You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
738 lines
24 KiB
738 lines
24 KiB
/*
|
|
* jpegtran.c
|
|
*
|
|
* This file was part of the Independent JPEG Group's software:
|
|
* Copyright (C) 1995-2019, Thomas G. Lane, Guido Vollbeding.
|
|
* libjpeg-turbo Modifications:
|
|
* Copyright (C) 2010, 2014, 2017, 2019-2020, D. R. Commander.
|
|
* For conditions of distribution and use, see the accompanying README.ijg
|
|
* file.
|
|
*
|
|
* This file contains a command-line user interface for JPEG transcoding.
|
|
* It is very similar to cjpeg.c, and partly to djpeg.c, but provides
|
|
* lossless transcoding between different JPEG file formats. It also
|
|
* provides some lossless and sort-of-lossless transformations of JPEG data.
|
|
*/
|
|
|
|
#include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */
|
|
#include "transupp.h" /* Support routines for jpegtran */
|
|
#include "jversion.h" /* for version message */
|
|
#include "jconfigint.h"
|
|
|
|
#ifdef USE_CCOMMAND /* command-line reader for Macintosh */
|
|
#ifdef __MWERKS__
|
|
#include <SIOUX.h> /* Metrowerks needs this */
|
|
#include <console.h> /* ... and this */
|
|
#endif
|
|
#ifdef THINK_C
|
|
#include <console.h> /* Think declares it here */
|
|
#endif
|
|
#endif
|
|
|
|
|
|
/*
|
|
* Argument-parsing code.
|
|
* The switch parser is designed to be useful with DOS-style command line
|
|
* syntax, ie, intermixed switches and file names, where only the switches
|
|
* to the left of a given file name affect processing of that file.
|
|
* The main program in this file doesn't actually use this capability...
|
|
*/
|
|
|
|
|
|
static const char *progname; /* program name for error messages */
|
|
static char *icc_filename; /* for -icc switch */
|
|
static JDIMENSION max_scans; /* for -maxscans switch */
|
|
static char *outfilename; /* for -outfile switch */
|
|
static char *dropfilename; /* for -drop switch */
|
|
static boolean report; /* for -report switch */
|
|
static boolean strict; /* for -strict switch */
|
|
static JCOPY_OPTION copyoption; /* -copy switch */
|
|
static jpeg_transform_info transformoption; /* image transformation options */
|
|
|
|
|
|
LOCAL(void)
|
|
usage(void)
|
|
/* complain about bad command line */
|
|
{
|
|
fprintf(stderr, "usage: %s [switches] ", progname);
|
|
#ifdef TWO_FILE_COMMANDLINE
|
|
fprintf(stderr, "inputfile outputfile\n");
|
|
#else
|
|
fprintf(stderr, "[inputfile]\n");
|
|
#endif
|
|
|
|
fprintf(stderr, "Switches (names may be abbreviated):\n");
|
|
fprintf(stderr, " -copy none Copy no extra markers from source file\n");
|
|
fprintf(stderr, " -copy comments Copy only comment markers (default)\n");
|
|
fprintf(stderr, " -copy all Copy all extra markers\n");
|
|
#ifdef ENTROPY_OPT_SUPPORTED
|
|
fprintf(stderr, " -optimize Optimize Huffman table (smaller file, but slow compression)\n");
|
|
#endif
|
|
#ifdef C_PROGRESSIVE_SUPPORTED
|
|
