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2ae2a551a6
GLES drivers adapted, but only did make compile-tests. git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/branches/ogl-es@6038 dfc29bdd-3216-0410-991c-e03cc46cb475
578 lines
19 KiB
C
578 lines
19 KiB
C
/*
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* jpegtran.c
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*
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* Copyright (C) 1995-2013, Thomas G. Lane, Guido Vollbeding.
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* This file is part of the Independent JPEG Group's software.
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* For conditions of distribution and use, see the accompanying README file.
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*
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* This file contains a command-line user interface for JPEG transcoding.
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* It is very similar to cjpeg.c, and partly to djpeg.c, but provides
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* lossless transcoding between different JPEG file formats. It also
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* provides some lossless and sort-of-lossless transformations of JPEG data.
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*/
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#include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */
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#include "transupp.h" /* Support routines for jpegtran */
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#include "jversion.h" /* for version message */
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#ifdef USE_CCOMMAND /* command-line reader for Macintosh */
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#ifdef __MWERKS__
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#include <SIOUX.h> /* Metrowerks needs this */
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#include <console.h> /* ... and this */
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#endif
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#ifdef THINK_C
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#include <console.h> /* Think declares it here */
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#endif
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#endif
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/*
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* Argument-parsing code.
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* The switch parser is designed to be useful with DOS-style command line
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* syntax, ie, intermixed switches and file names, where only the switches
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* to the left of a given file name affect processing of that file.
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* The main program in this file doesn't actually use this capability...
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*/
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static const char * progname; /* program name for error messages */
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static char * outfilename; /* for -outfile switch */
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static char * scaleoption; /* -scale switch */
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static JCOPY_OPTION copyoption; /* -copy switch */
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static jpeg_transform_info transformoption; /* image transformation options */
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LOCAL(void)
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usage (void)
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/* complain about bad command line */
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{
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fprintf(stderr, "usage: %s [switches] ", progname);
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#ifdef TWO_FILE_COMMANDLINE
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fprintf(stderr, "inputfile outputfile\n");
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#else
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fprintf(stderr, "[inputfile]\n");
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#endif
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fprintf(stderr, "Switches (names may be abbreviated):\n");
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fprintf(stderr, " -copy none Copy no extra markers from source file\n");
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fprintf(stderr, " -copy comments Copy only comment markers (default)\n");
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fprintf(stderr, " -copy all Copy all extra markers\n");
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#ifdef ENTROPY_OPT_SUPPORTED
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fprintf(stderr, " -optimize Optimize Huffman table (smaller file, but slow compression)\n");
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#endif
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#ifdef C_PROGRESSIVE_SUPPORTED
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fprintf(stderr, " -progressive Create progressive JPEG file\n");
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#endif
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fprintf(stderr, "Switches for modifying the image:\n");
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#if TRANSFORMS_SUPPORTED
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fprintf(stderr, " -crop WxH+X+Y Crop to a rectangular subarea\n");
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fprintf(stderr, " -flip [horizontal|vertical] Mirror image (left-right or top-bottom)\n");
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fprintf(stderr, " -grayscale Reduce to grayscale (omit color data)\n");
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fprintf(stderr, " -perfect Fail if there is non-transformable edge blocks\n");
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fprintf(stderr, " -rotate [90|180|270] Rotate image (degrees clockwise)\n");
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#endif
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fprintf(stderr, " -scale M/N Scale output image by fraction M/N, eg, 1/8\n");
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#if TRANSFORMS_SUPPORTED
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fprintf(stderr, " -transpose Transpose image\n");
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fprintf(stderr, " -transverse Transverse transpose image\n");
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fprintf(stderr, " -trim Drop non-transformable edge blocks\n");
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fprintf(stderr, " -wipe WxH+X+Y Wipe (gray out) a rectangular subarea\n");
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#endif
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fprintf(stderr, "Switches for advanced users:\n");
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#ifdef C_ARITH_CODING_SUPPORTED
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fprintf(stderr, " -arithmetic Use arithmetic coding\n");
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#endif
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fprintf(stderr, " -restart N Set restart interval in rows, or in blocks with B\n");
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fprintf(stderr, " -maxmemory N Maximum memory to use (in kbytes)\n");
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fprintf(stderr, " -outfile name Specify name for output file\n");
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fprintf(stderr, " -verbose or -debug Emit debug output\n");
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fprintf(stderr, "Switches for wizards:\n");
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#ifdef C_MULTISCAN_FILES_SUPPORTED
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fprintf(stderr, " -scans file Create multi-scan JPEG per script file\n");
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#endif
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exit(EXIT_FAILURE);
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}
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LOCAL(void)
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select_transform (JXFORM_CODE transform)
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/* Silly little routine to detect multiple transform options,
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* which we can't handle.
