lavc decoders: properly initialize AVFrame.
[FFMpeg-mirror/mplayer-patches.git] / avprobe.c
blob2f15d5ce2a8e539f019a9bb8240b9dade8fc5d90
1 /*
2 * avprobe : Simple Media Prober based on the Libav libraries
3 * Copyright (c) 2007-2010 Stefano Sabatini
5 * This file is part of Libav.
7 * Libav 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 * Libav 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 Libav; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 #include "config.h"
24 #include "libavformat/avformat.h"
25 #include "libavcodec/avcodec.h"
26 #include "libavutil/avstring.h"
27 #include "libavutil/opt.h"
28 #include "libavutil/pixdesc.h"
29 #include "libavutil/dict.h"
30 #include "libavutil/libm.h"
31 #include "libavdevice/avdevice.h"
32 #include "cmdutils.h"
34 const char program_name[] = "avprobe";
35 const int program_birth_year = 2007;
37 static int do_show_format = 0;
38 static AVDictionary *fmt_entries_to_show = NULL;
39 static int nb_fmt_entries_to_show;
40 static int do_show_packets = 0;
41 static int do_show_streams = 0;
43 static int show_value_unit = 0;
44 static int use_value_prefix = 0;
45 static int use_byte_value_binary_prefix = 0;
46 static int use_value_sexagesimal_format = 0;
48 /* globals */
49 static const OptionDef *options;
51 /* AVprobe context */
52 static const char *input_filename;
53 static AVInputFormat *iformat = NULL;
55 static const char *const binary_unit_prefixes [] = { "", "Ki", "Mi", "Gi", "Ti", "Pi" };
56 static const char *const decimal_unit_prefixes[] = { "", "K" , "M" , "G" , "T" , "P" };
58 static const char unit_second_str[] = "s" ;
59 static const char unit_hertz_str[] = "Hz" ;
60 static const char unit_byte_str[] = "byte" ;
61 static const char unit_bit_per_second_str[] = "bit/s";
63 static void exit_program(void)
65 av_dict_free(&fmt_entries_to_show);
69 * The output is structured in array and objects that might contain items
70 * Array could require the objects within to not be named.
71 * Object could require the items within to be named.
73 * For flat representation the name of each section is saved on prefix so it
74 * can be rendered in order to represent nested structures (e.g. array of
75 * objects for the packets list).
77 * Within an array each element can need an unique identifier or an index.
79 * Nesting level is accounted separately.
82 typedef enum {
83 ARRAY,
84 OBJECT
85 } ProbeElementType;
87 typedef struct {
88 const char *name;
89 ProbeElementType type;
90 int64_t index;
91 int64_t nb_elems;
92 } ProbeElement;
94 typedef struct {
95 ProbeElement *prefix;
96 int level;
97 void (*print_header)(void);
98 void (*print_footer)(void);
100 void (*print_array_header) (const char *name);
101 void (*print_array_footer) (const char *name);
102 void (*print_object_header)(const char *name);
103 void (*print_object_footer)(const char *name);
105 void (*print_integer) (const char *key, int64_t value);
106 void (*print_string) (const char *key, const char *value);
107 } OutputContext;
109 static AVIOContext *probe_out = NULL;
110 static OutputContext octx;
111 #define AVP_INDENT() avio_printf(probe_out, "%*c", octx.level * 2, ' ')
114 * Default format, INI
116 * - all key and values are utf8
117 * - '.' is the subgroup separator
118 * - newlines and the following characters are escaped
119 * - '\' is the escape character
120 * - '#' is the comment
121 * - '=' is the key/value separators
122 * - ':' is not used but usually parsed as key/value separator
125 static void ini_print_header(void)
127 avio_printf(probe_out, "# avprobe output\n\n");
129 static void ini_print_footer(void)
131 avio_w8(probe_out, '\n');
134 static void ini_escape_print(const char *s)
136 int i = 0;
137 char c = 0;
139 while (c = s[i++]) {
140 switch (c) {
141 case '\r': avio_printf(probe_out, "%s", "\\r"); break;
142 case '\n': avio_printf(probe_out, "%s", "\\n"); break;
143 case '\f': avio_printf(probe_out, "%s", "\\f"); break;
144 case '\b': avio_printf(probe_out, "%s", "\\b"); break;
145 case '\t': avio_printf(probe_out, "%s", "\\t"); break;
146 case '\\':
147 case '#' :
148 case '=' :
149 case ':' : avio_w8(probe_out, '\\');
