diff options
Diffstat (limited to 'test/monniaux/jpeg-6b/jpegtran.c')
-rw-r--r-- | test/monniaux/jpeg-6b/jpegtran.c | 1008 |
1 files changed, 504 insertions, 504 deletions
diff --git a/test/monniaux/jpeg-6b/jpegtran.c b/test/monniaux/jpeg-6b/jpegtran.c index 719aaa73..20ef111b 100644 --- a/test/monniaux/jpeg-6b/jpegtran.c +++ b/test/monniaux/jpeg-6b/jpegtran.c @@ -1,504 +1,504 @@ -/*
- * jpegtran.c
- *
- * Copyright (C) 1995-1997, 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.
- *
- * This file contains a command-line user interface for JPEG transcoding.
- * It is very similar to cjpeg.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 */
-
-#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 * outfilename; /* for -outfile 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
-#if TRANSFORMS_SUPPORTED
- fprintf(stderr, "Switches for modifying the image:\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, " -rotate [90|180|270] Rotate image (degrees clockwise)\n");
- fprintf(stderr, " -transpose Transpose image\n");
- fprintf(stderr, " -transverse Transverse transpose image\n");
- fprintf(stderr, " -trim Drop non-transformable edge blocks\n");
-#endif /* TRANSFORMS_SUPPORTED */
- fprintf(stderr, "Switches for advanced users:\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, " -outfile name Specify name for output file\n");
- fprintf(stderr, " -verbose or -debug Emit debug output\n");
- fprintf(stderr, "Switches for wizards:\n");
-#ifdef C_ARITH_CODING_SUPPORTED
- fprintf(stderr, " -arithmetic Use arithmetic coding\n");
-#endif
-#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;
- outfilename = NULL;
- copyoption = JCOPYOPT_DEFAULT;
- transformoption.transform = JXFORM_NONE;
- transformoption.trim = FALSE;
- transformoption.force_grayscale = 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", 1)) {
- /* 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, "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, "Independent JPEG Group's JPEGTRAN, version %s\n%s\n",
- JVERSION, JCOPYRIGHT);
- printed_version = TRUE;
- }
- cinfo->err->trace_level++;
-
- } 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, "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, "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, "progressive", 1)) {
- /* 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, "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, "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 {
- 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) */
-}
-
-
-/*
- * The main program.
- */
-
-int
-main (int argc, char **argv)
-{
- struct jpeg_decompress_struct srcinfo;
- struct jpeg_compress_struct dstinfo;
- struct jpeg_error_mgr jsrcerr, jdsterr;
-#ifdef PROGRESS_REPORT
- struct cdjpeg_progress_mgr progress;
-#endif
- jvirt_barray_ptr * src_coef_arrays;
- jvirt_barray_ptr * dst_coef_arrays;
- int file_index;
- FILE * input_file;
- FILE * output_file;
-
- /* 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);
-
- /* Now safe to enable signal catcher.
- * Note: we assume only the decompression object will have virtual arrays.
- */
-#ifdef NEED_SIGNAL_CATCHER
- enable_signal_catcher((j_common_ptr) &srcinfo);
-#endif
-
- /* 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 affects 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;
-
-#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 ((input_file = fopen(argv[file_index], READ_BINARY)) == NULL) {
- fprintf(stderr, "%s: can't open %s\n", progname, argv[file_index]);
- exit(EXIT_FAILURE);
- }
- } else {
- /* default input file is stdin */
- input_file = read_stdin();
- }
-
- /* Open the output file. */
- if (outfilename != NULL) {
- if ((output_file = fopen(outfilename, WRITE_BINARY)) == NULL) {
- fprintf(stderr, "%s: can't open %s\n", progname, outfilename);
- exit(EXIT_FAILURE);
- }
- } else {
- /* default output file is stdout */
- output_file = write_stdout();
- }
-
-#ifdef PROGRESS_REPORT
- start_progress_monitor((j_common_ptr) &dstinfo, &progress);
-#endif
-
- /* Specify data source for decompression */
- jpeg_stdio_src(&srcinfo, input_file);
-
- /* Enable saving of extra markers that we want to copy */
- jcopy_markers_setup(&srcinfo, copyoption);
-
- /* Read file header */
- (void) jpeg_read_header(&srcinfo, TRUE);
-
- /* 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
- jtransform_request_workspace(&srcinfo, &transformoption);
-#endif
-
- /* Read source file as DCT coefficients */
- src_coef_arrays = jpeg_read_coefficients(&srcinfo);
-
- /* 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
-
- /* 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, output_file);
-
- /* 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);
-
- /* 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);
- (void) jpeg_finish_decompress(&srcinfo);
- jpeg_destroy_decompress(&srcinfo);
-
- /* Close files, if we opened them */
- if (input_file != stdin)
- fclose(input_file);
- if (output_file != stdout)
- fclose(output_file);
-
-#ifdef PROGRESS_REPORT
