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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4. The directory name has changed: no version number in the expanded directory now.
author Franz Glasner <fzglas.hg@dom66.de>
date Mon, 15 Sep 2025 11:43:07 +0200
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1:1d09e1dec1d9 2:b50eed0cc0ef
1 /*
2 * djpeg.c
3 *
4 * Copyright (C) 1991-1997, Thomas G. Lane.
5 * Modified 2009-2019 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 (LZW compressed) */
63 FMT_GIF0, /* GIF format (uncompressed) */
64 FMT_OS2, /* BMP format (OS/2 flavor) */
65 FMT_PPM, /* PPM/PGM (PBMPLUS formats) */
66 FMT_RLE, /* RLE format */
67 FMT_TARGA, /* Targa format */
68 FMT_TIFF /* TIFF format */
69 } IMAGE_FORMATS;
70
71 #ifndef DEFAULT_FMT /* so can override from CFLAGS in Makefile */
72 #define DEFAULT_FMT FMT_PPM
73 #endif
74
75 static IMAGE_FORMATS requested_fmt;
76
77
78 /*
79 * Argument-parsing code.
80 * The switch parser is designed to be useful with DOS-style command line
81 * syntax, ie, intermixed switches and file names, where only the switches
82 * to the left of a given file name affect processing of that file.
83 * The main program in this file doesn't actually use this capability...
84 */
85
86
87 static const char * progname; /* program name for error messages */
88 static char * outfilename; /* for -outfile switch */
89
90
91 LOCAL(void)
92 usage (void)
93 /* complain about bad command line */
94 {
95 fprintf(stderr, "usage: %s [switches] ", progname);
96 #ifdef TWO_FILE_COMMANDLINE
97 fprintf(stderr, "inputfile outputfile\n");
98 #else
99 fprintf(stderr, "[inputfile]\n");
100 #endif
101
102 fprintf(stderr, "Switches (names may be abbreviated):\n");
103 fprintf(stderr, " -colors N Reduce image to no more than N colors\n");
104 fprintf(stderr, " -fast Fast, low-quality processing\n");
105 fprintf(stderr, " -grayscale Force grayscale output\n");
106 fprintf(stderr, " -rgb Force RGB output\n");
107 #ifdef IDCT_SCALING_SUPPORTED
108 fprintf(stderr, " -scale M/N Scale output image by fraction M/N, eg, 1/8\n");
109 #endif
110 #ifdef BMP_SUPPORTED
111 fprintf(stderr, " -bmp Select BMP output format (Windows style)%s\n",
112 (DEFAULT_FMT == FMT_BMP ? " (default)" : ""));
113 #endif
114 #ifdef GIF_SUPPORTED
115 fprintf(stderr, " -gif Select GIF output format (LZW compressed)%s\n",
116 (DEFAULT_FMT == FMT_GIF ? " (default)" : ""));
117 fprintf(stderr, " -gif0 Select GIF output format (uncompressed)%s\n",
118 (DEFAULT_FMT == FMT_GIF0 ? " (default)" : ""));
119 #endif
120 #ifdef BMP_SUPPORTED
121 fprintf(stderr, " -os2 Select BMP output format (OS/2 style)%s\n",
122 (DEFAULT_FMT == FMT_OS2 ? " (default)" : ""));
123 #endif
124 #ifdef PPM_SUPPORTED
125 fprintf(stderr, " -pnm Select PBMPLUS (PPM/PGM) output format%s\n",
126 (DEFAULT_FMT == FMT_PPM ? " (default)" : ""));
127 #endif
128 #ifdef RLE_SUPPORTED
129 fprintf(stderr, " -rle Select Utah RLE output format%s\n",
130 (DEFAULT_FMT == FMT_RLE ? " (default)" : ""));
131 #endif
132 #ifdef TARGA_SUPPORTED
133 fprintf(stderr, " -targa Select Targa output format%s\n",
