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
28 /* Include only the enabled headers since some compilers (namely, Sun
29 Studio) will not omit unused inline functions and create undefined
30 references to libraries that are not being built. */
33 #include "compat/va_copy.h"
34 #include "libavformat/avformat.h"
35 #include "libavfilter/avfilter.h"
36 #include "libavdevice/avdevice.h"
37 #include "libavresample/avresample.h"
38 #include "libswscale/swscale.h"
39 #include "libswresample/swresample.h"
40 #include "libpostproc/postprocess.h"
41 #include "libavutil/avassert.h"
42 #include "libavutil/avstring.h"
43 #include "libavutil/bprint.h"
44 #include "libavutil/mathematics.h"
45 #include "libavutil/imgutils.h"
46 #include "libavutil/parseutils.h"
47 #include "libavutil/pixdesc.h"
48 #include "libavutil/eval.h"
49 #include "libavutil/dict.h"
50 #include "libavutil/opt.h"
51 #include "libavutil/cpu.h"
52 #include "libavutil/ffversion.h"
55 #include "libavformat/network.h"
57 #if HAVE_SYS_RESOURCE_H
59 #include <sys/resource.h>
62 static int init_report(const char *env);
64 struct SwsContext *sws_opts;
65 AVDictionary *swr_opts;
66 AVDictionary *format_opts, *codec_opts, *resample_opts;
68 static FILE *report_file;
75 sws_opts = sws_getContext(16, 16, 0, 16, 16, 0, SWS_BICUBIC,
79 void uninit_opts(void)
82 sws_freeContext(sws_opts);
86 av_dict_free(&swr_opts);
87 av_dict_free(&format_opts);
88 av_dict_free(&codec_opts);
89 av_dict_free(&resample_opts);
92 void log_callback_help(void *ptr, int level, const char *fmt, va_list vl)
94 vfprintf(stdout, fmt, vl);
97 static void log_callback_report(void *ptr, int level, const char *fmt, va_list vl)
101 static int print_prefix = 1;
104 av_log_default_callback(ptr, level, fmt, vl);
105 av_log_format_line(ptr, level, fmt, vl2, line, sizeof(line), &print_prefix);
107 fputs(line, report_file);
111 static void (*program_exit)(int ret);
113 void register_exit(void (*cb)(int ret))
118 void exit_program(int ret)
126 double parse_number_or_die(const char *context, const char *numstr, int type,
127 double min, double max)
131 double d = av_strtod(numstr, &tail);
133 error = "Expected number for %s but found: %s\n";
134 else if (d < min || d > max)
135 error = "The value for %s was %s which is not within %f - %f\n";
136 else if (type == OPT_INT64 && (int64_t)d != d)
137 error = "Expected int64 for %s but found %s\n";
138 else if (type == OPT_INT && (int)d != d)
139 error = "Expected int for %s but found %s\n";
142 av_log(NULL, AV_LOG_FATAL, error, context, numstr, min, max);
147 int64_t parse_time_or_die(const char *context, const char *timestr,
151 if (av_parse_time(&us, timestr, is_duration) < 0) {
152 av_log(NULL, AV_LOG_FATAL, "Invalid %s specification for %s: %s\n",
153 is_duration ? "duration" : "date", context, timestr);
159 void show_help_options(const OptionDef *options, const char *msg, int req_flags,
160 int rej_flags, int alt_flags)
166 for (po = options; po->name != NULL; po++) {
169 if (((po->flags & req_flags) != req_flags) ||
170 (alt_flags && !(po->flags & alt_flags)) ||
171 (po->flags & rej_flags))
178 av_strlcpy(buf, po->name, sizeof(buf));
180 av_strlcat(buf, " ", sizeof(buf));
181 av_strlcat(buf, po->argname, sizeof(buf));
183 printf("-%-17s %s\n", buf, po->help);
188 void show_help_children(const AVClass *class, int flags)
190 const AVClass *child = NULL;
192 av_opt_show2(&class, NULL, flags, 0);
196 while (child = av_opt_child_class_next(class, child))
197 show_help_children(child, flags);
200 static const OptionDef *find_option(const OptionDef *po, const char *name)
202 const char *p = strchr(name, ':');
203 int len = p ? p - name : strlen(name);
205 while (po->name != NULL) {
206 if (!strncmp(name, po->name, len) && strlen(po->name) == len)
213 /* _WIN32 means using the windows libc - cygwin doesn't define that
214 * by default. HAVE_COMMANDLINETOARGVW is true on cygwin, while
215 * it doesn't provide the actual command line via GetCommandLineW(). */
216 #if HAVE_COMMANDLINETOARGVW && defined(_WIN32)
218 #include <shellapi.h>
219 /* Will be leaked on exit */
220 static char** win32_argv_utf8 = NULL;
221 static int win32_argc = 0;
224 * Prepare command line arguments for executable.
225 * For Windows - perform wide-char to UTF-8 conversion.
226 * Input arguments should be main() function arguments.
227 * @param argc_ptr Arguments number (including executable)
228 * @param argv_ptr Arguments list.
230 static void prepare_app_arguments(int *argc_ptr, char ***argv_ptr)
234 int i, buffsize = 0, offset = 0;
236 if (win32_argv_utf8) {
237 *argc_ptr = win32_argc;
238 *argv_ptr = win32_argv_utf8;
243 argv_w = CommandLineToArgvW(GetCommandLineW(), &win32_argc);
244 if (win32_argc <= 0 || !argv_w)
247 /* determine the UTF-8 buffer size (including NULL-termination symbols) */
248 for (i = 0; i < win32_argc; i++)
249 buffsize += WideCharToMultiByte(CP_UTF8, 0, argv_w[i], -1,
250 NULL, 0, NULL, NULL);
252 win32_argv_utf8 = av_mallocz(sizeof(char *) * (win32_argc + 1) + buffsize);
253 argstr_flat = (char *)win32_argv_utf8 + sizeof(char *) * (win32_argc + 1);
254 if (win32_argv_utf8 == NULL) {
259 for (i = 0; i < win32_argc; i++) {
260 win32_argv_utf8[i] = &argstr_flat[offset];
261 offset += WideCharToMultiByte(CP_UTF8, 0, argv_w[i], -1,
262 &argstr_flat[offset],
263 buffsize - offset, NULL, NULL);
265 win32_argv_utf8[i] = NULL;
268 *argc_ptr = win32_argc;
269 *argv_ptr = win32_argv_utf8;
272 static inline void prepare_app_arguments(int *argc_ptr, char ***argv_ptr)
276 #endif /* HAVE_COMMANDLINETOARGVW */
278 static int write_option(void *optctx, const OptionDef *po, const char *opt,
281 /* new-style options contain an offset into optctx, old-style address of
283 void *dst = po->flags & (OPT_OFFSET | OPT_SPEC) ?
