2 * Various utilities for command line tools
3 * Copyright (c) 2000-2003 Fabrice Bellard
5 * This file is part of Libav.
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.
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.
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
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. */
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"
49 #include "libavformat/network.h"
51 #if HAVE_SYS_RESOURCE_H
53 #include <sys/resource.h>
56 struct SwsContext *sws_opts;
57 AVDictionary *format_opts, *codec_opts, *resample_opts;
59 static const int this_year = 2013;
64 sws_opts = sws_getContext(16, 16, 0, 16, 16, 0, SWS_BICUBIC,
69 void uninit_opts(void)
72 sws_freeContext(sws_opts);
75 av_dict_free(&format_opts);
76 av_dict_free(&codec_opts);
77 av_dict_free(&resample_opts);
80 void log_callback_help(void *ptr, int level, const char *fmt, va_list vl)
82 vfprintf(stdout, fmt, vl);
85 static void (*program_exit)(int ret);
87 void register_exit(void (*cb)(int ret))
92 void exit_program(int ret)
100 double parse_number_or_die(const char *context, const char *numstr, int type,
101 double min, double max)
105 double d = av_strtod(numstr, &tail);
107 error = "Expected number for %s but found: %s\n";
108 else if (d < min || d > max)
109 error = "The value for %s was %s which is not within %f - %f\n";
110 else if (type == OPT_INT64 && (int64_t)d != d)
111 error = "Expected int64 for %s but found %s\n";
112 else if (type == OPT_INT && (int)d != d)
113 error = "Expected int for %s but found %s\n";
116 av_log(NULL, AV_LOG_FATAL, error, context, numstr, min, max);
121 int64_t parse_time_or_die(const char *context, const char *timestr,
125 if (av_parse_time(&us, timestr, is_duration) < 0) {
126 av_log(NULL, AV_LOG_FATAL, "Invalid %s specification for %s: %s\n",
127 is_duration ? "duration" : "date", context, timestr);
133 void show_help_options(const OptionDef *options, const char *msg, int req_flags,
134 int rej_flags, int alt_flags)
140 for (po = options; po->name != NULL; po++) {
143 if (((po->flags & req_flags) != req_flags) ||
144 (alt_flags && !(po->flags & alt_flags)) ||
145 (po->flags & rej_flags))
152 av_strlcpy(buf, po->name, sizeof(buf));
154 av_strlcat(buf, " ", sizeof(buf));
155 av_strlcat(buf, po->argname, sizeof(buf));
157 printf("-%-17s %s\n", buf, po->help);
162 void show_help_children(const AVClass *class, int flags)
164 const AVClass *child = NULL;
165 av_opt_show2(&class, NULL, flags, 0);
168 while (child = av_opt_child_class_next(class, child))
169 show_help_children(child, flags);
172 static const OptionDef *find_option(const OptionDef *po, const char *name)
174 const char *p = strchr(name, ':');
175 int len = p ? p - name : strlen(name);
177 while (po->name != NULL) {
178 if (!strncmp(name, po->name, len) && strlen(po->name) == len)
185 #if HAVE_COMMANDLINETOARGVW
187 #include <shellapi.h>
188 /* Will be leaked on exit */
189 static char** win32_argv_utf8 = NULL;
190 static int win32_argc = 0;
193 * Prepare command line arguments for executable.
194 * For Windows - perform wide-char to UTF-8 conversion.
195 * Input arguments should be main() function arguments.
196 * @param argc_ptr Arguments number (including executable)
197 * @param argv_ptr Arguments list.
199 static void prepare_app_arguments(int *argc_ptr, char ***argv_ptr)
203 int i, buffsize = 0, offset = 0;
205 if (win32_argv_utf8) {
206 *argc_ptr = win32_argc;
207 *argv_ptr = win32_argv_utf8;
212 argv_w = CommandLineToArgvW(GetCommandLineW(), &win32_argc);
213 if (win32_argc <= 0 || !argv_w)
216 /* determine the UTF-8 buffer size (including NULL-termination symbols) */
217 for (i = 0; i < win32_argc; i++)
218 buffsize += WideCharToMultiByte(CP_UTF8, 0, argv_w[i], -1,
219 NULL, 0, NULL, NULL);
221 win32_argv_utf8 = av_mallocz(sizeof(char *) * (win32_argc + 1) + buffsize);
222 argstr_flat = (char *)win32_argv_utf8 + sizeof(char *) * (win32_argc + 1);
223 if (win32_argv_utf8 == NULL) {
228 for (i = 0; i < win32_argc; i++) {
229 win32_argv_utf8[i] = &argstr_flat[offset];
230 offset += WideCharToMultiByte(CP_UTF8, 0, argv_w[i], -1,
231 &argstr_flat[offset],
232 buffsize - offset, NULL, NULL);
234 win32_argv_utf8[i] = NULL;
237 *argc_ptr = win32_argc;
238 *argv_ptr = win32_argv_utf8;
241 static inline void prepare_app_arguments(int *argc_ptr, char ***argv_ptr)
245 #endif /* HAVE_COMMANDLINETOARGVW */
247 static int write_option(void *optctx, const OptionDef *po, const char *opt,
250 /* new-style options contain an offset into optctx, old-style address of
252 void *dst = po->flags & (OPT_OFFSET | OPT_SPEC) ?