134 (DEFAULT_FMT == FMT_TARGA ? " (default)" : ""));
135 #endif
136 fprintf(stderr, "Switches for advanced users:\n");
137 #ifdef DCT_ISLOW_SUPPORTED
138 fprintf(stderr, " -dct int Use integer DCT method%s\n",
139 (JDCT_DEFAULT == JDCT_ISLOW ? " (default)" : ""));
140 #endif
141 #ifdef DCT_IFAST_SUPPORTED
142 fprintf(stderr, " -dct fast Use fast integer DCT (less accurate)%s\n",
143 (JDCT_DEFAULT == JDCT_IFAST ? " (default)" : ""));
144 #endif
145 #ifdef DCT_FLOAT_SUPPORTED
146 fprintf(stderr, " -dct float Use floating-point DCT method%s\n",
147 (JDCT_DEFAULT == JDCT_FLOAT ? " (default)" : ""));
148 #endif
149 fprintf(stderr, " -dither fs Use F-S dithering (default)\n");
150 fprintf(stderr, " -dither none Don't use dithering in quantization\n");
151 fprintf(stderr, " -dither ordered Use ordered dither (medium speed, quality)\n");
152 #ifdef QUANT_2PASS_SUPPORTED
153 fprintf(stderr, " -map FILE Map to colors used in named image file\n");
154 #endif
155 fprintf(stderr, " -nosmooth Don't use high-quality upsampling\n");
156 #ifdef QUANT_1PASS_SUPPORTED
157 fprintf(stderr, " -onepass Use 1-pass quantization (fast, low quality)\n");
158 #endif
159 fprintf(stderr, " -maxmemory N Maximum memory to use (in kbytes)\n");
160 fprintf(stderr, " -outfile name Specify name for output file\n");
161 fprintf(stderr, " -verbose or -debug Emit debug output\n");
162 exit(EXIT_FAILURE);
163 }
164
165
166 LOCAL(int)
167 parse_switches (j_decompress_ptr cinfo, int argc, char **argv,
168 int last_file_arg_seen, boolean for_real)
169 /* Parse optional switches.
170 * Returns argv[] index of first file-name argument (== argc if none).
171 * Any file names with indexes <= last_file_arg_seen are ignored;
172 * they have presumably been processed in a previous iteration.
173 * (Pass 0 for last_file_arg_seen on the first or only iteration.)
174 * for_real is FALSE on the first (dummy) pass; we may skip any expensive
175 * processing.
176 */
177 {
178 int argn;
179 char * arg;
180
181 /* Set up default JPEG parameters. */
182 requested_fmt = DEFAULT_FMT; /* set default output file format */
183 outfilename = NULL;
184 cinfo->err->trace_level = 0;
185
186 /* Scan command line options, adjust parameters */
187
188 for (argn = 1; argn < argc; argn++) {
189 arg = argv[argn];
190 if (*arg != '-') {
191 /* Not a switch, must be a file name argument */
192 if (argn <= last_file_arg_seen) {
193 outfilename = NULL; /* -outfile applies to just one input file */
194 continue; /* ignore this name if previously processed */
195 }
196 break; /* else done parsing switches */
197 }
198 arg++; /* advance past switch marker character */
199
200 if (keymatch(arg, "bmp", 1)) {
201 /* BMP output format (Windows flavor). */
202 requested_fmt = FMT_BMP;
203
204 } else if (keymatch(arg, "colors", 1) || keymatch(arg, "colours", 1) ||
205 keymatch(arg, "quantize", 1) || keymatch(arg, "quantise", 1)) {
206 /* Do color quantization. */
207 int val;
208
209 if (++argn >= argc) /* advance to next argument */
210 usage();
211 if (sscanf(argv[argn], "%d", &val) != 1)
212 usage();
