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;
74 sws_opts = sws_getContext(16, 16, 0, 16, 16, 0, SWS_BICUBIC,
78 void uninit_opts(void)
81 sws_freeContext(sws_opts);
85 av_dict_free(&swr_opts);
86 av_dict_free(&format_opts);
87 av_dict_free(&codec_opts);
88 av_dict_free(&resample_opts);
91 void log_callback_help(void *ptr, int level, const char *fmt, va_list vl)
93 vfprintf(stdout, fmt, vl);
96 static void log_callback_report(void *ptr, int level, const char *fmt, va_list vl)
100 static int print_prefix = 1;
103 av_log_default_callback(ptr, level, fmt, vl);
104 av_log_format_line(ptr, level, fmt, vl2, line, sizeof(line), &print_prefix);
106 fputs(line, report_file);
110 static void (*program_exit)(int ret);
112 void register_exit(void (*cb)(int ret))
117 void exit_program(int ret)
125 double parse_number_or_die(const char *context, const char *numstr, int type,
126 double min, double max)
130 double d = av_strtod(numstr, &tail);
132 error = "Expected number for %s but found: %s\n";
133 else if (d < min || d > max)
134 error = "The value for %s was %s which is not within %f - %f\n";
135 else if (type == OPT_INT64 && (int64_t)d != d)
136 error = "Expected int64 for %s but found %s\n";
137 else if (type == OPT_INT && (int)d != d)
138 error = "Expected int for %s but found %s\n";
141 av_log(NULL, AV_LOG_FATAL, error, context, numstr, min, max);
146 int64_t parse_time_or_die(const char *context, const char *timestr,
150 if (av_parse_time(&us, timestr, is_duration) < 0) {
151 av_log(NULL, AV_LOG_FATAL, "Invalid %s specification for %s: %s\n",
152 is_duration ? "duration" : "date", context, timestr);
158 void show_help_options(const OptionDef *options, const char *msg, int req_flags,
159 int rej_flags, int alt_flags)
165 for (po = options; po->name != NULL; po++) {
168 if (((po->flags & req_flags) != req_flags) ||
169 (alt_flags && !(po->flags & alt_flags)) ||
170 (po->flags & rej_flags))
177 av_strlcpy(buf, po->name, sizeof(buf));
179 av_strlcat(buf, " ", sizeof(buf));
180 av_strlcat(buf, po->argname, sizeof(buf));
182 printf("-%-17s %s\n", buf, po->help);
187 void show_help_children(const AVClass *class, int flags)
189 const AVClass *child = NULL;
191 av_opt_show2(&class, NULL, flags, 0);
195 while (child = av_opt_child_class_next(class, child))
196 show_help_children(child, flags);
199 static const OptionDef *find_option(const OptionDef *po, const char *name)
201 const char *p = strchr(name, ':');
202 int len = p ? p - name : strlen(name);
204 while (po->name != NULL) {
205 if (!strncmp(name, po->name, len) && strlen(po->name) == len)
212 /* _WIN32 means using the windows libc - cygwin doesn't define that
213 * by default. HAVE_COMMANDLINETOARGVW is true on cygwin, while
214 * it doesn't provide the actual command line via GetCommandLineW(). */
215 #if HAVE_COMMANDLINETOARGVW && defined(_WIN32)
217 #include <shellapi.h>
218 /* Will be leaked on exit */
219 static char** win32_argv_utf8 = NULL;
220 static int win32_argc = 0;
223 * Prepare command line arguments for executable.
224 * For Windows - perform wide-char to UTF-8 conversion.
225 * Input arguments should be main() function arguments.
226 * @param argc_ptr Arguments number (including executable)
227 * @param argv_ptr Arguments list.
229 static void prepare_app_arguments(int *argc_ptr, char ***argv_ptr)
233 int i, buffsize = 0, offset = 0;
235 if (win32_argv_utf8) {
236 *argc_ptr = win32_argc;
237 *argv_ptr = win32_argv_utf8;
242 argv_w = CommandLineToArgvW(GetCommandLineW(), &win32_argc);
243 if (win32_argc <= 0 || !argv_w)
246 /* determine the UTF-8 buffer size (including NULL-termination symbols) */
247 for (i = 0; i < win32_argc; i++)
248 buffsize += WideCharToMultiByte(CP_UTF8, 0, argv_w[i], -1,
249 NULL, 0, NULL, NULL);
251 win32_argv_utf8 = av_mallocz(sizeof(char *) * (win32_argc + 1) + buffsize);
252 argstr_flat = (char *)win32_argv_utf8 + sizeof(char *) * (win32_argc + 1);
253 if (win32_argv_utf8 == NULL) {
258 for (i = 0; i < win32_argc; i++) {
259 win32_argv_utf8[i] = &argstr_flat[offset];
260 offset += WideCharToMultiByte(CP_UTF8, 0, argv_w[i], -1,
261 &argstr_flat[offset],
262 buffsize - offset, NULL, NULL);
264 win32_argv_utf8[i] = NULL;
267 *argc_ptr = win32_argc;
268 *argv_ptr = win32_argv_utf8;
271 static inline void prepare_app_arguments(int *argc_ptr, char ***argv_ptr)
275 #endif /* HAVE_COMMANDLINETOARGVW */
277 static int write_option(void *optctx, const OptionDef *po, const char *opt,
280 /* new-style options contain an offset into optctx, old-style address of
282 void *dst = po->flags & (OPT_OFFSET | OPT_SPEC) ?
