1 /*
2 * cjpeg.c
3 *
4 * This file was part of the Independent JPEG Group's software:
5 * Copyright (C) 1991-1998, Thomas G. Lane.
6 * Modified 2003-2011 by Guido Vollbeding.
7 * libjpeg-turbo Modifications:
8 * Copyright (C) 2010, 2013-2014, D. R. Commander.
9 * For conditions of distribution and use, see the accompanying README.ijg
10 * file.
11 *
12 * This file contains a command-line user interface for the JPEG compressor.
13 * It should work on any system with Unix- or MS-DOS-style command lines.
14 *
15 * Two different command line styles are permitted, depending on the
16 * compile-time switch TWO_FILE_COMMANDLINE:
17 * cjpeg [options] inputfile outputfile
18 * cjpeg [options] [inputfile]
19 * In the second style, output is always to standard output, which you'd
20 * normally redirect to a file or pipe to some other program. Input is
21 * either from a named file or from standard input (typically redirected).
22 * The second style is convenient on Unix but is unhelpful on systems that
23 * don't support pipes. Also, you MUST use the first style if your system
24 * doesn't do binary I/O to stdin/stdout.
25 * To simplify script writing, the "-outfile" switch is provided. The syntax
26 * cjpeg [options] -outfile outputfile inputfile
27 * works regardless of which command line style is used.
28 */
29
30 #include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */
31 #include "jversion.h" /* for version message */
32 #include "jconfigint.h"
33
34 #ifdef USE_CCOMMAND /* command-line reader for Macintosh */
35 #ifdef __MWERKS__
36 #include <SIOUX.h> /* Metrowerks needs this */
37 #include <console.h> /* ... and this */
38 #endif
39 #ifdef THINK_C
40 #include <console.h> /* Think declares it here */
41 #endif
42 #endif
43
44
45 /* Create the add-on message string table. */
46
47 #define JMESSAGE(code,string) string ,
48
49 static const char * const cdjpeg_message_table[] = {
50 #include "cderror.h"
51 NULL
52 };
53
54
55 /*
56 * This routine determines what format the input file is,
57 * and selects the appropriate input-reading module.
58 *
59 * To determine which family of input formats the file belongs to,
60 * we may look only at the first byte of the file, since C does not
61 * guarantee that more than one character can be pushed back with ungetc.
62 * Looking at additional bytes would require one of these approaches:
63 * 1) assume we can fseek() the input file (fails for piped input);
64 * 2) assume we can push back more than one character (works in
65 * some C implementations, but unportable);
66 * 3) provide our own buffering (breaks input readers that want to use
67 * stdio directly, such as the RLE library);
68 * or 4) don't put back the data, and modify the input_init methods to assume
69 * they start reading after the start of file (also breaks RLE library).
70 * #1 is attractive for MS-DOS but is untenable on Unix.
71 *
72 * The most portable solution for file types that can't be identified by their
73 * first byte is to make the user tell us what they are. This is also the
74 * only approach for "raw" file types that contain only arbitrary values.
75 * We presently apply this method for Targa files. Most of the time Targa
76 * files start with 0x00, so we recognize that case. Potentially, however,
77 * a Targa file could start with any byte value (byte 0 is the length of the
78 * seldom-used ID field), so we provide a switch to force Targa input mode.
79 */
80
81 static boolean is_targa; /* records user -targa switch */
82
83
84 LOCAL(cjpeg_source_ptr)
select_file_type(j_compress_ptr cinfo,FILE * infile)85 select_file_type (j_compress_ptr cinfo, FILE *infile)
86 {
87 int c;
88
89 if (is_targa) {
90 #ifdef TARGA_SUPPORTED
91 return jinit_read_targa(cinfo);
92 #else
93 ERREXIT(cinfo, JERR_TGA_NOTCOMP);
94 #endif
95 }
96
97 if ((c = getc(infile)) == EOF)
98 ERREXIT(cinfo, JERR_INPUT_EMPTY);
99 if (ungetc(c, infile) == EOF)
100 ERREXIT(cinfo, JERR_UNGETC_FAILED);
101
102 switch (c) {
103 #ifdef BMP_SUPPORTED
104 case 'B':
105 return jinit_read_bmp(cinfo);
106 #endif
107 #ifdef GIF_SUPPORTED
108 case 'G':
109 return jinit_read_gif(cinfo);
110 #endif
111 #ifdef PPM_SUPPORTED
112 case 'P':
113 return jinit_read_ppm(cinfo);
114 #endif
115 #ifdef RLE_SUPPORTED
116 case 'R':
117 return jinit_read_rle(cinfo);
118 #endif
119 #ifdef TARGA_SUPPORTED
120 case 0x00:
121 return jinit_read_targa(cinfo);
122 #endif
123 default:
124 ERREXIT(cinfo, JERR_UNKNOWN_FORMAT);
125 break;
126 }
127
128 return NULL; /* suppress compiler warnings */
129 }
130
131
132 /*
133 * Argument-parsing code.
