1ffe2e8f940893cc2673a921a007551a9a95dd16
[libav.git] / cmdutils.c
1 /*
2 * Various utilities for command line tools
3 * Copyright (c) 2000-2003 Fabrice Bellard
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 #include <string.h>
23 #include <stdlib.h>
24 #include <errno.h>
25 #include <math.h>
26
27 /* Include only the enabled headers since some compilers (namely, Sun
28 Studio) will not omit unused inline functions and create undefined
29 references to libraries that are not being built. */
30
31 #include "config.h"
32 #include "libavformat/avformat.h"
33 #include "libavfilter/avfilter.h"
34 #include "libavdevice/avdevice.h"
35 #include "libswscale/swscale.h"
36 #include "libpostproc/postprocess.h"
37 #include "libavutil/avstring.h"
38 #include "libavutil/pixdesc.h"
39 #include "libavcodec/opt.h"
40 #include "cmdutils.h"
41 #include "version.h"
42 #if CONFIG_NETWORK
43 #include "libavformat/network.h"
44 #endif
45 #if HAVE_SYS_RESOURCE_H
46 #include <sys/resource.h>
47 #endif
48
49 const char **opt_names;
50 static int opt_name_count;
51 AVCodecContext *avcodec_opts[CODEC_TYPE_NB];
52 AVFormatContext *avformat_opts;
53 struct SwsContext *sws_opts;
54
55 const int this_year = 2010;
56
57 double parse_number_or_die(const char *context, const char *numstr, int type, double min, double max)
58 {
59 char *tail;
60 const char *error;
61 double d = strtod(numstr, &tail);
62 if (*tail)
63 error= "Expected number for %s but found: %s\n";
64 else if (d < min || d > max)
65 error= "The value for %s was %s which is not within %f - %f\n";
66 else if(type == OPT_INT64 && (int64_t)d != d)
67 error= "Expected int64 for %s but found %s\n";
68 else
69 return d;
70 fprintf(stderr, error, context, numstr, min, max);
71 exit(1);
72 }
73
74 int64_t parse_time_or_die(const char *context, const char *timestr, int is_duration)
75 {
76 int64_t us = parse_date(timestr, is_duration);
77 if (us == INT64_MIN) {
78 fprintf(stderr, "Invalid %s specification for %s: %s\n",
79 is_duration ? "duration" : "date", context, timestr);
80 exit(1);
81 }
82 return us;
83 }
84
85 void show_help_options(const OptionDef *options, const char *msg, int mask, int value)
86 {
87 const OptionDef *po;
88 int first;
89
90 first = 1;
91 for(po = options; po->name != NULL; po++) {
92 char buf[64];
93 if ((po->flags & mask) == value) {
94 if (first) {
95 printf("%s", msg);
96 first = 0;
97 }
98 av_strlcpy(buf, po->name, sizeof(buf));
99 if (po->flags & HAS_ARG) {
100 av_strlcat(buf, " ", sizeof(buf));
101 av_strlcat(buf, po->argname, sizeof(buf));
102 }
103 printf("-%-17s %s\n", buf, po->help);
104 }
105 }
106 }
107
108 static const OptionDef* find_option(const OptionDef *po, const char *name){
109 while (po->name != NULL) {
110 if (!strcmp(name, po->name))
111 break;
112 po++;
113 }
114 return po;
115 }
116
117 void parse_options(int argc, char **argv, const OptionDef *options,
118 void (* parse_arg_function)(const char*))
119 {
120 const char *opt, *arg;
121 int optindex, handleoptions=1;
122 const OptionDef *po;
123
124 /* parse options */
125 optindex = 1;
126 while (optindex < argc) {
127 opt = argv[optindex++];
128
129 if (handleoptions && opt[0] == '-' && opt[1] != '\0') {
130 int bool_val = 1;
131 if (opt[1] == '-' && opt[2] == '\0') {