fprintf(stderr, " -progressive Create progressive JPEG file\n");
|
|
#endif
|
|
fprintf(stderr, "Switches for modifying the image:\n");
|
|
#if TRANSFORMS_SUPPORTED
|
|
fprintf(stderr, " -crop WxH+X+Y Crop to a rectangular region\n");
|
|
fprintf(stderr, " -drop +X+Y filename Drop (insert) another image\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
|
|
#if TRANSFORMS_SUPPORTED
|
|
fprintf(stderr, " -transpose Transpose image\n");
|
|
fprintf(stderr, " -transverse Transverse transpose image\n");
|
|
fprintf(stderr, " -trim Drop non-transformable edge blocks\n");
|
|
fprintf(stderr, " with -drop: Requantize drop file to match source file\n");
|
|
fprintf(stderr, " -wipe WxH+X+Y Wipe (gray out) a rectangular region\n");
|
|
#endif
|
|
fprintf(stderr, "Switches for advanced users:\n");
|
|
#ifdef C_ARITH_CODING_SUPPORTED
|
|
fprintf(stderr, " -arithmetic Use arithmetic coding\n");
|
|
#endif
|
|
fprintf(stderr, " -icc FILE Embed ICC profile contained in FILE\n");
|
|
fprintf(stderr, " -restart N Set restart interval in rows, or in blocks with B\n");
|
|
fprintf(stderr, " -maxmemory N Maximum memory to use (in kbytes)\n");
|
|
fprintf(stderr, " -maxscans N Maximum number of scans to allow in input file\n");
|
|
fprintf(stderr, " -outfile name Specify name for output file\n");
|
|
fprintf(stderr, " -report Report transformation progress\n");
|
|
fprintf(stderr, " -strict Treat all warnings as fatal\n");
|
|
fprintf(stderr, " -verbose or -debug Emit debug output\n");
|
|
fprintf(stderr, " -version Print version information and exit\n");
|
|
fprintf(stderr, "Switches for wizards:\n");
|
|
#ifdef C_MULTISCAN_FILES_SUPPORTED
|
|
fprintf(stderr, " -scans FILE Create multi-scan JPEG per script FILE\n");
|
|
#endif
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
|
|
LOCAL(void)
|
|
select_transform(JXFORM_CODE transform)
|
|
/* Silly little routine to detect multiple transform options,
|
|
* which we can't handle.
|
|
*/
|
|
{
|
|
#if TRANSFORMS_SUPPORTED
|
|
if (transformoption.transform == JXFORM_NONE ||
|
|
transformoption.transform == transform) {
|
|
transformoption.transform = transform;
|
|
} else {
|
|
fprintf(stderr, "%s: can only do one image transformation at a time\n",
|
|
progname);
|
|
usage();
|
|
}
|
|
#else
|
|
fprintf(stderr, "%s: sorry, image transformation was not compiled\n",
|
|
progname);
|
|
exit(EXIT_FAILURE);
|
|
#endif
|
|
}
|
|
|
|
|
|
LOCAL(int)
|
|
parse_switches(j_compress_ptr cinfo, int argc, char **argv,
|
|
int last_file_arg_seen, boolean for_real)
|
|
/* Parse optional switches.
|
|
* Returns argv[] index of first file-name argument (== argc if none).
|
|
* Any file names with indexes <= last_file_arg_seen are ignored;
|
|
* they have presumably been processed in a previous iteration.
|
|
* (Pass 0 for last_file_arg_seen on the first or only iteration.)
|
|
* for_real is FALSE on the first (dummy) pass; we may skip any expensive
|
|
* processing.
