Real-time collaboration for Jupyter Notebooks, Linux Terminals, LaTeX, VS Code, R IDE, and more,
all in one place.

1
/*
2
 * djpeg.c
3
 *
4
 * Copyright (C) 1991-1997, Thomas G. Lane.
5
 * This file is part of the Independent JPEG Group's software.
6
 * For conditions of distribution and use, see the accompanying README file.
7
 *
8
 * This file contains a command-line user interface for the JPEG decompressor.
9
 * It should work on any system with Unix- or MS-DOS-style command lines.
10
 *
11
 * Two different command line styles are permitted, depending on the
12
 * compile-time switch TWO_FILE_COMMANDLINE:
13
 *	djpeg [options]  inputfile outputfile
14
 *	djpeg [options]  [inputfile]
15
 * In the second style, output is always to standard output, which you'd
16
 * normally redirect to a file or pipe to some other program.  Input is
17
 * either from a named file or from standard input (typically redirected).
18
 * The second style is convenient on Unix but is unhelpful on systems that
19
 * don't support pipes.  Also, you MUST use the first style if your system
20
 * doesn't do binary I/O to stdin/stdout.
21
 * To simplify script writing, the "-outfile" switch is provided.  The syntax
22
 *	djpeg [options]  -outfile outputfile  inputfile
23
 * works regardless of which command line style is used.
24
 */
25

26
#include "cdjpeg.h"		/* Common decls for cjpeg/djpeg applications */
27
#include "jversion.h"		/* for version message */
28

29
#include <ctype.h>		/* to declare isprint() */
30

31
#ifdef USE_CCOMMAND		/* command-line reader for Macintosh */
32
#ifdef __MWERKS__
33
#include <SIOUX.h>              /* Metrowerks needs this */
34
#include <console.h>		/* ... and this */
35
#endif
36
#ifdef THINK_C
37
#include <console.h>		/* Think declares it here */
38
#endif
39
#endif
40

41

42
/* Create the add-on message string table. */
43

44
#define JMESSAGE(code,string)	string ,
45

46
static const char * const cdjpeg_message_table[] = {
47
#include "cderror.h"
48
  NULL
49
};
50

51

52
/*
53
 * This list defines the known output image formats
54
 * (not all of which need be supported by a given version).
55
 * You can change the default output format by defining DEFAULT_FMT;
56
 * indeed, you had better do so if you undefine PPM_SUPPORTED.
57
 */
58

59
typedef enum {
60
	FMT_BMP,		/* BMP format (Windows flavor) */
61
	FMT_GIF,		/* GIF format */
62
	FMT_OS2,		/* BMP format (OS/2 flavor) */
63
	FMT_PPM,		/* PPM/PGM (PBMPLUS formats) */
64
	FMT_RLE,		/* RLE format */
65
	FMT_TARGA,		/* Targa format */
66
	FMT_TIFF		/* TIFF format */
67
} IMAGE_FORMATS;
68

69
#ifndef DEFAULT_FMT		/* so can override from CFLAGS in Makefile */
70
#define DEFAULT_FMT	FMT_PPM
71
#endif
72

73
static IMAGE_FORMATS requested_fmt;
74

75

76
/*
77
 * Argument-parsing code.
78
 * The switch parser is designed to be useful with DOS-style command line
79
 * syntax, ie, intermixed switches and file names, where only the switches
80
 * to the left of a given file name affect processing of that file.
81
 * The main program in this file doesn't actually use this capability...
82
 */
83

84

85
static const char * progname;	/* program name for error messages */
86
static char * outfilename;	/* for -outfile switch */
87

88

89
LOCAL(void)
90
usage (void)
91
/* complain about bad command line */
92
{
93
  fprintf(stderr, "usage: %s [switches] ", progname);
94
#ifdef TWO_FILE_COMMANDLINE
95
  fprintf(stderr, "inputfile outputfile\n");
96
#else
97
  fprintf(stderr, "[inputfile]\n");
98
#endif
99

