示例#1
0
int
main (int argc, char **argv)
{
  struct jpeg_decompress_struct cinfo;
  struct jpeg_error_mgr jerr;
#ifdef PROGRESS_REPORT
  struct cdjpeg_progress_mgr progress;
#endif
  int file_index;
  djpeg_dest_ptr dest_mgr = NULL;
  FILE * input_file;
  FILE * output_file;
  JDIMENSION num_scanlines;

  /* On Mac, fetch a command line. */
#ifdef USE_CCOMMAND
  argc = ccommand(&argv);
#endif

  progname = argv[0];
  if (progname == NULL || progname[0] == 0)
    progname = "djpeg";		/* in case C library doesn't provide it */

  /* Initialize the JPEG decompression object with default error handling. */
  cinfo.err = jpeg_std_error(&jerr);
  jpeg_create_decompress(&cinfo);
  /* Add some application-specific error messages (from cderror.h) */
  jerr.addon_message_table = cdjpeg_message_table;
  jerr.first_addon_message = JMSG_FIRSTADDONCODE;
  jerr.last_addon_message = JMSG_LASTADDONCODE;

  /* Insert custom marker processor for COM and APP12.
   * APP12 is used by some digital camera makers for textual info,
   * so we provide the ability to display it as text.
   * If you like, additional APPn marker types can be selected for display,
   * but don't try to override APP0 or APP14 this way (see libjpeg.doc).
   */
  jpeg_set_marker_processor(&cinfo, JPEG_COM, print_text_marker);
  jpeg_set_marker_processor(&cinfo, JPEG_APP0+12, print_text_marker);

  /* Now safe to enable signal catcher. */
#ifdef NEED_SIGNAL_CATCHER
  enable_signal_catcher((j_common_ptr) &cinfo);
#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 ignored; we will rescan the switches after opening
   * the input file.
   * (Exception: tracing level set here controls verbosity for COM markers
   * found during jpeg_read_header...)
   */

  file_index = parse_switches(&cinfo, argc, argv, 0, FALSE);

#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) &cinfo, &progress);
#endif

  /* Specify data source for decompression */
  jpeg_stdio_src(&cinfo, input_file);

  /* Read file header, set default decompression parameters */
  (void) jpeg_read_header(&cinfo, TRUE);

  /* Adjust default decompression parameters by re-parsing the options */
  file_index = parse_switches(&cinfo, argc, argv, 0, TRUE);

  /* Initialize the output module now to let it override any crucial
   * option settings (for instance, GIF wants to force color quantization).
   */
  switch (requested_fmt) {
#ifdef BMP_SUPPORTED
  case FMT_BMP:
    dest_mgr = jinit_write_bmp(&cinfo, FALSE);
    break;
  case FMT_OS2:
    dest_mgr = jinit_write_bmp(&cinfo, TRUE);
    break;
#endif
#ifdef GIF_SUPPORTED
  case FMT_GIF:
    dest_mgr = jinit_write_gif(&cinfo);
    break;
#endif
#ifdef PPM_SUPPORTED
  case FMT_PPM:
    dest_mgr = jinit_write_ppm(&cinfo);
    break;
#endif
#ifdef RLE_SUPPORTED
  case FMT_RLE:
    dest_mgr = jinit_write_rle(&cinfo);
    break;
#endif
#ifdef TARGA_SUPPORTED
  case FMT_TARGA:
    dest_mgr = jinit_write_targa(&cinfo);
    break;
#endif
  default:
    ERREXIT(&cinfo, JERR_UNSUPPORTED_FORMAT);
    break;
  }
  dest_mgr->output_file = output_file;

  /* Start decompressor */
  (void) jpeg_start_decompress(&cinfo);

  /* Write output file header */
  (*dest_mgr->start_output) (&cinfo, dest_mgr);

  /* Process data */
  while (cinfo.output_scanline < cinfo.output_height) {
    num_scanlines = jpeg_read_scanlines(&cinfo, dest_mgr->buffer,
					dest_mgr->buffer_height);
    (*dest_mgr->put_pixel_rows) (&cinfo, dest_mgr, num_scanlines);
  }

#ifdef PROGRESS_REPORT
  /* Hack: count final pass as done in case finish_output does an extra pass.
   * The library won't have updated completed_passes.
   */
  progress.pub.completed_passes = progress.pub.total_passes;
#endif

  /* Finish decompression and release memory.
   * I must do it in this order because output module has allocated memory
   * of lifespan JPOOL_IMAGE; it needs to finish before releasing memory.
   */
  (*dest_mgr->finish_output) (&cinfo, dest_mgr);
  (void) jpeg_finish_decompress(&cinfo);
  jpeg_destroy_decompress(&cinfo);