134 * The switch parser is designed to be useful with DOS-style command line
135 * syntax, ie, intermixed switches and file names, where only the switches
136 * to the left of a given file name affect processing of that file.
137 * The main program in this file doesn't actually use this capability...
138 */
139
140
141 static const char *progname; /* program name for error messages */
142 static char *outfilename; /* for -outfile switch */
143 boolean memdst; /* for -memdst switch */
144
145
146 LOCAL(void)
usage(void)147 usage (void)
148 /* complain about bad command line */
149 {
150 fprintf(stderr, "usage: %s [switches] ", progname);
151 #ifdef TWO_FILE_COMMANDLINE
152 fprintf(stderr, "inputfile outputfile\n");
153 #else
154 fprintf(stderr, "[inputfile]\n");
155 #endif
156
157 fprintf(stderr, "Switches (names may be abbreviated):\n");
158 fprintf(stderr, " -quality N[,...] Compression quality (0..100; 5-95 is most useful range,\n");
159 fprintf(stderr, " default is 75)\n");
160 fprintf(stderr, " -grayscale Create monochrome JPEG file\n");
161 fprintf(stderr, " -rgb Create RGB JPEG file\n");
162 #ifdef ENTROPY_OPT_SUPPORTED
163 fprintf(stderr, " -optimize Optimize Huffman table (smaller file, but slow compression)\n");
164 #endif
165 #ifdef C_PROGRESSIVE_SUPPORTED
166 fprintf(stderr, " -progressive Create progressive JPEG file\n");
167 #endif
168 #ifdef TARGA_SUPPORTED
169 fprintf(stderr, " -targa Input file is Targa format (usually not needed)\n");
170 #endif
171 fprintf(stderr, "Switches for advanced users:\n");
172 #ifdef C_ARITH_CODING_SUPPORTED
173 fprintf(stderr, " -arithmetic Use arithmetic coding\n");
174 #endif
175 #ifdef DCT_ISLOW_SUPPORTED
176 fprintf(stderr, " -dct int Use integer DCT method%s\n",
177 (JDCT_DEFAULT == JDCT_ISLOW ? " (default)" : ""));
178 #endif
179 #ifdef DCT_IFAST_SUPPORTED
180 fprintf(stderr, " -dct fast Use fast integer DCT (less accurate)%s\n",
181 (JDCT_DEFAULT == JDCT_IFAST ? " (default)" : ""));
182 #endif
183 #ifdef DCT_FLOAT_SUPPORTED
184 fprintf(stderr, " -dct float Use floating-point DCT method%s\n",
185 (JDCT_DEFAULT == JDCT_FLOAT ? " (default)" : ""));
186 #endif
187 fprintf(stderr, " -restart N Set restart interval in rows, or in blocks with B\n");
188 #ifdef INPUT_SMOOTHING_SUPPORTED
189 fprintf(stderr, " -smooth N Smooth dithered input (N=1..100 is strength)\n");
190 #endif
191 fprintf(stderr, " -maxmemory N Maximum memory to use (in kbytes)\n");
192 fprintf(stderr, " -outfile name Specify name for output file\n");
193 #if JPEG_LIB_VERSION >= 80 || defined(MEM_SRCDST_SUPPORTED)
194 fprintf(stderr, " -memdst Compress to memory instead of file (useful for benchmarking)\n");
195 #endif
196 fprintf(stderr, " -verbose or -debug Emit debug output\n");
197 fprintf(stderr, " -version Print version information and exit\n");
198 fprintf(stderr, "Switches for wizards:\n");
199 fprintf(stderr, " -baseline Force baseline quantization tables\n");
200 fprintf(stderr, " -qtables file Use quantization tables given in file\n");
201 fprintf(stderr, " -qslots N[,...] Set component quantization tables\n");
202 fprintf(stderr, " -sample HxV[,...] Set component sampling factors\n");
203 #ifdef C_MULTISCAN_FILES_SUPPORTED
204 fprintf(stderr, " -scans file Create multi-scan JPEG per script file\n");
205 #endif
206 exit(EXIT_FAILURE);
207 }
208
209
210 LOCAL(int)
parse_switches(j_compress_ptr cinfo,int argc,char ** argv,int last_file_arg_seen,boolean for_real)211 parse_switches (j_compress_ptr cinfo, int argc, char **argv,
212 int last_file_arg_seen, boolean for_real)
213 /* Parse optional switches.
