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"
50 #include "libavutil/cpu.h"
54 #include "libavformat/network.h"
56 #if HAVE_SYS_RESOURCE_H
58 #include <sys/resource.h>
61 #include "libavutil/opencl.h"
65 static int init_report(const char *env);
67 struct SwsContext *sws_opts;
68 AVDictionary *swr_opts;
69 AVDictionary *format_opts, *codec_opts, *resample_opts;
71 const int this_year = 2013;
73 static FILE *report_file;
79 sws_opts = sws_getContext(16, 16, 0, 16, 16, 0, SWS_BICUBIC,
83 void uninit_opts(void)
86 sws_freeContext(sws_opts);
90 av_dict_free(&swr_opts);
91 av_dict_free(&format_opts);
92 av_dict_free(&codec_opts);
93 av_dict_free(&resample_opts);
96 void log_callback_help(void *ptr, int level, const char *fmt, va_list vl)
98 vfprintf(stdout, fmt, vl);
101 static void log_callback_report(void *ptr, int level, const char *fmt, va_list vl)
105 static int print_prefix = 1;
108 av_log_default_callback(ptr, level, fmt, vl);
109 av_log_format_line(ptr, level, fmt, vl2, line, sizeof(line), &print_prefix);
111 fputs(line, report_file);
115 static void (*program_exit)(int ret);
117 void register_exit(void (*cb)(int ret))
122 void exit_program(int ret)
130 double parse_number_or_die(const char *context, const char *numstr, int type,
131 double min, double max)
135 double d = av_strtod(numstr, &tail);
137 error = "Expected number for %s but found: %s\n";
138 else if (d < min || d > max)
139 error = "The value for %s was %s which is not within %f - %f\n";
140 else if (type == OPT_INT64 && (int64_t)d != d)
141 error = "Expected int64 for %s but found %s\n";
142 else if (type == OPT_INT && (int)d != d)
143 error = "Expected int for %s but found %s\n";
146 av_log(NULL, AV_LOG_FATAL, error, context, numstr, min, max);
151 int64_t parse_time_or_die(const char *context, const char *timestr,
155 if (av_parse_time(&us, timestr, is_duration) < 0) {
156 av_log(NULL, AV_LOG_FATAL, "Invalid %s specification for %s: %s\n",
157 is_duration ? "duration" : "date", context, timestr);
163 void show_help_options(const OptionDef *options, const char *msg, int req_flags,
164 int rej_flags, int alt_flags)
170 for (po = options; po->name != NULL; po++) {
173 if (((po->flags & req_flags) != req_flags) ||
174 (alt_flags && !(po->flags & alt_flags)) ||
175 (po->flags & rej_flags))
182 av_strlcpy(buf, po->name, sizeof(buf));
184 av_strlcat(buf, " ", sizeof(buf));
185 av_strlcat(buf, po->argname, sizeof(buf));
187 printf("-%-17s %s\n", buf, po->help);
192 void show_help_children(const AVClass *class, int flags)
194 const AVClass *child = NULL;
196 av_opt_show2(&class, NULL, flags, 0);
200 while (child = av_opt_child_class_next(class, child))
201 show_help_children(child, flags);
204 static const OptionDef *find_option(const OptionDef *po, const char *name)
206 const char *p = strchr(name, ':');
207 int len = p ? p - name : strlen(name);
209 while (po->name != NULL) {
210 if (!strncmp(name, po->name, len) && strlen(po->name) == len)
217 /* _WIN32 means using the windows libc - cygwin doesn't define that
218 * by default. HAVE_COMMANDLINETOARGVW is true on cygwin, while
219 * it doesn't provide the actual command line via GetCommandLineW(). */
220 #if HAVE_COMMANDLINETOARGVW && defined(_WIN32)
222 #include <shellapi.h>
223 /* Will be leaked on exit */
224 static char** win32_argv_utf8 = NULL;
225 static int win32_argc = 0;
228 * Prepare command line arguments for executable.
229 * For Windows - perform wide-char to UTF-8 conversion.
230 * Input arguments should be main() function arguments.
231 * @param argc_ptr Arguments number (including executable)
232 * @param argv_ptr Arguments list.
234 static void prepare_app_arguments(int *argc_ptr, char ***argv_ptr)
238 int i, buffsize = 0, offset = 0;
240 if (win32_argv_utf8) {
241 *argc_ptr = win32_argc;
242 *argv_ptr = win32_argv_utf8;
247 argv_w = CommandLineToArgvW(GetCommandLineW(), &win32_argc);
248 if (win32_argc <= 0 || !argv_w)
251 /* determine the UTF-8 buffer size (including NULL-termination symbols) */
252 for (i = 0; i < win32_argc; i++)
253 buffsize += WideCharToMultiByte(CP_UTF8, 0, argv_w[i], -1,
254 NULL, 0, NULL, NULL);
256 win32_argv_utf8 = av_mallocz(sizeof(char *) * (win32_argc + 1) + buffsize);
257 argstr_flat = (char *)win32_argv_utf8 + sizeof(char *) * (win32_argc + 1);
258 if (win32_argv_utf8 == NULL) {
263 for (i = 0; i < win32_argc; i++) {
264 win32_argv_utf8[i] = &argstr_flat[offset];
265 offset += WideCharToMultiByte(CP_UTF8, 0, argv_w[i], -1,
266 &argstr_flat[offset],
267 buffsize - offset, NULL, NULL);
269 win32_argv_utf8[i] = NULL;
272 *argc_ptr = win32_argc;
273 *argv_ptr = win32_argv_utf8;
276 static inline void prepare_app_arguments(int *argc_ptr, char ***argv_ptr)
280 #endif /* HAVE_COMMANDLINETOARGVW */
282 static int write_option(void *optctx, const OptionDef *po, const char *opt,
285 /* new-style options contain an offset into optctx, old-style address of
287 void *dst = po->flags & (OPT_OFFSET | OPT_SPEC) ?
