Beispiel #1
0
parse_switches (j_compress_ptr cinfo, int argc, char **argv,
		int last_file_arg_seen, jpegBoolean 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;
  int quality;			/* -quality parameter */
  int q_scale_factor;		/* scaling percentage for -qtables */
  jpegBoolean force_baseline;
  jpegBoolean simple_progressive;
  char * qtablefile = NULL;	/* saves -qtables filename if any */
  char * qslotsarg = NULL;	/* saves -qslots parm if any */
  char * samplearg = NULL;	/* saves -sample parm if any */
  char * scansarg = NULL;	/* saves -scans parm if any */

  /* Set up default JPEG parameters. */
  /* Note that default -quality level need not, and does not,
   * match the default scaling for an explicit -qtables argument.
   */
  quality = 75;			/* default -quality value */
  q_scale_factor = 100;		/* default to no scaling for -qtables */
  force_baseline = FALSE;	/* by default, allow 16-bit quantizers */
  simple_progressive = FALSE;
  is_targa = FALSE;
  outfilename = NULL;
  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, "baseline", 1)) {
      /* Force baseline output (8-bit quantizer values). */
      force_baseline = TRUE;

    } else if (keymatch(arg, "dct", 2)) {
      /* Select DCT algorithm. */
      if (++argn >= argc)	/* advance to next argument */
	usage();
      if (keymatch(argv[argn], "int", 1)) {
	cinfo->dct_method = JDCT_ISLOW;
      } else if (keymatch(argv[argn], "fast", 2)) {
	cinfo->dct_method = JDCT_IFAST;
      } else if (keymatch(argv[argn], "float", 2)) {
	cinfo->dct_method = JDCT_FLOAT;
      } else
	usage();

    } else if (keymatch(arg, "debug", 1) || keymatch(arg, "verbose", 1)) {
      /* Enable debug printouts. */
      /* On first -d, print version identification */
      static jpegBoolean printed_version = FALSE;

      if (! printed_version) {
	fprintf(stderr, "Independent JPEG Group's CJPEG, version %s\n%s\n",
		JVERSION, JCOPYRIGHT);
	printed_version = TRUE;
      }
      cinfo->err->trace_level++;

    } else if (keymatch(arg, "grayscale", 2) || keymatch(arg, "greyscale",2)) {
      /* Force a monochrome JPEG file to be generated. */
      jpeg_set_colorspace(cinfo, JCS_GRAYSCALE);

    } 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, "quality", 1)) {
      /* Quality factor (quantization table scaling factor). */
      if (++argn >= argc)	/* advance to next argument */
	usage();
      if (sscanf(argv[argn], "%d", &quality) != 1)
	usage();
      /* Change scale factor in case -qtables is present. */
      q_scale_factor = jpeg_quality_scaling(quality);

    } else if (keymatch(arg, "qslots", 2)) {
      /* Quantization table slot numbers. */
      if (++argn >= argc)	/* advance to next argument */
	usage();
      qslotsarg = argv[argn];
      /* Must delay setting qslots until after we have processed any
       * colorspace-determining switches, since jpeg_set_colorspace sets
       * default quant table numbers.
       */

    } else if (keymatch(arg, "qtables", 2)) {
      /* Quantization tables fetched from file. */
      if (++argn >= argc)	/* advance to next argument */
	usage();
      qtablefile = argv[argn];
      /* We postpone actually reading the file in case -quality comes later. */

    } 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, "sample", 2)) {
      /* Set sampling factors. */
      if (++argn >= argc)	/* advance to next argument */
	usage();
      samplearg = argv[argn];
      /* Must delay setting sample factors until after we have processed any
       * colorspace-determining switches, since jpeg_set_colorspace sets
       * default sampling factors.
       */

    } else if (keymatch(arg, "scans", 2)) {
      /* 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, "smooth", 2)) {
      /* Set input smoothing factor. */
      int val;

      if (++argn >= argc)	/* advance to next argument */
	usage();
      if (sscanf(argv[argn], "%d", &val) != 1)
	usage();
      if (val < 0 || val > 100)
	usage();
      cinfo->smoothing_factor = val;

    } else if (keymatch(arg, "targa", 1)) {
      /* Input file is Targa format. */
      is_targa = TRUE;

