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 "libavformat/avformat.h"
33 #include "libavfilter/avfilter.h"
34 #include "libavdevice/avdevice.h"
35 #include "libswscale/swscale.h"
36 #include "libpostproc/postprocess.h"
37 #include "libavutil/avstring.h"
38 #include "libavutil/parseutils.h"
39 #include "libavutil/pixdesc.h"
40 #include "libavutil/eval.h"
41 #include "libavutil/dict.h"
42 #include "libavutil/opt.h"
46 #include "libavformat/network.h"
48 #if HAVE_SYS_RESOURCE_H
49 #include <sys/resource.h>
52 struct SwsContext *sws_opts;
53 AVDictionary *format_opts, *codec_opts;
55 static const int this_year = 2011;
60 sws_opts = sws_getContext(16, 16, 0, 16, 16, 0, SWS_BICUBIC, NULL, NULL, NULL);
64 void uninit_opts(void)
67 sws_freeContext(sws_opts);
70 av_dict_free(&format_opts);
71 av_dict_free(&codec_opts);
74 void log_callback_help(void* ptr, int level, const char* fmt, va_list vl)
76 vfprintf(stdout, fmt, vl);
79 double parse_number_or_die(const char *context, const char *numstr, int type, double min, double max)
83 double d = av_strtod(numstr, &tail);
85 error= "Expected number for %s but found: %s\n";
86 else if (d < min || d > max)
87 error= "The value for %s was %s which is not within %f - %f\n";
88 else if(type == OPT_INT64 && (int64_t)d != d)
89 error= "Expected int64 for %s but found %s\n";
90 else if (type == OPT_INT && (int)d != d)
91 error= "Expected int for %s but found %s\n";
94 av_log(NULL, AV_LOG_FATAL, error, context, numstr, min, max);
99 int64_t parse_time_or_die(const char *context, const char *timestr, int is_duration)
102 if (av_parse_time(&us, timestr, is_duration) < 0) {
103 av_log(NULL, AV_LOG_FATAL, "Invalid %s specification for %s: %s\n",
104 is_duration ? "duration" : "date", context, timestr);
110 void show_help_options(const OptionDef *options, const char *msg, int mask, int value)
116 for(po = options; po->name != NULL; po++) {
118 if ((po->flags & mask) == value) {
123 av_strlcpy(buf, po->name, sizeof(buf));
124 if (po->flags & HAS_ARG) {
125 av_strlcat(buf, " ", sizeof(buf));
126 av_strlcat(buf, po->argname, sizeof(buf));
128 printf("-%-17s %s\n", buf, po->help);
133 void show_help_children(const AVClass *class, int flags)
135 const AVClass *child = NULL;
136 av_opt_show2(&class, NULL, flags, 0);
139 while (child = av_opt_child_class_next(class, child))
140 show_help_children(child, flags);
143 static const OptionDef* find_option(const OptionDef *po, const char *name){
144 const char *p = strchr(name, ':');
145 int len = p ? p - name : strlen(name);
147 while (po->name != NULL) {
148 if (!strncmp(name, po->name, len) && strlen(po->name) == len)
155 #if defined(_WIN32) && !defined(__MINGW32CE__)
157 /* Will be leaked on exit */
158 static char** win32_argv_utf8 = NULL;
159 static int win32_argc = 0;
162 * Prepare command line arguments for executable.
163 * For Windows - perform wide-char to UTF-8 conversion.
164 * Input arguments should be main() function arguments.
165 * @param argc_ptr Arguments number (including executable)
166 * @param argv_ptr Arguments list.
