mov: handle h263 and flv1 for codec_tag 'H','2','6','3'
[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 Libav.
6 *
7 * Libav 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 * Libav 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 Libav; 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 "libavresample/avresample.h"
36 #include "libswscale/swscale.h"
37 #include "libavutil/avassert.h"
38 #include "libavutil/avstring.h"
39 #include "libavutil/mathematics.h"
40 #include "libavutil/imgutils.h"
41 #include "libavutil/parseutils.h"
42 #include "libavutil/pixdesc.h"
43 #include "libavutil/eval.h"
44 #include "libavutil/dict.h"
45 #include "libavutil/opt.h"
46 #include "cmdutils.h"
47 #include "version.h"
48 #if CONFIG_NETWORK
49 #include "libavformat/network.h"
50 #endif
51 #if HAVE_SYS_RESOURCE_H
52 #include <sys/time.h>
53 #include <sys/resource.h>
54 #endif
55
56 struct SwsContext *sws_opts;
57 AVDictionary *format_opts, *codec_opts;
58
59 static const int this_year = 2012;
60
61 void init_opts(void)
62 {
63 #if CONFIG_SWSCALE
64 sws_opts = sws_getContext(16, 16, 0, 16, 16, 0, SWS_BICUBIC,
65 NULL, NULL, NULL);
66 #endif
67 }
68
69 void uninit_opts(void)
70 {
71 #if CONFIG_SWSCALE
72 sws_freeContext(sws_opts);
73 sws_opts = NULL;
74 #endif
75 av_dict_free(&format_opts);
76 av_dict_free(&codec_opts);
77 }
78
79 void log_callback_help(void *ptr, int level, const char *fmt, va_list vl)
80 {
81 vfprintf(stdout, fmt, vl);
82 }
83
84 double parse_number_or_die(const char *context, const char *numstr, int type,
85 double min, double max)
86 {
87 char *tail;
88 const char *error;
89 double d = av_strtod(numstr, &tail);
90 if (*tail)
91 error = "Expected number for %s but found: %s\n";
92 else if (d < min || d > max)
93 error = "The value for %s was %s which is not within %f - %f\n";
94 else if (type == OPT_INT64 && (int64_t)d != d)
95 error = "Expected int64 for %s but found %s\n";
96 else if (type == OPT_INT && (int)d != d)
97 error = "Expected int for %s but found %s\n";
98 else
99 return d;
100 av_log(NULL, AV_LOG_FATAL, error, context, numstr, min, max);
101 exit(1);
102 return 0;
103 }
104
105 int64_t parse_time_or_die(const char *context, const char *timestr,
106 int is_duration)
107 {
108 int64_t us;
109 if (av_parse_time(&us, timestr, is_duration) < 0) {
110 av_log(NULL, AV_LOG_FATAL, "Invalid %s specification for %s: %s\n",
111 is_duration ? "duration" : "date", context, timestr);
112 exit(1);
113 }
114 return us;
115 }
116
117 void show_help_options(const OptionDef *options, const char *msg, int req_flags,
118 int rej_flags, int alt_flags)
119 {
120 const OptionDef *po;
121 int first;
122
123 first = 1;
124 for (po = options; po->name != NULL; po++) {
125 char buf[64];
126
127 if (((po->flags & req_flags) != req_flags) ||
128 (alt_flags && !(po->flags & alt_flags)) ||
129 (po->flags & rej_flags))
130 continue;
131
132 if (first) {
133 printf("%s\n", msg);
134 first = 0;
135 }
136 av_strlcpy(buf, po->name, sizeof(buf));
137 if (po->argname) {
138 av_strlcat(buf, " ", sizeof(buf));
139 av_strlcat(buf, po->argname, sizeof(buf));
140 }
141 printf("-%-17s %s\n", buf, po->help);
142 }
143 printf("\n");
144 }
145
146 void show_help_children(const AVClass *class, int flags)
147 {
148 const AVClass *child = NULL;
149 av_opt_show2(&class, NULL, flags, 0);
150 printf("\n");
151
152 while (child = av_opt_child_class_next(class, child))
153 show_help_children(child, flags);
154 }
155
156 static const OptionDef *find_option(const OptionDef *po, const char *name)
157 {
158 const char *p = strchr(name, ':');
159 int len = p ? p - name : strlen(name);
160
161 while (po->name != NULL) {
162 if (!strncmp(name, po->name, len) && strlen(po->name) == len)
163 break;
164 po++;
165 }
166 return po;
167 }
168
169 #if HAVE_COMMANDLINETOARGVW
170 #include <windows.h>
171 #include <shellapi.h>
172 /* Will be leaked on exit */
173 static char** win32_argv_utf8 = NULL;
174 static int win32_argc = 0;
175
176 /**
177 * Prepare command line arguments for executable.
178 * For Windows - perform wide-char to UTF-8 conversion.
179 * Input arguments should be main() function arguments.
180 * @param argc_ptr Arguments number (including executable)
181 * @param argv_ptr Arguments list.
182 */
183 static void prepare_app_arguments(int *argc_ptr, char ***argv_ptr)
184 {
185 char *argstr_flat;
186 wchar_t **argv_w;
187 int i, buffsize = 0, offset = 0;
188
189 if (win32_argv_utf8) {
190 *argc_ptr = win32_argc;
191 *argv_ptr = win32_argv_utf8;
192 return;
193 }
194
195 win32_argc = 0;
196 argv_w = CommandLineToArgvW(GetCommandLineW(), &win32_argc);
197 if (win32_argc <= 0 || !argv_w)
198 return;
199
200 /* determine the UTF-8 buffer size (including NULL-termination symbols) */
201 for (i = 0; i < win32_argc; i++)
202 buffsize += WideCharToMultiByte(CP_UTF8, 0, argv_w[i], -1,
203 NULL, 0, NULL, NULL);
204
205 win32_argv_utf8 = av_mallocz(sizeof(char *) * (win32_argc + 1) + buffsize);
206 argstr_flat = (char *)win32_argv_utf8 + sizeof(char *) * (win32_argc + 1);
207 if (win32_argv_utf8 == NULL) {
208 LocalFree(argv_w);
209 return;
210 }
211
212 for (i = 0; i < win32_argc; i++) {
213 win32_argv_utf8[i] = &argstr_flat[offset];
214 offset += WideCharToMultiByte(CP_UTF8, 0, argv_w[i], -1,
215 &argstr_flat[offset],
216 buffsize - offset, NULL, NULL);
217 }
218 win32_argv_utf8[i] = NULL;
219 LocalFree(argv_w);
220
221 *argc_ptr = win32_argc;
222 *argv_ptr = win32_argv_utf8;
223 }
224 #else
225 static inline void prepare_app_arguments(int *argc_ptr, char ***argv_ptr)
226 {
227 /* nothing to do */
228 }
229 #endif /* HAVE_COMMANDLINETOARGVW */
230
231 static int write_option(void *optctx, const OptionDef *po, const char *opt,
232 const char *arg)
233 {
234 /* new-style options contain an offset into optctx, old-style address of
235 * a global var*/
236 void *dst = po->flags & (OPT_OFFSET | OPT_SPEC) ?