    } else {
      usage();			/* bogus switch */
    }
  }

  /* Post-switch-scanning cleanup */

  if (for_real) {

    /* Set quantization tables for selected quality. */
    /* Some or all may be overridden if -qtables is present. */
    jpeg_set_quality(cinfo, quality, force_baseline);

    if (qtablefile != NULL)	/* process -qtables if it was present */
      if (! read_quant_tables(cinfo, qtablefile,
			      q_scale_factor, force_baseline))
	usage();

    if (qslotsarg != NULL)	/* process -qslots if it was present */
      if (! set_quant_slots(cinfo, qslotsarg))
	usage();

    if (samplearg != NULL)	/* process -sample if it was present */
      if (! set_sample_factors(cinfo, samplearg))
	usage();

#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) */
}
Beispiel #2
0
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) */
}
Beispiel #3
0
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 force_baseline;
  boolean simple_progressive;
  char * qualityarg = NULL;	/* saves -quality parm if any */
  char * qtablefile = NULL;	/* saves -qtables filename if any */
  char * qslotsarg = NULL;	/* saves -qslots parm if any */
  char * samplearg = NULL;	/* saves -sample parm if any */
  char * scansarg = NULL;	/* saves -scans parm if any */

  /* Set up default JPEG parameters. */

  force_baseline = FALSE;	/* by default, allow 16-bit quantizers */
#ifdef C_PROGRESSIVE_SUPPORTED
  simple_progressive = cinfo->num_scans == 0 ? FALSE : TRUE;
#else
  simple_progressive = FALSE;
#endif
  is_targa = FALSE;
  outfilename = NULL;
  memdst = 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, "baseline", 1)) {
      /* Force baseline-compatible output (8-bit quantizer values). */
      force_baseline = TRUE;

    } else if (keymatch(arg, "dct", 2)) {
      /* Select DCT algorithm. */
      if (++argn >= argc) { /* advance to next argument */
        fprintf(stderr, "%s: missing argument for dct\n", progname);
	usage();
      }
      if (keymatch(argv[argn], "int", 1)) {
	cinfo->dct_method = JDCT_ISLOW;
      } else if (keymatch(argv[argn], "fast", 2)) {
	cinfo->dct_method = JDCT_IFAST;
      } else if (keymatch(argv[argn], "float", 2)) {
	cinfo->dct_method = JDCT_FLOAT;
      } else
        fprintf(stderr, "%s: invalid argument for dct\n", progname);
	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, "%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, "fastcrush", 4)) {
      cinfo->optimize_scans = FALSE;

    } else if (keymatch(arg, "flat", 4)) {
      cinfo->use_flat_quant_tbl = TRUE;
      jpeg_set_quality(cinfo, 75, TRUE);

    } else if (keymatch(arg, "grayscale", 2) || keymatch(arg, "greyscale",2)) {
      /* Force a monochrome JPEG file to be generated. */
      jpeg_set_colorspace(cinfo, JCS_GRAYSCALE);

    } else if (keymatch(arg, "rgb", 3)) {
      /* Force an RGB JPEG file to be generated. */
      jpeg_set_colorspace(cinfo, JCS_RGB);

    } else if (keymatch(arg, "lambda1", 7)) {
      if (++argn >= argc)	/* advance to next argument */
	usage();
      cinfo->lambda_log_scale1 = atof(argv[argn]);

    } else if (keymatch(arg, "lambda2", 7)) {
      if (++argn >= argc)	/* advance to next argument */
	usage();
      cinfo->lambda_log_scale2 = atof(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, "multidcscan", 3)) {
      cinfo->one_dc_scan = FALSE;

    } 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 in\n",
	      progname);
      exit(EXIT_FAILURE);
#endif

    } else if (keymatch(arg, "outfile", 4)) {
      /* Set output file name. */
      if (++argn >= argc)	{ /* advance to next argument */
        fprintf(stderr, "%s: missing argument for outfile\n", progname);
	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 in\n",
	      progname);
      exit(EXIT_FAILURE);
#endif