213 cinfo->desired_number_of_colors = val;
214 cinfo->quantize_colors = TRUE;
215
216 } else if (keymatch(arg, "dct", 2)) {
217 /* Select IDCT algorithm. */
218 if (++argn >= argc) /* advance to next argument */
219 usage();
220 if (keymatch(argv[argn], "int", 1)) {
221 cinfo->dct_method = JDCT_ISLOW;
222 } else if (keymatch(argv[argn], "fast", 2)) {
223 cinfo->dct_method = JDCT_IFAST;
224 } else if (keymatch(argv[argn], "float", 2)) {
225 cinfo->dct_method = JDCT_FLOAT;
226 } else
227 usage();
228
229 } else if (keymatch(arg, "dither", 2)) {
230 /* Select dithering algorithm. */
231 if (++argn >= argc) /* advance to next argument */
232 usage();
233 if (keymatch(argv[argn], "fs", 2)) {
234 cinfo->dither_mode = JDITHER_FS;
235 } else if (keymatch(argv[argn], "none", 2)) {
236 cinfo->dither_mode = JDITHER_NONE;
237 } else if (keymatch(argv[argn], "ordered", 2)) {
238 cinfo->dither_mode = JDITHER_ORDERED;
239 } else
240 usage();
241
242 } else if (keymatch(arg, "debug", 1) || keymatch(arg, "verbose", 1)) {
243 /* Enable debug printouts. */
244 /* On first -d, print version identification */
245 static boolean printed_version = FALSE;
246
247 if (! printed_version) {
248 fprintf(stderr, "Independent JPEG Group's DJPEG, version %s\n%s\n",
249 JVERSION, JCOPYRIGHT);
250 printed_version = TRUE;
251 }
252 cinfo->err->trace_level++;
253
254 } else if (keymatch(arg, "fast", 1)) {
255 /* Select recommended processing options for quick-and-dirty output. */
256 cinfo->two_pass_quantize = FALSE;
257 cinfo->dither_mode = JDITHER_ORDERED;
258 if (! cinfo->quantize_colors) /* don't override an earlier -colors */
259 cinfo->desired_number_of_colors = 216;
260 cinfo->dct_method = JDCT_FASTEST;
261 cinfo->do_fancy_upsampling = FALSE;
262
263 } else if (keymatch(arg, "gif", 1)) {
264 /* GIF output format (LZW compressed). */
265 requested_fmt = FMT_GIF;
266
267 } else if (keymatch(arg, "gif0", 4)) {
268 /* GIF output format (uncompressed). */
269 requested_fmt = FMT_GIF0;
270
271 } else if (keymatch(arg, "grayscale", 2) || keymatch(arg, "greyscale",2)) {
272 /* Force monochrome output. */
273 cinfo->out_color_space = JCS_GRAYSCALE;
274
275 } else if (keymatch(arg, "rgb", 3)) {
276 /* Force RGB output. */
277 cinfo->out_color_space = JCS_RGB;
278
279 } else if (keymatch(arg, "map", 3)) {
280 /* Quantize to a color map taken from an input file. */
281 if (++argn >= argc) /* advance to next argument */
282 usage();
283 if (for_real) { /* too expensive to do twice! */
284 #ifdef QUANT_2PASS_SUPPORTED /* otherwise can't quantize to supplied map */
285 FILE * mapfile;
286
287 if ((mapfile = fopen(argv[argn], READ_BINARY)) == NULL) {
288 fprintf(stderr, "%s: can't open %s\n", progname, argv[argn]);
289 exit(EXIT_FAILURE);
290 }
291 read_color_map(cinfo, mapfile);
292 fclose(mapfile);
293 cinfo->quantize_colors = TRUE;
294 #else
295 ERREXIT(cinfo, JERR_NOT_COMPILED);
296 #endif
297 }
298
299 } else if (keymatch(arg, "maxmemory", 3)) {
300 /* Maximum memory in Kb (or Mb with 'm'). */
301 long lval;
302 char ch = 'x';
303
304 if (++argn >= argc) /* advance to next argument */