237 (uint8_t *)optctx + po->u.off : po->u.dst_ptr;
238 int *dstcount;
239
240 if (po->flags & OPT_SPEC) {
241 SpecifierOpt **so = dst;
242 char *p = strchr(opt, ':');
243
244 dstcount = (int *)(so + 1);
245 *so = grow_array(*so, sizeof(**so), dstcount, *dstcount + 1);
246 (*so)[*dstcount - 1].specifier = av_strdup(p ? p + 1 : "");
247 dst = &(*so)[*dstcount - 1].u;
248 }
249
250 if (po->flags & OPT_STRING) {
251 char *str;
252 str = av_strdup(arg);
253 av_freep(dst);
254 *(char **)dst = str;
255 } else if (po->flags & OPT_BOOL || po->flags & OPT_INT) {
256 *(int *)dst = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
257 } else if (po->flags & OPT_INT64) {
258 *(int64_t *)dst = parse_number_or_die(opt, arg, OPT_INT64, INT64_MIN, INT64_MAX);
259 } else if (po->flags & OPT_TIME) {
260 *(int64_t *)dst = parse_time_or_die(opt, arg, 1);
261 } else if (po->flags & OPT_FLOAT) {
262 *(float *)dst = parse_number_or_die(opt, arg, OPT_FLOAT, -INFINITY, INFINITY);
263 } else if (po->flags & OPT_DOUBLE) {
264 *(double *)dst = parse_number_or_die(opt, arg, OPT_DOUBLE, -INFINITY, INFINITY);
265 } else if (po->u.func_arg) {
266 int ret = po->u.func_arg(optctx, opt, arg);
267 if (ret < 0) {
268 av_log(NULL, AV_LOG_ERROR,
269 "Failed to set value '%s' for option '%s'\n", arg, opt);
270 return ret;
271 }
272 }
273 if (po->flags & OPT_EXIT)
274 exit(0);
275
276 return 0;
277 }
278
279 int parse_option(void *optctx, const char *opt, const char *arg,
280 const OptionDef *options)
281 {
282 const OptionDef *po;
283 int ret;
284
285 po = find_option(options, opt);
286 if (!po->name && opt[0] == 'n' && opt[1] == 'o') {
287 /* handle 'no' bool option */
288 po = find_option(options, opt + 2);
289 if ((po->name && (po->flags & OPT_BOOL)))
290 arg = "0";
291 } else if (po->flags & OPT_BOOL)
292 arg = "1";
293
294 if (!po->name)
295 po = find_option(options, "default");
296 if (!po->name) {
297 av_log(NULL, AV_LOG_ERROR, "Unrecognized option '%s'\n", opt);
298 return AVERROR(EINVAL);
299 }
300 if (po->flags & HAS_ARG && !arg) {
301 av_log(NULL, AV_LOG_ERROR, "Missing argument for option '%s'\n", opt);
302 return AVERROR(EINVAL);
303 }
304
305 ret = write_option(optctx, po, opt, arg);
306 if (ret < 0)
307 return ret;
308
309 return !!(po->flags & HAS_ARG);
310 }
311
312 void parse_options(void *optctx, int argc, char **argv, const OptionDef *options,
313 void (*parse_arg_function)(void *, const char*))
314 {
315 const char *opt;
316 int optindex, handleoptions = 1, ret;
317
318 /* perform system-dependent conversions for arguments list */
319 prepare_app_arguments(&argc, &argv);
320
321 /* parse options */
322 optindex = 1;
323 while (optindex < argc) {
324 opt = argv[optindex++];
325
326 if (handleoptions && opt[0] == '-' && opt[1] != '\0') {
327 if (opt[1] == '-' && opt[2] == '\0') {
328 handleoptions = 0;
329 continue;
330 }
331 opt++;
332
333 if ((ret = parse_option(optctx, opt, argv[optindex], options)) < 0)
334 exit(1);
335 optindex += ret;
336 } else {
337 if (parse_arg_function)
338 parse_arg_function(optctx, opt);
339 }
340 }
341 }
342
343 int parse_optgroup(void *optctx, OptionGroup *g)
344 {
345 int i, ret;
346
347 av_log(NULL, AV_LOG_DEBUG, "Parsing a group of options: %s %s.\n",
348 g->group_def->name, g->arg);
349
350 for (i = 0; i < g->nb_opts; i++) {
351 Option *o = &g->opts[i];
352
353 av_log(NULL, AV_LOG_DEBUG, "Applying option %s (%s) with argument %s.\n",
354 o->key, o->opt->help, o->val);
355
356 ret = write_option(optctx, o->opt, o->key, o->val);
357 if (ret < 0)
358 return ret;
359 }
360
361 av_log(NULL, AV_LOG_DEBUG, "Successfully parsed a group of options.\n");
362
363 return 0;
364 }
365
366 int locate_option(int argc, char **argv, const OptionDef *options,
367 const char *optname)
368 {
369 const OptionDef *po;
370 int i;
371
372 for (i = 1; i < argc; i++) {
373 const char *cur_opt = argv[i];
374
375 if (*cur_opt++ != '-')
376 continue;
377
378 po = find_option(options, cur_opt);
379 if (!po->name && cur_opt[0] == 'n' && cur_opt[1] == 'o')
380 po = find_option(options, cur_opt + 2);
381
382 if ((!po->name && !strcmp(cur_opt, optname)) ||
383 (po->name && !strcmp(optname, po->name)))
384 return i;
385
386 if (!po || po->flags & HAS_ARG)
387 i++;
388 }
389 return 0;
390 }
391
392 void parse_loglevel(int argc, char **argv, const OptionDef *options)
393 {
394 int idx = locate_option(argc, argv, options, "loglevel");
395 if (!idx)
396 idx = locate_option(argc, argv, options, "v");
397 if (idx && argv[idx + 1])
398 opt_loglevel(NULL, "loglevel", argv[idx + 1]);
399 }
400
401 #define FLAGS (o->type == AV_OPT_TYPE_FLAGS) ? AV_DICT_APPEND : 0
402 int opt_default(void *optctx, const char *opt, const char *arg)
403 {
404 const AVOption *o;
405 char opt_stripped[128];
406 const char *p;
407 const AVClass *cc = avcodec_get_class(), *fc = avformat_get_class();
408 #if CONFIG_SWSCALE
409 const AVClass *sc = sws_get_class();
410 #endif
411
412 if (!(p = strchr(opt, ':')))
413 p = opt + strlen(opt);
414 av_strlcpy(opt_stripped, opt, FFMIN(sizeof(opt_stripped), p - opt + 1));
415
416 if ((o = av_opt_find(&cc, opt_stripped, NULL, 0,
417 AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ)) ||
418 ((opt[0] == 'v' || opt[0] == 'a' || opt[0] == 's') &&
419 (o = av_opt_find(&cc, opt + 1, NULL, 0, AV_OPT_SEARCH_FAKE_OBJ))))
420 av_dict_set(&codec_opts, opt, arg, FLAGS);
421 else if ((o = av_opt_find(&fc, opt, NULL, 0,
422 AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ)))
423 av_dict_set(&format_opts, opt, arg, FLAGS);
424 #if CONFIG_SWSCALE
425 else if ((o = av_opt_find(&sc, opt, NULL, 0,
426 AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ))) {
427 // XXX we only support sws_flags, not arbitrary sws options
428 int ret = av_opt_set(sws_opts, opt, arg, 0);
429 if (ret < 0) {
430 av_log(NULL, AV_LOG_ERROR, "Error setting option %s.\n", opt);
431 return ret;
432 }
433 }
434 #endif
435
436 if (o)
437 return 0;
438 return AVERROR_OPTION_NOT_FOUND;
439 }
440
441 /*
442 * Check whether given option is a group separator.
443 *
444 * @return index of the group definition that matched or -1 if none
445 */
446 static int match_group_separator(const OptionGroupDef *groups, const char *opt)
447 {
448 const OptionGroupDef *p = groups;
449
450 while (p->name) {
451 if (p->sep && !strcmp(p->sep, opt))
452 return p - groups;
453 p++;
454 }
455
456 return -1;
457 }
458
459 /*
460 * Finish parsing an option group.
