workbench/libs/jpeg/djpeg.c

   1 /*
   2  * djpeg.c
   3  *
   4  * Copyright (C) 1991-1997, Thomas G. Lane.
   5  * Modified 2009-2015 by Guido Vollbeding.
   6  * This file is part of the Independent JPEG Group's software.
   7  * For conditions of distribution and use, see the accompanying README file.
   8  *
   9  * This file contains a command-line user interface for the JPEG decompressor.
  10  * It should work on any system with Unix- or MS-DOS-style command lines.
  11  *
  12  * Two different command line styles are permitted, depending on the
  13  * compile-time switch TWO_FILE_COMMANDLINE:
  14  *      djpeg [options]  inputfile outputfile
  15  *      djpeg [options]  [inputfile]
  16  * In the second style, output is always to standard output, which you'd
  17  * normally redirect to a file or pipe to some other program.  Input is
  18  * either from a named file or from standard input (typically redirected).
  19  * The second style is convenient on Unix but is unhelpful on systems that
  20  * don't support pipes.  Also, you MUST use the first style if your system
  21  * doesn't do binary I/O to stdin/stdout.
  22  * To simplify script writing, the "-outfile" switch is provided.  The syntax
  23  *      djpeg [options]  -outfile outputfile  inputfile
  24  * works regardless of which command line style is used.
  25  */
  26
  27 #include "cdjpeg.h"             /* Common decls for cjpeg/djpeg applications */
  28 #include "jversion.h"           /* for version message */
  29
  30 #include <ctype.h>              /* to declare isprint() */
  31
  32 #ifdef USE_CCOMMAND             /* command-line reader for Macintosh */
  33 #ifdef __MWERKS__
  34 #include <SIOUX.h>              /* Metrowerks needs this */
  35 #include <console.h>            /* ... and this */
  36 #endif
  37 #ifdef THINK_C
  38 #include <console.h>            /* Think declares it here */
  39 #endif
  40 #endif
  41
  42
  43 /* Create the add-on message string table. */
  44
  45 #define JMESSAGE(code,string)   string ,
  46
  47 static const char * const cdjpeg_message_table[] = {
  48 #include "cderror.h"
  49   NULL
  50 };
  51
  52
  53 /*
  54  * This list defines the known output image formats
  55  * (not all of which need be supported by a given version).
  56  * You can change the default output format by defining DEFAULT_FMT;
  57  * indeed, you had better do so if you undefine PPM_SUPPORTED.
  58  */
  59
  60 typedef enum {
  61         FMT_BMP,                /* BMP format (Windows flavor) */
  62         FMT_GIF,                /* GIF format */
  63         FMT_OS2,                /* BMP format (OS/2 flavor) */
  64         FMT_PPM,                /* PPM/PGM (PBMPLUS formats) */
  65         FMT_RLE,                /* RLE format */
  66         FMT_TARGA,              /* Targa format */
  67         FMT_TIFF                /* TIFF format */
  68 } IMAGE_FORMATS;
  69
  70 #ifndef DEFAULT_FMT             /* so can override from CFLAGS in Makefile */
  71 #define DEFAULT_FMT     FMT_PPM
  72 #endif
  73
  74 static IMAGE_FORMATS requested_fmt;
  75
  76
  77 /*
  78  * Argument-parsing code.
  79  * The switch parser is designed to be useful with DOS-style command line
  80  * syntax, ie, intermixed switches and file names, where only the switches
  81  * to the left of a given file name affect processing of that file.
  82  * The main program in this file doesn't actually use this capability...
