 1994-1996, Thomas G. Lane.
- * Modified 2002-2010 by Guido Vollbeding.
+ * Modified 2002-2013 by Guido Vollbeding.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
@@ -368,7 +368,7 @@ jinit_inverse_dct (j_decompress_ptr cinfo)
   idct = (my_idct_ptr)
     (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
 				SIZEOF(my_idct_controller));
-  cinfo->idct = (struct jpeg_inverse_dct *) idct;
+  cinfo->idct = &idct->pub;
   idct->pub.start_pass = start_pass;
 
   for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;

jdhuff.c

@@ -2,7 +2,7 @@
  * jdhuff.c
  *
  * Copyright (C) 1991-1997, Thomas G. Lane.
- * Modified 2006-2009 by Guido Vollbeding.
+ * Modified 2006-2013 by Guido Vollbeding.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
@@ -627,6 +627,22 @@ jpeg_huff_decode (bitread_working_state * state,
 }
 
 
+/*
+ * Finish up at the end of a Huffman-compressed scan.
+ */
+
+METHODDEF(void)
+finish_pass_huff (j_decompress_ptr cinfo)
+{
+  huff_entropy_ptr entropy = (huff_entropy_ptr) cinfo->entropy;
+
+  /* Throw away any unused bits remaining in bit buffer; */
+  /* include any full bytes in next_marker's count of discarded bytes */
+  cinfo->marker->discarded_bytes += entropy->bitstate.bits_left / 8;
+  entropy->bitstate.bits_left = 0;
+}
+
+
 /*
  * Check for a restart marker & resynchronize decoder.
  * Returns FALSE if must suspend.
@@ -638,10 +654,7 @@ process_restart (j_decompress_ptr cinfo)
   huff_entropy_ptr entropy = (huff_entropy_ptr) cinfo->entropy;
   int ci;
 
-  /* Throw away any unused bits remaining in bit buffer; */
-  /* include any full bytes in next_marker's count of discarded bytes */
-  cinfo->marker->discarded_bytes += entropy->bitstate.bits_left / 8;
-  entropy->bitstate.bits_left = 0;
+  finish_pass_huff(cinfo);
 
   /* Advance past the RSTn marker */
   if (! (*cinfo->marker->read_restart_marker) (cinfo))
@@ -797,7 +810,7 @@ decode_mcu_AC_first (j_decompress_ptr cinfo, JBLOCKROW *MCU_data)
 
     /* There is always only one block per MCU */
 
-    if (EOBRUN > 0)		/* if it's a band of zeroes... */
+    if (EOBRUN)			/* if it's a band of zeroes... */
       EOBRUN--;			/* ...process it now (we do nothing) */
     else {
       BITREAD_LOAD_STATE(cinfo,entropy->bitstate);
@@ -816,18 +829,17 @@ decode_mcu_AC_first (j_decompress_ptr cinfo, JBLOCKROW *MCU_data)
 	  /* Scale and output coefficient in natural (dezigzagged) order */
 	  (*block)[natural_order[k]] = (JCOEF) (s << Al);
 	} else {
-	  if (r == 15) {	/* ZRL */
-	    k += 15;		/* skip 15 zeroes in band */
-	  } else {		/* EOBr, run length is 2^r + appended bits */
-	    EOBRUN = 1 << r;
+	  if (r != 15) {	/* EOBr, run length is 2^r + appended bits */
 	    if (r) {		/* EOBr, r > 0 */
+	      EOBRUN = 1 << r;
 	      CHECK_BIT_BUFFER(br_state, r, return FALSE);
 	      r = GET_BITS(r);
 	      EOBRUN += r;
-	    }
 	      EOBRUN--;		/* this band is processed at this moment */
+	    }
 	    break;		/* force end-of-band */
 	  }
+	  k += 15;		/* ZRL: skip 15 zeroes in band */
 	}
       }
 
@@ -847,17 +859,15 @@ decode_mcu_AC_first (j_decompress_ptr cinfo, JBLOCKROW *MCU_data)
 
 /*
  * MCU decoding for DC successive approximation refinement scan.
- * Note: we assume such scans can be multi-component, although the spec
- * is not very clear on the point.
+ * Note: we assume such scans can be multi-component,
+ * although the spec is not very clear on the point.
  */
 
 METHODDEF(boolean)
 decode_mcu_DC_refine (j_decompress_ptr cinfo, JBLOCKROW *MCU_data)
 {   
   huff_entropy_ptr entropy = (huff_entropy_ptr) cinfo->entropy;
-  int p1 = 1 << cinfo->Al;	/* 1 in the bit position being coded */
-  int blkn;
-  JBLOCKROW block;
+  int p1, blkn;
   BITREAD_STATE_VARS;
 
   /* Process restart marker if needed; may have to suspend */
@@ -874,15 +884,15 @@ decode_mcu_DC_refine (j_decompress_ptr cinfo, JBLOCKROW *MCU_data)
   /* Load up working state */
   BITREAD_LOAD_STATE(cinfo,entropy->bitstate);
 
+  p1 = 1 << cinfo->Al;		/* 1 in the bit position being coded */
+
   /* Outer loop handles each block in the MCU */
 
   for (blkn = 0; blkn < cinfo->blocks_in_MCU; blkn++) {
-    block = MCU_data[blkn];
-
     /* Encoded data is simply the next bit of the two's-complement DC value */
     CHECK_BIT_BUFFER(br_state, 1, return FALSE);
     if (GET_BITS(1))
-      (*block)[0] |= p1;
+      MCU_data[blkn][0][0] |= p1;
     /* Note: since we use |=, repeating the assignment later is safe */
   }
 
@@ -951,7 +961,7 @@ decode_mcu_AC_refine (j_decompress_ptr cinfo, JBLOCKROW *MCU_data)
     k = cinfo->Ss;
 
     if (EOBRUN == 0) {
-      for (; k <= Se; k++) {
+      do {
 	HUFF_DECODE(s, br_state, tbl, goto undoit, label3);
 	r = s >> 4;
 	s &= 15;
@@ -981,7 +991,7 @@ decode_mcu_AC_refine (j_decompress_ptr cinfo, JBLOCKROW *MCU_data)
 	 */
 	do {
 	  thiscoef = *block + natural_order[k];
-	  if (*thiscoef != 0) {
+	  if (*thiscoef) {
 	    CHECK_BIT_BUFFER(br_state, 1, goto undoit);
 	    if (GET_BITS(1)) {
 	      if ((*thiscoef & p1) == 0) { /* do nothing if already set it */
@@ -1004,18 +1014,19 @@ decode_mcu_AC_refine (j_decompress_ptr cinfo, JBLOCKROW *MCU_data)
 	  /* Remember its position in case we have to suspend */
 	  newnz_pos[num_newnz++] = pos;
 	}
-      }
+	k++;
+      } while (k <= Se);
     }
 
-    if (EOBRUN > 0) {
+    if (EOBRUN) {
       /* Scan any remaining coefficient positions after the end-of-band
        * (the last newly nonzero coefficient, if any).  Append a correction
        * bit to each already-nonzero coefficient.  A correction bit is 1
        * if the absolute value of the coefficient must be increased.
        */
-      for (; k <= Se; k++) {
+      do {
 	thiscoef = *block + natural_order[k];
-	if (*thiscoef != 0) {
+	if (*thiscoef) {
 	  CHECK_BIT_BUFFER(br_state, 1, goto undoit);
 	  if (GET_BITS(1)) {
 	    if ((*thiscoef & p1) == 0) { /* do nothing if already changed it */
@@ -1026,7 +1037,8 @@ decode_mcu_AC_refine (j_decompress_ptr cinfo, JBLOCKROW *MCU_data)
 	    }
 	  }
 	}
-      }
+	k++;
+      } while (k <= Se);
       /* Count one block completed in EOB run */
       EOBRUN--;
     }
@@ -1043,7 +1055,7 @@ decode_mcu_AC_refine (j_decompress_ptr cinfo, JBLOCKROW *MCU_data)
 
 undoit:
   /* Re-zero any output coefficients that we made newly nonzero */
-  while (num_newnz > 0)
+  while (num_newnz)
     (*block)[newnz_pos[--num_newnz]] = 0;
 
   return FALSE;
@@ -1514,8 +1526,9 @@ jinit_huff_decoder (j_decompress_ptr cinfo)
   entropy = (huff_entropy_ptr)
     (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
 				SIZEOF(huff_entropy_decoder));
-  cinfo->entropy = (struct jpeg_entropy_decoder *) entropy;
+  cinfo->entropy = &entropy->pub;
   entropy->pub.start_pass = start_pass_huff_decoder;
+  entropy->pub.finish_pass = finish_pass_huff;
 
   if (cinfo->progressive_mode) {
     /* Create progression status table */

jdinput.c

@@ -2,7 +2,7 @@
  * jdinput.c
  *
  * Copyright (C) 1991-1997, Thomas G. Lane.
- * Modified 2002-2009 by Guido Vollbeding.
+ * Modified 2002-2013 by Guido Vollbeding.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
@@ -196,7 +196,7 @@ jpeg_core_output_dimensions (j_decompress_ptr cinfo)
   /* Hardwire it to "no scaling" */
   cinfo->output_width = cinfo->image_width;
   cinfo->output_height = cinfo->image_height;
-  /* jdinput.c has already initialized DCT_scaled_size,
+  /* initial_setup has already initialized DCT_scaled_size,
    * and has computed unscaled downsampled_width and downsampled_height.
    */
 
@@ -216,8 +216,8 @@ initial_setup (j_decompress_ptr cinfo)
       (long) cinfo->image_width > (long) JPEG_MAX_DIMENSION)
     ERREXIT1(cinfo, JERR_IMAGE_TOO_BIG, (unsigned int) JPEG_MAX_DIMENSION);
 
-  /* For now, precision must match compiled-in value... */
-  if (cinfo->data_precision != BITS_IN_JSAMPLE)
+  /* Only 8 to 12 bits data precision are supported for DCT based JPEG */
+  if (cinfo->data_precision < 8 || cinfo->data_precision > 12)
     ERREXIT1(cinfo, JERR_BAD_PRECISION, cinfo->data_precision);
 
   /* Check that number of components won't exceed internal array sizes */
@@ -537,6 +537,7 @@ start_input_pass (j_decompress_ptr cinfo)
 METHODDEF(void)
 finish_input_pass (j_decompress_ptr cinfo)
 {
+  (*cinfo->entropy->finish_pass) (cinfo);
   cinfo->inputctl->consume_input = consume_markers;
 }
 
@@ -646,7 +647,7 @@ jinit_input_controller (j_decompress_ptr cinfo)
   inputctl = (my_inputctl_ptr)
     (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT,
 				SIZEOF(my_input_controller));
-  cinfo->inputctl = (struct jpeg_input_controller *) inputctl;
+  cinfo->inputctl = &inputctl->pub;
   /* Initialize method pointers */
   inputctl->pub.consume_input = consume_markers;
   inputctl->pub.reset_input_controller = reset_input_controller;

jdmainct.c

@@ -2,6 +2,7 @@
  * jdmainct.c
  *
  * Copyright (C) 1994-1996, Thomas G. Lane.
+ * Modified 2002-2012 by Guido Vollbeding.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
@@ -159,7 +160,7 @@ alloc_funny_pointers (j_decompress_ptr cinfo)
  * This is done only once, not once per pass.
  */
 {
-  my_main_ptr main = (my_main_ptr) cinfo->main;
+  my_main_ptr mainp = (my_main_ptr) cinfo->main;
   int ci, rgroup;
   int M = cinfo->min_DCT_v_scaled_size;
   jpeg_component_info *compptr;
@@ -168,10 +169,10 @@ alloc_funny_pointers (j_decompress_ptr cinfo)
   /* Get top-level space for component array pointers.
    * We alloc both arrays with one call to save a few cycles.
    */
-  main->xbuffer[0] = (JSAMPIMAGE)
+  mainp->xbuffer[0] = (JSAMPIMAGE)
     (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
 				cinfo->num_components * 2 * SIZEOF(JSAMPARRAY));
-  main->xbuffer[1] = main->xbuffer[0] + cinfo->num_components;
+  mainp->xbuffer[1] = mainp->xbuffer[0] + cinfo->num_components;
 
   for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
        ci++, compptr++) {
@@ -184,9 +185,9 @@ alloc_funny_pointers (j_decompress_ptr cinfo)
       (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
 				  2 * (rgroup * (M + 4)) * SIZEOF(JSAMPROW));
     xbuf += rgroup;		/* want one row group at negative offsets */
-    main->xbuffer[0][ci] = xbuf;
+    mainp->xbuffer[0][ci] = xbuf;
     xbuf += rgroup * (M + 4);
-    main->xbuffer[1][ci] = xbuf;
+    mainp->xbuffer[1][ci] = xbuf;
   }
 }
 
@@ -200,7 +201,7 @@ make_funny_pointers (j_decompress_ptr cinfo)
  * This will be repeated at the beginning of each pass.
  */
 {
-  my_main_ptr main = (my_main_ptr) cinfo->main;
+  my_main_ptr mainp = (my_main_ptr) cinfo->main;
   int ci, i, rgroup;
   int M = cinfo->min_DCT_v_scaled_size;
   jpeg_component_info *compptr;
@@ -210,10 +211,10 @@ make_funny_pointers (j_decompress_ptr cinfo)
        ci++, compptr++) {
     rgroup = (compptr->v_samp_factor * compptr->DCT_v_scaled_size) /
       cinfo->min_DCT_v_scaled_size; /* height of a row group of component */
-    xbuf0 = main->xbuffer[0][ci];
-    xbuf1 = main->xbuffer[1][ci];
+    xbuf0 = mainp->xbuffer[0][ci];
+    xbuf1 = mainp->xbuffer[1][ci];
     /* First copy the workspace pointers as-is */
-    buf = main->buffer[ci];
+    buf = mainp->buffer[ci];
     for (i = 0; i < rgroup * (M + 2); i++) {
       xbuf0[i] = xbuf1[i] = buf[i];
     }
@@ -240,7 +241,7 @@ set_wraparound_pointers (j_decompress_ptr cinfo)
  * This changes the pointer list state from top-of-image to the normal state.
  */
 {
-  my_main_ptr main = (my_main_ptr) cinfo->main;
+  my_main_ptr mainp = (my_main_ptr) cinfo->main;
   int ci, i, rgroup;
   int M = cinfo->min_DCT_v_scaled_size;
   jpeg_component_info *compptr;
@@ -250,8 +251,8 @@ set_wraparound_pointers (j_decompress_ptr cinfo)
        ci++, compptr++) {
     rgroup = (compptr->v_samp_factor * compptr->DCT_v_scaled_size) /
       cinfo->min_DCT_v_scaled_size; /* height of a row group of component */
-    xbuf0 = main->xbuffer[0][ci];
-    xbuf1 = main->xbuffer[1][ci];
+    xbuf0 = mainp->xbuffer[0][ci];
+    xbuf1 = mainp->xbuffer[1][ci];
     for (i = 0; i < rgroup; i++) {
       xbuf0[i - rgroup] = xbuf0[rgroup*(M+1) + i];
       xbuf1[i - rgroup] = xbuf1[rgroup*(M+1) + i];
@@ -269,7 +270,7 @@ set_bottom_pointers (j_decompress_ptr cinfo)
  * Also sets rowgroups_avail to indicate number of nondummy row groups in row.
  */
 {
-  my_main_ptr main = (my_main_ptr) cinfo->main;
+  my_main_ptr mainp = (my_main_ptr) cinfo->main;
   int ci, i, rgroup, iMCUheight, rows_left;
   jpeg_component_info *compptr;
   JSAMPARRAY xbuf;
@@ -286,12 +287,12 @@ set_bottom_pointers (j_decompress_ptr cinfo)
      * so we need only do it once.
      */
     if (ci == 0) {
-      main->rowgroups_avail = (JDIMENSION) ((rows_left-1) / rgroup + 1);
+      mainp->rowgroups_avail = (JDIMENSION) ((rows_left-1) / rgroup + 1);
     }
     /* Duplicate the last real sample row rgroup*2 times; this pads out the
      * last partial rowgroup and ensures at least one full rowgroup of context.
      */
-    xbuf = main->xbuffer[main->whichptr][ci];
+    xbuf = mainp->xbuffer[mainp->whichptr][ci];
     for (i = 0; i < rgroup * 2; i++) {
       xbuf[rows_left + i] = xbuf[rows_left-1];
     }
@@ -306,27 +307,27 @@ set_bottom_pointers (j_decompress_ptr cinfo)
 METHODDEF(void)
 start_pass_main (j_decompress_ptr cinfo, J_BUF_MODE pass_mode)
 {
-  my_main_ptr main = (my_main_ptr) cinfo->main;
+  my_main_ptr mainp = (my_main_ptr) cinfo->main;
 
   switch (pass_mode) {
   case JBUF_PASS_THRU:
     if (cinfo->upsample->need_context_rows) {
-      main->pub.process_data = process_data_context_main;
+      mainp->pub.process_data = process_data_context_main;
       make_funny_pointers(cinfo); /* Create the xbuffer[] lists */
-      main->whichptr = 0;	/* Read first iMCU row into xbuffer[0] */
-      main->context_state = CTX_PREPARE_FOR_IMCU;
-      main->iMCU_row_ctr = 0;
+      mainp->whichptr = 0;	/* Read first iMCU row into xbuffer[0] */
+      mainp->context_state = CTX_PREPARE_FOR_IMCU;
+      mainp->iMCU_row_ctr = 0;
     } else {
       /* Simple case with no context needed */
-      main->pub.process_data = process_data_simple_main;
+      mainp->pub.process_data = process_data_simple_main;
     }
-    main->buffer_full = FALSE;	/* Mark buffer empty */
-    main->rowgroup_ctr = 0;
+    mainp->buffer_full = FALSE;	/* Mark buffer empty */
+    mainp->rowgroup_ctr = 0;
     break;
 #ifdef QUANT_2PASS_SUPPORTED
   case JBUF_CRANK_DEST:
     /* For last pass of 2-pass quantization, just crank the postprocessor */
-    main->pub.process_data = process_data_crank_post;
+    mainp->pub.process_data = process_data_crank_post;
     break;
 #endif
   default:
@@ -346,14 +347,14 @@ process_data_simple_main (j_decompress_ptr cinfo,
 			  JSAMPARRAY output_buf, JDIMENSION *out_row_ctr,
 			  JDIMENSION out_rows_avail)
 {
-  my_main_ptr main = (my_main_ptr) cinfo->main;
+  my_main_ptr mainp = (my_main_ptr) cinfo->main;
   JDIMENSION rowgroups_avail;
 
   /* Read input data if we haven't filled the main buffer yet */
-  if (! main->buffer_full) {
-    if (! (*cinfo->coef->decompress_data) (cinfo, main->buffer))
+  if (! mainp->buffer_full) {
+    if (! (*cinfo->coef->decompress_data) (cinfo, mainp->buffer))
       return;			/* suspension forced, can do nothing more */
-    main->buffer_full = TRUE;	/* OK, we have an iMCU row to work with */
+    mainp->buffer_full = TRUE;	/* OK, we have an iMCU row to work with */
   }
 
   /* There are always min_DCT_scaled_size row groups in an iMCU row. */
@@ -364,14 +365,14 @@ process_data_simple_main (j_decompress_ptr cinfo,
    */
 
   /* Feed the postprocessor */
-  (*cinfo->post->post_process_data) (cinfo, main->buffer,
-				     &main->rowgroup_ctr, rowgroups_avail,
+  (*cinfo->post->post_process_data) (cinfo, mainp->buffer,
+				     &mainp->rowgroup_ctr, rowgroups_avail,
 				     output_buf, out_row_ctr, out_rows_avail);
 
   /* Has postprocessor consumed all the data yet? If so, mark buffer empty */
-  if (main->rowgroup_ctr >= rowgroups_avail) {
-    main->buffer_full = FALSE;
-    main->rowgroup_ctr = 0;
+  if (mainp->rowgroup_ctr >= rowgroups_avail) {
+    mainp->buffer_full = FALSE;
+    mainp->rowgroup_ctr = 0;
   }
 }
 
@@ -386,15 +387,15 @@ process_data_context_main (j_decompress_ptr cinfo,
 			   JSAMPARRAY output_buf, JDIMENSION *out_row_ctr,
 			   JDIMENSION out_rows_avail)
 {
-  my_main_ptr main = (my_main_ptr) cinfo->main;
+  my_main_ptr mainp = (my_main_ptr) cinfo->main;
 
   /* Read input data if we haven't filled the main buffer yet */
-  if (! main->buffer_full) {
+  if (! mainp->buffer_full) {
     if (! (*cinfo->coef->decompress_data) (cinfo,
-					   main->xbuffer[main->whichptr]))
+					   mainp->xbuffer[mainp->whichptr]))
       return;			/* suspension forced, can do nothing more */
-    main->buffer_full = TRUE;	/* OK, we have an iMCU row to work with */
-    main->iMCU_row_ctr++;	/* count rows received */
+    mainp->buffer_full = TRUE;	/* OK, we have an iMCU row to work with */
+    mainp->iMCU_row_ctr++;	/* count rows received */
   }
 
   /* Postprocessor typically will not swallow all the input data it is handed
@@ -402,47 +403,47 @@ process_data_context_main (j_decompress_ptr cinfo,
    * to exit and restart.  This switch lets us keep track of how far we got.
    * Note that each case falls through to the next on successful completion.
    */
-  switch (main->context_state) {
+  switch (mainp->context_state) {
   case CTX_POSTPONED_ROW:
     /* Call postprocessor using previously set pointers for postponed row */
-    (*cinfo->post->post_process_data) (cinfo, main->xbuffer[main->whichptr],
-			&main->rowgroup_ctr, main->rowgroups_avail,
+    (*cinfo->post->post_process_data) (cinfo, mainp->xbuffer[mainp->whichptr],
+			&mainp->rowgroup_ctr, mainp->rowgroups_avail,
 			output_buf, out_row_ctr, out_rows_avail);
-    if (main->rowgroup_ctr < main->rowgroups_avail)
+    if (mainp->rowgroup_ctr < mainp->rowgroups_avail)
       return;			/* Need to suspend */
-    main->context_state = CTX_PREPARE_FOR_IMCU;
+    mainp->context_state = CTX_PREPARE_FOR_IMCU;
     if (*out_row_ctr >= out_rows_avail)
       return;			/* Postprocessor exactly filled output buf */
     /*FALLTHROUGH*/
   case CTX_PREPARE_FOR_IMCU:
     /* Prepare to process first M-1 row groups of this iMCU row */
-    main->rowgroup_ctr = 0;
-    main->rowgroups_avail = (JDIMENSION) (cinfo->min_DCT_v_scaled_size - 1);
+    mainp->rowgroup_ctr = 0;
+    mainp->rowgroups_avail = (JDIMENSION) (cinfo->min_DCT_v_scaled_size - 1);
     /* Check for bottom of image: if so, tweak pointers to "duplicate"
      * the last sample row, and adjust rowgroups_avail to ignore padding rows.
      */
-    if (main->iMCU_row_ctr == cinfo->total_iMCU_rows)
+    if (mainp->iMCU_row_ctr == cinfo->total_iMCU_rows)
       set_bottom_pointers(cinfo);
-    main->context_state = CTX_PROCESS_IMCU;
+    mainp->context_state = CTX_PROCESS_IMCU;
     /*FALLTHROUGH*/
   case CTX_PROCESS_IMCU:
     /* Call postprocessor using previously set pointers */
-    (*cinfo->post->post_process_data) (cinfo, main->xbuffer[main->whichptr],
-			&main->rowgroup_ctr, main->rowgroups_avail,
+    (*cinfo->post->post_process_data) (cinfo, mainp->xbuffer[mainp->whichptr],
+			&mainp->rowgroup_ctr, mainp->rowgroups_avail,
 			output_buf, out_row_ctr, out_rows_avail);
-    if (main->rowgroup_ctr < main->rowgroups_avail)
+    if (mainp->rowgroup_ctr < mainp->rowgroups_avail)
       return;			/* Need to suspend */
     /* After the first iMCU, change wraparound pointers to normal state */
-    if (main->iMCU_row_ctr == 1)
+    if (mainp->iMCU_row_ctr == 1)
       set_wraparound_pointers(cinfo);
     /* Prepare to load new iMCU row using other xbuffer list */
-    main->whichptr ^= 1;	/* 0=>1 or 1=>0 */
-    main->buffer_full = FALSE;
+    mainp->whichptr ^= 1;	/* 0=>1 or 1=>0 */
+    mainp->buffer_full = FALSE;
     /* Still need to process last row group of this iMCU row, */
     /* which is saved at index M+1 of the other xbuffer */
-    main->rowgroup_ctr = (JDIMENSION) (cinfo->min_DCT_v_scaled_size + 1);
-    main->rowgroups_avail = (JDIMENSION) (cinfo->min_DCT_v_scaled_size + 2);
-    main->context_state = CTX_POSTPONED_ROW;
+    mainp->rowgroup_ctr = (JDIMENSION) (cinfo->min_DCT_v_scaled_size + 1);
+    mainp->rowgroups_avail = (JDIMENSION) (cinfo->min_DCT_v_scaled_size + 2);
+    mainp->context_state = CTX_POSTPONED_ROW;
   }
 }
 
@@ -475,15 +476,15 @@ process_data_crank_post (j_decompress_ptr cinfo,
 GLOBAL(void)
 jinit_d_main_controller (j_decompress_ptr cinfo, boolean need_full_buffer)
 {
-  my_main_ptr main;
+  my_main_ptr mainp;
   int ci, rgroup, ngroups;
   jpeg_component_info *compptr;
 
-  main = (my_main_ptr)
+  mainp = (my_main_ptr)
     (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
 				SIZEOF(my_main_controller));
-  cinfo->main = (struct jpeg_d_main_controller *) main;
-  main->pub.start_pass = start_pass_main;
+  cinfo->main = &mainp->pub;
+  mainp->pub.start_pass = start_pass_main;
 
   if (need_full_buffer)		/* shouldn't happen */
     ERREXIT(cinfo, JERR_BAD_BUFFER_MODE);
@@ -504,9 +505,9 @@ jinit_d_main_controller (j_decompress_ptr cinfo, boolean need_full_buffer)
        ci++, compptr++) {
     rgroup = (compptr->v_samp_factor * compptr->DCT_v_scaled_size) /
       cinfo->min_DCT_v_scaled_size; /* height of a row group of component */
-    main->buffer[ci] = (*cinfo->mem->alloc_sarray)
+    mainp->buffer[ci] = (*cinfo->mem->alloc_sarray)
       ((j_common_ptr) cinfo, JPOOL_IMAGE,
-			 compptr->width_in_blocks * compptr->DCT_h_scaled_size,
+       compptr->width_in_blocks * ((JDIMENSION) compptr->DCT_h_scaled_size),
        (JDIMENSION) (rgroup * ngroups));
   }
 }

jdmarker.c

@@ -2,7 +2,7 @@
  * jdmarker.c
  *
  * Copyright (C) 1991-1998, Thomas G. Lane.
- * Modified 2009 by Guido Vollbeding.
+ * Modified 2009-2013 by Guido Vollbeding.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
@@ -77,6 +77,7 @@ typedef enum {			/* JPEG marker codes */
   M_APP15 = 0xef,
 
   M_JPG0  = 0xf0,
+  M_JPG8  = 0xf8,
   M_JPG13 = 0xfd,
   M_COM   = 0xfe,
 
@@ -217,6 +218,7 @@ get_soi (j_decompress_ptr cinfo)
   /* Set initial assumptions for colorspace etc */
 
   cinfo->jpeg_color_space = JCS_UNKNOWN;
+  cinfo->color_transform = JCT_NONE;
   cinfo->CCIR601_sampling = FALSE; /* Assume non-CCIR sampling??? */
 
   cinfo->saw_JFIF_marker = FALSE;
@@ -240,7 +242,7 @@ get_sof (j_decompress_ptr cinfo, boolean is_baseline, boolean is_prog,
 /* Process a SOFn marker */
 {
   INT32 length;
-  int c, ci;
+  int c, ci, i;
   jpeg_component_info * compptr;
   INPUT_VARS(cinfo);
 
@@ -267,8 +269,8 @@ get_sof (j_decompress_ptr cinfo, boolean is_baseline, boolean is_prog,
   /* We don't support files in which the image height is initially specified */
   /* as 0 and is later redefined by DNL.  As long as we have to check that,  */
   /* might as well have a general sanity check. */
-  if (cinfo->image_height <= 0 || cinfo->image_width <= 0
-      || cinfo->num_components <= 0)
+  if (cinfo->image_height <= 0 || cinfo->image_width <= 0 ||
+      cinfo->num_components <= 0)
     ERREXIT(cinfo, JERR_EMPTY_IMAGE);
 
   if (length != (cinfo->num_components * 3))
@@ -279,10 +281,26 @@ get_sof (j_decompress_ptr cinfo, boolean is_baseline, boolean is_prog,
 			((j_common_ptr) cinfo, JPOOL_IMAGE,
 			 cinfo->num_components * SIZEOF(jpeg_component_info));
 