  /* 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) &cinfo);
#endif

  /* All done. */
  exit(jerr.num_warnings ? EXIT_WARNING : EXIT_SUCCESS);
  return 0;			/* suppress no-return-value warnings */
}
示例#2
0
文件: cjpeg.c 项目: catufunwa/mozjpeg
int
main (int argc, char **argv)
{
  struct jpeg_compress_struct cinfo;
  struct jpeg_error_mgr jerr;
#ifdef PROGRESS_REPORT
  struct cdjpeg_progress_mgr progress;
#endif
  int file_index;
  cjpeg_source_ptr src_mgr;
  FILE * input_file;
  FILE * output_file = NULL;
  unsigned char *outbuffer = NULL;
  unsigned long outsize = 0;
  JDIMENSION num_scanlines;

  /* On Mac, fetch a command line. */
#ifdef USE_CCOMMAND
  argc = ccommand(&argv);
#endif

  progname = argv[0];
  if (progname == NULL || progname[0] == 0)
    progname = "cjpeg";		/* in case C library doesn't provide it */

  /* Initialize the JPEG compression object with default error handling. */
  cinfo.err = jpeg_std_error(&jerr);
  jpeg_create_compress(&cinfo);
  /* Add some application-specific error messages (from cderror.h) */
  jerr.addon_message_table = cdjpeg_message_table;
  jerr.first_addon_message = JMSG_FIRSTADDONCODE;
  jerr.last_addon_message = JMSG_LASTADDONCODE;

  /* Now safe to enable signal catcher. */
#ifdef NEED_SIGNAL_CATCHER
  enable_signal_catcher((j_common_ptr) &cinfo);
#endif

  /* Initialize JPEG parameters.
   * Much of this may be overridden later.
   * In particular, we don't yet know the input file's color space,
   * but we need to provide some value for jpeg_set_defaults() to work.
   */

  cinfo.in_color_space = JCS_RGB; /* arbitrary guess */
  cinfo.use_moz_defaults = TRUE;
  jpeg_set_defaults(&cinfo);

  /* Scan command line to find file names.
   * It is convenient to use just one switch-parsing routine, but the switch
   * values read here are ignored; we will rescan the switches after opening
   * the input file.
   */

  file_index = parse_switches(&cinfo, argc, argv, 0, FALSE);

#ifdef TWO_FILE_COMMANDLINE
  if (!memdst) {
    /* 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 if (!memdst) {
    /* default output file is stdout */
    output_file = write_stdout();
  }

#ifdef PROGRESS_REPORT
  start_progress_monitor((j_common_ptr) &cinfo, &progress);
#endif

  /* Figure out the input file format, and set up to read it. */
  src_mgr = select_file_type(&cinfo, input_file);
  src_mgr->input_file = input_file;

  /* Read the input file header to obtain file size & colorspace. */
  (*src_mgr->start_input) (&cinfo, src_mgr);

  /* Now that we know input colorspace, fix colorspace-dependent defaults */
#if JPEG_RAW_READER
  if (!is_jpeg)
#endif
    jpeg_default_colorspace(&cinfo);

  /* Adjust default compression parameters by re-parsing the options */
  file_index = parse_switches(&cinfo, argc, argv, 0, TRUE);

  /* Specify data destination for compression */
#if JPEG_LIB_VERSION >= 80 || defined(MEM_SRCDST_SUPPORTED)
  if (memdst)
    jpeg_mem_dest(&cinfo, &outbuffer, &outsize);
  else
#endif
    jpeg_stdio_dest(&cinfo, output_file);

  /* Start compressor */
  jpeg_start_compress(&cinfo, TRUE);

  /* Copy metadata */
  if (is_jpeg) {
    jpeg_saved_marker_ptr marker;
    
    /* In the current implementation, we don't actually need to examine the
     * option flag here; we just copy everything that got saved.
     * But to avoid confusion, we do not output JFIF and Adobe APP14 markers
     * if the encoder library already wrote one.
     */
    for (marker = src_mgr->marker_list; marker != NULL; marker = marker->next) {
      if (cinfo.write_JFIF_header &&
          marker->marker == JPEG_APP0 &&
          marker->data_length >= 5 &&
          GETJOCTET(marker->data[0]) == 0x4A &&
          GETJOCTET(marker->data[1]) == 0x46 &&
          GETJOCTET(marker->data[2]) == 0x49 &&
          GETJOCTET(marker->data[3]) == 0x46 &&
          GETJOCTET(marker->data[4]) == 0)
        continue;			/* reject duplicate JFIF */
      if (cinfo.write_Adobe_marker &&
          marker->marker == JPEG_APP0+14 &&
          marker->data_length >= 5 &&
          GETJOCTET(marker->data[0]) == 0x41 &&
          GETJOCTET(marker->data[1]) == 0x64 &&
          GETJOCTET(marker->data[2]) == 0x6F &&
          GETJOCTET(marker->data[3]) == 0x62 &&
          GETJOCTET(marker->data[4]) == 0x65)
        continue;			/* reject duplicate Adobe */
      jpeg_write_marker(&cinfo, marker->marker, marker->data, marker->data_length);
    }
  }
  