  83  */
  84
  85
  86 static const char * progname;   /* program name for error messages */
  87 static char * outfilename;      /* for -outfile switch */
  88
  89
  90 LOCAL(void)
  91 usage (void)
  92 /* complain about bad command line */
  93 {
  94   fprintf(stderr, "usage: %s [switches] ", progname);
  95 #ifdef TWO_FILE_COMMANDLINE
  96   fprintf(stderr, "inputfile outputfile\n");
  97 #else
  98   fprintf(stderr, "[inputfile]\n");
  99 #endif
 100
 101   fprintf(stderr, "Switches (names may be abbreviated):\n");
 102   fprintf(stderr, "  -colors N      Reduce image to no more than N colors\n");
 103   fprintf(stderr, "  -fast          Fast, low-quality processing\n");
 104   fprintf(stderr, "  -grayscale     Force grayscale output\n");
 105   fprintf(stderr, "  -rgb           Force RGB output\n");
 106 #ifdef IDCT_SCALING_SUPPORTED
 107   fprintf(stderr, "  -scale M/N     Scale output image by fraction M/N, eg, 1/8\n");
 108 #endif
 109 #ifdef BMP_SUPPORTED
 110   fprintf(stderr, "  -bmp           Select BMP output format (Windows style)%s\n",
 111           (DEFAULT_FMT == FMT_BMP ? " (default)" : ""));
 112 #endif
 113 #ifdef GIF_SUPPORTED
 114   fprintf(stderr, "  -gif           Select GIF output format%s\n",
 115           (DEFAULT_FMT == FMT_GIF ? " (default)" : ""));
 116 #endif
 117 #ifdef BMP_SUPPORTED
 118   fprintf(stderr, "  -os2           Select BMP output format (OS/2 style)%s\n",
 119           (DEFAULT_FMT == FMT_OS2 ? " (default)" : ""));
 120 #endif
 121 #ifdef PPM_SUPPORTED
 122   fprintf(stderr, "  -pnm           Select PBMPLUS (PPM/PGM) output format%s\n",
 123           (DEFAULT_FMT == FMT_PPM ? " (default)" : ""));
 124 #endif
 125 #ifdef RLE_SUPPORTED
 126   fprintf(stderr, "  -rle           Select Utah RLE output format%s\n",
 127           (DEFAULT_FMT == FMT_RLE ? " (default)" : ""));
 128 #endif
 129 #ifdef TARGA_SUPPORTED
 130   fprintf(stderr, "  -targa         Select Targa output format%s\n",
 131           (DEFAULT_FMT == FMT_TARGA ? " (default)" : ""));
 132 #endif
 133   fprintf(stderr, "Switches for advanced users:\n");
 134 #ifdef DCT_ISLOW_SUPPORTED
 135   fprintf(stderr, "  -dct int       Use integer DCT method%s\n",
 136           (JDCT_DEFAULT == JDCT_ISLOW ? " (default)" : ""));
 137 #endif
 138 #ifdef DCT_IFAST_SUPPORTED
 139   fprintf(stderr, "  -dct fast      Use fast integer DCT (less accurate)%s\n",
 140           (JDCT_DEFAULT == JDCT_IFAST ? " (default)" : ""));
 141 #endif
 142 #ifdef DCT_FLOAT_SUPPORTED
 143   fprintf(stderr, "  -dct float     Use floating-point DCT method%s\n",
 144           (JDCT_DEFAULT == JDCT_FLOAT ? " (default)" : ""));
 145 #endif
 146   fprintf(stderr, "  -dither fs     Use F-S dithering (default)\n");
 147   fprintf(stderr, "  -dither none   Don't use dithering in quantization\n");
 148   fprintf(stderr, "  -dither ordered  Use ordered dither (medium speed, quality)\n");
 149 #ifdef QUANT_2PASS_SUPPORTED
 150   fprintf(stderr, "  -map FILE      Map to colors used in named image file\n");
 151 #endif
 152   fprintf(stderr, "  -nosmooth      Don't use high-quality upsampling\n");
 153 #ifdef QUANT_1PASS_SUPPORTED
 154   fprintf(stderr, "  -onepass       Use 1-pass quantization (fast, low quality)\n");
 155 #endif
 156   fprintf(stderr, "  -maxmemory N   Maximum memory to use (in kbytes)\n");
 157   fprintf(stderr, "  -outfile name  Specify name for output file\n");
 158   fprintf(stderr, "  -verbose  or  -debug   Emit debug output\n");
 159   exit(EXIT_FAILURE);
 160 }
 161
 162
 163 LOCAL(int)
 164 parse_switches (j_decompress_ptr cinfo, int argc, char **argv,
 165                 int last_file_arg_seen, boolean for_real)
 166 /* Parse optional switches.
 167  * Returns argv[] index of first file-name argument (== argc if none).
 168  * Any file names with indexes <= last_file_arg_seen are ignored;
 169  * they have presumably been processed in a previous iteration.
 170  * (Pass 0 for last_file_arg_seen on the first or only iteration.)
 171  * for_real is FALSE on the first (dummy) pass; we may skip any expensive
 172  * processing.