-  for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
-       ci++, compptr++) {
+  for (ci = 0; ci < cinfo->num_components; ci++) {
+    INPUT_BYTE(cinfo, c, return FALSE);
+    /* Check to see whether component id has already been seen   */
+    /* (in violation of the spec, but unfortunately seen in some */
+    /* files).  If so, create "fake" component id equal to the   */
+    /* max id seen so far + 1. */
+    for (i = 0, compptr = cinfo->comp_info; i < ci; i++, compptr++) {
+      if (c == compptr->component_id) {
+	compptr = cinfo->comp_info;
+	c = compptr->component_id;
+	compptr++;
+	for (i = 1; i < ci; i++, compptr++) {
+	  if (compptr->component_id > c) c = compptr->component_id;
+	}
+	c++;
+	break;
+      }
+    }
+    compptr->component_id = c;
     compptr->component_index = ci;
-    INPUT_BYTE(cinfo, compptr->component_id, return FALSE);
     INPUT_BYTE(cinfo, c, return FALSE);
     compptr->h_samp_factor = (c >> 4) & 15;
     compptr->v_samp_factor = (c     ) & 15;
@@ -305,12 +323,12 @@ get_sos (j_decompress_ptr cinfo)
 /* Process a SOS marker */
 {
   INT32 length;
-  int i, ci, n, c, cc;
+  int c, ci, i, n;
   jpeg_component_info * compptr;
   INPUT_VARS(cinfo);
 
   if (! cinfo->marker->saw_SOF)
-    ERREXIT(cinfo, JERR_SOS_NO_SOF);
+    ERREXITS(cinfo, JERR_SOF_BEFORE, "SOS");
 
   INPUT_2BYTES(cinfo, length, return FALSE);
 
@@ -328,24 +346,41 @@ get_sos (j_decompress_ptr cinfo)
   /* Collect the component-spec parameters */
 
   for (i = 0; i < n; i++) {
-    INPUT_BYTE(cinfo, cc, return FALSE);
     INPUT_BYTE(cinfo, c, return FALSE);
 
+    /* Detect the case where component id's are not unique, and, if so, */
+    /* create a fake component id using the same logic as in get_sof.   */
+    /* Note:  This also ensures that all of the SOF components are      */
+    /* referenced in the single scan case, which prevents access to     */
+    /* uninitialized memory in later decoding stages. */
+    for (ci = 0; ci < i; ci++) {
+      if (c == cinfo->cur_comp_info[ci]->component_id) {
+	c = cinfo->cur_comp_info[0]->component_id;
+	for (ci = 1; ci < i; ci++) {
+	  compptr = cinfo->cur_comp_info[ci];
+	  if (compptr->component_id > c) c = compptr->component_id;
+	}
+	c++;
+	break;
+      }
+    }
+
     for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
 	 ci++, compptr++) {
-      if (cc == compptr->component_id)
+      if (c == compptr->component_id)
 	goto id_found;
     }
 
-    ERREXIT1(cinfo, JERR_BAD_COMPONENT_ID, cc);
+    ERREXIT1(cinfo, JERR_BAD_COMPONENT_ID, c);
 
   id_found:
 
     cinfo->cur_comp_info[i] = compptr;
+    INPUT_BYTE(cinfo, c, return FALSE);
     compptr->dc_tbl_no = (c >> 4) & 15;
     compptr->ac_tbl_no = (c     ) & 15;
 
-    TRACEMS3(cinfo, 1, JTRC_SOS_COMPONENT, cc,
+    TRACEMS3(cinfo, 1, JTRC_SOS_COMPONENT, compptr->component_id,
 	     compptr->dc_tbl_no, compptr->ac_tbl_no);
   }
 
@@ -461,6 +496,8 @@ get_dht (j_decompress_ptr cinfo)
     if (count > 256 || ((INT32) count) > length)
       ERREXIT(cinfo, JERR_BAD_HUFF_TABLE);
 
+    MEMZERO(huffval, SIZEOF(huffval)); /* pre-zero array for later copy */
+
     for (i = 0; i < count; i++)
       INPUT_BYTE(cinfo, huffval[i], return FALSE);
 
@@ -605,6 +642,68 @@ get_dri (j_decompress_ptr cinfo)
 }
 
 
+LOCAL(boolean)
+get_lse (j_decompress_ptr cinfo)
+/* Process an LSE marker */
+{
+  INT32 length;
+  unsigned int tmp;
+  int cid;
+  INPUT_VARS(cinfo);
+
+  if (! cinfo->marker->saw_SOF)
+    ERREXITS(cinfo, JERR_SOF_BEFORE, "LSE");
+
+  if (cinfo->num_components < 3) goto bad;
+
+  INPUT_2BYTES(cinfo, length, return FALSE);
+
+  if (length != 24)
+    ERREXIT(cinfo, JERR_BAD_LENGTH);
+
+  INPUT_BYTE(cinfo, tmp, return FALSE);
+  if (tmp != 0x0D)	/* ID inverse transform specification */
+    ERREXIT1(cinfo, JERR_UNKNOWN_MARKER, cinfo->unread_marker);
+  INPUT_2BYTES(cinfo, tmp, return FALSE);
+  if (tmp != MAXJSAMPLE) goto bad;		/* MAXTRANS */
+  INPUT_BYTE(cinfo, tmp, return FALSE);
+  if (tmp != 3) goto bad;			/* Nt=3 */
+  INPUT_BYTE(cinfo, cid, return FALSE);
+  if (cid != cinfo->comp_info[1].component_id) goto bad;
+  INPUT_BYTE(cinfo, cid, return FALSE);
+  if (cid != cinfo->comp_info[0].component_id) goto bad;
+  INPUT_BYTE(cinfo, cid, return FALSE);
+  if (cid != cinfo->comp_info[2].component_id) goto bad;
+  INPUT_BYTE(cinfo, tmp, return FALSE);
+  if (tmp != 0x80) goto bad;		/* F1: CENTER1=1, NORM1=0 */
+  INPUT_2BYTES(cinfo, tmp, return FALSE);
+  if (tmp != 0) goto bad;			/* A(1,1)=0 */
+  INPUT_2BYTES(cinfo, tmp, return FALSE);
+  if (tmp != 0) goto bad;			/* A(1,2)=0 */
+  INPUT_BYTE(cinfo, tmp, return FALSE);
+  if (tmp != 0) goto bad;		/* F2: CENTER2=0, NORM2=0 */
+  INPUT_2BYTES(cinfo, tmp, return FALSE);
+  if (tmp != 1) goto bad;			/* A(2,1)=1 */
+  INPUT_2BYTES(cinfo, tmp, return FALSE);
+  if (tmp != 0) goto bad;			/* A(2,2)=0 */
+  INPUT_BYTE(cinfo, tmp, return FALSE);
+  if (tmp != 0) goto bad;		/* F3: CENTER3=0, NORM3=0 */
+  INPUT_2BYTES(cinfo, tmp, return FALSE);
+  if (tmp != 1) goto bad;			/* A(3,1)=1 */
+  INPUT_2BYTES(cinfo, tmp, return FALSE);
+  if (tmp != 0) {				/* A(3,2)=0 */
+    bad:
+    ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL);
+  }
+
+  /* OK, valid transform that we can handle. */
+  cinfo->color_transform = JCT_SUBTRACT_GREEN;
+
+  INPUT_SYNC(cinfo);
+  return TRUE;
+}
+
+
 /*
  * Routines for processing APPn and COM markers.
  * These are either saved in memory or discarded, per application request.
@@ -641,12 +740,13 @@ examine_app0 (j_decompress_ptr cinfo, JOCTET FAR * data,
     cinfo->X_density = (GETJOCTET(data[8]) << 8) + GETJOCTET(data[9]);
     cinfo->Y_density = (GETJOCTET(data[10]) << 8) + GETJOCTET(data[11]);
     /* Check version.
-     * Major version must be 1, anything else signals an incompatible change.
+     * Major version must be 1 or 2, anything else signals an incompatible
+     * change.
      * (We used to treat this as an error, but now it's a nonfatal warning,
      * because some bozo at Hijaak couldn't read the spec.)
      * Minor version should be 0..2, but process anyway if newer.
      */
-    if (cinfo->JFIF_major_version != 1)
+    if (cinfo->JFIF_major_version != 1 && cinfo->JFIF_major_version != 2)
       WARNMS2(cinfo, JWRN_JFIF_MAJOR,
 	      cinfo->JFIF_major_version, cinfo->JFIF_minor_version);
     /* Generate trace messages */
@@ -1085,6 +1185,11 @@ read_markers (j_decompress_ptr cinfo)
 	return JPEG_SUSPENDED;
       break;
 
+    case M_JPG8:
+      if (! get_lse(cinfo))
+	return JPEG_SUSPENDED;
+      break;
+
     case M_APP0:
     case M_APP1:
     case M_APP2:
@@ -1314,7 +1419,7 @@ jinit_marker_reader (j_decompress_ptr cinfo)
   marker = (my_marker_ptr)
     (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT,
 				SIZEOF(my_marker_reader));
-  cinfo->marker = (struct jpeg_marker_reader *) marker;
+  cinfo->marker = &marker->pub;
   /* Initialize public method pointers */
   marker->pub.reset_marker_reader = reset_marker_reader;
   marker->pub.read_markers = read_markers;

jdmaster.c

@@ -2,7 +2,7 @@
  * jdmaster.c
  *
  * Copyright (C) 1991-1997, Thomas G. Lane.
- * Modified 2002-2011 by Guido Vollbeding.
+ * Modified 2002-2013 by Guido Vollbeding.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
@@ -51,7 +51,8 @@ use_merged_upsample (j_decompress_ptr cinfo)
   /* jdmerge.c only supports YCC=>RGB color conversion */
   if (cinfo->jpeg_color_space != JCS_YCbCr || cinfo->num_components != 3 ||
       cinfo->out_color_space != JCS_RGB ||
-      cinfo->out_color_components != RGB_PIXELSIZE)
+      cinfo->out_color_components != RGB_PIXELSIZE ||
+      cinfo->color_transform)
     return FALSE;
   /* and it only handles 2h1v or 2h2v sampling ratios */
   if (cinfo->comp_info[0].h_samp_factor != 2 ||
@@ -158,9 +159,11 @@ jpeg_calc_output_dimensions (j_decompress_ptr cinfo)
     cinfo->out_color_components = 1;
     break;
   case JCS_RGB:
+  case JCS_BG_RGB:
     cinfo->out_color_components = RGB_PIXELSIZE;
     break;
   case JCS_YCbCr:
+  case JCS_BG_YCC:
     cinfo->out_color_components = 3;
     break;
   case JCS_CMYK:
@@ -273,10 +276,19 @@ master_selection (j_decompress_ptr cinfo)
   long samplesperrow;
   JDIMENSION jd_samplesperrow;
 
+  /* For now, precision must match compiled-in value... */
+  if (cinfo->data_precision != BITS_IN_JSAMPLE)
+    ERREXIT1(cinfo, JERR_BAD_PRECISION, cinfo->data_precision);
+
   /* Initialize dimensions and other stuff */
   jpeg_calc_output_dimensions(cinfo);
   prepare_range_limit_table(cinfo);
 
+  /* Sanity check on image dimensions */
+  if (cinfo->output_height <= 0 || cinfo->output_width <= 0 ||
+      cinfo->out_color_components <= 0)
+    ERREXIT(cinfo, JERR_EMPTY_IMAGE);
+
   /* Width of an output scanline must be representable as JDIMENSION. */
   samplesperrow = (long) cinfo->output_width * (long) cinfo->out_color_components;
   jd_samplesperrow = (JDIMENSION) samplesperrow;
@@ -521,7 +533,7 @@ jinit_master_decompress (j_decompress_ptr cinfo)
   master = (my_master_ptr)
       (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
 				  SIZEOF(my_decomp_master));
-  cinfo->master = (struct jpeg_decomp_master *) master;
+  cinfo->master = &master->pub;
   master->pub.prepare_for_output_pass = prepare_for_output_pass;
   master->pub.finish_output_pass = finish_output_pass;
 

jdmerge.c

@@ -2,6 +2,7 @@
  * jdmerge.c
  *
  * Copyright (C) 1994-1996, Thomas G. Lane.
+ * Modified 2013 by Guido Vollbeding.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
@@ -103,17 +104,17 @@ build_ycc_rgb_table (j_decompress_ptr cinfo)
   for (i = 0, x = -CENTERJSAMPLE; i <= MAXJSAMPLE; i++, x++) {
     /* i is the actual input pixel value, in the range 0..MAXJSAMPLE */
     /* The Cb or Cr value we are thinking of is x = i - CENTERJSAMPLE */
-    /* Cr=>R value is nearest int to 1.40200 * x */
+    /* Cr=>R value is nearest int to 1.402 * x */
     upsample->Cr_r_tab[i] = (int)
-		    RIGHT_SHIFT(FIX(1.40200) * x + ONE_HALF, SCALEBITS);
-    /* Cb=>B value is nearest int to 1.77200 * x */
+		    RIGHT_SHIFT(FIX(1.402) * x + ONE_HALF, SCALEBITS);
+    /* Cb=>B value is nearest int to 1.772 * x */
     upsample->Cb_b_tab[i] = (int)
-		    RIGHT_SHIFT(FIX(1.77200) * x + ONE_HALF, SCALEBITS);
-    /* Cr=>G value is scaled-up -0.71414 * x */
-    upsample->Cr_g_tab[i] = (- FIX(0.71414)) * x;
-    /* Cb=>G value is scaled-up -0.34414 * x */
+		    RIGHT_SHIFT(FIX(1.772) * x + ONE_HALF, SCALEBITS);
+    /* Cr=>G value is scaled-up -0.714136286 * x */
+    upsample->Cr_g_tab[i] = (- FIX(0.714136286)) * x;
+    /* Cb=>G value is scaled-up -0.344136286 * x */
     /* We also add in ONE_HALF so that need not do it in inner loop */
-    upsample->Cb_g_tab[i] = (- FIX(0.34414)) * x + ONE_HALF;
+    upsample->Cb_g_tab[i] = (- FIX(0.344136286)) * x + ONE_HALF;
   }
 }
 

jerror.c

@@ -2,6 +2,7 @@
  * jerror.c
  *
  * Copyright (C) 1991-1998, Thomas G. Lane.
+ * Modified 2012 by Guido Vollbeding.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
@@ -66,7 +67,7 @@ const char * const jpeg_std_message_table[] = {
  * or jpeg_destroy) at some point.
  */
 
-METHODDEF(void)
+METHODDEF(noreturn_t)
 error_exit (j_common_ptr cinfo)
 {
   /* Always display the message */

jerror.h

@@ -2,7 +2,7 @@
  * jerror.h
  *
  * Copyright (C) 1994-1997, Thomas G. Lane.
- * Modified 1997-2009 by Guido Vollbeding.
+ * Modified 1997-2012 by Guido Vollbeding.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
@@ -106,11 +106,11 @@ JMESSAGE(JERR_QUANT_COMPONENTS,
 	 "Cannot quantize more than %d color components")
 JMESSAGE(JERR_QUANT_FEW_COLORS, "Cannot quantize to fewer than %d colors")
 JMESSAGE(JERR_QUANT_MANY_COLORS, "Cannot quantize to more than %d colors")
+JMESSAGE(JERR_SOF_BEFORE, "Invalid JPEG file structure: %s before SOF")
 JMESSAGE(JERR_SOF_DUPLICATE, "Invalid JPEG file structure: two SOF markers")
 JMESSAGE(JERR_SOF_NO_SOS, "Invalid JPEG file structure: missing SOS marker")
 JMESSAGE(JERR_SOF_UNSUPPORTED, "Unsupported JPEG process: SOF type 0x%02x")
 JMESSAGE(JERR_SOI_DUPLICATE, "Invalid JPEG file structure: two SOI markers")
-JMESSAGE(JERR_SOS_NO_SOF, "Invalid JPEG file structure: SOS before SOF")
 JMESSAGE(JERR_TFILE_CREATE, "Failed to create temporary file %s")
 JMESSAGE(JERR_TFILE_READ, "Read failed on temporary file")
 JMESSAGE(JERR_TFILE_SEEK, "Seek failed on temporary file")

jfdctint.c

@@ -2,7 +2,7 @@
  * jfdctint.c
  *
  * Copyright (C) 1991-1996, Thomas G. Lane.
- * Modification developed 2003-2009 by Guido Vollbeding.
+ * Modification developed 2003-2013 by Guido Vollbeding.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
@@ -165,16 +165,18 @@ jpeg_fdct_islow (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
   int ctr;
   SHIFT_TEMPS
 
-  /* Pass 1: process rows. */
-  /* Note results are scaled up by sqrt(8) compared to a true DCT; */
-  /* furthermore, we scale the results by 2**PASS1_BITS. */
+  /* Pass 1: process rows.
+   * Note results are scaled up by sqrt(8) compared to a true DCT;
+   * furthermore, we scale the results by 2**PASS1_BITS.
+   * cK represents sqrt(2) * cos(K*pi/16).
+   */
 
   dataptr = data;
   for (ctr = 0; ctr < DCTSIZE; ctr++) {
     elemptr = sample_data[ctr] + start_col;
 
     /* Even part per LL&M figure 1 --- note that published figure is faulty;
-     * rotator "sqrt(2)*c1" should be "sqrt(2)*c6".
+     * rotator "c1" should be "c6".
      */
 
     tmp0 = GETJSAMPLE(elemptr[0]) + GETJSAMPLE(elemptr[7]);
@@ -196,47 +198,49 @@ jpeg_fdct_islow (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
     dataptr[0] = (DCTELEM) ((tmp10 + tmp11 - 8 * CENTERJSAMPLE) << PASS1_BITS);
     dataptr[4] = (DCTELEM) ((tmp10 - tmp11) << PASS1_BITS);
 
-    z1 = MULTIPLY(tmp12 + tmp13, FIX_0_541196100);
+    z1 = MULTIPLY(tmp12 + tmp13, FIX_0_541196100);       /* c6 */
     /* Add fudge factor here for final descale. */
     z1 += ONE << (CONST_BITS-PASS1_BITS-1);
-    dataptr[2] = (DCTELEM) RIGHT_SHIFT(z1 + MULTIPLY(tmp12, FIX_0_765366865),
+
+    dataptr[2] = (DCTELEM)
+      RIGHT_SHIFT(z1 + MULTIPLY(tmp12, FIX_0_765366865), /* c2-c6 */
 		  CONST_BITS-PASS1_BITS);
-    dataptr[6] = (DCTELEM) RIGHT_SHIFT(z1 - MULTIPLY(tmp13, FIX_1_847759065),
+    dataptr[6] = (DCTELEM)
+      RIGHT_SHIFT(z1 - MULTIPLY(tmp13, FIX_1_847759065), /* c2+c6 */
 		  CONST_BITS-PASS1_BITS);
 
     /* Odd part per figure 8 --- note paper omits factor of sqrt(2).
-     * cK represents sqrt(2) * cos(K*pi/16).
      * i0..i3 in the paper are tmp0..tmp3 here.
      */
 
-    tmp10 = tmp0 + tmp3;
-    tmp11 = tmp1 + tmp2;
     tmp12 = tmp0 + tmp2;
     tmp13 = tmp1 + tmp3;
+
     z1 = MULTIPLY(tmp12 + tmp13, FIX_1_175875602);       /*  c3 */
     /* Add fudge factor here for final descale. */
     z1 += ONE << (CONST_BITS-PASS1_BITS-1);
 
-    tmp0  = MULTIPLY(tmp0,    FIX_1_501321110);    /*  c1+c3-c5-c7 */
-    tmp1  = MULTIPLY(tmp1,    FIX_3_072711026);    /*  c1+c3+c5-c7 */
-    tmp2  = MULTIPLY(tmp2,    FIX_2_053119869);    /*  c1+c3-c5+c7 */
-    tmp3  = MULTIPLY(tmp3,    FIX_0_298631336);    /* -c1+c3+c5-c7 */
-    tmp10 = MULTIPLY(tmp10, - FIX_0_899976223);    /*  c7-c3 */
-    tmp11 = MULTIPLY(tmp11, - FIX_2_562915447);    /* -c1-c3 */
-    tmp12 = MULTIPLY(tmp12, - FIX_0_390180644);    /*  c5-c3 */
+    tmp12 = MULTIPLY(tmp12, - FIX_0_390180644);          /* -c3+c5 */
     tmp13 = MULTIPLY(tmp13, - FIX_1_961570560);          /* -c3-c5 */
-
     tmp12 += z1;
     tmp13 += z1;
 
-    dataptr[1] = (DCTELEM)
-      RIGHT_SHIFT(tmp0 + tmp10 + tmp12, CONST_BITS-PASS1_BITS);
-    dataptr[3] = (DCTELEM)
-      RIGHT_SHIFT(tmp1 + tmp11 + tmp13, CONST_BITS-PASS1_BITS);
-    dataptr[5] = (DCTELEM)
-      RIGHT_SHIFT(tmp2 + tmp11 + tmp12, CONST_BITS-PASS1_BITS);
-    dataptr[7] = (DCTELEM)
-      RIGHT_SHIFT(tmp3 + tmp10 + tmp13, CONST_BITS-PASS1_BITS);
+    z1 = MULTIPLY(tmp0 + tmp3, - FIX_0_899976223);       /* -c3+c7 */
+    tmp0 = MULTIPLY(tmp0, FIX_1_501321110);              /*  c1+c3-c5-c7 */
+    tmp3 = MULTIPLY(tmp3, FIX_0_298631336);              /* -c1+c3+c5-c7 */
+    tmp0 += z1 + tmp12;
+    tmp3 += z1 + tmp13;
+
+    z1 = MULTIPLY(tmp1 + tmp2, - FIX_2_562915447);       /* -c1-c3 */
+    tmp1 = MULTIPLY(tmp1, FIX_3_072711026);              /*  c1+c3+c5-c7 */
+    tmp2 = MULTIPLY(tmp2, FIX_2_053119869);              /*  c1+c3-c5+c7 */
+    tmp1 += z1 + tmp13;
+    tmp2 += z1 + tmp12;
+
+    dataptr[1] = (DCTELEM) RIGHT_SHIFT(tmp0, CONST_BITS-PASS1_BITS);
+    dataptr[3] = (DCTELEM) RIGHT_SHIFT(tmp1, CONST_BITS-PASS1_BITS);
+    dataptr[5] = (DCTELEM) RIGHT_SHIFT(tmp2, CONST_BITS-PASS1_BITS);
+    dataptr[7] = (DCTELEM) RIGHT_SHIFT(tmp3, CONST_BITS-PASS1_BITS);
 
     dataptr += DCTSIZE;		/* advance pointer to next row */
   }
@@ -244,12 +248,13 @@ jpeg_fdct_islow (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
   /* Pass 2: process columns.
    * We remove the PASS1_BITS scaling, but leave the results scaled up
    * by an overall factor of 8.
+   * cK represents sqrt(2) * cos(K*pi/16).
    */
 
   dataptr = data;
   for (ctr = DCTSIZE-1; ctr >= 0; ctr--) {
     /* Even part per LL&M figure 1 --- note that published figure is faulty;
-     * rotator "sqrt(2)*c1" should be "sqrt(2)*c6".
+     * rotator "c1" should be "c6".
      */
 
     tmp0 = dataptr[DCTSIZE*0] + dataptr[DCTSIZE*7];
@@ -271,47 +276,49 @@ jpeg_fdct_islow (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
     dataptr[DCTSIZE*0] = (DCTELEM) RIGHT_SHIFT(tmp10 + tmp11, PASS1_BITS);
     dataptr[DCTSIZE*4] = (DCTELEM) RIGHT_SHIFT(tmp10 - tmp11, PASS1_BITS);
 
-    z1 = MULTIPLY(tmp12 + tmp13, FIX_0_541196100);
+    z1 = MULTIPLY(tmp12 + tmp13, FIX_0_541196100);       /* c6 */
     /* Add fudge factor here for final descale. */
     z1 += ONE << (CONST_BITS+PASS1_BITS-1);
+
     dataptr[DCTSIZE*2] = (DCTELEM)
-      RIGHT_SHIFT(z1 + MULTIPLY(tmp12, FIX_0_765366865), CONST_BITS+PASS1_BITS);
+      RIGHT_SHIFT(z1 + MULTIPLY(tmp12, FIX_0_765366865), /* c2-c6 */
+		  CONST_BITS+PASS1_BITS);
     dataptr[DCTSIZE*6] = (DCTELEM)
-      RIGHT_SHIFT(z1 - MULTIPLY(tmp13, FIX_1_847759065), CONST_BITS+PASS1_BITS);
+      RIGHT_SHIFT(z1 - MULTIPLY(tmp13, FIX_1_847759065), /* c2+c6 */
+		  CONST_BITS+PASS1_BITS);
 
     /* Odd part per figure 8 --- note paper omits factor of sqrt(2).
-     * cK represents sqrt(2) * cos(K*pi/16).
      * i0..i3 in the paper are tmp0..tmp3 here.
      */
 
-    tmp10 = tmp0 + tmp3;
-    tmp11 = tmp1 + tmp2;
     tmp12 = tmp0 + tmp2;
     tmp13 = tmp1 + tmp3;
+
     z1 = MULTIPLY(tmp12 + tmp13, FIX_1_175875602);       /*  c3 */
     /* Add fudge factor here for final descale. */
     z1 += ONE << (CONST_BITS+PASS1_BITS-1);
 
-    tmp0  = MULTIPLY(tmp0,    FIX_1_501321110);    /*  c1+c3-c5-c7 */
-    tmp1  = MULTIPLY(tmp1,    FIX_3_072711026);    /*  c1+c3+c5-c7 */
-    tmp2  = MULTIPLY(tmp2,    FIX_2_053119869);    /*  c1+c3-c5+c7 */
-    tmp3  = MULTIPLY(tmp3,    FIX_0_298631336);    /* -c1+c3+c5-c7 */
-    tmp10 = MULTIPLY(tmp10, - FIX_0_899976223);    /*  c7-c3 */
-    tmp11 = MULTIPLY(tmp11, - FIX_2_562915447);    /* -c1-c3 */
-    tmp12 = MULTIPLY(tmp12, - FIX_0_390180644);    /*  c5-c3 */
+    tmp12 = MULTIPLY(tmp12, - FIX_0_390180644);          /* -c3+c5 */
     tmp13 = MULTIPLY(tmp13, - FIX_1_961570560);          /* -c3-c5 */
-
     tmp12 += z1;
     tmp13 += z1;
 
-    dataptr[DCTSIZE*1] = (DCTELEM)
-      RIGHT_SHIFT(tmp0 + tmp10 + tmp12, CONST_BITS+PASS1_BITS);
-    dataptr[DCTSIZE*3] = (DCTELEM)
-      RIGHT_SHIFT(tmp1 + tmp11 + tmp13, CONST_BITS+PASS1_BITS);
-    dataptr[DCTSIZE*5] = (DCTELEM)
-      RIGHT_SHIFT(tmp2 + tmp11 + tmp12, CONST_BITS+PASS1_BITS);
-    dataptr[DCTSIZE*7] = (DCTELEM)
-      RIGHT_SHIFT(tmp3 + tmp10 + tmp13, CONST_BITS+PASS1_BITS);
+    z1 = MULTIPLY(tmp0 + tmp3, - FIX_0_899976223);       /* -c3+c7 */
+    tmp0 = MULTIPLY(tmp0, FIX_1_501321110);              /*  c1+c3-c5-c7 */
+    tmp3 = MULTIPLY(tmp3, FIX_0_298631336);              /* -c1+c3+c5-c7 */
+    tmp0 += z1 + tmp12;
+    tmp3 += z1 + tmp13;
+
+    z1 = MULTIPLY(tmp1 + tmp2, - FIX_2_562915447);       /* -c1-c3 */
+    tmp1 = MULTIPLY(tmp1, FIX_3_072711026);              /*  c1+c3+c5-c7 */
+    tmp2 = MULTIPLY(tmp2, FIX_2_053119869);              /*  c1+c3-c5+c7 */
+    tmp1 += z1 + tmp13;
+    tmp2 += z1 + tmp12;
+
+    dataptr[DCTSIZE*1] = (DCTELEM) RIGHT_SHIFT(tmp0, CONST_BITS+PASS1_BITS);
+    dataptr[DCTSIZE*3] = (DCTELEM) RIGHT_SHIFT(tmp1, CONST_BITS+PASS1_BITS);
+    dataptr[DCTSIZE*5] = (DCTELEM) RIGHT_SHIFT(tmp2, CONST_BITS+PASS1_BITS);
+    dataptr[DCTSIZE*7] = (DCTELEM) RIGHT_SHIFT(tmp3, CONST_BITS+PASS1_BITS);
 
     dataptr++;			/* advance pointer to next column */
   }
@@ -338,10 +345,11 @@ jpeg_fdct_7x7 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
   /* Pre-zero output coefficient block. */
   MEMZERO(data, SIZEOF(DCTELEM) * DCTSIZE2);
 