283 (uint8_t *)optctx + po->u.off : po->u.dst_ptr;
286 if (po->flags & OPT_SPEC) {
287 SpecifierOpt **so = dst;
288 char *p = strchr(opt, ':');
290 dstcount = (int *)(so + 1);
291 *so = grow_array(*so, sizeof(**so), dstcount, *dstcount + 1);
292 (*so)[*dstcount - 1].specifier = av_strdup(p ? p + 1 : "");
293 dst = &(*so)[*dstcount - 1].u;
296 if (po->flags & OPT_STRING) {
298 str = av_strdup(arg);
301 } else if (po->flags & OPT_BOOL || po->flags & OPT_INT) {
302 *(int *)dst = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
303 } else if (po->flags & OPT_INT64) {
304 *(int64_t *)dst = parse_number_or_die(opt, arg, OPT_INT64, INT64_MIN, INT64_MAX);
305 } else if (po->flags & OPT_TIME) {
306 *(int64_t *)dst = parse_time_or_die(opt, arg, 1);
307 } else if (po->flags & OPT_FLOAT) {
308 *(float *)dst = parse_number_or_die(opt, arg, OPT_FLOAT, -INFINITY, INFINITY);
309 } else if (po->flags & OPT_DOUBLE) {
310 *(double *)dst = parse_number_or_die(opt, arg, OPT_DOUBLE, -INFINITY, INFINITY);
311 } else if (po->u.func_arg) {
312 int ret = po->u.func_arg(optctx, opt, arg);
314 av_log(NULL, AV_LOG_ERROR,
315 "Failed to set value '%s' for option '%s': %s\n",
316 arg, opt, av_err2str(ret));
320 if (po->flags & OPT_EXIT)
326 int parse_option(void *optctx, const char *opt, const char *arg,
327 const OptionDef *options)
332 po = find_option(options, opt);
333 if (!po->name && opt[0] == 'n' && opt[1] == 'o') {
334 /* handle 'no' bool option */
335 po = find_option(options, opt + 2);
336 if ((po->name && (po->flags & OPT_BOOL)))
338 } else if (po->flags & OPT_BOOL)
342 po = find_option(options, "default");
344 av_log(NULL, AV_LOG_ERROR, "Unrecognized option '%s'\n", opt);
345 return AVERROR(EINVAL);
347 if (po->flags & HAS_ARG && !arg) {
348 av_log(NULL, AV_LOG_ERROR, "Missing argument for option '%s'\n", opt);
349 return AVERROR(EINVAL);
352 ret = write_option(optctx, po, opt, arg);
356 return !!(po->flags & HAS_ARG);
359 void parse_options(void *optctx, int argc, char **argv, const OptionDef *options,
360 void (*parse_arg_function)(void *, const char*))
363 int optindex, handleoptions = 1, ret;
365 /* perform system-dependent conversions for arguments list */
366 prepare_app_arguments(&argc, &argv);
370 while (optindex < argc) {
371 opt = argv[optindex++];
373 if (handleoptions && opt[0] == '-' && opt[1] != '\0') {
374 if (opt[1] == '-' && opt[2] == '\0') {
380 if ((ret = parse_option(optctx, opt, argv[optindex], options)) < 0)
384 if (parse_arg_function)
385 parse_arg_function(optctx, opt);
390 int parse_optgroup(void *optctx, OptionGroup *g)
394 av_log(NULL, AV_LOG_DEBUG, "Parsing a group of options: %s %s.\n",
395 g->group_def->name, g->arg);
397 for (i = 0; i < g->nb_opts; i++) {
398 Option *o = &g->opts[i];
400 if (g->group_def->flags &&
401 !(g->group_def->flags & o->opt->flags)) {
402 av_log(NULL, AV_LOG_ERROR, "Option %s (%s) cannot be applied to "
403 "%s %s -- you are trying to apply an input option to an "
404 "output file or vice versa. Move this option before the "
405 "file it belongs to.\n", o->key, o->opt->help,
406 g->group_def->name, g->arg);
407 return AVERROR(EINVAL);
410 av_log(NULL, AV_LOG_DEBUG, "Applying option %s (%s) with argument %s.\n",
411 o->key, o->opt->help, o->val);
413 ret = write_option(optctx, o->opt, o->key, o->val);
418 av_log(NULL, AV_LOG_DEBUG, "Successfully parsed a group of options.\n");
423 int locate_option(int argc, char **argv, const OptionDef *options,
429 for (i = 1; i < argc; i++) {
430 const char *cur_opt = argv[i];
432 if (*cur_opt++ != '-')
435 po = find_option(options, cur_opt);
436 if (!po->name && cur_opt[0] == 'n' && cur_opt[1] == 'o')
437 po = find_option(options, cur_opt + 2);
439 if ((!po->name && !strcmp(cur_opt, optname)) ||
440 (po->name && !strcmp(optname, po->name)))
443 if (po->flags & HAS_ARG)
449 static void dump_argument(const char *a)
451 const unsigned char *p;
454 if (!((*p >= '+' && *p <= ':') || (*p >= '@' && *p <= 'Z') ||
455 *p == '_' || (*p >= 'a' && *p <= 'z')))
458 fputs(a, report_file);
461 fputc('"', report_file);
462 for (p = a; *p; p++) {
463 if (*p == '\\' || *p == '"' || *p == '$' || *p == '`')
464 fprintf(report_file, "\\%c", *p);
465 else if (*p < ' ' || *p > '~')
466 fprintf(report_file, "\\x%02x", *p);
468 fputc(*p, report_file);
470 fputc('"', report_file);
473 void parse_loglevel(int argc, char **argv, const OptionDef *options)
475 int idx = locate_option(argc, argv, options, "loglevel");
478 idx = locate_option(argc, argv, options, "v");
479 if (idx && argv[idx + 1])
480 opt_loglevel(NULL, "loglevel", argv[idx + 1]);
481 idx = locate_option(argc, argv, options, "report");
482 if ((env = getenv("FFREPORT")) || idx) {
486 fprintf(report_file, "Command line:\n");
487 for (i = 0; i < argc; i++) {
488 dump_argument(argv[i]);
489 fputc(i < argc - 1 ? ' ' : '\n', report_file);
496 static const AVOption *opt_find(void *obj, const char *name, const char *unit,
497 int opt_flags, int search_flags)
499 const AVOption *o = av_opt_find(obj, name, unit, opt_flags, search_flags);
505 #define FLAGS (o->type == AV_OPT_TYPE_FLAGS) ? AV_DICT_APPEND : 0
506 int opt_default(void *optctx, const char *opt, const char *arg)
510 char opt_stripped[128];
512 const AVClass *cc = avcodec_get_class(), *fc = avformat_get_class();
513 #if CONFIG_AVRESAMPLE
514 const AVClass *rc = avresample_get_class();
516 const AVClass *sc, *swr_class;
518 if (!strcmp(opt, "debug") || !strcmp(opt, "fdebug"))
519 av_log_set_level(AV_LOG_DEBUG);
521 if (!(p = strchr(opt, ':')))
522 p = opt + strlen(opt);
523 av_strlcpy(opt_stripped, opt, FFMIN(sizeof(opt_stripped), p - opt + 1));
525 if ((o = opt_find(&cc, opt_stripped, NULL, 0,
526 AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ)) ||
527 ((opt[0] == 'v' || opt[0] == 'a' || opt[0] == 's') &&
528 (o = opt_find(&cc, opt + 1, NULL, 0, AV_OPT_SEARCH_FAKE_OBJ)))) {
529 av_dict_set(&codec_opts, opt, arg, FLAGS);
532 if ((o = opt_find(&fc, opt, NULL, 0,
533 AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ))) {
534 av_dict_set(&format_opts, opt, arg, FLAGS);
536 av_log(NULL, AV_LOG_VERBOSE, "Routing option %s to both codec and muxer layer\n", opt);
540 sc = sws_get_class();
541 if (!consumed && opt_find(&sc, opt, NULL, 0,
542 AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ)) {
543 // XXX we only support sws_flags, not arbitrary sws options
544 int ret = av_opt_set(sws_opts, opt, arg, 0);
546 av_log(NULL, AV_LOG_ERROR, "Error setting option %s.\n", opt);
552 #if CONFIG_SWRESAMPLE
553 swr_class = swr_get_class();
554 if (!consumed && (o=opt_find(&swr_class, opt, NULL, 0,
555 AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ))) {
556 struct SwrContext *swr = swr_alloc();
557 int ret = av_opt_set(swr, opt, arg, 0);
560 av_log(NULL, AV_LOG_ERROR, "Error setting option %s.\n", opt);
563 av_dict_set(&swr_opts, opt, arg, FLAGS);
567 #if CONFIG_AVRESAMPLE
568 if ((o=opt_find(&rc, opt, NULL, 0,
569 AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ))) {
570 av_dict_set(&resample_opts, opt, arg, FLAGS);
577 return AVERROR_OPTION_NOT_FOUND;
581 * Check whether given option is a group separator.
