2 * Various utilities for command line tools
3 * Copyright (c) 2000-2003 Fabrice Bellard
5 * This file is part of FFmpeg.
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.
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.
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
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 "compat/va_copy.h"
33 #include "libavformat/avformat.h"
34 #include "libavfilter/avfilter.h"
35 #include "libavdevice/avdevice.h"
36 #include "libavresample/avresample.h"
37 #include "libswscale/swscale.h"
38 #include "libswresample/swresample.h"
39 #include "libpostproc/postprocess.h"
40 #include "libavutil/avassert.h"
41 #include "libavutil/avstring.h"
42 #include "libavutil/bprint.h"
43 #include "libavutil/mathematics.h"
44 #include "libavutil/imgutils.h"
45 #include "libavutil/parseutils.h"
46 #include "libavutil/pixdesc.h"
47 #include "libavutil/eval.h"
48 #include "libavutil/dict.h"
49 #include "libavutil/opt.h"
53 #include "libavformat/network.h"
55 #if HAVE_SYS_RESOURCE_H
57 #include <sys/resource.h>
60 static int init_report(const char *env);
62 struct SwsContext *sws_opts;
63 AVDictionary *swr_opts;
64 AVDictionary *format_opts, *codec_opts, *resample_opts;
66 const int this_year = 2013;
68 static FILE *report_file;
74 sws_opts = sws_getContext(16, 16, 0, 16, 16, 0, SWS_BICUBIC,
78 void uninit_opts(void)
81 sws_freeContext(sws_opts);
85 av_dict_free(&swr_opts);
86 av_dict_free(&format_opts);
87 av_dict_free(&codec_opts);
88 av_dict_free(&resample_opts);
91 void log_callback_help(void *ptr, int level, const char *fmt, va_list vl)
93 vfprintf(stdout, fmt, vl);
96 static void log_callback_report(void *ptr, int level, const char *fmt, va_list vl)
100 static int print_prefix = 1;
103 av_log_default_callback(ptr, level, fmt, vl);
104 av_log_format_line(ptr, level, fmt, vl2, line, sizeof(line), &print_prefix);
106 fputs(line, report_file);
110 double parse_number_or_die(const char *context, const char *numstr, int type,
111 double min, double max)
115 double d = av_strtod(numstr, &tail);
117 error = "Expected number for %s but found: %s\n";
118 else if (d < min || d > max)
119 error = "The value for %s was %s which is not within %f - %f\n";
120 else if (type == OPT_INT64 && (int64_t)d != d)
121 error = "Expected int64 for %s but found %s\n";
122 else if (type == OPT_INT && (int)d != d)
123 error = "Expected int for %s but found %s\n";
126 av_log(NULL, AV_LOG_FATAL, error, context, numstr, min, max);
131 int64_t parse_time_or_die(const char *context, const char *timestr,
135 if (av_parse_time(&us, timestr, is_duration) < 0) {
136 av_log(NULL, AV_LOG_FATAL, "Invalid %s specification for %s: %s\n",
137 is_duration ? "duration" : "date", context, timestr);
143 void show_help_options(const OptionDef *options, const char *msg, int req_flags,
144 int rej_flags, int alt_flags)
150 for (po = options; po->name != NULL; po++) {
153 if (((po->flags & req_flags) != req_flags) ||
154 (alt_flags && !(po->flags & alt_flags)) ||
155 (po->flags & rej_flags))
162 av_strlcpy(buf, po->name, sizeof(buf));
164 av_strlcat(buf, " ", sizeof(buf));
165 av_strlcat(buf, po->argname, sizeof(buf));
167 printf("-%-17s %s\n", buf, po->help);
172 void show_help_children(const AVClass *class, int flags)
174 const AVClass *child = NULL;
176 av_opt_show2(&class, NULL, flags, 0);
180 while (child = av_opt_child_class_next(class, child))
181 show_help_children(child, flags);
184 static const OptionDef *find_option(const OptionDef *po, const char *name)
186 const char *p = strchr(name, ':');
187 int len = p ? p - name : strlen(name);
189 while (po->name != NULL) {
190 if (!strncmp(name, po->name, len) && strlen(po->name) == len)
197 #if HAVE_COMMANDLINETOARGVW
199 #include <shellapi.h>
200 /* Will be leaked on exit */
201 static char** win32_argv_utf8 = NULL;
202 static int win32_argc = 0;
205 * Prepare command line arguments for executable.
206 * For Windows - perform wide-char to UTF-8 conversion.
207 * Input arguments should be main() function arguments.
208 * @param argc_ptr Arguments number (including executable)
209 * @param argv_ptr Arguments list.
211 static void prepare_app_arguments(int *argc_ptr, char ***argv_ptr)
215 int i, buffsize = 0, offset = 0;
217 if (win32_argv_utf8) {
218 *argc_ptr = win32_argc;
219 *argv_ptr = win32_argv_utf8;
224 argv_w = CommandLineToArgvW(GetCommandLineW(), &win32_argc);
225 if (win32_argc <= 0 || !argv_w)
228 /* determine the UTF-8 buffer size (including NULL-termination symbols) */
229 for (i = 0; i < win32_argc; i++)
230 buffsize += WideCharToMultiByte(CP_UTF8, 0, argv_w[i], -1,
231 NULL, 0, NULL, NULL);
233 win32_argv_utf8 = av_mallocz(sizeof(char *) * (win32_argc + 1) + buffsize);
234 argstr_flat = (char *)win32_argv_utf8 + sizeof(char *) * (win32_argc + 1);
235 if (win32_argv_utf8 == NULL) {
240 for (i = 0; i < win32_argc; i++) {
241 win32_argv_utf8[i] = &argstr_flat[offset];
242 offset += WideCharToMultiByte(CP_UTF8, 0, argv_w[i], -1,
243 &argstr_flat[offset],
244 buffsize - offset, NULL, NULL);
246 win32_argv_utf8[i] = NULL;
249 *argc_ptr = win32_argc;
250 *argv_ptr = win32_argv_utf8;
253 static inline void prepare_app_arguments(int *argc_ptr, char ***argv_ptr)
257 #endif /* HAVE_COMMANDLINETOARGVW */
259 static int write_option(void *optctx, const OptionDef *po, const char *opt,
262 /* new-style options contain an offset into optctx, old-style address of
264 void *dst = po->flags & (OPT_OFFSET | OPT_SPEC) ?