288 (uint8_t *)optctx + po->u.off : po->u.dst_ptr;
291 if (po->flags & OPT_SPEC) {
292 SpecifierOpt **so = dst;
293 char *p = strchr(opt, ':');
295 dstcount = (int *)(so + 1);
296 *so = grow_array(*so, sizeof(**so), dstcount, *dstcount + 1);
297 (*so)[*dstcount - 1].specifier = av_strdup(p ? p + 1 : "");
298 dst = &(*so)[*dstcount - 1].u;
301 if (po->flags & OPT_STRING) {
303 str = av_strdup(arg);
306 } else if (po->flags & OPT_BOOL || po->flags & OPT_INT) {
307 *(int *)dst = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
308 } else if (po->flags & OPT_INT64) {
309 *(int64_t *)dst = parse_number_or_die(opt, arg, OPT_INT64, INT64_MIN, INT64_MAX);
310 } else if (po->flags & OPT_TIME) {
311 *(int64_t *)dst = parse_time_or_die(opt, arg, 1);
312 } else if (po->flags & OPT_FLOAT) {
313 *(float *)dst = parse_number_or_die(opt, arg, OPT_FLOAT, -INFINITY, INFINITY);
314 } else if (po->flags & OPT_DOUBLE) {
315 *(double *)dst = parse_number_or_die(opt, arg, OPT_DOUBLE, -INFINITY, INFINITY);
316 } else if (po->u.func_arg) {
317 int ret = po->u.func_arg(optctx, opt, arg);
319 av_log(NULL, AV_LOG_ERROR,
320 "Failed to set value '%s' for option '%s': %s\n",
321 arg, opt, av_err2str(ret));
325 if (po->flags & OPT_EXIT)
331 int parse_option(void *optctx, const char *opt, const char *arg,
332 const OptionDef *options)
337 po = find_option(options, opt);
338 if (!po->name && opt[0] == 'n' && opt[1] == 'o') {
339 /* handle 'no' bool option */
340 po = find_option(options, opt + 2);
341 if ((po->name && (po->flags & OPT_BOOL)))
343 } else if (po->flags & OPT_BOOL)
347 po = find_option(options, "default");
349 av_log(NULL, AV_LOG_ERROR, "Unrecognized option '%s'\n", opt);
350 return AVERROR(EINVAL);
352 if (po->flags & HAS_ARG && !arg) {
353 av_log(NULL, AV_LOG_ERROR, "Missing argument for option '%s'\n", opt);
354 return AVERROR(EINVAL);
357 ret = write_option(optctx, po, opt, arg);
361 return !!(po->flags & HAS_ARG);
364 void parse_options(void *optctx, int argc, char **argv, const OptionDef *options,
365 void (*parse_arg_function)(void *, const char*))
368 int optindex, handleoptions = 1, ret;
370 /* perform system-dependent conversions for arguments list */
371 prepare_app_arguments(&argc, &argv);
375 while (optindex < argc) {
376 opt = argv[optindex++];
378 if (handleoptions && opt[0] == '-' && opt[1] != '\0') {
379 if (opt[1] == '-' && opt[2] == '\0') {
385 if ((ret = parse_option(optctx, opt, argv[optindex], options)) < 0)
389 if (parse_arg_function)
390 parse_arg_function(optctx, opt);
395 int parse_optgroup(void *optctx, OptionGroup *g)
399 av_log(NULL, AV_LOG_DEBUG, "Parsing a group of options: %s %s.\n",
400 g->group_def->name, g->arg);
402 for (i = 0; i < g->nb_opts; i++) {
403 Option *o = &g->opts[i];
405 if (g->group_def->flags &&
406 !(g->group_def->flags & o->opt->flags)) {
407 av_log(NULL, AV_LOG_ERROR, "Option %s (%s) cannot be applied to "
408 "%s %s -- you are trying to apply an input option to an "
409 "output file or vice versa. Move this option before the "
410 "file it belongs to.\n", o->key, o->opt->help,
411 g->group_def->name, g->arg);
412 return AVERROR(EINVAL);
415 av_log(NULL, AV_LOG_DEBUG, "Applying option %s (%s) with argument %s.\n",
416 o->key, o->opt->help, o->val);
418 ret = write_option(optctx, o->opt, o->key, o->val);
423 av_log(NULL, AV_LOG_DEBUG, "Successfully parsed a group of options.\n");
428 int locate_option(int argc, char **argv, const OptionDef *options,
434 for (i = 1; i < argc; i++) {
435 const char *cur_opt = argv[i];
437 if (*cur_opt++ != '-')
440 po = find_option(options, cur_opt);
441 if (!po->name && cur_opt[0] == 'n' && cur_opt[1] == 'o')
442 po = find_option(options, cur_opt + 2);
444 if ((!po->name && !strcmp(cur_opt, optname)) ||
445 (po->name && !strcmp(optname, po->name)))
448 if (po->flags & HAS_ARG)
454 static void dump_argument(const char *a)
456 const unsigned char *p;
459 if (!((*p >= '+' && *p <= ':') || (*p >= '@' && *p <= 'Z') ||
460 *p == '_' || (*p >= 'a' && *p <= 'z')))
463 fputs(a, report_file);
466 fputc('"', report_file);
467 for (p = a; *p; p++) {
468 if (*p == '\\' || *p == '"' || *p == '$' || *p == '`')
469 fprintf(report_file, "\\%c", *p);
470 else if (*p < ' ' || *p > '~')
471 fprintf(report_file, "\\x%02x", *p);
473 fputc(*p, report_file);
475 fputc('"', report_file);
478 void parse_loglevel(int argc, char **argv, const OptionDef *options)
480 int idx = locate_option(argc, argv, options, "loglevel");
483 idx = locate_option(argc, argv, options, "v");
484 if (idx && argv[idx + 1])
485 opt_loglevel(NULL, "loglevel", argv[idx + 1]);
486 idx = locate_option(argc, argv, options, "report");
487 if ((env = getenv("FFREPORT")) || idx) {
491 fprintf(report_file, "Command line:\n");
492 for (i = 0; i < argc; i++) {
493 dump_argument(argv[i]);
494 fputc(i < argc - 1 ? ' ' : '\n', report_file);
501 static const AVOption *opt_find(void *obj, const char *name, const char *unit,
502 int opt_flags, int search_flags)
504 const AVOption *o = av_opt_find(obj, name, unit, opt_flags, search_flags);
510 #define FLAGS (o->type == AV_OPT_TYPE_FLAGS) ? AV_DICT_APPEND : 0
511 int opt_default(void *optctx, const char *opt, const char *arg)
515 char opt_stripped[128];
517 const AVClass *cc = avcodec_get_class(), *fc = avformat_get_class();
518 #if CONFIG_AVRESAMPLE
519 const AVClass *rc = avresample_get_class();
521 const AVClass *sc, *swr_class;
523 if (!strcmp(opt, "debug") || !strcmp(opt, "fdebug"))
524 av_log_set_level(AV_LOG_DEBUG);
526 if (!(p = strchr(opt, ':')))
527 p = opt + strlen(opt);
528 av_strlcpy(opt_stripped, opt, FFMIN(sizeof(opt_stripped), p - opt + 1));
530 if ((o = opt_find(&cc, opt_stripped, NULL, 0,
531 AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ)) ||
532 ((opt[0] == 'v' || opt[0] == 'a' || opt[0] == 's') &&
533 (o = opt_find(&cc, opt + 1, NULL, 0, AV_OPT_SEARCH_FAKE_OBJ)))) {
534 av_dict_set(&codec_opts, opt, arg, FLAGS);
537 if ((o = opt_find(&fc, opt, NULL, 0,
538 AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ))) {
539 av_dict_set(&format_opts, opt, arg, FLAGS);
541 av_log(NULL, AV_LOG_VERBOSE, "Routing option %s to both codec and muxer layer\n", opt);
545 sc = sws_get_class();
546 if (!consumed && opt_find(&sc, opt, NULL, 0,
547 AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ)) {
548 // XXX we only support sws_flags, not arbitrary sws options
549 int ret = av_opt_set(sws_opts, opt, arg, 0);
551 av_log(NULL, AV_LOG_ERROR, "Error setting option %s.\n", opt);
557 #if CONFIG_SWRESAMPLE
558 swr_class = swr_get_class();
559 if (!consumed && (o=opt_find(&swr_class, opt, NULL, 0,
560 AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ))) {
561 struct SwrContext *swr = swr_alloc();
562 int ret = av_opt_set(swr, opt, arg, 0);
565 av_log(NULL, AV_LOG_ERROR, "Error setting option %s.\n", opt);
568 av_dict_set(&swr_opts, opt, arg, FLAGS);
572 #if CONFIG_AVRESAMPLE
573 if ((o=opt_find(&rc, opt, NULL, 0,
574 AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ))) {
575 av_dict_set(&resample_opts, opt, arg, FLAGS);
582 return AVERROR_OPTION_NOT_FOUND;
586 * Check whether given option is a group separator.