583 * @return index of the group definition that matched or -1 if none
585 static int match_group_separator(const OptionGroupDef *groups, int nb_groups,
590 for (i = 0; i < nb_groups; i++) {
591 const OptionGroupDef *p = &groups[i];
592 if (p->sep && !strcmp(p->sep, opt))
600 * Finish parsing an option group.
602 * @param group_idx which group definition should this group belong to
603 * @param arg argument of the group delimiting option
605 static void finish_group(OptionParseContext *octx, int group_idx,
608 OptionGroupList *l = &octx->groups[group_idx];
611 GROW_ARRAY(l->groups, l->nb_groups);
612 g = &l->groups[l->nb_groups - 1];
614 *g = octx->cur_group;
616 g->group_def = l->group_def;
618 g->sws_opts = sws_opts;
620 g->swr_opts = swr_opts;
621 g->codec_opts = codec_opts;
622 g->format_opts = format_opts;
623 g->resample_opts = resample_opts;
627 resample_opts = NULL;
634 memset(&octx->cur_group, 0, sizeof(octx->cur_group));
638 * Add an option instance to currently parsed group.
640 static void add_opt(OptionParseContext *octx, const OptionDef *opt,
641 const char *key, const char *val)
643 int global = !(opt->flags & (OPT_PERFILE | OPT_SPEC | OPT_OFFSET));
644 OptionGroup *g = global ? &octx->global_opts : &octx->cur_group;
646 GROW_ARRAY(g->opts, g->nb_opts);
647 g->opts[g->nb_opts - 1].opt = opt;
648 g->opts[g->nb_opts - 1].key = key;
649 g->opts[g->nb_opts - 1].val = val;
652 static void init_parse_context(OptionParseContext *octx,
653 const OptionGroupDef *groups, int nb_groups)
655 static const OptionGroupDef global_group = { "global" };
658 memset(octx, 0, sizeof(*octx));
660 octx->nb_groups = nb_groups;
661 octx->groups = av_mallocz(sizeof(*octx->groups) * octx->nb_groups);
665 for (i = 0; i < octx->nb_groups; i++)
666 octx->groups[i].group_def = &groups[i];
668 octx->global_opts.group_def = &global_group;
669 octx->global_opts.arg = "";
674 void uninit_parse_context(OptionParseContext *octx)
678 for (i = 0; i < octx->nb_groups; i++) {
679 OptionGroupList *l = &octx->groups[i];
681 for (j = 0; j < l->nb_groups; j++) {
682 av_freep(&l->groups[j].opts);
683 av_dict_free(&l->groups[j].codec_opts);
684 av_dict_free(&l->groups[j].format_opts);
685 av_dict_free(&l->groups[j].resample_opts);
687 sws_freeContext(l->groups[j].sws_opts);
689 av_dict_free(&l->groups[j].swr_opts);
691 av_freep(&l->groups);
693 av_freep(&octx->groups);
695 av_freep(&octx->cur_group.opts);
696 av_freep(&octx->global_opts.opts);
701 int split_commandline(OptionParseContext *octx, int argc, char *argv[],
702 const OptionDef *options,
703 const OptionGroupDef *groups, int nb_groups)
708 /* perform system-dependent conversions for arguments list */
709 prepare_app_arguments(&argc, &argv);
711 init_parse_context(octx, groups, nb_groups);
712 av_log(NULL, AV_LOG_DEBUG, "Splitting the commandline.\n");
714 while (optindex < argc) {
715 const char *opt = argv[optindex++], *arg;
719 av_log(NULL, AV_LOG_DEBUG, "Reading option '%s' ...", opt);
721 if (opt[0] == '-' && opt[1] == '-' && !opt[2]) {
725 /* unnamed group separators, e.g. output filename */
726 if (opt[0] != '-' || !opt[1] || dashdash+1 == optindex) {
727 finish_group(octx, 0, opt);
728 av_log(NULL, AV_LOG_DEBUG, " matched as %s.\n", groups[0].name);
733 #define GET_ARG(arg) \
735 arg = argv[optindex++]; \
737 av_log(NULL, AV_LOG_ERROR, "Missing argument for option '%s'.\n", opt);\
738 return AVERROR(EINVAL); \
742 /* named group separators, e.g. -i */
743 if ((ret = match_group_separator(groups, nb_groups, opt)) >= 0) {
745 finish_group(octx, ret, arg);
746 av_log(NULL, AV_LOG_DEBUG, " matched as %s with argument '%s'.\n",
747 groups[ret].name, arg);
752 po = find_option(options, opt);
754 if (po->flags & OPT_EXIT) {
755 /* optional argument, e.g. -h */
756 arg = argv[optindex++];
757 } else if (po->flags & HAS_ARG) {
763 add_opt(octx, po, opt, arg);
764 av_log(NULL, AV_LOG_DEBUG, " matched as option '%s' (%s) with "
765 "argument '%s'.\n", po->name, po->help, arg);
770 if (argv[optindex]) {
771 ret = opt_default(NULL, opt, argv[optindex]);
773 av_log(NULL, AV_LOG_DEBUG, " matched as AVOption '%s' with "
774 "argument '%s'.\n", opt, argv[optindex]);
777 } else if (ret != AVERROR_OPTION_NOT_FOUND) {
778 av_log(NULL, AV_LOG_ERROR, "Error parsing option '%s' "
779 "with argument '%s'.\n", opt, argv[optindex]);
784 /* boolean -nofoo options */
785 if (opt[0] == 'n' && opt[1] == 'o' &&
786 (po = find_option(options, opt + 2)) &&
787 po->name && po->flags & OPT_BOOL) {
788 add_opt(octx, po, opt, "0");
789 av_log(NULL, AV_LOG_DEBUG, " matched as option '%s' (%s) with "
790 "argument 0.\n", po->name, po->help);
794 av_log(NULL, AV_LOG_ERROR, "Unrecognized option '%s'.\n", opt);
795 return AVERROR_OPTION_NOT_FOUND;
798 if (octx->cur_group.nb_opts || codec_opts || format_opts || resample_opts)
799 av_log(NULL, AV_LOG_WARNING, "Trailing options were found on the "
802 av_log(NULL, AV_LOG_DEBUG, "Finished splitting the commandline.\n");
807 int opt_cpuflags(void *optctx, const char *opt, const char *arg)
810 unsigned flags = av_get_cpu_flags();
812 if ((ret = av_parse_cpu_caps(&flags, arg)) < 0)
815 av_force_cpu_flags(flags);
819 int opt_loglevel(void *optctx, const char *opt, const char *arg)
821 const struct { const char *name; int level; } log_levels[] = {
822 { "quiet" , AV_LOG_QUIET },
823 { "panic" , AV_LOG_PANIC },
824 { "fatal" , AV_LOG_FATAL },
825 { "error" , AV_LOG_ERROR },
826 { "warning", AV_LOG_WARNING },
827 { "info" , AV_LOG_INFO },
828 { "verbose", AV_LOG_VERBOSE },
829 { "debug" , AV_LOG_DEBUG },