168 static void prepare_app_arguments(int *argc_ptr, char ***argv_ptr)
172 int i, buffsize = 0, offset = 0;
174 if (win32_argv_utf8) {
175 *argc_ptr = win32_argc;
176 *argv_ptr = win32_argv_utf8;
181 argv_w = CommandLineToArgvW(GetCommandLineW(), &win32_argc);
182 if (win32_argc <= 0 || !argv_w)
185 /* determine the UTF-8 buffer size (including NULL-termination symbols) */
186 for (i = 0; i < win32_argc; i++)
187 buffsize += WideCharToMultiByte(CP_UTF8, 0, argv_w[i], -1,
188 NULL, 0, NULL, NULL);
190 win32_argv_utf8 = av_mallocz(sizeof(char*) * (win32_argc + 1) + buffsize);
191 argstr_flat = (char*)win32_argv_utf8 + sizeof(char*) * (win32_argc + 1);
192 if (win32_argv_utf8 == NULL) {
197 for (i = 0; i < win32_argc; i++) {
198 win32_argv_utf8[i] = &argstr_flat[offset];
199 offset += WideCharToMultiByte(CP_UTF8, 0, argv_w[i], -1,
200 &argstr_flat[offset],
201 buffsize - offset, NULL, NULL);
203 win32_argv_utf8[i] = NULL;
206 *argc_ptr = win32_argc;
207 *argv_ptr = win32_argv_utf8;
210 static inline void prepare_app_arguments(int *argc_ptr, char ***argv_ptr)
214 #endif /* WIN32 && !__MINGW32CE__ */
217 int parse_option(void *optctx, const char *opt, const char *arg, const OptionDef *options)
224 po = find_option(options, opt);
225 if (!po->name && opt[0] == 'n' && opt[1] == 'o') {
226 /* handle 'no' bool option */
227 po = find_option(options, opt + 2);
228 if (!(po->name && (po->flags & OPT_BOOL)))
233 po = find_option(options, "default");
236 av_log(NULL, AV_LOG_ERROR, "Unrecognized option '%s'\n", opt);
237 return AVERROR(EINVAL);
239 if (po->flags & HAS_ARG && !arg) {
240 av_log(NULL, AV_LOG_ERROR, "Missing argument for option '%s'\n", opt);
241 return AVERROR(EINVAL);
244 /* new-style options contain an offset into optctx, old-style address of
246 dst = po->flags & (OPT_OFFSET|OPT_SPEC) ? (uint8_t*)optctx + po->u.off : po->u.dst_ptr;
248 if (po->flags & OPT_SPEC) {
249 SpecifierOpt **so = dst;
250 char *p = strchr(opt, ':');
252 dstcount = (int*)(so + 1);
253 *so = grow_array(*so, sizeof(**so), dstcount, *dstcount + 1);
254 (*so)[*dstcount - 1].specifier = av_strdup(p ? p + 1 : "");
255 dst = &(*so)[*dstcount - 1].u;
258 if (po->flags & OPT_STRING) {
260 str = av_strdup(arg);
262 } else if (po->flags & OPT_BOOL) {
263 *(int*)dst = bool_val;
264 } else if (po->flags & OPT_INT) {
265 *(int*)dst = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
266 } else if (po->flags & OPT_INT64) {
267 *(int64_t*)dst = parse_number_or_die(opt, arg, OPT_INT64, INT64_MIN, INT64_MAX);
268 } else if (po->flags & OPT_TIME) {
269 *(int64_t*)dst = parse_time_or_die(opt, arg, 1);
270 } else if (po->flags & OPT_FLOAT) {
271 *(float*)dst = parse_number_or_die(opt, arg, OPT_FLOAT, -INFINITY, INFINITY);
272 } else if (po->flags & OPT_DOUBLE) {
273 *(double*)dst = parse_number_or_die(opt, arg, OPT_DOUBLE, -INFINITY, INFINITY);
274 } else if (po->u.func_arg) {
275 int ret = po->flags & OPT_FUNC2 ? po->u.func2_arg(optctx, opt, arg) :
276 po->u.func_arg(opt, arg);
278 av_log(NULL, AV_LOG_ERROR, "Failed to set value '%s' for option '%s'\n", arg, opt);
282 if (po->flags & OPT_EXIT)
284 return !!(po->flags & HAS_ARG);
287 void parse_options(void *optctx, int argc, char **argv, const OptionDef *options,
288 void (* parse_arg_function)(void *, const char*))
291 int optindex, handleoptions = 1, ret;
293 /* perform system-dependent conversions for arguments list */
294 prepare_app_arguments(&argc, &argv);
298 while (optindex < argc) {
299 opt = argv[optindex++];
301 if (handleoptions && opt[0] == '-' && opt[1] != '\0') {
302 if (opt[1] == '-' && opt[2] == '\0') {
308 if ((ret = parse_option(optctx, opt, argv[optindex], options)) < 0)
312 if (parse_arg_function)
313 parse_arg_function(optctx, opt);
319 * Return index of option opt in argv or 0 if not found.