100
  fprintf(stderr, "Switches (names may be abbreviated):\n");
101
  fprintf(stderr, "  -colors N      Reduce image to no more than N colors\n");
102
  fprintf(stderr, "  -fast          Fast, low-quality processing\n");
103
  fprintf(stderr, "  -grayscale     Force grayscale output\n");
104
#ifdef IDCT_SCALING_SUPPORTED
105
  fprintf(stderr, "  -scale M/N     Scale output image by fraction M/N, eg, 1/8\n");
106
#endif
107
#ifdef BMP_SUPPORTED
108
  fprintf(stderr, "  -bmp           Select BMP output format (Windows style)%s\n",
109
	  (DEFAULT_FMT == FMT_BMP ? " (default)" : ""));
110
#endif
111
#ifdef GIF_SUPPORTED
112
  fprintf(stderr, "  -gif           Select GIF output format%s\n",
113
	  (DEFAULT_FMT == FMT_GIF ? " (default)" : ""));
114
#endif
115
#ifdef BMP_SUPPORTED
116
  fprintf(stderr, "  -os2           Select BMP output format (OS/2 style)%s\n",
117
	  (DEFAULT_FMT == FMT_OS2 ? " (default)" : ""));
118
#endif
119
#ifdef PPM_SUPPORTED
120
  fprintf(stderr, "  -pnm           Select PBMPLUS (PPM/PGM) output format%s\n",
121
	  (DEFAULT_FMT == FMT_PPM ? " (default)" : ""));
122
#endif
123
#ifdef RLE_SUPPORTED
124
  fprintf(stderr, "  -rle           Select Utah RLE output format%s\n",
125
	  (DEFAULT_FMT == FMT_RLE ? " (default)" : ""));
126
#endif
127
#ifdef TARGA_SUPPORTED
128
  fprintf(stderr, "  -targa         Select Targa output format%s\n",
129
	  (DEFAULT_FMT == FMT_TARGA ? " (default)" : ""));
130
#endif
131
  fprintf(stderr, "Switches for advanced users:\n");
132
#ifdef DCT_ISLOW_SUPPORTED
133
  fprintf(stderr, "  -dct int       Use integer DCT method%s\n",
134
	  (JDCT_DEFAULT == JDCT_ISLOW ? " (default)" : ""));
135
#endif
136
#ifdef DCT_IFAST_SUPPORTED
137
  fprintf(stderr, "  -dct fast      Use fast integer DCT (less accurate)%s\n",
138
	  (JDCT_DEFAULT == JDCT_IFAST ? " (default)" : ""));
139
#endif
140
#ifdef DCT_FLOAT_SUPPORTED
141
  fprintf(stderr, "  -dct float     Use floating-point DCT method%s\n",
142
	  (JDCT_DEFAULT == JDCT_FLOAT ? " (default)" : ""));
143
#endif
144
  fprintf(stderr, "  -dither fs     Use F-S dithering (default)\n");
145
  fprintf(stderr, "  -dither none   Don't use dithering in quantization\n");
146
  fprintf(stderr, "  -dither ordered  Use ordered dither (medium speed, quality)\n");
147
#ifdef QUANT_2PASS_SUPPORTED
148
  fprintf(stderr, "  -map FILE      Map to colors used in named image file\n");
149
#endif
150
  fprintf(stderr, "  -nosmooth      Don't use high-quality upsampling\n");
151
#ifdef QUANT_1PASS_SUPPORTED
152
  fprintf(stderr, "  -onepass       Use 1-pass quantization (fast, low quality)\n");
153
#endif
154
  fprintf(stderr, "  -maxmemory N   Maximum memory to use (in kbytes)\n");
155
  fprintf(stderr, "  -outfile name  Specify name for output file\n");
156
  fprintf(stderr, "  -verbose  or  -debug   Emit debug output\n");
157
  exit(EXIT_FAILURE);
158
}
159

160

161
LOCAL(int)
162
parse_switches (j_decompress_ptr cinfo, int argc, char **argv,
163
		int last_file_arg_seen, boolean for_real)
164
/* Parse optional switches.
165
 * Returns argv[] index of first file-name argument (== argc if none).
166
 * Any file names with indexes <= last_file_arg_seen are ignored;
167
 * they have presumably been processed in a previous iteration.
168
 * (Pass 0 for last_file_arg_seen on the first or only iteration.)
169
 * for_real is FALSE on the first (dummy) pass; we may skip any expensive
170
 * processing.
171
 */
172
{
173
  int argn;
174
  char * arg;
175

176
  /* Set up default JPEG parameters. */
177
  requested_fmt = DEFAULT_FMT;	/* set default output file format */
178
  outfilename = NULL;
179
  cinfo->err->trace_level = 0;
180