    } else if (keymatch(arg, "memdst", 2)) {
      /* Use in-memory destination manager */
#if JPEG_LIB_VERSION >= 80 || defined(MEM_SRCDST_SUPPORTED)
      memdst = TRUE;
#else
      fprintf(stderr, "%s: sorry, in-memory destination manager was not compiled in\n",
              progname);
      exit(EXIT_FAILURE);
#endif

    } else if (keymatch(arg, "quality", 1)) {
      /* Quality ratings (quantization table scaling factors). */
      if (++argn >= argc)	{ /* advance to next argument */
        fprintf(stderr, "%s: missing argument for quality\n", progname);
	usage();
      }
      qualityarg = argv[argn];

    } else if (keymatch(arg, "qslots", 2)) {
      /* Quantization table slot numbers. */
      if (++argn >= argc)	/* advance to next argument */
	usage();
      qslotsarg = argv[argn];
      /* Must delay setting qslots until after we have processed any
       * colorspace-determining switches, since jpeg_set_colorspace sets
       * default quant table numbers.
       */

    } else if (keymatch(arg, "qtables", 2)) {
      /* Quantization tables fetched from file. */
      if (++argn >= argc)	/* advance to next argument */
	usage();
      qtablefile = argv[argn];
      /* We postpone actually reading the file in case -quality comes later. */

    } 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, "revert", 3)) {
      /* revert to old JPEG default */
      cinfo->use_moz_defaults = FALSE;
      jpeg_set_defaults(cinfo);

    } else if (keymatch(arg, "sample", 2)) {
      /* Set sampling factors. */
      if (++argn >= argc)	/* advance to next argument */
	usage();
      samplearg = argv[argn];
      /* Must delay setting sample factors until after we have processed any
       * colorspace-determining switches, since jpeg_set_colorspace sets
       * default sampling factors.
       */

    } else if (keymatch(arg, "scans", 4)) {
      /* 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 in\n",
	      progname);
      exit(EXIT_FAILURE);
#endif

    } else if (keymatch(arg, "smooth", 2)) {
      /* Set input smoothing factor. */
      int val;

      if (++argn >= argc)	/* advance to next argument */
	usage();
      if (sscanf(argv[argn], "%d", &val) != 1)
	usage();
      if (val < 0 || val > 100)
	usage();
      cinfo->smoothing_factor = val;

    } else if (keymatch(arg, "targa", 1)) {
      /* Input file is Targa format. */
      is_targa = TRUE;

    } else if (keymatch(arg, "notrellis", 1)) {
      /* disable trellis quantization */
      cinfo->trellis_quant = FALSE;
      
    } else if (keymatch(arg, "tune-psnr", 6)) {
      cinfo->use_flat_quant_tbl = TRUE;
      cinfo->lambda_log_scale1 = 9.0;
      cinfo->lambda_log_scale2 = 0.0;
      cinfo->use_lambda_weight_tbl = FALSE;
      jpeg_set_quality(cinfo, 75, TRUE);
      
    } else if (keymatch(arg, "tune-ssim", 6)) {
      cinfo->use_flat_quant_tbl = TRUE;
      cinfo->lambda_log_scale1 = 12.0;
      cinfo->lambda_log_scale2 = 13.5;
      cinfo->use_lambda_weight_tbl = FALSE;
      jpeg_set_quality(cinfo, 75, TRUE);
      
    } else if (keymatch(arg, "tune-ms-ssim", 6)) {
      cinfo->use_flat_quant_tbl = FALSE;
      cinfo->lambda_log_scale1 = 14.25;
      cinfo->lambda_log_scale2 = 12.75;
      cinfo->use_lambda_weight_tbl = TRUE;
      jpeg_set_quality(cinfo, 75, TRUE);
      
    } else if (keymatch(arg, "tune-hvs-psnr", 6)) {
      cinfo->use_flat_quant_tbl = FALSE;
      cinfo->lambda_log_scale1 = 16.0;
      cinfo->lambda_log_scale2 = 15.5;
      cinfo->use_lambda_weight_tbl = TRUE;
      jpeg_set_quality(cinfo, 75, TRUE);
      
    } else {
      fprintf(stderr, "%s: unknown option '%s'\n", progname, arg);
      usage();			/* bogus switch */
    }
  }