588 * @return index of the group definition that matched or -1 if none
590 static int match_group_separator(const OptionGroupDef *groups, int nb_groups,
595 for (i = 0; i < nb_groups; i++) {
596 const OptionGroupDef *p = &groups[i];
597 if (p->sep && !strcmp(p->sep, opt))
605 * Finish parsing an option group.
607 * @param group_idx which group definition should this group belong to
608 * @param arg argument of the group delimiting option
610 static void finish_group(OptionParseContext *octx, int group_idx,
613 OptionGroupList *l = &octx->groups[group_idx];
616 GROW_ARRAY(l->groups, l->nb_groups);
617 g = &l->groups[l->nb_groups - 1];
619 *g = octx->cur_group;
621 g->group_def = l->group_def;
623 g->sws_opts = sws_opts;
625 g->swr_opts = swr_opts;
626 g->codec_opts = codec_opts;
627 g->format_opts = format_opts;
628 g->resample_opts = resample_opts;
632 resample_opts = NULL;
639 memset(&octx->cur_group, 0, sizeof(octx->cur_group));
643 * Add an option instance to currently parsed group.
645 static void add_opt(OptionParseContext *octx, const OptionDef *opt,
646 const char *key, const char *val)
648 int global = !(opt->flags & (OPT_PERFILE | OPT_SPEC | OPT_OFFSET));
649 OptionGroup *g = global ? &octx->global_opts : &octx->cur_group;
651 GROW_ARRAY(g->opts, g->nb_opts);
652 g->opts[g->nb_opts - 1].opt = opt;
653 g->opts[g->nb_opts - 1].key = key;
654 g->opts[g->nb_opts - 1].val = val;
657 static void init_parse_context(OptionParseContext *octx,
658 const OptionGroupDef *groups, int nb_groups)
660 static const OptionGroupDef global_group = { "global" };
663 memset(octx, 0, sizeof(*octx));
665 octx->nb_groups = nb_groups;
666 octx->groups = av_mallocz(sizeof(*octx->groups) * octx->nb_groups);
670 for (i = 0; i < octx->nb_groups; i++)
671 octx->groups[i].group_def = &groups[i];
673 octx->global_opts.group_def = &global_group;
674 octx->global_opts.arg = "";
679 void uninit_parse_context(OptionParseContext *octx)
683 for (i = 0; i < octx->nb_groups; i++) {
684 OptionGroupList *l = &octx->groups[i];
686 for (j = 0; j < l->nb_groups; j++) {
687 av_freep(&l->groups[j].opts);
688 av_dict_free(&l->groups[j].codec_opts);
689 av_dict_free(&l->groups[j].format_opts);
690 av_dict_free(&l->groups[j].resample_opts);
692 sws_freeContext(l->groups[j].sws_opts);
694 av_dict_free(&l->groups[j].swr_opts);
696 av_freep(&l->groups);
698 av_freep(&octx->groups);
700 av_freep(&octx->cur_group.opts);
701 av_freep(&octx->global_opts.opts);
706 int split_commandline(OptionParseContext *octx, int argc, char *argv[],
707 const OptionDef *options,
708 const OptionGroupDef *groups, int nb_groups)
713 /* perform system-dependent conversions for arguments list */
714 prepare_app_arguments(&argc, &argv);
716 init_parse_context(octx, groups, nb_groups);
717 av_log(NULL, AV_LOG_DEBUG, "Splitting the commandline.\n");
719 while (optindex < argc) {
720 const char *opt = argv[optindex++], *arg;
724 av_log(NULL, AV_LOG_DEBUG, "Reading option '%s' ...", opt);
726 if (opt[0] == '-' && opt[1] == '-' && !opt[2]) {
730 /* unnamed group separators, e.g. output filename */
731 if (opt[0] != '-' || !opt[1] || dashdash+1 == optindex) {
732 finish_group(octx, 0, opt);
733 av_log(NULL, AV_LOG_DEBUG, " matched as %s.\n", groups[0].name);
738 #define GET_ARG(arg) \
740 arg = argv[optindex++]; \
742 av_log(NULL, AV_LOG_ERROR, "Missing argument for option '%s'.\n", opt);\
743 return AVERROR(EINVAL); \
747 /* named group separators, e.g. -i */
748 if ((ret = match_group_separator(groups, nb_groups, opt)) >= 0) {
750 finish_group(octx, ret, arg);
751 av_log(NULL, AV_LOG_DEBUG, " matched as %s with argument '%s'.\n",
752 groups[ret].name, arg);
757 po = find_option(options, opt);
759 if (po->flags & OPT_EXIT) {
760 /* optional argument, e.g. -h */
761 arg = argv[optindex++];
762 } else if (po->flags & HAS_ARG) {
768 add_opt(octx, po, opt, arg);
769 av_log(NULL, AV_LOG_DEBUG, " matched as option '%s' (%s) with "
770 "argument '%s'.\n", po->name, po->help, arg);
775 if (argv[optindex]) {
776 ret = opt_default(NULL, opt, argv[optindex]);
778 av_log(NULL, AV_LOG_DEBUG, " matched as AVOption '%s' with "
779 "argument '%s'.\n", opt, argv[optindex]);
782 } else if (ret != AVERROR_OPTION_NOT_FOUND) {
783 av_log(NULL, AV_LOG_ERROR, "Error parsing option '%s' "
784 "with argument '%s'.\n", opt, argv[optindex]);
789 /* boolean -nofoo options */
790 if (opt[0] == 'n' && opt[1] == 'o' &&
791 (po = find_option(options, opt + 2)) &&
792 po->name && po->flags & OPT_BOOL) {
793 add_opt(octx, po, opt, "0");
794 av_log(NULL, AV_LOG_DEBUG, " matched as option '%s' (%s) with "
795 "argument 0.\n", po->name, po->help);
799 av_log(NULL, AV_LOG_ERROR, "Unrecognized option '%s'.\n", opt);
800 return AVERROR_OPTION_NOT_FOUND;
803 if (octx->cur_group.nb_opts || codec_opts || format_opts || resample_opts)
804 av_log(NULL, AV_LOG_WARNING, "Trailing options were found on the "
807 av_log(NULL, AV_LOG_DEBUG, "Finished splitting the commandline.\n");
812 int opt_cpuflags(void *optctx, const char *opt, const char *arg)
815 unsigned flags = av_get_cpu_flags();
817 if ((ret = av_parse_cpu_caps(&flags, arg)) < 0)
820 av_force_cpu_flags(flags);
824 int opt_loglevel(void *optctx, const char *opt, const char *arg)
826 const struct { const char *name; int level; } log_levels[] = {
827 { "quiet" , AV_LOG_QUIET },
828 { "panic" , AV_LOG_PANIC },
829 { "fatal" , AV_LOG_FATAL },
830 { "error" , AV_LOG_ERROR },
831 { "warning", AV_LOG_WARNING },
832 { "info" , AV_LOG_INFO },
833 { "verbose", AV_LOG_VERBOSE },
834 { "debug" , AV_LOG_DEBUG },
840 tail = strstr(arg, "repeat");
841 av_log_set_flags(tail ? 0 : AV_LOG_SKIP_REPEATED);