 173  */
 174 {
 175   int argn;
 176   char * arg;
 177
 178   /* Set up default JPEG parameters. */
 179   requested_fmt = DEFAULT_FMT;  /* set default output file format */
 180   outfilename = NULL;
 181   cinfo->err->trace_level = 0;
 182
 183   /* Scan command line options, adjust parameters */
 184
 185   for (argn = 1; argn < argc; argn++) {
 186     arg = argv[argn];
 187     if (*arg != '-') {
 188       /* Not a switch, must be a file name argument */
 189       if (argn <= last_file_arg_seen) {
 190         outfilename = NULL;     /* -outfile applies to just one input file */
 191         continue;               /* ignore this name if previously processed */
 192       }
 193       break;                    /* else done parsing switches */
 194     }
 195     arg++;                      /* advance past switch marker character */
 196
 197     if (keymatch(arg, "bmp", 1)) {
 198       /* BMP output format. */
 199       requested_fmt = FMT_BMP;
 200
 201     } else if (keymatch(arg, "colors", 1) || keymatch(arg, "colours", 1) ||
 202                keymatch(arg, "quantize", 1) || keymatch(arg, "quantise", 1)) {
 203       /* Do color quantization. */
 204       int val;
 205
 206       if (++argn >= argc)       /* advance to next argument */
 207         usage();
 208       if (sscanf(argv[argn], "%d", &val) != 1)
 209         usage();
 210       cinfo->desired_number_of_colors = val;
 211       cinfo->quantize_colors = TRUE;
 212
 213     } else if (keymatch(arg, "dct", 2)) {
 214       /* Select IDCT algorithm. */
 215       if (++argn >= argc)       /* advance to next argument */
 216         usage();
 217       if (keymatch(argv[argn], "int", 1)) {
 218         cinfo->dct_method = JDCT_ISLOW;
 219       } else if (keymatch(argv[argn], "fast", 2)) {
 220         cinfo->dct_method = JDCT_IFAST;
 221       } else if (keymatch(argv[argn], "float", 2)) {
 222         cinfo->dct_method = JDCT_FLOAT;
 223       } else
 224         usage();
 225
 226     } else if (keymatch(arg, "dither", 2)) {
 227       /* Select dithering algorithm. */
 228       if (++argn >= argc)       /* advance to next argument */
 229         usage();
 230       if (keymatch(argv[argn], "fs", 2)) {
 231         cinfo->dither_mode = JDITHER_FS;
 232       } else if (keymatch(argv[argn], "none", 2)) {
 233         cinfo->dither_mode = JDITHER_NONE;
 234       } else if (keymatch(argv[argn], "ordered", 2)) {
 235         cinfo->dither_mode = JDITHER_ORDERED;
 236       } else
 237         usage();
 238
 239     } else if (keymatch(arg, "debug", 1) || keymatch(arg, "verbose", 1)) {
 240       /* Enable debug printouts. */
 241       /* On first -d, print version identification */
 242       static boolean printed_version = FALSE;
 243
 244       if (! printed_version) {
 245         fprintf(stderr, "Independent JPEG Group's DJPEG, version %s\n%s\n",
 246                 JVERSION, JCOPYRIGHT);
 247         printed_version = TRUE;
 248       }
 249       cinfo->err->trace_level++;
 250
 251     } else if (keymatch(arg, "fast", 1)) {
 252       /* Select recommended processing options for quick-and-dirty output. */
 253       cinfo->two_pass_quantize = FALSE;
 254       cinfo->dither_mode = JDITHER_ORDERED;
 255       if (! cinfo->quantize_colors) /* don't override an earlier -colors */
 256         cinfo->desired_number_of_colors = 216;
 257       cinfo->dct_method = JDCT_FASTEST;
 258       cinfo->do_fancy_upsampling = FALSE;
 259
 260     } else if (keymatch(arg, "gif", 1)) {
 261       /* GIF output format. */
 262       requested_fmt = FMT_GIF;
 263
 264     } else if (keymatch(arg, "grayscale", 2) || keymatch(arg, "greyscale",2)) {
 265       /* Force monochrome output. */
 266       cinfo->out_color_space = JCS_GRAYSCALE;
 267
 268     } else if (keymatch(arg, "rgb", 3)) {
 269       /* Force RGB output. */
 270       cinfo->out_color_space = JCS_RGB;
 271
 272     } else if (keymatch(arg, "map", 3)) {
 273       /* Quantize to a color map taken from an input file. */
 274       if (++argn >= argc)       /* advance to next argument */
 275         usage();
 276       if (for_real) {           /* too expensive to do twice! */