132 handleoptions = 0;
133 continue;
134 }
135 opt++;
136 po= find_option(options, opt);
137 if (!po->name && opt[0] == 'n' && opt[1] == 'o') {
138 /* handle 'no' bool option */
139 po = find_option(options, opt + 2);
140 if (!(po->name && (po->flags & OPT_BOOL)))
141 goto unknown_opt;
142 bool_val = 0;
143 }
144 if (!po->name)
145 po= find_option(options, "default");
146 if (!po->name) {
147 unknown_opt:
148 fprintf(stderr, "%s: unrecognized option '%s'\n", argv[0], opt);
149 exit(1);
150 }
151 arg = NULL;
152 if (po->flags & HAS_ARG) {
153 arg = argv[optindex++];
154 if (!arg) {
155 fprintf(stderr, "%s: missing argument for option '%s'\n", argv[0], opt);
156 exit(1);
157 }
158 }
159 if (po->flags & OPT_STRING) {
160 char *str;
161 str = av_strdup(arg);
162 *po->u.str_arg = str;
163 } else if (po->flags & OPT_BOOL) {
164 *po->u.int_arg = bool_val;
165 } else if (po->flags & OPT_INT) {
166 *po->u.int_arg = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
167 } else if (po->flags & OPT_INT64) {
168 *po->u.int64_arg = parse_number_or_die(opt, arg, OPT_INT64, INT64_MIN, INT64_MAX);
169 } else if (po->flags & OPT_FLOAT) {
170 *po->u.float_arg = parse_number_or_die(opt, arg, OPT_FLOAT, -1.0/0.0, 1.0/0.0);
171 } else if (po->flags & OPT_FUNC2) {
172 if (po->u.func2_arg(opt, arg) < 0) {
173 fprintf(stderr, "%s: invalid value '%s' for option '%s'\n", argv[0], arg, opt);
174 exit(1);
175 }
176 } else {
177 po->u.func_arg(arg);
178 }
179 if(po->flags & OPT_EXIT)
180 exit(0);
181 } else {
182 if (parse_arg_function)
183 parse_arg_function(opt);
184 }
185 }
186 }
187
188 int opt_default(const char *opt, const char *arg){
189 int type;
190 int ret= 0;
191 const AVOption *o= NULL;
192 int opt_types[]={AV_OPT_FLAG_VIDEO_PARAM, AV_OPT_FLAG_AUDIO_PARAM, 0, AV_OPT_FLAG_SUBTITLE_PARAM, 0};
193
194 for(type=0; type<CODEC_TYPE_NB && ret>= 0; type++){
195 const AVOption *o2 = av_find_opt(avcodec_opts[0], opt, NULL, opt_types[type], opt_types[type]);
196 if(o2)
197 ret = av_set_string3(avcodec_opts[type], opt, arg, 1, &o);
198 }
199 if(!o)
200 ret = av_set_string3(avformat_opts, opt, arg, 1, &o);
201 if(!o && sws_opts)
202 ret = av_set_string3(sws_opts, opt, arg, 1, &o);
203 if(!o){
204 if(opt[0] == 'a')
205 ret = av_set_string3(avcodec_opts[CODEC_TYPE_AUDIO], opt+1, arg, 1, &o);
206 else if(opt[0] == 'v')
207 ret = av_set_string3(avcodec_opts[CODEC_TYPE_VIDEO], opt+1, arg, 1, &o);
208 else if(opt[0] == 's')
209 ret = av_set_string3(avcodec_opts[CODEC_TYPE_SUBTITLE], opt+1, arg, 1, &o);
210 }
211 if (o && ret < 0) {
212 fprintf(stderr, "Invalid value '%s' for option '%s'\n", arg, opt);
213 exit(1);
214 }
215 if (!o) {
216 fprintf(stderr, "Unrecognized option '%s'\n", opt);
217 exit(1);
218 }
219
220 // av_log(NULL, AV_LOG_ERROR, "%s:%s: %f 0x%0X\n", opt, arg, av_get_double(avcodec_opts, opt, NULL), (int)av_get_int(avcodec_opts, opt, NULL));
221
222 //FIXME we should always use avcodec_opts, ... for storing options so there will not be any need to keep track of what i set over this
223 opt_names= av_realloc(opt_names, sizeof(void*)*(opt_name_count+1));
224 opt_names[opt_name_count++]= o->name;
225
226 if(avcodec_opts[0]->debug || avformat_opts->debug)
227 av_log_set_level(AV_LOG_DEBUG);