843 arg += 6 + (arg[6]=='+');
847 for (i = 0; i < FF_ARRAY_ELEMS(log_levels); i++) {
848 if (!strcmp(log_levels[i].name, arg)) {
849 av_log_set_level(log_levels[i].level);
854 level = strtol(arg, &tail, 10);
856 av_log(NULL, AV_LOG_FATAL, "Invalid loglevel \"%s\". "
857 "Possible levels are numbers or:\n", arg);
858 for (i = 0; i < FF_ARRAY_ELEMS(log_levels); i++)
859 av_log(NULL, AV_LOG_FATAL, "\"%s\"\n", log_levels[i].name);
862 av_log_set_level(level);
866 static void expand_filename_template(AVBPrint *bp, const char *template,
871 while ((c = *(template++))) {
873 if (!(c = *(template++)))
877 av_bprintf(bp, "%s", program_name);
880 av_bprintf(bp, "%04d%02d%02d-%02d%02d%02d",
881 tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
882 tm->tm_hour, tm->tm_min, tm->tm_sec);
885 av_bprint_chars(bp, c, 1);
889 av_bprint_chars(bp, c, 1);
894 static int init_report(const char *env)
896 char *filename_template = NULL;
903 if (report_file) /* already opened */
906 tm = localtime(&now);
908 while (env && *env) {
909 if ((ret = av_opt_get_key_value(&env, "=", ":", 0, &key, &val)) < 0) {
911 av_log(NULL, AV_LOG_ERROR,
912 "Failed to parse FFREPORT environment variable: %s\n",
919 if (!strcmp(key, "file")) {
920 av_free(filename_template);
921 filename_template = val;
924 av_log(NULL, AV_LOG_ERROR, "Unknown key '%s' in FFREPORT\n", key);
930 av_bprint_init(&filename, 0, 1);
931 expand_filename_template(&filename,
932 av_x_if_null(filename_template, "%p-%t.log"), tm);
933 av_free(filename_template);
934 if (!av_bprint_is_complete(&filename)) {
935 av_log(NULL, AV_LOG_ERROR, "Out of memory building report file name\n");
936 return AVERROR(ENOMEM);
939 report_file = fopen(filename.str, "w");
941 av_log(NULL, AV_LOG_ERROR, "Failed to open report \"%s\": %s\n",
942 filename.str, strerror(errno));
943 return AVERROR(errno);
945 av_log_set_callback(log_callback_report);
946 av_log(NULL, AV_LOG_INFO,
947 "%s started on %04d-%02d-%02d at %02d:%02d:%02d\n"
948 "Report written to \"%s\"\n",
950 tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
951 tm->tm_hour, tm->tm_min, tm->tm_sec,
953 av_bprint_finalize(&filename, NULL);
957 int opt_report(const char *opt)
959 return init_report(NULL);
962 int opt_max_alloc(void *optctx, const char *opt, const char *arg)
967 max = strtol(arg, &tail, 10);
969 av_log(NULL, AV_LOG_FATAL, "Invalid max_alloc \"%s\".\n", arg);
976 int opt_timelimit(void *optctx, const char *opt, const char *arg)
979 int lim = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
980 struct rlimit rl = { lim, lim + 1 };
981 if (setrlimit(RLIMIT_CPU, &rl))
984 av_log(NULL, AV_LOG_WARNING, "-%s not implemented on this OS\n", opt);
990 int opt_opencl(void *optctx, const char *opt, const char *arg)
993 const char *opts = arg;
996 ret = av_opt_get_key_value(&opts, "=", ":", 0, &key, &value);
999 ret = av_opencl_set_option(key, value);
1009 void print_error(const char *filename, int err)
1012 const char *errbuf_ptr = errbuf;
1014 if (av_strerror(err, errbuf, sizeof(errbuf)) < 0)
1015 errbuf_ptr = strerror(AVUNERROR(err));
1016 av_log(NULL, AV_LOG_ERROR, "%s: %s\n", filename, errbuf_ptr);
1019 static int warned_cfg = 0;
1022 #define SHOW_VERSION 2
1023 #define SHOW_CONFIG 4
1024 #define SHOW_COPYRIGHT 8
1026 #define PRINT_LIB_INFO(libname, LIBNAME, flags, level) \
1027 if (CONFIG_##LIBNAME) { \
1028 const char *indent = flags & INDENT? " " : ""; \
1029 if (flags & SHOW_VERSION) { \
1030 unsigned int version = libname##_version(); \
1031 av_log(NULL, level, \
1032 "%slib%-11s %2d.%3d.%3d / %2d.%3d.%3d\n", \
1034 LIB##LIBNAME##_VERSION_MAJOR, \
1035 LIB##LIBNAME##_VERSION_MINOR, \
1036 LIB##LIBNAME##_VERSION_MICRO, \
1037 version >> 16, version >> 8 & 0xff, version & 0xff); \
1039 if (flags & SHOW_CONFIG) { \
1040 const char *cfg = libname##_configuration(); \
1041 if (strcmp(FFMPEG_CONFIGURATION, cfg)) { \
1042 if (!warned_cfg) { \
1043 av_log(NULL, level, \
1044 "%sWARNING: library configuration mismatch\n", \
1048 av_log(NULL, level, "%s%-11s configuration: %s\n", \
1049 indent, #libname, cfg); \
1054 static void print_all_libs_info(int flags, int level)
1056 PRINT_LIB_INFO(avutil, AVUTIL, flags, level);
1057 PRINT_LIB_INFO(avcodec, AVCODEC, flags, level);
1058 PRINT_LIB_INFO(avformat, AVFORMAT, flags, level);
1059 PRINT_LIB_INFO(avdevice, AVDEVICE, flags, level);
1060 PRINT_LIB_INFO(avfilter, AVFILTER, flags, level);
1061 PRINT_LIB_INFO(avresample, AVRESAMPLE, flags, level);
1062 PRINT_LIB_INFO(swscale, SWSCALE, flags, level);
1063 PRINT_LIB_INFO(swresample,SWRESAMPLE, flags, level);
1064 PRINT_LIB_INFO(postproc, POSTPROC, flags, level);
1067 static void print_program_info(int flags, int level)
1069 const char *indent = flags & INDENT? " " : "";
1071 av_log(NULL, level, "%s version " FFMPEG_VERSION, program_name);
1072 if (flags & SHOW_COPYRIGHT)
1073 av_log(NULL, level, " Copyright (c) %d-%d the FFmpeg developers",
1074 program_birth_year, this_year);
1075 av_log(NULL, level, "\n");
1076 av_log(NULL, level, "%sbuilt on %s %s with %s\n",
1077 indent, __DATE__, __TIME__, CC_IDENT);
1079 av_log(NULL, level, "%sconfiguration: " FFMPEG_CONFIGURATION "\n", indent);
1082 static void print_buildconf(int flags, int level)
1084 const char *indent = flags & INDENT ? " " : "";
1085 char str[] = { FFMPEG_CONFIGURATION };
1086 char *conflist, *remove_tilde, *splitconf;
1088 // Change all the ' --' strings to '~--' so that
1089 // they can be identified as tokens.
1090 while ((conflist = strstr(str, " --")) != NULL) {
1091 strncpy(conflist, "~--", 3);
1094 // Compensate for the weirdness this would cause
1095 // when passing 'pkg-config --static'.
