Merge branch 'master' into dev

djpeg.c

@@ -31,7 +31,6 @@
 #include "cdjpeg.h"             /* Common decls for cjpeg/djpeg applications */
 #include "jversion.h"           /* for version message */
 #include "jconfigint.h"
-#include "wrppm.h"
 
 #ifndef HAVE_STDLIB_H           /* <stdlib.h> should declare free() */
 extern void free (void *ptr);
@@ -179,6 +178,7 @@ usage (void)
 
   fprintf(stderr, "  -skip Y0,Y1    Decompress all rows except those between Y0 and Y1 (inclusive)\n");
   fprintf(stderr, "  -crop WxH+X+Y  Decompress only a rectangular subregion of the image\n");
+  fprintf(stderr, "                 [requires PBMPLUS (PPM/PGM), GIF, or Targa output format]\n");
   fprintf(stderr, "  -verbose  or  -debug   Emit debug output\n");
   fprintf(stderr, "  -version       Print version information and exit\n");
   exit(EXIT_FAILURE);
@@ -727,9 +727,10 @@ main (int argc, char **argv)
     }
 
     jpeg_crop_scanline(&cinfo, &crop_x, &crop_width);
-    ((ppm_dest_ptr) dest_mgr)->buffer_width = cinfo.output_width *
-                                              cinfo.out_color_components *
-                                              sizeof(JSAMPLE);
+    if (dest_mgr->calc_buffer_dimensions)
+      (*dest_mgr->calc_buffer_dimensions) (&cinfo, dest_mgr);
+    else
+      ERREXIT(&cinfo, JERR_UNSUPPORTED_FORMAT);
 
     /* Write output file header.  This is a hack to ensure that the destination
      * manager creates an output image of the proper size.