-  /* Pass 1: process rows. */
-  /* Note results are scaled up by sqrt(8) compared to a true DCT; */
-  /* furthermore, we scale the results by 2**PASS1_BITS. */
-  /* cK represents sqrt(2) * cos(K*pi/14). */
+  /* Pass 1: process rows.
+   * Note results are scaled up by sqrt(8) compared to a true DCT;
+   * furthermore, we scale the results by 2**PASS1_BITS.
+   * cK represents sqrt(2) * cos(K*pi/14).
+   */
 
   dataptr = data;
   for (ctr = 0; ctr < 7; ctr++) {
@@ -472,10 +480,11 @@ jpeg_fdct_6x6 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
   /* Pre-zero output coefficient block. */
   MEMZERO(data, SIZEOF(DCTELEM) * DCTSIZE2);
 
-  /* Pass 1: process rows. */
-  /* Note results are scaled up by sqrt(8) compared to a true DCT; */
-  /* furthermore, we scale the results by 2**PASS1_BITS. */
-  /* cK represents sqrt(2) * cos(K*pi/12). */
+  /* Pass 1: process rows.
+   * Note results are scaled up by sqrt(8) compared to a true DCT;
+   * furthermore, we scale the results by 2**PASS1_BITS.
+   * cK represents sqrt(2) * cos(K*pi/12).
+   */
 
   dataptr = data;
   for (ctr = 0; ctr < 6; ctr++) {
@@ -585,12 +594,13 @@ jpeg_fdct_5x5 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
   /* Pre-zero output coefficient block. */
   MEMZERO(data, SIZEOF(DCTELEM) * DCTSIZE2);
 
-  /* Pass 1: process rows. */
-  /* Note results are scaled up by sqrt(8) compared to a true DCT; */
-  /* furthermore, we scale the results by 2**PASS1_BITS. */
-  /* We scale the results further by 2 as part of output adaption */
-  /* scaling for different DCT size. */
-  /* cK represents sqrt(2) * cos(K*pi/10). */
+  /* Pass 1: process rows.
+   * Note results are scaled up by sqrt(8) compared to a true DCT;
+   * furthermore, we scale the results by 2**PASS1_BITS.
+   * We scale the results further by 2 as part of output adaption
+   * scaling for different DCT size.
+   * cK represents sqrt(2) * cos(K*pi/10).
+   */
 
   dataptr = data;
   for (ctr = 0; ctr < 5; ctr++) {
@@ -695,11 +705,12 @@ jpeg_fdct_4x4 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
   /* Pre-zero output coefficient block. */
   MEMZERO(data, SIZEOF(DCTELEM) * DCTSIZE2);
 
-  /* Pass 1: process rows. */
-  /* Note results are scaled up by sqrt(8) compared to a true DCT; */
-  /* furthermore, we scale the results by 2**PASS1_BITS. */
-  /* We must also scale the output by (8/4)**2 = 2**2, which we add here. */
-  /* cK represents sqrt(2) * cos(K*pi/16) [refers to 8-point FDCT]. */
+  /* Pass 1: process rows.
+   * Note results are scaled up by sqrt(8) compared to a true DCT;
+   * furthermore, we scale the results by 2**PASS1_BITS.
+   * We must also scale the output by (8/4)**2 = 2**2, which we add here.
+   * cK represents sqrt(2) * cos(K*pi/16) [refers to 8-point FDCT].
+   */
 
   dataptr = data;
   for (ctr = 0; ctr < 4; ctr++) {
@@ -737,6 +748,7 @@ jpeg_fdct_4x4 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
   /* Pass 2: process columns.
    * We remove the PASS1_BITS scaling, but leave the results scaled up
    * by an overall factor of 8.
+   * cK represents sqrt(2) * cos(K*pi/16) [refers to 8-point FDCT].
    */
 
   dataptr = data;
@@ -787,12 +799,13 @@ jpeg_fdct_3x3 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
   /* Pre-zero output coefficient block. */
   MEMZERO(data, SIZEOF(DCTELEM) * DCTSIZE2);
 
-  /* Pass 1: process rows. */
-  /* Note results are scaled up by sqrt(8) compared to a true DCT; */
-  /* furthermore, we scale the results by 2**PASS1_BITS. */
-  /* We scale the results further by 2**2 as part of output adaption */
-  /* scaling for different DCT size. */
-  /* cK represents sqrt(2) * cos(K*pi/6). */
+  /* Pass 1: process rows.
+   * Note results are scaled up by sqrt(8) compared to a true DCT;
+   * furthermore, we scale the results by 2**PASS1_BITS.
+   * We scale the results further by 2**2 as part of output adaption
+   * scaling for different DCT size.
+   * cK represents sqrt(2) * cos(K*pi/6).
+   */
 
   dataptr = data;
   for (ctr = 0; ctr < 3; ctr++) {
@@ -869,8 +882,9 @@ jpeg_fdct_2x2 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
   /* Pre-zero output coefficient block. */
   MEMZERO(data, SIZEOF(DCTELEM) * DCTSIZE2);
 
-  /* Pass 1: process rows. */
-  /* Note results are scaled up by sqrt(8) compared to a true DCT. */
+  /* Pass 1: process rows.
+   * Note results are scaled up by sqrt(8) compared to a true DCT.
+   */
 
   /* Row 0 */
   elemptr = sample_data[0] + start_col;
@@ -935,11 +949,12 @@ jpeg_fdct_9x9 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
   int ctr;
   SHIFT_TEMPS
 
-  /* Pass 1: process rows. */
-  /* Note results are scaled up by sqrt(8) compared to a true DCT; */
-  /* we scale the results further by 2 as part of output adaption */
-  /* scaling for different DCT size. */
-  /* cK represents sqrt(2) * cos(K*pi/18). */
+  /* Pass 1: process rows.
+   * Note results are scaled up by sqrt(8) compared to a true DCT;
+   * we scale the results further by 2 as part of output adaption
+   * scaling for different DCT size.
+   * cK represents sqrt(2) * cos(K*pi/18).
+   */
 
   dataptr = data;
   ctr = 0;
@@ -1084,11 +1099,12 @@ jpeg_fdct_10x10 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
   int ctr;
   SHIFT_TEMPS
 
-  /* Pass 1: process rows. */
-  /* Note results are scaled up by sqrt(8) compared to a true DCT; */
-  /* we scale the results further by 2 as part of output adaption */
-  /* scaling for different DCT size. */
-  /* cK represents sqrt(2) * cos(K*pi/20). */
+  /* Pass 1: process rows.
+   * Note results are scaled up by sqrt(8) compared to a true DCT;
+   * we scale the results further by 2 as part of output adaption
+   * scaling for different DCT size.
+   * cK represents sqrt(2) * cos(K*pi/20).
+   */
 
   dataptr = data;
   ctr = 0;
@@ -1248,11 +1264,12 @@ jpeg_fdct_11x11 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
   int ctr;
   SHIFT_TEMPS
 
-  /* Pass 1: process rows. */
-  /* Note results are scaled up by sqrt(8) compared to a true DCT; */
-  /* we scale the results further by 2 as part of output adaption */
-  /* scaling for different DCT size. */
-  /* cK represents sqrt(2) * cos(K*pi/22). */
+  /* Pass 1: process rows.
+   * Note results are scaled up by sqrt(8) compared to a true DCT;
+   * we scale the results further by 2 as part of output adaption
+   * scaling for different DCT size.
+   * cK represents sqrt(2) * cos(K*pi/22).
+   */
 
   dataptr = data;
   ctr = 0;
@@ -1430,9 +1447,10 @@ jpeg_fdct_12x12 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
   int ctr;
   SHIFT_TEMPS
 
-  /* Pass 1: process rows. */
-  /* Note results are scaled up by sqrt(8) compared to a true DCT. */
-  /* cK represents sqrt(2) * cos(K*pi/24). */
+  /* Pass 1: process rows.
+   * Note results are scaled up by sqrt(8) compared to a true DCT.
+   * cK represents sqrt(2) * cos(K*pi/24).
+   */
 
   dataptr = data;
   ctr = 0;
@@ -1596,9 +1614,10 @@ jpeg_fdct_13x13 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
   int ctr;
   SHIFT_TEMPS
 
-  /* Pass 1: process rows. */
-  /* Note results are scaled up by sqrt(8) compared to a true DCT. */
-  /* cK represents sqrt(2) * cos(K*pi/26). */
+  /* Pass 1: process rows.
+   * Note results are scaled up by sqrt(8) compared to a true DCT.
+   * cK represents sqrt(2) * cos(K*pi/26).
+   */
 
   dataptr = data;
   ctr = 0;
@@ -1794,9 +1813,10 @@ jpeg_fdct_14x14 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
   int ctr;
   SHIFT_TEMPS
 
-  /* Pass 1: process rows. */
-  /* Note results are scaled up by sqrt(8) compared to a true DCT. */
-  /* cK represents sqrt(2) * cos(K*pi/28). */
+  /* Pass 1: process rows.
+   * Note results are scaled up by sqrt(8) compared to a true DCT.
+   * cK represents sqrt(2) * cos(K*pi/28).
+   */
 
   dataptr = data;
   ctr = 0;
@@ -1995,9 +2015,10 @@ jpeg_fdct_15x15 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
   int ctr;
   SHIFT_TEMPS
 
-  /* Pass 1: process rows. */
-  /* Note results are scaled up by sqrt(8) compared to a true DCT. */
-  /* cK represents sqrt(2) * cos(K*pi/30). */
+  /* Pass 1: process rows.
+   * Note results are scaled up by sqrt(8) compared to a true DCT.
+   * cK represents sqrt(2) * cos(K*pi/30).
+   */
 
   dataptr = data;
   ctr = 0;
@@ -2173,10 +2194,11 @@ jpeg_fdct_16x16 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
   int ctr;
   SHIFT_TEMPS
 
-  /* Pass 1: process rows. */
-  /* Note results are scaled up by sqrt(8) compared to a true DCT; */
-  /* furthermore, we scale the results by 2**PASS1_BITS. */
-  /* cK represents sqrt(2) * cos(K*pi/32). */
+  /* Pass 1: process rows.
+   * Note results are scaled up by sqrt(8) compared to a true DCT;
+   * furthermore, we scale the results by 2**PASS1_BITS.
+   * cK represents sqrt(2) * cos(K*pi/32).
+   */
 
   dataptr = data;
   ctr = 0;
@@ -2275,6 +2297,7 @@ jpeg_fdct_16x16 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
    * We remove the PASS1_BITS scaling, but leave the results scaled up
    * by an overall factor of 8.
    * We must also scale the output by (8/16)**2 = 1/2**2.
+   * cK represents sqrt(2) * cos(K*pi/32).
    */
 
   dataptr = data;
@@ -2380,10 +2403,11 @@ jpeg_fdct_16x8 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
   int ctr;
   SHIFT_TEMPS
 
-  /* Pass 1: process rows. */
-  /* Note results are scaled up by sqrt(8) compared to a true DCT; */
-  /* furthermore, we scale the results by 2**PASS1_BITS. */
-  /* 16-point FDCT kernel, cK represents sqrt(2) * cos(K*pi/32). */
+  /* Pass 1: process rows.
+   * Note results are scaled up by sqrt(8) compared to a true DCT;
+   * furthermore, we scale the results by 2**PASS1_BITS.
+   * 16-point FDCT kernel, cK represents sqrt(2) * cos(K*pi/32).
+   */
 
   dataptr = data;
   ctr = 0;
@@ -2475,12 +2499,13 @@ jpeg_fdct_16x8 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
    * We remove the PASS1_BITS scaling, but leave the results scaled up
    * by an overall factor of 8.
    * We must also scale the output by 8/16 = 1/2.
+   * 8-point FDCT kernel, cK represents sqrt(2) * cos(K*pi/16).
    */
 
   dataptr = data;
   for (ctr = DCTSIZE-1; ctr >= 0; ctr--) {
     /* Even part per LL&M figure 1 --- note that published figure is faulty;
-     * rotator "sqrt(2)*c1" should be "sqrt(2)*c6".
+     * rotator "c1" should be "c6".
      */
 
     tmp0 = dataptr[DCTSIZE*0] + dataptr[DCTSIZE*7];
@@ -2501,43 +2526,43 @@ jpeg_fdct_16x8 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
     dataptr[DCTSIZE*0] = (DCTELEM) DESCALE(tmp10 + tmp11, PASS1_BITS+1);
     dataptr[DCTSIZE*4] = (DCTELEM) DESCALE(tmp10 - tmp11, PASS1_BITS+1);
 
-    z1 = MULTIPLY(tmp12 + tmp13, FIX_0_541196100);
-    dataptr[DCTSIZE*2] = (DCTELEM) DESCALE(z1 + MULTIPLY(tmp12, FIX_0_765366865),
+    z1 = MULTIPLY(tmp12 + tmp13, FIX_0_541196100);   /* c6 */
+    dataptr[DCTSIZE*2] = (DCTELEM)
+      DESCALE(z1 + MULTIPLY(tmp12, FIX_0_765366865), /* c2-c6 */
 	      CONST_BITS+PASS1_BITS+1);
-    dataptr[DCTSIZE*6] = (DCTELEM) DESCALE(z1 - MULTIPLY(tmp13, FIX_1_847759065),
+    dataptr[DCTSIZE*6] = (DCTELEM)
+      DESCALE(z1 - MULTIPLY(tmp13, FIX_1_847759065), /* c2+c6 */
 	      CONST_BITS+PASS1_BITS+1);
 
     /* Odd part per figure 8 --- note paper omits factor of sqrt(2).
-     * 8-point FDCT kernel, cK represents sqrt(2) * cos(K*pi/16).
      * i0..i3 in the paper are tmp0..tmp3 here.
      */
 
-    tmp10 = tmp0 + tmp3;
-    tmp11 = tmp1 + tmp2;
     tmp12 = tmp0 + tmp2;
     tmp13 = tmp1 + tmp3;
+
     z1 = MULTIPLY(tmp12 + tmp13, FIX_1_175875602);   /*  c3 */
-
-    tmp0  = MULTIPLY(tmp0,    FIX_1_501321110);    /*  c1+c3-c5-c7 */
-    tmp1  = MULTIPLY(tmp1,    FIX_3_072711026);    /*  c1+c3+c5-c7 */
-    tmp2  = MULTIPLY(tmp2,    FIX_2_053119869);    /*  c1+c3-c5+c7 */
-    tmp3  = MULTIPLY(tmp3,    FIX_0_298631336);    /* -c1+c3+c5-c7 */
-    tmp10 = MULTIPLY(tmp10, - FIX_0_899976223);    /*  c7-c3 */
-    tmp11 = MULTIPLY(tmp11, - FIX_2_562915447);    /* -c1-c3 */
-    tmp12 = MULTIPLY(tmp12, - FIX_0_390180644);    /*  c5-c3 */
+    tmp12 = MULTIPLY(tmp12, - FIX_0_390180644);      /* -c3+c5 */
     tmp13 = MULTIPLY(tmp13, - FIX_1_961570560);      /* -c3-c5 */
-
     tmp12 += z1;
     tmp13 += z1;
 
-    dataptr[DCTSIZE*1] = (DCTELEM) DESCALE(tmp0 + tmp10 + tmp12,
-					   CONST_BITS+PASS1_BITS+1);
-    dataptr[DCTSIZE*3] = (DCTELEM) DESCALE(tmp1 + tmp11 + tmp13,
-					   CONST_BITS+PASS1_BITS+1);
-    dataptr[DCTSIZE*5] = (DCTELEM) DESCALE(tmp2 + tmp11 + tmp12,
-					   CONST_BITS+PASS1_BITS+1);
-    dataptr[DCTSIZE*7] = (DCTELEM) DESCALE(tmp3 + tmp10 + tmp13,
-					   CONST_BITS+PASS1_BITS+1);
+    z1 = MULTIPLY(tmp0 + tmp3, - FIX_0_899976223);   /* -c3+c7 */
+    tmp0 = MULTIPLY(tmp0, FIX_1_501321110);          /*  c1+c3-c5-c7 */
+    tmp3 = MULTIPLY(tmp3, FIX_0_298631336);          /* -c1+c3+c5-c7 */
+    tmp0 += z1 + tmp12;
+    tmp3 += z1 + tmp13;
+
+    z1 = MULTIPLY(tmp1 + tmp2, - FIX_2_562915447);   /* -c1-c3 */
+    tmp1 = MULTIPLY(tmp1, FIX_3_072711026);          /*  c1+c3+c5-c7 */
+    tmp2 = MULTIPLY(tmp2, FIX_2_053119869);          /*  c1+c3-c5+c7 */
+    tmp1 += z1 + tmp13;
+    tmp2 += z1 + tmp12;
+
+    dataptr[DCTSIZE*1] = (DCTELEM) DESCALE(tmp0, CONST_BITS+PASS1_BITS+1);
+    dataptr[DCTSIZE*3] = (DCTELEM) DESCALE(tmp1, CONST_BITS+PASS1_BITS+1);
+    dataptr[DCTSIZE*5] = (DCTELEM) DESCALE(tmp2, CONST_BITS+PASS1_BITS+1);
+    dataptr[DCTSIZE*7] = (DCTELEM) DESCALE(tmp3, CONST_BITS+PASS1_BITS+1);
 
     dataptr++;			/* advance pointer to next column */
   }
@@ -2564,10 +2589,11 @@ jpeg_fdct_14x7 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
   /* Zero bottom row of output coefficient block. */
   MEMZERO(&data[DCTSIZE*7], SIZEOF(DCTELEM) * DCTSIZE);
 
-  /* Pass 1: process rows. */
-  /* Note results are scaled up by sqrt(8) compared to a true DCT; */
-  /* furthermore, we scale the results by 2**PASS1_BITS. */
-  /* 14-point FDCT kernel, cK represents sqrt(2) * cos(K*pi/28). */
+  /* Pass 1: process rows.
+   * Note results are scaled up by sqrt(8) compared to a true DCT;
+   * furthermore, we scale the results by 2**PASS1_BITS.
+   * 14-point FDCT kernel, cK represents sqrt(2) * cos(K*pi/28).
+   */
 
   dataptr = data;
   for (ctr = 0; ctr < 7; ctr++) {
@@ -2727,10 +2753,11 @@ jpeg_fdct_12x6 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
   /* Zero 2 bottom rows of output coefficient block. */
   MEMZERO(&data[DCTSIZE*6], SIZEOF(DCTELEM) * DCTSIZE * 2);
 
-  /* Pass 1: process rows. */
-  /* Note results are scaled up by sqrt(8) compared to a true DCT; */
-  /* furthermore, we scale the results by 2**PASS1_BITS. */
-  /* 12-point FDCT kernel, cK represents sqrt(2) * cos(K*pi/24). */
+  /* Pass 1: process rows.
+   * Note results are scaled up by sqrt(8) compared to a true DCT;
+   * furthermore, we scale the results by 2**PASS1_BITS.
+   * 12-point FDCT kernel, cK represents sqrt(2) * cos(K*pi/24).
+   */
 
   dataptr = data;
   for (ctr = 0; ctr < 6; ctr++) {
@@ -2866,10 +2893,11 @@ jpeg_fdct_10x5 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
   /* Zero 3 bottom rows of output coefficient block. */
   MEMZERO(&data[DCTSIZE*5], SIZEOF(DCTELEM) * DCTSIZE * 3);
 
-  /* Pass 1: process rows. */
-  /* Note results are scaled up by sqrt(8) compared to a true DCT; */
-  /* furthermore, we scale the results by 2**PASS1_BITS. */
-  /* 10-point FDCT kernel, cK represents sqrt(2) * cos(K*pi/20). */
+  /* Pass 1: process rows.
+   * Note results are scaled up by sqrt(8) compared to a true DCT;
+   * furthermore, we scale the results by 2**PASS1_BITS.
+   * 10-point FDCT kernel, cK represents sqrt(2) * cos(K*pi/20).
+   */
 
   dataptr = data;
   for (ctr = 0; ctr < 5; ctr++) {
@@ -2999,17 +3027,19 @@ jpeg_fdct_8x4 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
   /* Zero 4 bottom rows of output coefficient block. */
   MEMZERO(&data[DCTSIZE*4], SIZEOF(DCTELEM) * DCTSIZE * 4);
 
-  /* Pass 1: process rows. */
-  /* Note results are scaled up by sqrt(8) compared to a true DCT; */
-  /* furthermore, we scale the results by 2**PASS1_BITS. */
-  /* We must also scale the output by 8/4 = 2, which we add here. */
+  /* Pass 1: process rows.
+   * Note results are scaled up by sqrt(8) compared to a true DCT;
+   * furthermore, we scale the results by 2**PASS1_BITS.
+   * We must also scale the output by 8/4 = 2, which we add here.
+   * 8-point FDCT kernel, cK represents sqrt(2) * cos(K*pi/16).
+   */
 
   dataptr = data;
   for (ctr = 0; ctr < 4; ctr++) {
     elemptr = sample_data[ctr] + start_col;
 
     /* Even part per LL&M figure 1 --- note that published figure is faulty;
-     * rotator "sqrt(2)*c1" should be "sqrt(2)*c6".
+     * rotator "c1" should be "c6".
      */
 
     tmp0 = GETJSAMPLE(elemptr[0]) + GETJSAMPLE(elemptr[7]);
@@ -3032,47 +3062,49 @@ jpeg_fdct_8x4 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
       ((tmp10 + tmp11 - 8 * CENTERJSAMPLE) << (PASS1_BITS+1));
     dataptr[4] = (DCTELEM) ((tmp10 - tmp11) << (PASS1_BITS+1));
 
-    z1 = MULTIPLY(tmp12 + tmp13, FIX_0_541196100);
+    z1 = MULTIPLY(tmp12 + tmp13, FIX_0_541196100);       /* c6 */
     /* Add fudge factor here for final descale. */
     z1 += ONE << (CONST_BITS-PASS1_BITS-2);
-    dataptr[2] = (DCTELEM) RIGHT_SHIFT(z1 + MULTIPLY(tmp12, FIX_0_765366865),
+
+    dataptr[2] = (DCTELEM)
+      RIGHT_SHIFT(z1 + MULTIPLY(tmp12, FIX_0_765366865), /* c2-c6 */
 		  CONST_BITS-PASS1_BITS-1);
-    dataptr[6] = (DCTELEM) RIGHT_SHIFT(z1 - MULTIPLY(tmp13, FIX_1_847759065),
+    dataptr[6] = (DCTELEM)
+      RIGHT_SHIFT(z1 - MULTIPLY(tmp13, FIX_1_847759065), /* c2+c6 */
 		  CONST_BITS-PASS1_BITS-1);
 
     /* Odd part per figure 8 --- note paper omits factor of sqrt(2).
-     * 8-point FDCT kernel, cK represents sqrt(2) * cos(K*pi/16).
      * i0..i3 in the paper are tmp0..tmp3 here.
      */
 
-    tmp10 = tmp0 + tmp3;
-    tmp11 = tmp1 + tmp2;
     tmp12 = tmp0 + tmp2;
     tmp13 = tmp1 + tmp3;
+
     z1 = MULTIPLY(tmp12 + tmp13, FIX_1_175875602);       /*  c3 */
     /* Add fudge factor here for final descale. */
     z1 += ONE << (CONST_BITS-PASS1_BITS-2);
 
-    tmp0  = MULTIPLY(tmp0,    FIX_1_501321110);    /*  c1+c3-c5-c7 */
-    tmp1  = MULTIPLY(tmp1,    FIX_3_072711026);    /*  c1+c3+c5-c7 */
-    tmp2  = MULTIPLY(tmp2,    FIX_2_053119869);    /*  c1+c3-c5+c7 */
-    tmp3  = MULTIPLY(tmp3,    FIX_0_298631336);    /* -c1+c3+c5-c7 */
-    tmp10 = MULTIPLY(tmp10, - FIX_0_899976223);    /*  c7-c3 */
-    tmp11 = MULTIPLY(tmp11, - FIX_2_562915447);    /* -c1-c3 */
-    tmp12 = MULTIPLY(tmp12, - FIX_0_390180644);    /*  c5-c3 */
+    tmp12 = MULTIPLY(tmp12, - FIX_0_390180644);          /* -c3+c5 */
     tmp13 = MULTIPLY(tmp13, - FIX_1_961570560);          /* -c3-c5 */
-
     tmp12 += z1;
     tmp13 += z1;
 
-    dataptr[1] = (DCTELEM)
-      RIGHT_SHIFT(tmp0 + tmp10 + tmp12, CONST_BITS-PASS1_BITS-1);
-    dataptr[3] = (DCTELEM)
-      RIGHT_SHIFT(tmp1 + tmp11 + tmp13, CONST_BITS-PASS1_BITS-1);
-    dataptr[5] = (DCTELEM)
-      RIGHT_SHIFT(tmp2 + tmp11 + tmp12, CONST_BITS-PASS1_BITS-1);
-    dataptr[7] = (DCTELEM)
-      RIGHT_SHIFT(tmp3 + tmp10 + tmp13, CONST_BITS-PASS1_BITS-1);
+    z1 = MULTIPLY(tmp0 + tmp3, - FIX_0_899976223);       /* -c3+c7 */
+    tmp0 = MULTIPLY(tmp0, FIX_1_501321110);              /*  c1+c3-c5-c7 */
+    tmp3 = MULTIPLY(tmp3, FIX_0_298631336);              /* -c1+c3+c5-c7 */
+    tmp0 += z1 + tmp12;
+    tmp3 += z1 + tmp13;
+
+    z1 = MULTIPLY(tmp1 + tmp2, - FIX_2_562915447);       /* -c1-c3 */
+    tmp1 = MULTIPLY(tmp1, FIX_3_072711026);              /*  c1+c3+c5-c7 */
+    tmp2 = MULTIPLY(tmp2, FIX_2_053119869);              /*  c1+c3-c5+c7 */
+    tmp1 += z1 + tmp13;
+    tmp2 += z1 + tmp12;
+
+    dataptr[1] = (DCTELEM) RIGHT_SHIFT(tmp0, CONST_BITS-PASS1_BITS-1);
+    dataptr[3] = (DCTELEM) RIGHT_SHIFT(tmp1, CONST_BITS-PASS1_BITS-1);
+    dataptr[5] = (DCTELEM) RIGHT_SHIFT(tmp2, CONST_BITS-PASS1_BITS-1);
+    dataptr[7] = (DCTELEM) RIGHT_SHIFT(tmp3, CONST_BITS-PASS1_BITS-1);
 
     dataptr += DCTSIZE;		/* advance pointer to next row */
   }
@@ -3080,7 +3112,8 @@ jpeg_fdct_8x4 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
   /* Pass 2: process columns.
    * We remove the PASS1_BITS scaling, but leave the results scaled up
    * by an overall factor of 8.
-   * 4-point FDCT kernel, cK represents sqrt(2) * cos(K*pi/16).
+   * 4-point FDCT kernel,
+   * cK represents sqrt(2) * cos(K*pi/16) [refers to 8-point FDCT].
    */
 
   dataptr = data;
@@ -3134,12 +3167,13 @@ jpeg_fdct_6x3 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
   /* Pre-zero output coefficient block. */
   MEMZERO(data, SIZEOF(DCTELEM) * DCTSIZE2);
 
-  /* Pass 1: process rows. */
-  /* Note results are scaled up by sqrt(8) compared to a true DCT; */
-  /* furthermore, we scale the results by 2**PASS1_BITS. */
-  /* We scale the results further by 2 as part of output adaption */
-  /* scaling for different DCT size. */
-  /* 6-point FDCT kernel, cK represents sqrt(2) * cos(K*pi/12). */
+  /* Pass 1: process rows.
+   * Note results are scaled up by sqrt(8) compared to a true DCT;
+   * furthermore, we scale the results by 2**PASS1_BITS.
+   * We scale the results further by 2 as part of output adaption
+   * scaling for different DCT size.
+   * 6-point FDCT kernel, cK represents sqrt(2) * cos(K*pi/12).
+   */
 
   dataptr = data;
   for (ctr = 0; ctr < 3; ctr++) {
@@ -3234,12 +3268,13 @@ jpeg_fdct_4x2 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
   /* Pre-zero output coefficient block. */
   MEMZERO(data, SIZEOF(DCTELEM) * DCTSIZE2);
 
-  /* Pass 1: process rows. */
-  /* Note results are scaled up by sqrt(8) compared to a true DCT; */
-  /* furthermore, we scale the results by 2**PASS1_BITS. */
-  /* We must also scale the output by (8/4)*(8/2) = 2**3, which we add here. */
-  /* 4-point FDCT kernel, */
-  /* cK represents sqrt(2) * cos(K*pi/16) [refers to 8-point FDCT]. */
+  /* Pass 1: process rows.
+   * Note results are scaled up by sqrt(8) compared to a true DCT;
+   * furthermore, we scale the results by 2**PASS1_BITS.
+   * We must also scale the output by (8/4)*(8/2) = 2**3, which we add here.
+   * 4-point FDCT kernel,
+   * cK represents sqrt(2) * cos(K*pi/16) [refers to 8-point FDCT].
+   */
 
   dataptr = data;
   for (ctr = 0; ctr < 2; ctr++) {
@@ -3323,10 +3358,12 @@ jpeg_fdct_2x1 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
    */
 
   /* Even part */
+
   /* Apply unsigned->signed conversion */
   data[0] = (DCTELEM) ((tmp0 + tmp1 - 2 * CENTERJSAMPLE) << 5);
 