461 *
462 * @param group_idx which group definition should this group belong to
463 * @param arg argument of the group delimiting option
464 */
465 static void finish_group(OptionParseContext *octx, int group_idx,
466 const char *arg)
467 {
468 OptionGroupList *l = &octx->groups[group_idx];
469 OptionGroup *g;
470
471 GROW_ARRAY(l->groups, l->nb_groups);
472 g = &l->groups[l->nb_groups - 1];
473
474 *g = octx->cur_group;
475 g->arg = arg;
476 g->group_def = l->group_def;
477 #if CONFIG_SWSCALE
478 g->sws_opts = sws_opts;
479 #endif
480 g->codec_opts = codec_opts;
481 g->format_opts = format_opts;
482
483 codec_opts = NULL;
484 format_opts = NULL;
485 #if CONFIG_SWSCALE
486 sws_opts = NULL;
487 #endif
488 init_opts();
489
490 memset(&octx->cur_group, 0, sizeof(octx->cur_group));
491 }
492
493 /*
494 * Add an option instance to currently parsed group.
495 */
496 static void add_opt(OptionParseContext *octx, const OptionDef *opt,
497 const char *key, const char *val)
498 {
499 int global = !(opt->flags & (OPT_PERFILE | OPT_SPEC | OPT_OFFSET));
500 OptionGroup *g = global ? &octx->global_opts : &octx->cur_group;
501
502 GROW_ARRAY(g->opts, g->nb_opts);
503 g->opts[g->nb_opts - 1].opt = opt;
504 g->opts[g->nb_opts - 1].key = key;
505 g->opts[g->nb_opts - 1].val = val;
506 }
507
508 static void init_parse_context(OptionParseContext *octx,
509 const OptionGroupDef *groups)
510 {
511 static const OptionGroupDef global_group = { "global" };
512 const OptionGroupDef *g = groups;
513 int i;
514
515 memset(octx, 0, sizeof(*octx));
516
517 while (g->name)
518 g++;
519 octx->nb_groups = g - groups;
520 octx->groups = av_mallocz(sizeof(*octx->groups) * octx->nb_groups);
521 if (!octx->groups)
522 exit(1);
523
524 for (i = 0; i < octx->nb_groups; i++)
525 octx->groups[i].group_def = &groups[i];
526
527 octx->global_opts.group_def = &global_group;
528 octx->global_opts.arg = "";
529
530 init_opts();
531 }
532
533 void uninit_parse_context(OptionParseContext *octx)
534 {
535 int i, j;
536
537 for (i = 0; i < octx->nb_groups; i++) {
538 OptionGroupList *l = &octx->groups[i];
539
540 for (j = 0; j < l->nb_groups; j++) {
541 av_freep(&l->groups[j].opts);
542 av_dict_free(&l->groups[j].codec_opts);
543 av_dict_free(&l->groups[j].format_opts);
544 #if CONFIG_SWSCALE
545 sws_freeContext(l->groups[j].sws_opts);
546 #endif
547 }
548 av_freep(&l->groups);
549 }
550 av_freep(&octx->groups);
551
552 av_freep(&octx->cur_group.opts);
553 av_freep(&octx->global_opts.opts);
554
555 uninit_opts();
556 }
557
558 int split_commandline(OptionParseContext *octx, int argc, char *argv[],
559 const OptionDef *options,
560 const OptionGroupDef *groups)
561 {
562 int optindex = 1;
563
564 /* perform system-dependent conversions for arguments list */
565 prepare_app_arguments(&argc, &argv);
566
567 init_parse_context(octx, groups);
568 av_log(NULL, AV_LOG_DEBUG, "Splitting the commandline.\n");
569
570 while (optindex < argc) {
571 const char *opt = argv[optindex++], *arg;
572 const OptionDef *po;
573 int ret;
574
575 av_log(NULL, AV_LOG_DEBUG, "Reading option '%s' ...", opt);
576
577 /* unnamed group separators, e.g. output filename */
578 if (opt[0] != '-' || !opt[1]) {
579 finish_group(octx, 0, opt);
580 av_log(NULL, AV_LOG_DEBUG, " matched as %s.\n", groups[0].name);
581 continue;
582 }
583 opt++;
584
585 #define GET_ARG(arg) \
586 do { \
587 arg = argv[optindex++]; \
588 if (!arg) { \
589 av_log(NULL, AV_LOG_ERROR, "Missing argument for option '%s'.\n", opt);\
590 return AVERROR(EINVAL); \
591 } \
592 } while (0)
593
594 /* named group separators, e.g. -i */
595 if ((ret = match_group_separator(groups, opt)) >= 0) {
596 GET_ARG(arg);
597 finish_group(octx, ret, arg);
598 av_log(NULL, AV_LOG_DEBUG, " matched as %s with argument '%s'.\n",
599 groups[ret].name, arg);
600 continue;
601 }
602
603 /* normal options */
604 po = find_option(options, opt);
605 if (po->name) {
606 if (po->flags & OPT_EXIT) {
607 /* optional argument, e.g. -h */
608 arg = argv[optindex++];
609 } else if (po->flags & HAS_ARG) {
610 GET_ARG(arg);
611 } else {
612 arg = "1";
613 }
614
615 add_opt(octx, po, opt, arg);
616 av_log(NULL, AV_LOG_DEBUG, " matched as option '%s' (%s) with "
617 "argument '%s'.\n", po->name, po->help, arg);
618 continue;
619 }
620
621 /* AVOptions */
622 if (argv[optindex]) {
623 ret = opt_default(NULL, opt, argv[optindex]);
624 if (ret >= 0) {
625 av_log(NULL, AV_LOG_DEBUG, " matched as AVOption '%s' with "
626 "argument '%s'.\n", opt, argv[optindex]);
627 optindex++;
628 continue;
629 } else if (ret != AVERROR_OPTION_NOT_FOUND) {
630 av_log(NULL, AV_LOG_ERROR, "Error parsing option '%s' "
631 "with argument '%s'.\n", opt, argv[optindex]);
632 return ret;
633 }
634 }
635
636 /* boolean -nofoo options */
637 if (opt[0] == 'n' && opt[1] == 'o' &&
638 (po = find_option(options, opt + 2)) &&
639 po->name && po->flags & OPT_BOOL) {
640 add_opt(octx, po, opt, "0");
641 av_log(NULL, AV_LOG_DEBUG, " matched as option '%s' (%s) with "
642 "argument 0.\n", po->name, po->help);
643 continue;
644 }
645
646 av_log(NULL, AV_LOG_ERROR, "Unrecognized option '%s'.\n", opt);
647 return AVERROR_OPTION_NOT_FOUND;
648 }
649
650 if (octx->cur_group.nb_opts || codec_opts || format_opts)
651 av_log(NULL, AV_LOG_WARNING, "Trailing options were found on the "
652 "commandline.\n");
653
654 av_log(NULL, AV_LOG_DEBUG, "Finished splitting the commandline.\n");
655
656 return 0;
657 }
658
659 int opt_loglevel(void *optctx, const char *opt, const char *arg)
660 {
661 const struct { const char *name; int level; } log_levels[] = {
662 { "quiet" , AV_LOG_QUIET },
663 { "panic" , AV_LOG_PANIC },
664 { "fatal" , AV_LOG_FATAL },
665 { "error" , AV_LOG_ERROR },
666 { "warning", AV_LOG_WARNING },
667 { "info" , AV_LOG_INFO },
668 { "verbose", AV_LOG_VERBOSE },
669 { "debug" , AV_LOG_DEBUG },
670 };
671 char *tail;
672 int level;
673 int i;
674
675 for (i = 0; i < FF_ARRAY_ELEMS(log_levels); i++) {
676 if (!strcmp(log_levels[i].name, arg)) {
