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authorDavid Walter Seikel2013-01-13 17:24:39 +1000
committerDavid Walter Seikel2013-01-13 17:24:39 +1000
commit393b5cd1dc438872af89d334ef6e5fcc59f27d47 (patch)
tree6a14521219942a08a1b95cb2f5a923a9edd60f63 /libraries/irrlicht-1.8/source/Irrlicht/jpeglib/cjpeg.c
parentAdd a note about rasters suggested start up code. (diff)
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Added Irrlicht 1.8, but without all the Windows binaries.
Diffstat (limited to 'libraries/irrlicht-1.8/source/Irrlicht/jpeglib/cjpeg.c')
-rw-r--r--libraries/irrlicht-1.8/source/Irrlicht/jpeglib/cjpeg.c643
1 files changed, 643 insertions, 0 deletions
diff --git a/libraries/irrlicht-1.8/source/Irrlicht/jpeglib/cjpeg.c b/libraries/irrlicht-1.8/source/Irrlicht/jpeglib/cjpeg.c
new file mode 100644
index 0000000..a999eee
--- /dev/null
+++ b/libraries/irrlicht-1.8/source/Irrlicht/jpeglib/cjpeg.c
@@ -0,0 +1,643 @@
1/*
2 * cjpeg.c
3 *
4 * Copyright (C) 1991-1998, Thomas G. Lane.
5 * Modified 2003-2011 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 compressor.
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 * cjpeg [options] inputfile outputfile
15 * cjpeg [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 * cjpeg [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#ifdef USE_CCOMMAND /* command-line reader for Macintosh */
31#ifdef __MWERKS__
32#include <SIOUX.h> /* Metrowerks needs this */
33#include <console.h> /* ... and this */
34#endif
35#ifdef THINK_C
36#include <console.h> /* Think declares it here */
37#endif
38#endif
39
40
41/* Create the add-on message string table. */
42
43#define JMESSAGE(code,string) string ,
44
45static const char * const cdjpeg_message_table[] = {
46#include "cderror.h"
47 NULL
48};
49
50
51/*
52 * This routine determines what format the input file is,
53 * and selects the appropriate input-reading module.
54 *
55 * To determine which family of input formats the file belongs to,
56 * we may look only at the first byte of the file, since C does not
57 * guarantee that more than one character can be pushed back with ungetc.
58 * Looking at additional bytes would require one of these approaches:
59 * 1) assume we can fseek() the input file (fails for piped input);
60 * 2) assume we can push back more than one character (works in
61 * some C implementations, but unportable);
62 * 3) provide our own buffering (breaks input readers that want to use
63 * stdio directly, such as the RLE library);
64 * or 4) don't put back the data, and modify the input_init methods to assume
65 * they start reading after the start of file (also breaks RLE library).
66 * #1 is attractive for MS-DOS but is untenable on Unix.
67 *
68 * The most portable solution for file types that can't be identified by their
69 * first byte is to make the user tell us what they are. This is also the
70 * only approach for "raw" file types that contain only arbitrary values.
71 * We presently apply this method for Targa files. Most of the time Targa
72 * files start with 0x00, so we recognize that case. Potentially, however,
73 * a Targa file could start with any byte value (byte 0 is the length of the
74 * seldom-used ID field), so we provide a switch to force Targa input mode.
75 */
76
77static boolean is_targa; /* records user -targa switch */
78
79
80LOCAL(cjpeg_source_ptr)
81select_file_type (j_compress_ptr cinfo, FILE * infile)
82{
83 int c;
84
85 if (is_targa) {
86#ifdef TARGA_SUPPORTED
87 return jinit_read_targa(cinfo);
88#else
89 ERREXIT(cinfo, JERR_TGA_NOTCOMP);
90#endif
91 }
92
93 if ((c = getc(infile)) == EOF)
94 ERREXIT(cinfo, JERR_INPUT_EMPTY);
95 if (ungetc(c, infile) == EOF)
96 ERREXIT(cinfo, JERR_UNGETC_FAILED);
97
98 switch (c) {
99#ifdef BMP_SUPPORTED
100 case 'B':
101 return jinit_read_bmp(cinfo);
102#endif
103#ifdef GIF_SUPPORTED
104 case 'G':
105 return jinit_read_gif(cinfo);
106#endif
107#ifdef PPM_SUPPORTED
108 case 'P':
109 return jinit_read_ppm(cinfo);
110#endif
111#ifdef RLE_SUPPORTED
112 case 'R':
113 return jinit_read_rle(cinfo);
114#endif
115#ifdef TARGA_SUPPORTED
116 case 0x00:
117 return jinit_read_targa(cinfo);
118#endif
119 default:
120 ERREXIT(cinfo, JERR_UNKNOWN_FORMAT);
121 break;
122 }
123
124 return NULL; /* suppress compiler warnings */
125}
126
127
128/*
129 * Argument-parsing code.