   /* Odd part */
+
   data[1] = (DCTELEM) ((tmp0 - tmp1) << 5);
 }
 
@@ -3350,9 +3387,11 @@ jpeg_fdct_8x16 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
   int ctr;
   SHIFT_TEMPS
 
-  /* Pass 1: process rows. */
-  /* Note results are scaled up by sqrt(8) compared to a true DCT; */
-  /* furthermore, we scale the results by 2**PASS1_BITS. */
+  /* Pass 1: process rows.
+   * Note results are scaled up by sqrt(8) compared to a true DCT;
+   * furthermore, we scale the results by 2**PASS1_BITS.
+   * 8-point FDCT kernel, cK represents sqrt(2) * cos(K*pi/16).
+   */
 
   dataptr = data;
   ctr = 0;
@@ -3360,7 +3399,7 @@ jpeg_fdct_8x16 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
     elemptr = sample_data[ctr] + start_col;
 
     /* Even part per LL&M figure 1 --- note that published figure is faulty;
-     * rotator "sqrt(2)*c1" should be "sqrt(2)*c6".
+     * rotator "c1" should be "c6".
      */
 
     tmp0 = GETJSAMPLE(elemptr[0]) + GETJSAMPLE(elemptr[7]);
@@ -3382,39 +3421,43 @@ jpeg_fdct_8x16 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
     dataptr[0] = (DCTELEM) ((tmp10 + tmp11 - 8 * CENTERJSAMPLE) << PASS1_BITS);
     dataptr[4] = (DCTELEM) ((tmp10 - tmp11) << PASS1_BITS);
 
-    z1 = MULTIPLY(tmp12 + tmp13, FIX_0_541196100);
-    dataptr[2] = (DCTELEM) DESCALE(z1 + MULTIPLY(tmp12, FIX_0_765366865),
+    z1 = MULTIPLY(tmp12 + tmp13, FIX_0_541196100);   /* c6 */
+    dataptr[2] = (DCTELEM)
+      DESCALE(z1 + MULTIPLY(tmp12, FIX_0_765366865), /* c2-c6 */
 	      CONST_BITS-PASS1_BITS);
-    dataptr[6] = (DCTELEM) DESCALE(z1 - MULTIPLY(tmp13, FIX_1_847759065),
+    dataptr[6] = (DCTELEM)
+      DESCALE(z1 - MULTIPLY(tmp13, FIX_1_847759065), /* c2+c6 */
 	      CONST_BITS-PASS1_BITS);
 
     /* Odd part per figure 8 --- note paper omits factor of sqrt(2).
-     * 8-point FDCT kernel, cK represents sqrt(2) * cos(K*pi/16).
      * i0..i3 in the paper are tmp0..tmp3 here.
      */
 
-    tmp10 = tmp0 + tmp3;
-    tmp11 = tmp1 + tmp2;
     tmp12 = tmp0 + tmp2;
     tmp13 = tmp1 + tmp3;
+
     z1 = MULTIPLY(tmp12 + tmp13, FIX_1_175875602);   /*  c3 */
-
-    tmp0  = MULTIPLY(tmp0,    FIX_1_501321110);    /*  c1+c3-c5-c7 */
-    tmp1  = MULTIPLY(tmp1,    FIX_3_072711026);    /*  c1+c3+c5-c7 */
-    tmp2  = MULTIPLY(tmp2,    FIX_2_053119869);    /*  c1+c3-c5+c7 */
-    tmp3  = MULTIPLY(tmp3,    FIX_0_298631336);    /* -c1+c3+c5-c7 */
-    tmp10 = MULTIPLY(tmp10, - FIX_0_899976223);    /*  c7-c3 */
-    tmp11 = MULTIPLY(tmp11, - FIX_2_562915447);    /* -c1-c3 */
-    tmp12 = MULTIPLY(tmp12, - FIX_0_390180644);    /*  c5-c3 */
+    tmp12 = MULTIPLY(tmp12, - FIX_0_390180644);      /* -c3+c5 */
     tmp13 = MULTIPLY(tmp13, - FIX_1_961570560);      /* -c3-c5 */
-
     tmp12 += z1;
     tmp13 += z1;
 
-    dataptr[1] = (DCTELEM) DESCALE(tmp0 + tmp10 + tmp12, CONST_BITS-PASS1_BITS);
-    dataptr[3] = (DCTELEM) DESCALE(tmp1 + tmp11 + tmp13, CONST_BITS-PASS1_BITS);
-    dataptr[5] = (DCTELEM) DESCALE(tmp2 + tmp11 + tmp12, CONST_BITS-PASS1_BITS);
-    dataptr[7] = (DCTELEM) DESCALE(tmp3 + tmp10 + tmp13, CONST_BITS-PASS1_BITS);
+    z1 = MULTIPLY(tmp0 + tmp3, - FIX_0_899976223);   /* -c3+c7 */
+    tmp0 = MULTIPLY(tmp0, FIX_1_501321110);          /*  c1+c3-c5-c7 */
+    tmp3 = MULTIPLY(tmp3, FIX_0_298631336);          /* -c1+c3+c5-c7 */
+    tmp0 += z1 + tmp12;
+    tmp3 += z1 + tmp13;
+
+    z1 = MULTIPLY(tmp1 + tmp2, - FIX_2_562915447);   /* -c1-c3 */
+    tmp1 = MULTIPLY(tmp1, FIX_3_072711026);          /*  c1+c3+c5-c7 */
+    tmp2 = MULTIPLY(tmp2, FIX_2_053119869);          /*  c1+c3-c5+c7 */
+    tmp1 += z1 + tmp13;
+    tmp2 += z1 + tmp12;
+
+    dataptr[1] = (DCTELEM) DESCALE(tmp0, CONST_BITS-PASS1_BITS);
+    dataptr[3] = (DCTELEM) DESCALE(tmp1, CONST_BITS-PASS1_BITS);
+    dataptr[5] = (DCTELEM) DESCALE(tmp2, CONST_BITS-PASS1_BITS);
+    dataptr[7] = (DCTELEM) DESCALE(tmp3, CONST_BITS-PASS1_BITS);
 
     ctr++;
 
@@ -3541,10 +3584,11 @@ jpeg_fdct_7x14 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
   /* Pre-zero output coefficient block. */
   MEMZERO(data, SIZEOF(DCTELEM) * DCTSIZE2);
 
-  /* Pass 1: process rows. */
-  /* Note results are scaled up by sqrt(8) compared to a true DCT; */
-  /* furthermore, we scale the results by 2**PASS1_BITS. */
-  /* 7-point FDCT kernel, cK represents sqrt(2) * cos(K*pi/14). */
+  /* Pass 1: process rows.
+   * Note results are scaled up by sqrt(8) compared to a true DCT;
+   * furthermore, we scale the results by 2**PASS1_BITS.
+   * 7-point FDCT kernel, cK represents sqrt(2) * cos(K*pi/14).
+   */
 
   dataptr = data;
   ctr = 0;
@@ -3721,10 +3765,11 @@ jpeg_fdct_6x12 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
   /* Pre-zero output coefficient block. */
   MEMZERO(data, SIZEOF(DCTELEM) * DCTSIZE2);
 
-  /* Pass 1: process rows. */
-  /* Note results are scaled up by sqrt(8) compared to a true DCT; */
-  /* furthermore, we scale the results by 2**PASS1_BITS. */
-  /* 6-point FDCT kernel, cK represents sqrt(2) * cos(K*pi/12). */
+  /* Pass 1: process rows.
+   * Note results are scaled up by sqrt(8) compared to a true DCT;
+   * furthermore, we scale the results by 2**PASS1_BITS.
+   * 6-point FDCT kernel, cK represents sqrt(2) * cos(K*pi/12).
+   */
 
   dataptr = data;
   ctr = 0;
@@ -3870,10 +3915,11 @@ jpeg_fdct_5x10 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
   /* Pre-zero output coefficient block. */
   MEMZERO(data, SIZEOF(DCTELEM) * DCTSIZE2);
 
-  /* Pass 1: process rows. */
-  /* Note results are scaled up by sqrt(8) compared to a true DCT; */
-  /* furthermore, we scale the results by 2**PASS1_BITS. */
-  /* 5-point FDCT kernel, cK represents sqrt(2) * cos(K*pi/10). */
+  /* Pass 1: process rows.
+   * Note results are scaled up by sqrt(8) compared to a true DCT;
+   * furthermore, we scale the results by 2**PASS1_BITS.
+   * 5-point FDCT kernel, cK represents sqrt(2) * cos(K*pi/10).
+   */
 
   dataptr = data;
   ctr = 0;
@@ -4015,11 +4061,13 @@ jpeg_fdct_4x8 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
   /* Pre-zero output coefficient block. */
   MEMZERO(data, SIZEOF(DCTELEM) * DCTSIZE2);
 
-  /* Pass 1: process rows. */
-  /* Note results are scaled up by sqrt(8) compared to a true DCT; */
-  /* furthermore, we scale the results by 2**PASS1_BITS. */
-  /* We must also scale the output by 8/4 = 2, which we add here. */
-  /* 4-point FDCT kernel, cK represents sqrt(2) * cos(K*pi/16). */
+  /* Pass 1: process rows.
+   * Note results are scaled up by sqrt(8) compared to a true DCT;
+   * furthermore, we scale the results by 2**PASS1_BITS.
+   * We must also scale the output by 8/4 = 2, which we add here.
+   * 4-point FDCT kernel,
+   * cK represents sqrt(2) * cos(K*pi/16) [refers to 8-point FDCT].
+   */
 
   dataptr = data;
   for (ctr = 0; ctr < DCTSIZE; ctr++) {
@@ -4057,12 +4105,13 @@ jpeg_fdct_4x8 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
   /* Pass 2: process columns.
    * We remove the PASS1_BITS scaling, but leave the results scaled up
    * by an overall factor of 8.
+   * 8-point FDCT kernel, cK represents sqrt(2) * cos(K*pi/16).
    */
 
   dataptr = data;
   for (ctr = 0; ctr < 4; ctr++) {
     /* Even part per LL&M figure 1 --- note that published figure is faulty;
-     * rotator "sqrt(2)*c1" should be "sqrt(2)*c6".
+     * rotator "c1" should be "c6".
      */
 
     tmp0 = dataptr[DCTSIZE*0] + dataptr[DCTSIZE*7];
@@ -4084,47 +4133,49 @@ jpeg_fdct_4x8 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
     dataptr[DCTSIZE*0] = (DCTELEM) RIGHT_SHIFT(tmp10 + tmp11, PASS1_BITS);
     dataptr[DCTSIZE*4] = (DCTELEM) RIGHT_SHIFT(tmp10 - tmp11, PASS1_BITS);
 
-    z1 = MULTIPLY(tmp12 + tmp13, FIX_0_541196100);
+    z1 = MULTIPLY(tmp12 + tmp13, FIX_0_541196100);       /* c6 */
     /* Add fudge factor here for final descale. */
     z1 += ONE << (CONST_BITS+PASS1_BITS-1);
+
     dataptr[DCTSIZE*2] = (DCTELEM)
-      RIGHT_SHIFT(z1 + MULTIPLY(tmp12, FIX_0_765366865), CONST_BITS+PASS1_BITS);
+      RIGHT_SHIFT(z1 + MULTIPLY(tmp12, FIX_0_765366865), /* c2-c6 */
+		  CONST_BITS+PASS1_BITS);
     dataptr[DCTSIZE*6] = (DCTELEM)
-      RIGHT_SHIFT(z1 - MULTIPLY(tmp13, FIX_1_847759065), CONST_BITS+PASS1_BITS);
+      RIGHT_SHIFT(z1 - MULTIPLY(tmp13, FIX_1_847759065), /* c2+c6 */
+		  CONST_BITS+PASS1_BITS);
 
     /* Odd part per figure 8 --- note paper omits factor of sqrt(2).
-     * 8-point FDCT kernel, cK represents sqrt(2) * cos(K*pi/16).
      * i0..i3 in the paper are tmp0..tmp3 here.
      */
 
-    tmp10 = tmp0 + tmp3;
-    tmp11 = tmp1 + tmp2;
     tmp12 = tmp0 + tmp2;
     tmp13 = tmp1 + tmp3;
+
     z1 = MULTIPLY(tmp12 + tmp13, FIX_1_175875602);       /*  c3 */
     /* Add fudge factor here for final descale. */
     z1 += ONE << (CONST_BITS+PASS1_BITS-1);
 
-    tmp0  = MULTIPLY(tmp0,    FIX_1_501321110);    /*  c1+c3-c5-c7 */
-    tmp1  = MULTIPLY(tmp1,    FIX_3_072711026);    /*  c1+c3+c5-c7 */
-    tmp2  = MULTIPLY(tmp2,    FIX_2_053119869);    /*  c1+c3-c5+c7 */
-    tmp3  = MULTIPLY(tmp3,    FIX_0_298631336);    /* -c1+c3+c5-c7 */
-    tmp10 = MULTIPLY(tmp10, - FIX_0_899976223);    /*  c7-c3 */
-    tmp11 = MULTIPLY(tmp11, - FIX_2_562915447);    /* -c1-c3 */
-    tmp12 = MULTIPLY(tmp12, - FIX_0_390180644);    /*  c5-c3 */
+    tmp12 = MULTIPLY(tmp12, - FIX_0_390180644);          /* -c3+c5 */
     tmp13 = MULTIPLY(tmp13, - FIX_1_961570560);          /* -c3-c5 */
-
     tmp12 += z1;
     tmp13 += z1;
 
-    dataptr[DCTSIZE*1] = (DCTELEM)
-      RIGHT_SHIFT(tmp0 + tmp10 + tmp12, CONST_BITS+PASS1_BITS);
-    dataptr[DCTSIZE*3] = (DCTELEM)
-      RIGHT_SHIFT(tmp1 + tmp11 + tmp13, CONST_BITS+PASS1_BITS);
-    dataptr[DCTSIZE*5] = (DCTELEM)
-      RIGHT_SHIFT(tmp2 + tmp11 + tmp12, CONST_BITS+PASS1_BITS);
-    dataptr[DCTSIZE*7] = (DCTELEM)
-      RIGHT_SHIFT(tmp3 + tmp10 + tmp13, CONST_BITS+PASS1_BITS);
+    z1 = MULTIPLY(tmp0 + tmp3, - FIX_0_899976223);       /* -c3+c7 */
+    tmp0 = MULTIPLY(tmp0, FIX_1_501321110);              /*  c1+c3-c5-c7 */
+    tmp3 = MULTIPLY(tmp3, FIX_0_298631336);              /* -c1+c3+c5-c7 */
+    tmp0 += z1 + tmp12;
+    tmp3 += z1 + tmp13;
+
+    z1 = MULTIPLY(tmp1 + tmp2, - FIX_2_562915447);       /* -c1-c3 */
+    tmp1 = MULTIPLY(tmp1, FIX_3_072711026);              /*  c1+c3+c5-c7 */
+    tmp2 = MULTIPLY(tmp2, FIX_2_053119869);              /*  c1+c3-c5+c7 */
+    tmp1 += z1 + tmp13;
+    tmp2 += z1 + tmp12;
+
+    dataptr[DCTSIZE*1] = (DCTELEM) RIGHT_SHIFT(tmp0, CONST_BITS+PASS1_BITS);
+    dataptr[DCTSIZE*3] = (DCTELEM) RIGHT_SHIFT(tmp1, CONST_BITS+PASS1_BITS);
+    dataptr[DCTSIZE*5] = (DCTELEM) RIGHT_SHIFT(tmp2, CONST_BITS+PASS1_BITS);
+    dataptr[DCTSIZE*7] = (DCTELEM) RIGHT_SHIFT(tmp3, CONST_BITS+PASS1_BITS);
 
     dataptr++;			/* advance pointer to next column */
   }
@@ -4150,12 +4201,13 @@ jpeg_fdct_3x6 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
   /* Pre-zero output coefficient block. */
   MEMZERO(data, SIZEOF(DCTELEM) * DCTSIZE2);
 
-  /* Pass 1: process rows. */
-  /* Note results are scaled up by sqrt(8) compared to a true DCT; */
-  /* furthermore, we scale the results by 2**PASS1_BITS. */
-  /* We scale the results further by 2 as part of output adaption */
-  /* scaling for different DCT size. */
-  /* 3-point FDCT kernel, cK represents sqrt(2) * cos(K*pi/6). */
+  /* Pass 1: process rows.
+   * Note results are scaled up by sqrt(8) compared to a true DCT;
+   * furthermore, we scale the results by 2**PASS1_BITS.
+   * We scale the results further by 2 as part of output adaption
+   * scaling for different DCT size.
+   * 3-point FDCT kernel, cK represents sqrt(2) * cos(K*pi/6).
+   */
 
   dataptr = data;
   for (ctr = 0; ctr < 6; ctr++) {
@@ -4255,9 +4307,10 @@ jpeg_fdct_2x4 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
   /* Pre-zero output coefficient block. */
   MEMZERO(data, SIZEOF(DCTELEM) * DCTSIZE2);
 
-  /* Pass 1: process rows. */
-  /* Note results are scaled up by sqrt(8) compared to a true DCT. */
-  /* We must also scale the output by (8/2)*(8/4) = 2**3, which we add here. */
+  /* Pass 1: process rows.
+   * Note results are scaled up by sqrt(8) compared to a true DCT.
+   * We must also scale the output by (8/2)*(8/4) = 2**3, which we add here.
+   */
 
   dataptr = data;
   for (ctr = 0; ctr < 4; ctr++) {
@@ -4329,18 +4382,23 @@ jpeg_fdct_1x2 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)
   /* Pre-zero output coefficient block. */
   MEMZERO(data, SIZEOF(DCTELEM) * DCTSIZE2);
 
-  tmp0 = GETJSAMPLE(sample_data[0][start_col]);
-  tmp1 = GETJSAMPLE(sample_data[1][start_col]);
+  /* Pass 1: empty. */
 
-  /* We leave the results scaled up by an overall factor of 8.
+  /* Pass 2: process columns.
+   * We leave the results scaled up by an overall factor of 8.
    * We must also scale the output by (8/1)*(8/2) = 2**5.
    */
 
   /* Even part */
+
+  tmp0 = GETJSAMPLE(sample_data[0][start_col]);
+  tmp1 = GETJSAMPLE(sample_data[1][start_col]);
+
   /* Apply unsigned->signed conversion */
   data[DCTSIZE*0] = (DCTELEM) ((tmp0 + tmp1 - 2 * CENTERJSAMPLE) << 5);
 
   /* Odd part */
+
   data[DCTSIZE*1] = (DCTELEM) ((tmp0 - tmp1) << 5);
 }
 

jidctint.c

@@ -2,7 +2,7 @@
  * jidctint.c
  *
  * Copyright (C) 1991-1998, Thomas G. Lane.
- * Modification developed 2002-2009 by Guido Vollbeding.
+ * Modification developed 2002-2013 by Guido Vollbeding.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
@@ -165,6 +165,8 @@
 
 /*
  * Perform dequantization and inverse DCT on one block of coefficients.
+ *
+ * cK represents sqrt(2) * cos(K*pi/16).
  */
 
 GLOBAL(void)
@@ -184,9 +186,10 @@ jpeg_idct_islow (j_decompress_ptr cinfo, jpeg_component_info * compptr,
   int workspace[DCTSIZE2];	/* buffers data between passes */
   SHIFT_TEMPS
 
-  /* Pass 1: process columns from input, store into work array. */
-  /* Note results are scaled up by sqrt(8) compared to a true IDCT; */
-  /* furthermore, we scale the results by 2**PASS1_BITS. */
+  /* Pass 1: process columns from input, store into work array.
+   * Note results are scaled up by sqrt(8) compared to a true IDCT;
+   * furthermore, we scale the results by 2**PASS1_BITS.
+   */
 
   inptr = coef_block;
   quantptr = (ISLOW_MULT_TYPE *) compptr->dct_table;
@@ -223,15 +226,16 @@ jpeg_idct_islow (j_decompress_ptr cinfo, jpeg_component_info * compptr,
       continue;
     }
 
-    /* Even part: reverse the even part of the forward DCT. */
-    /* The rotator is sqrt(2)*c(-6). */
+    /* Even part: reverse the even part of the forward DCT.
+     * The rotator is c(-6).
+     */
 
     z2 = DEQUANTIZE(inptr[DCTSIZE*2], quantptr[DCTSIZE*2]);
     z3 = DEQUANTIZE(inptr[DCTSIZE*6], quantptr[DCTSIZE*6]);
 
-    z1 = MULTIPLY(z2 + z3, FIX_0_541196100);
-    tmp2 = z1 + MULTIPLY(z2, FIX_0_765366865);
-    tmp3 = z1 - MULTIPLY(z3, FIX_1_847759065);
+    z1 = MULTIPLY(z2 + z3, FIX_0_541196100);       /* c6 */
+    tmp2 = z1 + MULTIPLY(z2, FIX_0_765366865);     /* c2-c6 */
+    tmp3 = z1 - MULTIPLY(z3, FIX_1_847759065);     /* c2+c6 */
 
     z2 = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]);
     z3 = DEQUANTIZE(inptr[DCTSIZE*4], quantptr[DCTSIZE*4]);
@@ -260,21 +264,21 @@ jpeg_idct_islow (j_decompress_ptr cinfo, jpeg_component_info * compptr,
     z2 = tmp0 + tmp2;
     z3 = tmp1 + tmp3;
 
-    z1 = MULTIPLY(z2 + z3, FIX_1_175875602); /* sqrt(2) * c3 */
-    z2 = MULTIPLY(z2, - FIX_1_961570560); /* sqrt(2) * (-c3-c5) */
-    z3 = MULTIPLY(z3, - FIX_0_390180644); /* sqrt(2) * (c5-c3) */
+    z1 = MULTIPLY(z2 + z3, FIX_1_175875602);       /*  c3 */
+    z2 = MULTIPLY(z2, - FIX_1_961570560);          /* -c3-c5 */
+    z3 = MULTIPLY(z3, - FIX_0_390180644);          /* -c3+c5 */
     z2 += z1;
     z3 += z1;
 
-    z1 = MULTIPLY(tmp0 + tmp3, - FIX_0_899976223); /* sqrt(2) * (c7-c3) */
-    tmp0 = MULTIPLY(tmp0, FIX_0_298631336); /* sqrt(2) * (-c1+c3+c5-c7) */
-    tmp3 = MULTIPLY(tmp3, FIX_1_501321110); /* sqrt(2) * ( c1+c3-c5-c7) */
+    z1 = MULTIPLY(tmp0 + tmp3, - FIX_0_899976223); /* -c3+c7 */
+    tmp0 = MULTIPLY(tmp0, FIX_0_298631336);        /* -c1+c3+c5-c7 */
+    tmp3 = MULTIPLY(tmp3, FIX_1_501321110);        /*  c1+c3-c5-c7 */
     tmp0 += z1 + z2;
     tmp3 += z1 + z3;
 
-    z1 = MULTIPLY(tmp1 + tmp2, - FIX_2_562915447); /* sqrt(2) * (-c1-c3) */
-    tmp1 = MULTIPLY(tmp1, FIX_2_053119869); /* sqrt(2) * ( c1+c3-c5+c7) */
-    tmp2 = MULTIPLY(tmp2, FIX_3_072711026); /* sqrt(2) * ( c1+c3+c5-c7) */
+    z1 = MULTIPLY(tmp1 + tmp2, - FIX_2_562915447); /* -c1-c3 */
+    tmp1 = MULTIPLY(tmp1, FIX_2_053119869);        /*  c1+c3-c5+c7 */
+    tmp2 = MULTIPLY(tmp2, FIX_3_072711026);        /*  c1+c3+c5-c7 */
     tmp1 += z1 + z3;
     tmp2 += z1 + z2;
 
@@ -294,9 +298,10 @@ jpeg_idct_islow (j_decompress_ptr cinfo, jpeg_component_info * compptr,
     wsptr++;
   }
 
-  /* Pass 2: process rows from work array, store into output array. */
-  /* Note that we must descale the results by a factor of 8 == 2**3, */
-  /* and also undo the PASS1_BITS scaling. */
+  /* Pass 2: process rows from work array, store into output array.
+   * Note that we must descale the results by a factor of 8 == 2**3,
+   * and also undo the PASS1_BITS scaling.
+   */
 
   wsptr = workspace;
   for (ctr = 0; ctr < DCTSIZE; ctr++) {
@@ -330,15 +335,16 @@ jpeg_idct_islow (j_decompress_ptr cinfo, jpeg_component_info * compptr,
     }
 #endif
 
-    /* Even part: reverse the even part of the forward DCT. */
-    /* The rotator is sqrt(2)*c(-6). */
+    /* Even part: reverse the even part of the forward DCT.
+     * The rotator is c(-6).
+     */
 
     z2 = (INT32) wsptr[2];
     z3 = (INT32) wsptr[6];
 
-    z1 = MULTIPLY(z2 + z3, FIX_0_541196100);
-    tmp2 = z1 + MULTIPLY(z2, FIX_0_765366865);
-    tmp3 = z1 - MULTIPLY(z3, FIX_1_847759065);
+    z1 = MULTIPLY(z2 + z3, FIX_0_541196100);       /* c6 */
+    tmp2 = z1 + MULTIPLY(z2, FIX_0_765366865);     /* c2-c6 */
+    tmp3 = z1 - MULTIPLY(z3, FIX_1_847759065);     /* c2+c6 */
 
     /* Add fudge factor here for final descale. */
     z2 = (INT32) wsptr[0] + (ONE << (PASS1_BITS+2));
@@ -364,21 +370,21 @@ jpeg_idct_islow (j_decompress_ptr cinfo, jpeg_component_info * compptr,
     z2 = tmp0 + tmp2;
     z3 = tmp1 + tmp3;
 
-    z1 = MULTIPLY(z2 + z3, FIX_1_175875602); /* sqrt(2) * c3 */
-    z2 = MULTIPLY(z2, - FIX_1_961570560); /* sqrt(2) * (-c3-c5) */
-    z3 = MULTIPLY(z3, - FIX_0_390180644); /* sqrt(2) * (c5-c3) */
+    z1 = MULTIPLY(z2 + z3, FIX_1_175875602);       /*  c3 */
+    z2 = MULTIPLY(z2, - FIX_1_961570560);          /* -c3-c5 */
+    z3 = MULTIPLY(z3, - FIX_0_390180644);          /* -c3+c5 */
     z2 += z1;
     z3 += z1;
 
-    z1 = MULTIPLY(tmp0 + tmp3, - FIX_0_899976223); /* sqrt(2) * (c7-c3) */
-    tmp0 = MULTIPLY(tmp0, FIX_0_298631336); /* sqrt(2) * (-c1+c3+c5-c7) */
-    tmp3 = MULTIPLY(tmp3, FIX_1_501321110); /* sqrt(2) * ( c1+c3-c5-c7) */
+    z1 = MULTIPLY(tmp0 + tmp3, - FIX_0_899976223); /* -c3+c7 */
+    tmp0 = MULTIPLY(tmp0, FIX_0_298631336);        /* -c1+c3+c5-c7 */
+    tmp3 = MULTIPLY(tmp3, FIX_1_501321110);        /*  c1+c3-c5-c7 */
     tmp0 += z1 + z2;
     tmp3 += z1 + z3;
 
-    z1 = MULTIPLY(tmp1 + tmp2, - FIX_2_562915447); /* sqrt(2) * (-c1-c3) */
-    tmp1 = MULTIPLY(tmp1, FIX_2_053119869); /* sqrt(2) * ( c1+c3-c5+c7) */
-    tmp2 = MULTIPLY(tmp2, FIX_3_072711026); /* sqrt(2) * ( c1+c3+c5-c7) */
+    z1 = MULTIPLY(tmp1 + tmp2, - FIX_2_562915447); /* -c1-c3 */
+    tmp1 = MULTIPLY(tmp1, FIX_2_053119869);        /*  c1+c3-c5+c7 */
+    tmp2 = MULTIPLY(tmp2, FIX_3_072711026);        /*  c1+c3+c5-c7 */
     tmp1 += z1 + z3;
     tmp2 += z1 + z2;
 
@@ -2835,9 +2841,11 @@ jpeg_idct_16x8 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
   int workspace[8*8];	/* buffers data between passes */
   SHIFT_TEMPS
 
-  /* Pass 1: process columns from input, store into work array. */
-  /* Note results are scaled up by sqrt(8) compared to a true IDCT; */
-  /* furthermore, we scale the results by 2**PASS1_BITS. */
+  /* Pass 1: process columns from input, store into work array.
+   * Note results are scaled up by sqrt(8) compared to a true IDCT;
+   * furthermore, we scale the results by 2**PASS1_BITS.
+   * 8-point IDCT kernel, cK represents sqrt(2) * cos(K*pi/16).
+   */
 
   inptr = coef_block;
   quantptr = (ISLOW_MULT_TYPE *) compptr->dct_table;
@@ -2874,15 +2882,16 @@ jpeg_idct_16x8 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
       continue;
     }
 
-    /* Even part: reverse the even part of the forward DCT. */
-    /* The rotator is sqrt(2)*c(-6). */
+    /* Even part: reverse the even part of the forward DCT.
+     * The rotator is c(-6).
+     */
 
     z2 = DEQUANTIZE(inptr[DCTSIZE*2], quantptr[DCTSIZE*2]);
     z3 = DEQUANTIZE(inptr[DCTSIZE*6], quantptr[DCTSIZE*6]);
 