321 static int locate_option(int argc, char **argv, const OptionDef *options, const char *optname)
326 for (i = 1; i < argc; i++) {
327 const char *cur_opt = argv[i];
329 if (*cur_opt++ != '-')
332 po = find_option(options, cur_opt);
333 if (!po->name && cur_opt[0] == 'n' && cur_opt[1] == 'o')
334 po = find_option(options, cur_opt + 2);
336 if ((!po->name && !strcmp(cur_opt, optname)) ||
337 (po->name && !strcmp(optname, po->name)))
340 if (!po || po->flags & HAS_ARG)
346 void parse_loglevel(int argc, char **argv, const OptionDef *options)
348 int idx = locate_option(argc, argv, options, "loglevel");
350 idx = locate_option(argc, argv, options, "v");
351 if (idx && argv[idx + 1])
352 opt_loglevel("loglevel", argv[idx + 1]);
355 #define FLAGS(o) ((o)->type == AV_OPT_TYPE_FLAGS) ? AV_DICT_APPEND : 0
356 int opt_default(const char *opt, const char *arg)
358 const AVOption *oc, *of, *os;
359 char opt_stripped[128];
361 const AVClass *cc = avcodec_get_class(), *fc = avformat_get_class(), *sc;
363 if (!(p = strchr(opt, ':')))
364 p = opt + strlen(opt);
365 av_strlcpy(opt_stripped, opt, FFMIN(sizeof(opt_stripped), p - opt + 1));
367 if ((oc = av_opt_find(&cc, opt_stripped, NULL, 0, AV_OPT_SEARCH_CHILDREN|AV_OPT_SEARCH_FAKE_OBJ)) ||
368 ((opt[0] == 'v' || opt[0] == 'a' || opt[0] == 's') &&
369 (oc = av_opt_find(&cc, opt+1, NULL, 0, AV_OPT_SEARCH_FAKE_OBJ))))
370 av_dict_set(&codec_opts, opt, arg, FLAGS(oc));
371 if ((of = av_opt_find(&fc, opt, NULL, 0, AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ)))
372 av_dict_set(&format_opts, opt, arg, FLAGS(of));
374 sc = sws_get_class();
375 if ((os = av_opt_find(&sc, opt, NULL, 0, AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ))) {
376 // XXX we only support sws_flags, not arbitrary sws options
377 int ret = av_opt_set(sws_opts, opt, arg, 0);
379 av_log(NULL, AV_LOG_ERROR, "Error setting option %s.\n", opt);
387 av_log(NULL, AV_LOG_ERROR, "Unrecognized option '%s'\n", opt);
388 return AVERROR_OPTION_NOT_FOUND;
391 int opt_loglevel(const char *opt, const char *arg)
393 const struct { const char *name; int level; } log_levels[] = {
394 { "quiet" , AV_LOG_QUIET },
395 { "panic" , AV_LOG_PANIC },
396 { "fatal" , AV_LOG_FATAL },
397 { "error" , AV_LOG_ERROR },
398 { "warning", AV_LOG_WARNING },
399 { "info" , AV_LOG_INFO },
400 { "verbose", AV_LOG_VERBOSE },
401 { "debug" , AV_LOG_DEBUG },
407 for (i = 0; i < FF_ARRAY_ELEMS(log_levels); i++) {
408 if (!strcmp(log_levels[i].name, arg)) {
409 av_log_set_level(log_levels[i].level);
414 level = strtol(arg, &tail, 10);
416 av_log(NULL, AV_LOG_FATAL, "Invalid loglevel \"%s\". "
417 "Possible levels are numbers or:\n", arg);
418 for (i = 0; i < FF_ARRAY_ELEMS(log_levels); i++)
419 av_log(NULL, AV_LOG_FATAL, "\"%s\"\n", log_levels[i].name);
422 av_log_set_level(level);
426 int opt_timelimit(const char *opt, const char *arg)
429 int lim = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
430 struct rlimit rl = { lim, lim + 1 };
431 if (setrlimit(RLIMIT_CPU, &rl))
434 av_log(NULL, AV_LOG_WARNING, "-%s not implemented on this OS\n", opt);
439 void print_error(const char *filename, int err)
442 const char *errbuf_ptr = errbuf;
444 if (av_strerror(err, errbuf, sizeof(errbuf)) < 0)
445 errbuf_ptr = strerror(AVUNERROR(err));
446 av_log(NULL, AV_LOG_ERROR, "%s: %s\n", filename, errbuf_ptr);
449 static int warned_cfg = 0;
452 #define SHOW_VERSION 2
453 #define SHOW_CONFIG 4
455 #define PRINT_LIB_INFO(libname, LIBNAME, flags, level) \
456 if (CONFIG_##LIBNAME) { \