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*/
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{
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#if TRANSFORMS_SUPPORTED
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if (transformoption.transform == JXFORM_NONE ||
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transformoption.transform == transform) {
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transformoption.transform = transform;
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} else {
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fprintf(stderr, "%s: can only do one image transformation at a time\n",
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progname);
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usage();
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}
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#else
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fprintf(stderr, "%s: sorry, image transformation was not compiled\n",
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progname);
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exit(EXIT_FAILURE);
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#endif
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}
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LOCAL(int)
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parse_switches (j_compress_ptr cinfo, int argc, char **argv,
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int last_file_arg_seen, boolean for_real)
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/* Parse optional switches.
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* Returns argv[] index of first file-name argument (== argc if none).
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* Any file names with indexes <= last_file_arg_seen are ignored;
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* they have presumably been processed in a previous iteration.
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* (Pass 0 for last_file_arg_seen on the first or only iteration.)
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* for_real is FALSE on the first (dummy) pass; we may skip any expensive
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* processing.
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*/
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{
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int argn;
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char * arg;
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boolean simple_progressive;
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char * scansarg = NULL; /* saves -scans parm if any */
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/* Set up default JPEG parameters. */
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simple_progressive = FALSE;
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outfilename = NULL;
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scaleoption = NULL;
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copyoption = JCOPYOPT_DEFAULT;
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transformoption.transform = JXFORM_NONE;
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transformoption.perfect = FALSE;
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transformoption.trim = FALSE;
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transformoption.force_grayscale = FALSE;
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transformoption.crop = FALSE;
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cinfo->err->trace_level = 0;
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/* Scan command line options, adjust parameters */
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for (argn = 1; argn < argc; argn++) {
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arg = argv[argn];
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if (*arg != '-') {
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/* Not a switch, must be a file name argument */
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if (argn <= last_file_arg_seen) {
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outfilename = NULL; /* -outfile applies to just one input file */
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continue; /* ignore this name if previously processed */
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}
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break; /* else done parsing switches */
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}
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arg++; /* advance past switch marker character */
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if (keymatch(arg, "arithmetic", 1)) {
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/* Use arithmetic coding. */
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#ifdef C_ARITH_CODING_SUPPORTED
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cinfo->arith_code = TRUE;
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#else
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fprintf(stderr, "%s: sorry, arithmetic coding not supported\n",
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progname);
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exit(EXIT_FAILURE);
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#endif
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} else if (keymatch(arg, "copy", 2)) {
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/* Select which extra markers to copy. */
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if (++argn >= argc) /* advance to next argument */
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usage();
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if (keymatch(argv[argn], "none", 1)) {
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copyoption = JCOPYOPT_NONE;
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} else if (keymatch(argv[argn], "comments", 1)) {
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copyoption = JCOPYOPT_COMMENTS;
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} else if (keymatch(argv[argn], "all", 1)) {
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copyoption = JCOPYOPT_ALL;
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} else
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usage();
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} else if (keymatch(arg, "crop", 2)) {
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/* Perform lossless cropping. */
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#if TRANSFORMS_SUPPORTED
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if (++argn >= argc) /* advance to next argument */
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usage();
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if (transformoption.crop /* reject multiple crop/wipe requests */ ||
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! jtransform_parse_crop_spec(&transformoption, argv[argn])) {
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fprintf(stderr, "%s: bogus -crop argument '%s'\n",
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progname, argv[argn]);
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exit(EXIT_FAILURE);
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}
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#else
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select_transform(JXFORM_NONE); /* force an error */
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#endif
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} else if (keymatch(arg, "debug", 1) || keymatch(arg, "verbose", 1)) {
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/* Enable debug printouts. */
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/* On first -d, print version identification */
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static boolean printed_version = FALSE;
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if (! printed_version) {
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fprintf(stderr, "Independent JPEG Group's JPEGTRAN, version %s\n%s\n",
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JVERSION, JCOPYRIGHT);
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printed_version = TRUE;
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}
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cinfo->err->trace_level++;
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} else if (keymatch(arg, "flip", 1)) {
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/* Mirror left-right or top-bottom. */
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if (++argn >= argc) /* advance to next argument */
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usage();
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if (keymatch(argv[argn], "horizontal", 1))
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select_transform(JXFORM_FLIP_H);
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else if (keymatch(argv[argn], "vertical", 1))
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select_transform(JXFORM_FLIP_V);
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else
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usage();
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} else if (keymatch(arg, "grayscale", 1) || keymatch(arg, "greyscale",1)) {
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/* Force to grayscale. */
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#if TRANSFORMS_SUPPORTED
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transformoption.force_grayscale = TRUE;
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#else
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select_transform(JXFORM_NONE); /* force an error */
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#endif
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} else if (keymatch(arg, "maxmemory", 3)) {
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/* Maximum memory in Kb (or Mb with 'm'). */
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long lval;
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char ch = 'x';
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if (++argn >= argc) /* advance to next argument */
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usage();