-    z1 = MULTIPLY(z2 + z3, FIX_0_541196100);
-    tmp2 = z1 + MULTIPLY(z2, FIX_0_765366865);
-    tmp3 = z1 - MULTIPLY(z3, FIX_1_847759065);
+    z1 = MULTIPLY(z2 + z3, FIX_0_541196100);       /* c6 */
+    tmp2 = z1 + MULTIPLY(z2, FIX_0_765366865);     /* c2-c6 */
+    tmp3 = z1 - MULTIPLY(z3, FIX_1_847759065);     /* c2+c6 */
 
     z2 = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]);
     z3 = DEQUANTIZE(inptr[DCTSIZE*4], quantptr[DCTSIZE*4]);
@@ -2911,21 +2920,21 @@ jpeg_idct_16x8 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
     z2 = tmp0 + tmp2;
     z3 = tmp1 + tmp3;
 
-    z1 = MULTIPLY(z2 + z3, FIX_1_175875602); /* sqrt(2) * c3 */
-    z2 = MULTIPLY(z2, - FIX_1_961570560); /* sqrt(2) * (-c3-c5) */
-    z3 = MULTIPLY(z3, - FIX_0_390180644); /* sqrt(2) * (c5-c3) */
+    z1 = MULTIPLY(z2 + z3, FIX_1_175875602);       /*  c3 */
+    z2 = MULTIPLY(z2, - FIX_1_961570560);          /* -c3-c5 */
+    z3 = MULTIPLY(z3, - FIX_0_390180644);          /* -c3+c5 */
     z2 += z1;
     z3 += z1;
 
-    z1 = MULTIPLY(tmp0 + tmp3, - FIX_0_899976223); /* sqrt(2) * (c7-c3) */
-    tmp0 = MULTIPLY(tmp0, FIX_0_298631336); /* sqrt(2) * (-c1+c3+c5-c7) */
-    tmp3 = MULTIPLY(tmp3, FIX_1_501321110); /* sqrt(2) * ( c1+c3-c5-c7) */
+    z1 = MULTIPLY(tmp0 + tmp3, - FIX_0_899976223); /* -c3+c7 */
+    tmp0 = MULTIPLY(tmp0, FIX_0_298631336);        /* -c1+c3+c5-c7 */
+    tmp3 = MULTIPLY(tmp3, FIX_1_501321110);        /*  c1+c3-c5-c7 */
     tmp0 += z1 + z2;
     tmp3 += z1 + z3;
 
-    z1 = MULTIPLY(tmp1 + tmp2, - FIX_2_562915447); /* sqrt(2) * (-c1-c3) */
-    tmp1 = MULTIPLY(tmp1, FIX_2_053119869); /* sqrt(2) * ( c1+c3-c5+c7) */
-    tmp2 = MULTIPLY(tmp2, FIX_3_072711026); /* sqrt(2) * ( c1+c3+c5-c7) */
+    z1 = MULTIPLY(tmp1 + tmp2, - FIX_2_562915447); /* -c1-c3 */
+    tmp1 = MULTIPLY(tmp1, FIX_2_053119869);        /*  c1+c3-c5+c7 */
+    tmp2 = MULTIPLY(tmp2, FIX_3_072711026);        /*  c1+c3+c5-c7 */
     tmp1 += z1 + z3;
     tmp2 += z1 + z2;
 
@@ -2948,6 +2957,7 @@ jpeg_idct_16x8 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
   /* Pass 2: process 8 rows from work array, store into output array.
    * 16-point IDCT kernel, cK represents sqrt(2) * cos(K*pi/32).
    */
+
   wsptr = workspace;
   for (ctr = 0; ctr < 8; ctr++) {
     outptr = output_buf[ctr] + output_col;
@@ -3109,6 +3119,7 @@ jpeg_idct_14x7 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
   /* Pass 1: process columns from input, store into work array.
    * 7-point IDCT kernel, cK represents sqrt(2) * cos(K*pi/14).
    */
+
   inptr = coef_block;
   quantptr = (ISLOW_MULT_TYPE *) compptr->dct_table;
   wsptr = workspace;
@@ -3164,6 +3175,7 @@ jpeg_idct_14x7 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
   /* Pass 2: process 7 rows from work array, store into output array.
    * 14-point IDCT kernel, cK represents sqrt(2) * cos(K*pi/28).
    */
+
   wsptr = workspace;
   for (ctr = 0; ctr < 7; ctr++) {
     outptr = output_buf[ctr] + output_col;
@@ -3304,6 +3316,7 @@ jpeg_idct_12x6 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
   /* Pass 1: process columns from input, store into work array.
    * 6-point IDCT kernel, cK represents sqrt(2) * cos(K*pi/12).
    */
+
   inptr = coef_block;
   quantptr = (ISLOW_MULT_TYPE *) compptr->dct_table;
   wsptr = workspace;
@@ -3346,6 +3359,7 @@ jpeg_idct_12x6 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
   /* Pass 2: process 6 rows from work array, store into output array.
    * 12-point IDCT kernel, cK represents sqrt(2) * cos(K*pi/24).
    */
+
   wsptr = workspace;
   for (ctr = 0; ctr < 6; ctr++) {
     outptr = output_buf[ctr] + output_col;
@@ -3480,6 +3494,7 @@ jpeg_idct_10x5 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
   /* Pass 1: process columns from input, store into work array.
    * 5-point IDCT kernel, cK represents sqrt(2) * cos(K*pi/10).
    */
+
   inptr = coef_block;
   quantptr = (ISLOW_MULT_TYPE *) compptr->dct_table;
   wsptr = workspace;
@@ -3520,6 +3535,7 @@ jpeg_idct_10x5 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
   /* Pass 2: process 5 rows from work array, store into output array.
    * 10-point IDCT kernel, cK represents sqrt(2) * cos(K*pi/20).
    */
+
   wsptr = workspace;
   for (ctr = 0; ctr < 5; ctr++) {
     outptr = output_buf[ctr] + output_col;
@@ -3639,8 +3655,10 @@ jpeg_idct_8x4 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
   SHIFT_TEMPS
 
   /* Pass 1: process columns from input, store into work array.
-   * 4-point IDCT kernel, cK represents sqrt(2) * cos(K*pi/16).
+   * 4-point IDCT kernel,
+   * cK represents sqrt(2) * cos(K*pi/16) [refers to 8-point IDCT].
    */
+
   inptr = coef_block;
   quantptr = (ISLOW_MULT_TYPE *) compptr->dct_table;
   wsptr = workspace;
@@ -3675,23 +3693,26 @@ jpeg_idct_8x4 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
     wsptr[8*2] = (int) (tmp12 - tmp2);
   }
 
-  /* Pass 2: process rows from work array, store into output array. */
-  /* Note that we must descale the results by a factor of 8 == 2**3, */
-  /* and also undo the PASS1_BITS scaling. */
+  /* Pass 2: process rows from work array, store into output array.
+   * Note that we must descale the results by a factor of 8 == 2**3,
+   * and also undo the PASS1_BITS scaling.
+   * 8-point IDCT kernel, cK represents sqrt(2) * cos(K*pi/16).
+   */
 
   wsptr = workspace;
   for (ctr = 0; ctr < 4; ctr++) {
     outptr = output_buf[ctr] + output_col;
 
-    /* Even part: reverse the even part of the forward DCT. */
-    /* The rotator is sqrt(2)*c(-6). */
+    /* Even part: reverse the even part of the forward DCT.
+     * The rotator is c(-6).
+     */
 
     z2 = (INT32) wsptr[2];
     z3 = (INT32) wsptr[6];
 
-    z1 = MULTIPLY(z2 + z3, FIX_0_541196100);
-    tmp2 = z1 + MULTIPLY(z2, FIX_0_765366865);
-    tmp3 = z1 - MULTIPLY(z3, FIX_1_847759065);
+    z1 = MULTIPLY(z2 + z3, FIX_0_541196100);       /* c6 */
+    tmp2 = z1 + MULTIPLY(z2, FIX_0_765366865);     /* c2-c6 */
+    tmp3 = z1 - MULTIPLY(z3, FIX_1_847759065);     /* c2+c6 */
 
     /* Add fudge factor here for final descale. */
     z2 = (INT32) wsptr[0] + (ONE << (PASS1_BITS+2));
@@ -3717,21 +3738,21 @@ jpeg_idct_8x4 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
     z2 = tmp0 + tmp2;
     z3 = tmp1 + tmp3;
 
-    z1 = MULTIPLY(z2 + z3, FIX_1_175875602); /* sqrt(2) * c3 */
-    z2 = MULTIPLY(z2, - FIX_1_961570560); /* sqrt(2) * (-c3-c5) */
-    z3 = MULTIPLY(z3, - FIX_0_390180644); /* sqrt(2) * (c5-c3) */
+    z1 = MULTIPLY(z2 + z3, FIX_1_175875602);       /*  c3 */
+    z2 = MULTIPLY(z2, - FIX_1_961570560);          /* -c3-c5 */
+    z3 = MULTIPLY(z3, - FIX_0_390180644);          /* -c3+c5 */
     z2 += z1;
     z3 += z1;
 
-    z1 = MULTIPLY(tmp0 + tmp3, - FIX_0_899976223); /* sqrt(2) * (c7-c3) */
-    tmp0 = MULTIPLY(tmp0, FIX_0_298631336); /* sqrt(2) * (-c1+c3+c5-c7) */
-    tmp3 = MULTIPLY(tmp3, FIX_1_501321110); /* sqrt(2) * ( c1+c3-c5-c7) */
+    z1 = MULTIPLY(tmp0 + tmp3, - FIX_0_899976223); /* -c3+c7 */
+    tmp0 = MULTIPLY(tmp0, FIX_0_298631336);        /* -c1+c3+c5-c7 */
+    tmp3 = MULTIPLY(tmp3, FIX_1_501321110);        /*  c1+c3-c5-c7 */
     tmp0 += z1 + z2;
     tmp3 += z1 + z3;
 
-    z1 = MULTIPLY(tmp1 + tmp2, - FIX_2_562915447); /* sqrt(2) * (-c1-c3) */
-    tmp1 = MULTIPLY(tmp1, FIX_2_053119869); /* sqrt(2) * ( c1+c3-c5+c7) */
-    tmp2 = MULTIPLY(tmp2, FIX_3_072711026); /* sqrt(2) * ( c1+c3+c5-c7) */
+    z1 = MULTIPLY(tmp1 + tmp2, - FIX_2_562915447); /* -c1-c3 */
+    tmp1 = MULTIPLY(tmp1, FIX_2_053119869);        /*  c1+c3-c5+c7 */
+    tmp2 = MULTIPLY(tmp2, FIX_3_072711026);        /*  c1+c3+c5-c7 */
     tmp1 += z1 + z3;
     tmp2 += z1 + z2;
 
@@ -3793,6 +3814,7 @@ jpeg_idct_6x3 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
   /* Pass 1: process columns from input, store into work array.
    * 3-point IDCT kernel, cK represents sqrt(2) * cos(K*pi/6).
    */
+
   inptr = coef_block;
   quantptr = (ISLOW_MULT_TYPE *) compptr->dct_table;
   wsptr = workspace;
@@ -3823,6 +3845,7 @@ jpeg_idct_6x3 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
   /* Pass 2: process 3 rows from work array, store into output array.
    * 6-point IDCT kernel, cK represents sqrt(2) * cos(K*pi/12).
    */
+
   wsptr = workspace;
   for (ctr = 0; ctr < 3; ctr++) {
     outptr = output_buf[ctr] + output_col;
@@ -3924,6 +3947,7 @@ jpeg_idct_4x2 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
    * 4-point IDCT kernel,
    * cK represents sqrt(2) * cos(K*pi/16) [refers to 8-point IDCT].
    */
+
   wsptr = workspace;
   for (ctr = 0; ctr < 2; ctr++) {
     outptr = output_buf[ctr] + output_col;
@@ -3979,7 +4003,7 @@ jpeg_idct_2x1 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
 	       JCOEFPTR coef_block,
 	       JSAMPARRAY output_buf, JDIMENSION output_col)
 {
-  INT32 tmp0, tmp10;
+  INT32 tmp0, tmp1;
   ISLOW_MULT_TYPE * quantptr;
   JSAMPROW outptr;
   JSAMPLE *range_limit = IDCT_range_limit(cinfo);
@@ -3994,18 +4018,18 @@ jpeg_idct_2x1 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
 
   /* Even part */
 
-  tmp10 = DEQUANTIZE(coef_block[0], quantptr[0]);
+  tmp0 = DEQUANTIZE(coef_block[0], quantptr[0]);
   /* Add fudge factor here for final descale. */
-  tmp10 += ONE << 2;
+  tmp0 += ONE << 2;
 
   /* Odd part */
 
-  tmp0 = DEQUANTIZE(coef_block[1], quantptr[1]);
+  tmp1 = DEQUANTIZE(coef_block[1], quantptr[1]);
 
   /* Final output stage */
 
-  outptr[0] = range_limit[(int) RIGHT_SHIFT(tmp10 + tmp0, 3) & RANGE_MASK];
-  outptr[1] = range_limit[(int) RIGHT_SHIFT(tmp10 - tmp0, 3) & RANGE_MASK];
+  outptr[0] = range_limit[(int) RIGHT_SHIFT(tmp0 + tmp1, 3) & RANGE_MASK];
+  outptr[1] = range_limit[(int) RIGHT_SHIFT(tmp0 - tmp1, 3) & RANGE_MASK];
 }
 
 
@@ -4036,6 +4060,7 @@ jpeg_idct_8x16 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
   /* Pass 1: process columns from input, store into work array.
    * 16-point IDCT kernel, cK represents sqrt(2) * cos(K*pi/32).
    */
+
   inptr = coef_block;
   quantptr = (ISLOW_MULT_TYPE *) compptr->dct_table;
   wsptr = workspace;
@@ -4135,23 +4160,26 @@ jpeg_idct_8x16 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
     wsptr[8*8]  = (int) RIGHT_SHIFT(tmp27 - tmp13, CONST_BITS-PASS1_BITS);
   }
 
-  /* Pass 2: process rows from work array, store into output array. */
-  /* Note that we must descale the results by a factor of 8 == 2**3, */
-  /* and also undo the PASS1_BITS scaling. */
+  /* Pass 2: process rows from work array, store into output array.
+   * Note that we must descale the results by a factor of 8 == 2**3,
+   * and also undo the PASS1_BITS scaling.
+   * 8-point IDCT kernel, cK represents sqrt(2) * cos(K*pi/16).
+   */
 
   wsptr = workspace;
   for (ctr = 0; ctr < 16; ctr++) {
     outptr = output_buf[ctr] + output_col;
 
-    /* Even part: reverse the even part of the forward DCT. */
-    /* The rotator is sqrt(2)*c(-6). */
+    /* Even part: reverse the even part of the forward DCT.
+     * The rotator is c(-6).
+     */
 
     z2 = (INT32) wsptr[2];
     z3 = (INT32) wsptr[6];
 
-    z1 = MULTIPLY(z2 + z3, FIX_0_541196100);
-    tmp2 = z1 + MULTIPLY(z2, FIX_0_765366865);
-    tmp3 = z1 - MULTIPLY(z3, FIX_1_847759065);
+    z1 = MULTIPLY(z2 + z3, FIX_0_541196100);       /* c6 */
+    tmp2 = z1 + MULTIPLY(z2, FIX_0_765366865);     /* c2-c6 */
+    tmp3 = z1 - MULTIPLY(z3, FIX_1_847759065);     /* c2+c6 */
 
     /* Add fudge factor here for final descale. */
     z2 = (INT32) wsptr[0] + (ONE << (PASS1_BITS+2));
@@ -4177,21 +4205,21 @@ jpeg_idct_8x16 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
     z2 = tmp0 + tmp2;
     z3 = tmp1 + tmp3;
 
-    z1 = MULTIPLY(z2 + z3, FIX_1_175875602); /* sqrt(2) * c3 */
-    z2 = MULTIPLY(z2, - FIX_1_961570560); /* sqrt(2) * (-c3-c5) */
-    z3 = MULTIPLY(z3, - FIX_0_390180644); /* sqrt(2) * (c5-c3) */
+    z1 = MULTIPLY(z2 + z3, FIX_1_175875602);       /*  c3 */
+    z2 = MULTIPLY(z2, - FIX_1_961570560);          /* -c3-c5 */
+    z3 = MULTIPLY(z3, - FIX_0_390180644);          /* -c3+c5 */
     z2 += z1;
     z3 += z1;
 
-    z1 = MULTIPLY(tmp0 + tmp3, - FIX_0_899976223); /* sqrt(2) * (c7-c3) */
-    tmp0 = MULTIPLY(tmp0, FIX_0_298631336); /* sqrt(2) * (-c1+c3+c5-c7) */
-    tmp3 = MULTIPLY(tmp3, FIX_1_501321110); /* sqrt(2) * ( c1+c3-c5-c7) */
+    z1 = MULTIPLY(tmp0 + tmp3, - FIX_0_899976223); /* -c3+c7 */
+    tmp0 = MULTIPLY(tmp0, FIX_0_298631336);        /* -c1+c3+c5-c7 */
+    tmp3 = MULTIPLY(tmp3, FIX_1_501321110);        /*  c1+c3-c5-c7 */
     tmp0 += z1 + z2;
     tmp3 += z1 + z3;
 
-    z1 = MULTIPLY(tmp1 + tmp2, - FIX_2_562915447); /* sqrt(2) * (-c1-c3) */
-    tmp1 = MULTIPLY(tmp1, FIX_2_053119869); /* sqrt(2) * ( c1+c3-c5+c7) */
-    tmp2 = MULTIPLY(tmp2, FIX_3_072711026); /* sqrt(2) * ( c1+c3+c5-c7) */
+    z1 = MULTIPLY(tmp1 + tmp2, - FIX_2_562915447); /* -c1-c3 */
+    tmp1 = MULTIPLY(tmp1, FIX_2_053119869);        /*  c1+c3-c5+c7 */
+    tmp2 = MULTIPLY(tmp2, FIX_3_072711026);        /*  c1+c3+c5-c7 */
     tmp1 += z1 + z3;
     tmp2 += z1 + z2;
 
@@ -4254,6 +4282,7 @@ jpeg_idct_7x14 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
   /* Pass 1: process columns from input, store into work array.
    * 14-point IDCT kernel, cK represents sqrt(2) * cos(K*pi/28).
    */
+
   inptr = coef_block;
   quantptr = (ISLOW_MULT_TYPE *) compptr->dct_table;
   wsptr = workspace;
@@ -4341,6 +4370,7 @@ jpeg_idct_7x14 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
   /* Pass 2: process 14 rows from work array, store into output array.
    * 7-point IDCT kernel, cK represents sqrt(2) * cos(K*pi/14).
    */
+
   wsptr = workspace;
   for (ctr = 0; ctr < 14; ctr++) {
     outptr = output_buf[ctr] + output_col;
@@ -4437,6 +4467,7 @@ jpeg_idct_6x12 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
   /* Pass 1: process columns from input, store into work array.
    * 12-point IDCT kernel, cK represents sqrt(2) * cos(K*pi/24).
    */
+
   inptr = coef_block;
   quantptr = (ISLOW_MULT_TYPE *) compptr->dct_table;
   wsptr = workspace;
@@ -4520,6 +4551,7 @@ jpeg_idct_6x12 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
   /* Pass 2: process 12 rows from work array, store into output array.
    * 6-point IDCT kernel, cK represents sqrt(2) * cos(K*pi/12).
    */
+
   wsptr = workspace;
   for (ctr = 0; ctr < 12; ctr++) {
     outptr = output_buf[ctr] + output_col;
@@ -4601,6 +4633,7 @@ jpeg_idct_5x10 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
   /* Pass 1: process columns from input, store into work array.
    * 10-point IDCT kernel, cK represents sqrt(2) * cos(K*pi/20).
    */
+
   inptr = coef_block;
   quantptr = (ISLOW_MULT_TYPE *) compptr->dct_table;
   wsptr = workspace;
@@ -4676,6 +4709,7 @@ jpeg_idct_5x10 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
   /* Pass 2: process 10 rows from work array, store into output array.
    * 5-point IDCT kernel, cK represents sqrt(2) * cos(K*pi/10).
    */
+
   wsptr = workspace;
   for (ctr = 0; ctr < 10; ctr++) {
     outptr = output_buf[ctr] + output_col;
@@ -4750,9 +4784,11 @@ jpeg_idct_4x8 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
   int workspace[4*8];	/* buffers data between passes */
   SHIFT_TEMPS
 
-  /* Pass 1: process columns from input, store into work array. */
-  /* Note results are scaled up by sqrt(8) compared to a true IDCT; */
-  /* furthermore, we scale the results by 2**PASS1_BITS. */
+  /* Pass 1: process columns from input, store into work array.
+   * Note results are scaled up by sqrt(8) compared to a true IDCT;
+   * furthermore, we scale the results by 2**PASS1_BITS.
+   * 8-point IDCT kernel, cK represents sqrt(2) * cos(K*pi/16).
+   */
 
   inptr = coef_block;
   quantptr = (ISLOW_MULT_TYPE *) compptr->dct_table;
@@ -4789,15 +4825,16 @@ jpeg_idct_4x8 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
       continue;
     }
 
-    /* Even part: reverse the even part of the forward DCT. */
-    /* The rotator is sqrt(2)*c(-6). */
+    /* Even part: reverse the even part of the forward DCT.
+     * The rotator is c(-6).
+     */
 
     z2 = DEQUANTIZE(inptr[DCTSIZE*2], quantptr[DCTSIZE*2]);
     z3 = DEQUANTIZE(inptr[DCTSIZE*6], quantptr[DCTSIZE*6]);
 
-    z1 = MULTIPLY(z2 + z3, FIX_0_541196100);
-    tmp2 = z1 + MULTIPLY(z2, FIX_0_765366865);
-    tmp3 = z1 - MULTIPLY(z3, FIX_1_847759065);
+    z1 = MULTIPLY(z2 + z3, FIX_0_541196100);       /* c6 */
+    tmp2 = z1 + MULTIPLY(z2, FIX_0_765366865);     /* c2-c6 */
+    tmp3 = z1 - MULTIPLY(z3, FIX_1_847759065);     /* c2+c6 */
 
     z2 = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]);
     z3 = DEQUANTIZE(inptr[DCTSIZE*4], quantptr[DCTSIZE*4]);
@@ -4826,21 +4863,21 @@ jpeg_idct_4x8 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
     z2 = tmp0 + tmp2;
     z3 = tmp1 + tmp3;
 
-    z1 = MULTIPLY(z2 + z3, FIX_1_175875602); /* sqrt(2) * c3 */
-    z2 = MULTIPLY(z2, - FIX_1_961570560); /* sqrt(2) * (-c3-c5) */
-    z3 = MULTIPLY(z3, - FIX_0_390180644); /* sqrt(2) * (c5-c3) */
+    z1 = MULTIPLY(z2 + z3, FIX_1_175875602);       /*  c3 */
+    z2 = MULTIPLY(z2, - FIX_1_961570560);          /* -c3-c5 */
+    z3 = MULTIPLY(z3, - FIX_0_390180644);          /* -c3+c5 */
     z2 += z1;
     z3 += z1;
 
-    z1 = MULTIPLY(tmp0 + tmp3, - FIX_0_899976223); /* sqrt(2) * (c7-c3) */
-    tmp0 = MULTIPLY(tmp0, FIX_0_298631336); /* sqrt(2) * (-c1+c3+c5-c7) */
-    tmp3 = MULTIPLY(tmp3, FIX_1_501321110); /* sqrt(2) * ( c1+c3-c5-c7) */
+    z1 = MULTIPLY(tmp0 + tmp3, - FIX_0_899976223); /* -c3+c7 */
+    tmp0 = MULTIPLY(tmp0, FIX_0_298631336);        /* -c1+c3+c5-c7 */
+    tmp3 = MULTIPLY(tmp3, FIX_1_501321110);        /*  c1+c3-c5-c7 */
     tmp0 += z1 + z2;
     tmp3 += z1 + z3;
 
-    z1 = MULTIPLY(tmp1 + tmp2, - FIX_2_562915447); /* sqrt(2) * (-c1-c3) */
-    tmp1 = MULTIPLY(tmp1, FIX_2_053119869); /* sqrt(2) * ( c1+c3-c5+c7) */
-    tmp2 = MULTIPLY(tmp2, FIX_3_072711026); /* sqrt(2) * ( c1+c3+c5-c7) */
+    z1 = MULTIPLY(tmp1 + tmp2, - FIX_2_562915447); /* -c1-c3 */
+    tmp1 = MULTIPLY(tmp1, FIX_2_053119869);        /*  c1+c3-c5+c7 */
+    tmp2 = MULTIPLY(tmp2, FIX_3_072711026);        /*  c1+c3+c5-c7 */
     tmp1 += z1 + z3;
     tmp2 += z1 + z2;
 
@@ -4861,8 +4898,10 @@ jpeg_idct_4x8 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
   }
 
   /* Pass 2: process 8 rows from work array, store into output array.
-   * 4-point IDCT kernel, cK represents sqrt(2) * cos(K*pi/16).
+   * 4-point IDCT kernel,
+   * cK represents sqrt(2) * cos(K*pi/16) [refers to 8-point IDCT].
    */
+
   wsptr = workspace;
   for (ctr = 0; ctr < 8; ctr++) {
     outptr = output_buf[ctr] + output_col;
@@ -4932,6 +4971,7 @@ jpeg_idct_3x6 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
   /* Pass 1: process columns from input, store into work array.
    * 6-point IDCT kernel, cK represents sqrt(2) * cos(K*pi/12).
    */
+
   inptr = coef_block;
   quantptr = (ISLOW_MULT_TYPE *) compptr->dct_table;
   wsptr = workspace;
@@ -4974,6 +5014,7 @@ jpeg_idct_3x6 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
   /* Pass 2: process 6 rows from work array, store into output array.
    * 3-point IDCT kernel, cK represents sqrt(2) * cos(K*pi/6).
    */
+
   wsptr = workspace;
   for (ctr = 0; ctr < 6; ctr++) {
     outptr = output_buf[ctr] + output_col;
@@ -5037,6 +5078,7 @@ jpeg_idct_2x4 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
    * 4-point IDCT kernel,
    * cK represents sqrt(2) * cos(K*pi/16) [refers to 8-point IDCT].
    */
+
   inptr = coef_block;
   quantptr = (ISLOW_MULT_TYPE *) compptr->dct_table;
   wsptr = workspace;
@@ -5106,7 +5148,7 @@ jpeg_idct_1x2 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
 	       JCOEFPTR coef_block,
 	       JSAMPARRAY output_buf, JDIMENSION output_col)
 {
-  INT32 tmp0, tmp10;
+  INT32 tmp0, tmp1;
   ISLOW_MULT_TYPE * quantptr;
   JSAMPLE *range_limit = IDCT_range_limit(cinfo);
   SHIFT_TEMPS
@@ -5117,19 +5159,19 @@ jpeg_idct_1x2 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
 
   /* Even part */
     
-  tmp10 = DEQUANTIZE(coef_block[DCTSIZE*0], quantptr[DCTSIZE*0]);
+  tmp0 = DEQUANTIZE(coef_block[DCTSIZE*0], quantptr[DCTSIZE*0]);
   /* Add fudge factor here for final descale. */
-  tmp10 += ONE << 2;
+  tmp0 += ONE << 2;
 
   /* Odd part */
 
-  tmp0 = DEQUANTIZE(coef_block[DCTSIZE*1], quantptr[DCTSIZE*1]);
+  tmp1 = DEQUANTIZE(coef_block[DCTSIZE*1], quantptr[DCTSIZE*1]);
 
   /* Final output stage */
 
-  output_buf[0][output_col] = range_limit[(int) RIGHT_SHIFT(tmp10 + tmp0, 3)
+  output_buf[0][output_col] = range_limit[(int) RIGHT_SHIFT(tmp0 + tmp1, 3)
 					  & RANGE_MASK];
-  output_buf[1][output_col] = range_limit[(int) RIGHT_SHIFT(tmp10 - tmp0, 3)
+  output_buf[1][output_col] = range_limit[(int) RIGHT_SHIFT(tmp0 - tmp1, 3)
 					  & RANGE_MASK];
 }
 

jmemmgr.c

@@ -2,7 +2,7 @@
  * jmemmgr.c
  *
  * Copyright (C) 1991-1997, Thomas G. Lane.
- * Modified 2011 by Guido Vollbeding.
+ * Modified 2011-2012 by Guido Vollbeding.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
@@ -214,7 +214,7 @@ print_mem_stats (j_common_ptr cinfo, int pool_id)
 #endif /* MEM_STATS */
 