457 const char *indent = flags & INDENT? " " : ""; \
458 if (flags & SHOW_VERSION) { \
459 unsigned int version = libname##_version(); \
460 av_log(NULL, level, "%slib%-9s %2d.%3d.%2d / %2d.%3d.%2d\n",\
462 LIB##LIBNAME##_VERSION_MAJOR, \
463 LIB##LIBNAME##_VERSION_MINOR, \
464 LIB##LIBNAME##_VERSION_MICRO, \
465 version >> 16, version >> 8 & 0xff, version & 0xff); \
467 if (flags & SHOW_CONFIG) { \
468 const char *cfg = libname##_configuration(); \
469 if (strcmp(FFMPEG_CONFIGURATION, cfg)) { \
471 av_log(NULL, level, \
472 "%sWARNING: library configuration mismatch\n", \
476 av_log(NULL, level, "%s%-11s configuration: %s\n", \
477 indent, #libname, cfg); \
482 static void print_all_libs_info(int flags, int level)
484 PRINT_LIB_INFO(avutil, AVUTIL, flags, level);
485 PRINT_LIB_INFO(avcodec, AVCODEC, flags, level);
486 PRINT_LIB_INFO(avformat, AVFORMAT, flags, level);
487 PRINT_LIB_INFO(avdevice, AVDEVICE, flags, level);
488 PRINT_LIB_INFO(avfilter, AVFILTER, flags, level);
489 PRINT_LIB_INFO(swscale, SWSCALE, flags, level);
490 PRINT_LIB_INFO(postproc, POSTPROC, flags, level);
493 void show_banner(void)
495 av_log(NULL, AV_LOG_INFO, "%s version " FFMPEG_VERSION ", Copyright (c) %d-%d the FFmpeg developers\n",
496 program_name, program_birth_year, this_year);
497 av_log(NULL, AV_LOG_INFO, " built on %s %s with %s %s\n",
498 __DATE__, __TIME__, CC_TYPE, CC_VERSION);
499 av_log(NULL, AV_LOG_INFO, " configuration: " FFMPEG_CONFIGURATION "\n");
500 print_all_libs_info(INDENT|SHOW_CONFIG, AV_LOG_INFO);
501 print_all_libs_info(INDENT|SHOW_VERSION, AV_LOG_INFO);
504 int opt_version(const char *opt, const char *arg) {
505 av_log_set_callback(log_callback_help);
506 printf("%s " FFMPEG_VERSION "\n", program_name);
507 print_all_libs_info(SHOW_VERSION, AV_LOG_INFO);
511 int opt_license(const char *opt, const char *arg)
515 "This version of %s has nonfree parts compiled in.\n"
516 "Therefore it is not legally redistributable.\n",
519 "%s is free software; you can redistribute it and/or modify\n"
520 "it under the terms of the GNU General Public License as published by\n"
521 "the Free Software Foundation; either version 3 of the License, or\n"
522 "(at your option) any later version.\n"
524 "%s is distributed in the hope that it will be useful,\n"
525 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
526 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
527 "GNU General Public License for more details.\n"
529 "You should have received a copy of the GNU General Public License\n"
530 "along with %s. If not, see <http://www.gnu.org/licenses/>.\n",
531 program_name, program_name, program_name
533 "%s is free software; you can redistribute it and/or modify\n"
534 "it under the terms of the GNU General Public License as published by\n"
535 "the Free Software Foundation; either version 2 of the License, or\n"
536 "(at your option) any later version.\n"
538 "%s is distributed in the hope that it will be useful,\n"
539 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
540 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
541 "GNU General Public License for more details.\n"
543 "You should have received a copy of the GNU General Public License\n"
544 "along with %s; if not, write to the Free Software\n"
545 "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n",
546 program_name, program_name, program_name
548 "%s is free software; you can redistribute it and/or modify\n"
549 "it under the terms of the GNU Lesser General Public License as published by\n"