265 (uint8_t *)optctx + po->u.off : po->u.dst_ptr;
268 if (po->flags & OPT_SPEC) {
269 SpecifierOpt **so = dst;
270 char *p = strchr(opt, ':');
272 dstcount = (int *)(so + 1);
273 *so = grow_array(*so, sizeof(**so), dstcount, *dstcount + 1);
274 (*so)[*dstcount - 1].specifier = av_strdup(p ? p + 1 : "");
275 dst = &(*so)[*dstcount - 1].u;
278 if (po->flags & OPT_STRING) {
280 str = av_strdup(arg);
283 } else if (po->flags & OPT_BOOL || po->flags & OPT_INT) {
284 *(int *)dst = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
285 } else if (po->flags & OPT_INT64) {
286 *(int64_t *)dst = parse_number_or_die(opt, arg, OPT_INT64, INT64_MIN, INT64_MAX);
287 } else if (po->flags & OPT_TIME) {
288 *(int64_t *)dst = parse_time_or_die(opt, arg, 1);
289 } else if (po->flags & OPT_FLOAT) {
290 *(float *)dst = parse_number_or_die(opt, arg, OPT_FLOAT, -INFINITY, INFINITY);
291 } else if (po->flags & OPT_DOUBLE) {
292 *(double *)dst = parse_number_or_die(opt, arg, OPT_DOUBLE, -INFINITY, INFINITY);
293 } else if (po->u.func_arg) {
294 int ret = po->u.func_arg(optctx, opt, arg);
296 av_log(NULL, AV_LOG_ERROR,
297 "Failed to set value '%s' for option '%s': %s\n",
298 arg, opt, av_err2str(ret));
302 if (po->flags & OPT_EXIT)
308 int parse_option(void *optctx, const char *opt, const char *arg,
309 const OptionDef *options)
314 po = find_option(options, opt);
315 if (!po->name && opt[0] == 'n' && opt[1] == 'o') {
316 /* handle 'no' bool option */
317 po = find_option(options, opt + 2);
318 if ((po->name && (po->flags & OPT_BOOL)))
320 } else if (po->flags & OPT_BOOL)
324 po = find_option(options, "default");
326 av_log(NULL, AV_LOG_ERROR, "Unrecognized option '%s'\n", opt);
327 return AVERROR(EINVAL);
329 if (po->flags & HAS_ARG && !arg) {
330 av_log(NULL, AV_LOG_ERROR, "Missing argument for option '%s'\n", opt);
331 return AVERROR(EINVAL);
334 ret = write_option(optctx, po, opt, arg);
338 return !!(po->flags & HAS_ARG);
341 void parse_options(void *optctx, int argc, char **argv, const OptionDef *options,
342 void (*parse_arg_function)(void *, const char*))
345 int optindex, handleoptions = 1, ret;
347 /* perform system-dependent conversions for arguments list */
348 prepare_app_arguments(&argc, &argv);
352 while (optindex < argc) {
353 opt = argv[optindex++];
355 if (handleoptions && opt[0] == '-' && opt[1] != '\0') {
356 if (opt[1] == '-' && opt[2] == '\0') {
362 if ((ret = parse_option(optctx, opt, argv[optindex], options)) < 0)
366 if (parse_arg_function)
367 parse_arg_function(optctx, opt);
372 int parse_optgroup(void *optctx, OptionGroup *g)
376 av_log(NULL, AV_LOG_DEBUG, "Parsing a group of options: %s %s.\n",
377 g->group_def->name, g->arg);
379 for (i = 0; i < g->nb_opts; i++) {
380 Option *o = &g->opts[i];
382 if (g->group_def->flags &&
383 !(g->group_def->flags & o->opt->flags)) {
384 av_log(NULL, AV_LOG_ERROR, "Option %s (%s) cannot be applied to "
385 "%s %s -- you are trying to apply an input option to an "
386 "output file or vice versa. Move this option before the "
387 "file it belongs to.\n", o->key, o->opt->help,
388 g->group_def->name, g->arg);
389 return AVERROR(EINVAL);
392 av_log(NULL, AV_LOG_DEBUG, "Applying option %s (%s) with argument %s.\n",
393 o->key, o->opt->help, o->val);
395 ret = write_option(optctx, o->opt, o->key, o->val);
400 av_log(NULL, AV_LOG_DEBUG, "Successfully parsed a group of options.\n");
405 int locate_option(int argc, char **argv, const OptionDef *options,
411 for (i = 1; i < argc; i++) {
412 const char *cur_opt = argv[i];
414 if (*cur_opt++ != '-')
417 po = find_option(options, cur_opt);
418 if (!po->name && cur_opt[0] == 'n' && cur_opt[1] == 'o')
419 po = find_option(options, cur_opt + 2);
421 if ((!po->name && !strcmp(cur_opt, optname)) ||
422 (po->name && !strcmp(optname, po->name)))
425 if (po->flags & HAS_ARG)
431 static void dump_argument(const char *a)
433 const unsigned char *p;
436 if (!((*p >= '+' && *p <= ':') || (*p >= '@' && *p <= 'Z') ||
437 *p == '_' || (*p >= 'a' && *p <= 'z')))
440 fputs(a, report_file);
443 fputc('"', report_file);
444 for (p = a; *p; p++) {
445 if (*p == '\\' || *p == '"' || *p == '$' || *p == '`')
446 fprintf(report_file, "\\%c", *p);
447 else if (*p < ' ' || *p > '~')
448 fprintf(report_file, "\\x%02x", *p);
450 fputc(*p, report_file);
452 fputc('"', report_file);
455 void parse_loglevel(int argc, char **argv, const OptionDef *options)
457 int idx = locate_option(argc, argv, options, "loglevel");
460 idx = locate_option(argc, argv, options, "v");
461 if (idx && argv[idx + 1])
462 opt_loglevel(NULL, "loglevel", argv[idx + 1]);
463 idx = locate_option(argc, argv, options, "report");
464 if ((env = getenv("FFREPORT")) || idx) {
468 fprintf(report_file, "Command line:\n");
469 for (i = 0; i < argc; i++) {
470 dump_argument(argv[i]);
471 fputc(i < argc - 1 ? ' ' : '\n', report_file);
478 #define FLAGS (o->type == AV_OPT_TYPE_FLAGS) ? AV_DICT_APPEND : 0
479 int opt_default(void *optctx, const char *opt, const char *arg)
483 char opt_stripped[128];
485 const AVClass *cc = avcodec_get_class(), *fc = avformat_get_class();
486 #if CONFIG_AVRESAMPLE
487 const AVClass *rc = avresample_get_class();
489 const AVClass *sc, *swr_class;
491 if (!strcmp(opt, "debug") || !strcmp(opt, "fdebug"))
492 av_log_set_level(AV_LOG_DEBUG);
494 if (!(p = strchr(opt, ':')))
495 p = opt + strlen(opt);
496 av_strlcpy(opt_stripped, opt, FFMIN(sizeof(opt_stripped), p - opt + 1));
498 if ((o = av_opt_find(&cc, opt_stripped, NULL, 0,
499 AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ)) ||
500 ((opt[0] == 'v' || opt[0] == 'a' || opt[0] == 's') &&
501 (o = av_opt_find(&cc, opt + 1, NULL, 0, AV_OPT_SEARCH_FAKE_OBJ)))) {
502 av_dict_set(&codec_opts, opt, arg, FLAGS);
505 if ((o = av_opt_find(&fc, opt, NULL, 0,
506 AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ))) {
507 av_dict_set(&format_opts, opt, arg, FLAGS);
509 av_log(NULL, AV_LOG_VERBOSE, "Routing option %s to both codec and muxer layer\n", opt);
513 sc = sws_get_class();
514 if (!consumed && av_opt_find(&sc, opt, NULL, 0,
515 AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ)) {
516 // XXX we only support sws_flags, not arbitrary sws options
517 int ret = av_opt_set(sws_opts, opt, arg, 0);
519 av_log(NULL, AV_LOG_ERROR, "Error setting option %s.\n", opt);
525 #if CONFIG_SWRESAMPLE
526 swr_class = swr_get_class();
527 if (!consumed && (o=av_opt_find(&swr_class, opt, NULL, 0,
528 AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ))) {
529 struct SwrContext *swr = swr_alloc();
530 int ret = av_opt_set(swr, opt, arg, 0);
533 av_log(NULL, AV_LOG_ERROR, "Error setting option %s.\n", opt);
536 av_dict_set(&swr_opts, opt, arg, FLAGS);
540 #if CONFIG_AVRESAMPLE
541 if ((o=av_opt_find(&rc, opt, NULL, 0,
542 AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ))) {
543 av_dict_set(&resample_opts, opt, arg, FLAGS);
550 av_log(NULL, AV_LOG_ERROR, "Could not find option '%s' in any of the FFmpeg subsystems "
551 "(codec, format, scaler, resampler contexts)\n", opt);
552 return AVERROR_OPTION_NOT_FOUND;
556 * Check whether given option is a group separator.