181
  /* Scan command line options, adjust parameters */
182

183
  for (argn = 1; argn < argc; argn++) {
184
    arg = argv[argn];
185
    if (*arg != '-') {
186
      /* Not a switch, must be a file name argument */
187
      if (argn <= last_file_arg_seen) {
188
	outfilename = NULL;	/* -outfile applies to just one input file */
189
	continue;		/* ignore this name if previously processed */
190
      }
191
      break;			/* else done parsing switches */
192
    }
193
    arg++;			/* advance past switch marker character */
194

195
    if (keymatch(arg, "bmp", 1)) {
196
      /* BMP output format. */
197
      requested_fmt = FMT_BMP;
198

199
    } else if (keymatch(arg, "colors", 1) || keymatch(arg, "colours", 1) ||
200
	       keymatch(arg, "quantize", 1) || keymatch(arg, "quantise", 1)) {
201
      /* Do color quantization. */
202
      int val;
203

204
      if (++argn >= argc)	/* advance to next argument */
205
	usage();
206
      if (sscanf(argv[argn], "%d", &val) != 1)
207
	usage();
208
      cinfo->desired_number_of_colors = val;
209
      cinfo->quantize_colors = TRUE;
210

211
    } else if (keymatch(arg, "dct", 2)) {
212
      /* Select IDCT algorithm. */
213
      if (++argn >= argc)	/* advance to next argument */
214
	usage();
215
      if (keymatch(argv[argn], "int", 1)) {
216
	cinfo->dct_method = JDCT_ISLOW;
217
      } else if (keymatch(argv[argn], "fast", 2)) {
218
	cinfo->dct_method = JDCT_IFAST;
219
      } else if (keymatch(argv[argn], "float", 2)) {
220
	cinfo->dct_method = JDCT_FLOAT;
221
      } else
222
	usage();
223

224
    } else if (keymatch(arg, "dither", 2)) {
225
      /* Select dithering algorithm. */
226
      if (++argn >= argc)	/* advance to next argument */
227
	usage();
228
      if (keymatch(argv[argn], "fs", 2)) {
229
	cinfo->dither_mode = JDITHER_FS;
230
      } else if (keymatch(argv[argn], "none", 2)) {
231
	cinfo->dither_mode = JDITHER_NONE;
232
      } else if (keymatch(argv[argn], "ordered", 2)) {
233
	cinfo->dither_mode = JDITHER_ORDERED;
234
      } else
235
	usage();
236

237
    } else if (keymatch(arg, "debug", 1) || keymatch(arg, "verbose", 1)) {
238
      /* Enable debug printouts. */
239
      /* On first -d, print version identification */
240
      static boolean printed_version = FALSE;
241

242
      if (! printed_version) {
243
	fprintf(stderr, "Independent JPEG Group's DJPEG, version %s\n%s\n",
244
		JVERSION, JCOPYRIGHT);
245
	printed_version = TRUE;
246
      }
247
      cinfo->err->trace_level++;
248

249
    } else if (keymatch(arg, "fast", 1)) {
250
      /* Select recommended processing options for quick-and-dirty output. */
251
      cinfo->two_pass_quantize = FALSE;
252
      cinfo->dither_mode = JDITHER_ORDERED;
253
      if (! cinfo->quantize_colors) /* don't override an earlier -colors */
254
	cinfo->desired_number_of_colors = 216;
255
      cinfo->dct_method = JDCT_FASTEST;
256
      cinfo->do_fancy_upsampling = FALSE;
257

258
    } else if (keymatch(arg, "gif", 1)) {
259
      /* GIF output format. */
260
      requested_fmt = FMT_GIF;
261

262
    } else if (keymatch(arg, "grayscale", 2) || keymatch(arg, "greyscale",2)) {
263
      /* Force monochrome output. */
264
      cinfo->out_color_space = JCS_GRAYSCALE;
265

266
    } else if (keymatch(arg, "map", 3)) {
267
      /* Quantize to a color map taken from an input file. */
268
      if (++argn >= argc)	/* advance to next argument */
269
	usage();
270
      if (for_real) {		/* too expensive to do twice! */
271
#ifdef QUANT_2PASS_SUPPORTED	/* otherwise can't quantize to supplied map */
272
	FILE * mapfile;
273