1096 while ((remove_tilde = strstr(str, "pkg-config~")) != NULL) {
1097 strncpy(remove_tilde, "pkg-config ", 11);
1100 splitconf = strtok(str, "~");
1101 av_log(NULL, level, "\n%sconfiguration:\n", indent);
1102 while (splitconf != NULL) {
1103 av_log(NULL, level, "%s%s%s\n", indent, indent, splitconf);
1104 splitconf = strtok(NULL, "~");
1108 void show_banner(int argc, char **argv, const OptionDef *options)
1110 int idx = locate_option(argc, argv, options, "version");
1114 print_program_info (INDENT|SHOW_COPYRIGHT, AV_LOG_INFO);
1115 print_all_libs_info(INDENT|SHOW_CONFIG, AV_LOG_INFO);
1116 print_all_libs_info(INDENT|SHOW_VERSION, AV_LOG_INFO);
1119 int show_version(void *optctx, const char *opt, const char *arg)
1121 av_log_set_callback(log_callback_help);
1122 print_program_info (0 , AV_LOG_INFO);
1123 print_all_libs_info(SHOW_VERSION, AV_LOG_INFO);
1128 int show_buildconf(void *optctx, const char *opt, const char *arg)
1130 av_log_set_callback(log_callback_help);
1131 print_buildconf (INDENT|0, AV_LOG_INFO);
1136 int show_license(void *optctx, const char *opt, const char *arg)
1140 "This version of %s has nonfree parts compiled in.\n"
1141 "Therefore it is not legally redistributable.\n",
1145 "%s is free software; you can redistribute it and/or modify\n"
1146 "it under the terms of the GNU General Public License as published by\n"
1147 "the Free Software Foundation; either version 3 of the License, or\n"
1148 "(at your option) any later version.\n"
1150 "%s is distributed in the hope that it will be useful,\n"
1151 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
1152 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
1153 "GNU General Public License for more details.\n"
1155 "You should have received a copy of the GNU General Public License\n"
1156 "along with %s. If not, see <http://www.gnu.org/licenses/>.\n",
1157 program_name, program_name, program_name );
1160 "%s is free software; you can redistribute it and/or modify\n"
1161 "it under the terms of the GNU General Public License as published by\n"
1162 "the Free Software Foundation; either version 2 of the License, or\n"
1163 "(at your option) any later version.\n"
1165 "%s is distributed in the hope that it will be useful,\n"
1166 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
1167 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
1168 "GNU General Public License for more details.\n"
1170 "You should have received a copy of the GNU General Public License\n"
1171 "along with %s; if not, write to the Free Software\n"
1172 "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n",
1173 program_name, program_name, program_name );
1176 "%s is free software; you can redistribute it and/or modify\n"
1177 "it under the terms of the GNU Lesser General Public License as published by\n"
1178 "the Free Software Foundation; either version 3 of the License, or\n"
1179 "(at your option) any later version.\n"
1181 "%s is distributed in the hope that it will be useful,\n"
1182 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
1183 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
1184 "GNU Lesser General Public License for more details.\n"
1186 "You should have received a copy of the GNU Lesser General Public License\n"
1187 "along with %s. If not, see <http://www.gnu.org/licenses/>.\n",
1188 program_name, program_name, program_name );
1191 "%s is free software; you can redistribute it and/or\n"
1192 "modify it under the terms of the GNU Lesser General Public\n"
1193 "License as published by the Free Software Foundation; either\n"
1194 "version 2.1 of the License, or (at your option) any later version.\n"
1196 "%s is distributed in the hope that it will be useful,\n"
1197 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
1198 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU\n"
1199 "Lesser General Public License for more details.\n"
1201 "You should have received a copy of the GNU Lesser General Public\n"
1202 "License along with %s; if not, write to the Free Software\n"
1203 "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n",
1204 program_name, program_name, program_name );
1210 int show_formats(void *optctx, const char *opt, const char *arg)
1212 AVInputFormat *ifmt = NULL;
1213 AVOutputFormat *ofmt = NULL;
1214 const char *last_name;
1216 printf("File formats:\n"
1217 " D. = Demuxing supported\n"
1218 " .E = Muxing supported\n"
1224 const char *name = NULL;
1225 const char *long_name = NULL;
1227 while ((ofmt = av_oformat_next(ofmt))) {
1228 if ((name == NULL || strcmp(ofmt->name, name) < 0) &&
1229 strcmp(ofmt->name, last_name) > 0) {
1231 long_name = ofmt->long_name;
1235 while ((ifmt = av_iformat_next(ifmt))) {
1236 if ((name == NULL || strcmp(ifmt->name, name) < 0) &&
1237 strcmp(ifmt->name, last_name) > 0) {
1239 long_name = ifmt->long_name;
1242 if (name && strcmp(ifmt->name, name) == 0)
1249 printf(" %s%s %-15s %s\n",
1253 long_name ? long_name:" ");
1258 #define PRINT_CODEC_SUPPORTED(codec, field, type, list_name, term, get_name) \
1259 if (codec->field) { \
1260 const type *p = codec->field; \
1262 printf(" Supported " list_name ":"); \
1263 while (*p != term) { \
1265 printf(" %s", name); \
1271 static void print_codec(const AVCodec *c)
1273 int encoder = av_codec_is_encoder(c);
1275 printf("%s %s [%s]:\n", encoder ? "Encoder" : "Decoder", c->name,
1276 c->long_name ? c->long_name : "");
1278 if (c->type == AVMEDIA_TYPE_VIDEO ||
1279 c->type == AVMEDIA_TYPE_AUDIO) {
1280 printf(" Threading capabilities: ");
1281 switch (c->capabilities & (CODEC_CAP_FRAME_THREADS |
1282 CODEC_CAP_SLICE_THREADS)) {
1283 case CODEC_CAP_FRAME_THREADS |
1284 CODEC_CAP_SLICE_THREADS: printf("frame and slice"); break;
1285 case CODEC_CAP_FRAME_THREADS: printf("frame"); break;
1286 case CODEC_CAP_SLICE_THREADS: printf("slice"); break;