558 * @return index of the group definition that matched or -1 if none
560 static int match_group_separator(const OptionGroupDef *groups, int nb_groups,
565 for (i = 0; i < nb_groups; i++) {
566 const OptionGroupDef *p = &groups[i];
567 if (p->sep && !strcmp(p->sep, opt))
575 * Finish parsing an option group.
577 * @param group_idx which group definition should this group belong to
578 * @param arg argument of the group delimiting option
580 static void finish_group(OptionParseContext *octx, int group_idx,
583 OptionGroupList *l = &octx->groups[group_idx];
586 GROW_ARRAY(l->groups, l->nb_groups);
587 g = &l->groups[l->nb_groups - 1];
589 *g = octx->cur_group;
591 g->group_def = l->group_def;
593 g->sws_opts = sws_opts;
595 g->swr_opts = swr_opts;
596 g->codec_opts = codec_opts;
597 g->format_opts = format_opts;
598 g->resample_opts = resample_opts;
602 resample_opts = NULL;
609 memset(&octx->cur_group, 0, sizeof(octx->cur_group));
613 * Add an option instance to currently parsed group.
615 static void add_opt(OptionParseContext *octx, const OptionDef *opt,
616 const char *key, const char *val)
618 int global = !(opt->flags & (OPT_PERFILE | OPT_SPEC | OPT_OFFSET));
619 OptionGroup *g = global ? &octx->global_opts : &octx->cur_group;
621 GROW_ARRAY(g->opts, g->nb_opts);
622 g->opts[g->nb_opts - 1].opt = opt;
623 g->opts[g->nb_opts - 1].key = key;
624 g->opts[g->nb_opts - 1].val = val;
627 static void init_parse_context(OptionParseContext *octx,
628 const OptionGroupDef *groups, int nb_groups)
630 static const OptionGroupDef global_group = { "global" };
633 memset(octx, 0, sizeof(*octx));
635 octx->nb_groups = nb_groups;
636 octx->groups = av_mallocz(sizeof(*octx->groups) * octx->nb_groups);
640 for (i = 0; i < octx->nb_groups; i++)
641 octx->groups[i].group_def = &groups[i];
643 octx->global_opts.group_def = &global_group;
644 octx->global_opts.arg = "";
649 void uninit_parse_context(OptionParseContext *octx)
653 for (i = 0; i < octx->nb_groups; i++) {
654 OptionGroupList *l = &octx->groups[i];
656 for (j = 0; j < l->nb_groups; j++) {
657 av_freep(&l->groups[j].opts);
658 av_dict_free(&l->groups[j].codec_opts);
659 av_dict_free(&l->groups[j].format_opts);
660 av_dict_free(&l->groups[j].resample_opts);
662 sws_freeContext(l->groups[j].sws_opts);
664 av_dict_free(&l->groups[j].swr_opts);
666 av_freep(&l->groups);
668 av_freep(&octx->groups);
670 av_freep(&octx->cur_group.opts);
671 av_freep(&octx->global_opts.opts);
676 int split_commandline(OptionParseContext *octx, int argc, char *argv[],
677 const OptionDef *options,
678 const OptionGroupDef *groups, int nb_groups)
683 /* perform system-dependent conversions for arguments list */
684 prepare_app_arguments(&argc, &argv);
686 init_parse_context(octx, groups, nb_groups);
687 av_log(NULL, AV_LOG_DEBUG, "Splitting the commandline.\n");
689 while (optindex < argc) {
690 const char *opt = argv[optindex++], *arg;
694 av_log(NULL, AV_LOG_DEBUG, "Reading option '%s' ...", opt);
696 if (opt[0] == '-' && opt[1] == '-' && !opt[2]) {
700 /* unnamed group separators, e.g. output filename */
701 if (opt[0] != '-' || !opt[1] || dashdash+1 == optindex) {
702 finish_group(octx, 0, opt);
703 av_log(NULL, AV_LOG_DEBUG, " matched as %s.\n", groups[0].name);
708 #define GET_ARG(arg) \
710 arg = argv[optindex++]; \
712 av_log(NULL, AV_LOG_ERROR, "Missing argument for option '%s'.\n", opt);\
713 return AVERROR(EINVAL); \
717 /* named group separators, e.g. -i */
718 if ((ret = match_group_separator(groups, nb_groups, opt)) >= 0) {
720 finish_group(octx, ret, arg);
721 av_log(NULL, AV_LOG_DEBUG, " matched as %s with argument '%s'.\n",
722 groups[ret].name, arg);
727 po = find_option(options, opt);
729 if (po->flags & OPT_EXIT) {
730 /* optional argument, e.g. -h */
731 arg = argv[optindex++];
732 } else if (po->flags & HAS_ARG) {
738 add_opt(octx, po, opt, arg);
739 av_log(NULL, AV_LOG_DEBUG, " matched as option '%s' (%s) with "
740 "argument '%s'.\n", po->name, po->help, arg);
745 if (argv[optindex]) {
746 ret = opt_default(NULL, opt, argv[optindex]);
748 av_log(NULL, AV_LOG_DEBUG, " matched as AVOption '%s' with "
749 "argument '%s'.\n", opt, argv[optindex]);
752 } else if (ret != AVERROR_OPTION_NOT_FOUND) {
753 av_log(NULL, AV_LOG_ERROR, "Error parsing option '%s' "
754 "with argument '%s'.\n", opt, argv[optindex]);
759 /* boolean -nofoo options */
760 if (opt[0] == 'n' && opt[1] == 'o' &&
761 (po = find_option(options, opt + 2)) &&
762 po->name && po->flags & OPT_BOOL) {
763 add_opt(octx, po, opt, "0");
764 av_log(NULL, AV_LOG_DEBUG, " matched as option '%s' (%s) with "
765 "argument 0.\n", po->name, po->help);
769 av_log(NULL, AV_LOG_ERROR, "Unrecognized option '%s'.\n", opt);
770 return AVERROR_OPTION_NOT_FOUND;
773 if (octx->cur_group.nb_opts || codec_opts || format_opts || resample_opts)
774 av_log(NULL, AV_LOG_WARNING, "Trailing options were found on the "
777 av_log(NULL, AV_LOG_DEBUG, "Finished splitting the commandline.\n");
782 int opt_loglevel(void *optctx, const char *opt, const char *arg)
784 const struct { const char *name; int level; } log_levels[] = {
785 { "quiet" , AV_LOG_QUIET },