  /* Process data */
  while (cinfo.next_scanline < cinfo.image_height) {
    num_scanlines = (*src_mgr->get_pixel_rows) (&cinfo, src_mgr);
#if JPEG_RAW_READER
    if (is_jpeg)
      (void) jpeg_write_raw_data(&cinfo, src_mgr->plane_pointer, num_scanlines);
    else
#endif
      (void) jpeg_write_scanlines(&cinfo, src_mgr->buffer, num_scanlines);
  }

  /* Finish compression and release memory */
  (*src_mgr->finish_input) (&cinfo, src_mgr);
  jpeg_finish_compress(&cinfo);
  jpeg_destroy_compress(&cinfo);

  /* Close files, if we opened them */
  if (input_file != stdin)
    fclose(input_file);
  if (output_file != stdout && output_file != NULL)
    fclose(output_file);

#ifdef PROGRESS_REPORT
  end_progress_monitor((j_common_ptr) &cinfo);
#endif

  if (memdst) {
    fprintf(stderr, "Compressed size:  %lu bytes\n", outsize);
    if (outbuffer != NULL)
      free(outbuffer);
  }

  /* All done. */
  exit(jerr.num_warnings ? EXIT_WARNING : EXIT_SUCCESS);
  return 0;			/* suppress no-return-value warnings */
}
示例#3
0
int
main (int argc, char **argv)
{
  struct jpeg_compress_struct cinfo;
  struct jpeg_error_mgr jerr;
#ifdef PROGRESS_REPORT
  struct cdjpeg_progress_mgr progress;
#endif
  int file_index;
  cjpeg_source_ptr src_mgr;
  FILE * input_file;
  FILE * output_file;
  JDIMENSION num_scanlines;

  /* On Mac, fetch a command line. */
#ifdef USE_CCOMMAND
  argc = ccommand(&argv);
#endif

  progname = argv[0];
  if (progname == NULL || progname[0] == 0)
    progname = "cjpeg";		/* in case C library doesn't provide it */

  /* Initialize the JPEG compression object with default error handling. */
  cinfo.err = jpeg_std_error(&jerr);
  jpeg_create_compress(&cinfo);
  /* Add some application-specific error messages (from cderror.h) */
  jerr.addon_message_table = cdjpeg_message_table;
  jerr.first_addon_message = JMSG_FIRSTADDONCODE;
  jerr.last_addon_message = JMSG_LASTADDONCODE;

  /* Now safe to enable signal catcher. */
#ifdef NEED_SIGNAL_CATCHER
  enable_signal_catcher((j_common_ptr) &cinfo);
#endif

  /* Initialize JPEG parameters.
   * Much of this may be overridden later.
   * In particular, we don't yet know the input file's color space,
   * but we need to provide some value for jpeg_set_defaults() to work.
   */

  cinfo.in_color_space = JCS_RGB; /* arbitrary guess */
  jpeg_set_defaults(&cinfo);

  /* Scan command line to find file names.
   * It is convenient to use just one switch-parsing routine, but the switch
   * values read here are ignored; we will rescan the switches after opening
   * the input file.
   */

  file_index = parse_switches(&cinfo, argc, argv, 0, FALSE);

#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) &cinfo, &progress);
#endif

  /* Figure out the input file format, and set up to read it. */
  src_mgr = select_file_type(&cinfo, input_file);
  src_mgr->input_file = input_file;

  /* Read the input file header to obtain file size & colorspace. */
  (*src_mgr->start_input) (&cinfo, src_mgr);

  /* Now that we know input colorspace, fix colorspace-dependent defaults */
  jpeg_default_colorspace(&cinfo);

  /* Adjust default compression parameters by re-parsing the options */
  file_index = parse_switches(&cinfo, argc, argv, 0, TRUE);

  /* Specify data destination for compression */
  jpeg_stdio_dest(&cinfo, output_file);

  /* Start compressor */
  jpeg_start_compress(&cinfo, TRUE);

  /* Process data */
  while (cinfo.next_scanline < cinfo.image_height) {
    num_scanlines = (*src_mgr->get_pixel_rows) (&cinfo, src_mgr);
    (void) jpeg_write_scanlines(&cinfo, src_mgr->buffer, num_scanlines);
  }

  /* Finish compression and release memory */
  (*src_mgr->finish_input) (&cinfo, src_mgr);
  jpeg_finish_compress(&cinfo);
  jpeg_destroy_compress(&cinfo);

  /* 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) &cinfo);
#endif

  /* All done. */
  exit(jerr.num_warnings ? EXIT_WARNING : EXIT_SUCCESS);
  return 0;			/* suppress no-return-value warnings */
}
示例#4
0
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;
  /* We assume all-in-memory processing and can therefore use only a
   * single file pointer for sequential input and output operation.
   */
  FILE * fp;
  unsigned char *inbuffer = NULL;
  unsigned long insize = 0;
  unsigned char *outbuffer = NULL;
  unsigned long outsize = 0;