150 default:
151 if ((unsigned char)c < 32)
152 avio_printf(probe_out, "\\x00%02x", c & 0xff);
153 else
154 avio_w8(probe_out, c);
155 break;
160 static void ini_print_array_header(const char *name)
162 if (octx.prefix[octx.level -1].nb_elems)
163 avio_printf(probe_out, "\n");
166 static void ini_print_object_header(const char *name)
168 int i;
169 ProbeElement *el = octx.prefix + octx.level -1;
171 if (el->nb_elems)
172 avio_printf(probe_out, "\n");
174 avio_printf(probe_out, "[");
176 for (i = 1; i < octx.level; i++) {
177 el = octx.prefix + i;
178 avio_printf(probe_out, "%s.", el->name);
179 if (el->index >= 0)
180 avio_printf(probe_out, "%"PRId64".", el->index);
183 avio_printf(probe_out, "%s", name);
184 if (el && el->type == ARRAY)
185 avio_printf(probe_out, ".%"PRId64"", el->nb_elems);
186 avio_printf(probe_out, "]\n");
189 static void ini_print_integer(const char *key, int64_t value)
191 ini_escape_print(key);
192 avio_printf(probe_out, "=%"PRId64"\n", value);
196 static void ini_print_string(const char *key, const char *value)
198 ini_escape_print(key);
199 avio_printf(probe_out, "=");
200 ini_escape_print(value);
201 avio_w8(probe_out, '\n');
205 * Alternate format, JSON
208 static void json_print_header(void)
210 avio_printf(probe_out, "{");
212 static void json_print_footer(void)
214 avio_printf(probe_out, "}\n");
217 static void json_print_array_header(const char *name)
219 if (octx.prefix[octx.level -1].nb_elems)
220 avio_printf(probe_out, ",\n");
221 AVP_INDENT();
222 avio_printf(probe_out, "\"%s\" : ", name);
223 avio_printf(probe_out, "[\n");
226 static void json_print_array_footer(const char *name)
228 avio_printf(probe_out, "\n");
229 AVP_INDENT();
230 avio_printf(probe_out, "]");
233 static void json_print_object_header(const char *name)
235 if (octx.prefix[octx.level -1].nb_elems)
236 avio_printf(probe_out, ",\n");
237 AVP_INDENT();
238 if (octx.prefix[octx.level -1].type == OBJECT)
239 avio_printf(probe_out, "\"%s\" : ", name);
240 avio_printf(probe_out, "{\n");
243 static void json_print_object_footer(const char *name)
245 avio_printf(probe_out, "\n");
246 AVP_INDENT();
247 avio_printf(probe_out, "}");
250 static void json_print_integer(const char *key, int64_t value)
252 if (octx.prefix[octx.level -1].nb_elems)
253 avio_printf(probe_out, ",\n");
254 AVP_INDENT();
255 avio_printf(probe_out, "\"%s\" : %"PRId64"", key, value);
258 static void json_escape_print(const char *s)
260 int i = 0;
261 char c = 0;
263 while (c = s[i++]) {
264 switch (c) {
265 case '\r': avio_printf(probe_out, "%s", "\\r"); break;
266 case '\n': avio_printf(probe_out, "%s", "\\n"); break;
267 case '\f': avio_printf(probe_out, "%s", "\\f"); break;
268 case '\b': avio_printf(probe_out, "%s", "\\b"); break;
269 case '\t': avio_printf(probe_out, "%s", "\\t"); break;
270 case '\\':
271 case '"' : avio_w8(probe_out, '\\');
272 default:
273 if ((unsigned char)c < 32)
274 avio_printf(probe_out, "\\u00%02x", c & 0xff);
275 else
276 avio_w8(probe_out, c);
277 break;
282 static void json_print_string(const char *key, const char *value)
284 if (octx.prefix[octx.level -1].nb_elems)
285 avio_printf(probe_out, ",\n");
286 AVP_INDENT();
287 avio_w8(probe_out, '\"');
288 json_escape_print(key);
289 avio_printf(probe_out, "\" : \"");
290 json_escape_print(value);
291 avio_w8(probe_out, '\"');
295 * old-style pseudo-INI
297 static void old_print_object_header(const char *name)
299 char *str, *p;
301 if (!strcmp(name, "tags"))
302 return;
304 str = p = av_strdup(name);
305 while (*p) {
306 *p = av_toupper(*p);
307 p++;
310 avio_printf(probe_out, "[%s]\n", str);
311 av_freep(&str);
314 static void old_print_object_footer(const char *name)
316 char *str, *p;
318 if (!strcmp(name, "tags"))
319 return;
321 str = p = av_strdup(name);
322 while (*p) {
323 *p = av_toupper(*p);
324 p++;
327 avio_printf(probe_out, "[/%s]\n", str);
328 av_freep(&str);
331 static void old_print_string(const char *key, const char *value)
333 if (!strcmp(octx.prefix[octx.level - 1].name, "tags"))
334 avio_printf(probe_out, "TAG:");
335 ini_print_string(key, value);
339 * Simple Formatter for single entries.
