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The Independent JPEG Group's JPEG software v6

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This commit is contained in:
Thomas G. Lane
1995-08-02 00:00:00 +00:00
committed by DRC
parent a8b67c4fbb
commit bc79e0680a
88 changed files with 9850 additions and 3723 deletions
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165
djpeg.c
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@@ -1,7 +1,7 @@
/*
* djpeg.c
*
* Copyright (C) 1991-1994, Thomas G. Lane.
* Copyright (C) 1991-1995, Thomas G. Lane.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
@@ -26,15 +26,7 @@
#include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */
#include "jversion.h" /* for version message */
#include <ctype.h> /* to declare isupper(),tolower(),isprint() */
#ifdef NEED_SIGNAL_CATCHER
#include <signal.h> /* to declare signal() */
#endif
#ifdef USE_SETMODE
#include <fcntl.h> /* to declare setmode()'s parameter macros */
/* If you have setmode() but not <io.h>, just delete this line: */
#include <io.h> /* to declare setmode() */
#endif
#include <ctype.h> /* to declare isprint() */
#ifdef USE_CCOMMAND /* command-line reader for Macintosh */
#ifdef __MWERKS__
@@ -45,32 +37,6 @@
#endif
#endif
#ifdef DONT_USE_B_MODE /* define mode parameters for fopen() */
#define READ_BINARY "r"
#define WRITE_BINARY "w"
#else
#define READ_BINARY "rb"
#define WRITE_BINARY "wb"
#endif
#ifndef EXIT_FAILURE /* define exit() codes if not provided */
#define EXIT_FAILURE 1
#endif
#ifndef EXIT_SUCCESS
#ifdef VMS
#define EXIT_SUCCESS 1 /* VMS is very nonstandard */
#else
#define EXIT_SUCCESS 0
#endif
#endif
#ifndef EXIT_WARNING
#ifdef VMS
#define EXIT_WARNING 1 /* VMS is very nonstandard */
#else
#define EXIT_WARNING 2
#endif
#endif
/* Create the add-on message string table. */
@@ -106,59 +72,6 @@ typedef enum {
static IMAGE_FORMATS requested_fmt;
/*
* Signal catcher to ensure that temporary files are removed before aborting.
* NB: for Amiga Manx C this is actually a global routine named _abort();
* we put "#define signal_catcher _abort" in jconfig.h. Talk about bogus...
*/
#ifdef NEED_SIGNAL_CATCHER
static j_common_ptr sig_cinfo;
GLOBAL void
signal_catcher (int signum)
{
if (sig_cinfo != NULL) {
if (sig_cinfo->err != NULL) /* turn off trace output */
sig_cinfo->err->trace_level = 0;
jpeg_destroy(sig_cinfo); /* clean up memory allocation & temp files */
}
exit(EXIT_FAILURE);
}
#endif
/*
* Optional routine to display a percent-done figure on stderr.
*/
#ifdef PROGRESS_REPORT
METHODDEF void
progress_monitor (j_common_ptr cinfo)
{
cd_progress_ptr prog = (cd_progress_ptr) cinfo->progress;
int total_passes = prog->pub.total_passes + prog->total_extra_passes;
int percent_done = (int) (prog->pub.pass_counter*100L/prog->pub.pass_limit);
if (percent_done != prog->percent_done) {
prog->percent_done = percent_done;
if (total_passes > 1) {
fprintf(stderr, "\rPass %d/%d: %3d%% ",
prog->pub.completed_passes + prog->completed_extra_passes + 1,
total_passes, percent_done);
} else {
fprintf(stderr, "\r %3d%% ", percent_done);
}
fflush(stderr);
}
}
#endif
/*
* Argument-parsing code.