130 * The switch parser is designed to be useful with DOS-style command line
131 * syntax, ie, intermixed switches and file names, where only the switches
132 * to the left of a given file name affect processing of that file.
133 * The main program in this file doesn't actually use this capability...
134 */
135
136
137static const char * progname; /* program name for error messages */
138static char * outfilename; /* for -outfile switch */
139
140
141LOCAL(void)
142usage (void)
143/* complain about bad command line */
144{
145 fprintf(stderr, "usage: %s [switches] ", progname);
146#ifdef TWO_FILE_COMMANDLINE
147 fprintf(stderr, "inputfile outputfile\n");
148#else
149 fprintf(stderr, "[inputfile]\n");
150#endif
151
152 fprintf(stderr, "Switches (names may be abbreviated):\n");
153 fprintf(stderr, " -quality N[,...] Compression quality (0..100; 5-95 is useful range)\n");
154 fprintf(stderr, " -grayscale Create monochrome JPEG file\n");
155 fprintf(stderr, " -rgb Create RGB JPEG file\n");
156#ifdef ENTROPY_OPT_SUPPORTED
157 fprintf(stderr, " -optimize Optimize Huffman table (smaller file, but slow compression)\n");
158#endif
159#ifdef C_PROGRESSIVE_SUPPORTED
160 fprintf(stderr, " -progressive Create progressive JPEG file\n");
161#endif
162#ifdef DCT_SCALING_SUPPORTED
163 fprintf(stderr, " -scale M/N Scale image by fraction M/N, eg, 1/2\n");
164#endif
165#ifdef TARGA_SUPPORTED
166 fprintf(stderr, " -targa Input file is Targa format (usually not needed)\n");
167#endif
168 fprintf(stderr, "Switches for advanced users:\n");
169#ifdef C_ARITH_CODING_SUPPORTED
170 fprintf(stderr, " -arithmetic Use arithmetic coding\n");
171#endif
172#ifdef DCT_SCALING_SUPPORTED
173 fprintf(stderr, " -block N DCT block size (1..16; default is 8)\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, " -nosmooth Don't use high-quality downsampling\n");
188 fprintf(stderr, " -restart N Set restart interval in rows, or in blocks with B\n");
189#ifdef INPUT_SMOOTHING_SUPPORTED
190 fprintf(stderr, " -smooth N Smooth dithered input (N=1..100 is strength)\n");
191#endif
192 fprintf(stderr, " -maxmemory N Maximum memory to use (in kbytes)\n");
193 fprintf(stderr, " -outfile name Specify name for output file\n");
194 fprintf(stderr, " -verbose or -debug Emit debug output\n");
195 fprintf(stderr, "Switches for wizards:\n");
196 fprintf(stderr, " -baseline Force baseline quantization tables\n");
197 fprintf(stderr, " -qtables file Use quantization tables given in file\n");
198 fprintf(stderr, " -qslots N[,...] Set component quantization tables\n");
199 fprintf(stderr, " -sample HxV[,...] Set component sampling factors\n");
200#ifdef C_MULTISCAN_FILES_SUPPORTED
201 fprintf(stderr, " -scans file Create multi-scan JPEG per script file\n");
202#endif
203 exit(EXIT_FAILURE);
204}
205
206
207LOCAL(int)
208parse_switches (j_compress_ptr cinfo, int argc, char **argv,
209 int last_file_arg_seen, boolean for_real)
210/* Parse optional switches.