214 * Returns argv[] index of first file-name argument (== argc if none).
215 * Any file names with indexes <= last_file_arg_seen are ignored;
216 * they have presumably been processed in a previous iteration.
217 * (Pass 0 for last_file_arg_seen on the first or only iteration.)
218 * for_real is FALSE on the first (dummy) pass; we may skip any expensive
219 * processing.
220 */
221 {
222 int argn;
223 char *arg;
224 boolean force_baseline;
225 boolean simple_progressive;
226 char *qualityarg = NULL; /* saves -quality parm if any */
227 char *qtablefile = NULL; /* saves -qtables filename if any */
228 char *qslotsarg = NULL; /* saves -qslots parm if any */
229 char *samplearg = NULL; /* saves -sample parm if any */
230 char *scansarg = NULL; /* saves -scans parm if any */
231
232 /* Set up default JPEG parameters. */
233
234 force_baseline = FALSE; /* by default, allow 16-bit quantizers */
235 simple_progressive = FALSE;
236 is_targa = FALSE;
237 outfilename = NULL;
238 memdst = FALSE;
239 cinfo->err->trace_level = 0;
240
241 /* Scan command line options, adjust parameters */
242
243 for (argn = 1; argn < argc; argn++) {
244 arg = argv[argn];
245 if (*arg != '-') {
246 /* Not a switch, must be a file name argument */
247 if (argn <= last_file_arg_seen) {
248 outfilename = NULL; /* -outfile applies to just one input file */
249 continue; /* ignore this name if previously processed */
250 }
251 break; /* else done parsing switches */
252 }
253 arg++; /* advance past switch marker character */
254
255 if (keymatch(arg, "arithmetic", 1)) {
256 /* Use arithmetic coding. */
257 #ifdef C_ARITH_CODING_SUPPORTED
258 cinfo->arith_code = TRUE;
259 #else
260 fprintf(stderr, "%s: sorry, arithmetic coding not supported\n",
261 progname);
262 exit(EXIT_FAILURE);
263 #endif
264
265 } else if (keymatch(arg, "baseline", 1)) {
266 /* Force baseline-compatible output (8-bit quantizer values). */
267 force_baseline = TRUE;
268
269 } else if (keymatch(arg, "dct", 2)) {
270 /* Select DCT algorithm. */
271 if (++argn >= argc) /* advance to next argument */
272 usage();
273 if (keymatch(argv[argn], "int", 1)) {
274 cinfo->dct_method = JDCT_ISLOW;
275 } else if (keymatch(argv[argn], "fast", 2)) {
276 cinfo->dct_method = JDCT_IFAST;
277 } else if (keymatch(argv[argn], "float", 2)) {
278 cinfo->dct_method = JDCT_FLOAT;
279 } else
280 usage();
281
282 } else if (keymatch(arg, "debug", 1) || keymatch(arg, "verbose", 1)) {
283 /* Enable debug printouts. */
284 /* On first -d, print version identification */
285 static boolean printed_version = FALSE;
286
287 if (! printed_version) {
288 fprintf(stderr, "%s version %s (build %s)\n",
289 PACKAGE_NAME, VERSION, BUILD);
290 fprintf(stderr, "%s\n\n", JCOPYRIGHT);
291 fprintf(stderr, "Emulating The Independent JPEG Group's software, version %s\n\n",
292 JVERSION);
293 printed_version = TRUE;
294 }
295 cinfo->err->trace_level++;
296
297 } else if (keymatch(arg, "version", 4)) {
298 fprintf(stderr, "%s version %s (build %s)\n",
299 PACKAGE_NAME, VERSION, BUILD);
300 exit(EXIT_SUCCESS);
301
302 } else if (keymatch(arg, "grayscale", 2) || keymatch(arg, "greyscale",2)) {
303 /* Force a monochrome JPEG file to be generated. */
304 jpeg_set_colorspace(cinfo, JCS_GRAYSCALE);
305
306 } else if (keymatch(arg, "rgb", 3)) {
307 /* Force an RGB JPEG file to be generated. */
308 jpeg_set_colorspace(cinfo, JCS_RGB);
309