  /* On Mac, fetch a command line. */
#ifdef USE_CCOMMAND
  argc = ccommand(&argv);
#endif

  progname = argv[0];
  if (progname == NULL || progname[0] == 0)
    progname = "jpegtran";      /* in case C library doesn't provide it */

  /* Initialize the JPEG decompression object with default error handling. */
  srcinfo.err = jpeg_std_error(&jsrcerr);
  jpeg_create_decompress(&srcinfo);
  /* Initialize the JPEG compression object with default error handling. */
  dstinfo.err = jpeg_std_error(&jdsterr);
  jpeg_create_compress(&dstinfo);
  dstinfo.use_moz_defaults = TRUE;

  /* 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 ((fp = fopen(argv[file_index], READ_BINARY)) == NULL) {
      fprintf(stderr, "%s: can't open %s for reading\n", progname, argv[file_index]);
      exit(EXIT_FAILURE);
    }
  } else {
    /* default input file is stdin */
    fp = read_stdin();
  }

#ifdef PROGRESS_REPORT
  start_progress_monitor((j_common_ptr) &dstinfo, &progress);
#endif

  /* Specify data source for decompression */
  memsrc = dstinfo.use_moz_defaults; /* needed to revert to original */
#if JPEG_LIB_VERSION >= 80 || defined(MEM_SRCDST_SUPPORTED)
  if (memsrc) {
    size_t nbytes;
    do {
      inbuffer = (unsigned char *)realloc(inbuffer, insize + INPUT_BUF_SIZE);
      if (inbuffer == NULL) {
        fprintf(stderr, "%s: memory allocation failure\n", progname);
        exit(EXIT_FAILURE);
      }
      nbytes = JFREAD(fp, &inbuffer[insize], INPUT_BUF_SIZE);
      if (nbytes < INPUT_BUF_SIZE && ferror(fp)) {
        if (file_index < argc)
          fprintf(stderr, "%s: can't read from %s\n", progname,
                  argv[file_index]);
        else
          fprintf(stderr, "%s: can't read from stdin\n", progname);
      }
      insize += (unsigned long)nbytes;
    } while (nbytes == INPUT_BUF_SIZE);
    jpeg_mem_src(&srcinfo, inbuffer, insize);
  } else
#endif
    jpeg_stdio_src(&srcinfo, fp);

  /* Enable saving of extra markers that we want to copy */
  jcopy_markers_setup(&srcinfo, copyoption);

  /* Read file header */
  (void) jpeg_read_header(&srcinfo, TRUE);

  /* 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 */
#if JPEG_LIB_VERSION >= 80 || defined(MEM_SRCDST_SUPPORTED)
  if (dstinfo.use_moz_defaults)
    jpeg_mem_dest(&dstinfo, &outbuffer, &outsize);
  else
#endif
    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);
  
  if (dstinfo.use_moz_defaults) {
    size_t nbytes;
    
    unsigned char *buffer = outbuffer;
    unsigned long size = outsize;
    if (insize < size) {
      size = insize;
      buffer = inbuffer;
    }

    nbytes = JFWRITE(fp, buffer, size);
    if (nbytes < size && ferror(fp)) {
      if (file_index < argc)
        fprintf(stderr, "%s: can't write to %s\n", progname,
                argv[file_index]);
      else
        fprintf(stderr, "%s: can't write to stdout\n", progname);
    }
  }
    
  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 */
}
示例#5
0
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 */
}
int
startup (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 * 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 ignored; we will rescan the switches after opening
   * the input file.
   */

  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);

  /* Read file header */
  (void) jpeg_read_header(&srcinfo, TRUE);

  /* Read source file as DCT coefficients */
  coef_arrays = jpeg_read_coefficients(&srcinfo);

  /* Initialize destination compression parameters from source values */
  jpeg_copy_critical_parameters(&srcinfo, &dstinfo);

  /* 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 */
  jpeg_write_coefficients(&dstinfo, coef_arrays);

  /* ought to copy source comments here... */

  /* 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 */
}
示例#7
0
process_one_file (int argc, char **argv, int old_file_index)
{
  struct jpeg_decompress_struct cinfo;
  struct jpeg_error_mgr jerr;
  char *infilename;
  char workfilename[PATH_MAX];
  const char *default_extension = NULL;
#ifdef PROGRESS_REPORT
  struct cdjpeg_progress_mgr progress;
#endif
  int file_index;
  djpeg_dest_ptr dest_mgr = NULL;
  FILE * input_file = NULL;
  FILE * output_file = NULL;
  JDIMENSION num_scanlines;

  /* Initialize the JPEG decompression object with default error handling. */
  cinfo.err = jpeg_std_error(&jerr);
  jpeg_create_decompress(&cinfo);
  /* Add some application-specific error messages (from cderror.h) */
  jerr.addon_message_table = cdjpeg_message_table;
  jerr.first_addon_message = JMSG_FIRSTADDONCODE;
  jerr.last_addon_message = JMSG_LASTADDONCODE;