211 * Returns argv[] index of first file-name argument (== argc if none).
212 * Any file names with indexes <= last_file_arg_seen are ignored;
213 * they have presumably been processed in a previous iteration.
214 * (Pass 0 for last_file_arg_seen on the first or only iteration.)
215 * for_real is FALSE on the first (dummy) pass; we may skip any expensive
216 * processing.
217 */
218{
219 int argn;
220 char * arg;
221 boolean force_baseline;
222 boolean simple_progressive;
223 char * qualityarg = NULL; /* saves -quality parm if any */
224 char * qtablefile = NULL; /* saves -qtables filename if any */
225 char * qslotsarg = NULL; /* saves -qslots parm if any */
226 char * samplearg = NULL; /* saves -sample parm if any */
227 char * scansarg = NULL; /* saves -scans parm if any */
228
229 /* Set up default JPEG parameters. */
230
231 force_baseline = FALSE; /* by default, allow 16-bit quantizers */
232 simple_progressive = FALSE;
233 is_targa = FALSE;
234 outfilename = NULL;
235 cinfo->err->trace_level = 0;
236
237 /* Scan command line options, adjust parameters */
238
239 for (argn = 1; argn < argc; argn++) {
240 arg = argv[argn];
241 if (*arg != '-') {
242 /* Not a switch, must be a file name argument */
243 if (argn <= last_file_arg_seen) {
244 outfilename = NULL; /* -outfile applies to just one input file */
245 continue; /* ignore this name if previously processed */
246 }
247 break; /* else done parsing switches */
248 }
249 arg++; /* advance past switch marker character */
250
251 if (keymatch(arg, "arithmetic", 1)) {
252 /* Use arithmetic coding. */
253#ifdef C_ARITH_CODING_SUPPORTED
254 cinfo->arith_code = TRUE;
255#else
256 fprintf(stderr, "%s: sorry, arithmetic coding not supported\n",
257 progname);
258 exit(EXIT_FAILURE);
259#endif
260
261 } else if (keymatch(arg, "baseline", 2)) {
262 /* Force baseline-compatible output (8-bit quantizer values). */
263 force_baseline = TRUE;
264
265 } else if (keymatch(arg, "block", 2)) {
266 /* Set DCT block size. */
267#if defined DCT_SCALING_SUPPORTED && JPEG_LIB_VERSION_MAJOR >= 8 && \
268 (JPEG_LIB_VERSION_MAJOR > 8 || JPEG_LIB_VERSION_MINOR >= 3)
269 int val;
270
271 if (++argn >= argc) /* advance to next argument */
272 usage();
273 if (sscanf(argv[argn], "%d", &val) != 1)
274 usage();
275 if (val < 1 || val > 16)
276 usage();
277 cinfo->block_size = val;
278#else
279 fprintf(stderr, "%s: sorry, block size setting not supported\n",
280 progname);
281 exit(EXIT_FAILURE);
282#endif
283
284 } else if (keymatch(arg, "dct", 2)) {
285 /* Select DCT algorithm. */
286 if (++argn >= argc) /* advance to next argument */
287 usage();
288 if (keymatch(argv[argn], "int", 1)) {
289 cinfo->dct_method = JDCT_ISLOW;
290 } else if (keymatch(argv[argn], "fast", 2)) {
291 cinfo->dct_method = JDCT_IFAST;
292 } else if (keymatch(argv[argn], "float", 2)) {
293 cinfo->dct_method = JDCT_FLOAT;
294 } else
295 usage();
296
297 } else if (keymatch(arg, "debug", 1) || keymatch(arg, "verbose", 1)) {
298 /* Enable debug printouts. */
299 /* On first -d, print version identification */
300 static boolean printed_version = FALSE;
301
302 if (! printed_version) {
303 fprintf(stderr, "Independent JPEG Group's CJPEG, version %s\n%s\n",
304 JVERSION, JCOPYRIGHT);
305 printed_version = TRUE;
306 }
307 cinfo->err->trace_level++;
308
309 } else if (keymatch(arg, "grayscale", 2) || keymatch(arg, "greyscale",2)) {
310 /* Force a monochrome JPEG file to be generated. */