- end_progress_monitor((j_common_ptr) &dstinfo);
-#endif
-
- /* All done. */
- exit(jsrcerr.num_warnings + jdsterr.num_warnings ?EXIT_WARNING:EXIT_SUCCESS);
- return 0; /* suppress no-return-value warnings */
-}
+/* + * jpegtran.c + * + * Copyright (C) 1995-1997, 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. + * + * This file contains a command-line user interface for JPEG transcoding. + * It is very similar to cjpeg.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 */ + +#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 * outfilename; /* for -outfile 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 +#if TRANSFORMS_SUPPORTED + fprintf(stderr, "Switches for modifying the image:\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, " -rotate [90|180|270] Rotate image (degrees clockwise)\n"); + fprintf(stderr, " -transpose Transpose image\n"); + fprintf(stderr, " -transverse Transverse transpose image\n"); + fprintf(stderr, " -trim Drop non-transformable edge blocks\n"); +#endif /* TRANSFORMS_SUPPORTED */ + fprintf(stderr, "Switches for advanced users:\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, " -outfile name Specify name for output file\n"); + fprintf(stderr, " -verbose or -debug Emit debug output\n"); + fprintf(stderr, "Switches for wizards:\n"); +#ifdef C_ARITH_CODING_SUPPORTED + fprintf(stderr, " -arithmetic Use arithmetic coding\n"); +#endif +#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; + outfilename = NULL; + copyoption = JCOPYOPT_DEFAULT; + transformoption.transform = JXFORM_NONE; + transformoption.trim = FALSE; + transformoption.force_grayscale = 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", 1)) { + /* 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, "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, "Independent JPEG Group's JPEGTRAN, version %s\n%s\n", + JVERSION, JCOPYRIGHT); + printed_version = TRUE; + } + cinfo->err->trace_level++; + + } 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, "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, "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, "progressive", 1)) { + /* 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, "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, "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 { + 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) */ +} + + +/* + * The main program. + */ + +int +main (int argc, char **argv) +{ + struct jpeg_decompress_struct srcinfo; + struct jpeg_compress_struct dstinfo; + struct jpeg_error_mgr jsrcerr, jdsterr; +#ifdef PROGRESS_REPORT + struct cdjpeg_progress_mgr progress; +#endif + jvirt_barray_ptr * src_coef_arrays; + jvirt_barray_ptr * dst_coef_arrays; + int file_index; + FILE * input_file; + FILE * output_file; + + /* 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); + + /* Now safe to enable signal catcher. + * Note: we assume only the decompression object will have virtual arrays. + */ +#ifdef NEED_SIGNAL_CATCHER + enable_signal_catcher((j_common_ptr) &srcinfo); +#endif + + /* 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 affects 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; + +#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 ((input_file = fopen(argv[file_index], READ_BINARY)) == NULL) { + fprintf(stderr, "%s: can't open %s\n", progname, argv[file_index]); + exit(EXIT_FAILURE); + } + } else { + /* default input file is stdin */ + input_file = read_stdin(); + } + + /* Open the output file. */ + if (outfilename != NULL) { + if ((output_file = fopen(outfilename, WRITE_BINARY)) == NULL) { + fprintf(stderr, "%s: can't open %s\n", progname, outfilename); + exit(EXIT_FAILURE); + } + } else { + /* default output file is stdout */ + output_file = write_stdout(); + } + +#ifdef PROGRESS_REPORT + start_progress_monitor((j_common_ptr) &dstinfo, &progress); +#endif + + /* Specify data source for decompression */ + jpeg_stdio_src(&srcinfo, input_file); + + /* Enable saving of extra markers that we want to copy */ + jcopy_markers_setup(&srcinfo, copyoption); + + /* Read file header */ + (void) jpeg_read_header(&srcinfo, TRUE); + + /* 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 + jtransform_request_workspace(&srcinfo, &transformoption); +#endif + + /* Read source file as DCT coefficients */ + src_coef_arrays = jpeg_read_coefficients(&srcinfo); + + /* 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 + + /* 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, output_file); + + /* 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); + + /* 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); + (void) jpeg_finish_decompress(&srcinfo); + jpeg_destroy_decompress(&srcinfo); + + /* Close files, if we opened them */ + if (input_file != stdin) + fclose(input_file); + if (output_file != stdout) + fclose(output_file); + +#ifdef PROGRESS_REPORT + end_progress_monitor((j_common_ptr) &dstinfo); +#endif + + /* All done. */ + exit(jsrcerr.num_warnings + jdsterr.num_warnings ?EXIT_WARNING:EXIT_SUCCESS); + return 0; /* suppress no-return-value warnings */ +} |