  /* Insert custom marker processor for COM and APP12.
   * APP12 is used by some digital camera makers for textual info,
   * so we provide the ability to display it as text.
   * If you like, additional APPn marker types can be selected for display,
   * but don't try to override APP0 or APP14 this way (see libjpeg.doc).
   */
  jpeg_set_marker_processor(&cinfo, JPEG_COM, print_text_marker);
  jpeg_set_marker_processor(&cinfo, JPEG_APP0+12, print_text_marker);

  /* Now safe to enable signal catcher. */
#ifdef NEED_SIGNAL_CATCHER
  enable_signal_catcher((j_common_ptr) &cinfo);
#endif

  /* Scan command line to find next file name.
   * It is convenient to use just one switch-parsing routine, but the switch
   * values read here are ignored; we will rescan the switches after opening
   * the input file.
   * (Exception: tracing level set here controls verbosity for COM markers
   * found during jpeg_read_header...)
   */

  file_index = parse_switches(&cinfo, argc, argv, old_file_index, FALSE);
  if (file_index >= argc) {
    fprintf(stderr, "%s: missing input file name\n", progname);
    usage();
  }

  /* Open the input file. */
  infilename = argv[file_index];
  if ((input_file = fopen(infilename, READ_BINARY)) == NULL) {
    fprintf(stderr, "%s: can't open %s\n", progname, infilename);
    goto fail;
  }

#ifdef PROGRESS_REPORT
  start_progress_monitor((j_common_ptr) &cinfo, &progress);
#endif

  /* Specify data source for decompression */
  jpeg_stdio_src(&cinfo, input_file);

  /* Read file header, set default decompression parameters */
  (void) jpeg_read_header(&cinfo, TRUE);

  /* Adjust default decompression parameters by re-parsing the options */
  file_index = parse_switches(&cinfo, argc, argv, old_file_index, TRUE);

  /* Initialize the output module now to let it override any crucial
   * option settings (for instance, GIF wants to force color quantization).
   */
  switch (requested_fmt) {
#ifdef BMP_SUPPORTED
  case FMT_BMP:
    dest_mgr = jinit_write_bmp(&cinfo, FALSE);
    default_extension = ".bmp";
    break;
  case FMT_OS2:
    dest_mgr = jinit_write_bmp(&cinfo, TRUE);
    default_extension = ".bmp";
    break;
#endif
#ifdef GIF_SUPPORTED
  case FMT_GIF:
    dest_mgr = jinit_write_gif(&cinfo);
    default_extension = ".gif";
    break;
#endif
#ifdef PPM_SUPPORTED
  case FMT_PPM:
    dest_mgr = jinit_write_ppm(&cinfo);
    default_extension = ".ppm";
    break;
#endif
#ifdef RLE_SUPPORTED
  case FMT_RLE:
    dest_mgr = jinit_write_rle(&cinfo);
    default_extension = ".rle";
    break;
#endif
#ifdef TARGA_SUPPORTED
  case FMT_TARGA:
    dest_mgr = jinit_write_targa(&cinfo);
    default_extension = ".tga";
    break;
#endif
  default:
    ERREXIT(&cinfo, JERR_UNSUPPORTED_FORMAT);
    break;
  }

  /* If user didn't supply -outfile switch, select output file name. */
  if (outfilename == NULL) {
    int i;

    outfilename = workfilename;
    /* Make outfilename be infilename with appropriate extension */
    strcpy(outfilename, infilename);
    for (i = strlen(outfilename)-1; i >= 0; i--) {
      switch (outfilename[i]) {
      case ':':
      case '/':
      case '\\':
	i = 0;			/* stop scanning */
	break;
      case '.':
	outfilename[i] = '\0';	/* lop off existing extension */
	i = 0;			/* stop scanning */
	break;
      default:
	break;			/* keep scanning */
      }
    }
    strcat(outfilename, default_extension);
  }

  fprintf(stderr, "Decompressing %s => %s\n", infilename, outfilename);
#ifndef NO_OVERWRITE_CHECK
  if (! is_write_ok(outfilename))
    goto fail;
#endif

  /* Open the output file. */
  if ((output_file = fopen(outfilename, WRITE_BINARY)) == NULL) {
    fprintf(stderr, "%s: can't create %s\n", progname, outfilename);
    goto fail;
  }
  dest_mgr->output_file = output_file;

  /* Start decompressor */
  (void) jpeg_start_decompress(&cinfo);

  /* Write output file header */
  (*dest_mgr->start_output) (&cinfo, dest_mgr);

  /* Process data */
  while (cinfo.output_scanline < cinfo.output_height) {
    num_scanlines = jpeg_read_scanlines(&cinfo, dest_mgr->buffer,
					dest_mgr->buffer_height);
    (*dest_mgr->put_pixel_rows) (&cinfo, dest_mgr, num_scanlines);
  }