786 { "panic" , AV_LOG_PANIC },
787 { "fatal" , AV_LOG_FATAL },
788 { "error" , AV_LOG_ERROR },
789 { "warning", AV_LOG_WARNING },
790 { "info" , AV_LOG_INFO },
791 { "verbose", AV_LOG_VERBOSE },
792 { "debug" , AV_LOG_DEBUG },
798 for (i = 0; i < FF_ARRAY_ELEMS(log_levels); i++) {
799 if (!strcmp(log_levels[i].name, arg)) {
800 av_log_set_level(log_levels[i].level);
805 level = strtol(arg, &tail, 10);
807 av_log(NULL, AV_LOG_FATAL, "Invalid loglevel \"%s\". "
808 "Possible levels are numbers or:\n", arg);
809 for (i = 0; i < FF_ARRAY_ELEMS(log_levels); i++)
810 av_log(NULL, AV_LOG_FATAL, "\"%s\"\n", log_levels[i].name);
813 av_log_set_level(level);
817 static void expand_filename_template(AVBPrint *bp, const char *template,
822 while ((c = *(template++))) {
824 if (!(c = *(template++)))
828 av_bprintf(bp, "%s", program_name);
831 av_bprintf(bp, "%04d%02d%02d-%02d%02d%02d",
832 tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
833 tm->tm_hour, tm->tm_min, tm->tm_sec);
836 av_bprint_chars(bp, c, 1);
840 av_bprint_chars(bp, c, 1);
845 static int init_report(const char *env)
847 char *filename_template = NULL;
854 if (report_file) /* already opened */
857 tm = localtime(&now);
859 while (env && *env) {
860 if ((ret = av_opt_get_key_value(&env, "=", ":", 0, &key, &val)) < 0) {
862 av_log(NULL, AV_LOG_ERROR,
863 "Failed to parse FFREPORT environment variable: %s\n",
870 if (!strcmp(key, "file")) {
871 av_free(filename_template);
872 filename_template = val;
875 av_log(NULL, AV_LOG_ERROR, "Unknown key '%s' in FFREPORT\n", key);
881 av_bprint_init(&filename, 0, 1);
882 expand_filename_template(&filename,
883 av_x_if_null(filename_template, "%p-%t.log"), tm);
884 av_free(filename_template);
885 if (!av_bprint_is_complete(&filename)) {
886 av_log(NULL, AV_LOG_ERROR, "Out of memory building report file name\n");
887 return AVERROR(ENOMEM);
890 report_file = fopen(filename.str, "w");
892 av_log(NULL, AV_LOG_ERROR, "Failed to open report \"%s\": %s\n",
893 filename.str, strerror(errno));
894 return AVERROR(errno);
896 av_log_set_callback(log_callback_report);
897 av_log(NULL, AV_LOG_INFO,
898 "%s started on %04d-%02d-%02d at %02d:%02d:%02d\n"
899 "Report written to \"%s\"\n",
901 tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
902 tm->tm_hour, tm->tm_min, tm->tm_sec,
904 av_log_set_level(FFMAX(av_log_get_level(), AV_LOG_VERBOSE));
905 av_bprint_finalize(&filename, NULL);
909 int opt_report(const char *opt)
911 return init_report(NULL);
914 int opt_max_alloc(void *optctx, const char *opt, const char *arg)
919 max = strtol(arg, &tail, 10);
921 av_log(NULL, AV_LOG_FATAL, "Invalid max_alloc \"%s\".\n", arg);
928 int opt_cpuflags(void *optctx, const char *opt, const char *arg)
931 unsigned flags = av_get_cpu_flags();
933 if ((ret = av_parse_cpu_caps(&flags, arg)) < 0)
936 av_force_cpu_flags(flags);
940 int opt_timelimit(void *optctx, const char *opt, const char *arg)
943 int lim = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
944 struct rlimit rl = { lim, lim + 1 };
945 if (setrlimit(RLIMIT_CPU, &rl))
948 av_log(NULL, AV_LOG_WARNING, "-%s not implemented on this OS\n", opt);
953 void print_error(const char *filename, int err)
956 const char *errbuf_ptr = errbuf;
958 if (av_strerror(err, errbuf, sizeof(errbuf)) < 0)
959 errbuf_ptr = strerror(AVUNERROR(err));
960 av_log(NULL, AV_LOG_ERROR, "%s: %s\n", filename, errbuf_ptr);
963 static int warned_cfg = 0;
966 #define SHOW_VERSION 2
967 #define SHOW_CONFIG 4
968 #define SHOW_COPYRIGHT 8
970 #define PRINT_LIB_INFO(libname, LIBNAME, flags, level) \
971 if (CONFIG_##LIBNAME) { \
972 const char *indent = flags & INDENT? " " : ""; \
973 if (flags & SHOW_VERSION) { \
974 unsigned int version = libname##_version(); \
975 av_log(NULL, level, \
976 "%slib%-11s %2d.%3d.%3d / %2d.%3d.%3d\n", \
978 LIB##LIBNAME##_VERSION_MAJOR, \
979 LIB##LIBNAME##_VERSION_MINOR, \
980 LIB##LIBNAME##_VERSION_MICRO, \
981 version >> 16, version >> 8 & 0xff, version & 0xff); \
983 if (flags & SHOW_CONFIG) { \
984 const char *cfg = libname##_configuration(); \
985 if (strcmp(FFMPEG_CONFIGURATION, cfg)) { \
987 av_log(NULL, level, \
988 "%sWARNING: library configuration mismatch\n", \
992 av_log(NULL, level, "%s%-11s configuration: %s\n", \
993 indent, #libname, cfg); \
998 static void print_all_libs_info(int flags, int level)
1000 PRINT_LIB_INFO(avutil, AVUTIL, flags, level);
1001 PRINT_LIB_INFO(avcodec, AVCODEC, flags, level);
1002 PRINT_LIB_INFO(avformat, AVFORMAT, flags, level);
1003 PRINT_LIB_INFO(avdevice, AVDEVICE, flags, level);
1004 PRINT_LIB_INFO(avfilter, AVFILTER, flags, level);
1005 PRINT_LIB_INFO(avresample, AVRESAMPLE, flags, level);
1006 PRINT_LIB_INFO(swscale, SWSCALE, flags, level);
1007 PRINT_LIB_INFO(swresample,SWRESAMPLE, flags, level);
1008 PRINT_LIB_INFO(postproc, POSTPROC, flags, level);
1011 static void print_program_info(int flags, int level)
1013 const char *indent = flags & INDENT? " " : "";
1015 av_log(NULL, level, "%s version " FFMPEG_VERSION, program_name);
1016 if (flags & SHOW_COPYRIGHT)
1017 av_log(NULL, level, " Copyright (c) %d-%d the FFmpeg developers",
1018 program_birth_year, this_year);