|
|
*/
|
|
{
|
|
int argn;
|
|
char *arg;
|
|
boolean simple_progressive;
|
|
char *scansarg = NULL; /* saves -scans parm if any */
|
|
|
|
/* Set up default JPEG parameters. */
|
|
simple_progressive = FALSE;
|
|
icc_filename = NULL;
|
|
max_scans = 0;
|
|
outfilename = NULL;
|
|
report = FALSE;
|
|
strict = FALSE;
|
|
copyoption = JCOPYOPT_DEFAULT;
|
|
transformoption.transform = JXFORM_NONE;
|
|
transformoption.perfect = FALSE;
|
|
transformoption.trim = FALSE;
|
|
transformoption.force_grayscale = FALSE;
|
|
transformoption.crop = FALSE;
|
|
transformoption.slow_hflip = FALSE;
|
|
cinfo->err->trace_level = 0;
|
|
|
|
/* Scan command line options, adjust parameters */
|
|
|
|
for (argn = 1; argn < argc; argn++) {
|
|
arg = argv[argn];
|
|
if (*arg != '-') {
|
|
/* Not a switch, must be a file name argument */
|
|
if (argn <= last_file_arg_seen) {
|
|
outfilename = NULL; /* -outfile applies to just one input file */
|
|
continue; /* ignore this name if previously processed */
|
|
}
|
|
break; /* else done parsing switches */
|
|
}
|
|
arg++; /* advance past switch marker character */
|
|
|
|
if (keymatch(arg, "arithmetic", 1)) {
|
|
/* Use arithmetic coding. */
|
|
#ifdef C_ARITH_CODING_SUPPORTED
|
|
cinfo->arith_code = TRUE;
|
|
#else
|
|
fprintf(stderr, "%s: sorry, arithmetic coding not supported\n",
|
|
progname);
|
|
exit(EXIT_FAILURE);
|
|
#endif
|
|
|
|
} else if (keymatch(arg, "copy", 2)) {
|
|
/* Select which extra markers to copy. */
|
|
if (++argn >= argc) /* advance to next argument */
|
|
usage();
|
|
if (keymatch(argv[argn], "none", 1)) {
|
|
copyoption = JCOPYOPT_NONE;
|
|
} else if (keymatch(argv[argn], "comments", 1)) {
|
|
copyoption = JCOPYOPT_COMMENTS;
|
|
} else if (keymatch(argv[argn], "all", 1)) {
|
|
copyoption = JCOPYOPT_ALL;
|
|
} else
|
|
usage();
|
|
|
|
} else if (keymatch(arg, "crop", 2)) {
|
|
/* Perform lossless cropping. */
|
|
#if TRANSFORMS_SUPPORTED
|
|
if (++argn >= argc) /* advance to next argument */
|
|
usage();
|
|
if (transformoption.crop /* reject multiple crop/drop/wipe requests */ ||
|
|
!jtransform_parse_crop_spec(&transformoption, argv[argn])) {
|
|
fprintf(stderr, "%s: bogus -crop argument '%s'\n",
|
|
progname, argv[argn]);
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
#else
|
|
select_transform(JXFORM_NONE); /* force an error */
|
|
#endif
|
|
|
|
} else if (keymatch(arg, "drop", 2)) {
|
|
#if TRANSFORMS_SUPPORTED
|
|
if (++argn >= argc) /* advance to next argument */
|
|
usage();
|
|
if (transformoption.crop /* reject multiple crop/drop/wipe requests */ ||
|
|
!jtransform_parse_crop_spec(&transformoption, argv[argn]) ||
|
|
transformoption.crop_width_set != JCROP_UNSET ||
|
|
transformoption.crop_height_set != JCROP_UNSET) {
|
|
fprintf(stderr, "%s: bogus -drop argument '%s'\n",
|
|
progname, argv[argn]);
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
if (++argn >= argc) /* advance to next argument */
|
|
usage();
|
|
dropfilename = argv[argn];
|
|
select_transform(JXFORM_DROP);
|
|
#else
|
|
select_transform(JXFORM_NONE); /* force an error */
|
|
#endif
|
|
|
|
} else if (keymatch(arg, "debug", 1) || keymatch(arg, "verbose", 1)) {
|
|
/* Enable debug printouts. */
|
|
/* On first -d, print version identification */
|
|
static boolean printed_version = FALSE;