* The switch parser is designed to be useful with DOS-style command line
@@ -244,31 +157,6 @@ usage (void)
}
LOCAL boolean
keymatch (char * arg, const char * keyword, int minchars)
/* Case-insensitive matching of (possibly abbreviated) keyword switches. */
/* keyword is the constant keyword (must be lower case already), */
/* minchars is length of minimum legal abbreviation. */
{
register int ca, ck;
register int nmatched = 0;
while ((ca = *arg++) != '\0') {
if ((ck = *keyword++) == '\0')
return FALSE; /* arg longer than keyword, no good */
if (isupper(ca)) /* force arg to lcase (assume ck is already) */
ca = tolower(ca);
if (ca != ck)
return FALSE; /* no good */
nmatched++; /* count matched characters */
}
/* reached end of argument; fail if it's too short for unique abbrev */
if (nmatched < minchars)
return FALSE;
return TRUE; /* A-OK */
}
LOCAL int
parse_switches (j_decompress_ptr cinfo, int argc, char **argv,
int last_file_arg_seen, boolean for_real)
@@ -561,11 +449,7 @@ main (int argc, char **argv)
/* Now safe to enable signal catcher. */
#ifdef NEED_SIGNAL_CATCHER
sig_cinfo = (j_common_ptr) &cinfo;
signal(SIGINT, signal_catcher);
#ifdef SIGTERM /* not all systems have SIGTERM */
signal(SIGTERM, signal_catcher);
#endif
enable_signal_catcher((j_common_ptr) &cinfo);
#endif
/* Scan command line to find file names. */
@@ -610,17 +494,7 @@ main (int argc, char **argv)
}
} else {
/* default input file is stdin */
#ifdef USE_SETMODE /* need to hack file mode? */
setmode(fileno(stdin), O_BINARY);
#endif
#ifdef USE_FDOPEN /* need to re-open in binary mode? */
if ((input_file = fdopen(fileno(stdin), READ_BINARY)) == NULL) {
fprintf(stderr, "%s: can't open stdin\n", progname);
exit(EXIT_FAILURE);
}
#else
input_file = stdin;
#endif
input_file = read_stdin();
}
/* Open the output file. */
@@ -631,28 +505,11 @@ main (int argc, char **argv)
}
} else {
/* default output file is stdout */
#ifdef USE_SETMODE /* need to hack file mode? */
setmode(fileno(stdout), O_BINARY);
#endif
#ifdef USE_FDOPEN /* need to re-open in binary mode? */
if ((output_file = fdopen(fileno(stdout), WRITE_BINARY)) == NULL) {
fprintf(stderr, "%s: can't open stdout\n", progname);
exit(EXIT_FAILURE);
}
#else
output_file = stdout;
#endif
output_file = write_stdout();
}
#ifdef PROGRESS_REPORT
/* Enable progress display, unless trace output is on */
if (jerr.trace_level == 0) {
progress.pub.progress_monitor = progress_monitor;
progress.completed_extra_passes = 0;
progress.total_extra_passes = 0;
progress.percent_done = -1;
cinfo.progress = &progress.pub;
}
start_progress_monitor((j_common_ptr) &cinfo, &progress);
#endif
/* Specify data source for decompression */
@@ -703,7 +560,7 @@ main (int argc, char **argv)
dest_mgr->output_file = output_file;
/* Start decompressor */
jpeg_start_decompress(&cinfo);
(void) jpeg_start_decompress(&cinfo);
/* Write output file header */
(*dest_mgr->start_output) (&cinfo, dest_mgr);
@@ -727,7 +584,7 @@ main (int argc, char **argv)
* of lifespan JPOOL_IMAGE; it needs to finish before releasing memory.
*/
(*dest_mgr->finish_output) (&cinfo, dest_mgr);
jpeg_finish_decompress(&cinfo);
(void) jpeg_finish_decompress(&cinfo);
jpeg_destroy_decompress(&cinfo);
/* Close files, if we opened them */
@@ -737,11 +594,7 @@ main (int argc, char **argv)
fclose(output_file);
#ifdef PROGRESS_REPORT
/* Clear away progress display */
if (jerr.trace_level == 0) {
fprintf(stderr, "\r \r");
fflush(stderr);
}
end_progress_monitor((j_common_ptr) &cinfo);
#endif
/* All done. */