#ifdef PROGRESS_REPORT
  /* Hack: count final pass as done in case finish_output does an extra pass.
   * The library won't have updated completed_passes.
   */
  progress.pub.completed_passes = progress.pub.total_passes;
#endif

  /* Finish decompression and release memory.
   * I must do it in this order because output module has allocated memory
   * of lifespan JPOOL_IMAGE; it needs to finish before releasing memory.
   */
  (*dest_mgr->finish_output) (&cinfo, dest_mgr);
  (void) jpeg_finish_decompress(&cinfo);

  /* Clean up and exit */
fail:
  jpeg_destroy_decompress(&cinfo);

  if (input_file != NULL) fclose(input_file);
  if (output_file != NULL) fclose(output_file);

#ifdef PROGRESS_REPORT
  end_progress_monitor((j_common_ptr) &cinfo);
#endif

  /* Disable signal catcher. */
#ifdef NEED_SIGNAL_CATCHER
  enable_signal_catcher((j_common_ptr) NULL);
#endif

  return file_index;
}
示例#8
0
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;

  
#ifdef USE_CCOMMAND
  argc = ccommand(&argv);
#endif

  progname = argv[0];
  if (progname == NULL || progname[0] == 0)
    progname = "jpegtran";	

  
  srcinfo.err = jpeg_std_error(&jsrcerr);
  jpeg_create_decompress(&srcinfo);
  
  dstinfo.err = jpeg_std_error(&jdsterr);
  jpeg_create_compress(&dstinfo);

#ifdef NEED_SIGNAL_CATCHER
  enable_signal_catcher((j_common_ptr) &srcinfo);
#endif


  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
  
  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
  
  if (file_index < argc-1) {
    fprintf(stderr, "%s: only one input file\n", progname);
    usage();
  }
#endif 

  
  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 {
    
    input_file = read_stdin();
  }

  
  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 {
    
    output_file = write_stdout();
  }

#ifdef PROGRESS_REPORT
  start_progress_monitor((j_common_ptr) &dstinfo, &progress);
#endif

  
  jpeg_stdio_src(&srcinfo, input_file);

  
  jcopy_markers_setup(&srcinfo, copyoption);

  
  (void) jpeg_read_header(&srcinfo, TRUE);

#if TRANSFORMS_SUPPORTED
  jtransform_request_workspace(&srcinfo, &transformoption);
#endif

  
  src_coef_arrays = jpeg_read_coefficients(&srcinfo);

  
  jpeg_copy_critical_parameters(&srcinfo, &dstinfo);

#if TRANSFORMS_SUPPORTED
  dst_coef_arrays = jtransform_adjust_parameters(&srcinfo, &dstinfo,
						 src_coef_arrays,
						 &transformoption);
#else
  dst_coef_arrays = src_coef_arrays;
#endif

  
  file_index = parse_switches(&dstinfo, argc, argv, 0, TRUE);

  
  jpeg_stdio_dest(&dstinfo, output_file);

  /* Start compressor (note no image data is actually written here) */
  jpeg_write_coefficients(&dstinfo, dst_coef_arrays);

  
  jcopy_markers_execute(&srcinfo, &dstinfo, copyoption);

  
#if TRANSFORMS_SUPPORTED
  jtransform_execute_transformation(&srcinfo, &dstinfo,
				    src_coef_arrays,
				    &transformoption);
#endif

  
  jpeg_finish_compress(&dstinfo);
  jpeg_destroy_compress(&dstinfo);
  (void) jpeg_finish_decompress(&srcinfo);
  jpeg_destroy_decompress(&srcinfo);

  
  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

  
  exit(jsrcerr.num_warnings + jdsterr.num_warnings ?EXIT_WARNING:EXIT_SUCCESS);
  return 0;			
}
示例#9
0
int
main (int argc, char **argv)
{
  struct jpegxr_file_struct finfo;
  struct jpeg_error_mgr jerr;
#ifdef PROGRESS_REPORT
  struct cdjpeg_progress_mgr progress;
#endif
  int file_index;
  djpeg_dest_ptr dest_mgr = NULL;
  FILE * input_file;
  FILE * output_file;
  JDIMENSION num_scanlines;

  /* On Mac, fetch a command line. */
#ifdef USE_CCOMMAND
  argc = ccommand(&argv);
#endif

  progname = argv[0];
  if (progname == NULL || progname[0] == 0)
    progname = "djpeg-xr";		/* in case C library doesn't provide it */

  /* Initialize the JPEG-XR file decompression object with default error
   * handling. */
  finfo.err = jpeg_std_error(&jerr);
  jpegxr_file_create_decompress(&finfo);
  /* Add some application-specific error messages (from cderror.h) */
  jerr.addon_message_table = cdjpeg_message_table;
  jerr.first_addon_message = JMSG_FIRSTADDONCODE;
  jerr.last_addon_message = JMSG_LASTADDONCODE;