284 (uint8_t *)optctx + po->u.off : po->u.dst_ptr;
287 if (po->flags & OPT_SPEC) {
288 SpecifierOpt **so = dst;
289 char *p = strchr(opt, ':');
291 dstcount = (int *)(so + 1);
292 *so = grow_array(*so, sizeof(**so), dstcount, *dstcount + 1);
293 (*so)[*dstcount - 1].specifier = av_strdup(p ? p + 1 : "");
294 dst = &(*so)[*dstcount - 1].u;
297 if (po->flags & OPT_STRING) {
299 str = av_strdup(arg);
302 } else if (po->flags & OPT_BOOL || po->flags & OPT_INT) {
303 *(int *)dst = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
304 } else if (po->flags & OPT_INT64) {
305 *(int64_t *)dst = parse_number_or_die(opt, arg, OPT_INT64, INT64_MIN, INT64_MAX);
306 } else if (po->flags & OPT_TIME) {
307 *(int64_t *)dst = parse_time_or_die(opt, arg, 1);
308 } else if (po->flags & OPT_FLOAT) {
309 *(float *)dst = parse_number_or_die(opt, arg, OPT_FLOAT, -INFINITY, INFINITY);
310 } else if (po->flags & OPT_DOUBLE) {
311 *(double *)dst = parse_number_or_die(opt, arg, OPT_DOUBLE, -INFINITY, INFINITY);
312 } else if (po->u.func_arg) {
313 int ret = po->u.func_arg(optctx, opt, arg);
315 av_log(NULL, AV_LOG_ERROR,
316 "Failed to set value '%s' for option '%s': %s\n",
317 arg, opt, av_err2str(ret));
321 if (po->flags & OPT_EXIT)
327 int parse_option(void *optctx, const char *opt, const char *arg,
328 const OptionDef *options)
333 po = find_option(options, opt);
334 if (!po->name && opt[0] == 'n' && opt[1] == 'o') {
335 /* handle 'no' bool option */
336 po = find_option(options, opt + 2);
337 if ((po->name && (po->flags & OPT_BOOL)))
339 } else if (po->flags & OPT_BOOL)
343 po = find_option(options, "default");
345 av_log(NULL, AV_LOG_ERROR, "Unrecognized option '%s'\n", opt);
346 return AVERROR(EINVAL);
348 if (po->flags & HAS_ARG && !arg) {
349 av_log(NULL, AV_LOG_ERROR, "Missing argument for option '%s'\n", opt);
350 return AVERROR(EINVAL);
353 ret = write_option(optctx, po, opt, arg);
357 return !!(po->flags & HAS_ARG);
360 void parse_options(void *optctx, int argc, char **argv, const OptionDef *options,
361 void (*parse_arg_function)(void *, const char*))
364 int optindex, handleoptions = 1, ret;
366 /* perform system-dependent conversions for arguments list */
367 prepare_app_arguments(&argc, &argv);
371 while (optindex < argc) {
372 opt = argv[optindex++];
374 if (handleoptions && opt[0] == '-' && opt[1] != '\0') {
375 if (opt[1] == '-' && opt[2] == '\0') {
381 if ((ret = parse_option(optctx, opt, argv[optindex], options)) < 0)
385 if (parse_arg_function)
386 parse_arg_function(optctx, opt);
391 int parse_optgroup(void *optctx, OptionGroup *g)
395 av_log(NULL, AV_LOG_DEBUG, "Parsing a group of options: %s %s.\n",
396 g->group_def->name, g->arg);
398 for (i = 0; i < g->nb_opts; i++) {
399 Option *o = &g->opts[i];
401 if (g->group_def->flags &&
402 !(g->group_def->flags & o->opt->flags)) {
403 av_log(NULL, AV_LOG_ERROR, "Option %s (%s) cannot be applied to "
404 "%s %s -- you are trying to apply an input option to an "
405 "output file or vice versa. Move this option before the "
406 "file it belongs to.\n", o->key, o->opt->help,
407 g->group_def->name, g->arg);
408 return AVERROR(EINVAL);
411 av_log(NULL, AV_LOG_DEBUG, "Applying option %s (%s) with argument %s.\n",
412 o->key, o->opt->help, o->val);
414 ret = write_option(optctx, o->opt, o->key, o->val);
419 av_log(NULL, AV_LOG_DEBUG, "Successfully parsed a group of options.\n");
424 int locate_option(int argc, char **argv, const OptionDef *options,
430 for (i = 1; i < argc; i++) {
431 const char *cur_opt = argv[i];
433 if (*cur_opt++ != '-')
436 po = find_option(options, cur_opt);
437 if (!po->name && cur_opt[0] == 'n' && cur_opt[1] == 'o')
438 po = find_option(options, cur_opt + 2);
440 if ((!po->name && !strcmp(cur_opt, optname)) ||
441 (po->name && !strcmp(optname, po->name)))
444 if (po->flags & HAS_ARG)
450 static void dump_argument(const char *a)
452 const unsigned char *p;
455 if (!((*p >= '+' && *p <= ':') || (*p >= '@' && *p <= 'Z') ||
456 *p == '_' || (*p >= 'a' && *p <= 'z')))
459 fputs(a, report_file);
462 fputc('"', report_file);
463 for (p = a; *p; p++) {
464 if (*p == '\\' || *p == '"' || *p == '$' || *p == '`')
465 fprintf(report_file, "\\%c", *p);
466 else if (*p < ' ' || *p > '~')
467 fprintf(report_file, "\\x%02x", *p);
469 fputc(*p, report_file);
471 fputc('"', report_file);
474 void parse_loglevel(int argc, char **argv, const OptionDef *options)
476 int idx = locate_option(argc, argv, options, "loglevel");
479 idx = locate_option(argc, argv, options, "v");
480 if (idx && argv[idx + 1])
481 opt_loglevel(NULL, "loglevel", argv[idx + 1]);
482 idx = locate_option(argc, argv, options, "report");
483 if ((env = getenv("FFREPORT")) || idx) {
487 fprintf(report_file, "Command line:\n");
488 for (i = 0; i < argc; i++) {
489 dump_argument(argv[i]);
490 fputc(i < argc - 1 ? ' ' : '\n', report_file);
495 idx = locate_option(argc, argv, options, "hide_banner");
500 static const AVOption *opt_find(void *obj, const char *name, const char *unit,
501 int opt_flags, int search_flags)
503 const AVOption *o = av_opt_find(obj, name, unit, opt_flags, search_flags);
509 #define FLAGS (o->type == AV_OPT_TYPE_FLAGS) ? AV_DICT_APPEND : 0
510 int opt_default(void *optctx, const char *opt, const char *arg)
514 char opt_stripped[128];
516 const AVClass *cc = avcodec_get_class(), *fc = avformat_get_class();
517 #if CONFIG_AVRESAMPLE
518 const AVClass *rc = avresample_get_class();
520 const AVClass *sc, *swr_class;
522 if (!strcmp(opt, "debug") || !strcmp(opt, "fdebug"))
523 av_log_set_level(AV_LOG_DEBUG);
525 if (!(p = strchr(opt, ':')))
526 p = opt + strlen(opt);
527 av_strlcpy(opt_stripped, opt, FFMIN(sizeof(opt_stripped), p - opt + 1));
529 if ((o = opt_find(&cc, opt_stripped, NULL, 0,
530 AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ)) ||
531 ((opt[0] == 'v' || opt[0] == 'a' || opt[0] == 's') &&
532 (o = opt_find(&cc, opt + 1, NULL, 0, AV_OPT_SEARCH_FAKE_OBJ)))) {
533 av_dict_set(&codec_opts, opt, arg, FLAGS);
536 if ((o = opt_find(&fc, opt, NULL, 0,
537 AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ))) {
538 av_dict_set(&format_opts, opt, arg, FLAGS);
540 av_log(NULL, AV_LOG_VERBOSE, "Routing option %s to both codec and muxer layer\n", opt);
544 sc = sws_get_class();
545 if (!consumed && opt_find(&sc, opt, NULL, 0,
546 AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ)) {
547 // XXX we only support sws_flags, not arbitrary sws options
548 int ret = av_opt_set(sws_opts, opt, arg, 0);
550 av_log(NULL, AV_LOG_ERROR, "Error setting option %s.\n", opt);
556 #if CONFIG_SWRESAMPLE
557 swr_class = swr_get_class();
558 if (!consumed && (o=opt_find(&swr_class, opt, NULL, 0,
559 AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ))) {
560 struct SwrContext *swr = swr_alloc();
561 int ret = av_opt_set(swr, opt, arg, 0);
564 av_log(NULL, AV_LOG_ERROR, "Error setting option %s.\n", opt);
567 av_dict_set(&swr_opts, opt, arg, FLAGS);
571 #if CONFIG_AVRESAMPLE
572 if ((o=opt_find(&rc, opt, NULL, 0,
573 AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ))) {
574 av_dict_set(&resample_opts, opt, arg, FLAGS);
581 return AVERROR_OPTION_NOT_FOUND;
585 * Check whether given option is a group separator.