 
-LOCAL(void)
+LOCAL(noreturn_t)
 out_of_memory (j_common_ptr cinfo, int which)
 /* Report an out-of-memory error and stop execution */
 /* If we compiled MEM_STATS support, report alloc requests before dying */

jmorecfg.h

@@ -2,7 +2,7 @@
  * jmorecfg.h
  *
  * Copyright (C) 1991-1997, Thomas G. Lane.
- * Modified 1997-2011 by Guido Vollbeding.
+ * Modified 1997-2013 by Guido Vollbeding.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
@@ -15,13 +15,22 @@
 /*
  * Define BITS_IN_JSAMPLE as either
  *   8   for 8-bit sample values (the usual setting)
+ *   9   for 9-bit sample values
+ *   10  for 10-bit sample values
+ *   11  for 11-bit sample values
  *   12  for 12-bit sample values
- * Only 8 and 12 are legal data precisions for lossy JPEG according to the
- * JPEG standard, and the IJG code does not support anything else!
- * We do not support run-time selection of data precision, sorry.
+ * Only 8, 9, 10, 11, and 12 bits sample data precision are supported for
+ * full-feature DCT processing.  Further depths up to 16-bit may be added
+ * later for the lossless modes of operation.
+ * Run-time selection and conversion of data precision will be added later
+ * and are currently not supported, sorry.
+ * Exception:  The transcoding part (jpegtran) supports all settings in a
+ * single instance, since it operates on the level of DCT coefficients and
+ * not sample values.  The DCT coefficients are of the same type (16 bits)
+ * in all cases (see below).
  */
 
-#define BITS_IN_JSAMPLE  8	/* use 8 or 12 */
+#define BITS_IN_JSAMPLE  8	/* use 8, 9, 10, 11, or 12 */
 
 
 /*
@@ -77,6 +86,48 @@ typedef char JSAMPLE;
 #endif /* BITS_IN_JSAMPLE == 8 */
 
 
+#if BITS_IN_JSAMPLE == 9
+/* JSAMPLE should be the smallest type that will hold the values 0..511.
+ * On nearly all machines "short" will do nicely.
+ */
+
+typedef short JSAMPLE;
+#define GETJSAMPLE(value)  ((int) (value))
+
+#define MAXJSAMPLE	511
+#define CENTERJSAMPLE	256
+
+#endif /* BITS_IN_JSAMPLE == 9 */
+
+
+#if BITS_IN_JSAMPLE == 10
+/* JSAMPLE should be the smallest type that will hold the values 0..1023.
+ * On nearly all machines "short" will do nicely.
+ */
+
+typedef short JSAMPLE;
+#define GETJSAMPLE(value)  ((int) (value))
+
+#define MAXJSAMPLE	1023
+#define CENTERJSAMPLE	512
+
+#endif /* BITS_IN_JSAMPLE == 10 */
+
+
+#if BITS_IN_JSAMPLE == 11
+/* JSAMPLE should be the smallest type that will hold the values 0..2047.
+ * On nearly all machines "short" will do nicely.
+ */
+
+typedef short JSAMPLE;
+#define GETJSAMPLE(value)  ((int) (value))
+
+#define MAXJSAMPLE	2047
+#define CENTERJSAMPLE	1024
+
+#endif /* BITS_IN_JSAMPLE == 11 */
+
+
 #if BITS_IN_JSAMPLE == 12
 /* JSAMPLE should be the smallest type that will hold the values 0..4095.
  * On nearly all machines "short" will do nicely.
@@ -210,6 +261,26 @@ typedef unsigned int JDIMENSION;
 #endif
 
 
+/* The noreturn type identifier is used to declare functions
+ * which cannot return.
+ * Compilers can thus create more optimized code and perform
+ * better checks for warnings and errors.
+ * Static analyzer tools can make improved inferences about
+ * execution paths and are prevented from giving false alerts.
+ *
+ * Unfortunately, the proposed specifications of corresponding
+ * extensions in the Dec 2011 ISO C standard revision (C11),
+ * GCC, MSVC, etc. are not viable.
+ * Thus we introduce a user defined type to declare noreturn
+ * functions at least for clarity.  A proper compiler would
+ * have a suitable noreturn type to match in place of void.
+ */
+
+#ifndef HAVE_NORETURN_T
+typedef void noreturn_t;
+#endif
+
+
 /* Here is the pseudo-keyword for declaring pointers that must be "far"
  * on 80x86 machines.  Most of the specialized coding for 80x86 is handled
  * by just saying "FAR *" where such a pointer is needed.  In a few places
@@ -233,14 +304,19 @@ typedef unsigned int JDIMENSION;
  */
 
 #ifndef HAVE_BOOLEAN
+#if defined FALSE || defined TRUE || defined QGLOBAL_H
+/* Qt3 defines FALSE and TRUE as "const" variables in qglobal.h */
 typedef int boolean;
-#endif
 #ifndef FALSE			/* in case these macros already exist */
 #define FALSE	0		/* values of boolean */
 #endif
 #ifndef TRUE
 #define TRUE	1
 #endif
+#else
+typedef enum { FALSE = 0, TRUE = 1 } boolean;
+#endif
+#endif
 
 
 /*
@@ -278,11 +354,12 @@ typedef int boolean;
 #define C_PROGRESSIVE_SUPPORTED	    /* Progressive JPEG? (Requires MULTISCAN)*/
 #define DCT_SCALING_SUPPORTED	    /* Input rescaling via DCT? (Requires DCT_ISLOW)*/
 #define ENTROPY_OPT_SUPPORTED	    /* Optimization of entropy coding parms? */
-/* Note: if you selected 12-bit data precision, it is dangerous to turn off
- * ENTROPY_OPT_SUPPORTED.  The standard Huffman tables are only good for 8-bit
- * precision, so jchuff.c normally uses entropy optimization to compute
- * usable tables for higher precision.  If you don't want to do optimization,
- * you'll have to supply different default Huffman tables.
+/* Note: if you selected more than 8-bit data precision, it is dangerous to
+ * turn off ENTROPY_OPT_SUPPORTED.  The standard Huffman tables are only
+ * good for 8-bit precision, so arithmetic coding is recommended for higher
+ * precision.  The Huffman encoder normally uses entropy optimization to
+ * compute usable tables for higher precision.  Otherwise, you'll have to
+ * supply different default Huffman tables.
  * The exact same statements apply for progressive JPEG: the default tables
  * don't work for progressive mode.  (This may get fixed, however.)
  */
@@ -293,7 +370,7 @@ typedef int boolean;
 #define D_ARITH_CODING_SUPPORTED    /* Arithmetic coding back end? */
 #define D_MULTISCAN_FILES_SUPPORTED /* Multiple-scan JPEG files? */
 #define D_PROGRESSIVE_SUPPORTED	    /* Progressive JPEG? (Requires MULTISCAN)*/
-#define IDCT_SCALING_SUPPORTED	    /* Output rescaling via IDCT? */
+#define IDCT_SCALING_SUPPORTED	    /* Output rescaling via IDCT? (Requires DCT_ISLOW)*/
 #define SAVE_MARKERS_SUPPORTED	    /* jpeg_save_markers() needed? */
 #define BLOCK_SMOOTHING_SUPPORTED   /* Block smoothing? (Progressive only) */
 #undef  UPSAMPLE_SCALING_SUPPORTED  /* Output rescaling at upsample stage? */

jpegint.h

@@ -2,7 +2,7 @@
  * jpegint.h
  *
  * Copyright (C) 1991-1997, Thomas G. Lane.
- * Modified 1997-2011 by Guido Vollbeding.
+ * Modified 1997-2013 by Guido Vollbeding.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
@@ -211,8 +211,8 @@ struct jpeg_marker_reader {
 /* Entropy decoding */
 struct jpeg_entropy_decoder {
   JMETHOD(void, start_pass, (j_decompress_ptr cinfo));
-  JMETHOD(boolean, decode_mcu, (j_decompress_ptr cinfo,
-				JBLOCKROW *MCU_data));
+  JMETHOD(boolean, decode_mcu, (j_decompress_ptr cinfo, JBLOCKROW *MCU_data));
+  JMETHOD(void, finish_pass, (j_decompress_ptr cinfo));
 };
 
 /* Inverse DCT (also performs dequantization) */

jpeglib.h

@@ -2,7 +2,7 @@
  * jpeglib.h
  *
  * Copyright (C) 1991-1998, Thomas G. Lane.
- * Modified 2002-2011 by Guido Vollbeding.
+ * Modified 2002-2013 by Guido Vollbeding.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
@@ -34,17 +34,17 @@ extern "C" {
 #endif
 
 /* Version IDs for the JPEG library.
- * Might be useful for tests like "#if JPEG_LIB_VERSION >= 80".
+ * Might be useful for tests like "#if JPEG_LIB_VERSION >= 90".
  */
 
-#define JPEG_LIB_VERSION        80	/* Compatibility version 8.0 */
-#define JPEG_LIB_VERSION_MAJOR  8
-#define JPEG_LIB_VERSION_MINOR  4
+#define JPEG_LIB_VERSION        90	/* Compatibility version 9.0 */
+#define JPEG_LIB_VERSION_MAJOR  9
+#define JPEG_LIB_VERSION_MINOR  1
 
 
 /* Various constants determining the sizes of things.
- * All of these are specified by the JPEG standard, so don't change them
- * if you want to be compatible.
+ * All of these are specified by the JPEG standard,
+ * so don't change them if you want to be compatible.
  */
 
 #define DCTSIZE		    8	/* The basic DCT block is 8x8 coefficients */
@@ -157,16 +157,21 @@ typedef struct {
   /* The downsampled dimensions are the component's actual, unpadded number
    * of samples at the main buffer (preprocessing/compression interface);
    * DCT scaling is included, so
-   * downsampled_width = ceil(image_width * Hi/Hmax * DCT_h_scaled_size/DCTSIZE)
+   * downsampled_width =
+   *   ceil(image_width * Hi/Hmax * DCT_h_scaled_size/block_size)
    * and similarly for height.
    */
   JDIMENSION downsampled_width;	 /* actual width in samples */
   JDIMENSION downsampled_height; /* actual height in samples */
-  /* This flag is used only for decompression.  In cases where some of the
-   * components will be ignored (eg grayscale output from YCbCr image),
-   * we can skip most computations for the unused components.
+  /* For decompression, in cases where some of the components will be
+   * ignored (eg grayscale output from YCbCr image), we can skip most
+   * computations for the unused components.
+   * For compression, some of the components will need further quantization
+   * scale by factor of 2 after DCT (eg BG_YCC output from normal RGB input).
+   * The field is first set TRUE for decompression, FALSE for compression
+   * in initial_setup, and then adapted in color conversion setup.
    */
-  boolean component_needed;	/* do we need the value of this component? */
+  boolean component_needed;
 
   /* These values are computed before starting a scan of the component. */
   /* The decompressor output side may not use these variables. */
@@ -215,12 +220,21 @@ struct jpeg_marker_struct {
 typedef enum {
 	JCS_UNKNOWN,		/* error/unspecified */
 	JCS_GRAYSCALE,		/* monochrome */
-	JCS_RGB,		/* red/green/blue */
-	JCS_YCbCr,		/* Y/Cb/Cr (also known as YUV) */
+	JCS_RGB,		/* red/green/blue, standard RGB (sRGB) */
+	JCS_YCbCr,		/* Y/Cb/Cr (also known as YUV), standard YCC */
 	JCS_CMYK,		/* C/M/Y/K */
-	JCS_YCCK		/* Y/Cb/Cr/K */
+	JCS_YCCK,		/* Y/Cb/Cr/K */
+	JCS_BG_RGB,		/* big gamut red/green/blue, bg-sRGB */
+	JCS_BG_YCC		/* big gamut Y/Cb/Cr, bg-sYCC */
 } J_COLOR_SPACE;
 
+/* Supported color transforms. */
+
+typedef enum {
+	JCT_NONE           = 0,
+	JCT_SUBTRACT_GREEN = 1
+} J_COLOR_TRANSFORM;
+
 /* DCT/IDCT algorithm options. */
 
 typedef enum {
@@ -370,6 +384,9 @@ struct jpeg_compress_struct {
   UINT16 Y_density;		/* Vertical pixel density */
   boolean write_Adobe_marker;	/* should an Adobe marker be written? */
 
+  J_COLOR_TRANSFORM color_transform;
+  /* Color transform identifier, writes LSE marker if nonzero */
+
   /* State variable: index of next scanline to be written to
    * jpeg_write_scanlines().  Application may use this to control its
    * processing loop, e.g., "while (next_scanline < image_height)".
@@ -589,6 +606,9 @@ struct jpeg_decompress_struct {
   boolean saw_Adobe_marker;	/* TRUE iff an Adobe APP14 marker was found */
   UINT8 Adobe_transform;	/* Color transform code from Adobe marker */
 
+  J_COLOR_TRANSFORM color_transform;
+  /* Color transform identifier derived from LSE marker, otherwise zero */
+
   boolean CCIR601_sampling;	/* TRUE=first samples are cosited */
 
   /* Aside from the specific data retained from APPn markers known to the
@@ -681,7 +701,7 @@ struct jpeg_decompress_struct {
 
 struct jpeg_error_mgr {
   /* Error exit handler: does not return to caller */
-  JMETHOD(void, error_exit, (j_common_ptr cinfo));
+  JMETHOD(noreturn_t, error_exit, (j_common_ptr cinfo));
   /* Conditionally emit a trace or warning message */
   JMETHOD(void, emit_message, (j_common_ptr cinfo, int msg_level));
   /* Routine that actually outputs a trace or error message */

jpegtran.1

@@ -1,4 +1,4 @@
-.TH JPEGTRAN 1 "28 December 2009"
+.TH JPEGTRAN 1 "13 September 2013"
 .SH NAME
 jpegtran \- lossless transformation of JPEG files
 .SH SYNOPSIS
@@ -156,15 +156,23 @@ image region but losslessly preserves what is inside.  Like the rotate and
 flip transforms, lossless crop is restricted by the current JPEG format: the
 upper left corner of the selected region must fall on an iMCU boundary.  If
 this does not hold for the given crop parameters, we silently move the upper
-left corner up and/or left to make it so, simultaneously increasing the region
-dimensions to keep the lower right crop corner unchanged.  (Thus, the output
-image covers at least the requested region, but may cover more.)
+left corner up and/or left to make it so, simultaneously increasing the
+region dimensions to keep the lower right crop corner unchanged.  (Thus, the
+output image covers at least the requested region, but may cover more.)
+The adjustment of the region dimensions may be optionally disabled.
 
 The image can be losslessly cropped by giving the switch:
 .TP
 .B \-crop WxH+X+Y
 Crop to a rectangular subarea of width W, height H starting at point X,Y.
 .PP
+A complementary lossless-wipe option is provided to discard (gray out) data
+inside a given image region while losslessly preserving what is outside:
+.TP
+.B \-wipe WxH+X+Y
+Wipe (gray out) a rectangular subarea of width W, height H starting at point
+X,Y.
+.PP
 Other not-strictly-lossless transformation switches are:
 .TP
 .B \-grayscale

jpegtran.c

@@ -1,7 +1,7 @@
 /*
  * jpegtran.c
  *
- * Copyright (C) 1995-2011, Thomas G. Lane, Guido Vollbeding.
+ * Copyright (C) 1995-2013, Thomas G. Lane, Guido Vollbeding.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
@@ -66,8 +66,8 @@ usage (void)
   fprintf(stderr, "Switches for modifying the image:\n");
 #if TRANSFORMS_SUPPORTED
   fprintf(stderr, "  -crop WxH+X+Y  Crop to a rectangular subarea\n");
-  fprintf(stderr, "  -grayscale     Reduce to grayscale (omit color data)\n");
   fprintf(stderr, "  -flip [horizontal|vertical]  Mirror image (left-right or top-bottom)\n");
+  fprintf(stderr, "  -grayscale     Reduce to grayscale (omit color data)\n");
   fprintf(stderr, "  -perfect       Fail if there is non-transformable edge blocks\n");
   fprintf(stderr, "  -rotate [90|180|270]         Rotate image (degrees clockwise)\n");
 #endif
@@ -76,6 +76,7 @@ usage (void)
   fprintf(stderr, "  -transpose     Transpose image\n");
   fprintf(stderr, "  -transverse    Transverse transpose image\n");
   fprintf(stderr, "  -trim          Drop non-transformable edge blocks\n");
+  fprintf(stderr, "  -wipe WxH+X+Y  Wipe (gray out) a rectangular subarea\n");
 #endif
   fprintf(stderr, "Switches for advanced users:\n");
 #ifdef C_ARITH_CODING_SUPPORTED
@@ -187,7 +188,8 @@ parse_switches (j_compress_ptr cinfo, int argc, char **argv,
 #if TRANSFORMS_SUPPORTED
       if (++argn >= argc)	/* advance to next argument */
 	usage();
-      if (! jtransform_parse_crop_spec(&transformoption, argv[argn])) {
+      if (transformoption.crop /* reject multiple crop/wipe requests */ ||
+	  ! jtransform_parse_crop_spec(&transformoption, argv[argn])) {
 	fprintf(stderr, "%s: bogus -crop argument '%s'\n",
 		progname, argv[argn]);
 	exit(EXIT_FAILURE);
@@ -336,6 +338,21 @@ parse_switches (j_compress_ptr cinfo, int argc, char **argv,
       /* Trim off any partial edge MCUs that the transform can't handle. */
       transformoption.trim = TRUE;
 
+    } else if (keymatch(arg, "wipe", 1)) {
+#if TRANSFORMS_SUPPORTED
+      if (++argn >= argc)	/* advance to next argument */
+	usage();
+      if (transformoption.crop /* reject multiple crop/wipe requests */ ||
+	  ! jtransform_parse_crop_spec(&transformoption, argv[argn])) {
+	fprintf(stderr, "%s: bogus -wipe argument '%s'\n",
+		progname, argv[argn]);
+	exit(EXIT_FAILURE);
+      }
+      select_transform(JXFORM_WIPE);
+#else
+      select_transform(JXFORM_NONE);	/* force an error */
+#endif
+
     } else {
       usage();			/* bogus switch */
     }
@@ -467,7 +484,7 @@ main (int argc, char **argv)
 
   /* Adjust default decompression parameters */
   if (scaleoption != NULL)
-    if (sscanf(scaleoption, "%d/%d",
+    if (sscanf(scaleoption, "%u/%u",
 	&srcinfo.scale_num, &srcinfo.scale_denom) < 1)
       usage();
 

jversion.h

@@ -1,7 +1,7 @@
 /*
  * jversion.h
  *
- * Copyright (C) 1991-2012, Thomas G. Lane, Guido Vollbeding.
+ * Copyright (C) 1991-2014, Thomas G. Lane, Guido Vollbeding.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
@@ -9,6 +9,6 @@
  */
 
 
-#define JVERSION	"8d  15-Jan-2012"
+#define JVERSION	"9a  19-Jan-2014"
 
-#define JCOPYRIGHT	"Copyright (C) 2012, Thomas G. Lane, Guido Vollbeding"
+#define JCOPYRIGHT	"Copyright (C) 2014, Thomas G. Lane, Guido Vollbeding"

libjpeg.map

@@ -1,4 +1,4 @@
-LIBJPEG_8.0 {
+LIBJPEG_9.0 {
   global:
     *;
 };

libjpeg.txt

@@ -1,6 +1,6 @@
 USING THE IJG JPEG LIBRARY
 
-Copyright (C) 1994-2011, Thomas G. Lane, Guido Vollbeding.
+Copyright (C) 1994-2013, Thomas G. Lane, Guido Vollbeding.
 This file is part of the Independent JPEG Group's software.
 For conditions of distribution and use, see the accompanying README file.
 
@@ -95,8 +95,8 @@ use.)  Unsupported ISO options include:
 	* Lossless JPEG
 	* DNL marker
 	* Nonintegral subsampling ratios
-We support both 8- and 12-bit data precision, but this is a compile-time
-choice rather than a run-time choice; hence it is difficult to use both
+We support 8-bit to 12-bit data precision, but this is a compile-time choice
+rather than a run-time choice; hence it is difficult to use different
 precisions in a single application.
 
 By itself, the library handles only interchange JPEG datastreams --- in
@@ -225,7 +225,7 @@ For best results, source data values should have the precision specified by
 BITS_IN_JSAMPLE (normally 8 bits).  For instance, if you choose to compress
 data that's only 6 bits/channel, you should left-justify each value in a
 byte before passing it to the compressor.  If you need to compress data
-that has more than 8 bits/channel, compile with BITS_IN_JSAMPLE = 12.
+that has more than 8 bits/channel, compile with BITS_IN_JSAMPLE = 9 to 12.
 (See "Library compile-time options", later.)
 
 
@@ -876,6 +876,10 @@ jpeg_simple_progression (j_compress_ptr cinfo)
 
 Compression parameters (cinfo fields) include:
 
+boolean arith_code
+	If TRUE, use arithmetic coding.
+	If FALSE, use Huffman coding.
+
 int block_size
 	Set DCT block size.  All N from 1 to 16 are possible.
 	Default is 8 (baseline format).
@@ -916,7 +920,16 @@ J_COLOR_SPACE jpeg_color_space
 int num_components
 	The JPEG color space and corresponding number of components; see
 	"Special color spaces", below, for more info.  We recommend using
-	jpeg_set_color_space() if you want to change these.
+	jpeg_set_colorspace() if you want to change these.
+
+J_COLOR_TRANSFORM color_transform
+	Internal color transform identifier, writes LSE marker if nonzero
+	(requires decoder with inverse color transform support, introduced
+	with IJG JPEG 9).
+	Two values are currently possible: JCT_NONE and JCT_SUBTRACT_GREEN.
+	Set this value for lossless RGB application *before* calling
+	jpeg_set_colorspace(), because entropy table assignment in
+	jpeg_set_colorspace() depends on color_transform.
 
 boolean optimize_coding
 	TRUE causes the compressor to compute optimal Huffman coding tables
@@ -1260,9 +1273,10 @@ Special color spaces
 The JPEG standard itself is "color blind" and doesn't specify any particular
 color space.  It is customary to convert color data to a luminance/chrominance
 color space before compressing, since this permits greater compression.  The
-existing de-facto JPEG file format standards specify YCbCr or grayscale data
-(JFIF), or grayscale, RGB, YCbCr, CMYK, or YCCK (Adobe).  For special
-applications such as multispectral images, other color spaces can be used,
+existing JPEG file interchange format standards specify YCbCr or GRAYSCALE
+data (JFIF version 1), GRAYSCALE, RGB, YCbCr, CMYK, or YCCK (Adobe), or BG_RGB
+or BG_YCC (big gamut color spaces, JFIF version 2).  For special applications
+such as multispectral images, other color spaces can be used,
 but it must be understood that such files will be unportable.
 
 The JPEG library can handle the most common colorspace conversions (namely
@@ -1279,22 +1293,25 @@ jpeg_set_colorspace().  Of course you must select a supported transformation.
 jccolor.c currently supports the following transformations:
 	RGB => YCbCr
 	RGB => GRAYSCALE
+	RGB => BG_YCC
 	YCbCr => GRAYSCALE
+	YCbCr => BG_YCC
 	CMYK => YCCK
 plus the null transforms: GRAYSCALE => GRAYSCALE, RGB => RGB,
-YCbCr => YCbCr, CMYK => CMYK, YCCK => YCCK, and UNKNOWN => UNKNOWN.
+BG_RGB => BG_RGB, YCbCr => YCbCr, BG_YCC => BG_YCC, CMYK => CMYK,
+YCCK => YCCK, and UNKNOWN => UNKNOWN.
 
-The de-facto file format standards (JFIF and Adobe) specify APPn markers that
-indicate the color space of the JPEG file.  It is important to ensure that
-these are written correctly, or omitted if the JPEG file's color space is not
-one of the ones supported by the de-facto standards.  jpeg_set_colorspace()
-will set the compression parameters to include or omit the APPn markers
-properly, so long as it is told the truth about the JPEG color space.
-For example, if you are writing some random 3-component color space without
-conversion, don't try to fake out the library by setting in_color_space and
-jpeg_color_space to JCS_YCbCr; use JCS_UNKNOWN.  You may want to write an
-APPn marker of your own devising to identify the colorspace --- see "Special
-markers", below.
+The file interchange format standards (JFIF and Adobe) specify APPn markers
+that indicate the color space of the JPEG file.  It is important to ensure
+that these are written correctly, or omitted if the JPEG file's color space
+is not one of the ones supported by the interchange standards.
+jpeg_set_colorspace() will set the compression parameters to include or omit
+the APPn markers properly, so long as it is told the truth about the JPEG
+color space.  For example, if you are writing some random 3-component color
+space without conversion, don't try to fake out the library by setting
+in_color_space and jpeg_color_space to JCS_YCbCr; use JCS_UNKNOWN.
+You may want to write an APPn marker of your own devising to identify
+the colorspace --- see "Special markers", below.
 
 When told that the color space is UNKNOWN, the library will default to using
 luminance-quality compression parameters for all color components.  You may
@@ -1312,6 +1329,8 @@ set out_color_space to override this.  Again, you must select a supported
 transformation.  jdcolor.c currently supports
 	YCbCr => RGB
 	YCbCr => GRAYSCALE
+	BG_YCC => RGB
+	BG_YCC => GRAYSCALE
 	RGB => GRAYSCALE
 	GRAYSCALE => RGB
 	YCCK => CMYK
@@ -2572,10 +2591,10 @@ different sizes.  If the image dimensions are not a multiple of the MCU size,
 you must also pad the data correctly (usually, this is done by replicating
 the last column and/or row).  The data must be padded to a multiple of a DCT
 block in each component: that is, each downsampled row must contain a
-multiple of 8 valid samples, and there must be a multiple of 8 sample rows
-for each component.  (For applications such as conversion of digital TV
-images, the standard image size is usually a multiple of the DCT block size,
-so that no padding need actually be done.)
+multiple of block_size valid samples, and there must be a multiple of
+block_size sample rows for each component.  (For applications such as
+conversion of digital TV images, the standard image size is usually a
+multiple of the DCT block size, so that no padding need actually be done.)
 
 The procedure for compression of raw data is basically the same as normal
 compression, except that you call jpeg_write_raw_data() in place of
@@ -2601,22 +2620,22 @@ The scanlines count passed to and returned from jpeg_write_raw_data is
 measured in terms of the component with the largest v_samp_factor.
 
 jpeg_write_raw_data() processes one MCU row per call, which is to say
-v_samp_factor*DCTSIZE sample rows of each component.  The passed num_lines
-value must be at least max_v_samp_factor*DCTSIZE, and the return value will
-be exactly that amount (or possibly some multiple of that amount, in future
-library versions).  This is true even on the last call at the bottom of the
-image; don't forget to pad your data as necessary.
+v_samp_factor*block_size sample rows of each component.  The passed num_lines
+value must be at least max_v_samp_factor*block_size, and the return value
+will be exactly that amount (or possibly some multiple of that amount, in
+future library versions).  This is true even on the last call at the bottom
+of the image; don't forget to pad your data as necessary.
 
 The required dimensions of the supplied data can be computed for each
 component as
-	cinfo->comp_info[i].width_in_blocks*DCTSIZE  samples per row
-	cinfo->comp_info[i].height_in_blocks*DCTSIZE rows in image
+	cinfo->comp_info[i].width_in_blocks*block_size  samples per row
+	cinfo->comp_info[i].height_in_blocks*block_size rows in image
 after jpeg_start_compress() has initialized those fields.  If the valid data
 is smaller than this, it must be padded appropriately.  For some sampling
 factors and image sizes, additional dummy DCT blocks are inserted to make
 the image a multiple of the MCU dimensions.  The library creates such dummy
 blocks itself; it does not read them from your supplied data.  Therefore you
-need never pad by more than DCTSIZE samples.  An example may help here.
+need never pad by more than block_size samples.  An example may help here.
 Assume 2h2v downsampling of YCbCr data, that is
 	cinfo->comp_info[0].h_samp_factor = 2		for Y
 	cinfo->comp_info[0].v_samp_factor = 2
@@ -2658,8 +2677,8 @@ Then call jpeg_read_raw_data() in place of jpeg_read_scanlines().  The
 decompression process is otherwise the same as usual.
 
 jpeg_read_raw_data() returns one MCU row per call, and thus you must pass a
-buffer of at least max_v_samp_factor*DCTSIZE scanlines (scanline counting is
-the same as for raw-data compression).  The buffer you pass must be large
+buffer of at least max_v_samp_factor*block_size scanlines (scanline counting
+is the same as for raw-data compression).  The buffer you pass must be large
 enough to hold the actual data plus padding to DCT-block boundaries.  As with
 compression, any entirely dummy DCT blocks are not processed so you need not
 allocate space for them, but the total scanline count includes them.  The
@@ -2915,10 +2934,10 @@ This does not count any memory allocated by the application, such as a
 buffer to hold the final output image.
 
 The above figures are valid for 8-bit JPEG data precision and a machine with
-32-bit ints.  For 12-bit JPEG data, double the size of the strip buffers and
-quantization pixel buffer.  The "fixed-size" data will be somewhat smaller
-with 16-bit ints, larger with 64-bit ints.  Also, CMYK or other unusual
-color spaces will require different amounts of space.
+32-bit ints.  For 9-bit to 12-bit JPEG data, double the size of the strip
+buffers and quantization pixel buffer.  The "fixed-size" data will be
+somewhat smaller with 16-bit ints, larger with 64-bit ints.  Also, CMYK
+or other unusual color spaces will require different amounts of space.
 