 277 #ifdef QUANT_2PASS_SUPPORTED    /* otherwise can't quantize to supplied map */
 278         FILE * mapfile;
 279
 280         if ((mapfile = fopen(argv[argn], READ_BINARY)) == NULL) {
 281           fprintf(stderr, "%s: can't open %s\n", progname, argv[argn]);
 282           exit(EXIT_FAILURE);
 283         }
 284         read_color_map(cinfo, mapfile);
 285         fclose(mapfile);
 286         cinfo->quantize_colors = TRUE;
 287 #else
 288         ERREXIT(cinfo, JERR_NOT_COMPILED);
 289 #endif
 290       }
 291
 292     } else if (keymatch(arg, "maxmemory", 3)) {
 293       /* Maximum memory in Kb (or Mb with 'm'). */
 294       long lval;
 295       char ch = 'x';
 296
 297       if (++argn >= argc)       /* advance to next argument */
 298         usage();
 299       if (sscanf(argv[argn], "%ld%c", &lval, &ch) < 1)
 300         usage();
 301       if (ch == 'm' || ch == 'M')
 302         lval *= 1000L;
 303       cinfo->mem->max_memory_to_use = lval * 1000L;
 304
 305     } else if (keymatch(arg, "nosmooth", 3)) {
 306       /* Suppress fancy upsampling. */
 307       cinfo->do_fancy_upsampling = FALSE;
 308
 309     } else if (keymatch(arg, "onepass", 3)) {
 310       /* Use fast one-pass quantization. */
 311       cinfo->two_pass_quantize = FALSE;
 312
 313     } else if (keymatch(arg, "os2", 3)) {
 314       /* BMP output format (OS/2 flavor). */
 315       requested_fmt = FMT_OS2;
 316
 317     } else if (keymatch(arg, "outfile", 4)) {
 318       /* Set output file name. */
 319       if (++argn >= argc)       /* advance to next argument */
 320         usage();
 321       outfilename = argv[argn]; /* save it away for later use */
 322
 323     } else if (keymatch(arg, "pnm", 1) || keymatch(arg, "ppm", 1)) {
 324       /* PPM/PGM output format. */
 325       requested_fmt = FMT_PPM;
 326
 327     } else if (keymatch(arg, "rle", 1)) {
 328       /* RLE output format. */
 329       requested_fmt = FMT_RLE;
 330
 331     } else if (keymatch(arg, "scale", 1)) {
 332       /* Scale the output image by a fraction M/N. */
 333       if (++argn >= argc)       /* advance to next argument */
 334         usage();
 335       if (sscanf(argv[argn], "%u/%u",
 336                  &cinfo->scale_num, &cinfo->scale_denom) < 1)
 337         usage();
 338
 339     } else if (keymatch(arg, "targa", 1)) {
 340       /* Targa output format. */
 341       requested_fmt = FMT_TARGA;
 342
 343     } else {
 344       usage();                  /* bogus switch */
 345     }
 346   }
 347
 348   return argn;                  /* return index of next arg (file name) */
 349 }
 350
 351
 352 /*
 353  * Marker processor for COM and interesting APPn markers.
 354  * This replaces the library's built-in processor, which just skips the marker.
 355  * We want to print out the marker as text, to the extent possible.
 356  * Note this code relies on a non-suspending data source.
 357  */
 358
 359 LOCAL(unsigned int)
 360 jpeg_getc (j_decompress_ptr cinfo)
 361 /* Read next byte */
 362 {
 363   struct jpeg_source_mgr * datasrc = cinfo->src;
 364
 365   if (datasrc->bytes_in_buffer == 0) {
 366     if (! (*datasrc->fill_input_buffer) (cinfo))
 367       ERREXIT(cinfo, JERR_CANT_SUSPEND);
 368   }
 369   datasrc->bytes_in_buffer--;
 370   return GETJOCTET(*datasrc->next_input_byte++);
 371 }
 372
 373
 374 METHODDEF(boolean)
 375 print_text_marker (j_decompress_ptr cinfo)
 376 {
 377   boolean traceit = (cinfo->err->trace_level >= 1);
 378   INT32 length;
 379   unsigned int ch;
 380   unsigned int lastch = 0;
 381
 382   length = jpeg_getc(cinfo) << 8;
 383   length += jpeg_getc(cinfo);
 384   length -= 2;                  /* discount the length word itself */
 385
 386   if (traceit) {
 387     if (cinfo->unread_marker == JPEG_COM)
 388       fprintf(stderr, "Comment, length %ld:\n", (long) length);
 389     else                        /* assume it is an APPn otherwise */
 390       fprintf(stderr, "APP%d, length %ld:\n",
 391               cinfo->unread_marker - JPEG_APP0, (long) length);
 392   }
 393
 394   while (--length >= 0) {
 395     ch = jpeg_getc(cinfo);
 396     if (traceit) {
 397       /* Emit the character in a readable form.