305 usage();
306 if (sscanf(argv[argn], "%ld%c", &lval, &ch) < 1)
307 usage();
308 if (ch == 'm' || ch == 'M')
309 lval *= 1000L;
310 cinfo->mem->max_memory_to_use = lval * 1000L;
311
312 } else if (keymatch(arg, "nosmooth", 3)) {
313 /* Suppress fancy upsampling. */
314 cinfo->do_fancy_upsampling = FALSE;
315
316 } else if (keymatch(arg, "onepass", 3)) {
317 /* Use fast one-pass quantization. */
318 cinfo->two_pass_quantize = FALSE;
319
320 } else if (keymatch(arg, "os2", 3)) {
321 /* BMP output format (OS/2 flavor). */
322 requested_fmt = FMT_OS2;
323
324 } else if (keymatch(arg, "outfile", 4)) {
325 /* Set output file name. */
326 if (++argn >= argc) /* advance to next argument */
327 usage();
328 outfilename = argv[argn]; /* save it away for later use */
329
330 } else if (keymatch(arg, "pnm", 1) || keymatch(arg, "ppm", 1)) {
331 /* PPM/PGM output format. */
332 requested_fmt = FMT_PPM;
333
334 } else if (keymatch(arg, "rle", 1)) {
335 /* RLE output format. */
336 requested_fmt = FMT_RLE;
337
338 } else if (keymatch(arg, "scale", 1)) {
339 /* Scale the output image by a fraction M/N. */
340 if (++argn >= argc) /* advance to next argument */
341 usage();
342 if (sscanf(argv[argn], "%u/%u",
343 &cinfo->scale_num, &cinfo->scale_denom) < 1)
344 usage();
345
346 } else if (keymatch(arg, "targa", 1)) {
347 /* Targa output format. */
348 requested_fmt = FMT_TARGA;
349
350 } else {
351 usage(); /* bogus switch */
352 }
353 }
354
355 return argn; /* return index of next arg (file name) */
356 }
357
358
359 /*
360 * Marker processor for COM and interesting APPn markers.
361 * This replaces the library's built-in processor, which just skips the marker.
362 * We want to print out the marker as text, to the extent possible.
363 * Note this code relies on a non-suspending data source.
364 */
365
366 LOCAL(unsigned int)
367 jpeg_getc (j_decompress_ptr cinfo)
368 /* Read next byte */
369 {
370 struct jpeg_source_mgr * datasrc = cinfo->src;
371
372 if (datasrc->bytes_in_buffer == 0) {
373 if (! (*datasrc->fill_input_buffer) (cinfo))
374 ERREXIT(cinfo, JERR_CANT_SUSPEND);
375 }
376 datasrc->bytes_in_buffer--;
377 return GETJOCTET(*datasrc->next_input_byte++);
378 }
379
380
381 METHODDEF(boolean)
382 print_text_marker (j_decompress_ptr cinfo)
383 {
384 boolean traceit = (cinfo->err->trace_level >= 1);
385 INT32 length;
386 unsigned int ch;
387 unsigned int lastch = 0;
388
389 length = jpeg_getc(cinfo) << 8;
390 length += jpeg_getc(cinfo);
391 length -= 2; /* discount the length word itself */
392
393 if (traceit) {
394 if (cinfo->unread_marker == JPEG_COM)
395 fprintf(stderr, "Comment, length %ld:\n", (long) length);
396 else /* assume it is an APPn otherwise */
397 fprintf(stderr, "APP%d, length %ld:\n",
398 cinfo->unread_marker - JPEG_APP0, (long) length);
399 }
400
401 while (--length >= 0) {
402 ch = jpeg_getc(cinfo);
403 if (traceit) {
404 /* Emit the character in a readable form.
405 * Nonprintables are converted to \nnn form,
406 * while \ is converted to \\.
407 * Newlines in CR, CR/LF, or LF form will be printed as one newline.