1019 av_log(NULL, level, "\n");
1020 av_log(NULL, level, "%sbuilt on %s %s with %s\n",
1021 indent, __DATE__, __TIME__, CC_IDENT);
1023 av_log(NULL, level, "%sconfiguration: " FFMPEG_CONFIGURATION "\n", indent);
1026 void show_banner(int argc, char **argv, const OptionDef *options)
1028 int idx = locate_option(argc, argv, options, "version");
1032 print_program_info (INDENT|SHOW_COPYRIGHT, AV_LOG_INFO);
1033 print_all_libs_info(INDENT|SHOW_CONFIG, AV_LOG_INFO);
1034 print_all_libs_info(INDENT|SHOW_VERSION, AV_LOG_INFO);
1037 int show_version(void *optctx, const char *opt, const char *arg)
1039 av_log_set_callback(log_callback_help);
1040 print_program_info (0 , AV_LOG_INFO);
1041 print_all_libs_info(SHOW_VERSION, AV_LOG_INFO);
1046 int show_license(void *optctx, const char *opt, const char *arg)
1050 "This version of %s has nonfree parts compiled in.\n"
1051 "Therefore it is not legally redistributable.\n",
1055 "%s is free software; you can redistribute it and/or modify\n"
1056 "it under the terms of the GNU General Public License as published by\n"
1057 "the Free Software Foundation; either version 3 of the License, or\n"
1058 "(at your option) any later version.\n"
1060 "%s is distributed in the hope that it will be useful,\n"
1061 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
1062 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
1063 "GNU General Public License for more details.\n"
1065 "You should have received a copy of the GNU General Public License\n"
1066 "along with %s. If not, see <http://www.gnu.org/licenses/>.\n",
1067 program_name, program_name, program_name );
1070 "%s is free software; you can redistribute it and/or modify\n"
1071 "it under the terms of the GNU General Public License as published by\n"
1072 "the Free Software Foundation; either version 2 of the License, or\n"
1073 "(at your option) any later version.\n"
1075 "%s is distributed in the hope that it will be useful,\n"
1076 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
1077 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
1078 "GNU General Public License for more details.\n"
1080 "You should have received a copy of the GNU General Public License\n"
1081 "along with %s; if not, write to the Free Software\n"
1082 "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n",
1083 program_name, program_name, program_name );
1086 "%s is free software; you can redistribute it and/or modify\n"
1087 "it under the terms of the GNU Lesser General Public License as published by\n"
1088 "the Free Software Foundation; either version 3 of the License, or\n"
1089 "(at your option) any later version.\n"
1091 "%s is distributed in the hope that it will be useful,\n"
1092 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
1093 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
1094 "GNU Lesser General Public License for more details.\n"
1096 "You should have received a copy of the GNU Lesser General Public License\n"
1097 "along with %s. If not, see <http://www.gnu.org/licenses/>.\n",
1098 program_name, program_name, program_name );
1101 "%s is free software; you can redistribute it and/or\n"
1102 "modify it under the terms of the GNU Lesser General Public\n"
1103 "License as published by the Free Software Foundation; either\n"
1104 "version 2.1 of the License, or (at your option) any later version.\n"
1106 "%s is distributed in the hope that it will be useful,\n"
1107 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
1108 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU\n"
1109 "Lesser General Public License for more details.\n"
1111 "You should have received a copy of the GNU Lesser General Public\n"
1112 "License along with %s; if not, write to the Free Software\n"
1113 "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n",
1114 program_name, program_name, program_name );
1120 int show_formats(void *optctx, const char *opt, const char *arg)
1122 AVInputFormat *ifmt = NULL;
1123 AVOutputFormat *ofmt = NULL;
1124 const char *last_name;
1126 printf("File formats:\n"
1127 " D. = Demuxing supported\n"
1128 " .E = Muxing supported\n"
1134 const char *name = NULL;
1135 const char *long_name = NULL;
1137 while ((ofmt = av_oformat_next(ofmt))) {
1138 if ((name == NULL || strcmp(ofmt->name, name) < 0) &&
1139 strcmp(ofmt->name, last_name) > 0) {
1141 long_name = ofmt->long_name;
1145 while ((ifmt = av_iformat_next(ifmt))) {
1146 if ((name == NULL || strcmp(ifmt->name, name) < 0) &&
1147 strcmp(ifmt->name, last_name) > 0) {
1149 long_name = ifmt->long_name;
1152 if (name && strcmp(ifmt->name, name) == 0)
1159 printf(" %s%s %-15s %s\n",
1163 long_name ? long_name:" ");
1168 #define PRINT_CODEC_SUPPORTED(codec, field, type, list_name, term, get_name) \
1169 if (codec->field) { \
1170 const type *p = codec->field; \
1172 printf(" Supported " list_name ":"); \
1173 while (*p != term) { \
1175 printf(" %s", name); \
1181 static void print_codec(const AVCodec *c)
1183 int encoder = av_codec_is_encoder(c);
1185 printf("%s %s [%s]:\n", encoder ? "Encoder" : "Decoder", c->name,
1186 c->long_name ? c->long_name : "");
1188 if (c->type == AVMEDIA_TYPE_VIDEO) {