 398        * Nonprintables are converted to \nnn form,
 399        * while \ is converted to \\.
 400        * Newlines in CR, CR/LF, or LF form will be printed as one newline.
 401        */
 402       if (ch == '\r') {
 403         fprintf(stderr, "\n");
 404       } else if (ch == '\n') {
 405         if (lastch != '\r')
 406           fprintf(stderr, "\n");
 407       } else if (ch == '\\') {
 408         fprintf(stderr, "\\\\");
 409       } else if (isprint(ch)) {
 410         putc(ch, stderr);
 411       } else {
 412         fprintf(stderr, "\\%03o", ch);
 413       }
 414       lastch = ch;
 415     }
 416   }
 417
 418   if (traceit)
 419     fprintf(stderr, "\n");
 420
 421   return TRUE;
 422 }
 423
 424
 425 /*
 426  * The main program.
 427  */
 428
 429 int
 430 main (int argc, char **argv)
 431 {
 432   struct jpeg_decompress_struct cinfo;
 433   struct jpeg_error_mgr jerr;
 434 #ifdef PROGRESS_REPORT
 435   struct cdjpeg_progress_mgr progress;
 436 #endif
 437   int file_index;
 438   djpeg_dest_ptr dest_mgr = NULL;
 439   FILE * input_file;
 440   FILE * output_file;
 441   JDIMENSION num_scanlines;
 442
 443   /* On Mac, fetch a command line. */
 444 #ifdef USE_CCOMMAND
 445   argc = ccommand(&argv);
 446 #endif
 447
 448   progname = argv[0];
 449   if (progname == NULL || progname[0] == 0)
 450     progname = "djpeg";         /* in case C library doesn't provide it */
 451
 452   /* Initialize the JPEG decompression object with default error handling. */
 453   cinfo.err = jpeg_std_error(&jerr);
 454   jpeg_create_decompress(&cinfo);
 455   /* Add some application-specific error messages (from cderror.h) */
 456   jerr.addon_message_table = cdjpeg_message_table;
 457   jerr.first_addon_message = JMSG_FIRSTADDONCODE;
 458   jerr.last_addon_message = JMSG_LASTADDONCODE;
 459
 460   /* Insert custom marker processor for COM and APP12.
 461    * APP12 is used by some digital camera makers for textual info,
 462    * so we provide the ability to display it as text.
 463    * If you like, additional APPn marker types can be selected for display,
 464    * but don't try to override APP0 or APP14 this way (see libjpeg.doc).
 465    */
 466   jpeg_set_marker_processor(&cinfo, JPEG_COM, print_text_marker);
 467   jpeg_set_marker_processor(&cinfo, JPEG_APP0+12, print_text_marker);
 468
 469   /* Now safe to enable signal catcher. */
 470 #ifdef NEED_SIGNAL_CATCHER
 471   enable_signal_catcher((j_common_ptr) &cinfo);
 472 #endif
 473
 474   /* Scan command line to find file names. */
 475   /* It is convenient to use just one switch-parsing routine, but the switch
 476    * values read here are ignored; we will rescan the switches after opening
 477    * the input file.
 478    * (Exception: tracing level set here controls verbosity for COM markers
 479    * found during jpeg_read_header...)