587 * @return index of the group definition that matched or -1 if none
589 static int match_group_separator(const OptionGroupDef *groups, int nb_groups,
594 for (i = 0; i < nb_groups; i++) {
595 const OptionGroupDef *p = &groups[i];
596 if (p->sep && !strcmp(p->sep, opt))
604 * Finish parsing an option group.
606 * @param group_idx which group definition should this group belong to
607 * @param arg argument of the group delimiting option
609 static void finish_group(OptionParseContext *octx, int group_idx,
612 OptionGroupList *l = &octx->groups[group_idx];
615 GROW_ARRAY(l->groups, l->nb_groups);
616 g = &l->groups[l->nb_groups - 1];
618 *g = octx->cur_group;
620 g->group_def = l->group_def;
622 g->sws_opts = sws_opts;
624 g->swr_opts = swr_opts;
625 g->codec_opts = codec_opts;
626 g->format_opts = format_opts;
627 g->resample_opts = resample_opts;
631 resample_opts = NULL;
638 memset(&octx->cur_group, 0, sizeof(octx->cur_group));
642 * Add an option instance to currently parsed group.
644 static void add_opt(OptionParseContext *octx, const OptionDef *opt,
645 const char *key, const char *val)
647 int global = !(opt->flags & (OPT_PERFILE | OPT_SPEC | OPT_OFFSET));
648 OptionGroup *g = global ? &octx->global_opts : &octx->cur_group;
650 GROW_ARRAY(g->opts, g->nb_opts);
651 g->opts[g->nb_opts - 1].opt = opt;
652 g->opts[g->nb_opts - 1].key = key;
653 g->opts[g->nb_opts - 1].val = val;
656 static void init_parse_context(OptionParseContext *octx,
657 const OptionGroupDef *groups, int nb_groups)
659 static const OptionGroupDef global_group = { "global" };
662 memset(octx, 0, sizeof(*octx));
664 octx->nb_groups = nb_groups;
665 octx->groups = av_mallocz_array(octx->nb_groups, sizeof(*octx->groups));
669 for (i = 0; i < octx->nb_groups; i++)
670 octx->groups[i].group_def = &groups[i];
672 octx->global_opts.group_def = &global_group;
673 octx->global_opts.arg = "";
678 void uninit_parse_context(OptionParseContext *octx)
682 for (i = 0; i < octx->nb_groups; i++) {
683 OptionGroupList *l = &octx->groups[i];
685 for (j = 0; j < l->nb_groups; j++) {
686 av_freep(&l->groups[j].opts);
687 av_dict_free(&l->groups[j].codec_opts);
688 av_dict_free(&l->groups[j].format_opts);
689 av_dict_free(&l->groups[j].resample_opts);
691 sws_freeContext(l->groups[j].sws_opts);
693 av_dict_free(&l->groups[j].swr_opts);
695 av_freep(&l->groups);
697 av_freep(&octx->groups);
699 av_freep(&octx->cur_group.opts);
700 av_freep(&octx->global_opts.opts);
705 int split_commandline(OptionParseContext *octx, int argc, char *argv[],
706 const OptionDef *options,
707 const OptionGroupDef *groups, int nb_groups)
712 /* perform system-dependent conversions for arguments list */
713 prepare_app_arguments(&argc, &argv);
715 init_parse_context(octx, groups, nb_groups);
716 av_log(NULL, AV_LOG_DEBUG, "Splitting the commandline.\n");
718 while (optindex < argc) {
719 const char *opt = argv[optindex++], *arg;
723 av_log(NULL, AV_LOG_DEBUG, "Reading option '%s' ...", opt);
725 if (opt[0] == '-' && opt[1] == '-' && !opt[2]) {
729 /* unnamed group separators, e.g. output filename */
730 if (opt[0] != '-' || !opt[1] || dashdash+1 == optindex) {
731 finish_group(octx, 0, opt);
732 av_log(NULL, AV_LOG_DEBUG, " matched as %s.\n", groups[0].name);
737 #define GET_ARG(arg) \
739 arg = argv[optindex++]; \
741 av_log(NULL, AV_LOG_ERROR, "Missing argument for option '%s'.\n", opt);\
742 return AVERROR(EINVAL); \
746 /* named group separators, e.g. -i */
747 if ((ret = match_group_separator(groups, nb_groups, opt)) >= 0) {
749 finish_group(octx, ret, arg);
750 av_log(NULL, AV_LOG_DEBUG, " matched as %s with argument '%s'.\n",
751 groups[ret].name, arg);
756 po = find_option(options, opt);
758 if (po->flags & OPT_EXIT) {
759 /* optional argument, e.g. -h */
760 arg = argv[optindex++];
761 } else if (po->flags & HAS_ARG) {
767 add_opt(octx, po, opt, arg);
768 av_log(NULL, AV_LOG_DEBUG, " matched as option '%s' (%s) with "
769 "argument '%s'.\n", po->name, po->help, arg);
774 if (argv[optindex]) {
775 ret = opt_default(NULL, opt, argv[optindex]);
777 av_log(NULL, AV_LOG_DEBUG, " matched as AVOption '%s' with "
778 "argument '%s'.\n", opt, argv[optindex]);
781 } else if (ret != AVERROR_OPTION_NOT_FOUND) {
782 av_log(NULL, AV_LOG_ERROR, "Error parsing option '%s' "
783 "with argument '%s'.\n", opt, argv[optindex]);
788 /* boolean -nofoo options */
789 if (opt[0] == 'n' && opt[1] == 'o' &&
790 (po = find_option(options, opt + 2)) &&
791 po->name && po->flags & OPT_BOOL) {
792 add_opt(octx, po, opt, "0");
793 av_log(NULL, AV_LOG_DEBUG, " matched as option '%s' (%s) with "
794 "argument 0.\n", po->name, po->help);
798 av_log(NULL, AV_LOG_ERROR, "Unrecognized option '%s'.\n", opt);
799 return AVERROR_OPTION_NOT_FOUND;
802 if (octx->cur_group.nb_opts || codec_opts || format_opts || resample_opts)
803 av_log(NULL, AV_LOG_WARNING, "Trailing options were found on the "
806 av_log(NULL, AV_LOG_DEBUG, "Finished splitting the commandline.\n");
811 int opt_cpuflags(void *optctx, const char *opt, const char *arg)
814 unsigned flags = av_get_cpu_flags();
816 if ((ret = av_parse_cpu_caps(&flags, arg)) < 0)
819 av_force_cpu_flags(flags);
823 int opt_loglevel(void *optctx, const char *opt, const char *arg)
825 const struct { const char *name; int level; } log_levels[] = {
826 { "quiet" , AV_LOG_QUIET },
827 { "panic" , AV_LOG_PANIC },
828 { "fatal" , AV_LOG_FATAL },
829 { "error" , AV_LOG_ERROR },
830 { "warning", AV_LOG_WARNING },
831 { "info" , AV_LOG_INFO },