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if (sscanf(argv[argn], "%ld%c", &lval, &ch) < 1)
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usage();
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if (ch == 'm' || ch == 'M')
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lval *= 1000L;
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cinfo->mem->max_memory_to_use = lval * 1000L;
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} else if (keymatch(arg, "optimize", 1) || keymatch(arg, "optimise", 1)) {
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/* Enable entropy parm optimization. */
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#ifdef ENTROPY_OPT_SUPPORTED
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cinfo->optimize_coding = TRUE;
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#else
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fprintf(stderr, "%s: sorry, entropy optimization was not compiled\n",
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progname);
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exit(EXIT_FAILURE);
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#endif
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} else if (keymatch(arg, "outfile", 4)) {
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/* Set output file name. */
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if (++argn >= argc) /* advance to next argument */
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usage();
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outfilename = argv[argn]; /* save it away for later use */
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} else if (keymatch(arg, "perfect", 2)) {
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/* Fail if there is any partial edge MCUs that the transform can't
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* handle. */
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transformoption.perfect = TRUE;
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} else if (keymatch(arg, "progressive", 2)) {
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/* Select simple progressive mode. */
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#ifdef C_PROGRESSIVE_SUPPORTED
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simple_progressive = TRUE;
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/* We must postpone execution until num_components is known. */
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#else
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fprintf(stderr, "%s: sorry, progressive output was not compiled\n",
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progname);
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exit(EXIT_FAILURE);
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#endif
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} else if (keymatch(arg, "restart", 1)) {
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/* Restart interval in MCU rows (or in MCUs with 'b'). */
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long lval;
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char ch = 'x';
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if (++argn >= argc) /* advance to next argument */
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usage();
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if (sscanf(argv[argn], "%ld%c", &lval, &ch) < 1)
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usage();
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if (lval < 0 || lval > 65535L)
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usage();
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if (ch == 'b' || ch == 'B') {
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cinfo->restart_interval = (unsigned int) lval;
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cinfo->restart_in_rows = 0; /* else prior '-restart n' overrides me */
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} else {
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cinfo->restart_in_rows = (int) lval;
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/* restart_interval will be computed during startup */
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}
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} else if (keymatch(arg, "rotate", 2)) {
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/* Rotate 90, 180, or 270 degrees (measured clockwise). */
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if (++argn >= argc) /* advance to next argument */
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usage();
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if (keymatch(argv[argn], "90", 2))
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select_transform(JXFORM_ROT_90);
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else if (keymatch(argv[argn], "180", 3))
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select_transform(JXFORM_ROT_180);
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else if (keymatch(argv[argn], "270", 3))
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select_transform(JXFORM_ROT_270);
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else
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usage();
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} else if (keymatch(arg, "scale", 4)) {
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/* Scale the output image by a fraction M/N. */
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if (++argn >= argc) /* advance to next argument */
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usage();
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scaleoption = argv[argn];
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/* We must postpone processing until decompression startup. */
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} else if (keymatch(arg, "scans", 1)) {
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/* Set scan script. */
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#ifdef C_MULTISCAN_FILES_SUPPORTED
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if (++argn >= argc) /* advance to next argument */
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usage();
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scansarg = argv[argn];
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/* We must postpone reading the file in case -progressive appears. */
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#else
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fprintf(stderr, "%s: sorry, multi-scan output was not compiled\n",
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progname);
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exit(EXIT_FAILURE);
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#endif
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} else if (keymatch(arg, "transpose", 1)) {
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/* Transpose (across UL-to-LR axis). */
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select_transform(JXFORM_TRANSPOSE);
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} else if (keymatch(arg, "transverse", 6)) {
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/* Transverse transpose (across UR-to-LL axis). */
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select_transform(JXFORM_TRANSVERSE);
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} else if (keymatch(arg, "trim", 3)) {
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/* Trim off any partial edge MCUs that the transform can't handle. */
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transformoption.trim = TRUE;
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} else if (keymatch(arg, "wipe", 1)) {
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#if TRANSFORMS_SUPPORTED
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if (++argn >= argc) /* advance to next argument */
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usage();
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if (transformoption.crop /* reject multiple crop/wipe requests */ ||
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! jtransform_parse_crop_spec(&transformoption, argv[argn])) {
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fprintf(stderr, "%s: bogus -wipe argument '%s'\n",
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progname, argv[argn]);
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exit(EXIT_FAILURE);
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}
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select_transform(JXFORM_WIPE);
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#else
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select_transform(JXFORM_NONE); /* force an error */
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#endif
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} else {
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usage(); /* bogus switch */
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}
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}
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/* Post-switch-scanning cleanup */
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if (for_real) {
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#ifdef C_PROGRESSIVE_SUPPORTED
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if (simple_progressive) /* process -progressive; -scans can override */
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jpeg_simple_progression(cinfo);
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#endif
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#ifdef C_MULTISCAN_FILES_SUPPORTED
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if (scansarg != NULL) /* process -scans if it was present */
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if (! read_scan_script(cinfo, scansarg))
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usage();
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#endif
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}
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return argn; /* return index of next arg (file name) */
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}
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/*
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* The main program.