253 (uint8_t *)optctx + po->u.off : po->u.dst_ptr;
256 if (po->flags & OPT_SPEC) {
257 SpecifierOpt **so = dst;
258 char *p = strchr(opt, ':');
260 dstcount = (int *)(so + 1);
261 *so = grow_array(*so, sizeof(**so), dstcount, *dstcount + 1);
262 (*so)[*dstcount - 1].specifier = av_strdup(p ? p + 1 : "");
263 dst = &(*so)[*dstcount - 1].u;
266 if (po->flags & OPT_STRING) {
268 str = av_strdup(arg);
271 } else if (po->flags & OPT_BOOL || po->flags & OPT_INT) {
272 *(int *)dst = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
273 } else if (po->flags & OPT_INT64) {
274 *(int64_t *)dst = parse_number_or_die(opt, arg, OPT_INT64, INT64_MIN, INT64_MAX);
275 } else if (po->flags & OPT_TIME) {
276 *(int64_t *)dst = parse_time_or_die(opt, arg, 1);
277 } else if (po->flags & OPT_FLOAT) {
278 *(float *)dst = parse_number_or_die(opt, arg, OPT_FLOAT, -INFINITY, INFINITY);
279 } else if (po->flags & OPT_DOUBLE) {
280 *(double *)dst = parse_number_or_die(opt, arg, OPT_DOUBLE, -INFINITY, INFINITY);
281 } else if (po->u.func_arg) {
282 int ret = po->u.func_arg(optctx, opt, arg);
284 av_log(NULL, AV_LOG_ERROR,
285 "Failed to set value '%s' for option '%s'\n", arg, opt);
289 if (po->flags & OPT_EXIT)
295 int parse_option(void *optctx, const char *opt, const char *arg,
296 const OptionDef *options)
301 po = find_option(options, opt);
302 if (!po->name && opt[0] == 'n' && opt[1] == 'o') {
303 /* handle 'no' bool option */
304 po = find_option(options, opt + 2);
305 if ((po->name && (po->flags & OPT_BOOL)))
307 } else if (po->flags & OPT_BOOL)
311 po = find_option(options, "default");
313 av_log(NULL, AV_LOG_ERROR, "Unrecognized option '%s'\n", opt);
314 return AVERROR(EINVAL);
316 if (po->flags & HAS_ARG && !arg) {
317 av_log(NULL, AV_LOG_ERROR, "Missing argument for option '%s'\n", opt);
318 return AVERROR(EINVAL);
321 ret = write_option(optctx, po, opt, arg);
325 return !!(po->flags & HAS_ARG);
328 void parse_options(void *optctx, int argc, char **argv, const OptionDef *options,
329 void (*parse_arg_function)(void *, const char*))
332 int optindex, handleoptions = 1, ret;
334 /* perform system-dependent conversions for arguments list */
335 prepare_app_arguments(&argc, &argv);
339 while (optindex < argc) {
340 opt = argv[optindex++];
342 if (handleoptions && opt[0] == '-' && opt[1] != '\0') {
343 if (opt[1] == '-' && opt[2] == '\0') {
349 if ((ret = parse_option(optctx, opt, argv[optindex], options)) < 0)
353 if (parse_arg_function)
354 parse_arg_function(optctx, opt);
359 int parse_optgroup(void *optctx, OptionGroup *g)
363 av_log(NULL, AV_LOG_DEBUG, "Parsing a group of options: %s %s.\n",
364 g->group_def->name, g->arg);
366 for (i = 0; i < g->nb_opts; i++) {
367 Option *o = &g->opts[i];
369 if (g->group_def->flags &&
370 !(g->group_def->flags & o->opt->flags)) {
371 av_log(NULL, AV_LOG_ERROR, "Option %s (%s) cannot be applied to "
372 "%s %s -- you are trying to apply an input option to an "
373 "output file or vice versa. Move this option before the "
374 "file it belongs to.\n", o->key, o->opt->help,
375 g->group_def->name, g->arg);
376 return AVERROR(EINVAL);
379 av_log(NULL, AV_LOG_DEBUG, "Applying option %s (%s) with argument %s.\n",
380 o->key, o->opt->help, o->val);
382 ret = write_option(optctx, o->opt, o->key, o->val);
387 av_log(NULL, AV_LOG_DEBUG, "Successfully parsed a group of options.\n");
392 int locate_option(int argc, char **argv, const OptionDef *options,
398 for (i = 1; i < argc; i++) {
399 const char *cur_opt = argv[i];
401 if (*cur_opt++ != '-')
404 po = find_option(options, cur_opt);
405 if (!po->name && cur_opt[0] == 'n' && cur_opt[1] == 'o')
406 po = find_option(options, cur_opt + 2);
408 if ((!po->name && !strcmp(cur_opt, optname)) ||
409 (po->name && !strcmp(optname, po->name)))
412 if (!po || po->flags & HAS_ARG)
418 void parse_loglevel(int argc, char **argv, const OptionDef *options)
420 int idx = locate_option(argc, argv, options, "loglevel");
422 idx = locate_option(argc, argv, options, "v");
423 if (idx && argv[idx + 1])
424 opt_loglevel(NULL, "loglevel", argv[idx + 1]);
427 #define FLAGS (o->type == AV_OPT_TYPE_FLAGS) ? AV_DICT_APPEND : 0
428 int opt_default(void *optctx, const char *opt, const char *arg)
431 char opt_stripped[128];
433 const AVClass *cc = avcodec_get_class(), *fc = avformat_get_class();
434 #if CONFIG_AVRESAMPLE
435 const AVClass *rc = avresample_get_class();
438 const AVClass *sc = sws_get_class();
441 if (!(p = strchr(opt, ':')))
442 p = opt + strlen(opt);
443 av_strlcpy(opt_stripped, opt, FFMIN(sizeof(opt_stripped), p - opt + 1));
445 if ((o = av_opt_find(&cc, opt_stripped, NULL, 0,
446 AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ)) ||
447 ((opt[0] == 'v' || opt[0] == 'a' || opt[0] == 's') &&
448 (o = av_opt_find(&cc, opt + 1, NULL, 0, AV_OPT_SEARCH_FAKE_OBJ))))
449 av_dict_set(&codec_opts, opt, arg, FLAGS);
450 else if ((o = av_opt_find(&fc, opt, NULL, 0,
451 AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ)))
452 av_dict_set(&format_opts, opt, arg, FLAGS);
453 #if CONFIG_AVRESAMPLE
454 else if ((o = av_opt_find(&rc, opt, NULL, 0,
455 AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ)))
456 av_dict_set(&resample_opts, opt, arg, FLAGS);
459 else if ((o = av_opt_find(&sc, opt, NULL, 0,
460 AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ))) {
461 // XXX we only support sws_flags, not arbitrary sws options
462 int ret = av_opt_set(sws_opts, opt, arg, 0);
464 av_log(NULL, AV_LOG_ERROR, "Error setting option %s.\n", opt);
472 return AVERROR_OPTION_NOT_FOUND;
476 * Check whether given option is a group separator.