1189 printf(" Threading capabilities: ");
1190 switch (c->capabilities & (CODEC_CAP_FRAME_THREADS |
1191 CODEC_CAP_SLICE_THREADS)) {
1192 case CODEC_CAP_FRAME_THREADS |
1193 CODEC_CAP_SLICE_THREADS: printf("frame and slice"); break;
1194 case CODEC_CAP_FRAME_THREADS: printf("frame"); break;
1195 case CODEC_CAP_SLICE_THREADS: printf("slice"); break;
1196 default: printf("no"); break;
1201 if (c->supported_framerates) {
1202 const AVRational *fps = c->supported_framerates;
1204 printf(" Supported framerates:");
1206 printf(" %d/%d", fps->num, fps->den);
1211 PRINT_CODEC_SUPPORTED(c, pix_fmts, enum AVPixelFormat, "pixel formats",
1212 AV_PIX_FMT_NONE, GET_PIX_FMT_NAME);
1213 PRINT_CODEC_SUPPORTED(c, supported_samplerates, int, "sample rates", 0,
1214 GET_SAMPLE_RATE_NAME);
1215 PRINT_CODEC_SUPPORTED(c, sample_fmts, enum AVSampleFormat, "sample formats",
1216 AV_SAMPLE_FMT_NONE, GET_SAMPLE_FMT_NAME);
1217 PRINT_CODEC_SUPPORTED(c, channel_layouts, uint64_t, "channel layouts",
1218 0, GET_CH_LAYOUT_DESC);
1220 if (c->priv_class) {
1221 show_help_children(c->priv_class,
1222 AV_OPT_FLAG_ENCODING_PARAM |
1223 AV_OPT_FLAG_DECODING_PARAM);
1227 static char get_media_type_char(enum AVMediaType type)
1230 case AVMEDIA_TYPE_VIDEO: return 'V';
1231 case AVMEDIA_TYPE_AUDIO: return 'A';
1232 case AVMEDIA_TYPE_DATA: return 'D';
1233 case AVMEDIA_TYPE_SUBTITLE: return 'S';
1234 case AVMEDIA_TYPE_ATTACHMENT:return 'T';
1235 default: return '?';
1239 static const AVCodec *next_codec_for_id(enum AVCodecID id, const AVCodec *prev,
1242 while ((prev = av_codec_next(prev))) {
1243 if (prev->id == id &&
1244 (encoder ? av_codec_is_encoder(prev) : av_codec_is_decoder(prev)))
1250 static int compare_codec_desc(const void *a, const void *b)
1252 const AVCodecDescriptor * const *da = a;
1253 const AVCodecDescriptor * const *db = b;
1255 return (*da)->type != (*db)->type ? (*da)->type - (*db)->type :
1256 strcmp((*da)->name, (*db)->name);
1259 static unsigned get_codecs_sorted(const AVCodecDescriptor ***rcodecs)
1261 const AVCodecDescriptor *desc = NULL;
1262 const AVCodecDescriptor **codecs;
1263 unsigned nb_codecs = 0, i = 0;
1265 while ((desc = avcodec_descriptor_next(desc)))
1267 if (!(codecs = av_calloc(nb_codecs, sizeof(*codecs)))) {
1268 av_log(NULL, AV_LOG_ERROR, "Out of memory\n");
1272 while ((desc = avcodec_descriptor_next(desc)))
1274 av_assert0(i == nb_codecs);
1275 qsort(codecs, nb_codecs, sizeof(*codecs), compare_codec_desc);
1280 static void print_codecs_for_id(enum AVCodecID id, int encoder)
1282 const AVCodec *codec = NULL;
1284 printf(" (%s: ", encoder ? "encoders" : "decoders");
1286 while ((codec = next_codec_for_id(id, codec, encoder)))
1287 printf("%s ", codec->name);
1292 int show_codecs(void *optctx, const char *opt, const char *arg)
1294 const AVCodecDescriptor **codecs;
1295 unsigned i, nb_codecs = get_codecs_sorted(&codecs);
1298 " D..... = Decoding supported\n"
1299 " .E.... = Encoding supported\n"
1300 " ..V... = Video codec\n"
1301 " ..A... = Audio codec\n"
1302 " ..S... = Subtitle codec\n"
1303 " ...I.. = Intra frame-only codec\n"
1304 " ....L. = Lossy compression\n"
1305 " .....S = Lossless compression\n"
1307 for (i = 0; i < nb_codecs; i++) {
1308 const AVCodecDescriptor *desc = codecs[i];
1309 const AVCodec *codec = NULL;
1312 printf(avcodec_find_decoder(desc->id) ? "D" : ".");
1313 printf(avcodec_find_encoder(desc->id) ? "E" : ".");
1315 printf("%c", get_media_type_char(desc->type));
1316 printf((desc->props & AV_CODEC_PROP_INTRA_ONLY) ? "I" : ".");
1317 printf((desc->props & AV_CODEC_PROP_LOSSY) ? "L" : ".");
1318 printf((desc->props & AV_CODEC_PROP_LOSSLESS) ? "S" : ".");
1320 printf(" %-20s %s", desc->name, desc->long_name ? desc->long_name : "");
1322 /* print decoders/encoders when there's more than one or their
1323 * names are different from codec name */
1324 while ((codec = next_codec_for_id(desc->id, codec, 0))) {
1325 if (strcmp(codec->name, desc->name)) {
1326 print_codecs_for_id(desc->id, 0);
1331 while ((codec = next_codec_for_id(desc->id, codec, 1))) {
1332 if (strcmp(codec->name, desc->name)) {
1333 print_codecs_for_id(desc->id, 1);
1344 static void print_codecs(int encoder)
1346 const AVCodecDescriptor **codecs;
1347 unsigned i, nb_codecs = get_codecs_sorted(&codecs);
1352 " S..... = Subtitle\n"
1353 " .F.... = Frame-level multithreading\n"
1354 " ..S... = Slice-level multithreading\n"
1355 " ...X.. = Codec is experimental\n"
1356 " ....B. = Supports draw_horiz_band\n"
1357 " .....D = Supports direct rendering method 1\n"
1359 encoder ? "Encoders" : "Decoders");
1360 for (i = 0; i < nb_codecs; i++) {
1361 const AVCodecDescriptor *desc = codecs[i];
1362 const AVCodec *codec = NULL;
1364 while ((codec = next_codec_for_id(desc->id, codec, encoder))) {
1365 printf(" %c", get_media_type_char(desc->type));
1366 printf((codec->capabilities & CODEC_CAP_FRAME_THREADS) ? "F" : ".");
1367 printf((codec->capabilities & CODEC_CAP_SLICE_THREADS) ? "S" : ".");
1368 printf((codec->capabilities & CODEC_CAP_EXPERIMENTAL) ? "X" : ".");
1369 printf((codec->capabilities & CODEC_CAP_DRAW_HORIZ_BAND)?"B" : ".");