408 */
409 if (ch == '\r') {
410 fprintf(stderr, "\n");
411 } else if (ch == '\n') {
412 if (lastch != '\r')
413 fprintf(stderr, "\n");
414 } else if (ch == '\\') {
415 fprintf(stderr, "\\\\");
416 } else if (isprint(ch)) {
417 putc(ch, stderr);
418 } else {
419 fprintf(stderr, "\\%03o", ch);
420 }
421 lastch = ch;
422 }
423 }
424
425 if (traceit)
426 fprintf(stderr, "\n");
427
428 return TRUE;
429 }
430
431
432 /*
433 * The main program.
434 */
435
436 int
437 main (int argc, char **argv)
438 {
439 struct jpeg_decompress_struct cinfo;
440 struct jpeg_error_mgr jerr;
441 #ifdef PROGRESS_REPORT
442 struct cdjpeg_progress_mgr progress;
443 #endif
444 int file_index;
445 djpeg_dest_ptr dest_mgr = NULL;
446 FILE * input_file;
447 FILE * output_file;
448 JDIMENSION num_scanlines;
449
450 /* On Mac, fetch a command line. */
451 #ifdef USE_CCOMMAND
452 argc = ccommand(&argv);
453 #endif
454
455 progname = argv[0];
456 if (progname == NULL || progname[0] == 0)
457 progname = "djpeg"; /* in case C library doesn't provide it */
458
459 /* Initialize the JPEG decompression object with default error handling. */
460 cinfo.err = jpeg_std_error(&jerr);
461 jpeg_create_decompress(&cinfo);
462 /* Add some application-specific error messages (from cderror.h) */
463 jerr.addon_message_table = cdjpeg_message_table;
464 jerr.first_addon_message = JMSG_FIRSTADDONCODE;
465 jerr.last_addon_message = JMSG_LASTADDONCODE;
466
467 /* Insert custom marker processor for COM and APP12.
468 * APP12 is used by some digital camera makers for textual info,
469 * so we provide the ability to display it as text.
470 * If you like, additional APPn marker types can be selected for display,
471 * but don't try to override APP0 or APP14 this way (see libjpeg.txt).
472 */
473 jpeg_set_marker_processor(&cinfo, JPEG_COM, print_text_marker);
474 jpeg_set_marker_processor(&cinfo, JPEG_APP0+12, print_text_marker);
475
476 /* Now safe to enable signal catcher. */
477 #ifdef NEED_SIGNAL_CATCHER
478 enable_signal_catcher((j_common_ptr) &cinfo);
479 #endif
480
481 /* Scan command line to find file names. */
482 /* It is convenient to use just one switch-parsing routine, but the switch
483 * values read here are ignored; we will rescan the switches after opening
484 * the input file.
485 * (Exception: tracing level set here controls verbosity for COM markers
486 * found during jpeg_read_header...)
487 */
488
489 file_index = parse_switches(&cinfo, argc, argv, 0, FALSE);
490
491 #ifdef TWO_FILE_COMMANDLINE
492 /* Must have either -outfile switch or explicit output file name */
493 if (outfilename == NULL) {
494 if (file_index != argc-2) {
495 fprintf(stderr, "%s: must name one input and one output file\n",
496 progname);
497 usage();
498 }
499 outfilename = argv[file_index+1];
500 } else {
501 if (file_index != argc-1) {
502 fprintf(stderr, "%s: must name one input and one output file\n",
503 progname);
504 usage();
505 }
506 }
507 #else
508 /* Unix style: expect zero or one file name */
509 if (file_index < argc-1) {
510 fprintf(stderr, "%s: only one input file\n", progname);
511 usage();
512 }
513 #endif /* TWO_FILE_COMMANDLINE */
514
515 /* Open the input file. */
516 if (file_index < argc) {
517 if ((input_file = fopen(argv[file_index], READ_BINARY)) == NULL) {
518 fprintf(stderr, "%s: can't open %s\n", progname, argv[file_index]);
519 exit(EXIT_FAILURE);
520 }
521 } else {
522 /* default input file is stdin */
523 input_file = read_stdin();
524 }
525
526 /* Open the output file. */
527 if (outfilename != NULL) {
528 if ((output_file = fopen(outfilename, WRITE_BINARY)) == NULL) {
529 fprintf(stderr, "%s: can't open %s\n", progname, outfilename);
530 exit(EXIT_FAILURE);
531 }
532 } else {
533 /* default output file is stdout */
534 output_file = write_stdout();
535 }
536
537 #ifdef PROGRESS_REPORT
538 start_progress_monitor((j_common_ptr) &cinfo, &progress);
539 #endif
540
541 /* Specify data source for decompression */
542 jpeg_stdio_src(&cinfo, input_file);
543
544 /* Read file header, set default decompression parameters */
545 (void) jpeg_read_header(&cinfo, TRUE);
546
547 /* Adjust default decompression parameters by re-parsing the options */
548 file_index = parse_switches(&cinfo, argc, argv, 0, TRUE);
549
550 /* Initialize the output module now to let it override any crucial
551 * option settings (for instance, GIF wants to force color quantization).