228 return 0;
229 }
230
231 int opt_loglevel(const char *opt, const char *arg)
232 {
233 const struct { const char *name; int level; } log_levels[] = {
234 { "quiet" , AV_LOG_QUIET },
235 { "panic" , AV_LOG_PANIC },
236 { "fatal" , AV_LOG_FATAL },
237 { "error" , AV_LOG_ERROR },
238 { "warning", AV_LOG_WARNING },
239 { "info" , AV_LOG_INFO },
240 { "verbose", AV_LOG_VERBOSE },
241 { "debug" , AV_LOG_DEBUG },
242 };
243 char *tail;
244 int level;
245 int i;
246
247 for (i = 0; i < FF_ARRAY_ELEMS(log_levels); i++) {
248 if (!strcmp(log_levels[i].name, arg)) {
249 av_log_set_level(log_levels[i].level);
250 return 0;
251 }
252 }
253
254 level = strtol(arg, &tail, 10);
255 if (*tail) {
256 fprintf(stderr, "Invalid loglevel \"%s\". "
257 "Possible levels are numbers or:\n", arg);
258 for (i = 0; i < FF_ARRAY_ELEMS(log_levels); i++)
259 fprintf(stderr, "\"%s\"\n", log_levels[i].name);
260 exit(1);
261 }
262 av_log_set_level(level);
263 return 0;
264 }
265
266 int opt_timelimit(const char *opt, const char *arg)
267 {
268 #if HAVE_SETRLIMIT
269 int lim = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
270 struct rlimit rl = { lim, lim + 1 };
271 if (setrlimit(RLIMIT_CPU, &rl))
272 perror("setrlimit");
273 #else
274 fprintf(stderr, "Warning: -%s not implemented on this OS\n", opt);
275 #endif
276 return 0;
277 }
278
279 void set_context_opts(void *ctx, void *opts_ctx, int flags)
280 {
281 int i;
282 for(i=0; i<opt_name_count; i++){
283 char buf[256];
284 const AVOption *opt;
285 const char *str= av_get_string(opts_ctx, opt_names[i], &opt, buf, sizeof(buf));
286 /* if an option with name opt_names[i] is present in opts_ctx then str is non-NULL */
287 if(str && ((opt->flags & flags) == flags))
288 av_set_string3(ctx, opt_names[i], str, 1, NULL);
289 }
290 }
291
292 void print_error(const char *filename, int err)
293 {
294 char errbuf[128];
295
296 switch(err) {
297 #if CONFIG_NETWORK
298 case AVERROR(FF_NETERROR(EPROTONOSUPPORT)):
299 fprintf(stderr, "%s: Unsupported network protocol\n", filename);
300 break;
301 #endif
302 default:
303 av_strerror(err, errbuf, sizeof(errbuf));
304 fprintf(stderr, "%s: %s\n", filename, errbuf);
305 }
306 }
307
308 #define PRINT_LIB_VERSION(outstream,libname,LIBNAME,indent) \
309 if (CONFIG_##LIBNAME) { \
310 unsigned int version = libname##_version(); \
311 fprintf(outstream, "%slib%-10s %2d.%2d.%2d / %2d.%2d.%2d\n", \
312 indent? " " : "", #libname, \
313 LIB##LIBNAME##_VERSION_MAJOR, \
314 LIB##LIBNAME##_VERSION_MINOR, \
315 LIB##LIBNAME##_VERSION_MICRO, \
316 version >> 16, version >> 8 & 0xff, version & 0xff); \
317 }
318
319 static void print_all_lib_versions(FILE* outstream, int indent)
320 {
321 PRINT_LIB_VERSION(outstream, avutil, AVUTIL, indent);
322 PRINT_LIB_VERSION(outstream, avcodec, AVCODEC, indent);
323 PRINT_LIB_VERSION(outstream, avformat, AVFORMAT, indent);
324 PRINT_LIB_VERSION(outstream, avdevice, AVDEVICE, indent);
325 PRINT_LIB_VERSION(outstream, avfilter, AVFILTER, indent);
326 PRINT_LIB_VERSION(outstream, swscale, SWSCALE, indent);
327 PRINT_LIB_VERSION(outstream, postproc, POSTPROC, indent);
328 }
329
330 static void maybe_print_config(const char *lib, const char *cfg)
331 {
332 static int warned_cfg;
333