478 * @return index of the group definition that matched or -1 if none
480 static int match_group_separator(const OptionGroupDef *groups, int nb_groups,
485 for (i = 0; i < nb_groups; i++) {
486 const OptionGroupDef *p = &groups[i];
487 if (p->sep && !strcmp(p->sep, opt))
495 * Finish parsing an option group.
497 * @param group_idx which group definition should this group belong to
498 * @param arg argument of the group delimiting option
500 static void finish_group(OptionParseContext *octx, int group_idx,
503 OptionGroupList *l = &octx->groups[group_idx];
506 GROW_ARRAY(l->groups, l->nb_groups);
507 g = &l->groups[l->nb_groups - 1];
509 *g = octx->cur_group;
511 g->group_def = l->group_def;
513 g->sws_opts = sws_opts;
515 g->codec_opts = codec_opts;
516 g->format_opts = format_opts;
517 g->resample_opts = resample_opts;
521 resample_opts = NULL;
527 memset(&octx->cur_group, 0, sizeof(octx->cur_group));
531 * Add an option instance to currently parsed group.
533 static void add_opt(OptionParseContext *octx, const OptionDef *opt,
534 const char *key, const char *val)
536 int global = !(opt->flags & (OPT_PERFILE | OPT_SPEC | OPT_OFFSET));
537 OptionGroup *g = global ? &octx->global_opts : &octx->cur_group;
539 GROW_ARRAY(g->opts, g->nb_opts);
540 g->opts[g->nb_opts - 1].opt = opt;
541 g->opts[g->nb_opts - 1].key = key;
542 g->opts[g->nb_opts - 1].val = val;
545 static void init_parse_context(OptionParseContext *octx,
546 const OptionGroupDef *groups, int nb_groups)
548 static const OptionGroupDef global_group = { "global" };
551 memset(octx, 0, sizeof(*octx));
553 octx->nb_groups = nb_groups;
554 octx->groups = av_mallocz(sizeof(*octx->groups) * octx->nb_groups);
558 for (i = 0; i < octx->nb_groups; i++)
559 octx->groups[i].group_def = &groups[i];
561 octx->global_opts.group_def = &global_group;
562 octx->global_opts.arg = "";
567 void uninit_parse_context(OptionParseContext *octx)
571 for (i = 0; i < octx->nb_groups; i++) {
572 OptionGroupList *l = &octx->groups[i];
574 for (j = 0; j < l->nb_groups; j++) {
575 av_freep(&l->groups[j].opts);
576 av_dict_free(&l->groups[j].codec_opts);
577 av_dict_free(&l->groups[j].format_opts);
578 av_dict_free(&l->groups[j].resample_opts);
580 sws_freeContext(l->groups[j].sws_opts);
583 av_freep(&l->groups);
585 av_freep(&octx->groups);
587 av_freep(&octx->cur_group.opts);
588 av_freep(&octx->global_opts.opts);
593 int split_commandline(OptionParseContext *octx, int argc, char *argv[],
594 const OptionDef *options,
595 const OptionGroupDef *groups, int nb_groups)
599 /* perform system-dependent conversions for arguments list */
600 prepare_app_arguments(&argc, &argv);
602 init_parse_context(octx, groups, nb_groups);
603 av_log(NULL, AV_LOG_DEBUG, "Splitting the commandline.\n");
605 while (optindex < argc) {
606 const char *opt = argv[optindex++], *arg;
610 av_log(NULL, AV_LOG_DEBUG, "Reading option '%s' ...", opt);
612 /* unnamed group separators, e.g. output filename */
613 if (opt[0] != '-' || !opt[1]) {
614 finish_group(octx, 0, opt);
615 av_log(NULL, AV_LOG_DEBUG, " matched as %s.\n", groups[0].name);
620 #define GET_ARG(arg) \
622 arg = argv[optindex++]; \
624 av_log(NULL, AV_LOG_ERROR, "Missing argument for option '%s'.\n", opt);\
625 return AVERROR(EINVAL); \
629 /* named group separators, e.g. -i */
630 if ((ret = match_group_separator(groups, nb_groups, opt)) >= 0) {
632 finish_group(octx, ret, arg);
633 av_log(NULL, AV_LOG_DEBUG, " matched as %s with argument '%s'.\n",
634 groups[ret].name, arg);
639 po = find_option(options, opt);
641 if (po->flags & OPT_EXIT) {
642 /* optional argument, e.g. -h */
643 arg = argv[optindex++];
644 } else if (po->flags & HAS_ARG) {
650 add_opt(octx, po, opt, arg);
651 av_log(NULL, AV_LOG_DEBUG, " matched as option '%s' (%s) with "
652 "argument '%s'.\n", po->name, po->help, arg);
657 if (argv[optindex]) {
658 ret = opt_default(NULL, opt, argv[optindex]);
660 av_log(NULL, AV_LOG_DEBUG, " matched as AVOption '%s' with "
661 "argument '%s'.\n", opt, argv[optindex]);
664 } else if (ret != AVERROR_OPTION_NOT_FOUND) {
665 av_log(NULL, AV_LOG_ERROR, "Error parsing option '%s' "
666 "with argument '%s'.\n", opt, argv[optindex]);
671 /* boolean -nofoo options */
672 if (opt[0] == 'n' && opt[1] == 'o' &&
673 (po = find_option(options, opt + 2)) &&
674 po->name && po->flags & OPT_BOOL) {
675 add_opt(octx, po, opt, "0");
676 av_log(NULL, AV_LOG_DEBUG, " matched as option '%s' (%s) with "
677 "argument 0.\n", po->name, po->help);
681 av_log(NULL, AV_LOG_ERROR, "Unrecognized option '%s'.\n", opt);
682 return AVERROR_OPTION_NOT_FOUND;
685 if (octx->cur_group.nb_opts || codec_opts || format_opts || resample_opts)
686 av_log(NULL, AV_LOG_WARNING, "Trailing options were found on the "
689 av_log(NULL, AV_LOG_DEBUG, "Finished splitting the commandline.\n");