1370 printf((codec->capabilities & CODEC_CAP_DR1) ? "D" : ".");
1372 printf(" %-20s %s", codec->name, codec->long_name ? codec->long_name : "");
1373 if (strcmp(codec->name, desc->name))
1374 printf(" (codec %s)", desc->name);
1382 int show_decoders(void *optctx, const char *opt, const char *arg)
1388 int show_encoders(void *optctx, const char *opt, const char *arg)
1394 int show_bsfs(void *optctx, const char *opt, const char *arg)
1396 AVBitStreamFilter *bsf = NULL;
1398 printf("Bitstream filters:\n");
1399 while ((bsf = av_bitstream_filter_next(bsf)))
1400 printf("%s\n", bsf->name);
1405 int show_protocols(void *optctx, const char *opt, const char *arg)
1407 void *opaque = NULL;
1410 printf("Supported file protocols:\n"
1412 while ((name = avio_enum_protocols(&opaque, 0)))
1413 printf("%s\n", name);
1414 printf("Output:\n");
1415 while ((name = avio_enum_protocols(&opaque, 1)))
1416 printf("%s\n", name);
1420 int show_filters(void *optctx, const char *opt, const char *arg)
1422 AVFilter av_unused(**filter) = NULL;
1423 char descr[64], *descr_cur;
1425 const AVFilterPad *pad;
1427 printf("Filters:\n");
1429 while ((filter = av_filter_next(filter)) && *filter) {
1431 for (i = 0; i < 2; i++) {
1433 *(descr_cur++) = '-';
1434 *(descr_cur++) = '>';
1436 pad = i ? (*filter)->outputs : (*filter)->inputs;
1437 for (j = 0; pad && pad[j].name; j++) {
1438 if (descr_cur >= descr + sizeof(descr) - 4)
1440 *(descr_cur++) = get_media_type_char(pad[j].type);
1443 *(descr_cur++) = '|';
1446 printf("%-16s %-10s %s\n", (*filter)->name, descr, (*filter)->description);
1452 int show_pix_fmts(void *optctx, const char *opt, const char *arg)
1454 const AVPixFmtDescriptor *pix_desc = NULL;
1456 printf("Pixel formats:\n"
1457 "I.... = Supported Input format for conversion\n"
1458 ".O... = Supported Output format for conversion\n"
1459 "..H.. = Hardware accelerated format\n"
1460 "...P. = Paletted format\n"
1461 "....B = Bitstream format\n"
1462 "FLAGS NAME NB_COMPONENTS BITS_PER_PIXEL\n"
1466 # define sws_isSupportedInput(x) 0
1467 # define sws_isSupportedOutput(x) 0
1470 while ((pix_desc = av_pix_fmt_desc_next(pix_desc))) {
1471 enum AVPixelFormat pix_fmt = av_pix_fmt_desc_get_id(pix_desc);
1472 printf("%c%c%c%c%c %-16s %d %2d\n",
1473 sws_isSupportedInput (pix_fmt) ? 'I' : '.',
1474 sws_isSupportedOutput(pix_fmt) ? 'O' : '.',
1475 pix_desc->flags & PIX_FMT_HWACCEL ? 'H' : '.',
1476 pix_desc->flags & PIX_FMT_PAL ? 'P' : '.',
1477 pix_desc->flags & PIX_FMT_BITSTREAM ? 'B' : '.',
1479 pix_desc->nb_components,
1480 av_get_bits_per_pixel(pix_desc));
1485 int show_layouts(void *optctx, const char *opt, const char *arg)
1489 const char *name, *descr;
1491 printf("Individual channels:\n"
1492 "NAME DESCRIPTION\n");
1493 for (i = 0; i < 63; i++) {
1494 name = av_get_channel_name((uint64_t)1 << i);
1497 descr = av_get_channel_description((uint64_t)1 << i);
1498 printf("%-12s%s\n", name, descr);
1500 printf("\nStandard channel layouts:\n"
1501 "NAME DECOMPOSITION\n");
1502 for (i = 0; !av_get_standard_channel_layout(i, &layout, &name); i++) {
1504 printf("%-12s", name);
1505 for (j = 1; j; j <<= 1)
1507 printf("%s%s", (layout & (j - 1)) ? "+" : "", av_get_channel_name(j));
1514 int show_sample_fmts(void *optctx, const char *opt, const char *arg)
1518 for (i = -1; i < AV_SAMPLE_FMT_NB; i++)
1519 printf("%s\n", av_get_sample_fmt_string(fmt_str, sizeof(fmt_str), i));
1523 static void show_help_codec(const char *name, int encoder)
1525 const AVCodecDescriptor *desc;
1526 const AVCodec *codec;
1529 av_log(NULL, AV_LOG_ERROR, "No codec name specified.\n");
1533 codec = encoder ? avcodec_find_encoder_by_name(name) :
1534 avcodec_find_decoder_by_name(name);
1538 else if ((desc = avcodec_descriptor_get_by_name(name))) {
1541 while ((codec = next_codec_for_id(desc->id, codec, encoder))) {
1547 av_log(NULL, AV_LOG_ERROR, "Codec '%s' is known to FFmpeg, "
1548 "but no %s for it are available. FFmpeg might need to be "
1549 "recompiled with additional external libraries.\n",
1550 name, encoder ? "encoders" : "decoders");
1553 av_log(NULL, AV_LOG_ERROR, "Codec '%s' is not recognized by FFmpeg.\n",
1558 static void show_help_demuxer(const char *name)
1560 const AVInputFormat *fmt = av_find_input_format(name);
1563 av_log(NULL, AV_LOG_ERROR, "Unknown format '%s'.\n", name);
1567 printf("Demuxer %s [%s]:\n", fmt->name, fmt->long_name);
1569 if (fmt->extensions)
1570 printf(" Common extensions: %s.\n", fmt->extensions);
1572 if (fmt->priv_class)
1573 show_help_children(fmt->priv_class, AV_OPT_FLAG_DECODING_PARAM);
1576 static void show_help_muxer(const char *name)
1578 const AVCodecDescriptor *desc;
1579 const AVOutputFormat *fmt = av_guess_format(name, NULL, NULL);
1582 av_log(NULL, AV_LOG_ERROR, "Unknown format '%s'.\n", name);
1586 printf("Muxer %s [%s]:\n", fmt->name, fmt->long_name);
1588 if (fmt->extensions)
1589 printf(" Common extensions: %s.\n", fmt->extensions);
1591 printf(" Mime type: %s.\n", fmt->mime_type);
1592 if (fmt->video_codec != AV_CODEC_ID_NONE &&
1593 (desc = avcodec_descriptor_get(fmt->video_codec))) {
1594 printf(" Default video codec: %s.\n", desc->name);
1596 if (fmt->audio_codec != AV_CODEC_ID_NONE &&