1287 default: printf("no"); break;
1292 if (c->supported_framerates) {
1293 const AVRational *fps = c->supported_framerates;
1295 printf(" Supported framerates:");
1297 printf(" %d/%d", fps->num, fps->den);
1302 PRINT_CODEC_SUPPORTED(c, pix_fmts, enum AVPixelFormat, "pixel formats",
1303 AV_PIX_FMT_NONE, GET_PIX_FMT_NAME);
1304 PRINT_CODEC_SUPPORTED(c, supported_samplerates, int, "sample rates", 0,
1305 GET_SAMPLE_RATE_NAME);
1306 PRINT_CODEC_SUPPORTED(c, sample_fmts, enum AVSampleFormat, "sample formats",
1307 AV_SAMPLE_FMT_NONE, GET_SAMPLE_FMT_NAME);
1308 PRINT_CODEC_SUPPORTED(c, channel_layouts, uint64_t, "channel layouts",
1309 0, GET_CH_LAYOUT_DESC);
1311 if (c->priv_class) {
1312 show_help_children(c->priv_class,
1313 AV_OPT_FLAG_ENCODING_PARAM |
1314 AV_OPT_FLAG_DECODING_PARAM);
1318 static char get_media_type_char(enum AVMediaType type)
1321 case AVMEDIA_TYPE_VIDEO: return 'V';
1322 case AVMEDIA_TYPE_AUDIO: return 'A';
1323 case AVMEDIA_TYPE_DATA: return 'D';
1324 case AVMEDIA_TYPE_SUBTITLE: return 'S';
1325 case AVMEDIA_TYPE_ATTACHMENT:return 'T';
1326 default: return '?';
1330 static const AVCodec *next_codec_for_id(enum AVCodecID id, const AVCodec *prev,
1333 while ((prev = av_codec_next(prev))) {
1334 if (prev->id == id &&
1335 (encoder ? av_codec_is_encoder(prev) : av_codec_is_decoder(prev)))
1341 static int compare_codec_desc(const void *a, const void *b)
1343 const AVCodecDescriptor * const *da = a;
1344 const AVCodecDescriptor * const *db = b;
1346 return (*da)->type != (*db)->type ? (*da)->type - (*db)->type :
1347 strcmp((*da)->name, (*db)->name);
1350 static unsigned get_codecs_sorted(const AVCodecDescriptor ***rcodecs)
1352 const AVCodecDescriptor *desc = NULL;
1353 const AVCodecDescriptor **codecs;
1354 unsigned nb_codecs = 0, i = 0;
1356 while ((desc = avcodec_descriptor_next(desc)))
1358 if (!(codecs = av_calloc(nb_codecs, sizeof(*codecs)))) {
1359 av_log(NULL, AV_LOG_ERROR, "Out of memory\n");
1363 while ((desc = avcodec_descriptor_next(desc)))
1365 av_assert0(i == nb_codecs);
1366 qsort(codecs, nb_codecs, sizeof(*codecs), compare_codec_desc);
1371 static void print_codecs_for_id(enum AVCodecID id, int encoder)
1373 const AVCodec *codec = NULL;
1375 printf(" (%s: ", encoder ? "encoders" : "decoders");
1377 while ((codec = next_codec_for_id(id, codec, encoder)))
1378 printf("%s ", codec->name);
1383 int show_codecs(void *optctx, const char *opt, const char *arg)
1385 const AVCodecDescriptor **codecs;
1386 unsigned i, nb_codecs = get_codecs_sorted(&codecs);
1389 " D..... = Decoding supported\n"
1390 " .E.... = Encoding supported\n"
1391 " ..V... = Video codec\n"
1392 " ..A... = Audio codec\n"
1393 " ..S... = Subtitle codec\n"
1394 " ...I.. = Intra frame-only codec\n"
1395 " ....L. = Lossy compression\n"
1396 " .....S = Lossless compression\n"
1398 for (i = 0; i < nb_codecs; i++) {
1399 const AVCodecDescriptor *desc = codecs[i];
1400 const AVCodec *codec = NULL;
1403 printf(avcodec_find_decoder(desc->id) ? "D" : ".");
1404 printf(avcodec_find_encoder(desc->id) ? "E" : ".");
1406 printf("%c", get_media_type_char(desc->type));
1407 printf((desc->props & AV_CODEC_PROP_INTRA_ONLY) ? "I" : ".");
1408 printf((desc->props & AV_CODEC_PROP_LOSSY) ? "L" : ".");
1409 printf((desc->props & AV_CODEC_PROP_LOSSLESS) ? "S" : ".");
1411 printf(" %-20s %s", desc->name, desc->long_name ? desc->long_name : "");
1413 /* print decoders/encoders when there's more than one or their
1414 * names are different from codec name */
1415 while ((codec = next_codec_for_id(desc->id, codec, 0))) {
1416 if (strcmp(codec->name, desc->name)) {
1417 print_codecs_for_id(desc->id, 0);
1422 while ((codec = next_codec_for_id(desc->id, codec, 1))) {
1423 if (strcmp(codec->name, desc->name)) {
1424 print_codecs_for_id(desc->id, 1);
1435 static void print_codecs(int encoder)
1437 const AVCodecDescriptor **codecs;
1438 unsigned i, nb_codecs = get_codecs_sorted(&codecs);
1443 " S..... = Subtitle\n"
1444 " .F.... = Frame-level multithreading\n"
1445 " ..S... = Slice-level multithreading\n"
1446 " ...X.. = Codec is experimental\n"
1447 " ....B. = Supports draw_horiz_band\n"
1448 " .....D = Supports direct rendering method 1\n"
1450 encoder ? "Encoders" : "Decoders");
1451 for (i = 0; i < nb_codecs; i++) {
1452 const AVCodecDescriptor *desc = codecs[i];
1453 const AVCodec *codec = NULL;
1455 while ((codec = next_codec_for_id(desc->id, codec, encoder))) {
1456 printf(" %c", get_media_type_char(desc->type));
1457 printf((codec->capabilities & CODEC_CAP_FRAME_THREADS) ? "F" : ".");
1458 printf((codec->capabilities & CODEC_CAP_SLICE_THREADS) ? "S" : ".");
1459 printf((codec->capabilities & CODEC_CAP_EXPERIMENTAL) ? "X" : ".");
1460 printf((codec->capabilities & CODEC_CAP_DRAW_HORIZ_BAND)?"B" : ".");
1461 printf((codec->capabilities & CODEC_CAP_DR1) ? "D" : ".");
1463 printf(" %-20s %s", codec->name, codec->long_name ? codec->long_name : "");
1464 if (strcmp(codec->name, desc->name))
1465 printf(" (codec %s)", desc->name);
1473 int show_decoders(void *optctx, const char *opt, const char *arg)
1479 int show_encoders(void *optctx, const char *opt, const char *arg)
1485 int show_bsfs(void *optctx, const char *opt, const char *arg)
1487 AVBitStreamFilter *bsf = NULL;
1489 printf("Bitstream filters:\n");
1490 while ((bsf = av_bitstream_filter_next(bsf)))
1491 printf("%s\n", bsf->name);
1496 int show_protocols(void *optctx, const char *opt, const char *arg)
1498 void *opaque = NULL;
1501 printf("Supported file protocols:\n"
1503 while ((name = avio_enum_protocols(&opaque, 0)))
1504 printf("%s\n", name);
1505 printf("Output:\n");
1506 while ((name = avio_enum_protocols(&opaque, 1)))
1507 printf("%s\n", name);
1511 int show_filters(void *optctx, const char *opt, const char *arg)
1513 const AVFilter av_unused(*filter) = NULL;
1514 char descr[64], *descr_cur;