694 int opt_loglevel(void *optctx, const char *opt, const char *arg)
696 const struct { const char *name; int level; } log_levels[] = {
697 { "quiet" , AV_LOG_QUIET },
698 { "panic" , AV_LOG_PANIC },
699 { "fatal" , AV_LOG_FATAL },
700 { "error" , AV_LOG_ERROR },
701 { "warning", AV_LOG_WARNING },
702 { "info" , AV_LOG_INFO },
703 { "verbose", AV_LOG_VERBOSE },
704 { "debug" , AV_LOG_DEBUG },
710 for (i = 0; i < FF_ARRAY_ELEMS(log_levels); i++) {
711 if (!strcmp(log_levels[i].name, arg)) {
712 av_log_set_level(log_levels[i].level);
717 level = strtol(arg, &tail, 10);
719 av_log(NULL, AV_LOG_FATAL, "Invalid loglevel \"%s\". "
720 "Possible levels are numbers or:\n", arg);
721 for (i = 0; i < FF_ARRAY_ELEMS(log_levels); i++)
722 av_log(NULL, AV_LOG_FATAL, "\"%s\"\n", log_levels[i].name);
725 av_log_set_level(level);
729 int opt_timelimit(void *optctx, const char *opt, const char *arg)
732 int lim = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
733 struct rlimit rl = { lim, lim + 1 };
734 if (setrlimit(RLIMIT_CPU, &rl))
737 av_log(NULL, AV_LOG_WARNING, "-%s not implemented on this OS\n", opt);
742 void print_error(const char *filename, int err)
745 const char *errbuf_ptr = errbuf;
747 if (av_strerror(err, errbuf, sizeof(errbuf)) < 0)
748 errbuf_ptr = strerror(AVUNERROR(err));
749 av_log(NULL, AV_LOG_ERROR, "%s: %s\n", filename, errbuf_ptr);
752 static int warned_cfg = 0;
755 #define SHOW_VERSION 2
756 #define SHOW_CONFIG 4
758 #define PRINT_LIB_INFO(libname, LIBNAME, flags, level) \
759 if (CONFIG_##LIBNAME) { \
760 const char *indent = flags & INDENT? " " : ""; \
761 if (flags & SHOW_VERSION) { \
762 unsigned int version = libname##_version(); \
763 av_log(NULL, level, \
764 "%slib%-10s %2d.%3d.%2d / %2d.%3d.%2d\n", \
766 LIB##LIBNAME##_VERSION_MAJOR, \
767 LIB##LIBNAME##_VERSION_MINOR, \
768 LIB##LIBNAME##_VERSION_MICRO, \
769 version >> 16, version >> 8 & 0xff, version & 0xff); \
771 if (flags & SHOW_CONFIG) { \
772 const char *cfg = libname##_configuration(); \
773 if (strcmp(LIBAV_CONFIGURATION, cfg)) { \
775 av_log(NULL, level, \
776 "%sWARNING: library configuration mismatch\n", \
780 av_log(NULL, level, "%s%-11s configuration: %s\n", \
781 indent, #libname, cfg); \
786 static void print_all_libs_info(int flags, int level)
788 PRINT_LIB_INFO(avutil, AVUTIL, flags, level);
789 PRINT_LIB_INFO(avcodec, AVCODEC, flags, level);
790 PRINT_LIB_INFO(avformat, AVFORMAT, flags, level);
791 PRINT_LIB_INFO(avdevice, AVDEVICE, flags, level);
792 PRINT_LIB_INFO(avfilter, AVFILTER, flags, level);
793 PRINT_LIB_INFO(avresample, AVRESAMPLE, flags, level);
794 PRINT_LIB_INFO(swscale, SWSCALE, flags, level);
797 void show_banner(void)
799 av_log(NULL, AV_LOG_INFO,
800 "%s version " LIBAV_VERSION ", Copyright (c) %d-%d the Libav developers\n",
801 program_name, program_birth_year, this_year);
802 av_log(NULL, AV_LOG_INFO, " built on %s %s with %s\n",
803 __DATE__, __TIME__, CC_IDENT);
804 av_log(NULL, AV_LOG_VERBOSE, " configuration: " LIBAV_CONFIGURATION "\n");
805 print_all_libs_info(INDENT|SHOW_CONFIG, AV_LOG_VERBOSE);
806 print_all_libs_info(INDENT|SHOW_VERSION, AV_LOG_VERBOSE);
809 int show_version(void *optctx, const char *opt, const char *arg)
811 av_log_set_callback(log_callback_help);
812 printf("%s " LIBAV_VERSION "\n", program_name);
813 print_all_libs_info(SHOW_VERSION, AV_LOG_INFO);
818 int show_license(void *optctx, const char *opt, const char *arg)
822 "This version of %s has nonfree parts compiled in.\n"
823 "Therefore it is not legally redistributable.\n",
826 "%s is free software; you can redistribute it and/or modify\n"
827 "it under the terms of the GNU General Public License as published by\n"
828 "the Free Software Foundation; either version 3 of the License, or\n"
829 "(at your option) any later version.\n"
831 "%s is distributed in the hope that it will be useful,\n"
832 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
833 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
834 "GNU General Public License for more details.\n"
836 "You should have received a copy of the GNU General Public License\n"
837 "along with %s. If not, see <http://www.gnu.org/licenses/>.\n",
838 program_name, program_name, program_name
840 "%s is free software; you can redistribute it and/or modify\n"
841 "it under the terms of the GNU General Public License as published by\n"
842 "the Free Software Foundation; either version 2 of the License, or\n"
843 "(at your option) any later version.\n"
845 "%s is distributed in the hope that it will be useful,\n"
846 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
847 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
848 "GNU General Public License for more details.\n"
850 "You should have received a copy of the GNU General Public License\n"