835 tail = strstr(arg, "repeat");
836 av_log_set_flags(tail ? 0 : AV_LOG_SKIP_REPEATED);
838 arg += 6 + (arg[6]=='+');
842 for (i = 0; i < FF_ARRAY_ELEMS(log_levels); i++) {
843 if (!strcmp(log_levels[i].name, arg)) {
844 av_log_set_level(log_levels[i].level);
849 level = strtol(arg, &tail, 10);
851 av_log(NULL, AV_LOG_FATAL, "Invalid loglevel \"%s\". "
852 "Possible levels are numbers or:\n", arg);
853 for (i = 0; i < FF_ARRAY_ELEMS(log_levels); i++)
854 av_log(NULL, AV_LOG_FATAL, "\"%s\"\n", log_levels[i].name);
857 av_log_set_level(level);
861 static void expand_filename_template(AVBPrint *bp, const char *template,
866 while ((c = *(template++))) {
868 if (!(c = *(template++)))
872 av_bprintf(bp, "%s", program_name);
875 av_bprintf(bp, "%04d%02d%02d-%02d%02d%02d",
876 tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
877 tm->tm_hour, tm->tm_min, tm->tm_sec);
880 av_bprint_chars(bp, c, 1);
884 av_bprint_chars(bp, c, 1);
889 static int init_report(const char *env)
891 char *filename_template = NULL;
898 if (report_file) /* already opened */
901 tm = localtime(&now);
903 while (env && *env) {
904 if ((ret = av_opt_get_key_value(&env, "=", ":", 0, &key, &val)) < 0) {
906 av_log(NULL, AV_LOG_ERROR,
907 "Failed to parse FFREPORT environment variable: %s\n",
914 if (!strcmp(key, "file")) {
915 av_free(filename_template);
916 filename_template = val;
919 av_log(NULL, AV_LOG_ERROR, "Unknown key '%s' in FFREPORT\n", key);
925 av_bprint_init(&filename, 0, 1);
926 expand_filename_template(&filename,
927 av_x_if_null(filename_template, "%p-%t.log"), tm);
928 av_free(filename_template);
929 if (!av_bprint_is_complete(&filename)) {
930 av_log(NULL, AV_LOG_ERROR, "Out of memory building report file name\n");
931 return AVERROR(ENOMEM);
934 report_file = fopen(filename.str, "w");
936 av_log(NULL, AV_LOG_ERROR, "Failed to open report \"%s\": %s\n",
937 filename.str, strerror(errno));
938 return AVERROR(errno);
940 av_log_set_callback(log_callback_report);
941 av_log(NULL, AV_LOG_INFO,
942 "%s started on %04d-%02d-%02d at %02d:%02d:%02d\n"
943 "Report written to \"%s\"\n",
945 tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
946 tm->tm_hour, tm->tm_min, tm->tm_sec,
948 av_bprint_finalize(&filename, NULL);
952 int opt_report(const char *opt)
954 return init_report(NULL);
957 int opt_max_alloc(void *optctx, const char *opt, const char *arg)
962 max = strtol(arg, &tail, 10);
964 av_log(NULL, AV_LOG_FATAL, "Invalid max_alloc \"%s\".\n", arg);
971 int opt_timelimit(void *optctx, const char *opt, const char *arg)
974 int lim = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
975 struct rlimit rl = { lim, lim + 1 };
976 if (setrlimit(RLIMIT_CPU, &rl))
979 av_log(NULL, AV_LOG_WARNING, "-%s not implemented on this OS\n", opt);
984 void print_error(const char *filename, int err)
987 const char *errbuf_ptr = errbuf;
989 if (av_strerror(err, errbuf, sizeof(errbuf)) < 0)
990 errbuf_ptr = strerror(AVUNERROR(err));
991 av_log(NULL, AV_LOG_ERROR, "%s: %s\n", filename, errbuf_ptr);
994 static int warned_cfg = 0;
997 #define SHOW_VERSION 2
998 #define SHOW_CONFIG 4
999 #define SHOW_COPYRIGHT 8
1001 #define PRINT_LIB_INFO(libname, LIBNAME, flags, level) \
1002 if (CONFIG_##LIBNAME) { \
1003 const char *indent = flags & INDENT? " " : ""; \
1004 if (flags & SHOW_VERSION) { \
1005 unsigned int version = libname##_version(); \
1006 av_log(NULL, level, \
1007 "%slib%-11s %2d.%3d.%3d / %2d.%3d.%3d\n", \
1009 LIB##LIBNAME##_VERSION_MAJOR, \
1010 LIB##LIBNAME##_VERSION_MINOR, \
1011 LIB##LIBNAME##_VERSION_MICRO, \
1012 version >> 16, version >> 8 & 0xff, version & 0xff); \
1014 if (flags & SHOW_CONFIG) { \
1015 const char *cfg = libname##_configuration(); \
1016 if (strcmp(FFMPEG_CONFIGURATION, cfg)) { \
1017 if (!warned_cfg) { \
1018 av_log(NULL, level, \
1019 "%sWARNING: library configuration mismatch\n", \
1023 av_log(NULL, level, "%s%-11s configuration: %s\n", \
1024 indent, #libname, cfg); \
1029 static void print_all_libs_info(int flags, int level)
1031 PRINT_LIB_INFO(avutil, AVUTIL, flags, level);
1032 PRINT_LIB_INFO(avcodec, AVCODEC, flags, level);
1033 PRINT_LIB_INFO(avformat, AVFORMAT, flags, level);
1034 PRINT_LIB_INFO(avdevice, AVDEVICE, flags, level);
1035 PRINT_LIB_INFO(avfilter, AVFILTER, flags, level);
1036 PRINT_LIB_INFO(avresample, AVRESAMPLE, flags, level);
1037 PRINT_LIB_INFO(swscale, SWSCALE, flags, level);
1038 PRINT_LIB_INFO(swresample,SWRESAMPLE, flags, level);
1039 PRINT_LIB_INFO(postproc, POSTPROC, flags, level);
1042 static void print_program_info(int flags, int level)
1044 const char *indent = flags & INDENT? " " : "";
1046 av_log(NULL, level, "%s version " FFMPEG_VERSION, program_name);
1047 if (flags & SHOW_COPYRIGHT)
1048 av_log(NULL, level, " Copyright (c) %d-%d the FFmpeg developers",
1049 program_birth_year, CONFIG_THIS_YEAR);
1050 av_log(NULL, level, "\n");
1051 av_log(NULL, level, "%sbuilt on %s %s with %s\n",
1052 indent, __DATE__, __TIME__, CC_IDENT);
1054 av_log(NULL, level, "%sconfiguration: " FFMPEG_CONFIGURATION "\n", indent);
1057 static void print_buildconf(int flags, int level)
1059 const char *indent = flags & INDENT ? " " : "";
1060 char str[] = { FFMPEG_CONFIGURATION };
1061 char *conflist, *remove_tilde, *splitconf;
1063 // Change all the ' --' strings to '~--' so that
1064 // they can be identified as tokens.
1065 while ((conflist = strstr(str, " --")) != NULL) {
1066 strncpy(conflist, "~--", 3);
1069 // Compensate for the weirdness this would cause
1070 // when passing 'pkg-config --static'.