677 av_log_set_level(log_levels[i].level);
678 return 0;
679 }
680 }
681
682 level = strtol(arg, &tail, 10);
683 if (*tail) {
684 av_log(NULL, AV_LOG_FATAL, "Invalid loglevel \"%s\". "
685 "Possible levels are numbers or:\n", arg);
686 for (i = 0; i < FF_ARRAY_ELEMS(log_levels); i++)
687 av_log(NULL, AV_LOG_FATAL, "\"%s\"\n", log_levels[i].name);
688 exit(1);
689 }
690 av_log_set_level(level);
691 return 0;
692 }
693
694 int opt_timelimit(void *optctx, const char *opt, const char *arg)
695 {
696 #if HAVE_SETRLIMIT
697 int lim = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
698 struct rlimit rl = { lim, lim + 1 };
699 if (setrlimit(RLIMIT_CPU, &rl))
700 perror("setrlimit");
701 #else
702 av_log(NULL, AV_LOG_WARNING, "-%s not implemented on this OS\n", opt);
703 #endif
704 return 0;
705 }
706
707 void print_error(const char *filename, int err)
708 {
709 char errbuf[128];
710 const char *errbuf_ptr = errbuf;
711
712 if (av_strerror(err, errbuf, sizeof(errbuf)) < 0)
713 errbuf_ptr = strerror(AVUNERROR(err));
714 av_log(NULL, AV_LOG_ERROR, "%s: %s\n", filename, errbuf_ptr);
715 }
716
717 static int warned_cfg = 0;
718
719 #define INDENT 1
720 #define SHOW_VERSION 2
721 #define SHOW_CONFIG 4
722
723 #define PRINT_LIB_INFO(libname, LIBNAME, flags, level) \
724 if (CONFIG_##LIBNAME) { \
725 const char *indent = flags & INDENT? " " : ""; \
726 if (flags & SHOW_VERSION) { \
727 unsigned int version = libname##_version(); \
728 av_log(NULL, level, \
729 "%slib%-10s %2d.%3d.%2d / %2d.%3d.%2d\n", \
730 indent, #libname, \
731 LIB##LIBNAME##_VERSION_MAJOR, \
732 LIB##LIBNAME##_VERSION_MINOR, \
733 LIB##LIBNAME##_VERSION_MICRO, \
734 version >> 16, version >> 8 & 0xff, version & 0xff); \
735 } \
736 if (flags & SHOW_CONFIG) { \
737 const char *cfg = libname##_configuration(); \
738 if (strcmp(LIBAV_CONFIGURATION, cfg)) { \
739 if (!warned_cfg) { \
740 av_log(NULL, level, \
741 "%sWARNING: library configuration mismatch\n", \
742 indent); \
743 warned_cfg = 1; \
744 } \
745 av_log(NULL, level, "%s%-11s configuration: %s\n", \
746 indent, #libname, cfg); \
747 } \
748 } \
749 } \
750
751 static void print_all_libs_info(int flags, int level)
752 {
753 PRINT_LIB_INFO(avutil, AVUTIL, flags, level);
754 PRINT_LIB_INFO(avcodec, AVCODEC, flags, level);
755 PRINT_LIB_INFO(avformat, AVFORMAT, flags, level);
756 PRINT_LIB_INFO(avdevice, AVDEVICE, flags, level);
757 PRINT_LIB_INFO(avfilter, AVFILTER, flags, level);
758 PRINT_LIB_INFO(avresample, AVRESAMPLE, flags, level);
759 PRINT_LIB_INFO(swscale, SWSCALE, flags, level);
760 }
761
762 void show_banner(void)
763 {
764 av_log(NULL, AV_LOG_INFO,
765 "%s version " LIBAV_VERSION ", Copyright (c) %d-%d the Libav developers\n",
766 program_name, program_birth_year, this_year);
767 av_log(NULL, AV_LOG_INFO, " built on %s %s with %s\n",
768 __DATE__, __TIME__, CC_IDENT);
769 av_log(NULL, AV_LOG_VERBOSE, " configuration: " LIBAV_CONFIGURATION "\n");
770 print_all_libs_info(INDENT|SHOW_CONFIG, AV_LOG_VERBOSE);
771 print_all_libs_info(INDENT|SHOW_VERSION, AV_LOG_VERBOSE);
772 }
773
774 int show_version(void *optctx, const char *opt, const char *arg)
775 {
776 av_log_set_callback(log_callback_help);
777 printf("%s " LIBAV_VERSION "\n", program_name);
778 print_all_libs_info(SHOW_VERSION, AV_LOG_INFO);
779
780 return 0;
781 }
782
783 int show_license(void *optctx, const char *opt, const char *arg)
784 {
785 printf(
786 #if CONFIG_NONFREE
787 "This version of %s has nonfree parts compiled in.\n"
788 "Therefore it is not legally redistributable.\n",
789 program_name
790 #elif CONFIG_GPLV3
791 "%s is free software; you can redistribute it and/or modify\n"
792 "it under the terms of the GNU General Public License as published by\n"
793 "the Free Software Foundation; either version 3 of the License, or\n"
794 "(at your option) any later version.\n"
795 "\n"
796 "%s is distributed in the hope that it will be useful,\n"
797 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
798 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
799 "GNU General Public License for more details.\n"
800 "\n"
801 "You should have received a copy of the GNU General Public License\n"
802 "along with %s. If not, see <http://www.gnu.org/licenses/>.\n",
803 program_name, program_name, program_name
804 #elif CONFIG_GPL
805 "%s is free software; you can redistribute it and/or modify\n"
806 "it under the terms of the GNU General Public License as published by\n"
807 "the Free Software Foundation; either version 2 of the License, or\n"
808 "(at your option) any later version.\n"
809 "\n"
810 "%s is distributed in the hope that it will be useful,\n"
811 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
812 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
813 "GNU General Public License for more details.\n"
814 "\n"
815 "You should have received a copy of the GNU General Public License\n"
816 "along with %s; if not, write to the Free Software\n"
817 "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n",
818 program_name, program_name, program_name
819 #elif CONFIG_LGPLV3
820 "%s is free software; you can redistribute it and/or modify\n"
821 "it under the terms of the GNU Lesser General Public License as published by\n"
822 "the Free Software Foundation; either version 3 of the License, or\n"
823 "(at your option) any later version.\n"
824 "\n"
825 "%s is distributed in the hope that it will be useful,\n"
826 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
827 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
828 "GNU Lesser General Public License for more details.\n"
829 "\n"
830 "You should have received a copy of the GNU Lesser General Public License\n"
831 "along with %s. If not, see <http://www.gnu.org/licenses/>.\n",
832 program_name, program_name, program_name
833 #else
834 "%s is free software; you can redistribute it and/or\n"
835 "modify it under the terms of the GNU Lesser General Public\n"
836 "License as published by the Free Software Foundation; either\n"