334 if (strcmp(FFMPEG_CONFIGURATION, cfg)) {
335 if (!warned_cfg) {
336 fprintf(stderr, " WARNING: library configuration mismatch\n");
337 warned_cfg = 1;
338 }
339 fprintf(stderr, " %-11s configuration: %s\n", lib, cfg);
340 }
341 }
342
343 #define PRINT_LIB_CONFIG(lib, tag, cfg) do { \
344 if (CONFIG_##lib) \
345 maybe_print_config(tag, cfg); \
346 } while (0)
347
348 void show_banner(void)
349 {
350 fprintf(stderr, "%s version " FFMPEG_VERSION ", Copyright (c) %d-%d the FFmpeg developers\n",
351 program_name, program_birth_year, this_year);
352 fprintf(stderr, " built on %s %s with %s %s\n",
353 __DATE__, __TIME__, CC_TYPE, CC_VERSION);
354 fprintf(stderr, " configuration: " FFMPEG_CONFIGURATION "\n");
355 PRINT_LIB_CONFIG(AVUTIL, "libavutil", avutil_configuration());
356 PRINT_LIB_CONFIG(AVCODEC, "libavcodec", avcodec_configuration());
357 PRINT_LIB_CONFIG(AVFORMAT, "libavformat", avformat_configuration());
358 PRINT_LIB_CONFIG(AVDEVICE, "libavdevice", avdevice_configuration());
359 PRINT_LIB_CONFIG(AVFILTER, "libavfilter", avfilter_configuration());
360 PRINT_LIB_CONFIG(SWSCALE, "libswscale", swscale_configuration());
361 PRINT_LIB_CONFIG(POSTPROC, "libpostproc", postproc_configuration());
362 print_all_lib_versions(stderr, 1);
363 }
364
365 void show_version(void) {
366 printf("%s " FFMPEG_VERSION "\n", program_name);
367 print_all_lib_versions(stdout, 0);
368 }
369
370 void show_license(void)
371 {
372 printf(
373 #if CONFIG_NONFREE
374 "This version of %s has nonfree parts compiled in.\n"
375 "Therefore it is not legally redistributable.\n",
376 program_name
377 #elif CONFIG_GPLV3
378 "%s is free software; you can redistribute it and/or modify\n"
379 "it under the terms of the GNU General Public License as published by\n"
380 "the Free Software Foundation; either version 3 of the License, or\n"
381 "(at your option) any later version.\n"
382 "\n"
383 "%s is distributed in the hope that it will be useful,\n"
384 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
385 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
386 "GNU General Public License for more details.\n"
387 "\n"
388 "You should have received a copy of the GNU General Public License\n"
389 "along with %s. If not, see <http://www.gnu.org/licenses/>.\n",
390 program_name, program_name, program_name
391 #elif CONFIG_GPL
392 "%s is free software; you can redistribute it and/or modify\n"
393 "it under the terms of the GNU General Public License as published by\n"
394 "the Free Software Foundation; either version 2 of the License, or\n"
395 "(at your option) any later version.\n"
396 "\n"
397 "%s is distributed in the hope that it will be useful,\n"
398 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
399 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
400 "GNU General Public License for more details.\n"
401 "\n"
402 "You should have received a copy of the GNU General Public License\n"
403 "along with %s; if not, write to the Free Software\n"
404 "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n",
405 program_name, program_name, program_name
406 #elif CONFIG_LGPLV3
407 "%s is free software; you can redistribute it and/or modify\n"
408 "it under the terms of the GNU Lesser General Public License as published by\n"