|
|
|
|
if (!printed_version) {
|
|
fprintf(stderr, "%s version %s (build %s)\n",
|
|
PACKAGE_NAME, VERSION, BUILD);
|
|
fprintf(stderr, "%s\n\n", JCOPYRIGHT);
|
|
fprintf(stderr, "Emulating The Independent JPEG Group's software, version %s\n\n",
|
|
JVERSION);
|
|
printed_version = TRUE;
|
|
}
|
|
cinfo->err->trace_level++;
|
|
|
|
} else if (keymatch(arg, "version", 4)) {
|
|
fprintf(stderr, "%s version %s (build %s)\n",
|
|
PACKAGE_NAME, VERSION, BUILD);
|
|
exit(EXIT_SUCCESS);
|
|
|
|
} else if (keymatch(arg, "flip", 1)) {
|
|
/* Mirror left-right or top-bottom. */
|
|
if (++argn >= argc) /* advance to next argument */
|
|
usage();
|
|
if (keymatch(argv[argn], "horizontal", 1))
|
|
select_transform(JXFORM_FLIP_H);
|
|
else if (keymatch(argv[argn], "vertical", 1))
|
|
select_transform(JXFORM_FLIP_V);
|
|
else
|
|
usage();
|
|
|
|
} else if (keymatch(arg, "grayscale", 1) ||
|
|
keymatch(arg, "greyscale", 1)) {
|
|
/* Force to grayscale. */
|
|
#if TRANSFORMS_SUPPORTED
|
|
transformoption.force_grayscale = TRUE;
|
|
#else
|
|
select_transform(JXFORM_NONE); /* force an error */
|
|
#endif
|
|
|
|
} else if (keymatch(arg, "icc", 1)) {
|
|
/* Set ICC filename. */
|
|
if (++argn >= argc) /* advance to next argument */
|
|
usage();
|
|
icc_filename = argv[argn];
|
|
|
|
} else if (keymatch(arg, "maxmemory", 3)) {
|
|
/* Maximum memory in Kb (or Mb with 'm'). */
|
|
long lval;
|
|
char ch = 'x';
|
|
|
|
if (++argn >= argc) /* advance to next argument */
|
|
usage();
|
|
if (sscanf(argv[argn], "%ld%c", &lval, &ch) < 1)
|
|
usage();
|
|
if (ch == 'm' || ch == 'M')
|
|
lval *= 1000L;
|
|
cinfo->mem->max_memory_to_use = lval * 1000L;
|
|
|
|
} else if (keymatch(arg, "maxscans", 4)) {
|
|
if (++argn >= argc) /* advance to next argument */
|
|
usage();
|
|
if (sscanf(argv[argn], "%u", &max_scans) != 1)
|
|
usage();
|
|
|
|
} else if (keymatch(arg, "optimize", 1) || keymatch(arg, "optimise", 1)) {
|
|
/* Enable entropy parm optimization. */
|
|
#ifdef ENTROPY_OPT_SUPPORTED
|
|
cinfo->optimize_coding = TRUE;
|
|
#else
|
|
fprintf(stderr, "%s: sorry, entropy optimization was not compiled\n",
|
|
progname);
|
|
exit(EXIT_FAILURE);
|
|
#endif
|
|
|
|
} else if (keymatch(arg, "outfile", 4)) {
|
|
/* Set output file name. */
|
|
if (++argn >= argc) /* advance to next argument */
|
|
usage();
|
|
outfilename = argv[argn]; /* save it away for later use */
|
|
|
|
} else if (keymatch(arg, "perfect", 2)) {
|
|
/* Fail if there is any partial edge MCUs that the transform can't
|
|
* handle. */
|
|
transformoption.perfect = TRUE;
|
|
|
|
} else if (keymatch(arg, "progressive", 2)) {
|
|
/* Select simple progressive mode. */
|
|
#ifdef C_PROGRESSIVE_SUPPORTED
|
|
simple_progressive = TRUE;
|
|
/* We must postpone execution until num_components is known. */
|
|
#else
|
|
fprintf(stderr, "%s: sorry, progressive output was not compiled\n",
|
|
progname);
|
|
exit(EXIT_FAILURE);
|
|
#endif
|
|
|
|
} else if (keymatch(arg, "report", 3)) {
|
|
report = TRUE;
|
|
|
|
} else if (keymatch(arg, "restart", 1)) {
|
|
/* Restart interval in MCU rows (or in MCUs with 'b'). */
|
|
long lval;
|
|
char ch = 'x';
|
|
|
|
if (++argn >= argc) /* advance to next argument */
|
|
usage();
|
|
if (sscanf(argv[argn], "%ld%c", &lval, &ch) < 1)