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*/
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int
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main (int argc, char **argv)
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{
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struct jpeg_decompress_struct srcinfo;
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struct jpeg_compress_struct dstinfo;
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struct jpeg_error_mgr jsrcerr, jdsterr;
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#ifdef PROGRESS_REPORT
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struct cdjpeg_progress_mgr progress;
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#endif
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jvirt_barray_ptr * src_coef_arrays;
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jvirt_barray_ptr * dst_coef_arrays;
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int file_index;
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/* We assume all-in-memory processing and can therefore use only a
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* single file pointer for sequential input and output operation.
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*/
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FILE * fp;
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/* On Mac, fetch a command line. */
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#ifdef USE_CCOMMAND
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argc = ccommand(&argv);
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#endif
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progname = argv[0];
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if (progname == NULL || progname[0] == 0)
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progname = "jpegtran"; /* in case C library doesn't provide it */
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/* Initialize the JPEG decompression object with default error handling. */
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srcinfo.err = jpeg_std_error(&jsrcerr);
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jpeg_create_decompress(&srcinfo);
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/* Initialize the JPEG compression object with default error handling. */
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dstinfo.err = jpeg_std_error(&jdsterr);
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jpeg_create_compress(&dstinfo);
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/* Now safe to enable signal catcher.
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* Note: we assume only the decompression object will have virtual arrays.
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*/
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#ifdef NEED_SIGNAL_CATCHER
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enable_signal_catcher((j_common_ptr) &srcinfo);
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#endif
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/* Scan command line to find file names.
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* It is convenient to use just one switch-parsing routine, but the switch
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* values read here are mostly ignored; we will rescan the switches after
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* opening the input file. Also note that most of the switches affect the
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* destination JPEG object, so we parse into that and then copy over what
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* needs to affects the source too.
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*/
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file_index = parse_switches(&dstinfo, argc, argv, 0, FALSE);
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jsrcerr.trace_level = jdsterr.trace_level;
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srcinfo.mem->max_memory_to_use = dstinfo.mem->max_memory_to_use;
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#ifdef TWO_FILE_COMMANDLINE
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/* Must have either -outfile switch or explicit output file name */
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if (outfilename == NULL) {
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if (file_index != argc-2) {
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fprintf(stderr, "%s: must name one input and one output file\n",
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progname);
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usage();
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}
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outfilename = argv[file_index+1];
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} else {
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if (file_index != argc-1) {
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fprintf(stderr, "%s: must name one input and one output file\n",
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progname);
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usage();
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}
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}
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#else
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/* Unix style: expect zero or one file name */
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if (file_index < argc-1) {
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fprintf(stderr, "%s: only one input file\n", progname);
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usage();
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}
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#endif /* TWO_FILE_COMMANDLINE */
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/* Open the input file. */
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if (file_index < argc) {
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if ((fp = fopen(argv[file_index], READ_BINARY)) == NULL) {
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fprintf(stderr, "%s: can't open %s for reading\n", progname, argv[file_index]);
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exit(EXIT_FAILURE);
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}
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} else {
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/* default input file is stdin */
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fp = read_stdin();
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}
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#ifdef PROGRESS_REPORT
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start_progress_monitor((j_common_ptr) &dstinfo, &progress);
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#endif
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/* Specify data source for decompression */
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jpeg_stdio_src(&srcinfo, fp);
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/* Enable saving of extra markers that we want to copy */
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jcopy_markers_setup(&srcinfo, copyoption);
|
|
|
|
/* Read file header */
|
|
(void) jpeg_read_header(&srcinfo, TRUE);
|
|
|
|
/* Adjust default decompression parameters */
|
|
if (scaleoption != NULL)
|
|
if (sscanf(scaleoption, "%u/%u",
|
|
&srcinfo.scale_num, &srcinfo.scale_denom) < 1)
|
|
usage();
|
|
|
|
/* 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);
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
#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
|
|
|
|
/* 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);
|
|
exit(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);
|
|
|
|
/* 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 output file, if we opened it */
|
|
if (fp != stdout)
|
|
fclose(fp);
|
|
|
|
#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 */
|
|
}
|