832 { "verbose", AV_LOG_VERBOSE },
833 { "debug" , AV_LOG_DEBUG },
840 flags = av_log_get_flags();
841 tail = strstr(arg, "repeat");
843 flags &= ~AV_LOG_SKIP_REPEATED;
845 flags |= AV_LOG_SKIP_REPEATED;
847 av_log_set_flags(flags);
849 arg += 6 + (arg[6]=='+');
853 for (i = 0; i < FF_ARRAY_ELEMS(log_levels); i++) {
854 if (!strcmp(log_levels[i].name, arg)) {
855 av_log_set_level(log_levels[i].level);
860 level = strtol(arg, &tail, 10);
862 av_log(NULL, AV_LOG_FATAL, "Invalid loglevel \"%s\". "
863 "Possible levels are numbers or:\n", arg);
864 for (i = 0; i < FF_ARRAY_ELEMS(log_levels); i++)
865 av_log(NULL, AV_LOG_FATAL, "\"%s\"\n", log_levels[i].name);
868 av_log_set_level(level);
872 static void expand_filename_template(AVBPrint *bp, const char *template,
877 while ((c = *(template++))) {
879 if (!(c = *(template++)))
883 av_bprintf(bp, "%s", program_name);
886 av_bprintf(bp, "%04d%02d%02d-%02d%02d%02d",
887 tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
888 tm->tm_hour, tm->tm_min, tm->tm_sec);
891 av_bprint_chars(bp, c, 1);
895 av_bprint_chars(bp, c, 1);
900 static int init_report(const char *env)
902 char *filename_template = NULL;
909 if (report_file) /* already opened */
912 tm = localtime(&now);
914 while (env && *env) {
915 if ((ret = av_opt_get_key_value(&env, "=", ":", 0, &key, &val)) < 0) {
917 av_log(NULL, AV_LOG_ERROR,
918 "Failed to parse FFREPORT environment variable: %s\n",
925 if (!strcmp(key, "file")) {
926 av_free(filename_template);
927 filename_template = val;
930 av_log(NULL, AV_LOG_ERROR, "Unknown key '%s' in FFREPORT\n", key);
936 av_bprint_init(&filename, 0, 1);
937 expand_filename_template(&filename,
938 av_x_if_null(filename_template, "%p-%t.log"), tm);
939 av_free(filename_template);
940 if (!av_bprint_is_complete(&filename)) {
941 av_log(NULL, AV_LOG_ERROR, "Out of memory building report file name\n");
942 return AVERROR(ENOMEM);
945 report_file = fopen(filename.str, "w");
947 av_log(NULL, AV_LOG_ERROR, "Failed to open report \"%s\": %s\n",
948 filename.str, strerror(errno));
949 return AVERROR(errno);
951 av_log_set_callback(log_callback_report);
952 av_log(NULL, AV_LOG_INFO,
953 "%s started on %04d-%02d-%02d at %02d:%02d:%02d\n"
954 "Report written to \"%s\"\n",
956 tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
957 tm->tm_hour, tm->tm_min, tm->tm_sec,
959 av_bprint_finalize(&filename, NULL);
963 int opt_report(const char *opt)
965 return init_report(NULL);
968 int opt_max_alloc(void *optctx, const char *opt, const char *arg)
973 max = strtol(arg, &tail, 10);
975 av_log(NULL, AV_LOG_FATAL, "Invalid max_alloc \"%s\".\n", arg);
982 int opt_timelimit(void *optctx, const char *opt, const char *arg)
985 int lim = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
986 struct rlimit rl = { lim, lim + 1 };
987 if (setrlimit(RLIMIT_CPU, &rl))
990 av_log(NULL, AV_LOG_WARNING, "-%s not implemented on this OS\n", opt);
995 void print_error(const char *filename, int err)
998 const char *errbuf_ptr = errbuf;
1000 if (av_strerror(err, errbuf, sizeof(errbuf)) < 0)
1001 errbuf_ptr = strerror(AVUNERROR(err));
1002 av_log(NULL, AV_LOG_ERROR, "%s: %s\n", filename, errbuf_ptr);
1005 static int warned_cfg = 0;
1008 #define SHOW_VERSION 2
1009 #define SHOW_CONFIG 4
1010 #define SHOW_COPYRIGHT 8
1012 #define PRINT_LIB_INFO(libname, LIBNAME, flags, level) \
1013 if (CONFIG_##LIBNAME) { \
1014 const char *indent = flags & INDENT? " " : ""; \
1015 if (flags & SHOW_VERSION) { \
1016 unsigned int version = libname##_version(); \
1017 av_log(NULL, level, \
1018 "%slib%-11s %2d.%3d.%3d / %2d.%3d.%3d\n", \
1020 LIB##LIBNAME##_VERSION_MAJOR, \
1021 LIB##LIBNAME##_VERSION_MINOR, \
1022 LIB##LIBNAME##_VERSION_MICRO, \
1023 version >> 16, version >> 8 & 0xff, version & 0xff); \
1025 if (flags & SHOW_CONFIG) { \
1026 const char *cfg = libname##_configuration(); \
1027 if (strcmp(FFMPEG_CONFIGURATION, cfg)) { \
1028 if (!warned_cfg) { \
1029 av_log(NULL, level, \
1030 "%sWARNING: library configuration mismatch\n", \
1034 av_log(NULL, level, "%s%-11s configuration: %s\n", \
1035 indent, #libname, cfg); \
1040 static void print_all_libs_info(int flags, int level)
1042 PRINT_LIB_INFO(avutil, AVUTIL, flags, level);
1043 PRINT_LIB_INFO(avcodec, AVCODEC, flags, level);
1044 PRINT_LIB_INFO(avformat, AVFORMAT, flags, level);
1045 PRINT_LIB_INFO(avdevice, AVDEVICE, flags, level);
1046 PRINT_LIB_INFO(avfilter, AVFILTER, flags, level);
1047 PRINT_LIB_INFO(avresample, AVRESAMPLE, flags, level);
1048 PRINT_LIB_INFO(swscale, SWSCALE, flags, level);
1049 PRINT_LIB_INFO(swresample,SWRESAMPLE, flags, level);
1050 PRINT_LIB_INFO(postproc, POSTPROC, flags, level);
1053 static void print_program_info(int flags, int level)
1055 const char *indent = flags & INDENT? " " : "";
1057 av_log(NULL, level, "%s version " FFMPEG_VERSION, program_name);
1058 if (flags & SHOW_COPYRIGHT)
1059 av_log(NULL, level, " Copyright (c) %d-%d the FFmpeg developers",
1060 program_birth_year, CONFIG_THIS_YEAR);
1061 av_log(NULL, level, "\n");
1062 av_log(NULL, level, "%sbuilt on %s %s with %s\n",
1063 indent, __DATE__, __TIME__, CC_IDENT);
1065 av_log(NULL, level, "%sconfiguration: " FFMPEG_CONFIGURATION "\n", indent);
1068 static void print_buildconf(int flags, int level)
1070 const char *indent = flags & INDENT ? " " : "";
1071 char str[] = { FFMPEG_CONFIGURATION };
1072 char *conflist, *remove_tilde, *splitconf;
1074 // Change all the ' --' strings to '~--' so that
1075 // they can be identified as tokens.