  /* Post-switch-scanning cleanup */

  if (for_real) {

    /* Set quantization tables for selected quality. */
    /* Some or all may be overridden if -qtables is present. */
    if (qualityarg != NULL)	/* process -quality if it was present */
      if (! set_quality_ratings(cinfo, qualityarg, force_baseline)) {
        fprintf(stderr, "%s: can't set quality ratings\n", progname);
	usage();
      }

    if (qtablefile != NULL)	/* process -qtables if it was present */
      if (! read_quant_tables(cinfo, qtablefile, force_baseline)) {
        fprintf(stderr, "%s: can't read qtable file\n", progname);
	usage();
      }

    if (qslotsarg != NULL)	/* process -qslots if it was present */
      if (! set_quant_slots(cinfo, qslotsarg))
	usage();

    if (samplearg != NULL)	/* process -sample if it was present */
      if (! set_sample_factors(cinfo, samplearg)) {
        fprintf(stderr, "%s: can't set sample factors\n", progname);
	usage();
      }

#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) */
}
Beispiel #4
0
parse_switches (j_compress_ptr cinfo, int argc, char **argv,
		int last_file_arg_seen, boolean for_real)
{
  int argn;
  char * arg;
  boolean simple_progressive;
  char * scansarg = NULL;	

  
  simple_progressive = FALSE;
  outfilename = NULL;
  copyoption = JCOPYOPT_DEFAULT;
  transformoption.transform = JXFORM_NONE;
  transformoption.trim = FALSE;
  transformoption.force_grayscale = FALSE;
  cinfo->err->trace_level = 0;

  

  for (argn = 1; argn < argc; argn++) {
    arg = argv[argn];
    if (*arg != '-') {
      
      if (argn <= last_file_arg_seen) {
	outfilename = NULL;	
	continue;		
      }
      break;			
    }
    arg++;			

    if (keymatch(arg, "arithmetic", 1)) {
      
#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)) {
      
      if (++argn >= argc)	
	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)) {
      
      
      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)) {
      
      if (++argn >= argc)	
	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)) {
      
#if TRANSFORMS_SUPPORTED
      transformoption.force_grayscale = TRUE;
#else
      select_transform(JXFORM_NONE);	
#endif

    } else if (keymatch(arg, "maxmemory", 3)) {
      
      long lval;
      char ch = 'x';

      if (++argn >= argc)	
	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)) {
      
#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)) {
      
      if (++argn >= argc)	
	usage();
      outfilename = argv[argn];	

    } else if (keymatch(arg, "progressive", 1)) {
      
#ifdef C_PROGRESSIVE_SUPPORTED
      simple_progressive = TRUE;
      
#else
      fprintf(stderr, "%s: sorry, progressive output was not compiled\n",
	      progname);
      exit(EXIT_FAILURE);
#endif

    } else if (keymatch(arg, "restart", 1)) {
      
      long lval;
      char ch = 'x';

      if (++argn >= argc)	
	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 {
	cinfo->restart_in_rows = (int) lval;
	
      }

    } else if (keymatch(arg, "rotate", 2)) {
      
      if (++argn >= argc)	
	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)) {
      
#ifdef C_MULTISCAN_FILES_SUPPORTED
      if (++argn >= argc)	
	usage();
      scansarg = argv[argn];
      
#else
      fprintf(stderr, "%s: sorry, multi-scan output was not compiled\n",
	      progname);
      exit(EXIT_FAILURE);
#endif

    } else if (keymatch(arg, "transpose", 1)) {
      
      select_transform(JXFORM_TRANSPOSE);

    } else if (keymatch(arg, "transverse", 6)) {
      
      select_transform(JXFORM_TRANSVERSE);

    } else if (keymatch(arg, "trim", 3)) {
      
      transformoption.trim = TRUE;

    } else {
      usage();			
    }
  }

  

  if (for_real) {

#ifdef C_PROGRESSIVE_SUPPORTED
    if (simple_progressive)	
      jpeg_simple_progression(cinfo);
#endif

#ifdef C_MULTISCAN_FILES_SUPPORTED
    if (scansarg != NULL)	
      if (! read_scan_script(cinfo, scansarg))
	usage();
#endif
  }

  return argn;			
}