 480    */
 481
 482   file_index = parse_switches(&cinfo, argc, argv, 0, FALSE);
 483
 484 #ifdef TWO_FILE_COMMANDLINE
 485   /* Must have either -outfile switch or explicit output file name */
 486   if (outfilename == NULL) {
 487     if (file_index != argc-2) {
 488       fprintf(stderr, "%s: must name one input and one output file\n",
 489               progname);
 490       usage();
 491     }
 492     outfilename = argv[file_index+1];
 493   } else {
 494     if (file_index != argc-1) {
 495       fprintf(stderr, "%s: must name one input and one output file\n",
 496               progname);
 497       usage();
 498     }
 499   }
 500 #else
 501   /* Unix style: expect zero or one file name */
 502   if (file_index < argc-1) {
 503     fprintf(stderr, "%s: only one input file\n", progname);
 504     usage();
 505   }
 506 #endif /* TWO_FILE_COMMANDLINE */
 507
 508   /* Open the input file. */
 509   if (file_index < argc) {
 510     if ((input_file = fopen(argv[file_index], READ_BINARY)) == NULL) {
 511       fprintf(stderr, "%s: can't open %s\n", progname, argv[file_index]);
 512       exit(EXIT_FAILURE);
 513     }
 514   } else {
 515     /* default input file is stdin */
 516     input_file = read_stdin();
 517   }
 518
 519   /* Open the output file. */
 520   if (outfilename != NULL) {
 521     if ((output_file = fopen(outfilename, WRITE_BINARY)) == NULL) {
 522       fprintf(stderr, "%s: can't open %s\n", progname, outfilename);
 523       exit(EXIT_FAILURE);
 524     }
 525   } else {
 526     /* default output file is stdout */
 527     output_file = write_stdout();
 528   }
 529
 530 #ifdef PROGRESS_REPORT
 531   start_progress_monitor((j_common_ptr) &cinfo, &progress);
 532 #endif
 533
 534   /* Specify data source for decompression */
 535   jpeg_stdio_src(&cinfo, input_file);
 536
 537   /* Read file header, set default decompression parameters */
 538   (void) jpeg_read_header(&cinfo, TRUE);
 539
 540   /* Adjust default decompression parameters by re-parsing the options */
 541   file_index = parse_switches(&cinfo, argc, argv, 0, TRUE);
 542
 543   /* Initialize the output module now to let it override any crucial
 544    * option settings (for instance, GIF wants to force color quantization).
 545    */
 546   switch (requested_fmt) {
 547 #ifdef BMP_SUPPORTED
 548   case FMT_BMP:
 549     dest_mgr = jinit_write_bmp(&cinfo, FALSE);
 550     break;
 551   case FMT_OS2:
 552     dest_mgr = jinit_write_bmp(&cinfo, TRUE);
 553     break;
 554 #endif
 555 #ifdef GIF_SUPPORTED
 556   case FMT_GIF:
 557     dest_mgr = jinit_write_gif(&cinfo);
 558     break;
 559 #endif
 560 #ifdef PPM_SUPPORTED
 561   case FMT_PPM:
 562     dest_mgr = jinit_write_ppm(&cinfo);
 563     break;
 564 #endif
 565 #ifdef RLE_SUPPORTED
 566   case FMT_RLE:
 567     dest_mgr = jinit_write_rle(&cinfo);
 568     break;
 569 #endif
 570 #ifdef TARGA_SUPPORTED
 571   case FMT_TARGA:
 572     dest_mgr = jinit_write_targa(&cinfo);
 573     break;
 574 #endif
 575   default:
 576     ERREXIT(&cinfo, JERR_UNSUPPORTED_FORMAT);
 577     break;
 578   }
 579   dest_mgr->output_file = output_file;
 580
 581   /* Start decompressor */
 582   (void) jpeg_start_decompress(&cinfo);
 583
 584   /* Write output file header */
 585   (*dest_mgr->start_output) (&cinfo, dest_mgr);
 586
 587   /* Process data */
 588   while (cinfo.output_scanline < cinfo.output_height) {
 589     num_scanlines = jpeg_read_scanlines(&cinfo, dest_mgr->buffer,
 590                                         dest_mgr->buffer_height);
 591     (*dest_mgr->put_pixel_rows) (&cinfo, dest_mgr, num_scanlines);
 592   }
 593
 594 #ifdef PROGRESS_REPORT
 595   /* Hack: count final pass as done in case finish_output does an extra pass.
 596    * The library won't have updated completed_passes.
 597    */
 598   progress.pub.completed_passes = progress.pub.total_passes;
 599 #endif
 600
 601   /* Finish decompression and release memory.
 602    * I must do it in this order because output module has allocated memory
 603    * of lifespan JPOOL_IMAGE; it needs to finish before releasing memory.
 604    */
 605   (*dest_mgr->finish_output) (&cinfo, dest_mgr);
 606   (void) jpeg_finish_decompress(&cinfo);
 607   jpeg_destroy_decompress(&cinfo);
 608
 609   /* Close files, if we opened them */
 610   if (input_file != stdin)
 611     fclose(input_file);
 612   if (output_file != stdout)
 613     fclose(output_file);
 614
 615 #ifdef PROGRESS_REPORT
 616   end_progress_monitor((j_common_ptr) &cinfo);
 617 #endif
 618
 619   /* All done. */
 620   exit(jerr.num_warnings ? EXIT_WARNING : EXIT_SUCCESS);
 621   return 0;                     /* suppress no-return-value warnings */
 622 }