1076 while ((conflist = strstr(str, " --")) != NULL) {
1077 strncpy(conflist, "~--", 3);
1080 // Compensate for the weirdness this would cause
1081 // when passing 'pkg-config --static'.
1082 while ((remove_tilde = strstr(str, "pkg-config~")) != NULL) {
1083 strncpy(remove_tilde, "pkg-config ", 11);
1086 splitconf = strtok(str, "~");
1087 av_log(NULL, level, "\n%sconfiguration:\n", indent);
1088 while (splitconf != NULL) {
1089 av_log(NULL, level, "%s%s%s\n", indent, indent, splitconf);
1090 splitconf = strtok(NULL, "~");
1094 void show_banner(int argc, char **argv, const OptionDef *options)
1096 int idx = locate_option(argc, argv, options, "version");
1097 if (hide_banner || idx)
1100 print_program_info (INDENT|SHOW_COPYRIGHT, AV_LOG_INFO);
1101 print_all_libs_info(INDENT|SHOW_CONFIG, AV_LOG_INFO);
1102 print_all_libs_info(INDENT|SHOW_VERSION, AV_LOG_INFO);
1105 int show_version(void *optctx, const char *opt, const char *arg)
1107 av_log_set_callback(log_callback_help);
1108 print_program_info (0 , AV_LOG_INFO);
1109 print_all_libs_info(SHOW_VERSION, AV_LOG_INFO);
1114 int show_buildconf(void *optctx, const char *opt, const char *arg)
1116 av_log_set_callback(log_callback_help);
1117 print_buildconf (INDENT|0, AV_LOG_INFO);
1122 int show_license(void *optctx, const char *opt, const char *arg)
1126 "This version of %s has nonfree parts compiled in.\n"
1127 "Therefore it is not legally redistributable.\n",
1131 "%s is free software; you can redistribute it and/or modify\n"
1132 "it under the terms of the GNU General Public License as published by\n"
1133 "the Free Software Foundation; either version 3 of the License, or\n"
1134 "(at your option) any later version.\n"
1136 "%s is distributed in the hope that it will be useful,\n"
1137 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
1138 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
1139 "GNU General Public License for more details.\n"
1141 "You should have received a copy of the GNU General Public License\n"
1142 "along with %s. If not, see <http://www.gnu.org/licenses/>.\n",
1143 program_name, program_name, program_name );
1146 "%s is free software; you can redistribute it and/or modify\n"
1147 "it under the terms of the GNU General Public License as published by\n"
1148 "the Free Software Foundation; either version 2 of the License, or\n"
1149 "(at your option) any later version.\n"
1151 "%s is distributed in the hope that it will be useful,\n"
1152 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
1153 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
1154 "GNU General Public License for more details.\n"
1156 "You should have received a copy of the GNU General Public License\n"
1157 "along with %s; if not, write to the Free Software\n"
1158 "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n",
1159 program_name, program_name, program_name );
1162 "%s is free software; you can redistribute it and/or modify\n"
1163 "it under the terms of the GNU Lesser General Public License as published by\n"
1164 "the Free Software Foundation; either version 3 of the License, or\n"
1165 "(at your option) any later version.\n"
1167 "%s is distributed in the hope that it will be useful,\n"
1168 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
1169 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
1170 "GNU Lesser General Public License for more details.\n"
1172 "You should have received a copy of the GNU Lesser General Public License\n"
1173 "along with %s. If not, see <http://www.gnu.org/licenses/>.\n",
1174 program_name, program_name, program_name );
1177 "%s is free software; you can redistribute it and/or\n"
1178 "modify it under the terms of the GNU Lesser General Public\n"
1179 "License as published by the Free Software Foundation; either\n"
1180 "version 2.1 of the License, or (at your option) any later version.\n"
1182 "%s is distributed in the hope that it will be useful,\n"
1183 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
1184 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU\n"
1185 "Lesser General Public License for more details.\n"
1187 "You should have received a copy of the GNU Lesser General Public\n"
1188 "License along with %s; if not, write to the Free Software\n"
1189 "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n",
1190 program_name, program_name, program_name );
1196 int show_formats(void *optctx, const char *opt, const char *arg)
1198 AVInputFormat *ifmt = NULL;
1199 AVOutputFormat *ofmt = NULL;
1200 const char *last_name;
1202 printf("File formats:\n"
1203 " D. = Demuxing supported\n"
1204 " .E = Muxing supported\n"
1210 const char *name = NULL;
1211 const char *long_name = NULL;
1213 while ((ofmt = av_oformat_next(ofmt))) {
1214 if ((name == NULL || strcmp(ofmt->name, name) < 0) &&
1215 strcmp(ofmt->name, last_name) > 0) {
1217 long_name = ofmt->long_name;
1221 while ((ifmt = av_iformat_next(ifmt))) {
1222 if ((name == NULL || strcmp(ifmt->name, name) < 0) &&
1223 strcmp(ifmt->name, last_name) > 0) {
1225 long_name = ifmt->long_name;
1228 if (name && strcmp(ifmt->name, name) == 0)
1235 printf(" %s%s %-15s %s\n",
1239 long_name ? long_name:" ");
1244 #define PRINT_CODEC_SUPPORTED(codec, field, type, list_name, term, get_name) \
1245 if (codec->field) { \
1246 const type *p = codec->field; \
1248 printf(" Supported " list_name ":"); \
1249 while (*p != term) { \
1251 printf(" %s", name); \
1257 static void print_codec(const AVCodec *c)
1259 int encoder = av_codec_is_encoder(c);
1261 printf("%s %s [%s]:\n", encoder ? "Encoder" : "Decoder", c->name,
1262 c->long_name ? c->long_name : "");
1264 if (c->type == AVMEDIA_TYPE_VIDEO ||
1265 c->type == AVMEDIA_TYPE_AUDIO) {
1266 printf(" Threading capabilities: ");
1267 switch (c->capabilities & (CODEC_CAP_FRAME_THREADS |
1268 CODEC_CAP_SLICE_THREADS)) {
1269 case CODEC_CAP_FRAME_THREADS |