837 "version 2.1 of the License, or (at your option) any later version.\n"
838 "\n"
839 "%s is distributed in the hope that it will be useful,\n"
840 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
841 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU\n"
842 "Lesser General Public License for more details.\n"
843 "\n"
844 "You should have received a copy of the GNU Lesser General Public\n"
845 "License along with %s; if not, write to the Free Software\n"
846 "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n",
847 program_name, program_name, program_name
848 #endif
849 );
850
851 return 0;
852 }
853
854 int show_formats(void *optctx, const char *opt, const char *arg)
855 {
856 AVInputFormat *ifmt = NULL;
857 AVOutputFormat *ofmt = NULL;
858 const char *last_name;
859
860 printf("File formats:\n"
861 " D. = Demuxing supported\n"
862 " .E = Muxing supported\n"
863 " --\n");
864 last_name = "000";
865 for (;;) {
866 int decode = 0;
867 int encode = 0;
868 const char *name = NULL;
869 const char *long_name = NULL;
870
871 while ((ofmt = av_oformat_next(ofmt))) {
872 if ((name == NULL || strcmp(ofmt->name, name) < 0) &&
873 strcmp(ofmt->name, last_name) > 0) {
874 name = ofmt->name;
875 long_name = ofmt->long_name;
876 encode = 1;
877 }
878 }
879 while ((ifmt = av_iformat_next(ifmt))) {
880 if ((name == NULL || strcmp(ifmt->name, name) < 0) &&
881 strcmp(ifmt->name, last_name) > 0) {
882 name = ifmt->name;
883 long_name = ifmt->long_name;
884 encode = 0;
885 }
886 if (name && strcmp(ifmt->name, name) == 0)
887 decode = 1;
888 }
889 if (name == NULL)
890 break;
891 last_name = name;
892
893 printf(" %s%s %-15s %s\n",
894 decode ? "D" : " ",
895 encode ? "E" : " ",
896 name,
897 long_name ? long_name:" ");
898 }
899 return 0;
900 }
901
902 #define PRINT_CODEC_SUPPORTED(codec, field, type, list_name, term, get_name) \
903 if (codec->field) { \
904 const type *p = c->field; \
905 \
906 printf(" Supported " list_name ":"); \
907 while (*p != term) { \
908 get_name(*p); \
909 printf(" %s", name); \
910 p++; \
911 } \
912 printf("\n"); \
913 } \
914
915 static void print_codec(const AVCodec *c)
916 {
917 int encoder = av_codec_is_encoder(c);
918
919 printf("%s %s [%s]:\n", encoder ? "Encoder" : "Decoder", c->name,
920 c->long_name ? c->long_name : "");
921
922 if (c->type == AVMEDIA_TYPE_VIDEO) {
923 printf(" Threading capabilities: ");
924 switch (c->capabilities & (CODEC_CAP_FRAME_THREADS |
925 CODEC_CAP_SLICE_THREADS)) {
926 case CODEC_CAP_FRAME_THREADS |
927 CODEC_CAP_SLICE_THREADS: printf("frame and slice"); break;
928 case CODEC_CAP_FRAME_THREADS: printf("frame"); break;
929 case CODEC_CAP_SLICE_THREADS: printf("slice"); break;
930 default: printf("no"); break;
931 }
932 printf("\n");
933 }
934
935 if (c->supported_framerates) {
936 const AVRational *fps = c->supported_framerates;
937
938 printf(" Supported framerates:");
939 while (fps->num) {
940 printf(" %d/%d", fps->num, fps->den);
941 fps++;
942 }
943 printf("\n");
944 }
945 PRINT_CODEC_SUPPORTED(c, pix_fmts, enum AVPixelFormat, "pixel formats",
946 AV_PIX_FMT_NONE, GET_PIX_FMT_NAME);
947 PRINT_CODEC_SUPPORTED(c, supported_samplerates, int, "sample rates", 0,
948 GET_SAMPLE_RATE_NAME);
949 PRINT_CODEC_SUPPORTED(c, sample_fmts, enum AVSampleFormat, "sample formats",
950 AV_SAMPLE_FMT_NONE, GET_SAMPLE_FMT_NAME);
951 PRINT_CODEC_SUPPORTED(c, channel_layouts, uint64_t, "channel layouts",
952 0, GET_CH_LAYOUT_DESC);
953
954 if (c->priv_class) {
955 show_help_children(c->priv_class,
956 AV_OPT_FLAG_ENCODING_PARAM |
957 AV_OPT_FLAG_DECODING_PARAM);
958 }
959 }
960
961 static char get_media_type_char(enum AVMediaType type)
962 {
963 switch (type) {
964 case AVMEDIA_TYPE_VIDEO: return 'V';
965 case AVMEDIA_TYPE_AUDIO: return 'A';
966 case AVMEDIA_TYPE_SUBTITLE: return 'S';
967 default: return '?';
968 }
969 }
970
971 static const AVCodec *next_codec_for_id(enum AVCodecID id, const AVCodec *prev,
972 int encoder)
973 {
974 while ((prev = av_codec_next(prev))) {
975 if (prev->id == id &&
976 (encoder ? av_codec_is_encoder(prev) : av_codec_is_decoder(prev)))
977 return prev;
978 }
979 return NULL;
980 }
981
982 static void print_codecs_for_id(enum AVCodecID id, int encoder)
983 {
984 const AVCodec *codec = NULL;
985
986 printf(" (%s: ", encoder ? "encoders" : "decoders");
987
988 while ((codec = next_codec_for_id(id, codec, encoder)))
989 printf("%s ", codec->name);
990
991 printf(")");
992 }
993
994 int show_codecs(void *optctx, const char *opt, const char *arg)
995 {
996 const AVCodecDescriptor *desc = NULL;
997
998 printf("Codecs:\n"
999 " D..... = Decoding supported\n"
1000 " .E.... = Encoding supported\n"
1001 " ..V... = Video codec\n"
1002 " ..A... = Audio codec\n"
1003 " ..S... = Subtitle codec\n"
1004 " ...I.. = Intra frame-only codec\n"
1005 " ....L. = Lossy compression\n"
1006 " .....S = Lossless compression\n"
1007 " -------\n");
1008 while ((desc = avcodec_descriptor_next(desc))) {
1009 const AVCodec *codec = NULL;
1010
1011 printf(avcodec_find_decoder(desc->id) ? "D" : ".");
1012 printf(avcodec_find_encoder(desc->id) ? "E" : ".");
1013
1014 printf("%c", get_media_type_char(desc->type));
1015 printf((desc->props & AV_CODEC_PROP_INTRA_ONLY) ? "I" : ".");
1016 printf((desc->props & AV_CODEC_PROP_LOSSY) ? "L" : ".");
1017 printf((desc->props & AV_CODEC_PROP_LOSSLESS) ? "S" : ".");
1018
1019 printf(" %-20s %s", desc->name, desc->long_name ? desc->long_name : "");
1020
1021 /* print decoders/encoders when there's more than one or their
1022 * names are different from codec name */
1023 while ((codec = next_codec_for_id(desc->id, codec, 0))) {
1024 if (strcmp(codec->name, desc->name)) {
1025 print_codecs_for_id(desc->id, 0);
1026 break;
1027 }
1028 }
1029 codec = NULL;
1030 while ((codec = next_codec_for_id(desc->id, codec, 1))) {
1031 if (strcmp(codec->name, desc->name)) {
1032 print_codecs_for_id(desc->id, 1);
1033 break;
1034 }
1035 }
1036
1037 printf("\n");
1038 }
1039 return 0;