|
|
usage();
|
|
if (lval < 0 || lval > 65535L)
|
|
usage();
|
|
if (ch == 'b' || ch == 'B') {
|
|
cinfo->restart_interval = (unsigned int)lval;
|
|
cinfo->restart_in_rows = 0; /* else prior '-restart n' overrides me */
|
|
} else {
|
|
cinfo->restart_in_rows = (int)lval;
|
|
/* restart_interval will be computed during startup */
|
|
}
|
|
|
|
} else if (keymatch(arg, "rotate", 2)) {
|
|
/* Rotate 90, 180, or 270 degrees (measured clockwise). */
|
|
if (++argn >= argc) /* advance to next argument */
|
|
usage();
|
|
if (keymatch(argv[argn], "90", 2))
|
|
select_transform(JXFORM_ROT_90);
|
|
else if (keymatch(argv[argn], "180", 3))
|
|
select_transform(JXFORM_ROT_180);
|
|
else if (keymatch(argv[argn], "270", 3))
|
|
select_transform(JXFORM_ROT_270);
|
|
else
|
|
usage();
|
|
|
|
} else if (keymatch(arg, "scans", 1)) {
|
|
/* Set scan script. */
|
|
#ifdef C_MULTISCAN_FILES_SUPPORTED
|
|
if (++argn >= argc) /* advance to next argument */
|
|
usage();
|
|
scansarg = argv[argn];
|
|
/* We must postpone reading the file in case -progressive appears. */
|
|
#else
|
|
fprintf(stderr, "%s: sorry, multi-scan output was not compiled\n",
|
|
progname);
|
|
exit(EXIT_FAILURE);
|
|
#endif
|
|
|
|
} else if (keymatch(arg, "strict", 2)) {
|
|
strict = TRUE;
|
|
|
|
} else if (keymatch(arg, "transpose", 1)) {
|
|
/* Transpose (across UL-to-LR axis). */
|
|
select_transform(JXFORM_TRANSPOSE);
|
|
|
|
} else if (keymatch(arg, "transverse", 6)) {
|
|
/* Transverse transpose (across UR-to-LL axis). */
|
|
select_transform(JXFORM_TRANSVERSE);
|
|
|
|
} else if (keymatch(arg, "trim", 3)) {
|
|
/* 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/drop/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 */
|
|
}
|
|
}
|
|
|
|
/* Post-switch-scanning cleanup */
|
|
|
|
if (for_real) {
|
|
|
|
#ifdef C_PROGRESSIVE_SUPPORTED
|
|
if (simple_progressive) /* process -progressive; -scans can override */
|
|
jpeg_simple_progression(cinfo);
|
|
#endif
|
|
|
|
#ifdef C_MULTISCAN_FILES_SUPPORTED
|
|
if (scansarg != NULL) /* process -scans if it was present */
|
|
if (!read_scan_script(cinfo, scansarg))
|
|
usage();
|
|
#endif
|
|
}
|
|
|
|
return argn; /* return index of next arg (file name) */
|
|
}
|
|
|
|
|
|
METHODDEF(void)
|
|
my_emit_message(j_common_ptr cinfo, int msg_level)
|
|
{
|
|
if (msg_level < 0) {
|
|
/* Treat warning as fatal */
|
|
cinfo->err->error_exit(cinfo);
|
|
} else {
|
|
if (cinfo->err->trace_level >= msg_level)
|
|
cinfo->err->output_message(cinfo);
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* The main program.
|
|
*/
|
|
|
|
int
|
|
#ifdef GTEST
|
|
jpegtran(int argc, char **argv)
|
|
#else
|
|
main(int argc, char **argv)
|
|
#endif
|
|
{
|
|
struct jpeg_decompress_struct srcinfo;
|
|
#if TRANSFORMS_SUPPORTED
|
|
struct jpeg_decompress_struct dropinfo;
|
|
struct jpeg_error_mgr jdroperr;
|
|
FILE *drop_file;
|
|
#endif
|
|
struct jpeg_compress_struct dstinfo;
|
|
struct jpeg_error_mgr jsrcerr, jdsterr;
|
|
struct cdjpeg_progress_mgr src_progress, dst_progress;
|
|
jvirt_barray_ptr *src_coef_arrays;
|
|
jvirt_barray_ptr *dst_coef_arrays;
|
|
int file_index;
|
|
/* We assume all-in-memory processing and can therefore use only a
|
|
* single file pointer for sequential input and output operation.