311 jpeg_set_colorspace(cinfo, JCS_GRAYSCALE);
312
313 } else if (keymatch(arg, "rgb", 3)) {
314 /* Force an RGB JPEG file to be generated. */
315 jpeg_set_colorspace(cinfo, JCS_RGB);
316
317 } else if (keymatch(arg, "maxmemory", 3)) {
318 /* Maximum memory in Kb (or Mb with 'm'). */
319 long lval;
320 char ch = 'x';
321
322 if (++argn >= argc) /* advance to next argument */
323 usage();
324 if (sscanf(argv[argn], "%ld%c", &lval, &ch) < 1)
325 usage();
326 if (ch == 'm' || ch == 'M')
327 lval *= 1000L;
328 cinfo->mem->max_memory_to_use = lval * 1000L;
329
330 } else if (keymatch(arg, "nosmooth", 3)) {
331 /* Suppress fancy downsampling */
332 cinfo->do_fancy_downsampling = FALSE;
333
334 } else if (keymatch(arg, "optimize", 1) || keymatch(arg, "optimise", 1)) {
335 /* Enable entropy parm optimization. */
336#ifdef ENTROPY_OPT_SUPPORTED
337 cinfo->optimize_coding = TRUE;
338#else
339 fprintf(stderr, "%s: sorry, entropy optimization was not compiled\n",
340 progname);
341 exit(EXIT_FAILURE);
342#endif
343
344 } else if (keymatch(arg, "outfile", 4)) {
345 /* Set output file name. */
346 if (++argn >= argc) /* advance to next argument */
347 usage();
348 outfilename = argv[argn]; /* save it away for later use */
349
350 } else if (keymatch(arg, "progressive", 1)) {
351 /* Select simple progressive mode. */
352#ifdef C_PROGRESSIVE_SUPPORTED
353 simple_progressive = TRUE;
354 /* We must postpone execution until num_components is known. */
355#else
356 fprintf(stderr, "%s: sorry, progressive output was not compiled\n",
357 progname);
358 exit(EXIT_FAILURE);
359#endif
360
361 } else if (keymatch(arg, "quality", 1)) {
362 /* Quality ratings (quantization table scaling factors). */
363 if (++argn >= argc) /* advance to next argument */
364 usage();
365 qualityarg = argv[argn];
366
367 } else if (keymatch(arg, "qslots", 2)) {
368 /* Quantization table slot numbers. */
369 if (++argn >= argc) /* advance to next argument */
370 usage();
371 qslotsarg = argv[argn];
372 /* Must delay setting qslots until after we have processed any
373 * colorspace-determining switches, since jpeg_set_colorspace sets
374 * default quant table numbers.
375 */
376
377 } else if (keymatch(arg, "qtables", 2)) {
378 /* Quantization tables fetched from file. */
379 if (++argn >= argc) /* advance to next argument */
380 usage();
381 qtablefile = argv[argn];
382 /* We postpone actually reading the file in case -quality comes later. */
383
384 } else if (keymatch(arg, "restart", 1)) {
385 /* Restart interval in MCU rows (or in MCUs with 'b'). */
386 long lval;
387 char ch = 'x';
388
389 if (++argn >= argc) /* advance to next argument */
390 usage();
391 if (sscanf(argv[argn], "%ld%c", &lval, &ch) < 1)
392 usage();
393 if (lval < 0 || lval > 65535L)
394 usage();
395 if (ch == 'b' || ch == 'B') {
396 cinfo->restart_interval = (unsigned int) lval;
397 cinfo->restart_in_rows = 0; /* else prior '-restart n' overrides me */
398 } else {
399 cinfo->restart_in_rows = (int) lval;
400 /* restart_interval will be computed during startup */
401 }
402
403 } else if (keymatch(arg, "sample", 2)) {
404 /* Set sampling factors. */
405 if (++argn >= argc) /* advance to next argument */
406 usage();
407 samplearg = argv[argn];
408 /* Must delay setting sample factors until after we have processed any
409 * colorspace-determining switches, since jpeg_set_colorspace sets
410 * default sampling factors.