1040 }
1041
1042 static void print_codecs(int encoder)
1043 {
1044 const AVCodecDescriptor *desc = NULL;
1045
1046 printf("%s:\n"
1047 " V... = Video\n"
1048 " A... = Audio\n"
1049 " S... = Subtitle\n"
1050 " .F.. = Frame-level multithreading\n"
1051 " ..S. = Slice-level multithreading\n"
1052 " ...X = Codec is experimental\n"
1053 " ---\n",
1054 encoder ? "Encoders" : "Decoders");
1055 while ((desc = avcodec_descriptor_next(desc))) {
1056 const AVCodec *codec = NULL;
1057
1058 while ((codec = next_codec_for_id(desc->id, codec, encoder))) {
1059 printf("%c", get_media_type_char(desc->type));
1060 printf((codec->capabilities & CODEC_CAP_FRAME_THREADS) ? "F" : ".");
1061 printf((codec->capabilities & CODEC_CAP_SLICE_THREADS) ? "S" : ".");
1062 printf((codec->capabilities & CODEC_CAP_EXPERIMENTAL) ? "X" : ".");
1063
1064 printf(" %-20s %s", codec->name, codec->long_name ? codec->long_name : "");
1065 if (strcmp(codec->name, desc->name))
1066 printf(" (codec %s)", desc->name);
1067
1068 printf("\n");
1069 }
1070 }
1071 }
1072
1073 int show_decoders(void *optctx, const char *opt, const char *arg)
1074 {
1075 print_codecs(0);
1076 return 0;
1077 }
1078
1079 int show_encoders(void *optctx, const char *opt, const char *arg)
1080 {
1081 print_codecs(1);
1082 return 0;
1083 }
1084
1085 int show_bsfs(void *optctx, const char *opt, const char *arg)
1086 {
1087 AVBitStreamFilter *bsf = NULL;
1088
1089 printf("Bitstream filters:\n");
1090 while ((bsf = av_bitstream_filter_next(bsf)))
1091 printf("%s\n", bsf->name);
1092 printf("\n");
1093 return 0;
1094 }
1095
1096 int show_protocols(void *optctx, const char *opt, const char *arg)
1097 {
1098 void *opaque = NULL;
1099 const char *name;
1100
1101 printf("Supported file protocols:\n"
1102 "Input:\n");
1103 while ((name = avio_enum_protocols(&opaque, 0)))
1104 printf("%s\n", name);
1105 printf("Output:\n");
1106 while ((name = avio_enum_protocols(&opaque, 1)))
1107 printf("%s\n", name);
1108 return 0;
1109 }
1110
1111 int show_filters(void *optctx, const char *opt, const char *arg)
1112 {
1113 AVFilter av_unused(**filter) = NULL;
1114
1115 printf("Filters:\n");
1116 #if CONFIG_AVFILTER
1117 while ((filter = av_filter_next(filter)) && *filter)
1118 printf("%-16s %s\n", (*filter)->name, (*filter)->description);
1119 #endif
1120 return 0;
1121 }
1122
1123 int show_pix_fmts(void *optctx, const char *opt, const char *arg)
1124 {
1125 const AVPixFmtDescriptor *pix_desc = NULL;
1126
1127 printf("Pixel formats:\n"
1128 "I.... = Supported Input format for conversion\n"
1129 ".O... = Supported Output format for conversion\n"
1130 "..H.. = Hardware accelerated format\n"
1131 "...P. = Paletted format\n"
1132 "....B = Bitstream format\n"
1133 "FLAGS NAME NB_COMPONENTS BITS_PER_PIXEL\n"
1134 "-----\n");
1135
1136 #if !CONFIG_SWSCALE
1137 # define sws_isSupportedInput(x) 0
1138 # define sws_isSupportedOutput(x) 0
1139 #endif
1140
1141 while ((pix_desc = av_pix_fmt_desc_next(pix_desc))) {
1142 enum AVPixelFormat pix_fmt = av_pix_fmt_desc_get_id(pix_desc);
1143 printf("%c%c%c%c%c %-16s %d %2d\n",
1144 sws_isSupportedInput (pix_fmt) ? 'I' : '.',
1145 sws_isSupportedOutput(pix_fmt) ? 'O' : '.',
1146 pix_desc->flags & PIX_FMT_HWACCEL ? 'H' : '.',
1147 pix_desc->flags & PIX_FMT_PAL ? 'P' : '.',
1148 pix_desc->flags & PIX_FMT_BITSTREAM ? 'B' : '.',
1149 pix_desc->name,
1150 pix_desc->nb_components,
1151 av_get_bits_per_pixel(pix_desc));
1152 }
1153 return 0;
1154 }
1155
1156 int show_sample_fmts(void *optctx, const char *opt, const char *arg)
1157 {
1158 int i;
1159 char fmt_str[128];
1160 for (i = -1; i < AV_SAMPLE_FMT_NB; i++)
1161 printf("%s\n", av_get_sample_fmt_string(fmt_str, sizeof(fmt_str), i));
1162 return 0;
1163 }
1164
1165 static void show_help_codec(const char *name, int encoder)
1166 {
1167 const AVCodecDescriptor *desc;
1168 const AVCodec *codec;
1169
1170 if (!name) {
1171 av_log(NULL, AV_LOG_ERROR, "No codec name specified.\n");
1172 return;
1173 }
1174
1175 codec = encoder ? avcodec_find_encoder_by_name(name) :
1176 avcodec_find_decoder_by_name(name);
1177
1178 if (codec)
1179 print_codec(codec);
1180 else if ((desc = avcodec_descriptor_get_by_name(name))) {
1181 int printed = 0;
1182
1183 while ((codec = next_codec_for_id(desc->id, codec, encoder))) {
1184 printed = 1;
1185 print_codec(codec);
1186 }
1187
1188 if (!printed) {
1189 av_log(NULL, AV_LOG_ERROR, "Codec '%s' is known to Libav, "
1190 "but no %s for it are available. Libav might need to be "
1191 "recompiled with additional external libraries.\n",
1192 name, encoder ? "encoders" : "decoders");
1193 }
1194 } else {
1195 av_log(NULL, AV_LOG_ERROR, "Codec '%s' is not recognized by Libav.\n",
1196 name);
1197 }
1198 }
1199
1200 static void show_help_demuxer(const char *name)
1201 {
1202 const AVInputFormat *fmt = av_find_input_format(name);
1203
1204 if (!fmt) {
1205 av_log(NULL, AV_LOG_ERROR, "Unknown format '%s'.\n", name);
1206 return;
1207 }
1208
1209 printf("Demuxer %s [%s]:\n", fmt->name, fmt->long_name);
1210
1211 if (fmt->extensions)
1212 printf(" Common extensions: %s.\n", fmt->extensions);
1213
1214 if (fmt->priv_class)
1215 show_help_children(fmt->priv_class, AV_OPT_FLAG_DECODING_PARAM);
1216 }
1217
1218 static void show_help_muxer(const char *name)
1219 {
1220 const AVCodecDescriptor *desc;
1221 const AVOutputFormat *fmt = av_guess_format(name, NULL, NULL);
1222
1223 if (!fmt) {
1224 av_log(NULL, AV_LOG_ERROR, "Unknown format '%s'.\n", name);
1225 return;
1226 }
1227
1228 printf("Muxer %s [%s]:\n", fmt->name, fmt->long_name);
1229
1230 if (fmt->extensions)
1231 printf(" Common extensions: %s.\n", fmt->extensions);
1232 if (fmt->mime_type)
1233 printf(" Mime type: %s.\n", fmt->mime_type);
1234 if (fmt->video_codec != AV_CODEC_ID_NONE &&
1235 (desc = avcodec_descriptor_get(fmt->video_codec))) {
1236 printf(" Default video codec: %s.\n", desc->name);
1237 }
1238 if (fmt->audio_codec != AV_CODEC_ID_NONE &&
1239 (desc = avcodec_descriptor_get(fmt->audio_codec))) {