1071 while ((remove_tilde = strstr(str, "pkg-config~")) != NULL) {
1072 strncpy(remove_tilde, "pkg-config ", 11);
1075 splitconf = strtok(str, "~");
1076 av_log(NULL, level, "\n%sconfiguration:\n", indent);
1077 while (splitconf != NULL) {
1078 av_log(NULL, level, "%s%s%s\n", indent, indent, splitconf);
1079 splitconf = strtok(NULL, "~");
1083 void show_banner(int argc, char **argv, const OptionDef *options)
1085 int idx = locate_option(argc, argv, options, "version");
1089 print_program_info (INDENT|SHOW_COPYRIGHT, AV_LOG_INFO);
1090 print_all_libs_info(INDENT|SHOW_CONFIG, AV_LOG_INFO);
1091 print_all_libs_info(INDENT|SHOW_VERSION, AV_LOG_INFO);
1094 int show_version(void *optctx, const char *opt, const char *arg)
1096 av_log_set_callback(log_callback_help);
1097 print_program_info (0 , AV_LOG_INFO);
1098 print_all_libs_info(SHOW_VERSION, AV_LOG_INFO);
1103 int show_buildconf(void *optctx, const char *opt, const char *arg)
1105 av_log_set_callback(log_callback_help);
1106 print_buildconf (INDENT|0, AV_LOG_INFO);
1111 int show_license(void *optctx, const char *opt, const char *arg)
1115 "This version of %s has nonfree parts compiled in.\n"
1116 "Therefore it is not legally redistributable.\n",
1120 "%s is free software; you can redistribute it and/or modify\n"
1121 "it under the terms of the GNU General Public License as published by\n"
1122 "the Free Software Foundation; either version 3 of the License, or\n"
1123 "(at your option) any later version.\n"
1125 "%s is distributed in the hope that it will be useful,\n"
1126 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
1127 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
1128 "GNU General Public License for more details.\n"
1130 "You should have received a copy of the GNU General Public License\n"
1131 "along with %s. If not, see <http://www.gnu.org/licenses/>.\n",
1132 program_name, program_name, program_name );
1135 "%s is free software; you can redistribute it and/or modify\n"
1136 "it under the terms of the GNU General Public License as published by\n"
1137 "the Free Software Foundation; either version 2 of the License, or\n"
1138 "(at your option) any later version.\n"
1140 "%s is distributed in the hope that it will be useful,\n"
1141 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
1142 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
1143 "GNU General Public License for more details.\n"
1145 "You should have received a copy of the GNU General Public License\n"
1146 "along with %s; if not, write to the Free Software\n"
1147 "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n",
1148 program_name, program_name, program_name );
1151 "%s is free software; you can redistribute it and/or modify\n"
1152 "it under the terms of the GNU Lesser General Public License as published by\n"
1153 "the Free Software Foundation; either version 3 of the License, or\n"
1154 "(at your option) any later version.\n"
1156 "%s is distributed in the hope that it will be useful,\n"
1157 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
1158 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
1159 "GNU Lesser General Public License for more details.\n"
1161 "You should have received a copy of the GNU Lesser General Public License\n"
1162 "along with %s. If not, see <http://www.gnu.org/licenses/>.\n",
1163 program_name, program_name, program_name );
1166 "%s is free software; you can redistribute it and/or\n"
1167 "modify it under the terms of the GNU Lesser General Public\n"
1168 "License as published by the Free Software Foundation; either\n"
1169 "version 2.1 of the License, or (at your option) any later version.\n"
1171 "%s is distributed in the hope that it will be useful,\n"
1172 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
1173 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU\n"
1174 "Lesser General Public License for more details.\n"
1176 "You should have received a copy of the GNU Lesser General Public\n"
1177 "License along with %s; if not, write to the Free Software\n"
1178 "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n",
1179 program_name, program_name, program_name );
1185 int show_formats(void *optctx, const char *opt, const char *arg)
1187 AVInputFormat *ifmt = NULL;
1188 AVOutputFormat *ofmt = NULL;
1189 const char *last_name;
1191 printf("File formats:\n"
1192 " D. = Demuxing supported\n"
1193 " .E = Muxing supported\n"
1199 const char *name = NULL;
1200 const char *long_name = NULL;
1202 while ((ofmt = av_oformat_next(ofmt))) {
1203 if ((name == NULL || strcmp(ofmt->name, name) < 0) &&
1204 strcmp(ofmt->name, last_name) > 0) {
1206 long_name = ofmt->long_name;
1210 while ((ifmt = av_iformat_next(ifmt))) {
1211 if ((name == NULL || strcmp(ifmt->name, name) < 0) &&
1212 strcmp(ifmt->name, last_name) > 0) {
1214 long_name = ifmt->long_name;
1217 if (name && strcmp(ifmt->name, name) == 0)
1224 printf(" %s%s %-15s %s\n",
1228 long_name ? long_name:" ");
1233 #define PRINT_CODEC_SUPPORTED(codec, field, type, list_name, term, get_name) \
1234 if (codec->field) { \
1235 const type *p = codec->field; \
1237 printf(" Supported " list_name ":"); \
1238 while (*p != term) { \
1240 printf(" %s", name); \
1246 static void print_codec(const AVCodec *c)
1248 int encoder = av_codec_is_encoder(c);
1250 printf("%s %s [%s]:\n", encoder ? "Encoder" : "Decoder", c->name,
1251 c->long_name ? c->long_name : "");
1253 if (c->type == AVMEDIA_TYPE_VIDEO ||
1254 c->type == AVMEDIA_TYPE_AUDIO) {
1255 printf(" Threading capabilities: ");
1256 switch (c->capabilities & (CODEC_CAP_FRAME_THREADS |
1257 CODEC_CAP_SLICE_THREADS)) {
1258 case CODEC_CAP_FRAME_THREADS |
1259 CODEC_CAP_SLICE_THREADS: printf("frame and slice"); break;
1260 case CODEC_CAP_FRAME_THREADS: printf("frame"); break;
1261 case CODEC_CAP_SLICE_THREADS: printf("slice"); break;