851 "along with %s; if not, write to the Free Software\n"
852 "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n",
853 program_name, program_name, program_name
855 "%s is free software; you can redistribute it and/or modify\n"
856 "it under the terms of the GNU Lesser General Public License as published by\n"
857 "the Free Software Foundation; either version 3 of the License, or\n"
858 "(at your option) any later version.\n"
860 "%s is distributed in the hope that it will be useful,\n"
861 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
862 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
863 "GNU Lesser General Public License for more details.\n"
865 "You should have received a copy of the GNU Lesser General Public License\n"
866 "along with %s. If not, see <http://www.gnu.org/licenses/>.\n",
867 program_name, program_name, program_name
869 "%s is free software; you can redistribute it and/or\n"
870 "modify it under the terms of the GNU Lesser General Public\n"
871 "License as published by the Free Software Foundation; either\n"
872 "version 2.1 of the License, or (at your option) any later version.\n"
874 "%s is distributed in the hope that it will be useful,\n"
875 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
876 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU\n"
877 "Lesser General Public License for more details.\n"
879 "You should have received a copy of the GNU Lesser General Public\n"
880 "License along with %s; if not, write to the Free Software\n"
881 "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n",
882 program_name, program_name, program_name
889 int show_formats(void *optctx, const char *opt, const char *arg)
891 AVInputFormat *ifmt = NULL;
892 AVOutputFormat *ofmt = NULL;
893 const char *last_name;
895 printf("File formats:\n"
896 " D. = Demuxing supported\n"
897 " .E = Muxing supported\n"
903 const char *name = NULL;
904 const char *long_name = NULL;
906 while ((ofmt = av_oformat_next(ofmt))) {
907 if ((name == NULL || strcmp(ofmt->name, name) < 0) &&
908 strcmp(ofmt->name, last_name) > 0) {
910 long_name = ofmt->long_name;
914 while ((ifmt = av_iformat_next(ifmt))) {
915 if ((name == NULL || strcmp(ifmt->name, name) < 0) &&
916 strcmp(ifmt->name, last_name) > 0) {
918 long_name = ifmt->long_name;
921 if (name && strcmp(ifmt->name, name) == 0)
928 printf(" %s%s %-15s %s\n",
932 long_name ? long_name:" ");
937 #define PRINT_CODEC_SUPPORTED(codec, field, type, list_name, term, get_name) \
938 if (codec->field) { \
939 const type *p = c->field; \
941 printf(" Supported " list_name ":"); \
942 while (*p != term) { \
944 printf(" %s", name); \
950 static void print_codec(const AVCodec *c)
952 int encoder = av_codec_is_encoder(c);
954 printf("%s %s [%s]:\n", encoder ? "Encoder" : "Decoder", c->name,
955 c->long_name ? c->long_name : "");
957 if (c->type == AVMEDIA_TYPE_VIDEO) {
958 printf(" Threading capabilities: ");
959 switch (c->capabilities & (CODEC_CAP_FRAME_THREADS |
960 CODEC_CAP_SLICE_THREADS)) {
961 case CODEC_CAP_FRAME_THREADS |
962 CODEC_CAP_SLICE_THREADS: printf("frame and slice"); break;
963 case CODEC_CAP_FRAME_THREADS: printf("frame"); break;
964 case CODEC_CAP_SLICE_THREADS: printf("slice"); break;
965 default: printf("no"); break;
970 if (c->supported_framerates) {
971 const AVRational *fps = c->supported_framerates;
973 printf(" Supported framerates:");
975 printf(" %d/%d", fps->num, fps->den);
980 PRINT_CODEC_SUPPORTED(c, pix_fmts, enum AVPixelFormat, "pixel formats",
981 AV_PIX_FMT_NONE, GET_PIX_FMT_NAME);
982 PRINT_CODEC_SUPPORTED(c, supported_samplerates, int, "sample rates", 0,
983 GET_SAMPLE_RATE_NAME);
984 PRINT_CODEC_SUPPORTED(c, sample_fmts, enum AVSampleFormat, "sample formats",
985 AV_SAMPLE_FMT_NONE, GET_SAMPLE_FMT_NAME);
986 PRINT_CODEC_SUPPORTED(c, channel_layouts, uint64_t, "channel layouts",
987 0, GET_CH_LAYOUT_DESC);
990 show_help_children(c->priv_class,
991 AV_OPT_FLAG_ENCODING_PARAM |
992 AV_OPT_FLAG_DECODING_PARAM);
996 static char get_media_type_char(enum AVMediaType type)
999 case AVMEDIA_TYPE_VIDEO: return 'V';
1000 case AVMEDIA_TYPE_AUDIO: return 'A';
1001 case AVMEDIA_TYPE_SUBTITLE: return 'S';
1002 default: return '?';
1006 static const AVCodec *next_codec_for_id(enum AVCodecID id, const AVCodec *prev,
1009 while ((prev = av_codec_next(prev))) {
1010 if (prev->id == id &&
1011 (encoder ? av_codec_is_encoder(prev) : av_codec_is_decoder(prev)))
1017 static void print_codecs_for_id(enum AVCodecID id, int encoder)
1019 const AVCodec *codec = NULL;
1021 printf(" (%s: ", encoder ? "encoders" : "decoders");
1023 while ((codec = next_codec_for_id(id, codec, encoder)))
1024 printf("%s ", codec->name);
1029 int show_codecs(void *optctx, const char *opt, const char *arg)
1031 const AVCodecDescriptor *desc = NULL;