  /* Now safe to enable signal catcher. */
#ifdef NEED_SIGNAL_CATCHER
  enable_signal_catcher((j_common_ptr) &finfo);
#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 ignored; we will rescan the switches after opening
   * the input file.
   * (Exception: tracing level set here controls verbosity for COM markers
   * found during jpeg_read_header...)
   */
  file_index = parse_switches(&finfo, argc, argv, 0, FALSE);

#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) &finfo, &progress);
#endif

  /* Specify data source for decompression */
  jpeg_stdio_src((j_common_ptr) &finfo, input_file);
  
  /* Read file header */
  (void) jpegxr_file_read_metadata(&finfo);
  
  /* TODO - initialise the output module here */
  
  /* Start decompressor */
  (void) jpegxr_file_start_decompress(&finfo);

  /* Write output file header */
  //(*dest_mgr->start_output) (&finfo, dest_mgr);
  /* TODO - process data, equivalent to jpeg_read_scanlines() */
  //(*dest_mgr->finish_output) (&finfo, dest_mgr);
  
  /* Finish decompression and release memory.
   * Must be done in this order because output module has allocated memory
   * of lifespan JPOOL_IMAGE; it needs to finish before releasing memory.
   */
  (void) jpegxr_file_finish_decompress(&finfo);
  jpegxr_file_destroy(&finfo);

  /* 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) &finfo);
#endif

  /* All done. */
  exit(jerr.num_warnings ? EXIT_WARNING : EXIT_SUCCESS);
  return 0;			/* suppress no-return-value warnings */
}
示例#10
0
int
main (int argc, char **argv)
{
    struct jpeg_decompress_struct cinfo;
    struct jpeg_error_mgr jerr;
#ifdef PROGRESS_REPORT
    struct cdjpeg_progress_mgr progress;
#endif
    int file_index;
    djpeg_dest_ptr dest_mgr = NULL;
    FILE * input_file;
    FILE * output_file;
    unsigned char *inbuffer = NULL;
    unsigned long insize = 0;
    JDIMENSION num_scanlines;

    /* On Mac, fetch a command line. */
#ifdef USE_CCOMMAND
    argc = ccommand(&argv);
#endif

    progname = argv[0];
    if (progname == NULL || progname[0] == 0)
        progname = "djpeg";         /* in case C library doesn't provide it */

    /* Initialize the JPEG decompression object with default error handling. */
    cinfo.err = jpeg_std_error(&jerr);
    jpeg_create_decompress(&cinfo);
    /* Add some application-specific error messages (from cderror.h) */
    jerr.addon_message_table = cdjpeg_message_table;
    jerr.first_addon_message = JMSG_FIRSTADDONCODE;
    jerr.last_addon_message = JMSG_LASTADDONCODE;

    /* Insert custom marker processor for COM and APP12.
     * APP12 is used by some digital camera makers for textual info,
     * so we provide the ability to display it as text.
     * If you like, additional APPn marker types can be selected for display,
     * but don't try to override APP0 or APP14 this way (see libjpeg.txt).
     */
    jpeg_set_marker_processor(&cinfo, JPEG_COM, print_text_marker);
    jpeg_set_marker_processor(&cinfo, JPEG_APP0+12, print_text_marker);

    /* Scan command line to find file names. */
    /* It is convenient to use just one switch-parsing routine, but the switch
     * values read here are ignored; we will rescan the switches after opening
     * the input file.
     * (Exception: tracing level set here controls verbosity for COM markers
     * found during jpeg_read_header...)
     */

    file_index = parse_switches(&cinfo, argc, argv, 0, FALSE);

#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) &cinfo, &progress);
#endif

    /* Specify data source for decompression */
#if JPEG_LIB_VERSION >= 80 || defined(MEM_SRCDST_SUPPORTED)
    if (memsrc) {
        size_t nbytes;
        do {
            inbuffer = (unsigned char *)realloc(inbuffer, insize + INPUT_BUF_SIZE);
            if (inbuffer == NULL) {
                fprintf(stderr, "%s: memory allocation failure\n", progname);
                exit(EXIT_FAILURE);
            }
            nbytes = JFREAD(input_file, &inbuffer[insize], INPUT_BUF_SIZE);
            if (nbytes < INPUT_BUF_SIZE && ferror(input_file)) {
                if (file_index < argc)
                    fprintf(stderr, "%s: can't read from %s\n", progname,
                            argv[file_index]);
                else
                    fprintf(stderr, "%s: can't read from stdin\n", progname);
            }
            insize += (unsigned long)nbytes;
        } while (nbytes == INPUT_BUF_SIZE);
        fprintf(stderr, "Compressed size:  %lu bytes\n", insize);
        jpeg_mem_src(&cinfo, inbuffer, insize);
    } else
#endif
        jpeg_stdio_src(&cinfo, input_file);