|
|
*/
|
|
FILE *fp;
|
|
FILE *icc_file;
|
|
JOCTET *icc_profile = NULL;
|
|
long icc_len = 0;
|
|
|
|
/* On Mac, fetch a command line. */
|
|
#ifdef USE_CCOMMAND
|
|
argc = ccommand(&argv);
|
|
#endif
|
|
|
|
progname = argv[0];
|
|
if (progname == NULL || progname[0] == 0)
|
|
progname = "jpegtran"; /* in case C library doesn't provide it */
|
|
|
|
/* Initialize the JPEG decompression object with default error handling. */
|
|
srcinfo.err = jpeg_std_error(&jsrcerr);
|
|
jpeg_create_decompress(&srcinfo);
|
|
/* Initialize the JPEG compression object with default error handling. */
|
|
dstinfo.err = jpeg_std_error(&jdsterr);
|
|
jpeg_create_compress(&dstinfo);
|
|
|
|
/* Scan command line to find file names.
|
|
* It is convenient to use just one switch-parsing routine, but the switch
|
|
* values read here are mostly ignored; we will rescan the switches after
|
|
* opening the input file. Also note that most of the switches affect the
|
|
* destination JPEG object, so we parse into that and then copy over what
|
|
* needs to affect the source too.
|
|
*/
|
|
|
|
file_index = parse_switches(&dstinfo, argc, argv, 0, FALSE);
|
|
jsrcerr.trace_level = jdsterr.trace_level;
|
|
srcinfo.mem->max_memory_to_use = dstinfo.mem->max_memory_to_use;
|
|
|
|
if (strict)
|
|
jsrcerr.emit_message = my_emit_message;
|
|
|
|
#ifdef TWO_FILE_COMMANDLINE
|
|
/* Must have either -outfile switch or explicit output file name */
|
|
if (outfilename == NULL) {
|
|
if (file_index != argc - 2) {
|
|
fprintf(stderr, "%s: must name one input and one output file\n",
|
|
progname);
|
|
usage();
|
|
}
|
|
outfilename = argv[file_index + 1];
|
|
} else {
|
|
if (file_index != argc - 1) {
|
|
fprintf(stderr, "%s: must name one input and one output file\n",
|
|
progname);
|
|
usage();
|
|
}
|
|
}
|
|
#else
|
|
/* Unix style: expect zero or one file name */
|
|
if (file_index < argc - 1) {
|
|
fprintf(stderr, "%s: only one input file\n", progname);
|
|
usage();
|
|
}
|
|
#endif /* TWO_FILE_COMMANDLINE */
|
|
|
|
/* Open the input file. */
|
|
if (file_index < argc) {
|
|
if ((fp = fopen(argv[file_index], READ_BINARY)) == NULL) {
|
|
fprintf(stderr, "%s: can't open %s for reading\n", progname,
|
|
argv[file_index]);
|
|
return EXIT_FAILURE;
|
|
}
|
|
} else {
|
|
/* default input file is stdin */
|
|
fp = read_stdin();
|
|
}
|
|
|
|
if (icc_filename != NULL) {
|
|
if ((icc_file = fopen(icc_filename, READ_BINARY)) == NULL) {
|
|
fprintf(stderr, "%s: can't open %s\n", progname, icc_filename);
|
|
return EXIT_FAILURE;
|
|
}
|
|
if (fseek(icc_file, 0, SEEK_END) < 0 ||
|
|
(icc_len = ftell(icc_file)) < 1 ||
|
|
fseek(icc_file, 0, SEEK_SET) < 0) {
|
|
fprintf(stderr, "%s: can't determine size of %s\n", progname,
|
|
icc_filename);
|
|
return EXIT_FAILURE;
|
|
}
|
|
if ((icc_profile = (JOCTET *)malloc(icc_len)) == NULL) {
|
|