550 "the Free Software Foundation; either version 3 of the License, or\n"
551 "(at your option) any later version.\n"
553 "%s is distributed in the hope that it will be useful,\n"
554 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
555 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
556 "GNU Lesser General Public License for more details.\n"
558 "You should have received a copy of the GNU Lesser General Public License\n"
559 "along with %s. If not, see <http://www.gnu.org/licenses/>.\n",
560 program_name, program_name, program_name
562 "%s is free software; you can redistribute it and/or\n"
563 "modify it under the terms of the GNU Lesser General Public\n"
564 "License as published by the Free Software Foundation; either\n"
565 "version 2.1 of the License, or (at your option) any later version.\n"
567 "%s is distributed in the hope that it will be useful,\n"
568 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
569 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU\n"
570 "Lesser General Public License for more details.\n"
572 "You should have received a copy of the GNU Lesser General Public\n"
573 "License along with %s; if not, write to the Free Software\n"
574 "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n",
575 program_name, program_name, program_name
581 int opt_formats(const char *opt, const char *arg)
583 AVInputFormat *ifmt=NULL;
584 AVOutputFormat *ofmt=NULL;
585 const char *last_name;
589 " D. = Demuxing supported\n"
590 " .E = Muxing supported\n"
596 const char *name=NULL;
597 const char *long_name=NULL;
599 while((ofmt= av_oformat_next(ofmt))) {
600 if((name == NULL || strcmp(ofmt->name, name)<0) &&
601 strcmp(ofmt->name, last_name)>0){
603 long_name= ofmt->long_name;
607 while((ifmt= av_iformat_next(ifmt))) {
608 if((name == NULL || strcmp(ifmt->name, name)<0) &&
609 strcmp(ifmt->name, last_name)>0){
611 long_name= ifmt->long_name;
614 if(name && strcmp(ifmt->name, name)==0)
626 long_name ? long_name:" ");
631 int opt_codecs(const char *opt, const char *arg)
633 AVCodec *p=NULL, *p2;
634 const char *last_name;
637 " D..... = Decoding supported\n"
638 " .E.... = Encoding supported\n"
639 " ..V... = Video codec\n"
640 " ..A... = Audio codec\n"
641 " ..S... = Subtitle codec\n"
642 " ...S.. = Supports draw_horiz_band\n"
643 " ....D. = Supports direct rendering method 1\n"
644 " .....T = Supports weird frame truncation\n"
651 const char *type_str;
654 while((p= av_codec_next(p))) {
655 if((p2==NULL || strcmp(p->name, p2->name)<0) &&
656 strcmp(p->name, last_name)>0){
658 decode= encode= cap=0;
660 if(p2 && strcmp(p->name, p2->name)==0){
661 if(p->decode) decode=1;
662 if(p->encode) encode=1;
663 cap |= p->capabilities;
671 case AVMEDIA_TYPE_VIDEO:
674 case AVMEDIA_TYPE_AUDIO:
677 case AVMEDIA_TYPE_SUBTITLE:
685 " %s%s%s%s%s%s %-15s %s",
686 decode ? "D": (/*p2->decoder ? "d":*/" "),
689 cap & CODEC_CAP_DRAW_HORIZ_BAND ? "S":" ",
690 cap & CODEC_CAP_DR1 ? "D":" ",
691 cap & CODEC_CAP_TRUNCATED ? "T":" ",
693 p2->long_name ? p2->long_name : "");
694 /* if(p2->decoder && decode==0)
695 printf(" use %s for decoding", p2->decoder->name);*/
700 "Note, the names of encoders and decoders do not always match, so there are\n"
701 "several cases where the above table shows encoder only or decoder only entries\n"
702 "even though both encoding and decoding are supported. For example, the h263\n"
703 "decoder corresponds to the h263 and h263p encoders, for file formats it is even\n"