    /* Read file header, set default decompression parameters */
    (void) jpeg_read_header(&cinfo, TRUE);

    /* Adjust default decompression parameters by re-parsing the options */
    file_index = parse_switches(&cinfo, argc, argv, 0, TRUE);

    /* Initialize the output module now to let it override any crucial
     * option settings (for instance, GIF wants to force color quantization).
     */
    switch (requested_fmt) {
#ifdef BMP_SUPPORTED
    case FMT_BMP:
        dest_mgr = jinit_write_bmp(&cinfo, FALSE);
        break;
    case FMT_OS2:
        dest_mgr = jinit_write_bmp(&cinfo, TRUE);
        break;
#endif
#ifdef GIF_SUPPORTED
    case FMT_GIF:
        dest_mgr = jinit_write_gif(&cinfo);
        break;
#endif
#ifdef PPM_SUPPORTED
    case FMT_PPM:
        dest_mgr = jinit_write_ppm(&cinfo);
        break;
#endif
#ifdef RLE_SUPPORTED
    case FMT_RLE:
        dest_mgr = jinit_write_rle(&cinfo);
        break;
#endif
#ifdef TARGA_SUPPORTED
    case FMT_TARGA:
        dest_mgr = jinit_write_targa(&cinfo);
        break;
#endif
    default:
        ERREXIT(&cinfo, JERR_UNSUPPORTED_FORMAT);
        break;
    }
    dest_mgr->output_file = output_file;

    /* Start decompressor */
    (void) jpeg_start_decompress(&cinfo);

    /* Strip decode */
    if (strip || skip) {
        JDIMENSION tmp;

        /* Check for valid endY.  We cannot check this value until after
         * jpeg_start_decompress() is called.  Note that we have already verified
         * that startY <= endY.
         */
        if (endY > cinfo.output_height - 1) {
            fprintf(stderr, "%s: strip %d-%d exceeds image height %d\n", progname,
                    startY, endY, cinfo.output_height);
            exit(EXIT_FAILURE);
        }

        /* Write output file header.  This is a hack to ensure that the destination
         * manager creates an image of the proper size for the partial decode.
         */
        tmp = cinfo.output_height;
        cinfo.output_height = endY - startY + 1;
        if (skip)
            cinfo.output_height = tmp - cinfo.output_height;
        (*dest_mgr->start_output) (&cinfo, dest_mgr);
        cinfo.output_height = tmp;

        /* Process data */
        if (skip) {
            while (cinfo.output_scanline < startY) {
                num_scanlines = jpeg_read_scanlines(&cinfo, dest_mgr->buffer,
                                                    dest_mgr->buffer_height);
                (*dest_mgr->put_pixel_rows) (&cinfo, dest_mgr, num_scanlines);
            }
            jpeg_skip_scanlines(&cinfo, endY - startY + 1);
            while (cinfo.output_scanline < cinfo.output_height) {
                num_scanlines = jpeg_read_scanlines(&cinfo, dest_mgr->buffer,
                                                    dest_mgr->buffer_height);
                (*dest_mgr->put_pixel_rows) (&cinfo, dest_mgr, num_scanlines);
            }
        } else {
            jpeg_skip_scanlines(&cinfo, startY);
            while (cinfo.output_scanline <= endY) {
                num_scanlines = jpeg_read_scanlines(&cinfo, dest_mgr->buffer,
                                                    dest_mgr->buffer_height);
                (*dest_mgr->put_pixel_rows) (&cinfo, dest_mgr, num_scanlines);
            }
            jpeg_skip_scanlines(&cinfo, cinfo.output_height - endY + 1);
        }

        /* Normal full image decode */
    } else {
        /* Write output file header */
        (*dest_mgr->start_output) (&cinfo, dest_mgr);

        /* Process data */
        while (cinfo.output_scanline < cinfo.output_height) {
            num_scanlines = jpeg_read_scanlines(&cinfo, dest_mgr->buffer,
                                                dest_mgr->buffer_height);
            (*dest_mgr->put_pixel_rows) (&cinfo, dest_mgr, num_scanlines);
        }
    }

#ifdef PROGRESS_REPORT
    /* Hack: count final pass as done in case finish_output does an extra pass.
     * The library won't have updated completed_passes.
     */
    progress.pub.completed_passes = progress.pub.total_passes;
#endif

    /* Finish decompression and release memory.
     * I must do it in this order because output module has allocated memory
     * of lifespan JPOOL_IMAGE; it needs to finish before releasing memory.
     */
    (*dest_mgr->finish_output) (&cinfo, dest_mgr);
    (void) jpeg_finish_decompress(&cinfo);
    jpeg_destroy_decompress(&cinfo);

    /* 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) &cinfo);
#endif

    if (memsrc && inbuffer != NULL)
        free(inbuffer);

    /* All done. */
    exit(jerr.num_warnings ? EXIT_WARNING : EXIT_SUCCESS);
    return 0;                     /* suppress no-return-value warnings */
}