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author | David Walter Seikel | 2014-01-13 19:47:58 +1000 |
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committer | David Walter Seikel | 2014-01-13 19:47:58 +1000 |
commit | f9158592e1478b2013afc7041d9ed041cf2d2f4a (patch) | |
tree | b16e389d7988700e21b4c9741044cefa536dcbae /libraries/irrlicht-1.8/source/Irrlicht/jpeglib/cjpeg.c | |
parent | Libraries readme updated with change markers and more of the Irrlicht changes. (diff) | |
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Update Irrlicht to 1.8.1. Include actual change markers this time. lol
Diffstat (limited to 'libraries/irrlicht-1.8/source/Irrlicht/jpeglib/cjpeg.c')
-rw-r--r-- | libraries/irrlicht-1.8/source/Irrlicht/jpeglib/cjpeg.c | 643 |
1 files changed, 0 insertions, 643 deletions
diff --git a/libraries/irrlicht-1.8/source/Irrlicht/jpeglib/cjpeg.c b/libraries/irrlicht-1.8/source/Irrlicht/jpeglib/cjpeg.c deleted file mode 100644 index 9a9a09a..0000000 --- a/libraries/irrlicht-1.8/source/Irrlicht/jpeglib/cjpeg.c +++ /dev/null | |||
@@ -1,643 +0,0 @@ | |||
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 | |||
45 | static 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 | |||
77 | static boolean is_targa; /* records user -targa switch */ | ||
78 | |||
79 | |||
80 | LOCAL(cjpeg_source_ptr) | ||
81 | select_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 | |||
137 | static const char * progname; /* program name for error messages */ | ||
138 | static char * outfilename; /* for -outfile switch */ | ||
139 | |||
140 | |||
141 | LOCAL(void) | ||
142 | usage (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 | |||
207 | LOCAL(int) | ||
208 | parse_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 | |||
497 | int | ||
498 | main (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 | } | ||