310 } else if (keymatch(arg, "maxmemory", 3)) {
311 /* Maximum memory in Kb (or Mb with 'm'). */
312 long lval;
313 char ch = 'x';
314
315 if (++argn >= argc) /* advance to next argument */
316 usage();
317 if (sscanf(argv[argn], "%ld%c", &lval, &ch) < 1)
318 usage();
319 if (ch == 'm' || ch == 'M')
320 lval *= 1000L;
321 cinfo->mem->max_memory_to_use = lval * 1000L;
322
323 } else if (keymatch(arg, "optimize", 1) || keymatch(arg, "optimise", 1)) {
324 /* Enable entropy parm optimization. */
325 #ifdef ENTROPY_OPT_SUPPORTED
326 cinfo->optimize_coding = TRUE;
327 #else
328 fprintf(stderr, "%s: sorry, entropy optimization was not compiled in\n",
329 progname);
330 exit(EXIT_FAILURE);
331 #endif
332
333 } else if (keymatch(arg, "outfile", 4)) {
334 /* Set output file name. */
335 if (++argn >= argc) /* advance to next argument */
336 usage();
337 outfilename = argv[argn]; /* save it away for later use */
338
339 } else if (keymatch(arg, "progressive", 1)) {
340 /* Select simple progressive mode. */
341 #ifdef C_PROGRESSIVE_SUPPORTED
342 simple_progressive = TRUE;
343 /* We must postpone execution until num_components is known. */
344 #else
345 fprintf(stderr, "%s: sorry, progressive output was not compiled in\n",
346 progname);
347 exit(EXIT_FAILURE);
348 #endif
349
350 } else if (keymatch(arg, "memdst", 2)) {
351 /* Use in-memory destination manager */
352 #if JPEG_LIB_VERSION >= 80 || defined(MEM_SRCDST_SUPPORTED)
353 memdst = TRUE;
354 #else
355 fprintf(stderr, "%s: sorry, in-memory destination manager was not compiled in\n",
356 progname);
357 exit(EXIT_FAILURE);
358 #endif
359
360 } else if (keymatch(arg, "quality", 1)) {
361 /* Quality ratings (quantization table scaling factors). */
362 if (++argn >= argc) /* advance to next argument */
363 usage();
364 qualityarg = argv[argn];
365
366 } else if (keymatch(arg, "qslots", 2)) {
367 /* Quantization table slot numbers. */
368 if (++argn >= argc) /* advance to next argument */
369 usage();
370 qslotsarg = argv[argn];
371 /* Must delay setting qslots until after we have processed any
372 * colorspace-determining switches, since jpeg_set_colorspace sets
373 * default quant table numbers.
374 */
375
376 } else if (keymatch(arg, "qtables", 2)) {
377 /* Quantization tables fetched from file. */
378 if (++argn >= argc) /* advance to next argument */
379 usage();
380 qtablefile = argv[argn];
381 /* We postpone actually reading the file in case -quality comes later. */
382
383 } else if (keymatch(arg, "restart", 1)) {
384 /* Restart interval in MCU rows (or in MCUs with 'b'). */
385 long lval;
386 char ch = 'x';
387
388 if (++argn >= argc) /* advance to next argument */
389 usage();
390 if (sscanf(argv[argn], "%ld%c", &lval, &ch) < 1)
391 usage();
392 if (lval < 0 || lval > 65535L)
393 usage();
394 if (ch == 'b' || ch == 'B') {
395 cinfo->restart_interval = (unsigned int) lval;
396 cinfo->restart_in_rows = 0; /* else prior '-restart n' overrides me */
397 } else {
398 cinfo->restart_in_rows = (int) lval;
399 /* restart_interval will be computed during startup */
400 }
401
402 } else if (keymatch(arg, "sample", 2)) {
403 /* Set sampling factors. */
404 if (++argn >= argc) /* advance to next argument */
405 usage();
406 samplearg = argv[argn];
407 /* Must delay setting sample factors until after we have processed any
408 * colorspace-determining switches, since jpeg_set_colorspace sets
409 * default sampling factors.