1262 default: printf("no"); break;
1267 if (c->supported_framerates) {
1268 const AVRational *fps = c->supported_framerates;
1270 printf(" Supported framerates:");
1272 printf(" %d/%d", fps->num, fps->den);
1277 PRINT_CODEC_SUPPORTED(c, pix_fmts, enum AVPixelFormat, "pixel formats",
1278 AV_PIX_FMT_NONE, GET_PIX_FMT_NAME);
1279 PRINT_CODEC_SUPPORTED(c, supported_samplerates, int, "sample rates", 0,
1280 GET_SAMPLE_RATE_NAME);
1281 PRINT_CODEC_SUPPORTED(c, sample_fmts, enum AVSampleFormat, "sample formats",
1282 AV_SAMPLE_FMT_NONE, GET_SAMPLE_FMT_NAME);
1283 PRINT_CODEC_SUPPORTED(c, channel_layouts, uint64_t, "channel layouts",
1284 0, GET_CH_LAYOUT_DESC);
1286 if (c->priv_class) {
1287 show_help_children(c->priv_class,
1288 AV_OPT_FLAG_ENCODING_PARAM |
1289 AV_OPT_FLAG_DECODING_PARAM);
1293 static char get_media_type_char(enum AVMediaType type)
1296 case AVMEDIA_TYPE_VIDEO: return 'V';
1297 case AVMEDIA_TYPE_AUDIO: return 'A';
1298 case AVMEDIA_TYPE_DATA: return 'D';
1299 case AVMEDIA_TYPE_SUBTITLE: return 'S';
1300 case AVMEDIA_TYPE_ATTACHMENT:return 'T';
1301 default: return '?';
1305 static const AVCodec *next_codec_for_id(enum AVCodecID id, const AVCodec *prev,
1308 while ((prev = av_codec_next(prev))) {
1309 if (prev->id == id &&
1310 (encoder ? av_codec_is_encoder(prev) : av_codec_is_decoder(prev)))
1316 static int compare_codec_desc(const void *a, const void *b)
1318 const AVCodecDescriptor * const *da = a;
1319 const AVCodecDescriptor * const *db = b;
1321 return (*da)->type != (*db)->type ? (*da)->type - (*db)->type :
1322 strcmp((*da)->name, (*db)->name);
1325 static unsigned get_codecs_sorted(const AVCodecDescriptor ***rcodecs)
1327 const AVCodecDescriptor *desc = NULL;
1328 const AVCodecDescriptor **codecs;
1329 unsigned nb_codecs = 0, i = 0;
1331 while ((desc = avcodec_descriptor_next(desc)))
1333 if (!(codecs = av_calloc(nb_codecs, sizeof(*codecs)))) {
1334 av_log(NULL, AV_LOG_ERROR, "Out of memory\n");
1338 while ((desc = avcodec_descriptor_next(desc)))
1340 av_assert0(i == nb_codecs);
1341 qsort(codecs, nb_codecs, sizeof(*codecs), compare_codec_desc);
1346 static void print_codecs_for_id(enum AVCodecID id, int encoder)
1348 const AVCodec *codec = NULL;
1350 printf(" (%s: ", encoder ? "encoders" : "decoders");
1352 while ((codec = next_codec_for_id(id, codec, encoder)))
1353 printf("%s ", codec->name);
1358 int show_codecs(void *optctx, const char *opt, const char *arg)
1360 const AVCodecDescriptor **codecs;
1361 unsigned i, nb_codecs = get_codecs_sorted(&codecs);
1364 " D..... = Decoding supported\n"
1365 " .E.... = Encoding supported\n"
1366 " ..V... = Video codec\n"
1367 " ..A... = Audio codec\n"
1368 " ..S... = Subtitle codec\n"
1369 " ...I.. = Intra frame-only codec\n"
1370 " ....L. = Lossy compression\n"
1371 " .....S = Lossless compression\n"
1373 for (i = 0; i < nb_codecs; i++) {
1374 const AVCodecDescriptor *desc = codecs[i];
1375 const AVCodec *codec = NULL;
1378 printf(avcodec_find_decoder(desc->id) ? "D" : ".");
1379 printf(avcodec_find_encoder(desc->id) ? "E" : ".");
1381 printf("%c", get_media_type_char(desc->type));
1382 printf((desc->props & AV_CODEC_PROP_INTRA_ONLY) ? "I" : ".");
1383 printf((desc->props & AV_CODEC_PROP_LOSSY) ? "L" : ".");
1384 printf((desc->props & AV_CODEC_PROP_LOSSLESS) ? "S" : ".");
1386 printf(" %-20s %s", desc->name, desc->long_name ? desc->long_name : "");
1388 /* print decoders/encoders when there's more than one or their
1389 * names are different from codec name */
1390 while ((codec = next_codec_for_id(desc->id, codec, 0))) {
1391 if (strcmp(codec->name, desc->name)) {
1392 print_codecs_for_id(desc->id, 0);
1397 while ((codec = next_codec_for_id(desc->id, codec, 1))) {
1398 if (strcmp(codec->name, desc->name)) {
1399 print_codecs_for_id(desc->id, 1);
1410 static void print_codecs(int encoder)
1412 const AVCodecDescriptor **codecs;
1413 unsigned i, nb_codecs = get_codecs_sorted(&codecs);
1418 " S..... = Subtitle\n"
1419 " .F.... = Frame-level multithreading\n"
1420 " ..S... = Slice-level multithreading\n"
1421 " ...X.. = Codec is experimental\n"
1422 " ....B. = Supports draw_horiz_band\n"
1423 " .....D = Supports direct rendering method 1\n"
1425 encoder ? "Encoders" : "Decoders");
1426 for (i = 0; i < nb_codecs; i++) {
1427 const AVCodecDescriptor *desc = codecs[i];
1428 const AVCodec *codec = NULL;
1430 while ((codec = next_codec_for_id(desc->id, codec, encoder))) {
1431 printf(" %c", get_media_type_char(desc->type));
1432 printf((codec->capabilities & CODEC_CAP_FRAME_THREADS) ? "F" : ".");
1433 printf((codec->capabilities & CODEC_CAP_SLICE_THREADS) ? "S" : ".");
1434 printf((codec->capabilities & CODEC_CAP_EXPERIMENTAL) ? "X" : ".");
1435 printf((codec->capabilities & CODEC_CAP_DRAW_HORIZ_BAND)?"B" : ".");
1436 printf((codec->capabilities & CODEC_CAP_DR1) ? "D" : ".");
1438 printf(" %-20s %s", codec->name, codec->long_name ? codec->long_name : "");
1439 if (strcmp(codec->name, desc->name))
1440 printf(" (codec %s)", desc->name);
1448 int show_decoders(void *optctx, const char *opt, const char *arg)
1454 int show_encoders(void *optctx, const char *opt, const char *arg)
1460 int show_bsfs(void *optctx, const char *opt, const char *arg)
1462 AVBitStreamFilter *bsf = NULL;
1464 printf("Bitstream filters:\n");
1465 while ((bsf = av_bitstream_filter_next(bsf)))
1466 printf("%s\n", bsf->name);
1471 int show_protocols(void *optctx, const char *opt, const char *arg)
1473 void *opaque = NULL;
1476 printf("Supported file protocols:\n"
1478 while ((name = avio_enum_protocols(&opaque, 0)))
1479 printf("%s\n", name);
1480 printf("Output:\n");
1481 while ((name = avio_enum_protocols(&opaque, 1)))
1482 printf("%s\n", name);
1486 int show_filters(void *optctx, const char *opt, const char *arg)
1488 const AVFilter av_unused(*filter) = NULL;
1489 char descr[64], *descr_cur;