274
	if ((mapfile = fopen(argv[argn], READ_BINARY)) == NULL) {
275
	  fprintf(stderr, "%s: can't open %s\n", progname, argv[argn]);
276
	  exit(EXIT_FAILURE);
277
	}
278
	read_color_map(cinfo, mapfile);
279
	fclose(mapfile);
280
	cinfo->quantize_colors = TRUE;
281
#else
282
	ERREXIT(cinfo, JERR_NOT_COMPILED);
283
#endif
284
      }
285

286
    } else if (keymatch(arg, "maxmemory", 3)) {
287
      /* Maximum memory in Kb (or Mb with 'm'). */
288
      long lval;
289
      char ch = 'x';
290

291
      if (++argn >= argc)	/* advance to next argument */
292
	usage();
293
      if (sscanf(argv[argn], "%ld%c", &lval, &ch) < 1)
294
	usage();
295
      if (ch == 'm' || ch == 'M')
296
	lval *= 1000L;
297
      cinfo->mem->max_memory_to_use = lval * 1000L;
298

299
    } else if (keymatch(arg, "nosmooth", 3)) {
300
      /* Suppress fancy upsampling */
301
      cinfo->do_fancy_upsampling = FALSE;
302

303
    } else if (keymatch(arg, "onepass", 3)) {
304
      /* Use fast one-pass quantization. */
305
      cinfo->two_pass_quantize = FALSE;
306

307
    } else if (keymatch(arg, "os2", 3)) {
308
      /* BMP output format (OS/2 flavor). */
309
      requested_fmt = FMT_OS2;
310

311
    } else if (keymatch(arg, "outfile", 4)) {
312
      /* Set output file name. */
313
      if (++argn >= argc)	/* advance to next argument */
314
	usage();
315
      outfilename = argv[argn];	/* save it away for later use */
316

317
    } else if (keymatch(arg, "pnm", 1) || keymatch(arg, "ppm", 1)) {
318
      /* PPM/PGM output format. */
319
      requested_fmt = FMT_PPM;
320

321
    } else if (keymatch(arg, "rle", 1)) {
322
      /* RLE output format. */
323
      requested_fmt = FMT_RLE;
324

325
    } else if (keymatch(arg, "scale", 1)) {
326
      /* Scale the output image by a fraction M/N. */
327
      if (++argn >= argc)	/* advance to next argument */
328
	usage();
329
      if (sscanf(argv[argn], "%d/%d",
330
		 &cinfo->scale_num, &cinfo->scale_denom) != 2)
331
	usage();
332

333
    } else if (keymatch(arg, "targa", 1)) {
334
      /* Targa output format. */
335
      requested_fmt = FMT_TARGA;
336

337
    } else {
338
      usage();			/* bogus switch */
339
    }
340
  }
341

342
  return argn;			/* return index of next arg (file name) */
343
}
344

345

346
/*
347
 * Marker processor for COM and interesting APPn markers.
348
 * This replaces the library's built-in processor, which just skips the marker.
349
 * We want to print out the marker as text, to the extent possible.
350
 * Note this code relies on a non-suspending data source.
351
 */
352

353
LOCAL(unsigned int)
354
jpeg_getc (j_decompress_ptr cinfo)
355
/* Read next byte */
356
{
357
  struct jpeg_source_mgr * datasrc = cinfo->src;
358

359
  if (datasrc->bytes_in_buffer == 0) {
360
    if (! (*datasrc->fill_input_buffer) (cinfo))
361
      ERREXIT(cinfo, JERR_CANT_SUSPEND);
362
  }
363
  datasrc->bytes_in_buffer--;
364
  return GETJOCTET(*datasrc->next_input_byte++);
365
}
366

367

368
METHODDEF(boolean)
369
print_text_marker (j_decompress_ptr cinfo)
370
{
371
  boolean traceit = (cinfo->err->trace_level >= 1);
372
  INT32 length;
373
  unsigned int ch;
374
  unsigned int lastch = 0;
375

376
  length = jpeg_getc(cinfo) << 8;
377
  length += jpeg_getc(cinfo);
378
  length -= 2;			/* discount the length word itself */
379

380
  if (traceit) {
381
    if (cinfo->unread_marker == JPEG_COM)
382
      fprintf(stderr, "Comment, length %ld:\n", (long) length);
383
    else			/* assume it is an APPn otherwise */
384
      fprintf(stderr, "APP%d, length %ld:\n",
385
	      cinfo->unread_marker - JPEG_APP0, (long) length);
386
  }
387