1516 const AVFilterPad *pad;
1519 " T.. = Timeline support\n"
1520 " .S. = Slice threading\n"
1521 " ..C = Commmand support\n"
1522 " A = Audio input/output\n"
1523 " V = Video input/output\n"
1524 " N = Dynamic number and/or type of input/output\n"
1525 " | = Source or sink filter\n");
1527 while ((filter = avfilter_next(filter))) {
1529 for (i = 0; i < 2; i++) {
1531 *(descr_cur++) = '-';
1532 *(descr_cur++) = '>';
1534 pad = i ? filter->outputs : filter->inputs;
1535 for (j = 0; pad && pad[j].name; j++) {
1536 if (descr_cur >= descr + sizeof(descr) - 4)
1538 *(descr_cur++) = get_media_type_char(pad[j].type);
1541 *(descr_cur++) = ((!i && (filter->flags & AVFILTER_FLAG_DYNAMIC_INPUTS)) ||
1542 ( i && (filter->flags & AVFILTER_FLAG_DYNAMIC_OUTPUTS))) ? 'N' : '|';
1545 printf(" %c%c%c %-16s %-10s %s\n",
1546 filter->flags & AVFILTER_FLAG_SUPPORT_TIMELINE ? 'T' : '.',
1547 filter->flags & AVFILTER_FLAG_SLICE_THREADS ? 'S' : '.',
1548 filter->process_command ? 'C' : '.',
1549 filter->name, descr, filter->description);
1555 int show_colors(void *optctx, const char *opt, const char *arg)
1561 printf("%-32s #RRGGBB\n", "name");
1563 for (i = 0; name = av_get_known_color_name(i, &rgb); i++)
1564 printf("%-32s #%02x%02x%02x\n", name, rgb[0], rgb[1], rgb[2]);
1569 int show_pix_fmts(void *optctx, const char *opt, const char *arg)
1571 const AVPixFmtDescriptor *pix_desc = NULL;
1573 printf("Pixel formats:\n"
1574 "I.... = Supported Input format for conversion\n"
1575 ".O... = Supported Output format for conversion\n"
1576 "..H.. = Hardware accelerated format\n"
1577 "...P. = Paletted format\n"
1578 "....B = Bitstream format\n"
1579 "FLAGS NAME NB_COMPONENTS BITS_PER_PIXEL\n"
1583 # define sws_isSupportedInput(x) 0
1584 # define sws_isSupportedOutput(x) 0
1587 while ((pix_desc = av_pix_fmt_desc_next(pix_desc))) {
1588 enum AVPixelFormat pix_fmt = av_pix_fmt_desc_get_id(pix_desc);
1589 printf("%c%c%c%c%c %-16s %d %2d\n",
1590 sws_isSupportedInput (pix_fmt) ? 'I' : '.',
1591 sws_isSupportedOutput(pix_fmt) ? 'O' : '.',
1592 pix_desc->flags & AV_PIX_FMT_FLAG_HWACCEL ? 'H' : '.',
1593 pix_desc->flags & AV_PIX_FMT_FLAG_PAL ? 'P' : '.',
1594 pix_desc->flags & AV_PIX_FMT_FLAG_BITSTREAM ? 'B' : '.',
1596 pix_desc->nb_components,
1597 av_get_bits_per_pixel(pix_desc));
1602 int show_layouts(void *optctx, const char *opt, const char *arg)
1606 const char *name, *descr;
1608 printf("Individual channels:\n"
1609 "NAME DESCRIPTION\n");
1610 for (i = 0; i < 63; i++) {
1611 name = av_get_channel_name((uint64_t)1 << i);
1614 descr = av_get_channel_description((uint64_t)1 << i);
1615 printf("%-12s%s\n", name, descr);
1617 printf("\nStandard channel layouts:\n"
1618 "NAME DECOMPOSITION\n");
1619 for (i = 0; !av_get_standard_channel_layout(i, &layout, &name); i++) {
1621 printf("%-12s", name);
1622 for (j = 1; j; j <<= 1)
1624 printf("%s%s", (layout & (j - 1)) ? "+" : "", av_get_channel_name(j));
1631 int show_sample_fmts(void *optctx, const char *opt, const char *arg)
1635 for (i = -1; i < AV_SAMPLE_FMT_NB; i++)
1636 printf("%s\n", av_get_sample_fmt_string(fmt_str, sizeof(fmt_str), i));
1640 static void show_help_codec(const char *name, int encoder)
1642 const AVCodecDescriptor *desc;
1643 const AVCodec *codec;
1646 av_log(NULL, AV_LOG_ERROR, "No codec name specified.\n");
1650 codec = encoder ? avcodec_find_encoder_by_name(name) :
1651 avcodec_find_decoder_by_name(name);
1655 else if ((desc = avcodec_descriptor_get_by_name(name))) {
1658 while ((codec = next_codec_for_id(desc->id, codec, encoder))) {
1664 av_log(NULL, AV_LOG_ERROR, "Codec '%s' is known to FFmpeg, "
1665 "but no %s for it are available. FFmpeg might need to be "
1666 "recompiled with additional external libraries.\n",
1667 name, encoder ? "encoders" : "decoders");
1670 av_log(NULL, AV_LOG_ERROR, "Codec '%s' is not recognized by FFmpeg.\n",
1675 static void show_help_demuxer(const char *name)
1677 const AVInputFormat *fmt = av_find_input_format(name);
1680 av_log(NULL, AV_LOG_ERROR, "Unknown format '%s'.\n", name);
1684 printf("Demuxer %s [%s]:\n", fmt->name, fmt->long_name);
1686 if (fmt->extensions)
1687 printf(" Common extensions: %s.\n", fmt->extensions);
1689 if (fmt->priv_class)
1690 show_help_children(fmt->priv_class, AV_OPT_FLAG_DECODING_PARAM);
1693 static void show_help_muxer(const char *name)
1695 const AVCodecDescriptor *desc;
1696 const AVOutputFormat *fmt = av_guess_format(name, NULL, NULL);
1699 av_log(NULL, AV_LOG_ERROR, "Unknown format '%s'.\n", name);
1703 printf("Muxer %s [%s]:\n", fmt->name, fmt->long_name);
1705 if (fmt->extensions)
1706 printf(" Common extensions: %s.\n", fmt->extensions);
1708 printf(" Mime type: %s.\n", fmt->mime_type);
1709 if (fmt->video_codec != AV_CODEC_ID_NONE &&
1710 (desc = avcodec_descriptor_get(fmt->video_codec))) {
1711 printf(" Default video codec: %s.\n", desc->name);
1713 if (fmt->audio_codec != AV_CODEC_ID_NONE &&
1714 (desc = avcodec_descriptor_get(fmt->audio_codec))) {
1715 printf(" Default audio codec: %s.\n", desc->name);
1717 if (fmt->subtitle_codec != AV_CODEC_ID_NONE &&
1718 (desc = avcodec_descriptor_get(fmt->subtitle_codec))) {
1719 printf(" Default subtitle codec: %s.\n", desc->name);
1722 if (fmt->priv_class)
1723 show_help_children(fmt->priv_class, AV_OPT_FLAG_ENCODING_PARAM);
1727 static void show_help_filter(const char *name)
1730 const AVFilter *f = avfilter_get_by_name(name);
1734 av_log(NULL, AV_LOG_ERROR, "No filter name specified.\n");
1737 av_log(NULL, AV_LOG_ERROR, "Unknown filter '%s'.\n", name);
1741 printf("Filter %s\n", f->name);
1743 printf(" %s\n", f->description);
1745 if (f->flags & AVFILTER_FLAG_SLICE_THREADS)
1746 printf(" slice threading supported\n");
1748 printf(" Inputs:\n");
1749 count = avfilter_pad_count(f->inputs);
1750 for (i = 0; i < count; i++) {