410 */
411
412 } else if (keymatch(arg, "scans", 4)) {
413 /* Set scan script. */
414 #ifdef C_MULTISCAN_FILES_SUPPORTED
415 if (++argn >= argc) /* advance to next argument */
416 usage();
417 scansarg = argv[argn];
418 /* We must postpone reading the file in case -progressive appears. */
419 #else
420 fprintf(stderr, "%s: sorry, multi-scan output was not compiled in\n",
421 progname);
422 exit(EXIT_FAILURE);
423 #endif
424
425 } else if (keymatch(arg, "smooth", 2)) {
426 /* Set input smoothing factor. */
427 int val;
428
429 if (++argn >= argc) /* advance to next argument */
430 usage();
431 if (sscanf(argv[argn], "%d", &val) != 1)
432 usage();
433 if (val < 0 || val > 100)
434 usage();
435 cinfo->smoothing_factor = val;
436
437 } else if (keymatch(arg, "targa", 1)) {
438 /* Input file is Targa format. */
439 is_targa = TRUE;
440
441 } else {
442 usage(); /* bogus switch */
443 }
444 }
445
446 /* Post-switch-scanning cleanup */
447
448 if (for_real) {
449
450 /* Set quantization tables for selected quality. */
451 /* Some or all may be overridden if -qtables is present. */
452 if (qualityarg != NULL) /* process -quality if it was present */
453 if (! set_quality_ratings(cinfo, qualityarg, force_baseline))
454 usage();
455
456 if (qtablefile != NULL) /* process -qtables if it was present */
457 if (! read_quant_tables(cinfo, qtablefile, force_baseline))
458 usage();
459
460 if (qslotsarg != NULL) /* process -qslots if it was present */
461 if (! set_quant_slots(cinfo, qslotsarg))
462 usage();
463
464 if (samplearg != NULL) /* process -sample if it was present */
465 if (! set_sample_factors(cinfo, samplearg))
466 usage();
467
468 #ifdef C_PROGRESSIVE_SUPPORTED
469 if (simple_progressive) /* process -progressive; -scans can override */
470 jpeg_simple_progression(cinfo);
471 #endif
472
473 #ifdef C_MULTISCAN_FILES_SUPPORTED
474 if (scansarg != NULL) /* process -scans if it was present */
475 if (! read_scan_script(cinfo, scansarg))
476 usage();
477 #endif
478 }
479
480 return argn; /* return index of next arg (file name) */
481 }
482
483
484 /*
485 * The main program.
486 */
487
488 int
main(int argc,char ** argv)489 main (int argc, char **argv)
490 {
491 struct jpeg_compress_struct cinfo;
492 struct jpeg_error_mgr jerr;
493 #ifdef PROGRESS_REPORT
494 struct cdjpeg_progress_mgr progress;
495 #endif
496 int file_index;
497 cjpeg_source_ptr src_mgr;
498 FILE *input_file;
499 FILE *output_file = NULL;
500 unsigned char *outbuffer = NULL;
501 unsigned long outsize = 0;
502 JDIMENSION num_scanlines;
503
504 /* On Mac, fetch a command line. */
505 #ifdef USE_CCOMMAND
506 argc = ccommand(&argv);
507 #endif
508
509 progname = argv[0];
510 if (progname == NULL || progname[0] == 0)
511 progname = "cjpeg"; /* in case C library doesn't provide it */
512
513 /* Initialize the JPEG compression object with default error handling. */
514 cinfo.err = jpeg_std_error(&jerr);
515 jpeg_create_compress(&cinfo);
516 /* Add some application-specific error messages (from cderror.h) */
517 jerr.addon_message_table = cdjpeg_message_table;
518 jerr.first_addon_message = JMSG_FIRSTADDONCODE;
519 jerr.last_addon_message = JMSG_LASTADDONCODE;
520
521 /* Initialize JPEG parameters.
522 * Much of this may be overridden later.
523 * In particular, we don't yet know the input file's color space,
524 * but we need to provide some value for jpeg_set_defaults() to work.