1597 (desc = avcodec_descriptor_get(fmt->audio_codec))) {
1598 printf(" Default audio codec: %s.\n", desc->name);
1600 if (fmt->subtitle_codec != AV_CODEC_ID_NONE &&
1601 (desc = avcodec_descriptor_get(fmt->subtitle_codec))) {
1602 printf(" Default subtitle codec: %s.\n", desc->name);
1605 if (fmt->priv_class)
1606 show_help_children(fmt->priv_class, AV_OPT_FLAG_ENCODING_PARAM);
1609 int show_help(void *optctx, const char *opt, const char *arg)
1612 av_log_set_callback(log_callback_help);
1614 topic = av_strdup(arg ? arg : "");
1615 par = strchr(topic, '=');
1620 show_help_default(topic, par);
1621 } else if (!strcmp(topic, "decoder")) {
1622 show_help_codec(par, 0);
1623 } else if (!strcmp(topic, "encoder")) {
1624 show_help_codec(par, 1);
1625 } else if (!strcmp(topic, "demuxer")) {
1626 show_help_demuxer(par);
1627 } else if (!strcmp(topic, "muxer")) {
1628 show_help_muxer(par);
1630 show_help_default(topic, par);
1637 int read_yesno(void)
1640 int yesno = (av_toupper(c) == 'Y');
1642 while (c != '\n' && c != EOF)
1648 int cmdutils_read_file(const char *filename, char **bufptr, size_t *size)
1651 FILE *f = fopen(filename, "rb");
1654 av_log(NULL, AV_LOG_ERROR, "Cannot read file '%s': %s\n", filename,
1656 return AVERROR(errno);
1658 fseek(f, 0, SEEK_END);
1660 fseek(f, 0, SEEK_SET);
1661 if (*size == (size_t)-1) {
1662 av_log(NULL, AV_LOG_ERROR, "IO error: %s\n", strerror(errno));
1664 return AVERROR(errno);
1666 *bufptr = av_malloc(*size + 1);
1668 av_log(NULL, AV_LOG_ERROR, "Could not allocate file buffer\n");
1670 return AVERROR(ENOMEM);
1672 ret = fread(*bufptr, 1, *size, f);
1676 av_log(NULL, AV_LOG_ERROR, "Error while reading file '%s': %s\n",
1677 filename, strerror(errno));
1678 ret = AVERROR(errno);
1683 (*bufptr)[(*size)++] = '\0';
1690 FILE *get_preset_file(char *filename, size_t filename_size,
1691 const char *preset_name, int is_path,
1692 const char *codec_name)
1696 const char *base[3] = { getenv("FFMPEG_DATADIR"),
1701 av_strlcpy(filename, preset_name, filename_size);
1702 f = fopen(filename, "r");
1705 char datadir[MAX_PATH], *ls;
1708 if (GetModuleFileNameA(GetModuleHandleA(NULL), datadir, sizeof(datadir) - 1))
1710 for (ls = datadir; ls < datadir + strlen(datadir); ls++)
1711 if (*ls == '\\') *ls = '/';
1713 if (ls = strrchr(datadir, '/'))
1716 strncat(datadir, "/ffpresets", sizeof(datadir) - 1 - strlen(datadir));
1721 for (i = 0; i < 3 && !f; i++) {
1724 snprintf(filename, filename_size, "%s%s/%s.ffpreset", base[i],
1725 i != 1 ? "" : "/.ffmpeg", preset_name);
1726 f = fopen(filename, "r");
1727 if (!f && codec_name) {
1728 snprintf(filename, filename_size,
1729 "%s%s/%s-%s.ffpreset",
1730 base[i], i != 1 ? "" : "/.ffmpeg", codec_name,
1732 f = fopen(filename, "r");
1740 int check_stream_specifier(AVFormatContext *s, AVStream *st, const char *spec)
1742 int ret = avformat_match_stream_specifier(s, st, spec);
1744 av_log(s, AV_LOG_ERROR, "Invalid stream specifier: %s.\n", spec);
1748 AVDictionary *filter_codec_opts(AVDictionary *opts, enum AVCodecID codec_id,
1749 AVFormatContext *s, AVStream *st, AVCodec *codec)
1751 AVDictionary *ret = NULL;
1752 AVDictionaryEntry *t = NULL;
1753 int flags = s->oformat ? AV_OPT_FLAG_ENCODING_PARAM
1754 : AV_OPT_FLAG_DECODING_PARAM;
1756 const AVClass *cc = avcodec_get_class();
1759 codec = s->oformat ? avcodec_find_encoder(codec_id)
1760 : avcodec_find_decoder(codec_id);
1762 switch (st->codec->codec_type) {
1763 case AVMEDIA_TYPE_VIDEO:
1765 flags |= AV_OPT_FLAG_VIDEO_PARAM;
1767 case AVMEDIA_TYPE_AUDIO:
1769 flags |= AV_OPT_FLAG_AUDIO_PARAM;
1771 case AVMEDIA_TYPE_SUBTITLE:
1773 flags |= AV_OPT_FLAG_SUBTITLE_PARAM;
1777 while (t = av_dict_get(opts, "", t, AV_DICT_IGNORE_SUFFIX)) {
1778 char *p = strchr(t->key, ':');
1780 /* check stream specification in opt name */
1782 switch (check_stream_specifier(s, st, p + 1)) {
1783 case 1: *p = 0; break;
1785 default: return NULL;
1788 if (av_opt_find(&cc, t->key, NULL, flags, AV_OPT_SEARCH_FAKE_OBJ) ||
1789 (codec && codec->priv_class &&
1790 av_opt_find(&codec->priv_class, t->key, NULL, flags,
1791 AV_OPT_SEARCH_FAKE_OBJ)))
1792 av_dict_set(&ret, t->key, t->value, 0);
1793 else if (t->key[0] == prefix &&
1794 av_opt_find(&cc, t->key + 1, NULL, flags,
1795 AV_OPT_SEARCH_FAKE_OBJ))
1796 av_dict_set(&ret, t->key + 1, t->value, 0);
1804 AVDictionary **setup_find_stream_info_opts(AVFormatContext *s,
1805 AVDictionary *codec_opts)
1808 AVDictionary **opts;
1812 opts = av_mallocz(s->nb_streams * sizeof(*opts));
1814 av_log(NULL, AV_LOG_ERROR,
1815 "Could not alloc memory for stream options.\n");
1818 for (i = 0; i < s->nb_streams; i++)
1819 opts[i] = filter_codec_opts(codec_opts, s->streams[i]->codec->codec_id,
1820 s, s->streams[i], NULL);
1824 void *grow_array(void *array, int elem_size, int *size, int new_size)
1826 if (new_size >= INT_MAX / elem_size) {
1827 av_log(NULL, AV_LOG_ERROR, "Array too big.\n");
1830 if (*size < new_size) {
1831 uint8_t *tmp = av_realloc(array, new_size*elem_size);
1833 av_log(NULL, AV_LOG_ERROR, "Could not alloc buffer.\n");
1836 memset(tmp + *size*elem_size, 0, (new_size-*size) * elem_size);