1270 CODEC_CAP_SLICE_THREADS: printf("frame and slice"); break;
1271 case CODEC_CAP_FRAME_THREADS: printf("frame"); break;
1272 case CODEC_CAP_SLICE_THREADS: printf("slice"); break;
1273 default: printf("no"); break;
1278 if (c->supported_framerates) {
1279 const AVRational *fps = c->supported_framerates;
1281 printf(" Supported framerates:");
1283 printf(" %d/%d", fps->num, fps->den);
1288 PRINT_CODEC_SUPPORTED(c, pix_fmts, enum AVPixelFormat, "pixel formats",
1289 AV_PIX_FMT_NONE, GET_PIX_FMT_NAME);
1290 PRINT_CODEC_SUPPORTED(c, supported_samplerates, int, "sample rates", 0,
1291 GET_SAMPLE_RATE_NAME);
1292 PRINT_CODEC_SUPPORTED(c, sample_fmts, enum AVSampleFormat, "sample formats",
1293 AV_SAMPLE_FMT_NONE, GET_SAMPLE_FMT_NAME);
1294 PRINT_CODEC_SUPPORTED(c, channel_layouts, uint64_t, "channel layouts",
1295 0, GET_CH_LAYOUT_DESC);
1297 if (c->priv_class) {
1298 show_help_children(c->priv_class,
1299 AV_OPT_FLAG_ENCODING_PARAM |
1300 AV_OPT_FLAG_DECODING_PARAM);
1304 static char get_media_type_char(enum AVMediaType type)
1307 case AVMEDIA_TYPE_VIDEO: return 'V';
1308 case AVMEDIA_TYPE_AUDIO: return 'A';
1309 case AVMEDIA_TYPE_DATA: return 'D';
1310 case AVMEDIA_TYPE_SUBTITLE: return 'S';
1311 case AVMEDIA_TYPE_ATTACHMENT:return 'T';
1312 default: return '?';
1316 static const AVCodec *next_codec_for_id(enum AVCodecID id, const AVCodec *prev,
1319 while ((prev = av_codec_next(prev))) {
1320 if (prev->id == id &&
1321 (encoder ? av_codec_is_encoder(prev) : av_codec_is_decoder(prev)))
1327 static int compare_codec_desc(const void *a, const void *b)
1329 const AVCodecDescriptor * const *da = a;
1330 const AVCodecDescriptor * const *db = b;
1332 return (*da)->type != (*db)->type ? (*da)->type - (*db)->type :
1333 strcmp((*da)->name, (*db)->name);
1336 static unsigned get_codecs_sorted(const AVCodecDescriptor ***rcodecs)
1338 const AVCodecDescriptor *desc = NULL;
1339 const AVCodecDescriptor **codecs;
1340 unsigned nb_codecs = 0, i = 0;
1342 while ((desc = avcodec_descriptor_next(desc)))
1344 if (!(codecs = av_calloc(nb_codecs, sizeof(*codecs)))) {
1345 av_log(NULL, AV_LOG_ERROR, "Out of memory\n");
1349 while ((desc = avcodec_descriptor_next(desc)))
1351 av_assert0(i == nb_codecs);
1352 qsort(codecs, nb_codecs, sizeof(*codecs), compare_codec_desc);
1357 static void print_codecs_for_id(enum AVCodecID id, int encoder)
1359 const AVCodec *codec = NULL;
1361 printf(" (%s: ", encoder ? "encoders" : "decoders");
1363 while ((codec = next_codec_for_id(id, codec, encoder)))
1364 printf("%s ", codec->name);
1369 int show_codecs(void *optctx, const char *opt, const char *arg)
1371 const AVCodecDescriptor **codecs;
1372 unsigned i, nb_codecs = get_codecs_sorted(&codecs);
1375 " D..... = Decoding supported\n"
1376 " .E.... = Encoding supported\n"
1377 " ..V... = Video codec\n"
1378 " ..A... = Audio codec\n"
1379 " ..S... = Subtitle codec\n"
1380 " ...I.. = Intra frame-only codec\n"
1381 " ....L. = Lossy compression\n"
1382 " .....S = Lossless compression\n"
1384 for (i = 0; i < nb_codecs; i++) {
1385 const AVCodecDescriptor *desc = codecs[i];
1386 const AVCodec *codec = NULL;
1389 printf(avcodec_find_decoder(desc->id) ? "D" : ".");
1390 printf(avcodec_find_encoder(desc->id) ? "E" : ".");
1392 printf("%c", get_media_type_char(desc->type));
1393 printf((desc->props & AV_CODEC_PROP_INTRA_ONLY) ? "I" : ".");
1394 printf((desc->props & AV_CODEC_PROP_LOSSY) ? "L" : ".");
1395 printf((desc->props & AV_CODEC_PROP_LOSSLESS) ? "S" : ".");
1397 printf(" %-20s %s", desc->name, desc->long_name ? desc->long_name : "");
1399 /* print decoders/encoders when there's more than one or their
1400 * names are different from codec name */
1401 while ((codec = next_codec_for_id(desc->id, codec, 0))) {
1402 if (strcmp(codec->name, desc->name)) {
1403 print_codecs_for_id(desc->id, 0);
1408 while ((codec = next_codec_for_id(desc->id, codec, 1))) {
1409 if (strcmp(codec->name, desc->name)) {
1410 print_codecs_for_id(desc->id, 1);
1421 static void print_codecs(int encoder)
1423 const AVCodecDescriptor **codecs;
1424 unsigned i, nb_codecs = get_codecs_sorted(&codecs);
1429 " S..... = Subtitle\n"
1430 " .F.... = Frame-level multithreading\n"
1431 " ..S... = Slice-level multithreading\n"
1432 " ...X.. = Codec is experimental\n"
1433 " ....B. = Supports draw_horiz_band\n"
1434 " .....D = Supports direct rendering method 1\n"
1436 encoder ? "Encoders" : "Decoders");
1437 for (i = 0; i < nb_codecs; i++) {
1438 const AVCodecDescriptor *desc = codecs[i];
1439 const AVCodec *codec = NULL;
1441 while ((codec = next_codec_for_id(desc->id, codec, encoder))) {
1442 printf(" %c", get_media_type_char(desc->type));
1443 printf((codec->capabilities & CODEC_CAP_FRAME_THREADS) ? "F" : ".");
1444 printf((codec->capabilities & CODEC_CAP_SLICE_THREADS) ? "S" : ".");
1445 printf((codec->capabilities & CODEC_CAP_EXPERIMENTAL) ? "X" : ".");
1446 printf((codec->capabilities & CODEC_CAP_DRAW_HORIZ_BAND)?"B" : ".");
1447 printf((codec->capabilities & CODEC_CAP_DR1) ? "D" : ".");
1449 printf(" %-20s %s", codec->name, codec->long_name ? codec->long_name : "");
1450 if (strcmp(codec->name, desc->name))
1451 printf(" (codec %s)", desc->name);
1459 int show_decoders(void *optctx, const char *opt, const char *arg)
1465 int show_encoders(void *optctx, const char *opt, const char *arg)
1471 int show_bsfs(void *optctx, const char *opt, const char *arg)
1473 AVBitStreamFilter *bsf = NULL;
1475 printf("Bitstream filters:\n");
1476 while ((bsf = av_bitstream_filter_next(bsf)))
1477 printf("%s\n", bsf->name);
1482 int show_protocols(void *optctx, const char *opt, const char *arg)
1484 void *opaque = NULL;
1487 printf("Supported file protocols:\n"
1489 while ((name = avio_enum_protocols(&opaque, 0)))
1490 printf("%s\n", name);
1491 printf("Output:\n");
1492 while ((name = avio_enum_protocols(&opaque, 1)))
1493 printf("%s\n", name);