1034 " D..... = Decoding supported\n"
1035 " .E.... = Encoding supported\n"
1036 " ..V... = Video codec\n"
1037 " ..A... = Audio codec\n"
1038 " ..S... = Subtitle codec\n"
1039 " ...I.. = Intra frame-only codec\n"
1040 " ....L. = Lossy compression\n"
1041 " .....S = Lossless compression\n"
1043 while ((desc = avcodec_descriptor_next(desc))) {
1044 const AVCodec *codec = NULL;
1046 printf(avcodec_find_decoder(desc->id) ? "D" : ".");
1047 printf(avcodec_find_encoder(desc->id) ? "E" : ".");
1049 printf("%c", get_media_type_char(desc->type));
1050 printf((desc->props & AV_CODEC_PROP_INTRA_ONLY) ? "I" : ".");
1051 printf((desc->props & AV_CODEC_PROP_LOSSY) ? "L" : ".");
1052 printf((desc->props & AV_CODEC_PROP_LOSSLESS) ? "S" : ".");
1054 printf(" %-20s %s", desc->name, desc->long_name ? desc->long_name : "");
1056 /* print decoders/encoders when there's more than one or their
1057 * names are different from codec name */
1058 while ((codec = next_codec_for_id(desc->id, codec, 0))) {
1059 if (strcmp(codec->name, desc->name)) {
1060 print_codecs_for_id(desc->id, 0);
1065 while ((codec = next_codec_for_id(desc->id, codec, 1))) {
1066 if (strcmp(codec->name, desc->name)) {
1067 print_codecs_for_id(desc->id, 1);
1077 static void print_codecs(int encoder)
1079 const AVCodecDescriptor *desc = NULL;
1084 " S... = Subtitle\n"
1085 " .F.. = Frame-level multithreading\n"
1086 " ..S. = Slice-level multithreading\n"
1087 " ...X = Codec is experimental\n"
1089 encoder ? "Encoders" : "Decoders");
1090 while ((desc = avcodec_descriptor_next(desc))) {
1091 const AVCodec *codec = NULL;
1093 while ((codec = next_codec_for_id(desc->id, codec, encoder))) {
1094 printf("%c", get_media_type_char(desc->type));
1095 printf((codec->capabilities & CODEC_CAP_FRAME_THREADS) ? "F" : ".");
1096 printf((codec->capabilities & CODEC_CAP_SLICE_THREADS) ? "S" : ".");
1097 printf((codec->capabilities & CODEC_CAP_EXPERIMENTAL) ? "X" : ".");
1099 printf(" %-20s %s", codec->name, codec->long_name ? codec->long_name : "");
1100 if (strcmp(codec->name, desc->name))
1101 printf(" (codec %s)", desc->name);
1108 int show_decoders(void *optctx, const char *opt, const char *arg)
1114 int show_encoders(void *optctx, const char *opt, const char *arg)
1120 int show_bsfs(void *optctx, const char *opt, const char *arg)
1122 AVBitStreamFilter *bsf = NULL;
1124 printf("Bitstream filters:\n");
1125 while ((bsf = av_bitstream_filter_next(bsf)))
1126 printf("%s\n", bsf->name);
1131 int show_protocols(void *optctx, const char *opt, const char *arg)
1133 void *opaque = NULL;
1136 printf("Supported file protocols:\n"
1138 while ((name = avio_enum_protocols(&opaque, 0)))
1139 printf("%s\n", name);
1140 printf("Output:\n");
1141 while ((name = avio_enum_protocols(&opaque, 1)))
1142 printf("%s\n", name);
1146 int show_filters(void *optctx, const char *opt, const char *arg)
1148 const AVFilter av_unused(*filter) = NULL;
1150 printf("Filters:\n");
1152 while ((filter = avfilter_next(filter)))
1153 printf("%-16s %s\n", filter->name, filter->description);
1158 int show_pix_fmts(void *optctx, const char *opt, const char *arg)
1160 const AVPixFmtDescriptor *pix_desc = NULL;
1162 printf("Pixel formats:\n"
1163 "I.... = Supported Input format for conversion\n"
1164 ".O... = Supported Output format for conversion\n"
1165 "..H.. = Hardware accelerated format\n"
1166 "...P. = Paletted format\n"
1167 "....B = Bitstream format\n"
1168 "FLAGS NAME NB_COMPONENTS BITS_PER_PIXEL\n"
1172 # define sws_isSupportedInput(x) 0
1173 # define sws_isSupportedOutput(x) 0
1176 while ((pix_desc = av_pix_fmt_desc_next(pix_desc))) {
1177 enum AVPixelFormat pix_fmt = av_pix_fmt_desc_get_id(pix_desc);
1178 printf("%c%c%c%c%c %-16s %d %2d\n",
1179 sws_isSupportedInput (pix_fmt) ? 'I' : '.',
1180 sws_isSupportedOutput(pix_fmt) ? 'O' : '.',
1181 pix_desc->flags & AV_PIX_FMT_FLAG_HWACCEL ? 'H' : '.',
1182 pix_desc->flags & AV_PIX_FMT_FLAG_PAL ? 'P' : '.',
1183 pix_desc->flags & AV_PIX_FMT_FLAG_BITSTREAM ? 'B' : '.',
1185 pix_desc->nb_components,
1186 av_get_bits_per_pixel(pix_desc));
1191 int show_sample_fmts(void *optctx, const char *opt, const char *arg)
1195 for (i = -1; i < AV_SAMPLE_FMT_NB; i++)
1196 printf("%s\n", av_get_sample_fmt_string(fmt_str, sizeof(fmt_str), i));
1200 static void show_help_codec(const char *name, int encoder)
1202 const AVCodecDescriptor *desc;
1203 const AVCodec *codec;
1206 av_log(NULL, AV_LOG_ERROR, "No codec name specified.\n");
1210 codec = encoder ? avcodec_find_encoder_by_name(name) :
1211 avcodec_find_decoder_by_name(name);
1215 else if ((desc = avcodec_descriptor_get_by_name(name))) {
1218 while ((codec = next_codec_for_id(desc->id, codec, encoder))) {
1224 av_log(NULL, AV_LOG_ERROR, "Codec '%s' is known to Libav, "