342 static void show_format_entry_integer(const char *key, int64_t value)
344 if (key && av_dict_get(fmt_entries_to_show, key, NULL, 0)) {
345 if (nb_fmt_entries_to_show > 1)
346 avio_printf(probe_out, "%s=", key);
347 avio_printf(probe_out, "%"PRId64"\n", value);
351 static void show_format_entry_string(const char *key, const char *value)
353 if (key && av_dict_get(fmt_entries_to_show, key, NULL, 0)) {
354 if (nb_fmt_entries_to_show > 1)
355 avio_printf(probe_out, "%s=", key);
356 avio_printf(probe_out, "%s\n", value);
360 static void probe_group_enter(const char *name, int type)
362 int64_t count = -1;
364 octx.prefix =
365 av_realloc(octx.prefix, sizeof(ProbeElement) * (octx.level + 1));
367 if (!octx.prefix || !name) {
368 fprintf(stderr, "Out of memory\n");
369 exit(1);
372 if (octx.level) {
373 ProbeElement *parent = octx.prefix + octx.level -1;
374 if (parent->type == ARRAY)
375 count = parent->nb_elems;
376 parent->nb_elems++;
379 octx.prefix[octx.level++] = (ProbeElement){name, type, count, 0};
382 static void probe_group_leave(void)
384 --octx.level;
387 static void probe_header(void)
389 if (octx.print_header)
390 octx.print_header();
391 probe_group_enter("root", OBJECT);
394 static void probe_footer(void)
396 if (octx.print_footer)
397 octx.print_footer();
398 probe_group_leave();
402 static void probe_array_header(const char *name)
404 if (octx.print_array_header)
405 octx.print_array_header(name);
407 probe_group_enter(name, ARRAY);
410 static void probe_array_footer(const char *name)
412 probe_group_leave();
413 if (octx.print_array_footer)
414 octx.print_array_footer(name);
417 static void probe_object_header(const char *name)
419 if (octx.print_object_header)
420 octx.print_object_header(name);
422 probe_group_enter(name, OBJECT);
425 static void probe_object_footer(const char *name)
427 probe_group_leave();
428 if (octx.print_object_footer)
429 octx.print_object_footer(name);
432 static void probe_int(const char *key, int64_t value)
434 octx.print_integer(key, value);
435 octx.prefix[octx.level -1].nb_elems++;
438 static void probe_str(const char *key, const char *value)
440 octx.print_string(key, value);
441 octx.prefix[octx.level -1].nb_elems++;
444 static void probe_dict(AVDictionary *dict, const char *name)
446 AVDictionaryEntry *entry = NULL;
447 if (!dict)
448 return;
449 probe_object_header(name);
450 while ((entry = av_dict_get(dict, "", entry, AV_DICT_IGNORE_SUFFIX))) {
451 probe_str(entry->key, entry->value);
453 probe_object_footer(name);
456 static char *value_string(char *buf, int buf_size, double val, const char *unit)
458 if (unit == unit_second_str && use_value_sexagesimal_format) {
459 double secs;
460 int hours, mins;
461 secs = val;
462 mins = (int)secs / 60;
463 secs = secs - mins * 60;
464 hours = mins / 60;
465 mins %= 60;
466 snprintf(buf, buf_size, "%d:%02d:%09.6f", hours, mins, secs);
467 } else if (use_value_prefix) {
468 const char *prefix_string;
469 int index;
471 if (unit == unit_byte_str && use_byte_value_binary_prefix) {
472 index = (int) log2(val) / 10;
473 index = av_clip(index, 0, FF_ARRAY_ELEMS(binary_unit_prefixes) - 1);
474 val /= pow(2, index * 10);
475 prefix_string = binary_unit_prefixes[index];
476 } else {
477 index = (int) (log10(val)) / 3;
478 index = av_clip(index, 0, FF_ARRAY_ELEMS(decimal_unit_prefixes) - 1);
479 val /= pow(10, index * 3);
480 prefix_string = decimal_unit_prefixes[index];
482 snprintf(buf, buf_size, "%.*f%s%s",
483 index ? 3 : 0, val,