411 */
412
413 } else if (keymatch(arg, "scale", 4)) {
414 /* Scale the image by a fraction M/N. */
415 if (++argn >= argc) /* advance to next argument */
416 usage();
417 if (sscanf(argv[argn], "%d/%d",
418 &cinfo->scale_num, &cinfo->scale_denom) != 2)
419 usage();
420
421 } else if (keymatch(arg, "scans", 4)) {
422 /* Set scan script. */
423#ifdef C_MULTISCAN_FILES_SUPPORTED
424 if (++argn >= argc) /* advance to next argument */
425 usage();
426 scansarg = argv[argn];
427 /* We must postpone reading the file in case -progressive appears. */
428#else
429 fprintf(stderr, "%s: sorry, multi-scan output was not compiled\n",
430 progname);
431 exit(EXIT_FAILURE);
432#endif
433
434 } else if (keymatch(arg, "smooth", 2)) {
435 /* Set input smoothing factor. */
436 int val;
437
438 if (++argn >= argc) /* advance to next argument */
439 usage();
440 if (sscanf(argv[argn], "%d", &val) != 1)
441 usage();
442 if (val < 0 || val > 100)
443 usage();
444 cinfo->smoothing_factor = val;
445
446 } else if (keymatch(arg, "targa", 1)) {
447 /* Input file is Targa format. */
448 is_targa = TRUE;
449
450 } else {
451 usage(); /* bogus switch */
452 }
453 }
454
455 /* Post-switch-scanning cleanup */
456
457 if (for_real) {
458
459 /* Set quantization tables for selected quality. */
460 /* Some or all may be overridden if -qtables is present. */
461 if (qualityarg != NULL) /* process -quality if it was present */
462 if (! set_quality_ratings(cinfo, qualityarg, force_baseline))
463 usage();
464
465 if (qtablefile != NULL) /* process -qtables if it was present */
466 if (! read_quant_tables(cinfo, qtablefile, force_baseline))
467 usage();
468
469 if (qslotsarg != NULL) /* process -qslots if it was present */
470 if (! set_quant_slots(cinfo, qslotsarg))
471 usage();
472
473 if (samplearg != NULL) /* process -sample if it was present */
474 if (! set_sample_factors(cinfo, samplearg))
475 usage();
476
477#ifdef C_PROGRESSIVE_SUPPORTED
478 if (simple_progressive) /* process -progressive; -scans can override */
479 jpeg_simple_progression(cinfo);
480#endif
481
482#ifdef C_MULTISCAN_FILES_SUPPORTED
483 if (scansarg != NULL) /* process -scans if it was present */
484 if (! read_scan_script(cinfo, scansarg))
485 usage();
486#endif
487 }
488
489 return argn; /* return index of next arg (file name) */
490}
491
492
493/*
494 * The main program.
495 */
496
497int
498main (int argc, char **argv)
499{
500 struct jpeg_compress_struct cinfo;
501 struct jpeg_error_mgr jerr;
502#ifdef PROGRESS_REPORT
503 struct cdjpeg_progress_mgr progress;
504#endif
505 int file_index;
506 cjpeg_source_ptr src_mgr;
507 FILE * input_file;
508 FILE * output_file;
509 JDIMENSION num_scanlines;
510
511 /* On Mac, fetch a command line. */
512#ifdef USE_CCOMMAND
513 argc = ccommand(&argv);
514#endif
515
516 progname = argv[0];
517 if (progname == NULL || progname[0] == 0)
518 progname = "cjpeg"; /* in case C library doesn't provide it */
519
520 /* Initialize the JPEG compression object with default error handling. */
521 cinfo.err = jpeg_std_error(&jerr);
522 jpeg_create_compress(&cinfo);
523 /* Add some application-specific error messages (from cderror.h) */
524 jerr.addon_message_table = cdjpeg_message_table;
525 jerr.first_addon_message = JMSG_FIRSTADDONCODE;
526 jerr.last_addon_message = JMSG_LASTADDONCODE;
527
528 /* Now safe to enable signal catcher. */
529#ifdef NEED_SIGNAL_CATCHER
530 enable_signal_catcher((j_common_ptr) &cinfo);
531#endif
532
533 /* Initialize JPEG parameters.