1225 "but no %s for it are available. Libav might need to be "
1226 "recompiled with additional external libraries.\n",
1227 name, encoder ? "encoders" : "decoders");
1230 av_log(NULL, AV_LOG_ERROR, "Codec '%s' is not recognized by Libav.\n",
1235 static void show_help_demuxer(const char *name)
1237 const AVInputFormat *fmt = av_find_input_format(name);
1240 av_log(NULL, AV_LOG_ERROR, "Unknown format '%s'.\n", name);
1244 printf("Demuxer %s [%s]:\n", fmt->name, fmt->long_name);
1246 if (fmt->extensions)
1247 printf(" Common extensions: %s.\n", fmt->extensions);
1249 if (fmt->priv_class)
1250 show_help_children(fmt->priv_class, AV_OPT_FLAG_DECODING_PARAM);
1253 static void show_help_muxer(const char *name)
1255 const AVCodecDescriptor *desc;
1256 const AVOutputFormat *fmt = av_guess_format(name, NULL, NULL);
1259 av_log(NULL, AV_LOG_ERROR, "Unknown format '%s'.\n", name);
1263 printf("Muxer %s [%s]:\n", fmt->name, fmt->long_name);
1265 if (fmt->extensions)
1266 printf(" Common extensions: %s.\n", fmt->extensions);
1268 printf(" Mime type: %s.\n", fmt->mime_type);
1269 if (fmt->video_codec != AV_CODEC_ID_NONE &&
1270 (desc = avcodec_descriptor_get(fmt->video_codec))) {
1271 printf(" Default video codec: %s.\n", desc->name);
1273 if (fmt->audio_codec != AV_CODEC_ID_NONE &&
1274 (desc = avcodec_descriptor_get(fmt->audio_codec))) {
1275 printf(" Default audio codec: %s.\n", desc->name);
1277 if (fmt->subtitle_codec != AV_CODEC_ID_NONE &&
1278 (desc = avcodec_descriptor_get(fmt->subtitle_codec))) {
1279 printf(" Default subtitle codec: %s.\n", desc->name);
1282 if (fmt->priv_class)
1283 show_help_children(fmt->priv_class, AV_OPT_FLAG_ENCODING_PARAM);
1287 static void show_help_filter(const char *name)
1289 const AVFilter *f = avfilter_get_by_name(name);
1293 av_log(NULL, AV_LOG_ERROR, "No filter name specified.\n");
1296 av_log(NULL, AV_LOG_ERROR, "Unknown filter '%s'.\n", name);
1300 printf("Filter %s [%s]:\n", f->name, f->description);
1302 if (f->flags & AVFILTER_FLAG_SLICE_THREADS)
1303 printf(" slice threading supported\n");
1305 printf(" Inputs:\n");
1306 count = avfilter_pad_count(f->inputs);
1307 for (i = 0; i < count; i++) {
1308 printf(" %d %s (%s)\n", i, avfilter_pad_get_name(f->inputs, i),
1309 media_type_string(avfilter_pad_get_type(f->inputs, i)));
1311 if (f->flags & AVFILTER_FLAG_DYNAMIC_INPUTS)
1312 printf(" dynamic (depending on the options)\n");
1314 printf(" Outputs:\n");
1315 count = avfilter_pad_count(f->outputs);
1316 for (i = 0; i < count; i++) {
1317 printf(" %d %s (%s)\n", i, avfilter_pad_get_name(f->outputs, i),
1318 media_type_string(avfilter_pad_get_type(f->outputs, i)));
1320 if (f->flags & AVFILTER_FLAG_DYNAMIC_OUTPUTS)
1321 printf(" dynamic (depending on the options)\n");
1324 show_help_children(f->priv_class, AV_OPT_FLAG_VIDEO_PARAM |
1325 AV_OPT_FLAG_AUDIO_PARAM);
1329 int show_help(void *optctx, const char *opt, const char *arg)
1332 av_log_set_callback(log_callback_help);
1334 topic = av_strdup(arg ? arg : "");
1335 par = strchr(topic, '=');
1340 show_help_default(topic, par);
1341 } else if (!strcmp(topic, "decoder")) {
1342 show_help_codec(par, 0);
1343 } else if (!strcmp(topic, "encoder")) {
1344 show_help_codec(par, 1);
1345 } else if (!strcmp(topic, "demuxer")) {
1346 show_help_demuxer(par);
1347 } else if (!strcmp(topic, "muxer")) {
1348 show_help_muxer(par);
1350 } else if (!strcmp(topic, "filter")) {
1351 show_help_filter(par);
1354 show_help_default(topic, par);
1361 int read_yesno(void)
1364 int yesno = (av_toupper(c) == 'Y');
1366 while (c != '\n' && c != EOF)
1372 int cmdutils_read_file(const char *filename, char **bufptr, size_t *size)
1375 FILE *f = fopen(filename, "rb");
1378 av_log(NULL, AV_LOG_ERROR, "Cannot read file '%s': %s\n", filename,
1380 return AVERROR(errno);
1382 fseek(f, 0, SEEK_END);
1384 fseek(f, 0, SEEK_SET);
1385 *bufptr = av_malloc(*size + 1);
1387 av_log(NULL, AV_LOG_ERROR, "Could not allocate file buffer\n");
1389 return AVERROR(ENOMEM);
1391 ret = fread(*bufptr, 1, *size, f);
1395 av_log(NULL, AV_LOG_ERROR, "Error while reading file '%s': %s\n",
1396 filename, strerror(errno));
1397 ret = AVERROR(errno);
1402 (*bufptr)[(*size)++] = '\0';
1409 void init_pts_correction(PtsCorrectionContext *ctx)
1411 ctx->num_faulty_pts = ctx->num_faulty_dts = 0;
1412 ctx->last_pts = ctx->last_dts = INT64_MIN;
1415 int64_t guess_correct_pts(PtsCorrectionContext *ctx, int64_t reordered_pts,
1418 int64_t pts = AV_NOPTS_VALUE;
1420 if (dts != AV_NOPTS_VALUE) {
1421 ctx->num_faulty_dts += dts <= ctx->last_dts;
1422 ctx->last_dts = dts;
1424 if (reordered_pts != AV_NOPTS_VALUE) {
1425 ctx->num_faulty_pts += reordered_pts <= ctx->last_pts;
1426 ctx->last_pts = reordered_pts;
1428 if ((ctx->num_faulty_pts<=ctx->num_faulty_dts || dts == AV_NOPTS_VALUE)
1429 && reordered_pts != AV_NOPTS_VALUE)