388
  while (--length >= 0) {
389
    ch = jpeg_getc(cinfo);
390
    if (traceit) {
391
      /* Emit the character in a readable form.
392
       * Nonprintables are converted to \nnn form,
393
       * while \ is converted to \\.
394
       * Newlines in CR, CR/LF, or LF form will be printed as one newline.
395
       */
396
      if (ch == '\r') {
397
	fprintf(stderr, "\n");
398
      } else if (ch == '\n') {
399
	if (lastch != '\r')
400
	  fprintf(stderr, "\n");
401
      } else if (ch == '\\') {
402
	fprintf(stderr, "\\\\");
403
      } else if (isprint(ch)) {
404
	putc(ch, stderr);
405
      } else {
406
	fprintf(stderr, "\\%03o", ch);
407
      }
408
      lastch = ch;
409
    }
410
  }
411

412
  if (traceit)
413
    fprintf(stderr, "\n");
414

415
  return TRUE;
416
}
417

418

419
/*
420
 * The main program.
421
 */
422

423
int
424
main (int argc, char **argv)
425
{
426
  struct jpeg_decompress_struct cinfo;
427
  struct jpeg_error_mgr jerr;
428
#ifdef PROGRESS_REPORT
429
  struct cdjpeg_progress_mgr progress;
430
#endif
431
  int file_index;
432
  djpeg_dest_ptr dest_mgr = NULL;
433
  FILE * input_file;
434
  FILE * output_file;
435
  JDIMENSION num_scanlines;
436

437
  /* On Mac, fetch a command line. */
438
#ifdef USE_CCOMMAND
439
  argc = ccommand(&argv);
440
#endif
441

442
  progname = argv[0];
443
  if (progname == NULL || progname[0] == 0)
444
    progname = "djpeg";		/* in case C library doesn't provide it */
445

446
  /* Initialize the JPEG decompression object with default error handling. */
447
  cinfo.err = jpeg_std_error(&jerr);
448
  jpeg_create_decompress(&cinfo);
449
  /* Add some application-specific error messages (from cderror.h) */
450
  jerr.addon_message_table = cdjpeg_message_table;
451
  jerr.first_addon_message = JMSG_FIRSTADDONCODE;
452
  jerr.last_addon_message = JMSG_LASTADDONCODE;
453

454
  /* Insert custom marker processor for COM and APP12.
455
   * APP12 is used by some digital camera makers for textual info,
456
   * so we provide the ability to display it as text.
457
   * If you like, additional APPn marker types can be selected for display,
458
   * but don't try to override APP0 or APP14 this way (see libjpeg.doc).
459
   */
460
  jpeg_set_marker_processor(&cinfo, JPEG_COM, print_text_marker);
461
  jpeg_set_marker_processor(&cinfo, JPEG_APP0+12, print_text_marker);
462

463
  /* Now safe to enable signal catcher. */
464
#ifdef NEED_SIGNAL_CATCHER
465
  enable_signal_catcher((j_common_ptr) &cinfo);
466
#endif
467

468
  /* Scan command line to find file names. */
469
  /* It is convenient to use just one switch-parsing routine, but the switch
470
   * values read here are ignored; we will rescan the switches after opening
471
   * the input file.
472
   * (Exception: tracing level set here controls verbosity for COM markers
473
   * found during jpeg_read_header...)
474
   */
475

476
  file_index = parse_switches(&cinfo, argc, argv, 0, FALSE);
477

478
#ifdef TWO_FILE_COMMANDLINE
479
  /* Must have either -outfile switch or explicit output file name */
480
  if (outfilename == NULL) {
481
    if (file_index != argc-2) {
482
      fprintf(stderr, "%s: must name one input and one output file\n",
483
	      progname);
484
      usage();
485
    }
486
    outfilename = argv[file_index+1];
487
  } else {
488
    if (file_index != argc-1) {
489
      fprintf(stderr, "%s: must name one input and one output file\n",
490
	      progname);
491
      usage();
492
    }
493
  }
494
#else
495
  /* Unix style: expect zero or one file name */
496
  if (file_index < argc-1) {
497
    fprintf(stderr, "%s: only one input file\n", progname);
498
    usage();
499
  }
500
#endif /* TWO_FILE_COMMANDLINE */
501