1491 const AVFilterPad *pad;
1494 " T.. = Timeline support\n"
1495 " .S. = Slice threading\n"
1496 " ..C = Commmand support\n"
1497 " A = Audio input/output\n"
1498 " V = Video input/output\n"
1499 " N = Dynamic number and/or type of input/output\n"
1500 " | = Source or sink filter\n");
1502 while ((filter = avfilter_next(filter))) {
1504 for (i = 0; i < 2; i++) {
1506 *(descr_cur++) = '-';
1507 *(descr_cur++) = '>';
1509 pad = i ? filter->outputs : filter->inputs;
1510 for (j = 0; pad && pad[j].name; j++) {
1511 if (descr_cur >= descr + sizeof(descr) - 4)
1513 *(descr_cur++) = get_media_type_char(pad[j].type);
1516 *(descr_cur++) = ((!i && (filter->flags & AVFILTER_FLAG_DYNAMIC_INPUTS)) ||
1517 ( i && (filter->flags & AVFILTER_FLAG_DYNAMIC_OUTPUTS))) ? 'N' : '|';
1520 printf(" %c%c%c %-16s %-10s %s\n",
1521 filter->flags & AVFILTER_FLAG_SUPPORT_TIMELINE ? 'T' : '.',
1522 filter->flags & AVFILTER_FLAG_SLICE_THREADS ? 'S' : '.',
1523 filter->process_command ? 'C' : '.',
1524 filter->name, descr, filter->description);
1530 int show_colors(void *optctx, const char *opt, const char *arg)
1536 printf("%-32s #RRGGBB\n", "name");
1538 for (i = 0; name = av_get_known_color_name(i, &rgb); i++)
1539 printf("%-32s #%02x%02x%02x\n", name, rgb[0], rgb[1], rgb[2]);
1544 int show_pix_fmts(void *optctx, const char *opt, const char *arg)
1546 const AVPixFmtDescriptor *pix_desc = NULL;
1548 printf("Pixel formats:\n"
1549 "I.... = Supported Input format for conversion\n"
1550 ".O... = Supported Output format for conversion\n"
1551 "..H.. = Hardware accelerated format\n"
1552 "...P. = Paletted format\n"
1553 "....B = Bitstream format\n"
1554 "FLAGS NAME NB_COMPONENTS BITS_PER_PIXEL\n"
1558 # define sws_isSupportedInput(x) 0
1559 # define sws_isSupportedOutput(x) 0
1562 while ((pix_desc = av_pix_fmt_desc_next(pix_desc))) {
1563 enum AVPixelFormat pix_fmt = av_pix_fmt_desc_get_id(pix_desc);
1564 printf("%c%c%c%c%c %-16s %d %2d\n",
1565 sws_isSupportedInput (pix_fmt) ? 'I' : '.',
1566 sws_isSupportedOutput(pix_fmt) ? 'O' : '.',
1567 pix_desc->flags & AV_PIX_FMT_FLAG_HWACCEL ? 'H' : '.',
1568 pix_desc->flags & AV_PIX_FMT_FLAG_PAL ? 'P' : '.',
1569 pix_desc->flags & AV_PIX_FMT_FLAG_BITSTREAM ? 'B' : '.',
1571 pix_desc->nb_components,
1572 av_get_bits_per_pixel(pix_desc));
1577 int show_layouts(void *optctx, const char *opt, const char *arg)
1581 const char *name, *descr;
1583 printf("Individual channels:\n"
1584 "NAME DESCRIPTION\n");
1585 for (i = 0; i < 63; i++) {
1586 name = av_get_channel_name((uint64_t)1 << i);
1589 descr = av_get_channel_description((uint64_t)1 << i);
1590 printf("%-12s%s\n", name, descr);
1592 printf("\nStandard channel layouts:\n"
1593 "NAME DECOMPOSITION\n");
1594 for (i = 0; !av_get_standard_channel_layout(i, &layout, &name); i++) {
1596 printf("%-12s", name);
1597 for (j = 1; j; j <<= 1)
1599 printf("%s%s", (layout & (j - 1)) ? "+" : "", av_get_channel_name(j));
1606 int show_sample_fmts(void *optctx, const char *opt, const char *arg)
1610 for (i = -1; i < AV_SAMPLE_FMT_NB; i++)
1611 printf("%s\n", av_get_sample_fmt_string(fmt_str, sizeof(fmt_str), i));
1615 static void show_help_codec(const char *name, int encoder)
1617 const AVCodecDescriptor *desc;
1618 const AVCodec *codec;
1621 av_log(NULL, AV_LOG_ERROR, "No codec name specified.\n");
1625 codec = encoder ? avcodec_find_encoder_by_name(name) :
1626 avcodec_find_decoder_by_name(name);
1630 else if ((desc = avcodec_descriptor_get_by_name(name))) {
1633 while ((codec = next_codec_for_id(desc->id, codec, encoder))) {
1639 av_log(NULL, AV_LOG_ERROR, "Codec '%s' is known to FFmpeg, "
1640 "but no %s for it are available. FFmpeg might need to be "
1641 "recompiled with additional external libraries.\n",
1642 name, encoder ? "encoders" : "decoders");
1645 av_log(NULL, AV_LOG_ERROR, "Codec '%s' is not recognized by FFmpeg.\n",
1650 static void show_help_demuxer(const char *name)
1652 const AVInputFormat *fmt = av_find_input_format(name);
1655 av_log(NULL, AV_LOG_ERROR, "Unknown format '%s'.\n", name);
1659 printf("Demuxer %s [%s]:\n", fmt->name, fmt->long_name);
1661 if (fmt->extensions)
1662 printf(" Common extensions: %s.\n", fmt->extensions);
1664 if (fmt->priv_class)
1665 show_help_children(fmt->priv_class, AV_OPT_FLAG_DECODING_PARAM);
1668 static void show_help_muxer(const char *name)
1670 const AVCodecDescriptor *desc;
1671 const AVOutputFormat *fmt = av_guess_format(name, NULL, NULL);
1674 av_log(NULL, AV_LOG_ERROR, "Unknown format '%s'.\n", name);
1678 printf("Muxer %s [%s]:\n", fmt->name, fmt->long_name);
1680 if (fmt->extensions)
1681 printf(" Common extensions: %s.\n", fmt->extensions);
1683 printf(" Mime type: %s.\n", fmt->mime_type);
1684 if (fmt->video_codec != AV_CODEC_ID_NONE &&
1685 (desc = avcodec_descriptor_get(fmt->video_codec))) {
1686 printf(" Default video codec: %s.\n", desc->name);
1688 if (fmt->audio_codec != AV_CODEC_ID_NONE &&
1689 (desc = avcodec_descriptor_get(fmt->audio_codec))) {
1690 printf(" Default audio codec: %s.\n", desc->name);
1692 if (fmt->subtitle_codec != AV_CODEC_ID_NONE &&
1693 (desc = avcodec_descriptor_get(fmt->subtitle_codec))) {
1694 printf(" Default subtitle codec: %s.\n", desc->name);
1697 if (fmt->priv_class)
1698 show_help_children(fmt->priv_class, AV_OPT_FLAG_ENCODING_PARAM);
1702 static void show_help_filter(const char *name)
1705 const AVFilter *f = avfilter_get_by_name(name);
1709 av_log(NULL, AV_LOG_ERROR, "No filter name specified.\n");
1712 av_log(NULL, AV_LOG_ERROR, "Unknown filter '%s'.\n", name);
1716 printf("Filter %s\n", f->name);
1718 printf(" %s\n", f->description);
1720 if (f->flags & AVFILTER_FLAG_SLICE_THREADS)
1721 printf(" slice threading supported\n");
1723 printf(" Inputs:\n");
1724 count = avfilter_pad_count(f->inputs);
1725 for (i = 0; i < count; i++) {