1430 pts = reordered_pts;
1437 FILE *get_preset_file(char *filename, size_t filename_size,
1438 const char *preset_name, int is_path,
1439 const char *codec_name)
1443 const char *base[3] = { getenv("AVCONV_DATADIR"),
1448 av_strlcpy(filename, preset_name, filename_size);
1449 f = fopen(filename, "r");
1451 for (i = 0; i < 3 && !f; i++) {
1454 snprintf(filename, filename_size, "%s%s/%s.avpreset", base[i],
1455 i != 1 ? "" : "/.avconv", preset_name);
1456 f = fopen(filename, "r");
1457 if (!f && codec_name) {
1458 snprintf(filename, filename_size,
1459 "%s%s/%s-%s.avpreset",
1460 base[i], i != 1 ? "" : "/.avconv", codec_name,
1462 f = fopen(filename, "r");
1470 int check_stream_specifier(AVFormatContext *s, AVStream *st, const char *spec)
1472 if (*spec <= '9' && *spec >= '0') /* opt:index */
1473 return strtol(spec, NULL, 0) == st->index;
1474 else if (*spec == 'v' || *spec == 'a' || *spec == 's' || *spec == 'd' ||
1475 *spec == 't') { /* opt:[vasdt] */
1476 enum AVMediaType type;
1479 case 'v': type = AVMEDIA_TYPE_VIDEO; break;
1480 case 'a': type = AVMEDIA_TYPE_AUDIO; break;
1481 case 's': type = AVMEDIA_TYPE_SUBTITLE; break;
1482 case 'd': type = AVMEDIA_TYPE_DATA; break;
1483 case 't': type = AVMEDIA_TYPE_ATTACHMENT; break;
1484 default: av_assert0(0);
1486 if (type != st->codec->codec_type)
1488 if (*spec++ == ':') { /* possibly followed by :index */
1489 int i, index = strtol(spec, NULL, 0);
1490 for (i = 0; i < s->nb_streams; i++)
1491 if (s->streams[i]->codec->codec_type == type && index-- == 0)
1492 return i == st->index;
1496 } else if (*spec == 'p' && *(spec + 1) == ':') {
1500 prog_id = strtol(spec, &endptr, 0);
1501 for (i = 0; i < s->nb_programs; i++) {
1502 if (s->programs[i]->id != prog_id)
1505 if (*endptr++ == ':') {
1506 int stream_idx = strtol(endptr, NULL, 0);
1507 return stream_idx >= 0 &&
1508 stream_idx < s->programs[i]->nb_stream_indexes &&
1509 st->index == s->programs[i]->stream_index[stream_idx];
1512 for (j = 0; j < s->programs[i]->nb_stream_indexes; j++)
1513 if (st->index == s->programs[i]->stream_index[j])
1517 } else if (!*spec) /* empty specifier, matches everything */
1520 av_log(s, AV_LOG_ERROR, "Invalid stream specifier: %s.\n", spec);
1521 return AVERROR(EINVAL);
1524 AVDictionary *filter_codec_opts(AVDictionary *opts, enum AVCodecID codec_id,
1525 AVFormatContext *s, AVStream *st, AVCodec *codec)
1527 AVDictionary *ret = NULL;
1528 AVDictionaryEntry *t = NULL;
1529 int flags = s->oformat ? AV_OPT_FLAG_ENCODING_PARAM
1530 : AV_OPT_FLAG_DECODING_PARAM;
1532 const AVClass *cc = avcodec_get_class();
1535 codec = s->oformat ? avcodec_find_encoder(codec_id)
1536 : avcodec_find_decoder(codec_id);
1538 switch (st->codec->codec_type) {
1539 case AVMEDIA_TYPE_VIDEO:
1541 flags |= AV_OPT_FLAG_VIDEO_PARAM;
1543 case AVMEDIA_TYPE_AUDIO:
1545 flags |= AV_OPT_FLAG_AUDIO_PARAM;
1547 case AVMEDIA_TYPE_SUBTITLE:
1549 flags |= AV_OPT_FLAG_SUBTITLE_PARAM;
1553 while (t = av_dict_get(opts, "", t, AV_DICT_IGNORE_SUFFIX)) {
1554 char *p = strchr(t->key, ':');
1556 /* check stream specification in opt name */
1558 switch (check_stream_specifier(s, st, p + 1)) {
1559 case 1: *p = 0; break;
1561 default: return NULL;
1564 if (av_opt_find(&cc, t->key, NULL, flags, AV_OPT_SEARCH_FAKE_OBJ) ||
1565 (codec && codec->priv_class &&
1566 av_opt_find(&codec->priv_class, t->key, NULL, flags,
1567 AV_OPT_SEARCH_FAKE_OBJ)))
1568 av_dict_set(&ret, t->key, t->value, 0);
1569 else if (t->key[0] == prefix &&
1570 av_opt_find(&cc, t->key + 1, NULL, flags,
1571 AV_OPT_SEARCH_FAKE_OBJ))
1572 av_dict_set(&ret, t->key + 1, t->value, 0);
1580 AVDictionary **setup_find_stream_info_opts(AVFormatContext *s,
1581 AVDictionary *codec_opts)
1584 AVDictionary **opts;
1588 opts = av_mallocz(s->nb_streams * sizeof(*opts));
1590 av_log(NULL, AV_LOG_ERROR,
1591 "Could not alloc memory for stream options.\n");
1594 for (i = 0; i < s->nb_streams; i++)
1595 opts[i] = filter_codec_opts(codec_opts, s->streams[i]->codec->codec_id,
1596 s, s->streams[i], NULL);
1600 void *grow_array(void *array, int elem_size, int *size, int new_size)
1602 if (new_size >= INT_MAX / elem_size) {
1603 av_log(NULL, AV_LOG_ERROR, "Array too big.\n");
1606 if (*size < new_size) {
1607 uint8_t *tmp = av_realloc(array, new_size*elem_size);
1609 av_log(NULL, AV_LOG_ERROR, "Could not alloc buffer.\n");
1612 memset(tmp + *size*elem_size, 0, (new_size-*size) * elem_size);
1619 const char *media_type_string(enum AVMediaType media_type)
1621 switch (media_type) {
1622 case AVMEDIA_TYPE_VIDEO: return "video";
1623 case AVMEDIA_TYPE_AUDIO: return "audio";
1624 case AVMEDIA_TYPE_DATA: return "data";
1625 case AVMEDIA_TYPE_SUBTITLE: return "subtitle";
1626 case AVMEDIA_TYPE_ATTACHMENT: return "attachment";
1627 default: return "unknown";