1497 int show_filters(void *optctx, const char *opt, const char *arg)
1499 const AVFilter av_unused(*filter) = NULL;
1500 char descr[64], *descr_cur;
1502 const AVFilterPad *pad;
1505 " T.. = Timeline support\n"
1506 " .S. = Slice threading\n"
1507 " ..C = Commmand support\n"
1508 " A = Audio input/output\n"
1509 " V = Video input/output\n"
1510 " N = Dynamic number and/or type of input/output\n"
1511 " | = Source or sink filter\n");
1513 while ((filter = avfilter_next(filter))) {
1515 for (i = 0; i < 2; i++) {
1517 *(descr_cur++) = '-';
1518 *(descr_cur++) = '>';
1520 pad = i ? filter->outputs : filter->inputs;
1521 for (j = 0; pad && pad[j].name; j++) {
1522 if (descr_cur >= descr + sizeof(descr) - 4)
1524 *(descr_cur++) = get_media_type_char(pad[j].type);
1527 *(descr_cur++) = ((!i && (filter->flags & AVFILTER_FLAG_DYNAMIC_INPUTS)) ||
1528 ( i && (filter->flags & AVFILTER_FLAG_DYNAMIC_OUTPUTS))) ? 'N' : '|';
1531 printf(" %c%c%c %-16s %-10s %s\n",
1532 filter->flags & AVFILTER_FLAG_SUPPORT_TIMELINE ? 'T' : '.',
1533 filter->flags & AVFILTER_FLAG_SLICE_THREADS ? 'S' : '.',
1534 filter->process_command ? 'C' : '.',
1535 filter->name, descr, filter->description);
1541 int show_colors(void *optctx, const char *opt, const char *arg)
1547 printf("%-32s #RRGGBB\n", "name");
1549 for (i = 0; name = av_get_known_color_name(i, &rgb); i++)
1550 printf("%-32s #%02x%02x%02x\n", name, rgb[0], rgb[1], rgb[2]);
1555 int show_pix_fmts(void *optctx, const char *opt, const char *arg)
1557 const AVPixFmtDescriptor *pix_desc = NULL;
1559 printf("Pixel formats:\n"
1560 "I.... = Supported Input format for conversion\n"
1561 ".O... = Supported Output format for conversion\n"
1562 "..H.. = Hardware accelerated format\n"
1563 "...P. = Paletted format\n"
1564 "....B = Bitstream format\n"
1565 "FLAGS NAME NB_COMPONENTS BITS_PER_PIXEL\n"
1569 # define sws_isSupportedInput(x) 0
1570 # define sws_isSupportedOutput(x) 0
1573 while ((pix_desc = av_pix_fmt_desc_next(pix_desc))) {
1574 enum AVPixelFormat pix_fmt = av_pix_fmt_desc_get_id(pix_desc);
1575 printf("%c%c%c%c%c %-16s %d %2d\n",
1576 sws_isSupportedInput (pix_fmt) ? 'I' : '.',
1577 sws_isSupportedOutput(pix_fmt) ? 'O' : '.',
1578 pix_desc->flags & AV_PIX_FMT_FLAG_HWACCEL ? 'H' : '.',
1579 pix_desc->flags & AV_PIX_FMT_FLAG_PAL ? 'P' : '.',
1580 pix_desc->flags & AV_PIX_FMT_FLAG_BITSTREAM ? 'B' : '.',
1582 pix_desc->nb_components,
1583 av_get_bits_per_pixel(pix_desc));
1588 int show_layouts(void *optctx, const char *opt, const char *arg)
1592 const char *name, *descr;
1594 printf("Individual channels:\n"
1595 "NAME DESCRIPTION\n");
1596 for (i = 0; i < 63; i++) {
1597 name = av_get_channel_name((uint64_t)1 << i);
1600 descr = av_get_channel_description((uint64_t)1 << i);
1601 printf("%-12s%s\n", name, descr);
1603 printf("\nStandard channel layouts:\n"
1604 "NAME DECOMPOSITION\n");
1605 for (i = 0; !av_get_standard_channel_layout(i, &layout, &name); i++) {
1607 printf("%-12s", name);
1608 for (j = 1; j; j <<= 1)
1610 printf("%s%s", (layout & (j - 1)) ? "+" : "", av_get_channel_name(j));
1617 int show_sample_fmts(void *optctx, const char *opt, const char *arg)
1621 for (i = -1; i < AV_SAMPLE_FMT_NB; i++)
1622 printf("%s\n", av_get_sample_fmt_string(fmt_str, sizeof(fmt_str), i));
1626 static void show_help_codec(const char *name, int encoder)
1628 const AVCodecDescriptor *desc;
1629 const AVCodec *codec;
1632 av_log(NULL, AV_LOG_ERROR, "No codec name specified.\n");
1636 codec = encoder ? avcodec_find_encoder_by_name(name) :
1637 avcodec_find_decoder_by_name(name);
1641 else if ((desc = avcodec_descriptor_get_by_name(name))) {
1644 while ((codec = next_codec_for_id(desc->id, codec, encoder))) {
1650 av_log(NULL, AV_LOG_ERROR, "Codec '%s' is known to FFmpeg, "
1651 "but no %s for it are available. FFmpeg might need to be "
1652 "recompiled with additional external libraries.\n",
1653 name, encoder ? "encoders" : "decoders");
1656 av_log(NULL, AV_LOG_ERROR, "Codec '%s' is not recognized by FFmpeg.\n",
1661 static void show_help_demuxer(const char *name)
1663 const AVInputFormat *fmt = av_find_input_format(name);
1666 av_log(NULL, AV_LOG_ERROR, "Unknown format '%s'.\n", name);
1670 printf("Demuxer %s [%s]:\n", fmt->name, fmt->long_name);
1672 if (fmt->extensions)
1673 printf(" Common extensions: %s.\n", fmt->extensions);
1675 if (fmt->priv_class)
1676 show_help_children(fmt->priv_class, AV_OPT_FLAG_DECODING_PARAM);
1679 static void show_help_muxer(const char *name)
1681 const AVCodecDescriptor *desc;
1682 const AVOutputFormat *fmt = av_guess_format(name, NULL, NULL);
1685 av_log(NULL, AV_LOG_ERROR, "Unknown format '%s'.\n", name);
1689 printf("Muxer %s [%s]:\n", fmt->name, fmt->long_name);
1691 if (fmt->extensions)
1692 printf(" Common extensions: %s.\n", fmt->extensions);
1694 printf(" Mime type: %s.\n", fmt->mime_type);
1695 if (fmt->video_codec != AV_CODEC_ID_NONE &&
1696 (desc = avcodec_descriptor_get(fmt->video_codec))) {
1697 printf(" Default video codec: %s.\n", desc->name);
1699 if (fmt->audio_codec != AV_CODEC_ID_NONE &&
1700 (desc = avcodec_descriptor_get(fmt->audio_codec))) {
1701 printf(" Default audio codec: %s.\n", desc->name);
1703 if (fmt->subtitle_codec != AV_CODEC_ID_NONE &&
1704 (desc = avcodec_descriptor_get(fmt->subtitle_codec))) {
1705 printf(" Default subtitle codec: %s.\n", desc->name);
1708 if (fmt->priv_class)
1709 show_help_children(fmt->priv_class, AV_OPT_FLAG_ENCODING_PARAM);
1713 static void show_help_filter(const char *name)
1716 const AVFilter *f = avfilter_get_by_name(name);
1720 av_log(NULL, AV_LOG_ERROR, "No filter name specified.\n");
1723 av_log(NULL, AV_LOG_ERROR, "Unknown filter '%s'.\n", name);
1727 printf("Filter %s\n", f->name);
1729 printf(" %s\n", f->description);
1731 if (f->flags & AVFILTER_FLAG_SLICE_THREADS)
1732 printf(" slice threading supported\n");
1734 printf(" Inputs:\n");
1735 count = avfilter_pad_count(f->inputs);