1240 printf(" Default audio codec: %s.\n", desc->name);
1241 }
1242 if (fmt->subtitle_codec != AV_CODEC_ID_NONE &&
1243 (desc = avcodec_descriptor_get(fmt->subtitle_codec))) {
1244 printf(" Default subtitle codec: %s.\n", desc->name);
1245 }
1246
1247 if (fmt->priv_class)
1248 show_help_children(fmt->priv_class, AV_OPT_FLAG_ENCODING_PARAM);
1249 }
1250
1251 int show_help(void *optctx, const char *opt, const char *arg)
1252 {
1253 char *topic, *par;
1254 av_log_set_callback(log_callback_help);
1255
1256 topic = av_strdup(arg ? arg : "");
1257 par = strchr(topic, '=');
1258 if (par)
1259 *par++ = 0;
1260
1261 if (!*topic) {
1262 show_help_default(topic, par);
1263 } else if (!strcmp(topic, "decoder")) {
1264 show_help_codec(par, 0);
1265 } else if (!strcmp(topic, "encoder")) {
1266 show_help_codec(par, 1);
1267 } else if (!strcmp(topic, "demuxer")) {
1268 show_help_demuxer(par);
1269 } else if (!strcmp(topic, "muxer")) {
1270 show_help_muxer(par);
1271 } else {
1272 show_help_default(topic, par);
1273 }
1274
1275 av_freep(&topic);
1276 return 0;
1277 }
1278
1279 int read_yesno(void)
1280 {
1281 int c = getchar();
1282 int yesno = (toupper(c) == 'Y');
1283
1284 while (c != '\n' && c != EOF)
1285 c = getchar();
1286
1287 return yesno;
1288 }
1289
1290 int cmdutils_read_file(const char *filename, char **bufptr, size_t *size)
1291 {
1292 int ret;
1293 FILE *f = fopen(filename, "rb");
1294
1295 if (!f) {
1296 av_log(NULL, AV_LOG_ERROR, "Cannot read file '%s': %s\n", filename,
1297 strerror(errno));
1298 return AVERROR(errno);
1299 }
1300 fseek(f, 0, SEEK_END);
1301 *size = ftell(f);
1302 fseek(f, 0, SEEK_SET);
1303 *bufptr = av_malloc(*size + 1);
1304 if (!*bufptr) {
1305 av_log(NULL, AV_LOG_ERROR, "Could not allocate file buffer\n");
1306 fclose(f);
1307 return AVERROR(ENOMEM);
1308 }
1309 ret = fread(*bufptr, 1, *size, f);
1310 if (ret < *size) {
1311 av_free(*bufptr);
1312 if (ferror(f)) {
1313 av_log(NULL, AV_LOG_ERROR, "Error while reading file '%s': %s\n",
1314 filename, strerror(errno));
1315 ret = AVERROR(errno);
1316 } else
1317 ret = AVERROR_EOF;
1318 } else {
1319 ret = 0;
1320 (*bufptr)[(*size)++] = '\0';
1321 }
1322
1323 fclose(f);
1324 return ret;
1325 }
1326
1327 void init_pts_correction(PtsCorrectionContext *ctx)
1328 {
1329 ctx->num_faulty_pts = ctx->num_faulty_dts = 0;
1330 ctx->last_pts = ctx->last_dts = INT64_MIN;
1331 }
1332
1333 int64_t guess_correct_pts(PtsCorrectionContext *ctx, int64_t reordered_pts,
1334 int64_t dts)
1335 {
1336 int64_t pts = AV_NOPTS_VALUE;
1337
1338 if (dts != AV_NOPTS_VALUE) {
1339 ctx->num_faulty_dts += dts <= ctx->last_dts;
1340 ctx->last_dts = dts;
1341 }
1342 if (reordered_pts != AV_NOPTS_VALUE) {
1343 ctx->num_faulty_pts += reordered_pts <= ctx->last_pts;
1344 ctx->last_pts = reordered_pts;
1345 }
1346 if ((ctx->num_faulty_pts<=ctx->num_faulty_dts || dts == AV_NOPTS_VALUE)
1347 && reordered_pts != AV_NOPTS_VALUE)
1348 pts = reordered_pts;
1349 else
1350 pts = dts;
1351
1352 return pts;
1353 }
1354
1355 FILE *get_preset_file(char *filename, size_t filename_size,
1356 const char *preset_name, int is_path,
1357 const char *codec_name)
1358 {
1359 FILE *f = NULL;
1360 int i;
1361 const char *base[3] = { getenv("AVCONV_DATADIR"),
1362 getenv("HOME"),
1363 AVCONV_DATADIR, };
1364
1365 if (is_path) {
1366 av_strlcpy(filename, preset_name, filename_size);
1367 f = fopen(filename, "r");
1368 } else {
1369 for (i = 0; i < 3 && !f; i++) {
1370 if (!base[i])
1371 continue;
1372 snprintf(filename, filename_size, "%s%s/%s.avpreset", base[i],
1373 i != 1 ? "" : "/.avconv", preset_name);
1374 f = fopen(filename, "r");
1375 if (!f && codec_name) {
1376 snprintf(filename, filename_size,
1377 "%s%s/%s-%s.avpreset",
1378 base[i], i != 1 ? "" : "/.avconv", codec_name,
1379 preset_name);
1380 f = fopen(filename, "r");
1381 }
1382 }
1383 }
1384
1385 return f;
1386 }
1387
1388 int check_stream_specifier(AVFormatContext *s, AVStream *st, const char *spec)
1389 {
1390 if (*spec <= '9' && *spec >= '0') /* opt:index */
1391 return strtol(spec, NULL, 0) == st->index;
1392 else if (*spec == 'v' || *spec == 'a' || *spec == 's' || *spec == 'd' ||
1393 *spec == 't') { /* opt:[vasdt] */
1394 enum AVMediaType type;
1395
1396 switch (*spec++) {
1397 case 'v': type = AVMEDIA_TYPE_VIDEO; break;
1398 case 'a': type = AVMEDIA_TYPE_AUDIO; break;
1399 case 's': type = AVMEDIA_TYPE_SUBTITLE; break;
1400 case 'd': type = AVMEDIA_TYPE_DATA; break;
1401 case 't': type = AVMEDIA_TYPE_ATTACHMENT; break;
1402 default: av_assert0(0);
1403 }
1404 if (type != st->codec->codec_type)
1405 return 0;
1406 if (*spec++ == ':') { /* possibly followed by :index */
1407 int i, index = strtol(spec, NULL, 0);
1408 for (i = 0; i < s->nb_streams; i++)
1409 if (s->streams[i]->codec->codec_type == type && index-- == 0)
1410 return i == st->index;
1411 return 0;
1412 }
1413 return 1;
1414 } else if (*spec == 'p' && *(spec + 1) == ':') {
1415 int prog_id, i, j;
1416 char *endptr;
1417 spec += 2;
1418 prog_id = strtol(spec, &endptr, 0);
1419 for (i = 0; i < s->nb_programs; i++) {
1420 if (s->programs[i]->id != prog_id)
1421 continue;
1422
1423 if (*endptr++ == ':') {
1424 int stream_idx = strtol(endptr, NULL, 0);
1425 return stream_idx >= 0 &&
1426 stream_idx < s->programs[i]->nb_stream_indexes &&
1427 st->index == s->programs[i]->stream_index[stream_idx];
1428 }
1429
1430 for (j = 0; j < s->programs[i]->nb_stream_indexes; j++)
1431 if (st->index == s->programs[i]->stream_index[j])
1432 return 1;
1433 }
1434 return 0;
1435 } else if (!*spec) /* empty specifier, matches everything */
1436 return 1;
1437
1438 av_log(s, AV_LOG_ERROR, "Invalid stream specifier: %s.\n", spec);
1439 return AVERROR(EINVAL);
1440 }
1441
1442 AVDictionary *filter_codec_opts(AVDictionary *opts, enum AVCodecID codec_id,
1443 AVFormatContext *s, AVStream *st, AVCodec *codec)
1444 {
1445 AVDictionary *ret = NULL;
1446 AVDictionaryEntry *t = NULL;
1447 int flags = s->oformat ? AV_OPT_FLAG_ENCODING_PARAM
1448 : AV_OPT_FLAG_DECODING_PARAM;