534 * Much of this may be overridden later.
535 * In particular, we don't yet know the input file's color space,
536 * but we need to provide some value for jpeg_set_defaults() to work.
537 */
538
539 cinfo.in_color_space = JCS_RGB; /* arbitrary guess */
540 jpeg_set_defaults(&cinfo);
541
542 /* Scan command line to find file names.
543 * It is convenient to use just one switch-parsing routine, but the switch
544 * values read here are ignored; we will rescan the switches after opening
545 * the input file.
546 */
547
548 file_index = parse_switches(&cinfo, argc, argv, 0, FALSE);
549
550#ifdef TWO_FILE_COMMANDLINE
551 /* Must have either -outfile switch or explicit output file name */
552 if (outfilename == NULL) {
553 if (file_index != argc-2) {
554 fprintf(stderr, "%s: must name one input and one output file\n",
555 progname);
556 usage();
557 }
558 outfilename = argv[file_index+1];
559 } else {
560 if (file_index != argc-1) {
561 fprintf(stderr, "%s: must name one input and one output file\n",
562 progname);
563 usage();
564 }
565 }
566#else
567 /* Unix style: expect zero or one file name */
568 if (file_index < argc-1) {
569 fprintf(stderr, "%s: only one input file\n", progname);
570 usage();
571 }
572#endif /* TWO_FILE_COMMANDLINE */
573
574 /* Open the input file. */
575 if (file_index < argc) {
576 if ((input_file = fopen(argv[file_index], READ_BINARY)) == NULL) {
577 fprintf(stderr, "%s: can't open %s\n", progname, argv[file_index]);
578 exit(EXIT_FAILURE);
579 }
580 } else {
581 /* default input file is stdin */
582 input_file = read_stdin();
583 }
584
585 /* Open the output file. */
586 if (outfilename != NULL) {
587 if ((output_file = fopen(outfilename, WRITE_BINARY)) == NULL) {
588 fprintf(stderr, "%s: can't open %s\n", progname, outfilename);
589 exit(EXIT_FAILURE);
590 }
591 } else {
592 /* default output file is stdout */
593 output_file = write_stdout();
594 }
595
596#ifdef PROGRESS_REPORT
597 start_progress_monitor((j_common_ptr) &cinfo, &progress);
598#endif
599
600 /* Figure out the input file format, and set up to read it. */
601 src_mgr = select_file_type(&cinfo, input_file);
602 src_mgr->input_file = input_file;
603
604 /* Read the input file header to obtain file size & colorspace. */
605 (*src_mgr->start_input) (&cinfo, src_mgr);
606
607 /* Now that we know input colorspace, fix colorspace-dependent defaults */
608 jpeg_default_colorspace(&cinfo);
609
610 /* Adjust default compression parameters by re-parsing the options */
611 file_index = parse_switches(&cinfo, argc, argv, 0, TRUE);
612
613 /* Specify data destination for compression */
614 jpeg_stdio_dest(&cinfo, output_file);
615
616 /* Start compressor */
617 jpeg_start_compress(&cinfo, TRUE);
618
619 /* Process data */
620 while (cinfo.next_scanline < cinfo.image_height) {
621 num_scanlines = (*src_mgr->get_pixel_rows) (&cinfo, src_mgr);
622 (void) jpeg_write_scanlines(&cinfo, src_mgr->buffer, num_scanlines);
623 }
624
625 /* Finish compression and release memory */
626 (*src_mgr->finish_input) (&cinfo, src_mgr);
627 jpeg_finish_compress(&cinfo);
628 jpeg_destroy_compress(&cinfo);
629
630 /* Close files, if we opened them */
631 if (input_file != stdin)
632 fclose(input_file);
633 if (output_file != stdout)
634 fclose(output_file);
635
636#ifdef PROGRESS_REPORT
637 end_progress_monitor((j_common_ptr) &cinfo);
638#endif
639
640 /* All done. */
641 exit(jerr.num_warnings ? EXIT_WARNING : EXIT_SUCCESS);
642 return 0; /* suppress no-return-value warnings */
643}
generated by cgit v1.1 at 2024-08-31 11:29:03 +0000