 The full-image coefficient and pixel buffers, if needed at all, do not
 have to be fully RAM resident; you can have the library use temporary
@@ -2940,27 +2959,34 @@ Library compile-time options
 
 A number of compile-time options are available by modifying jmorecfg.h.
 
-The JPEG standard provides for both the baseline 8-bit DCT process and
-a 12-bit DCT process.  The IJG code supports 12-bit JPEG if you define
-BITS_IN_JSAMPLE as 12 rather than 8.  Note that this causes JSAMPLE to be
-larger than a char, so it affects the surrounding application's image data.
-The sample applications cjpeg and djpeg can support 12-bit mode only for PPM
-and GIF file formats; you must disable the other file formats to compile a
-12-bit cjpeg or djpeg.  (install.txt has more information about that.)
-At present, a 12-bit library can handle *only* 12-bit images, not both
-precisions.  (If you need to include both 8- and 12-bit libraries in a single
-application, you could probably do it by defining NEED_SHORT_EXTERNAL_NAMES
-for just one of the copies.  You'd have to access the 8-bit and 12-bit copies
-from separate application source files.  This is untested ... if you try it,
-we'd like to hear whether it works!)
+The IJG code currently supports 8-bit to 12-bit sample data precision by
+defining BITS_IN_JSAMPLE as 8, 9, 10, 11, or 12.
+Note that a value larger than 8 causes JSAMPLE to be larger than a char,
+so it affects the surrounding application's image data.
+The sample applications cjpeg and djpeg can support deeper than 8-bit data
+only for PPM and GIF file formats; you must disable the other file formats
+to compile a 9-bit to 12-bit cjpeg or djpeg.  (install.txt has more
+information about that.)
+Run-time selection and conversion of data precision are currently not
+supported and may be added later.
+Exception:  The transcoding part (jpegtran) supports all settings in a
+single instance, since it operates on the level of DCT coefficients and
+not sample values.
+(If you need to include an 8-bit library and a 9-bit to 12-bit library for
+compression or decompression in a single application, you could probably do
+it by defining NEED_SHORT_EXTERNAL_NAMES for just one of the copies.  You'd
+have to access the 8-bit and the 9-bit to 12-bit copies from separate
+application source files.  This is untested ... if you try it, we'd like to
+hear whether it works!)
 
-Note that a 12-bit library always compresses in Huffman optimization mode,
-in order to generate valid Huffman tables.  This is necessary because our
-default Huffman tables only cover 8-bit data.  If you need to output 12-bit
-files in one pass, you'll have to supply suitable default Huffman tables.
-You may also want to supply your own DCT quantization tables; the existing
-quality-scaling code has been developed for 8-bit use, and probably doesn't
-generate especially good tables for 12-bit.
+Note that the standard Huffman tables are only valid for 8-bit data precision.
+If you selected more than 8-bit data precision, cjpeg uses arithmetic coding
+by default.  The Huffman encoder normally uses entropy optimization to
+compute usable tables for higher precision.  Otherwise, you'll have to
+supply different default Huffman tables.  You may also want to supply your
+own DCT quantization tables; the existing quality-scaling code has been
+developed for 8-bit use, and probably doesn't generate especially good tables
+for 9-bit to 12-bit.
 
 The maximum number of components (color channels) in the image is determined
 by MAX_COMPONENTS.  The JPEG standard allows up to 255 components, but we

makefile.ansi

@@ -74,9 +74,9 @@ MKFILES= configure Makefile.in makefile.ansi makefile.unix makefile.bcc \
 CONFIGFILES= jconfig.cfg jconfig.bcc jconfig.mc6 jconfig.dj jconfig.wat \
         jconfig.vc jconfig.mac jconfig.st jconfig.manx jconfig.sas \
         jconfig.vms
-CONFIGUREFILES= config.guess config.sub install-sh ltmain.sh depcomp missing
-OTHERFILES= jconfig.txt ckconfig.c ansi2knr.c ansi2knr.1 jmemdosa.asm \
-        libjpeg.map
+CONFIGUREFILES= config.guess config.sub install-sh ltmain.sh depcomp \
+        missing ar-lib
+OTHERFILES= jconfig.txt ckconfig.c jmemdosa.asm libjpeg.map
 TESTFILES= testorig.jpg testimg.ppm testimg.bmp testimg.jpg testprog.jpg \
         testimgp.jpg
 DISTFILES= $(DOCS) $(MKFILES) $(CONFIGFILES) $(SOURCES) $(INCLUDES) \

makefile.bcc

@@ -101,9 +101,9 @@ MKFILES= configure Makefile.in makefile.ansi makefile.unix makefile.bcc \
 CONFIGFILES= jconfig.cfg jconfig.bcc jconfig.mc6 jconfig.dj jconfig.wat \
         jconfig.vc jconfig.mac jconfig.st jconfig.manx jconfig.sas \
         jconfig.vms
-CONFIGUREFILES= config.guess config.sub install-sh ltmain.sh depcomp missing
-OTHERFILES= jconfig.txt ckconfig.c ansi2knr.c ansi2knr.1 jmemdosa.asm \
-        libjpeg.map
+CONFIGUREFILES= config.guess config.sub install-sh ltmain.sh depcomp \
+        missing ar-lib
+OTHERFILES= jconfig.txt ckconfig.c jmemdosa.asm libjpeg.map
 TESTFILES= testorig.jpg testimg.ppm testimg.bmp testimg.jpg testprog.jpg \
         testimgp.jpg
 DISTFILES= $(DOCS) $(MKFILES) $(CONFIGFILES) $(SOURCES) $(INCLUDES) \

makefile.dj

@@ -74,9 +74,9 @@ MKFILES= configure Makefile.in makefile.ansi makefile.unix makefile.bcc \
 CONFIGFILES= jconfig.cfg jconfig.bcc jconfig.mc6 jconfig.dj jconfig.wat \
         jconfig.vc jconfig.mac jconfig.st jconfig.manx jconfig.sas \
         jconfig.vms
-CONFIGUREFILES= config.guess config.sub install-sh ltmain.sh depcomp missing
-OTHERFILES= jconfig.txt ckconfig.c ansi2knr.c ansi2knr.1 jmemdosa.asm \
-        libjpeg.map
+CONFIGUREFILES= config.guess config.sub install-sh ltmain.sh depcomp \
+        missing ar-lib
+OTHERFILES= jconfig.txt ckconfig.c jmemdosa.asm libjpeg.map
 TESTFILES= testorig.jpg testimg.ppm testimg.bmp testimg.jpg testprog.jpg \
         testimgp.jpg
 DISTFILES= $(DOCS) $(MKFILES) $(CONFIGFILES) $(SOURCES) $(INCLUDES) \

makefile.manx

@@ -75,9 +75,9 @@ MKFILES= configure Makefile.in makefile.ansi makefile.unix makefile.bcc \
 CONFIGFILES= jconfig.cfg jconfig.bcc jconfig.mc6 jconfig.dj jconfig.wat \
         jconfig.vc jconfig.mac jconfig.st jconfig.manx jconfig.sas \
         jconfig.vms
-CONFIGUREFILES= config.guess config.sub install-sh ltmain.sh depcomp missing
-OTHERFILES= jconfig.txt ckconfig.c ansi2knr.c ansi2knr.1 jmemdosa.asm \
-        libjpeg.map
+CONFIGUREFILES= config.guess config.sub install-sh ltmain.sh depcomp \
+        missing ar-lib
+OTHERFILES= jconfig.txt ckconfig.c jmemdosa.asm libjpeg.map
 TESTFILES= testorig.jpg testimg.ppm testimg.bmp testimg.jpg testprog.jpg \
         testimgp.jpg
 DISTFILES= $(DOCS) $(MKFILES) $(CONFIGFILES) $(SOURCES) $(INCLUDES) \

makefile.mc6

@@ -72,9 +72,9 @@ MKFILES= configure Makefile.in makefile.ansi makefile.unix makefile.bcc \
 CONFIGFILES= jconfig.cfg jconfig.bcc jconfig.mc6 jconfig.dj jconfig.wat \
         jconfig.vc jconfig.mac jconfig.st jconfig.manx jconfig.sas \
         jconfig.vms
-CONFIGUREFILES= config.guess config.sub install-sh ltmain.sh depcomp missing
-OTHERFILES= jconfig.txt ckconfig.c ansi2knr.c ansi2knr.1 jmemdosa.asm \
-        libjpeg.map
+CONFIGUREFILES= config.guess config.sub install-sh ltmain.sh depcomp \
+        missing ar-lib
+OTHERFILES= jconfig.txt ckconfig.c jmemdosa.asm libjpeg.map
 TESTFILES= testorig.jpg testimg.ppm testimg.bmp testimg.jpg testprog.jpg \
         testimgp.jpg
 DISTFILES= $(DOCS) $(MKFILES) $(CONFIGFILES) $(SOURCES) $(INCLUDES) \

makefile.mms

@@ -61,9 +61,9 @@ MKFILES= configure Makefile.in makefile.ansi makefile.unix makefile.bcc \
 CONFIGFILES= jconfig.cfg jconfig.bcc jconfig.mc6 jconfig.dj jconfig.wat \
         jconfig.vc jconfig.mac jconfig.st jconfig.manx jconfig.sas \
         jconfig.vms
-CONFIGUREFILES= config.guess config.sub install-sh ltmain.sh depcomp missing
-OTHERFILES= jconfig.txt ckconfig.c ansi2knr.c ansi2knr.1 jmemdosa.asm \
-        libjpeg.map
+CONFIGUREFILES= config.guess config.sub install-sh ltmain.sh depcomp \
+        missing ar-lib
+OTHERFILES= jconfig.txt ckconfig.c jmemdosa.asm libjpeg.map
 TESTFILES= testorig.jpg testimg.ppm testimg.bmp testimg.jpg testprog.jpg \
         testimgp.jpg
 DISTFILES= $(DOCS) $(MKFILES) $(CONFIGFILES) $(SOURCES) $(INCLUDES) \

makefile.sas

@@ -83,9 +83,9 @@ MKFILES= configure Makefile.in makefile.ansi makefile.unix makefile.bcc \
 CONFIGFILES= jconfig.cfg jconfig.bcc jconfig.mc6 jconfig.dj jconfig.wat \
         jconfig.vc jconfig.mac jconfig.st jconfig.manx jconfig.sas \
         jconfig.vms
-CONFIGUREFILES= config.guess config.sub install-sh ltmain.sh depcomp missing
-OTHERFILES= jconfig.txt ckconfig.c ansi2knr.c ansi2knr.1 jmemdosa.asm \
-        libjpeg.map
+CONFIGUREFILES= config.guess config.sub install-sh ltmain.sh depcomp \
+        missing ar-lib
+OTHERFILES= jconfig.txt ckconfig.c jmemdosa.asm libjpeg.map
 TESTFILES= testorig.jpg testimg.ppm testimg.bmp testimg.jpg testprog.jpg \
         testimgp.jpg
 DISTFILES= $(DOCS) $(MKFILES) $(CONFIGFILES) $(SOURCES) $(INCLUDES) \

makefile.unix

@@ -78,9 +78,9 @@ MKFILES= configure Makefile.in makefile.ansi makefile.unix makefile.bcc \
 CONFIGFILES= jconfig.cfg jconfig.bcc jconfig.mc6 jconfig.dj jconfig.wat \
         jconfig.vc jconfig.mac jconfig.st jconfig.manx jconfig.sas \
         jconfig.vms
-CONFIGUREFILES= config.guess config.sub install-sh ltmain.sh depcomp missing
-OTHERFILES= jconfig.txt ckconfig.c ansi2knr.c ansi2knr.1 jmemdosa.asm \
-        libjpeg.map
+CONFIGUREFILES= config.guess config.sub install-sh ltmain.sh depcomp \
+        missing ar-lib
+OTHERFILES= jconfig.txt ckconfig.c jmemdosa.asm libjpeg.map
 TESTFILES= testorig.jpg testimg.ppm testimg.bmp testimg.jpg testprog.jpg \
         testimgp.jpg
 DISTFILES= $(DOCS) $(MKFILES) $(CONFIGFILES) $(SOURCES) $(INCLUDES) \

makefile.vc

@@ -71,9 +71,9 @@ MKFILES= configure Makefile.in makefile.ansi makefile.unix makefile.bcc \
 CONFIGFILES= jconfig.cfg jconfig.bcc jconfig.mc6 jconfig.dj jconfig.wat \
         jconfig.vc jconfig.mac jconfig.st jconfig.manx jconfig.sas \
         jconfig.vms
-CONFIGUREFILES= config.guess config.sub install-sh ltmain.sh depcomp missing
-OTHERFILES= jconfig.txt ckconfig.c ansi2knr.c ansi2knr.1 jmemdosa.asm \
-        libjpeg.map
+CONFIGUREFILES= config.guess config.sub install-sh ltmain.sh depcomp \
+        missing ar-lib
+OTHERFILES= jconfig.txt ckconfig.c jmemdosa.asm libjpeg.map
 TESTFILES= testorig.jpg testimg.ppm testimg.bmp testimg.jpg testprog.jpg \
         testimgp.jpg
 DISTFILES= $(DOCS) $(MKFILES) $(CONFIGFILES) $(SOURCES) $(INCLUDES) \

makefile.wat

@@ -73,9 +73,9 @@ MKFILES= configure Makefile.in makefile.ansi makefile.unix makefile.bcc &
 CONFIGFILES= jconfig.cfg jconfig.bcc jconfig.mc6 jconfig.dj jconfig.wat &
         jconfig.vc jconfig.mac jconfig.st jconfig.manx jconfig.sas &
         jconfig.vms
-CONFIGUREFILES= config.guess config.sub install-sh ltmain.sh depcomp missing
-OTHERFILES= jconfig.txt ckconfig.c ansi2knr.c ansi2knr.1 jmemdosa.asm &
-        libjpeg.map
+CONFIGUREFILES= config.guess config.sub install-sh ltmain.sh depcomp &
+        missing ar-lib
+OTHERFILES= jconfig.txt ckconfig.c jmemdosa.asm libjpeg.map
 TESTFILES= testorig.jpg testimg.ppm testimg.bmp testimg.jpg testprog.jpg &
         testimgp.jpg
 DISTFILES= $(DOCS) $(MKFILES) $(CONFIGFILES) $(SOURCES) $(INCLUDES) &

missing

@@ -1,11 +1,10 @@
 #! /bin/sh
-# Common stub for a few missing GNU programs while installing.
+# Common wrapper for a few potentially missing GNU programs.
 
-scriptversion=2009-04-28.21; # UTC
+scriptversion=2013-10-28.13; # UTC
 
-# Copyright (C) 1996, 1997, 1999, 2000, 2002, 2003, 2004, 2005, 2006,
-# 2008, 2009 Free Software Foundation, Inc.
-# Originally by Fran,cois Pinard <pinard@iro.umontreal.ca>, 1996.
+# Copyright (C) 1996-2013 Free Software Foundation, Inc.
+# Originally written by Fran,cois Pinard <pinard@iro.umontreal.ca>, 1996.
 
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -26,69 +25,40 @@ scriptversion=2009-04-28.21; # UTC
 # the same distribution terms that you use for the rest of that program.
 
 if test $# -eq 0; then
-  echo 1>&2 "Try \`$0 --help' for more information"
+  echo 1>&2 "Try '$0 --help' for more information"
   exit 1
 fi
 
-run=:
-sed_output='s/.* --output[ =]\([^ ]*\).*/\1/p'
-sed_minuso='s/.* -o \([^ ]*\).*/\1/p'
-
-# In the cases where this matters, `missing' is being run in the
-# srcdir already.
-if test -f configure.ac; then
-  configure_ac=configure.ac
-else
-  configure_ac=configure.in
-fi
-
-msg="missing on your system"
-
 case $1 in
---run)
-  # Try to run requested program, and just exit if it succeeds.
-  run=
+
+  --is-lightweight)
+    # Used by our autoconf macros to check whether the available missing
+    # script is modern enough.
+    exit 0
+    ;;
+
+  --run)
+    # Back-compat with the calling convention used by older automake.
     shift
-  "$@" && exit 0
-  # Exit code 63 means version mismatch.  This often happens
-  # when the user try to use an ancient version of a tool on
-  # a file that requires a minimum version.  In this case we
-  # we should proceed has if the program had been absent, or
-  # if --run hadn't been passed.
-  if test $? = 63; then
-    run=:
-    msg="probably too old"
-  fi
     ;;
 
   -h|--h|--he|--hel|--help)
     echo "\
 $0 [OPTION]... PROGRAM [ARGUMENT]...
 
-Handle \`PROGRAM [ARGUMENT]...' for when PROGRAM is missing, or return an
-error status if there is no known handling for PROGRAM.
+Run 'PROGRAM [ARGUMENT]...', returning a proper advice when this fails due
+to PROGRAM being missing or too old.
 
 Options:
   -h, --help      display this help and exit
   -v, --version   output version information and exit
-  --run           try to run the given command, and emulate it if it fails
 
 Supported PROGRAM values:
-  aclocal      touch file \`aclocal.m4'
-  autoconf     touch file \`configure'
-  autoheader   touch file \`config.h.in'
-  autom4te     touch the output file, or create a stub one
-  automake     touch all \`Makefile.in' files
-  bison        create \`y.tab.[ch]', if possible, from existing .[ch]
-  flex         create \`lex.yy.c', if possible, from existing .c
-  help2man     touch the output file
-  lex          create \`lex.yy.c', if possible, from existing .c
-  makeinfo     touch the output file
-  tar          try tar, gnutar, gtar, then tar without non-portable flags
-  yacc         create \`y.tab.[ch]', if possible, from existing .[ch]
+  aclocal   autoconf  autoheader   autom4te  automake  makeinfo
+  bison     yacc      flex         lex       help2man
 
-Version suffixes to PROGRAM as well as the prefixes \`gnu-', \`gnu', and
-\`g' are ignored when checking the name.
+Version suffixes to PROGRAM as well as the prefixes 'gnu-', 'gnu', and
+'g' are ignored when checking the name.
 
 Send bug reports to <bug-automake@gnu.org>."
     exit $?
@@ -100,272 +70,141 @@ Send bug reports to <bug-automake@gnu.org>."
     ;;
 
   -*)
-    echo 1>&2 "$0: Unknown \`$1' option"
-    echo 1>&2 "Try \`$0 --help' for more information"
+    echo 1>&2 "$0: unknown '$1' option"
+    echo 1>&2 "Try '$0 --help' for more information"
     exit 1
     ;;
 
 esac
 
-# normalize program name to check for.
-program=`echo "$1" | sed '
+# Run the given program, remember its exit status.
+"$@"; st=$?
+
+# If it succeeded, we are done.
+test $st -eq 0 && exit 0
+
+# Also exit now if we it failed (or wasn't found), and '--version' was
+# passed; such an option is passed most likely to detect whether the
+# program is present and works.
+case $2 in --version|--help) exit $st;; esac
+
+# Exit code 63 means version mismatch.  This often happens when the user
+# tries to use an ancient version of a tool on a file that requires a
+# minimum version.
+if test $st -eq 63; then
+  msg="probably too old"
+elif test $st -eq 127; then
+  # Program was missing.
+  msg="missing on your system"
+else
+  # Program was found and executed, but failed.  Give up.
+  exit $st
+fi
+
+perl_URL=http://www.perl.org/
+flex_URL=http://flex.sourceforge.net/
+gnu_software_URL=http://www.gnu.org/software
+
+program_details ()
+{
+  case $1 in
+    aclocal|automake)
+      echo "The '$1' program is part of the GNU Automake package:"
+      echo "<$gnu_software_URL/automake>"
+      echo "It also requires GNU Autoconf, GNU m4 and Perl in order to run:"
+      echo "<$gnu_software_URL/autoconf>"
+      echo "<$gnu_software_URL/m4/>"
+      echo "<$perl_URL>"
+      ;;
+    autoconf|autom4te|autoheader)
+      echo "The '$1' program is part of the GNU Autoconf package:"
+      echo "<$gnu_software_URL/autoconf/>"
+      echo "It also requires GNU m4 and Perl in order to run:"
+      echo "<$gnu_software_URL/m4/>"
+      echo "<$perl_URL>"
+      ;;
+  esac
+}
+
+give_advice ()
+{
+  # Normalize program name to check for.
+  normalized_program=`echo "$1" | sed '
     s/^gnu-//; t
     s/^gnu//; t
     s/^g//; t'`
 
-# Now exit if we have it, but it failed.  Also exit now if we
-# don't have it and --version was passed (most likely to detect
-# the program).  This is about non-GNU programs, so use $1 not
-# $program.
-case $1 in
-  lex*|yacc*)
-    # Not GNU programs, they don't have --version.
-    ;;
-
-  tar*)
-    if test -n "$run"; then
-       echo 1>&2 "ERROR: \`tar' requires --run"
-       exit 1
-    elif test "x$2" = "x--version" || test "x$2" = "x--help"; then
-       exit 1
-    fi
-    ;;
-
-  *)
-    if test -z "$run" && ($1 --version) > /dev/null 2>&1; then
-       # We have it, but it failed.
-       exit 1
-    elif test "x$2" = "x--version" || test "x$2" = "x--help"; then
-       # Could not run --version or --help.  This is probably someone
-       # running `$TOOL --version' or `$TOOL --help' to check whether
-       # $TOOL exists and not knowing $TOOL uses missing.
-       exit 1
-    fi
-    ;;
-esac
-
-# If it does not exist, or fails to run (possibly an outdated version),
-# try to emulate it.
-case $program in
-  aclocal*)
-    echo 1>&2 "\
-WARNING: \`$1' is $msg.  You should only need it if
-         you modified \`acinclude.m4' or \`${configure_ac}'.  You might want
-         to install the \`Automake' and \`Perl' packages.  Grab them from
-         any GNU archive site."
-    touch aclocal.m4
-    ;;
+  printf '%s\n' "'$1' is $msg."
 
+  configure_deps="'configure.ac' or m4 files included by 'configure.ac'"
+  case $normalized_program in
     autoconf*)
-    echo 1>&2 "\
-WARNING: \`$1' is $msg.  You should only need it if
-         you modified \`${configure_ac}'.  You might want to install the
-         \`Autoconf' and \`GNU m4' packages.  Grab them from any GNU
-         archive site."
-    touch configure
+      echo "You should only need it if you modified 'configure.ac',"
+      echo "or m4 files included by it."
+      program_details 'autoconf'
       ;;
-
     autoheader*)
-    echo 1>&2 "\
-WARNING: \`$1' is $msg.  You should only need it if
-         you modified \`acconfig.h' or \`${configure_ac}'.  You might want
-         to install the \`Autoconf' and \`GNU m4' packages.  Grab them
-         from any GNU archive site."
-    files=`sed -n 's/^[ ]*A[CM]_CONFIG_HEADER(\([^)]*\)).*/\1/p' ${configure_ac}`
-    test -z "$files" && files="config.h"
-    touch_files=
-    for f in $files; do
-      case $f in
-      *:*) touch_files="$touch_files "`echo "$f" |
-				       sed -e 's/^[^:]*://' -e 's/:.*//'`;;
-      *) touch_files="$touch_files $f.in";;
-      esac
-    done
-    touch $touch_files
+      echo "You should only need it if you modified 'acconfig.h' or"
+      echo "$configure_deps."
+      program_details 'autoheader'
       ;;
-
     automake*)
-    echo 1>&2 "\
-WARNING: \`$1' is $msg.  You should only need it if
-         you modified \`Makefile.am', \`acinclude.m4' or \`${configure_ac}'.
-         You might want to install the \`Automake' and \`Perl' packages.
-         Grab them from any GNU archive site."
-    find . -type f -name Makefile.am -print |
-	   sed 's/\.am$/.in/' |
-	   while read f; do touch "$f"; done
+      echo "You should only need it if you modified 'Makefile.am' or"
+      echo "$configure_deps."
+      program_details 'automake'
+      ;;
+    aclocal*)
+      echo "You should only need it if you modified 'acinclude.m4' or"
+      echo "$configure_deps."
+      program_details 'aclocal'
       ;;
-
    autom4te*)
-    echo 1>&2 "\
-WARNING: \`$1' is needed, but is $msg.
-         You might have modified some files without having the
-         proper tools for further handling them.
-         You can get \`$1' as part of \`Autoconf' from any GNU
-         archive site."
-
-    file=`echo "$*" | sed -n "$sed_output"`
-    test -z "$file" && file=`echo "$*" | sed -n "$sed_minuso"`
-    if test -f "$file"; then
-	touch $file
-    else
-	test -z "$file" || exec >$file
-	echo "#! /bin/sh"
-	echo "# Created by GNU Automake missing as a replacement of"
-	echo "#  $ $@"
-	echo "exit 0"
-	chmod +x $file
-	exit 1
-    fi
+      echo "You might have modified some maintainer files that require"
+      echo "the 'autom4te' program to be rebuilt."
+      program_details 'autom4te'
       ;;
-
     bison*|yacc*)
-    echo 1>&2 "\
-WARNING: \`$1' $msg.  You should only need it if
-         you modified a \`.y' file.  You may need the \`Bison' package
-         in order for those modifications to take effect.  You can get
-         \`Bison' from any GNU archive site."
-    rm -f y.tab.c y.tab.h
-    if test $# -ne 1; then
-        eval LASTARG="\${$#}"
-	case $LASTARG in
-	*.y)
-	    SRCFILE=`echo "$LASTARG" | sed 's/y$/c/'`
-	    if test -f "$SRCFILE"; then
-	         cp "$SRCFILE" y.tab.c
-	    fi
-	    SRCFILE=`echo "$LASTARG" | sed 's/y$/h/'`
-	    if test -f "$SRCFILE"; then
-	         cp "$SRCFILE" y.tab.h
-	    fi
+      echo "You should only need it if you modified a '.y' file."
+      echo "You may want to install the GNU Bison package:"
+      echo "<$gnu_software_URL/bison/>"
       ;;
-	esac
-    fi
-    if test ! -f y.tab.h; then
-	echo >y.tab.h
-    fi
-    if test ! -f y.tab.c; then
-	echo 'main() { return 0; }' >y.tab.c
-    fi
-    ;;
-
     lex*|flex*)
-    echo 1>&2 "\
-WARNING: \`$1' is $msg.  You should only need it if
-         you modified a \`.l' file.  You may need the \`Flex' package
-         in order for those modifications to take effect.  You can get
-         \`Flex' from any GNU archive site."
-    rm -f lex.yy.c
-    if test $# -ne 1; then
-        eval LASTARG="\${$#}"
-	case $LASTARG in
-	*.l)
-	    SRCFILE=`echo "$LASTARG" | sed 's/l$/c/'`
-	    if test -f "$SRCFILE"; then
-	         cp "$SRCFILE" lex.yy.c
-	    fi
+      echo "You should only need it if you modified a '.l' file."
+      echo "You may want to install the Fast Lexical Analyzer package:"
+      echo "<$flex_URL>"
       ;;
-	esac
-    fi
-    if test ! -f lex.yy.c; then
-	echo 'main() { return 0; }' >lex.yy.c
-    fi
-    ;;
-
     help2man*)
-    echo 1>&2 "\
-WARNING: \`$1' is $msg.  You should only need it if
-	 you modified a dependency of a manual page.  You may need the
-	 \`Help2man' package in order for those modifications to take
-	 effect.  You can get \`Help2man' from any GNU archive site."
-
-    file=`echo "$*" | sed -n "$sed_output"`
-    test -z "$file" && file=`echo "$*" | sed -n "$sed_minuso"`
-    if test -f "$file"; then
-	touch $file
-    else
-	test -z "$file" || exec >$file
-	echo ".ab help2man is required to generate this page"
-	exit $?
-    fi
+      echo "You should only need it if you modified a dependency" \
+           "of a man page."
+      echo "You may want to install the GNU Help2man package:"
+      echo "<$gnu_software_URL/help2man/>"
     ;;
-
     makeinfo*)
-    echo 1>&2 "\
-WARNING: \`$1' is $msg.  You should only need it if
-         you modified a \`.texi' or \`.texinfo' file, or any other file
-         indirectly affecting the aspect of the manual.  The spurious
-         call might also be the consequence of using a buggy \`make' (AIX,
-         DU, IRIX).  You might want to install the \`Texinfo' package or
-         the \`GNU make' package.  Grab either from any GNU archive site."
-    # The file to touch is that specified with -o ...
-    file=`echo "$*" | sed -n "$sed_output"`
-    test -z "$file" && file=`echo "$*" | sed -n "$sed_minuso"`
-    if test -z "$file"; then
-      # ... or it is the one specified with @setfilename ...
-      infile=`echo "$*" | sed 's/.* \([^ ]*\) *$/\1/'`
-      file=`sed -n '
-	/^@setfilename/{
-	  s/.* \([^ ]*\) *$/\1/
-	  p
-	  q
-	}' $infile`
-      # ... or it is derived from the source name (dir/f.texi becomes f.info)
-      test -z "$file" && file=`echo "$infile" | sed 's,.*/,,;s,.[^.]*$,,'`.info
-    fi
-    # If the file does not exist, the user really needs makeinfo;
-    # let's fail without touching anything.
-    test -f $file || exit 1
-    touch $file
+      echo "You should only need it if you modified a '.texi' file, or"
+      echo "any other file indirectly affecting the aspect of the manual."
+      echo "You might want to install the Texinfo package:"
+      echo "<$gnu_software_URL/texinfo/>"
+      echo "The spurious makeinfo call might also be the consequence of"
+      echo "using a buggy 'make' (AIX, DU, IRIX), in which case you might"
+      echo "want to install GNU make:"
+      echo "<$gnu_software_URL/make/>"
       ;;
-
-  tar*)
-    shift
-
-    # We have already tried tar in the generic part.
-    # Look for gnutar/gtar before invocation to avoid ugly error
-    # messages.
-    if (gnutar --version > /dev/null 2>&1); then
-       gnutar "$@" && exit 0
-    fi
-    if (gtar --version > /dev/null 2>&1); then
-       gtar "$@" && exit 0
-    fi
-    firstarg="$1"
-    if shift; then
-	case $firstarg in
-	*o*)
-	    firstarg=`echo "$firstarg" | sed s/o//`
-	    tar "$firstarg" "$@" && exit 0
-	    ;;
-	esac
-	case $firstarg in
-	*h*)
-	    firstarg=`echo "$firstarg" | sed s/h//`
-	    tar "$firstarg" "$@" && exit 0
-	    ;;
-	esac
-    fi
-
-    echo 1>&2 "\
-WARNING: I can't seem to be able to run \`tar' with the given arguments.
-         You may want to install GNU tar or Free paxutils, or check the
-         command line arguments."
-    exit 1
-    ;;
-
     *)
-    echo 1>&2 "\
-WARNING: \`$1' is needed, and is $msg.
-         You might have modified some files without having the
-         proper tools for further handling them.  Check the \`README' file,
-         it often tells you about the needed prerequisites for installing
-         this package.  You may also peek at any GNU archive site, in case
-         some other package would contain this missing \`$1' program."
-    exit 1
+      echo "You might have modified some files without having the proper"
+      echo "tools for further handling them.  Check the 'README' file, it"
+      echo "often tells you about the needed prerequisites for installing"
+      echo "this package.  You may also peek at any GNU archive site, in"
+      echo "case some other package contains this missing '$1' program."
       ;;
-esac
+  esac
+}
 
-exit 0
+give_advice "$1" | sed -e '1s/^/WARNING: /' \
+                       -e '2,$s/^/         /' >&2
+
+# Propagate the correct exit status (expected to be 127 for a program
+# not found, 63 for a program that failed due to version mismatch).
+exit $st
 
 # Local variables:
 # eval: (add-hook 'write-file-hooks 'time-stamp)

rdjpgcom.1

@@ -1,4 +1,4 @@
-.TH RDJPGCOM 1 "02 April 2009"
+.TH RDJPGCOM 1 "13 September 2013"
 .SH NAME
 rdjpgcom \- display text comments from a JPEG file
 .SH SYNOPSIS

structure.txt

@@ -1,6 +1,6 @@
 IJG JPEG LIBRARY:  SYSTEM ARCHITECTURE
 
-Copyright (C) 1991-2012, Thomas G. Lane, Guido Vollbeding.
+Copyright (C) 1991-2013, Thomas G. Lane, Guido Vollbeding.
 This file is part of the Independent JPEG Group's software.
 For conditions of distribution and use, see the accompanying README file.
 