1449 char prefix = 0;
1450 const AVClass *cc = avcodec_get_class();
1451
1452 if (!codec)
1453 codec = s->oformat ? avcodec_find_encoder(codec_id)
1454 : avcodec_find_decoder(codec_id);
1455 if (!codec)
1456 return NULL;
1457
1458 switch (codec->type) {
1459 case AVMEDIA_TYPE_VIDEO:
1460 prefix = 'v';
1461 flags |= AV_OPT_FLAG_VIDEO_PARAM;
1462 break;
1463 case AVMEDIA_TYPE_AUDIO:
1464 prefix = 'a';
1465 flags |= AV_OPT_FLAG_AUDIO_PARAM;
1466 break;
1467 case AVMEDIA_TYPE_SUBTITLE:
1468 prefix = 's';
1469 flags |= AV_OPT_FLAG_SUBTITLE_PARAM;
1470 break;
1471 }
1472
1473 while (t = av_dict_get(opts, "", t, AV_DICT_IGNORE_SUFFIX)) {
1474 char *p = strchr(t->key, ':');
1475
1476 /* check stream specification in opt name */
1477 if (p)
1478 switch (check_stream_specifier(s, st, p + 1)) {
1479 case 1: *p = 0; break;
1480 case 0: continue;
1481 default: return NULL;
1482 }
1483
1484 if (av_opt_find(&cc, t->key, NULL, flags, AV_OPT_SEARCH_FAKE_OBJ) ||
1485 (codec && codec->priv_class &&
1486 av_opt_find(&codec->priv_class, t->key, NULL, flags,
1487 AV_OPT_SEARCH_FAKE_OBJ)))
1488 av_dict_set(&ret, t->key, t->value, 0);
1489 else if (t->key[0] == prefix &&
1490 av_opt_find(&cc, t->key + 1, NULL, flags,
1491 AV_OPT_SEARCH_FAKE_OBJ))
1492 av_dict_set(&ret, t->key + 1, t->value, 0);
1493
1494 if (p)
1495 *p = ':';
1496 }
1497 return ret;
1498 }
1499
1500 AVDictionary **setup_find_stream_info_opts(AVFormatContext *s,
1501 AVDictionary *codec_opts)
1502 {
1503 int i;
1504 AVDictionary **opts;
1505
1506 if (!s->nb_streams)
1507 return NULL;
1508 opts = av_mallocz(s->nb_streams * sizeof(*opts));
1509 if (!opts) {
1510 av_log(NULL, AV_LOG_ERROR,
1511 "Could not alloc memory for stream options.\n");
1512 return NULL;
1513 }
1514 for (i = 0; i < s->nb_streams; i++)
1515 opts[i] = filter_codec_opts(codec_opts, s->streams[i]->codec->codec_id,
1516 s, s->streams[i], NULL);
1517 return opts;
1518 }
1519
1520 void *grow_array(void *array, int elem_size, int *size, int new_size)
1521 {
1522 if (new_size >= INT_MAX / elem_size) {
1523 av_log(NULL, AV_LOG_ERROR, "Array too big.\n");
1524 exit(1);
1525 }
1526 if (*size < new_size) {
1527 uint8_t *tmp = av_realloc(array, new_size*elem_size);
1528 if (!tmp) {
1529 av_log(NULL, AV_LOG_ERROR, "Could not alloc buffer.\n");
1530 exit(1);
1531 }
1532 memset(tmp + *size*elem_size, 0, (new_size-*size) * elem_size);
1533 *size = new_size;
1534 return tmp;
1535 }
1536 return array;
1537 }
1538
1539 static int alloc_buffer(FrameBuffer **pool, AVCodecContext *s, FrameBuffer **pbuf)
1540 {
1541 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->pix_fmt);
1542 FrameBuffer *buf;
1543 int i, ret;
1544 int pixel_size;
1545 int h_chroma_shift, v_chroma_shift;
1546 int edge = 32; // XXX should be avcodec_get_edge_width(), but that fails on svq1
1547 int w = s->width, h = s->height;
1548
1549 if (!desc)
1550 return AVERROR(EINVAL);
1551 pixel_size = desc->comp[0].step_minus1 + 1;
1552
1553 buf = av_mallocz(sizeof(*buf));
1554 if (!buf)
1555 return AVERROR(ENOMEM);
1556
1557 if (!(s->flags & CODEC_FLAG_EMU_EDGE)) {
1558 w += 2*edge;
1559 h += 2*edge;
1560 }
1561
1562 avcodec_align_dimensions(s, &w, &h);
1563 if ((ret = av_image_alloc(buf->base, buf->linesize, w, h,
1564 s->pix_fmt, 32)) < 0) {
1565 av_freep(&buf);
1566 return ret;
1567 }
1568 /* XXX this shouldn't be needed, but some tests break without this line
1569 * those decoders are buggy and need to be fixed.
1570 * the following tests fail:
1571 * cdgraphics, ansi, aasc, fraps-v1, qtrle-1bit
1572 */
1573 memset(buf->base[0], 128, ret);
1574
1575 av_pix_fmt_get_chroma_sub_sample(s->pix_fmt,
1576 &h_chroma_shift, &v_chroma_shift);
1577
1578 for (i = 0; i < FF_ARRAY_ELEMS(buf->data); i++) {
1579 const int h_shift = i==0 ? 0 : h_chroma_shift;
1580 const int v_shift = i==0 ? 0 : v_chroma_shift;
1581 if (s->flags & CODEC_FLAG_EMU_EDGE)
1582 buf->data[i] = buf->base[i];
1583 else if (buf->base[i])
1584 buf->data[i] = buf->base[i] +
1585 FFALIGN((buf->linesize[i]*edge >> v_shift) +
1586 (pixel_size*edge >> h_shift), 32);
1587 }
1588 buf->w = s->width;
1589 buf->h = s->height;
1590 buf->pix_fmt = s->pix_fmt;
1591 buf->pool = pool;
1592
1593 *pbuf = buf;
1594 return 0;
1595 }
1596
1597 int codec_get_buffer(AVCodecContext *s, AVFrame *frame)
1598 {
1599 FrameBuffer **pool = s->opaque;
1600 FrameBuffer *buf;
1601 int ret, i;
1602
1603 if (!*pool && (ret = alloc_buffer(pool, s, pool)) < 0)
1604 return ret;
1605
1606 buf = *pool;
1607 *pool = buf->next;
1608 buf->next = NULL;
1609 if (buf->w != s->width || buf->h != s->height || buf->pix_fmt != s->pix_fmt) {
1610 av_freep(&buf->base[0]);
1611 av_free(buf);
1612 if ((ret = alloc_buffer(pool, s, &buf)) < 0)
1613 return ret;
1614 }
1615 buf->refcount++;
1616
1617 frame->opaque = buf;
1618 frame->type = FF_BUFFER_TYPE_USER;
1619 frame->extended_data = frame->data;
1620
1621 for (i = 0; i < FF_ARRAY_ELEMS(buf->data); i++) {
1622 frame->base[i] = buf->base[i]; // XXX h264.c uses base though it shouldn't
1623 frame->data[i] = buf->data[i];
1624 frame->linesize[i] = buf->linesize[i];
1625 }
1626
1627 return 0;
1628 }
1629
1630 static void unref_buffer(FrameBuffer *buf)
1631 {
1632 FrameBuffer **pool = buf->pool;
1633
1634 av_assert0(buf->refcount);
1635 buf->refcount--;
1636 if (!buf->refcount) {
1637 buf->next = *pool;
1638 *pool = buf;
1639 }
1640 }
1641
1642 void codec_release_buffer(AVCodecContext *s, AVFrame *frame)
1643 {
1644 FrameBuffer *buf = frame->opaque;
1645 int i;
1646
1647 for (i = 0; i < FF_ARRAY_ELEMS(frame->data); i++)
1648 frame->data[i] = NULL;
1649
1650 unref_buffer(buf);
1651 }
1652
1653 void filter_release_buffer(AVFilterBuffer *fb)
1654 {
1655 FrameBuffer *buf = fb->priv;
1656 av_free(fb);
1657 unref_buffer(buf);
1658 }
1659
1660 void free_buffer_pool(FrameBuffer **pool)
1661 {
1662 FrameBuffer *buf = *pool;
1663 while (buf) {
1664 *pool = buf->next;
1665 av_freep(&buf->base[0]);
1666 av_free(buf);
1667 buf = *pool;
1668 }
1669 }