409 "the Free Software Foundation; either version 3 of the License, or\n"
410 "(at your option) any later version.\n"
411 "\n"
412 "%s is distributed in the hope that it will be useful,\n"
413 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
414 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
415 "GNU Lesser General Public License for more details.\n"
416 "\n"
417 "You should have received a copy of the GNU Lesser General Public License\n"
418 "along with %s. If not, see <http://www.gnu.org/licenses/>.\n",
419 program_name, program_name, program_name
420 #else
421 "%s is free software; you can redistribute it and/or\n"
422 "modify it under the terms of the GNU Lesser General Public\n"
423 "License as published by the Free Software Foundation; either\n"
424 "version 2.1 of the License, or (at your option) any later version.\n"
425 "\n"
426 "%s is distributed in the hope that it will be useful,\n"
427 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
428 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU\n"
429 "Lesser General Public License for more details.\n"
430 "\n"
431 "You should have received a copy of the GNU Lesser General Public\n"
432 "License along with %s; if not, write to the Free Software\n"
433 "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n",
434 program_name, program_name, program_name
435 #endif
436 );
437 }
438
439 void list_fmts(void (*get_fmt_string)(char *buf, int buf_size, int fmt), int nb_fmts)
440 {
441 int i;
442 char fmt_str[128];
443 for (i=-1; i < nb_fmts; i++) {
444 get_fmt_string (fmt_str, sizeof(fmt_str), i);
445 fprintf(stdout, "%s\n", fmt_str);
446 }
447 }
448
449 void show_formats(void)
450 {
451 AVInputFormat *ifmt=NULL;
452 AVOutputFormat *ofmt=NULL;
453 const char *last_name;
454
455 printf(
456 "File formats:\n"
457 " D. = Demuxing supported\n"
458 " .E = Muxing supported\n"
459 " --\n");
460 last_name= "000";
461 for(;;){
462 int decode=0;
463 int encode=0;
464 const char *name=NULL;
465 const char *long_name=NULL;
466
467 while((ofmt= av_oformat_next(ofmt))) {
468 if((name == NULL || strcmp(ofmt->name, name)<0) &&
469 strcmp(ofmt->name, last_name)>0){
470 name= ofmt->name;
471 long_name= ofmt->long_name;
472 encode=1;
473 }
474 }
475 while((ifmt= av_iformat_next(ifmt))) {
476 if((name == NULL || strcmp(ifmt->name, name)<0) &&
477 strcmp(ifmt->name, last_name)>0){
478 name= ifmt->name;
479 long_name= ifmt->long_name;
480 encode=0;
481 }
482 if(name && strcmp(ifmt->name, name)==0)
483 decode=1;
484 }
485 if(name==NULL)
486 break;
487 last_name= name;
488
489 printf(
490 " %s%s %-15s %s\n",
491 decode ? "D":" ",
492 encode ? "E":" ",
493 name,
494 long_name ? long_name:" ");
495 }
496 }
497
498 void show_codecs(void)
499 {
500 AVCodec *p=NULL, *p2;
501 const char *last_name;
502 printf(
503 "Codecs:\n"
504 " D..... = Decoding supported\n"
505 " .E.... = Encoding supported\n"
506 " ..V... = Video codec\n"
507 " ..A... = Audio codec\n"
508 " ..S... = Subtitle codec\n"
509 " ...S.. = Supports draw_horiz_band\n"
510 " ....D. = Supports direct rendering method 1\n"
511 " .....T = Supports weird frame truncation\n"
512 " ------\n");
513 last_name= "000";
514 for(;;){
515 int decode=0;
516 int encode=0;
517 int cap=0;