525 */
526
527 cinfo.in_color_space = JCS_RGB; /* arbitrary guess */
528 jpeg_set_defaults(&cinfo);
529
530 /* Scan command line to find file names.
531 * It is convenient to use just one switch-parsing routine, but the switch
532 * values read here are ignored; we will rescan the switches after opening
533 * the input file.
534 */
535
536 file_index = parse_switches(&cinfo, argc, argv, 0, FALSE);
537
538 #ifdef TWO_FILE_COMMANDLINE
539 if (!memdst) {
540 /* Must have either -outfile switch or explicit output file name */
541 if (outfilename == NULL) {
542 if (file_index != argc-2) {
543 fprintf(stderr, "%s: must name one input and one output file\n",
544 progname);
545 usage();
546 }
547 outfilename = argv[file_index+1];
548 } else {
549 if (file_index != argc-1) {
550 fprintf(stderr, "%s: must name one input and one output file\n",
551 progname);
552 usage();
553 }
554 }
555 }
556 #else
557 /* Unix style: expect zero or one file name */
558 if (file_index < argc-1) {
559 fprintf(stderr, "%s: only one input file\n", progname);
560 usage();
561 }
562 #endif /* TWO_FILE_COMMANDLINE */
563
564 /* Open the input file. */
565 if (file_index < argc) {
566 if ((input_file = fopen(argv[file_index], READ_BINARY)) == NULL) {
567 fprintf(stderr, "%s: can't open %s\n", progname, argv[file_index]);
568 exit(EXIT_FAILURE);
569 }
570 } else {
571 /* default input file is stdin */
572 input_file = read_stdin();
573 }
574
575 /* Open the output file. */
576 if (outfilename != NULL) {
577 if ((output_file = fopen(outfilename, WRITE_BINARY)) == NULL) {
578 fprintf(stderr, "%s: can't open %s\n", progname, outfilename);
579 exit(EXIT_FAILURE);
580 }
581 } else if (!memdst) {
582 /* default output file is stdout */
583 output_file = write_stdout();
584 }
585
586 #ifdef PROGRESS_REPORT
587 start_progress_monitor((j_common_ptr) &cinfo, &progress);
588 #endif
589
590 /* Figure out the input file format, and set up to read it. */
591 src_mgr = select_file_type(&cinfo, input_file);
592 src_mgr->input_file = input_file;
593
594 /* Read the input file header to obtain file size & colorspace. */
595 (*src_mgr->start_input) (&cinfo, src_mgr);
596
597 /* Now that we know input colorspace, fix colorspace-dependent defaults */
598 jpeg_default_colorspace(&cinfo);
599
600 /* Adjust default compression parameters by re-parsing the options */
601 file_index = parse_switches(&cinfo, argc, argv, 0, TRUE);
602
603 /* Specify data destination for compression */
604 #if JPEG_LIB_VERSION >= 80 || defined(MEM_SRCDST_SUPPORTED)
605 if (memdst)
606 jpeg_mem_dest(&cinfo, &outbuffer, &outsize);
607 else
608 #endif
609 jpeg_stdio_dest(&cinfo, output_file);
610
611 /* Start compressor */
612 jpeg_start_compress(&cinfo, TRUE);
613
614 /* Process data */
615 while (cinfo.next_scanline < cinfo.image_height) {
616 num_scanlines = (*src_mgr->get_pixel_rows) (&cinfo, src_mgr);
617 (void) jpeg_write_scanlines(&cinfo, src_mgr->buffer, num_scanlines);
618 }
619
620 /* Finish compression and release memory */
621 (*src_mgr->finish_input) (&cinfo, src_mgr);
622 jpeg_finish_compress(&cinfo);
623 jpeg_destroy_compress(&cinfo);
624
625 /* Close files, if we opened them */
626 if (input_file != stdin)
627 fclose(input_file);
628 if (output_file != stdout && output_file != NULL)
629 fclose(output_file);
630
631 #ifdef PROGRESS_REPORT
632 end_progress_monitor((j_common_ptr) &cinfo);
633 #endif
634
635 if (memdst) {
636 fprintf(stderr, "Compressed size: %lu bytes\n", outsize);
637 if (outbuffer != NULL)
638 free(outbuffer);
639 }
640
641 /* All done. */
642 exit(jerr.num_warnings ? EXIT_WARNING : EXIT_SUCCESS);
643 return 0; /* suppress no-return-value warnings */
644 }
645