552 */
553 switch (requested_fmt) {
554 #ifdef BMP_SUPPORTED
555 case FMT_BMP:
556 dest_mgr = jinit_write_bmp(&cinfo, FALSE);
557 break;
558 case FMT_OS2:
559 dest_mgr = jinit_write_bmp(&cinfo, TRUE);
560 break;
561 #endif
562 #ifdef GIF_SUPPORTED
563 case FMT_GIF:
564 dest_mgr = jinit_write_gif(&cinfo, TRUE);
565 break;
566 case FMT_GIF0:
567 dest_mgr = jinit_write_gif(&cinfo, FALSE);
568 break;
569 #endif
570 #ifdef PPM_SUPPORTED
571 case FMT_PPM:
572 dest_mgr = jinit_write_ppm(&cinfo);
573 break;
574 #endif
575 #ifdef RLE_SUPPORTED
576 case FMT_RLE:
577 dest_mgr = jinit_write_rle(&cinfo);
578 break;
579 #endif
580 #ifdef TARGA_SUPPORTED
581 case FMT_TARGA:
582 dest_mgr = jinit_write_targa(&cinfo);
583 break;
584 #endif
585 default:
586 ERREXIT(&cinfo, JERR_UNSUPPORTED_FORMAT);
587 }
588 dest_mgr->output_file = output_file;
589
590 /* Start decompressor */
591 (void) jpeg_start_decompress(&cinfo);
592
593 /* Write output file header */
594 (*dest_mgr->start_output) (&cinfo, dest_mgr);
595
596 /* Process data */
597 while (cinfo.output_scanline < cinfo.output_height) {
598 num_scanlines = jpeg_read_scanlines(&cinfo, dest_mgr->buffer,
599 dest_mgr->buffer_height);
600 (*dest_mgr->put_pixel_rows) (&cinfo, dest_mgr, num_scanlines);
601 }
602
603 #ifdef PROGRESS_REPORT
604 /* Hack: count final pass as done in case finish_output does an extra pass.
605 * The library won't have updated completed_passes.
606 */
607 progress.pub.completed_passes = progress.pub.total_passes;
608 #endif
609
610 /* Finish decompression and release memory.
611 * I must do it in this order because output module has allocated memory
612 * of lifespan JPOOL_IMAGE; it needs to finish before releasing memory.
613 */
614 (*dest_mgr->finish_output) (&cinfo, dest_mgr);
615 (void) jpeg_finish_decompress(&cinfo);
616 jpeg_destroy_decompress(&cinfo);
617
618 /* Close files, if we opened them */
619 if (input_file != stdin)
620 fclose(input_file);
621 if (output_file != stdout)
622 fclose(output_file);
623
624 #ifdef PROGRESS_REPORT
625 end_progress_monitor((j_common_ptr) &cinfo);
626 #endif
627
628 /* All done. */
629 exit(jerr.num_warnings ? EXIT_WARNING : EXIT_SUCCESS);
630 return 0; /* suppress no-return-value warnings */
631 }