1751 printf(" #%d: %s (%s)\n", i, avfilter_pad_get_name(f->inputs, i),
1752 media_type_string(avfilter_pad_get_type(f->inputs, i)));
1754 if (f->flags & AVFILTER_FLAG_DYNAMIC_INPUTS)
1755 printf(" dynamic (depending on the options)\n");
1757 printf(" none (source filter)\n");
1759 printf(" Outputs:\n");
1760 count = avfilter_pad_count(f->outputs);
1761 for (i = 0; i < count; i++) {
1762 printf(" #%d: %s (%s)\n", i, avfilter_pad_get_name(f->outputs, i),
1763 media_type_string(avfilter_pad_get_type(f->outputs, i)));
1765 if (f->flags & AVFILTER_FLAG_DYNAMIC_OUTPUTS)
1766 printf(" dynamic (depending on the options)\n");
1768 printf(" none (sink filter)\n");
1771 show_help_children(f->priv_class, AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM |
1772 AV_OPT_FLAG_AUDIO_PARAM);
1773 if (f->flags & AVFILTER_FLAG_SUPPORT_TIMELINE)
1774 printf("This filter has support for timeline through the 'enable' option.\n");
1776 av_log(NULL, AV_LOG_ERROR, "Build without libavfilter; "
1777 "can not to satisfy request\n");
1782 int show_help(void *optctx, const char *opt, const char *arg)
1785 av_log_set_callback(log_callback_help);
1787 topic = av_strdup(arg ? arg : "");
1788 par = strchr(topic, '=');
1793 show_help_default(topic, par);
1794 } else if (!strcmp(topic, "decoder")) {
1795 show_help_codec(par, 0);
1796 } else if (!strcmp(topic, "encoder")) {
1797 show_help_codec(par, 1);
1798 } else if (!strcmp(topic, "demuxer")) {
1799 show_help_demuxer(par);
1800 } else if (!strcmp(topic, "muxer")) {
1801 show_help_muxer(par);
1803 } else if (!strcmp(topic, "filter")) {
1804 show_help_filter(par);
1807 show_help_default(topic, par);
1814 int read_yesno(void)
1817 int yesno = (av_toupper(c) == 'Y');
1819 while (c != '\n' && c != EOF)
1825 int cmdutils_read_file(const char *filename, char **bufptr, size_t *size)
1828 FILE *f = av_fopen_utf8(filename, "rb");
1831 av_log(NULL, AV_LOG_ERROR, "Cannot read file '%s': %s\n", filename,
1833 return AVERROR(errno);
1835 fseek(f, 0, SEEK_END);
1837 fseek(f, 0, SEEK_SET);
1838 if (*size == (size_t)-1) {
1839 av_log(NULL, AV_LOG_ERROR, "IO error: %s\n", strerror(errno));
1841 return AVERROR(errno);
1843 *bufptr = av_malloc(*size + 1);
1845 av_log(NULL, AV_LOG_ERROR, "Could not allocate file buffer\n");
1847 return AVERROR(ENOMEM);
1849 ret = fread(*bufptr, 1, *size, f);
1853 av_log(NULL, AV_LOG_ERROR, "Error while reading file '%s': %s\n",
1854 filename, strerror(errno));
1855 ret = AVERROR(errno);
1860 (*bufptr)[(*size)++] = '\0';
1867 FILE *get_preset_file(char *filename, size_t filename_size,
1868 const char *preset_name, int is_path,
1869 const char *codec_name)
1873 const char *base[3] = { getenv("FFMPEG_DATADIR"),
1878 av_strlcpy(filename, preset_name, filename_size);
1879 f = fopen(filename, "r");
1882 char datadir[MAX_PATH], *ls;
1885 if (GetModuleFileNameA(GetModuleHandleA(NULL), datadir, sizeof(datadir) - 1))
1887 for (ls = datadir; ls < datadir + strlen(datadir); ls++)
1888 if (*ls == '\\') *ls = '/';
1890 if (ls = strrchr(datadir, '/'))
1893 strncat(datadir, "/ffpresets", sizeof(datadir) - 1 - strlen(datadir));
1898 for (i = 0; i < 3 && !f; i++) {
1901 snprintf(filename, filename_size, "%s%s/%s.ffpreset", base[i],
1902 i != 1 ? "" : "/.ffmpeg", preset_name);
1903 f = fopen(filename, "r");
1904 if (!f && codec_name) {
1905 snprintf(filename, filename_size,
1906 "%s%s/%s-%s.ffpreset",
1907 base[i], i != 1 ? "" : "/.ffmpeg", codec_name,
1909 f = fopen(filename, "r");
1917 int check_stream_specifier(AVFormatContext *s, AVStream *st, const char *spec)
1919 int ret = avformat_match_stream_specifier(s, st, spec);
1921 av_log(s, AV_LOG_ERROR, "Invalid stream specifier: %s.\n", spec);
1925 AVDictionary *filter_codec_opts(AVDictionary *opts, enum AVCodecID codec_id,
1926 AVFormatContext *s, AVStream *st, AVCodec *codec)
1928 AVDictionary *ret = NULL;
1929 AVDictionaryEntry *t = NULL;
1930 int flags = s->oformat ? AV_OPT_FLAG_ENCODING_PARAM
1931 : AV_OPT_FLAG_DECODING_PARAM;
1933 const AVClass *cc = avcodec_get_class();
1936 codec = s->oformat ? avcodec_find_encoder(codec_id)
1937 : avcodec_find_decoder(codec_id);
1939 switch (st->codec->codec_type) {
1940 case AVMEDIA_TYPE_VIDEO:
1942 flags |= AV_OPT_FLAG_VIDEO_PARAM;
1944 case AVMEDIA_TYPE_AUDIO:
1946 flags |= AV_OPT_FLAG_AUDIO_PARAM;
1948 case AVMEDIA_TYPE_SUBTITLE:
1950 flags |= AV_OPT_FLAG_SUBTITLE_PARAM;
1954 while (t = av_dict_get(opts, "", t, AV_DICT_IGNORE_SUFFIX)) {
1955 char *p = strchr(t->key, ':');
1957 /* check stream specification in opt name */
1959 switch (check_stream_specifier(s, st, p + 1)) {
1960 case 1: *p = 0; break;
1962 default: return NULL;
1965 if (av_opt_find(&cc, t->key, NULL, flags, AV_OPT_SEARCH_FAKE_OBJ) ||
1966 (codec && codec->priv_class &&
1967 av_opt_find(&codec->priv_class, t->key, NULL, flags,
1968 AV_OPT_SEARCH_FAKE_OBJ)))
1969 av_dict_set(&ret, t->key, t->value, 0);
1970 else if (t->key[0] == prefix &&
1971 av_opt_find(&cc, t->key + 1, NULL, flags,
1972 AV_OPT_SEARCH_FAKE_OBJ))
1973 av_dict_set(&ret, t->key + 1, t->value, 0);
1981 AVDictionary **setup_find_stream_info_opts(AVFormatContext *s,
1982 AVDictionary *codec_opts)
1985 AVDictionary **opts;
1989 opts = av_mallocz(s->nb_streams * sizeof(*opts));
1991 av_log(NULL, AV_LOG_ERROR,
1992 "Could not alloc memory for stream options.\n");
1995 for (i = 0; i < s->nb_streams; i++)
1996 opts[i] = filter_codec_opts(codec_opts, s->streams[i]->codec->codec_id,
1997 s, s->streams[i], NULL);
2001 void *grow_array(void *array, int elem_size, int *size, int new_size)
2003 if (new_size >= INT_MAX / elem_size) {
2004 av_log(NULL, AV_LOG_ERROR, "Array too big.\n");
2007 if (*size < new_size) {
2008 uint8_t *tmp = av_realloc(array, new_size*elem_size);
2010 av_log(NULL, AV_LOG_ERROR, "Could not alloc buffer.\n");
2013 memset(tmp + *size*elem_size, 0, (new_size-*size) * elem_size);