518 const char *type_str;
519
520 p2=NULL;
521 while((p= av_codec_next(p))) {
522 if((p2==NULL || strcmp(p->name, p2->name)<0) &&
523 strcmp(p->name, last_name)>0){
524 p2= p;
525 decode= encode= cap=0;
526 }
527 if(p2 && strcmp(p->name, p2->name)==0){
528 if(p->decode) decode=1;
529 if(p->encode) encode=1;
530 cap |= p->capabilities;
531 }
532 }
533 if(p2==NULL)
534 break;
535 last_name= p2->name;
536
537 switch(p2->type) {
538 case CODEC_TYPE_VIDEO:
539 type_str = "V";
540 break;
541 case CODEC_TYPE_AUDIO:
542 type_str = "A";
543 break;
544 case CODEC_TYPE_SUBTITLE:
545 type_str = "S";
546 break;
547 default:
548 type_str = "?";
549 break;
550 }
551 printf(
552 " %s%s%s%s%s%s %-15s %s",
553 decode ? "D": (/*p2->decoder ? "d":*/" "),
554 encode ? "E":" ",
555 type_str,
556 cap & CODEC_CAP_DRAW_HORIZ_BAND ? "S":" ",
557 cap & CODEC_CAP_DR1 ? "D":" ",
558 cap & CODEC_CAP_TRUNCATED ? "T":" ",
559 p2->name,
560 p2->long_name ? p2->long_name : "");
561 /* if(p2->decoder && decode==0)
562 printf(" use %s for decoding", p2->decoder->name);*/
563 printf("\n");
564 }
565 printf("\n");
566 printf(
567 "Note, the names of encoders and decoders do not always match, so there are\n"
568 "several cases where the above table shows encoder only or decoder only entries\n"
569 "even though both encoding and decoding are supported. For example, the h263\n"
570 "decoder corresponds to the h263 and h263p encoders, for file formats it is even\n"
571 "worse.\n");
572 }
573
574 void show_bsfs(void)
575 {
576 AVBitStreamFilter *bsf=NULL;
577
578 printf("Bitstream filters:\n");
579 while((bsf = av_bitstream_filter_next(bsf)))
580 printf("%s\n", bsf->name);
581 printf("\n");
582 }
583
584 void show_protocols(void)
585 {
586 URLProtocol *up=NULL;
587
588 printf("Supported file protocols:\n");
589 while((up = av_protocol_next(up)))
590 printf("%s\n", up->name);
591 }
592
593 void show_filters(void)
594 {
595 AVFilter av_unused(**filter) = NULL;
596
597 printf("Filters:\n");
598 #if CONFIG_AVFILTER
599 while ((filter = av_filter_next(filter)) && *filter)
600 printf("%-16s %s\n", (*filter)->name, (*filter)->description);
601 #endif
602 }
603
604 void show_pix_fmts(void)
605 {
606 enum PixelFormat pix_fmt;
607
608 printf(
609 "Pixel formats:\n"
610 "I.... = Supported Input format for conversion\n"
611 ".O... = Supported Output format for conversion\n"
612 "..H.. = Hardware accelerated format\n"
613 "...P. = Paletted format\n"
614 "....B = Bitstream format\n"
615 "FLAGS NAME NB_COMPONENTS BITS_PER_PIXEL\n"
616 "-----\n");
617
618 for (pix_fmt = 0; pix_fmt < PIX_FMT_NB; pix_fmt++) {
619 const AVPixFmtDescriptor *pix_desc = &av_pix_fmt_descriptors[pix_fmt];
620 printf("%c%c%c%c%c %-16s %d %2d\n",
621 sws_isSupportedInput (pix_fmt) ? 'I' : '.',
622 sws_isSupportedOutput(pix_fmt) ? 'O' : '.',
623 pix_desc->flags & PIX_FMT_HWACCEL ? 'H' : '.',
624 pix_desc->flags & PIX_FMT_PAL ? 'P' : '.',
625 pix_desc->flags & PIX_FMT_BITSTREAM ? 'B' : '.',
626 pix_desc->name,
627 pix_desc->nb_components,
628 av_get_bits_per_pixel(pix_desc));
629 }
630 }
631
632 int read_yesno(void)
633 {
634 int c = getchar();
635 int yesno = (toupper(c) == 'Y');
636
637 while (c != '\n' && c != EOF)
638 c = getchar();
639
640 return yesno;
641 }