@@ -170,16 +170,16 @@ can be simplified a little if they work on padded data: it's not necessary to
 have special cases at the right and bottom edges.  Therefore the interface
 buffer is always an integral number of blocks wide and high, and we expect
 compression preprocessing to pad the source data properly.  Padding will occur
-only to the next block (N-sample) boundary.  In an interleaved-scan situation,
-additional dummy blocks may be used to fill out MCUs, but the MCU assembly and
-disassembly logic will create or discard these blocks internally.  (This is
-advantageous for speed reasons, since we avoid DCTing the dummy blocks.
-It also permits a small reduction in file size, because the compressor can
-choose dummy block contents so as to minimize their size in compressed form.
-Finally, it makes the interface buffer specification independent of whether
-the file is actually interleaved or not.)  Applications that wish to deal
-directly with the downsampled data must provide similar buffering and padding
-for odd-sized images.
+only to the next block (block_size-sample) boundary.  In an interleaved-scan
+situation, additional dummy blocks may be used to fill out MCUs, but the MCU
+assembly and disassembly logic will create or discard these blocks internally.
+(This is advantageous for speed reasons, since we avoid DCTing the dummy
+blocks.  It also permits a small reduction in file size, because the
+compressor can choose dummy block contents so as to minimize their size
+in compressed form.  Finally, it makes the interface buffer specification
+independent of whether the file is actually interleaved or not.)
+Applications that wish to deal directly with the downsampled data must
+provide similar buffering and padding for odd-sized images.
 
 
 *** Poor man's object-oriented programming ***
@@ -345,9 +345,10 @@ The objects shown above are:
   require context rows above and below the current row group; the
   preprocessing controller is responsible for supplying these rows via proper
   buffering.  The downsampler is responsible for edge expansion at the right
-  edge (i.e., extending each sample row to a multiple of N samples); but the
-  preprocessing controller is responsible for vertical edge expansion (i.e.,
-  duplicating the bottom sample row as needed to make a multiple of N rows).
+  edge (i.e., extending each sample row to a multiple of block_size samples);
+  but the preprocessing controller is responsible for vertical edge expansion
+  (i.e., duplicating the bottom sample row as needed to make a multiple of
+  block_size rows).
 
 * Coefficient controller: buffer controller for the DCT-coefficient data.
   This controller handles MCU assembly, including insertion of dummy DCT
@@ -651,8 +652,8 @@ contain quantized coefficients everywhere outside the DCT/IDCT subsystems.
 quantization a la JPEG Part 3.)
 
 Notice that the allocation unit is now a row of 8x8 coefficient blocks,
-corresponding to N rows of samples.  Otherwise the structure is much the same
-as for samples, and for the same reasons.
+corresponding to block_size rows of samples.  Otherwise the structure
+is much the same as for samples, and for the same reasons.
 
 On machines where malloc() can't handle a request bigger than 64Kb, this data
 structure limits us to rows of less than 512 JBLOCKs, or a picture width of

transupp.c

@@ -1,7 +1,7 @@
 /*
  * transupp.c
  *
- * Copyright (C) 1997-2011, Thomas G. Lane, Guido Vollbeding.
+ * Copyright (C) 1997-2013, Thomas G. Lane, Guido Vollbeding.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
@@ -113,6 +113,116 @@ do_crop (j_decompress_ptr srcinfo, j_compress_ptr dstinfo,
 }
 
 
+LOCAL(void)
+do_crop_ext (j_decompress_ptr srcinfo, j_compress_ptr dstinfo,
+	     JDIMENSION x_crop_offset, JDIMENSION y_crop_offset,
+	     jvirt_barray_ptr *src_coef_arrays,
+	     jvirt_barray_ptr *dst_coef_arrays)
+/* Crop.  This is only used when no rotate/flip is requested with the crop.
+ * Extension: If the destination size is larger than the source, we fill in
+ * the extra area with zero (neutral gray).  Note we also have to zero partial
+ * iMCUs at the right and bottom edge of the source image area in this case.
+ */
+{
+  JDIMENSION MCU_cols, MCU_rows, comp_width, comp_height;
+  JDIMENSION dst_blk_y, x_crop_blocks, y_crop_blocks;
+  int ci, offset_y;
+  JBLOCKARRAY src_buffer, dst_buffer;
+  jpeg_component_info *compptr;
+
+  MCU_cols = srcinfo->output_width /
+    (dstinfo->max_h_samp_factor * dstinfo->min_DCT_h_scaled_size);
+  MCU_rows = srcinfo->output_height /
+    (dstinfo->max_v_samp_factor * dstinfo->min_DCT_v_scaled_size);
+
+  for (ci = 0; ci < dstinfo->num_components; ci++) {
+    compptr = dstinfo->comp_info + ci;
+    comp_width = MCU_cols * compptr->h_samp_factor;
+    comp_height = MCU_rows * compptr->v_samp_factor;
+    x_crop_blocks = x_crop_offset * compptr->h_samp_factor;
+    y_crop_blocks = y_crop_offset * compptr->v_samp_factor;
+    for (dst_blk_y = 0; dst_blk_y < compptr->height_in_blocks;
+	 dst_blk_y += compptr->v_samp_factor) {
+      dst_buffer = (*srcinfo->mem->access_virt_barray)
+	((j_common_ptr) srcinfo, dst_coef_arrays[ci], dst_blk_y,
+	 (JDIMENSION) compptr->v_samp_factor, TRUE);
+      if (dstinfo->jpeg_height > srcinfo->output_height) {
+	if (dst_blk_y < y_crop_blocks ||
+	    dst_blk_y >= comp_height + y_crop_blocks) {
+	  for (offset_y = 0; offset_y < compptr->v_samp_factor; offset_y++) {
+	    FMEMZERO(dst_buffer[offset_y],
+		     compptr->width_in_blocks * SIZEOF(JBLOCK));
+	  }
+	  continue;
+	}
+	src_buffer = (*srcinfo->mem->access_virt_barray)
+	  ((j_common_ptr) srcinfo, src_coef_arrays[ci],
+	   dst_blk_y - y_crop_blocks,
+	   (JDIMENSION) compptr->v_samp_factor, FALSE);
+      } else {
+	src_buffer = (*srcinfo->mem->access_virt_barray)
+	  ((j_common_ptr) srcinfo, src_coef_arrays[ci],
+	   dst_blk_y + y_crop_blocks,
+	   (JDIMENSION) compptr->v_samp_factor, FALSE);
+      }
+      for (offset_y = 0; offset_y < compptr->v_samp_factor; offset_y++) {
+	if (dstinfo->jpeg_width > srcinfo->output_width) {
+	  if (x_crop_blocks > 0) {
+	    FMEMZERO(dst_buffer[offset_y],
+		     x_crop_blocks * SIZEOF(JBLOCK));
+	  }
+	  jcopy_block_row(src_buffer[offset_y],
+			  dst_buffer[offset_y] + x_crop_blocks,
+			  comp_width);
+	  if (compptr->width_in_blocks > comp_width + x_crop_blocks) {
+	    FMEMZERO(dst_buffer[offset_y] +
+		       comp_width + x_crop_blocks,
+		     (compptr->width_in_blocks -
+		       comp_width - x_crop_blocks) * SIZEOF(JBLOCK));
+	  }
+	} else {
+	  jcopy_block_row(src_buffer[offset_y] + x_crop_blocks,
+			  dst_buffer[offset_y],
+			  compptr->width_in_blocks);
+	}
+      }
+    }
+  }
+}
+
+
+LOCAL(void)
+do_wipe (j_decompress_ptr srcinfo, j_compress_ptr dstinfo,
+	 JDIMENSION x_crop_offset, JDIMENSION y_crop_offset,
+	 jvirt_barray_ptr *src_coef_arrays,
+	 JDIMENSION drop_width, JDIMENSION drop_height)
+/* Wipe - drop content of specified area, fill with zero (neutral gray) */
+{
+  JDIMENSION comp_width, comp_height;
+  JDIMENSION blk_y, x_wipe_blocks, y_wipe_blocks;
+  int ci, offset_y;
+  JBLOCKARRAY buffer;
+  jpeg_component_info *compptr;
+
+  for (ci = 0; ci < dstinfo->num_components; ci++) {
+    compptr = dstinfo->comp_info + ci;
+    comp_width = drop_width * compptr->h_samp_factor;
+    comp_height = drop_height * compptr->v_samp_factor;
+    x_wipe_blocks = x_crop_offset * compptr->h_samp_factor;
+    y_wipe_blocks = y_crop_offset * compptr->v_samp_factor;
+    for (blk_y = 0; blk_y < comp_height; blk_y += compptr->v_samp_factor) {
+      buffer = (*srcinfo->mem->access_virt_barray)
+	((j_common_ptr) srcinfo, src_coef_arrays[ci], blk_y + y_wipe_blocks,
+	 (JDIMENSION) compptr->v_samp_factor, TRUE);
+      for (offset_y = 0; offset_y < compptr->v_samp_factor; offset_y++) {
+	FMEMZERO(buffer[offset_y] + x_wipe_blocks,
+		 comp_width * SIZEOF(JBLOCK));
+      }
+    }
+  }
+}
+
+
 LOCAL(void)
 do_flip_h_no_crop (j_decompress_ptr srcinfo, j_compress_ptr dstinfo,
 		   JDIMENSION x_crop_offset,
@@ -888,7 +998,8 @@ jtransform_request_workspace (j_decompress_ptr srcinfo,
 
   /* Determine number of components in output image */
   if (info->force_grayscale &&
-      srcinfo->jpeg_color_space == JCS_YCbCr &&
+      (srcinfo->jpeg_color_space == JCS_YCbCr ||
+       srcinfo->jpeg_color_space == JCS_BG_YCC) &&
       srcinfo->num_components == 3)
     /* We'll only process the first component */
     info->num_components = 1;
@@ -965,39 +1076,81 @@ jtransform_request_workspace (j_decompress_ptr srcinfo,
       info->crop_xoffset = 0;	/* default to +0 */
     if (info->crop_yoffset_set == JCROP_UNSET)
       info->crop_yoffset = 0;	/* default to +0 */
-    if (info->crop_xoffset >= info->output_width ||
-	info->crop_yoffset >= info->output_height)
+    if (info->crop_width_set == JCROP_UNSET) {
+      if (info->crop_xoffset >= info->output_width)
 	ERREXIT(srcinfo, JERR_BAD_CROP_SPEC);
-    if (info->crop_width_set == JCROP_UNSET)
       info->crop_width = info->output_width - info->crop_xoffset;
-    if (info->crop_height_set == JCROP_UNSET)
+    } else {
+      /* Check for crop extension */
+      if (info->crop_width > info->output_width) {
+	/* Crop extension does not work when transforming! */
+	if (info->transform != JXFORM_NONE ||
+	    info->crop_xoffset >= info->crop_width ||
+	    info->crop_xoffset > info->crop_width - info->output_width)
+	  ERREXIT(srcinfo, JERR_BAD_CROP_SPEC);
+      } else {
+	if (info->crop_xoffset >= info->output_width ||
+	    info->crop_width <= 0 ||
+	    info->crop_xoffset > info->output_width - info->crop_width)
+	  ERREXIT(srcinfo, JERR_BAD_CROP_SPEC);
+      }
+    }
+    if (info->crop_height_set == JCROP_UNSET) {
+      if (info->crop_yoffset >= info->output_height)
+	ERREXIT(srcinfo, JERR_BAD_CROP_SPEC);
       info->crop_height = info->output_height - info->crop_yoffset;
-    /* Ensure parameters are valid */
-    if (info->crop_width <= 0 || info->crop_width > info->output_width ||
-	info->crop_height <= 0 || info->crop_height > info->output_height ||
-	info->crop_xoffset > info->output_width - info->crop_width ||
+    } else {
+      /* Check for crop extension */
+      if (info->crop_height > info->output_height) {
+	/* Crop extension does not work when transforming! */
+	if (info->transform != JXFORM_NONE ||
+	    info->crop_yoffset >= info->crop_height ||
+	    info->crop_yoffset > info->crop_height - info->output_height)
+	  ERREXIT(srcinfo, JERR_BAD_CROP_SPEC);
+      } else {
+	if (info->crop_yoffset >= info->output_height ||
+	    info->crop_height <= 0 ||
 	    info->crop_yoffset > info->output_height - info->crop_height)
 	  ERREXIT(srcinfo, JERR_BAD_CROP_SPEC);
+      }
+    }
     /* Convert negative crop offsets into regular offsets */
-    if (info->crop_xoffset_set == JCROP_NEG)
-      xoffset = info->output_width - info->crop_width - info->crop_xoffset;
-    else
+    if (info->crop_xoffset_set != JCROP_NEG)
       xoffset = info->crop_xoffset;
-    if (info->crop_yoffset_set == JCROP_NEG)
-      yoffset = info->output_height - info->crop_height - info->crop_yoffset;
+    else if (info->crop_width > info->output_width) /* crop extension */
+      xoffset = info->crop_width - info->output_width - info->crop_xoffset;
     else
+      xoffset = info->output_width - info->crop_width - info->crop_xoffset;
+    if (info->crop_yoffset_set != JCROP_NEG)
       yoffset = info->crop_yoffset;
+    else if (info->crop_height > info->output_height) /* crop extension */
+      yoffset = info->crop_height - info->output_height - info->crop_yoffset;
+    else
+      yoffset = info->output_height - info->crop_height - info->crop_yoffset;
     /* Now adjust so that upper left corner falls at an iMCU boundary */
-    if (info->crop_width_set == JCROP_FORCE)
+    if (info->transform == JXFORM_WIPE) {
+      /* Ensure the effective wipe region will cover the requested */
+      info->drop_width = (JDIMENSION) jdiv_round_up
+	((long) (info->crop_width + (xoffset % info->iMCU_sample_width)),
+	 (long) info->iMCU_sample_width);
+      info->drop_height = (JDIMENSION) jdiv_round_up
+	((long) (info->crop_height + (yoffset % info->iMCU_sample_height)),
+	 (long) info->iMCU_sample_height);
+    } else {
+      /* Ensure the effective crop region will cover the requested */
+      if (info->crop_width_set == JCROP_FORCE ||
+	  info->crop_width > info->output_width)
 	info->output_width = info->crop_width;
       else
 	info->output_width =
 	  info->crop_width + (xoffset % info->iMCU_sample_width);
-    if (info->crop_height_set == JCROP_FORCE)
+      if (info->crop_height_set == JCROP_FORCE ||
+	  info->crop_height > info->output_height)
 	info->output_height = info->crop_height;
       else
 	info->output_height =
 	  info->crop_height + (yoffset % info->iMCU_sample_height);
+    }
     /* Save x/y offsets measured in iMCUs */
     info->x_crop_offset = xoffset / info->iMCU_sample_width;
     info->y_crop_offset = yoffset / info->iMCU_sample_height;
@@ -1013,7 +1166,9 @@ jtransform_request_workspace (j_decompress_ptr srcinfo,
   transpose_it = FALSE;
   switch (info->transform) {
   case JXFORM_NONE:
-    if (info->x_crop_offset != 0 || info->y_crop_offset != 0)
+    if (info->x_crop_offset != 0 || info->y_crop_offset != 0 ||
+	info->output_width > srcinfo->output_width ||
+	info->output_height > srcinfo->output_height)
       need_workspace = TRUE;
     /* No workspace needed if neither cropping nor transforming */
     break;
@@ -1067,6 +1222,8 @@ jtransform_request_workspace (j_decompress_ptr srcinfo,
     need_workspace = TRUE;
     transpose_it = TRUE;
     break;
+  case JXFORM_WIPE:
+    break;
   }
 
   /* Allocate workspace if needed.
@@ -1327,12 +1484,13 @@ jtransform_adjust_parameters (j_decompress_ptr srcinfo,
 {
   /* If force-to-grayscale is requested, adjust destination parameters */
   if (info->force_grayscale) {
-    /* First, ensure we have YCbCr or grayscale data, and that the source's
+    /* First, ensure we have YCC or grayscale data, and that the source's
      * Y channel is full resolution.  (No reasonable person would make Y
      * be less than full resolution, so actually coping with that case
      * isn't worth extra code space.  But we check it to avoid crashing.)
      */
-    if (((dstinfo->jpeg_color_space == JCS_YCbCr &&
+    if ((((dstinfo->jpeg_color_space == JCS_YCbCr ||
+	   dstinfo->jpeg_color_space == JCS_BG_YCC) &&
 	  dstinfo->num_components == 3) ||
 	 (dstinfo->jpeg_color_space == JCS_GRAYSCALE &&
 	  dstinfo->num_components == 1)) &&
@@ -1427,7 +1585,11 @@ jtransform_execute_transform (j_decompress_ptr srcinfo,
    */
   switch (info->transform) {
   case JXFORM_NONE:
-    if (info->x_crop_offset != 0 || info->y_crop_offset != 0)
+    if (info->output_width > srcinfo->output_width ||
+	info->output_height > srcinfo->output_height)
+      do_crop_ext(srcinfo, dstinfo, info->x_crop_offset, info->y_crop_offset,
+		  src_coef_arrays, dst_coef_arrays);
+    else if (info->x_crop_offset != 0 || info->y_crop_offset != 0)
       do_crop(srcinfo, dstinfo, info->x_crop_offset, info->y_crop_offset,
 	      src_coef_arrays, dst_coef_arrays);
     break;
@@ -1463,6 +1625,10 @@ jtransform_execute_transform (j_decompress_ptr srcinfo,
     do_rot_270(srcinfo, dstinfo, info->x_crop_offset, info->y_crop_offset,
 	       src_coef_arrays, dst_coef_arrays);
     break;
+  case JXFORM_WIPE:
+    do_wipe(srcinfo, dstinfo, info->x_crop_offset, info->y_crop_offset,
+	    src_coef_arrays, info->drop_width, info->drop_height);
+    break;
   }
 }
 

transupp.h

@@ -1,7 +1,7 @@
 /*
  * transupp.h
  *
- * Copyright (C) 1997-2011, Thomas G. Lane, Guido Vollbeding.
+ * Copyright (C) 1997-2013, Thomas G. Lane, Guido Vollbeding.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
@@ -51,14 +51,17 @@
  *
  * We also offer a lossless-crop option, which discards data outside a given
  * image region but losslessly preserves what is inside.  Like the rotate and
- * flip transforms, lossless crop is restricted by the JPEG format: the upper
- * left corner of the selected region must fall on an iMCU boundary.  If this
- * does not hold for the given crop parameters, we silently move the upper left
- * corner up and/or left to make it so, simultaneously increasing the region
- * dimensions to keep the lower right crop corner unchanged.  (Thus, the
+ * flip transforms, lossless crop is restricted by the current JPEG format: the
+ * upper left corner of the selected region must fall on an iMCU boundary.  If
+ * this does not hold for the given crop parameters, we silently move the upper
+ * left corner up and/or left to make it so, simultaneously increasing the
+ * region dimensions to keep the lower right crop corner unchanged.  (Thus, the
  * output image covers at least the requested region, but may cover more.)
  * The adjustment of the region dimensions may be optionally disabled.
  *
+ * A complementary lossless-wipe option is provided to discard (gray out) data
+ * inside a given image region while losslessly preserving what is outside.
+ *
  * We also provide a lossless-resize option, which is kind of a lossless-crop
  * operation in the DCT coefficient block domain - it discards higher-order
  * coefficients and losslessly preserves lower-order coefficients of a
@@ -102,7 +105,8 @@ typedef enum {
 	JXFORM_TRANSVERSE,	/* transpose across UR-to-LL axis */
 	JXFORM_ROT_90,		/* 90-degree clockwise rotation */
 	JXFORM_ROT_180,		/* 180-degree rotation */
-	JXFORM_ROT_270		/* 270-degree clockwise (or 90 ccw) */
+	JXFORM_ROT_270,		/* 270-degree clockwise (or 90 ccw) */
+	JXFORM_WIPE		/* wipe */
 } JXFORM_CODE;
 
 /*
@@ -130,7 +134,7 @@ typedef struct {
   boolean perfect;		/* if TRUE, fail if partial MCUs are requested */
   boolean trim;			/* if TRUE, trim partial MCUs as needed */
   boolean force_grayscale;	/* if TRUE, convert color image to grayscale */
-  boolean crop;			/* if TRUE, crop source image */
+  boolean crop;			/* if TRUE, crop or wipe source image */
 
   /* Crop parameters: application need not set these unless crop is TRUE.
    * These can be filled in by jtransform_parse_crop_spec().
@@ -151,6 +155,8 @@ typedef struct {
   JDIMENSION output_height;
   JDIMENSION x_crop_offset;	/* destination crop offsets measured in iMCUs */
   JDIMENSION y_crop_offset;
+  JDIMENSION drop_width;	/* drop/wipe dimensions measured in iMCUs */
+  JDIMENSION drop_height;
   int iMCU_sample_width;	/* destination iMCU size */
   int iMCU_sample_height;
 } jpeg_transform_info;

usage.txt

@@ -80,8 +80,9 @@ The basic command line switches for cjpeg are:
 	-rgb		Create RGB JPEG file.
 			Using this switch suppresses the conversion from RGB
 			colorspace input to the default YCbCr JPEG colorspace.
-			Use this switch in combination with the -block N
-			switch (see below) for lossless JPEG coding.
+			You can use this switch in combination with the
+			-block N switch (see below) for lossless JPEG coding.
+			See also the -rgb1 switch below.
 
 	-optimize	Perform optimization of entropy encoding parameters.
 			Without this, default encoding parameters are used.
@@ -157,10 +158,10 @@ file size is about the same --- often a little smaller.
 
 Switches for advanced users:
 
-	-arithmetic	Use arithmetic coding.  CAUTION: arithmetic coded JPEG
-			is not yet widely implemented, so many decoders will
-			be unable to view an arithmetic coded JPEG file at
-			all.
+	-arithmetic	Use arithmetic coding.
+			CAUTION: arithmetic coded JPEG is not yet widely
+			implemented, so many decoders will be unable to
+			view an arithmetic coded JPEG file at all.
 
 	-block N	Set DCT block size.  All N from 1 to 16 are possible.
 			Default is 8 (baseline format).
@@ -175,6 +176,37 @@ Switches for advanced users:
 			decoders will be unable to view a SmartScale extended
 			JPEG file at all.
 
+	-rgb1		Create RGB JPEG file with reversible color transform.
+			Works like the -rgb switch (see above) and inserts a
+			simple reversible color transform into the processing
+			which significantly improves the compression.
+			Use this switch in combination with the -block N
+			switch (see above) for lossless JPEG coding.
+			CAUTION: A decoder with inverse color transform
+			support is required for this feature.  Reversible
+			color transform support is not yet widely implemented,
+			so many decoders will be unable to view a reversible
+			color transformed JPEG file at all.
+
+	-bgycc		Create big gamut YCC JPEG file.
+			In this type of encoding the color difference
+			components are quantized further by a factor of 2
+			compared to the normal Cb/Cr values, thus creating
+			space to allow larger color values with higher
+			saturation than the normal gamut limits to be encoded.
+			In order to compensate for the loss of color fidelity
+			compared to a normal YCC encoded file, the color
+			quantization tables can be adjusted accordingly.
+			For example, cjpeg -bgycc -quality 80,90 will give
+			similar results as cjpeg -quality 80.
+			CAUTION: For correct decompression a decoder with big
+			gamut YCC support (JFIF version 2) is required.
+			An old decoder may or may not display a big gamut YCC
+			encoded JPEG file, depending on JFIF version check
+			and corresponding warning/error configuration.
+			In case of a granted decompression the old decoder
+			will display the image with half saturated colors.
+
 	-dct int	Use integer DCT method (default).
 	-dct fast	Use fast integer DCT (less accurate).
 	-dct float	Use floating-point DCT method.
@@ -374,7 +406,8 @@ quality settings to make very small JPEG files; the percentage improvement
 is often a lot more than it is on larger files.  (At present, -optimize
 mode is always selected when generating progressive JPEG files.)
 
-GIF input files are no longer supported, to avoid the Unisys LZW patent.
+GIF input files are no longer supported, to avoid the Unisys LZW patent
+(now expired).
 (Conversion of GIF files to JPEG is usually a bad idea anyway.)
 
 
@@ -402,8 +435,9 @@ it may run out of memory even with -maxmemory 0.  In that case you can still
 decompress, with some loss of image quality, by specifying -onepass for
 one-pass quantization.
 
-To avoid the Unisys LZW patent, djpeg produces uncompressed GIF files.  These
-are larger than they should be, but are readable by standard GIF decoders.
+To avoid the Unisys LZW patent (now expired), djpeg produces uncompressed GIF
+files.  These are larger than they should be, but are readable by standard GIF
+decoders.
 
 
 HINTS FOR BOTH PROGRAMS
@@ -520,14 +554,20 @@ image region but losslessly preserves what is inside.  Like the rotate and
 flip transforms, lossless crop is restricted by the current JPEG format: the
 upper left corner of the selected region must fall on an iMCU boundary.  If
 this does not hold for the given crop parameters, we silently move the upper
-left corner up and/or left to make it so, simultaneously increasing the region
-dimensions to keep the lower right crop corner unchanged.  (Thus, the output
-image covers at least the requested region, but may cover more.)
+left corner up and/or left to make it so, simultaneously increasing the
+region dimensions to keep the lower right crop corner unchanged.  (Thus, the
+output image covers at least the requested region, but may cover more.)
+The adjustment of the region dimensions may be optionally disabled.
 
 The image can be losslessly cropped by giving the switch:
 	-crop WxH+X+Y	Crop to a rectangular subarea of width W, height H
 			starting at point X,Y.
 
+A complementary lossless-wipe option is provided to discard (gray out) data
+inside a given image region while losslessly preserving what is outside:
+	-wipe WxH+X+Y	Wipe (gray out) a rectangular subarea of
+			width W, height H starting at point X,Y.
+
 Other not-strictly-lossless transformation switches are:
 
 	-grayscale	Force grayscale output.