fprintf(stderr, "%s: can't allocate memory for ICC profile\n", progname);
|
|
fclose(icc_file);
|
|
return EXIT_FAILURE;
|
|
}
|
|
if (fread(icc_profile, icc_len, 1, icc_file) < 1) {
|
|
fprintf(stderr, "%s: can't read ICC profile from %s\n", progname,
|
|
icc_filename);
|
|
free(icc_profile);
|
|
fclose(icc_file);
|
|
return EXIT_FAILURE;
|
|
}
|
|
fclose(icc_file);
|
|
if (copyoption == JCOPYOPT_ALL)
|
|
copyoption = JCOPYOPT_ALL_EXCEPT_ICC;
|
|
}
|
|
|
|
if (report) {
|
|
start_progress_monitor((j_common_ptr)&dstinfo, &dst_progress);
|
|
dst_progress.report = report;
|
|
}
|
|
if (report || max_scans != 0) {
|
|
start_progress_monitor((j_common_ptr)&srcinfo, &src_progress);
|
|
src_progress.report = report;
|
|
src_progress.max_scans = max_scans;
|
|
}
|
|
#if TRANSFORMS_SUPPORTED
|
|
/* Open the drop file. */
|
|
if (dropfilename != NULL) {
|
|
if ((drop_file = fopen(dropfilename, READ_BINARY)) == NULL) {
|
|
fprintf(stderr, "%s: can't open %s for reading\n", progname,
|
|
dropfilename);
|
|
return EXIT_FAILURE;
|
|
}
|
|
dropinfo.err = jpeg_std_error(&jdroperr);
|
|
jpeg_create_decompress(&dropinfo);
|
|
jpeg_stdio_src(&dropinfo, drop_file);
|
|
} else {
|
|
drop_file = NULL;
|
|
}
|
|
#endif
|
|
|
|
/* Specify data source for decompression */
|
|
jpeg_stdio_src(&srcinfo, fp);
|
|
|
|
/* Enable saving of extra markers that we want to copy */
|
|
jcopy_markers_setup(&srcinfo, copyoption);
|
|
|
|
/* Read file header */
|
|
(void)jpeg_read_header(&srcinfo, TRUE);
|
|
|
|
#if TRANSFORMS_SUPPORTED
|
|
if (dropfilename != NULL) {
|
|
(void)jpeg_read_header(&dropinfo, TRUE);
|
|
transformoption.crop_width = dropinfo.image_width;
|
|
transformoption.crop_width_set = JCROP_POS;
|
|
transformoption.crop_height = dropinfo.image_height;
|
|
transformoption.crop_height_set = JCROP_POS;
|
|
transformoption.drop_ptr = &dropinfo;
|
|
}
|
|
#endif
|
|
|
|
/* Any space needed by a transform option must be requested before
|
|
* jpeg_read_coefficients so that memory allocation will be done right.
|
|
*/
|
|
#if TRANSFORMS_SUPPORTED
|
|
/* Fail right away if -perfect is given and transformation is not perfect.
|
|
*/
|
|
if (!jtransform_request_workspace(&srcinfo, &transformoption)) {
|
|
fprintf(stderr, "%s: transformation is not perfect\n", progname);
|
|
return EXIT_FAILURE;
|
|
}
|
|
#endif
|
|
|
|
/* Read source file as DCT coefficients */
|
|
src_coef_arrays = jpeg_read_coefficients(&srcinfo);
|
|
|
|
#if TRANSFORMS_SUPPORTED
|
|
if (dropfilename != NULL) {
|
|
transformoption.drop_coef_arrays = jpeg_read_coefficients(&dropinfo);
|
|
}
|
|
#endif
|
|
|
|
/* Initialize destination compression parameters from source values */
|
|
jpeg_copy_critical_parameters(&srcinfo, &dstinfo);
|
|
|
|
/* Adjust destination parameters if required by transform options;
|
|
* also find out which set of coefficient arrays will hold the output.