502
  /* Open the input file. */
503
  if (file_index < argc) {
504
    if ((input_file = fopen(argv[file_index], READ_BINARY)) == NULL) {
505
      fprintf(stderr, "%s: can't open %s\n", progname, argv[file_index]);
506
      exit(EXIT_FAILURE);
507
    }
508
  } else {
509
    /* default input file is stdin */
510
    input_file = read_stdin();
511
  }
512

513
  /* Open the output file. */
514
  if (outfilename != NULL) {
515
    if ((output_file = fopen(outfilename, WRITE_BINARY)) == NULL) {
516
      fprintf(stderr, "%s: can't open %s\n", progname, outfilename);
517
      exit(EXIT_FAILURE);
518
    }
519
  } else {
520
    /* default output file is stdout */
521
    output_file = write_stdout();
522
  }
523

524
#ifdef PROGRESS_REPORT
525
  start_progress_monitor((j_common_ptr) &cinfo, &progress);
526
#endif
527

528
  /* Specify data source for decompression */
529
  jpeg_stdio_src(&cinfo, input_file);
530

531
  /* Read file header, set default decompression parameters */
532
  (void) jpeg_read_header(&cinfo, TRUE);
533

534
  /* Adjust default decompression parameters by re-parsing the options */
535
  file_index = parse_switches(&cinfo, argc, argv, 0, TRUE);
536

537
  /* Initialize the output module now to let it override any crucial
538
   * option settings (for instance, GIF wants to force color quantization).
539
   */
540
  switch (requested_fmt) {
541
#ifdef BMP_SUPPORTED
542
  case FMT_BMP:
543
    dest_mgr = jinit_write_bmp(&cinfo, FALSE);
544
    break;
545
  case FMT_OS2:
546
    dest_mgr = jinit_write_bmp(&cinfo, TRUE);
547
    break;
548
#endif
549
#ifdef GIF_SUPPORTED
550
  case FMT_GIF:
551
    dest_mgr = jinit_write_gif(&cinfo);
552
    break;
553
#endif
554
#ifdef PPM_SUPPORTED
555
  case FMT_PPM:
556
    dest_mgr = jinit_write_ppm(&cinfo);
557
    break;
558
#endif
559
#ifdef RLE_SUPPORTED
560
  case FMT_RLE:
561
    dest_mgr = jinit_write_rle(&cinfo);
562
    break;
563
#endif
564
#ifdef TARGA_SUPPORTED
565
  case FMT_TARGA:
566
    dest_mgr = jinit_write_targa(&cinfo);
567
    break;
568
#endif
569
  default:
570
    ERREXIT(&cinfo, JERR_UNSUPPORTED_FORMAT);
571
    break;
572
  }
573
  dest_mgr->output_file = output_file;
574

575
  /* Start decompressor */
576
  (void) jpeg_start_decompress(&cinfo);
577

578
  /* Write output file header */
579
  (*dest_mgr->start_output) (&cinfo, dest_mgr);
580

581
  /* Process data */
582
  while (cinfo.output_scanline < cinfo.output_height) {
583
    num_scanlines = jpeg_read_scanlines(&cinfo, dest_mgr->buffer,
584
					dest_mgr->buffer_height);
585
    (*dest_mgr->put_pixel_rows) (&cinfo, dest_mgr, num_scanlines);
586
  }
587

588
#ifdef PROGRESS_REPORT
589
  /* Hack: count final pass as done in case finish_output does an extra pass.
590
   * The library won't have updated completed_passes.
591
   */
592
  progress.pub.completed_passes = progress.pub.total_passes;
593
#endif
594

595
  /* Finish decompression and release memory.
596
   * I must do it in this order because output module has allocated memory
597
   * of lifespan JPOOL_IMAGE; it needs to finish before releasing memory.
598
   */
599
  (*dest_mgr->finish_output) (&cinfo, dest_mgr);
600
  (void) jpeg_finish_decompress(&cinfo);
601
  jpeg_destroy_decompress(&cinfo);
602

603
  /* Close files, if we opened them */
604
  if (input_file != stdin)
605
    fclose(input_file);
606
  if (output_file != stdout)
607
    fclose(output_file);
608

609
#ifdef PROGRESS_REPORT
610
  end_progress_monitor((j_common_ptr) &cinfo);
611
#endif
612

613
  /* All done. */
614
  exit(jerr.num_warnings ? EXIT_WARNING : EXIT_SUCCESS);
615
  return 0;			/* suppress no-return-value warnings */
616
}
617

618