708 int opt_bsfs(const char *opt, const char *arg)
710 AVBitStreamFilter *bsf=NULL;
712 printf("Bitstream filters:\n");
713 while((bsf = av_bitstream_filter_next(bsf)))
714 printf("%s\n", bsf->name);
719 int opt_protocols(const char *opt, const char *arg)
721 URLProtocol *up=NULL;
723 printf("Supported file protocols:\n"
724 "I.. = Input supported\n"
725 ".O. = Output supported\n"
726 "..S = Seek supported\n"
729 while((up = av_protocol_next(up)))
730 printf("%c%c%c %s\n",
731 up->url_read ? 'I' : '.',
732 up->url_write ? 'O' : '.',
733 up->url_seek ? 'S' : '.',
738 int opt_filters(const char *opt, const char *arg)
740 AVFilter av_unused(**filter) = NULL;
742 printf("Filters:\n");
744 while ((filter = av_filter_next(filter)) && *filter)
745 printf("%-16s %s\n", (*filter)->name, (*filter)->description);
750 int opt_pix_fmts(const char *opt, const char *arg)
752 enum PixelFormat pix_fmt;
756 "I.... = Supported Input format for conversion\n"
757 ".O... = Supported Output format for conversion\n"
758 "..H.. = Hardware accelerated format\n"
759 "...P. = Paletted format\n"
760 "....B = Bitstream format\n"
761 "FLAGS NAME NB_COMPONENTS BITS_PER_PIXEL\n"
765 # define sws_isSupportedInput(x) 0
766 # define sws_isSupportedOutput(x) 0
769 for (pix_fmt = 0; pix_fmt < PIX_FMT_NB; pix_fmt++) {
770 const AVPixFmtDescriptor *pix_desc = &av_pix_fmt_descriptors[pix_fmt];
771 printf("%c%c%c%c%c %-16s %d %2d\n",
772 sws_isSupportedInput (pix_fmt) ? 'I' : '.',
773 sws_isSupportedOutput(pix_fmt) ? 'O' : '.',
774 pix_desc->flags & PIX_FMT_HWACCEL ? 'H' : '.',
775 pix_desc->flags & PIX_FMT_PAL ? 'P' : '.',
776 pix_desc->flags & PIX_FMT_BITSTREAM ? 'B' : '.',
778 pix_desc->nb_components,
779 av_get_bits_per_pixel(pix_desc));
784 int show_sample_fmts(const char *opt, const char *arg)
788 for (i = -1; i < AV_SAMPLE_FMT_NB; i++)
789 printf("%s\n", av_get_sample_fmt_string(fmt_str, sizeof(fmt_str), i));
796 int yesno = (toupper(c) == 'Y');
798 while (c != '\n' && c != EOF)
804 int read_file(const char *filename, char **bufptr, size_t *size)
806 FILE *f = fopen(filename, "rb");
809 av_log(NULL, AV_LOG_ERROR, "Cannot read file '%s': %s\n", filename, strerror(errno));
810 return AVERROR(errno);
812 fseek(f, 0, SEEK_END);
814 fseek(f, 0, SEEK_SET);
815 *bufptr = av_malloc(*size + 1);
817 av_log(NULL, AV_LOG_ERROR, "Could not allocate file buffer\n");
819 return AVERROR(ENOMEM);
821 fread(*bufptr, 1, *size, f);
822 (*bufptr)[*size++] = '\0';
828 FILE *get_preset_file(char *filename, size_t filename_size,
829 const char *preset_name, int is_path, const char *codec_name)
833 const char *base[3]= { getenv("FFMPEG_DATADIR"),
839 av_strlcpy(filename, preset_name, filename_size);
840 f = fopen(filename, "r");
843 char datadir[MAX_PATH], *ls;
846 if (GetModuleFileNameA(GetModuleHandleA(NULL), datadir, sizeof(datadir) - 1))
848 for (ls = datadir; ls < datadir + strlen(datadir); ls++)
849 if (*ls == '\\') *ls = '/';
851 if (ls = strrchr(datadir, '/'))
854 strncat(datadir, "/ffpresets", sizeof(datadir) - 1 - strlen(datadir));
859 for (i = 0; i < 3 && !f; i++) {
862 snprintf(filename, filename_size, "%s%s/%s.ffpreset", base[i], i != 1 ? "" : "/.ffmpeg", preset_name);
863 f = fopen(filename, "r");
864 if (!f && codec_name) {
865 snprintf(filename, filename_size,
866 "%s%s/%s-%s.ffpreset", base[i], i != 1 ? "" : "/.ffmpeg", codec_name, preset_name);
867 f = fopen(filename, "r");
875 int check_stream_specifier(AVFormatContext *s, AVStream *st, const char *spec)
877 if (*spec <= '9' && *spec >= '0') /* opt:index */