|
|
*/
|
|
#if TRANSFORMS_SUPPORTED
|
|
dst_coef_arrays = jtransform_adjust_parameters(&srcinfo, &dstinfo,
|
|
src_coef_arrays,
|
|
&transformoption);
|
|
#else
|
|
dst_coef_arrays = src_coef_arrays;
|
|
#endif
|
|
|
|
/* Close input file, if we opened it.
|
|
* Note: we assume that jpeg_read_coefficients consumed all input
|
|
* until JPEG_REACHED_EOI, and that jpeg_finish_decompress will
|
|
* only consume more while (!cinfo->inputctl->eoi_reached).
|
|
* We cannot call jpeg_finish_decompress here since we still need the
|
|
* virtual arrays allocated from the source object for processing.
|
|
*/
|
|
if (fp != stdin)
|
|
fclose(fp);
|
|
|
|
/* Open the output file. */
|
|
if (outfilename != NULL) {
|
|
if ((fp = fopen(outfilename, WRITE_BINARY)) == NULL) {
|
|
fprintf(stderr, "%s: can't open %s for writing\n", progname,
|
|
outfilename);
|
|
return EXIT_FAILURE;
|
|
}
|
|
} else {
|
|
/* default output file is stdout */
|
|
fp = write_stdout();
|
|
}
|
|
|
|
/* Adjust default compression parameters by re-parsing the options */
|
|
file_index = parse_switches(&dstinfo, argc, argv, 0, TRUE);
|
|
|
|
/* Specify data destination for compression */
|
|
jpeg_stdio_dest(&dstinfo, fp);
|
|
|
|
/* Start compressor (note no image data is actually written here) */
|
|
jpeg_write_coefficients(&dstinfo, dst_coef_arrays);
|
|
|
|
/* Copy to the output file any extra markers that we want to preserve */
|
|
jcopy_markers_execute(&srcinfo, &dstinfo, copyoption);
|
|
|
|
if (icc_profile != NULL)
|
|
jpeg_write_icc_profile(&dstinfo, icc_profile, (unsigned int)icc_len);
|
|
|
|
/* Execute image transformation, if any */
|
|
#if TRANSFORMS_SUPPORTED
|
|
jtransform_execute_transformation(&srcinfo, &dstinfo, src_coef_arrays,
|
|
&transformoption);
|
|
#endif
|
|
|
|
/* Finish compression and release memory */
|
|
jpeg_finish_compress(&dstinfo);
|
|
jpeg_destroy_compress(&dstinfo);
|
|
#if TRANSFORMS_SUPPORTED
|
|
if (dropfilename != NULL) {
|
|
(void)jpeg_finish_decompress(&dropinfo);
|
|
jpeg_destroy_decompress(&dropinfo);
|
|
}
|
|
#endif
|
|
(void)jpeg_finish_decompress(&srcinfo);
|
|
jpeg_destroy_decompress(&srcinfo);
|
|
|
|
/* Close output file, if we opened it */
|
|
if (fp != stdout)
|
|
fclose(fp);
|
|
#if TRANSFORMS_SUPPORTED
|
|
if (drop_file != NULL)
|
|
fclose(drop_file);
|
|
#endif
|
|
|
|
if (report)
|
|
end_progress_monitor((j_common_ptr)&dstinfo);
|
|
if (report || max_scans != 0)
|
|
end_progress_monitor((j_common_ptr)&srcinfo);
|
|
|
|
free(icc_profile);
|
|
|
|
/* All done. */
|
|
#if TRANSFORMS_SUPPORTED
|
|
if (dropfilename != NULL)
|
|
return (jsrcerr.num_warnings + jdroperr.num_warnings +
|
|
jdsterr.num_warnings ? EXIT_WARNING : EXIT_SUCCESS);
|
|
#endif
|
|
return (jsrcerr.num_warnings + jdsterr.num_warnings ?
|
|
EXIT_WARNING : EXIT_SUCCESS);
|
|
}
|