1726 printf(" #%d: %s (%s)\n", i, avfilter_pad_get_name(f->inputs, i),
1727 media_type_string(avfilter_pad_get_type(f->inputs, i)));
1729 if (f->flags & AVFILTER_FLAG_DYNAMIC_INPUTS)
1730 printf(" dynamic (depending on the options)\n");
1732 printf(" none (source filter)\n");
1734 printf(" Outputs:\n");
1735 count = avfilter_pad_count(f->outputs);
1736 for (i = 0; i < count; i++) {
1737 printf(" #%d: %s (%s)\n", i, avfilter_pad_get_name(f->outputs, i),
1738 media_type_string(avfilter_pad_get_type(f->outputs, i)));
1740 if (f->flags & AVFILTER_FLAG_DYNAMIC_OUTPUTS)
1741 printf(" dynamic (depending on the options)\n");
1743 printf(" none (sink filter)\n");
1746 show_help_children(f->priv_class, AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM |
1747 AV_OPT_FLAG_AUDIO_PARAM);
1748 if (f->flags & AVFILTER_FLAG_SUPPORT_TIMELINE)
1749 printf("This filter has support for timeline through the 'enable' option.\n");
1751 av_log(NULL, AV_LOG_ERROR, "Build without libavfilter; "
1752 "can not to satisfy request\n");
1757 int show_help(void *optctx, const char *opt, const char *arg)
1760 av_log_set_callback(log_callback_help);
1762 topic = av_strdup(arg ? arg : "");
1763 par = strchr(topic, '=');
1768 show_help_default(topic, par);
1769 } else if (!strcmp(topic, "decoder")) {
1770 show_help_codec(par, 0);
1771 } else if (!strcmp(topic, "encoder")) {
1772 show_help_codec(par, 1);
1773 } else if (!strcmp(topic, "demuxer")) {
1774 show_help_demuxer(par);
1775 } else if (!strcmp(topic, "muxer")) {
1776 show_help_muxer(par);
1778 } else if (!strcmp(topic, "filter")) {
1779 show_help_filter(par);
1782 show_help_default(topic, par);
1789 int read_yesno(void)
1792 int yesno = (av_toupper(c) == 'Y');
1794 while (c != '\n' && c != EOF)
1800 int cmdutils_read_file(const char *filename, char **bufptr, size_t *size)
1803 FILE *f = av_fopen_utf8(filename, "rb");
1806 av_log(NULL, AV_LOG_ERROR, "Cannot read file '%s': %s\n", filename,
1808 return AVERROR(errno);
1810 fseek(f, 0, SEEK_END);
1812 fseek(f, 0, SEEK_SET);
1813 if (*size == (size_t)-1) {
1814 av_log(NULL, AV_LOG_ERROR, "IO error: %s\n", strerror(errno));
1816 return AVERROR(errno);
1818 *bufptr = av_malloc(*size + 1);
1820 av_log(NULL, AV_LOG_ERROR, "Could not allocate file buffer\n");
1822 return AVERROR(ENOMEM);
1824 ret = fread(*bufptr, 1, *size, f);
1828 av_log(NULL, AV_LOG_ERROR, "Error while reading file '%s': %s\n",
1829 filename, strerror(errno));
1830 ret = AVERROR(errno);
1835 (*bufptr)[(*size)++] = '\0';
1842 FILE *get_preset_file(char *filename, size_t filename_size,
1843 const char *preset_name, int is_path,
1844 const char *codec_name)
1848 const char *base[3] = { getenv("FFMPEG_DATADIR"),
1853 av_strlcpy(filename, preset_name, filename_size);
1854 f = fopen(filename, "r");
1857 char datadir[MAX_PATH], *ls;
1860 if (GetModuleFileNameA(GetModuleHandleA(NULL), datadir, sizeof(datadir) - 1))
1862 for (ls = datadir; ls < datadir + strlen(datadir); ls++)
1863 if (*ls == '\\') *ls = '/';
1865 if (ls = strrchr(datadir, '/'))
1868 strncat(datadir, "/ffpresets", sizeof(datadir) - 1 - strlen(datadir));
1873 for (i = 0; i < 3 && !f; i++) {
1876 snprintf(filename, filename_size, "%s%s/%s.ffpreset", base[i],
1877 i != 1 ? "" : "/.ffmpeg", preset_name);
1878 f = fopen(filename, "r");
1879 if (!f && codec_name) {
1880 snprintf(filename, filename_size,
1881 "%s%s/%s-%s.ffpreset",
1882 base[i], i != 1 ? "" : "/.ffmpeg", codec_name,
1884 f = fopen(filename, "r");
1892 int check_stream_specifier(AVFormatContext *s, AVStream *st, const char *spec)
1894 int ret = avformat_match_stream_specifier(s, st, spec);
1896 av_log(s, AV_LOG_ERROR, "Invalid stream specifier: %s.\n", spec);
1900 AVDictionary *filter_codec_opts(AVDictionary *opts, enum AVCodecID codec_id,
1901 AVFormatContext *s, AVStream *st, AVCodec *codec)
1903 AVDictionary *ret = NULL;
1904 AVDictionaryEntry *t = NULL;
1905 int flags = s->oformat ? AV_OPT_FLAG_ENCODING_PARAM
1906 : AV_OPT_FLAG_DECODING_PARAM;
1908 const AVClass *cc = avcodec_get_class();
1911 codec = s->oformat ? avcodec_find_encoder(codec_id)
1912 : avcodec_find_decoder(codec_id);
1914 switch (st->codec->codec_type) {
1915 case AVMEDIA_TYPE_VIDEO:
1917 flags |= AV_OPT_FLAG_VIDEO_PARAM;
1919 case AVMEDIA_TYPE_AUDIO:
1921 flags |= AV_OPT_FLAG_AUDIO_PARAM;
1923 case AVMEDIA_TYPE_SUBTITLE:
1925 flags |= AV_OPT_FLAG_SUBTITLE_PARAM;
1929 while (t = av_dict_get(opts, "", t, AV_DICT_IGNORE_SUFFIX)) {
1930 char *p = strchr(t->key, ':');
1932 /* check stream specification in opt name */
1934 switch (check_stream_specifier(s, st, p + 1)) {
1935 case 1: *p = 0; break;
1937 default: return NULL;
1940 if (av_opt_find(&cc, t->key, NULL, flags, AV_OPT_SEARCH_FAKE_OBJ) ||
1941 (codec && codec->priv_class &&
1942 av_opt_find(&codec->priv_class, t->key, NULL, flags,
1943 AV_OPT_SEARCH_FAKE_OBJ)))
1944 av_dict_set(&ret, t->key, t->value, 0);
1945 else if (t->key[0] == prefix &&
1946 av_opt_find(&cc, t->key + 1, NULL, flags,
1947 AV_OPT_SEARCH_FAKE_OBJ))
1948 av_dict_set(&ret, t->key + 1, t->value, 0);
1956 AVDictionary **setup_find_stream_info_opts(AVFormatContext *s,
1957 AVDictionary *codec_opts)
1960 AVDictionary **opts;
1964 opts = av_mallocz(s->nb_streams * sizeof(*opts));
1966 av_log(NULL, AV_LOG_ERROR,
1967 "Could not alloc memory for stream options.\n");
1970 for (i = 0; i < s->nb_streams; i++)
1971 opts[i] = filter_codec_opts(codec_opts, s->streams[i]->codec->codec_id,
1972 s, s->streams[i], NULL);
1976 void *grow_array(void *array, int elem_size, int *size, int new_size)
1978 if (new_size >= INT_MAX / elem_size) {
1979 av_log(NULL, AV_LOG_ERROR, "Array too big.\n");
1982 if (*size < new_size) {
1983 uint8_t *tmp = av_realloc(array, new_size*elem_size);
1985 av_log(NULL, AV_LOG_ERROR, "Could not alloc buffer.\n");
1988 memset(tmp + *size*elem_size, 0, (new_size-*size) * elem_size);