878 return strtol(spec, NULL, 0) == st->index;
879 else if (*spec == 'v' || *spec == 'a' || *spec == 's' || *spec == 'd' || *spec == 't') { /* opt:[vasdt] */
880 enum AVMediaType type;
883 case 'v': type = AVMEDIA_TYPE_VIDEO; break;
884 case 'a': type = AVMEDIA_TYPE_AUDIO; break;
885 case 's': type = AVMEDIA_TYPE_SUBTITLE; break;
886 case 'd': type = AVMEDIA_TYPE_DATA; break;
887 case 't': type = AVMEDIA_TYPE_ATTACHMENT; break;
888 default: abort(); // never reached, silence warning
890 if (type != st->codec->codec_type)
892 if (*spec++ == ':') { /* possibly followed by :index */
893 int i, index = strtol(spec, NULL, 0);
894 for (i = 0; i < s->nb_streams; i++)
895 if (s->streams[i]->codec->codec_type == type && index-- == 0)
896 return i == st->index;
900 } else if (*spec == 'p' && *(spec + 1) == ':') {
904 prog_id = strtol(spec, &endptr, 0);
905 for (i = 0; i < s->nb_programs; i++) {
906 if (s->programs[i]->id != prog_id)
909 if (*endptr++ == ':') {
910 int stream_idx = strtol(endptr, NULL, 0);
911 return (stream_idx >= 0 && stream_idx < s->programs[i]->nb_stream_indexes &&
912 st->index == s->programs[i]->stream_index[stream_idx]);
915 for (j = 0; j < s->programs[i]->nb_stream_indexes; j++)
916 if (st->index == s->programs[i]->stream_index[j])
920 } else if (!*spec) /* empty specifier, matches everything */
923 av_log(s, AV_LOG_ERROR, "Invalid stream specifier: %s.\n", spec);
924 return AVERROR(EINVAL);
927 AVDictionary *filter_codec_opts(AVDictionary *opts, enum CodecID codec_id, AVFormatContext *s, AVStream *st)
929 AVDictionary *ret = NULL;
930 AVDictionaryEntry *t = NULL;
931 AVCodec *codec = s->oformat ? avcodec_find_encoder(codec_id) : avcodec_find_decoder(codec_id);
932 int flags = s->oformat ? AV_OPT_FLAG_ENCODING_PARAM : AV_OPT_FLAG_DECODING_PARAM;
934 const AVClass *cc = avcodec_get_class();
939 switch (codec->type) {
940 case AVMEDIA_TYPE_VIDEO: prefix = 'v'; flags |= AV_OPT_FLAG_VIDEO_PARAM; break;
941 case AVMEDIA_TYPE_AUDIO: prefix = 'a'; flags |= AV_OPT_FLAG_AUDIO_PARAM; break;
942 case AVMEDIA_TYPE_SUBTITLE: prefix = 's'; flags |= AV_OPT_FLAG_SUBTITLE_PARAM; break;
945 while (t = av_dict_get(opts, "", t, AV_DICT_IGNORE_SUFFIX)) {
946 char *p = strchr(t->key, ':');
948 /* check stream specification in opt name */
950 switch (check_stream_specifier(s, st, p + 1)) {
951 case 1: *p = 0; break;
953 default: return NULL;
956 if (av_opt_find(&cc, t->key, NULL, flags, AV_OPT_SEARCH_FAKE_OBJ) ||
957 (codec && codec->priv_class && av_opt_find(&codec->priv_class, t->key, NULL, flags, AV_OPT_SEARCH_FAKE_OBJ)))
958 av_dict_set(&ret, t->key, t->value, 0);
959 else if (t->key[0] == prefix && av_opt_find(&cc, t->key+1, NULL, flags, AV_OPT_SEARCH_FAKE_OBJ))
960 av_dict_set(&ret, t->key+1, t->value, 0);
968 AVDictionary **setup_find_stream_info_opts(AVFormatContext *s, AVDictionary *codec_opts)
975 opts = av_mallocz(s->nb_streams * sizeof(*opts));
977 av_log(NULL, AV_LOG_ERROR, "Could not alloc memory for stream options.\n");
980 for (i = 0; i < s->nb_streams; i++)
981 opts[i] = filter_codec_opts(codec_opts, s->streams[i]->codec->codec_id, s, s->streams[i]);
985 void *grow_array(void *array, int elem_size, int *size, int new_size)
987 if (new_size >= INT_MAX / elem_size) {
988 av_log(NULL, AV_LOG_ERROR, "Array too big.\n");
991 if (*size < new_size) {
992 uint8_t *tmp = av_realloc(array, new_size*elem_size);
994 av_log(NULL, AV_LOG_ERROR, "Could not alloc buffer.\n");
997 memset(tmp + *size*elem_size, 0, (new_size-*size) * elem_size);