1736 for (i = 0; i < count; i++) {
1737 printf(" #%d: %s (%s)\n", i, avfilter_pad_get_name(f->inputs, i),
1738 media_type_string(avfilter_pad_get_type(f->inputs, i)));
1740 if (f->flags & AVFILTER_FLAG_DYNAMIC_INPUTS)
1741 printf(" dynamic (depending on the options)\n");
1743 printf(" none (source filter)\n");
1745 printf(" Outputs:\n");
1746 count = avfilter_pad_count(f->outputs);
1747 for (i = 0; i < count; i++) {
1748 printf(" #%d: %s (%s)\n", i, avfilter_pad_get_name(f->outputs, i),
1749 media_type_string(avfilter_pad_get_type(f->outputs, i)));
1751 if (f->flags & AVFILTER_FLAG_DYNAMIC_OUTPUTS)
1752 printf(" dynamic (depending on the options)\n");
1754 printf(" none (sink filter)\n");
1757 show_help_children(f->priv_class, AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM |
1758 AV_OPT_FLAG_AUDIO_PARAM);
1759 if (f->flags & AVFILTER_FLAG_SUPPORT_TIMELINE)
1760 printf("This filter has support for timeline through the 'enable' option.\n");
1762 av_log(NULL, AV_LOG_ERROR, "Build without libavfilter; "
1763 "can not to satisfy request\n");
1768 int show_help(void *optctx, const char *opt, const char *arg)
1771 av_log_set_callback(log_callback_help);
1773 topic = av_strdup(arg ? arg : "");
1774 par = strchr(topic, '=');
1779 show_help_default(topic, par);
1780 } else if (!strcmp(topic, "decoder")) {
1781 show_help_codec(par, 0);
1782 } else if (!strcmp(topic, "encoder")) {
1783 show_help_codec(par, 1);
1784 } else if (!strcmp(topic, "demuxer")) {
1785 show_help_demuxer(par);
1786 } else if (!strcmp(topic, "muxer")) {
1787 show_help_muxer(par);
1789 } else if (!strcmp(topic, "filter")) {
1790 show_help_filter(par);
1793 show_help_default(topic, par);
1800 int read_yesno(void)
1803 int yesno = (av_toupper(c) == 'Y');
1805 while (c != '\n' && c != EOF)
1811 int cmdutils_read_file(const char *filename, char **bufptr, size_t *size)
1814 FILE *f = av_fopen_utf8(filename, "rb");
1817 av_log(NULL, AV_LOG_ERROR, "Cannot read file '%s': %s\n", filename,
1819 return AVERROR(errno);
1821 fseek(f, 0, SEEK_END);
1823 fseek(f, 0, SEEK_SET);
1824 if (*size == (size_t)-1) {
1825 av_log(NULL, AV_LOG_ERROR, "IO error: %s\n", strerror(errno));
1827 return AVERROR(errno);
1829 *bufptr = av_malloc(*size + 1);
1831 av_log(NULL, AV_LOG_ERROR, "Could not allocate file buffer\n");
1833 return AVERROR(ENOMEM);
1835 ret = fread(*bufptr, 1, *size, f);
1839 av_log(NULL, AV_LOG_ERROR, "Error while reading file '%s': %s\n",
1840 filename, strerror(errno));
1841 ret = AVERROR(errno);
1846 (*bufptr)[(*size)++] = '\0';
1853 FILE *get_preset_file(char *filename, size_t filename_size,
1854 const char *preset_name, int is_path,
1855 const char *codec_name)
1859 const char *base[3] = { getenv("FFMPEG_DATADIR"),
1864 av_strlcpy(filename, preset_name, filename_size);
1865 f = fopen(filename, "r");
1868 char datadir[MAX_PATH], *ls;
1871 if (GetModuleFileNameA(GetModuleHandleA(NULL), datadir, sizeof(datadir) - 1))
1873 for (ls = datadir; ls < datadir + strlen(datadir); ls++)
1874 if (*ls == '\\') *ls = '/';
1876 if (ls = strrchr(datadir, '/'))
1879 strncat(datadir, "/ffpresets", sizeof(datadir) - 1 - strlen(datadir));
1884 for (i = 0; i < 3 && !f; i++) {
1887 snprintf(filename, filename_size, "%s%s/%s.ffpreset", base[i],
1888 i != 1 ? "" : "/.ffmpeg", preset_name);
1889 f = fopen(filename, "r");
1890 if (!f && codec_name) {
1891 snprintf(filename, filename_size,
1892 "%s%s/%s-%s.ffpreset",
1893 base[i], i != 1 ? "" : "/.ffmpeg", codec_name,
1895 f = fopen(filename, "r");
1903 int check_stream_specifier(AVFormatContext *s, AVStream *st, const char *spec)
1905 int ret = avformat_match_stream_specifier(s, st, spec);
1907 av_log(s, AV_LOG_ERROR, "Invalid stream specifier: %s.\n", spec);
1911 AVDictionary *filter_codec_opts(AVDictionary *opts, enum AVCodecID codec_id,
1912 AVFormatContext *s, AVStream *st, AVCodec *codec)
1914 AVDictionary *ret = NULL;
1915 AVDictionaryEntry *t = NULL;
1916 int flags = s->oformat ? AV_OPT_FLAG_ENCODING_PARAM
1917 : AV_OPT_FLAG_DECODING_PARAM;
1919 const AVClass *cc = avcodec_get_class();
1922 codec = s->oformat ? avcodec_find_encoder(codec_id)
1923 : avcodec_find_decoder(codec_id);
1925 switch (st->codec->codec_type) {
1926 case AVMEDIA_TYPE_VIDEO:
1928 flags |= AV_OPT_FLAG_VIDEO_PARAM;
1930 case AVMEDIA_TYPE_AUDIO:
1932 flags |= AV_OPT_FLAG_AUDIO_PARAM;
1934 case AVMEDIA_TYPE_SUBTITLE:
1936 flags |= AV_OPT_FLAG_SUBTITLE_PARAM;
1940 while (t = av_dict_get(opts, "", t, AV_DICT_IGNORE_SUFFIX)) {
1941 char *p = strchr(t->key, ':');
1943 /* check stream specification in opt name */
1945 switch (check_stream_specifier(s, st, p + 1)) {
1946 case 1: *p = 0; break;
1948 default: return NULL;
1951 if (av_opt_find(&cc, t->key, NULL, flags, AV_OPT_SEARCH_FAKE_OBJ) ||
1953 (codec->priv_class &&
1954 av_opt_find(&codec->priv_class, t->key, NULL, flags,
1955 AV_OPT_SEARCH_FAKE_OBJ)))
1956 av_dict_set(&ret, t->key, t->value, 0);
1957 else if (t->key[0] == prefix &&
1958 av_opt_find(&cc, t->key + 1, NULL, flags,
1959 AV_OPT_SEARCH_FAKE_OBJ))
1960 av_dict_set(&ret, t->key + 1, t->value, 0);
1968 AVDictionary **setup_find_stream_info_opts(AVFormatContext *s,
1969 AVDictionary *codec_opts)
1972 AVDictionary **opts;
1976 opts = av_mallocz_array(s->nb_streams, sizeof(*opts));
1978 av_log(NULL, AV_LOG_ERROR,
1979 "Could not alloc memory for stream options.\n");
1982 for (i = 0; i < s->nb_streams; i++)
1983 opts[i] = filter_codec_opts(codec_opts, s->streams[i]->codec->codec_id,
1984 s, s->streams[i], NULL);
1988 void *grow_array(void *array, int elem_size, int *size, int new_size)
1990 if (new_size >= INT_MAX / elem_size) {
1991 av_log(NULL, AV_LOG_ERROR, "Array too big.\n");
1994 if (*size < new_size) {
1995 uint8_t *tmp = av_realloc(array, new_size*elem_size);
1997 av_log(NULL, AV_LOG_ERROR, "Could not alloc buffer.\n");
2000 memset(tmp + *size*elem_size, 0, (new_size-*size) * elem_size);