484 prefix_string,
485 show_value_unit ? unit : "");
486 } else {
487 snprintf(buf, buf_size, "%f%s", val, show_value_unit ? unit : "");
490 return buf;
493 static char *time_value_string(char *buf, int buf_size, int64_t val,
494 const AVRational *time_base)
496 if (val == AV_NOPTS_VALUE) {
497 snprintf(buf, buf_size, "N/A");
498 } else {
499 value_string(buf, buf_size, val * av_q2d(*time_base), unit_second_str);
502 return buf;
505 static char *ts_value_string(char *buf, int buf_size, int64_t ts)
507 if (ts == AV_NOPTS_VALUE) {
508 snprintf(buf, buf_size, "N/A");
509 } else {
510 snprintf(buf, buf_size, "%"PRId64, ts);
513 return buf;
516 static char *rational_string(char *buf, int buf_size, const char *sep,
517 const AVRational *rat)
519 snprintf(buf, buf_size, "%d%s%d", rat->num, sep, rat->den);
520 return buf;
523 static char *tag_string(char *buf, int buf_size, int tag)
525 snprintf(buf, buf_size, "0x%04x", tag);
526 return buf;
531 static const char *media_type_string(enum AVMediaType media_type)
533 switch (media_type) {
534 case AVMEDIA_TYPE_VIDEO: return "video";
535 case AVMEDIA_TYPE_AUDIO: return "audio";
536 case AVMEDIA_TYPE_DATA: return "data";
537 case AVMEDIA_TYPE_SUBTITLE: return "subtitle";
538 case AVMEDIA_TYPE_ATTACHMENT: return "attachment";
539 default: return "unknown";
543 static void show_packet(AVFormatContext *fmt_ctx, AVPacket *pkt)
545 char val_str[128];
546 AVStream *st = fmt_ctx->streams[pkt->stream_index];
548 probe_object_header("packet");
549 probe_str("codec_type", media_type_string(st->codec->codec_type));
550 probe_int("stream_index", pkt->stream_index);
551 probe_str("pts", ts_value_string(val_str, sizeof(val_str), pkt->pts));
552 probe_str("pts_time", time_value_string(val_str, sizeof(val_str),
553 pkt->pts, &st->time_base));
554 probe_str("dts", ts_value_string(val_str, sizeof(val_str), pkt->dts));
555 probe_str("dts_time", time_value_string(val_str, sizeof(val_str),
556 pkt->dts, &st->time_base));
557 probe_str("duration", ts_value_string(val_str, sizeof(val_str),
558 pkt->duration));
559 probe_str("duration_time", time_value_string(val_str, sizeof(val_str),
560 pkt->duration,
561 &st->time_base));
562 probe_str("size", value_string(val_str, sizeof(val_str),
563 pkt->size, unit_byte_str));
564 probe_int("pos", pkt->pos);
565 probe_str("flags", pkt->flags & AV_PKT_FLAG_KEY ? "K" : "_");
566 probe_object_footer("packet");
569 static void show_packets(AVFormatContext *fmt_ctx)
571 AVPacket pkt;
573 av_init_packet(&pkt);
574 probe_array_header("packets");
575 while (!av_read_frame(fmt_ctx, &pkt))
576 show_packet(fmt_ctx, &pkt);
577 probe_array_footer("packets");
580 static void show_stream(AVFormatContext *fmt_ctx, int stream_idx)
582 AVStream *stream = fmt_ctx->streams[stream_idx];
583 AVCodecContext *dec_ctx;
584 const AVCodec *dec;
585 const char *profile;
586 char val_str[128];
587 AVRational display_aspect_ratio, *sar = NULL;
588 const AVPixFmtDescriptor *desc;
590 probe_object_header("stream");
592 probe_int("index", stream->index);
594 if ((dec_ctx = stream->codec)) {
595 if ((dec = dec_ctx->codec)) {
596 probe_str("codec_name", dec->name);
597 probe_str("codec_long_name", dec->long_name);
598 } else {
599 probe_str("codec_name", "unknown");
602 probe_str("codec_type", media_type_string(dec_ctx->codec_type));
603 probe_str("codec_time_base",
604 rational_string(val_str, sizeof(val_str),
605 "/", &dec_ctx->time_base));
607 /* print AVI/FourCC tag */
608 av_get_codec_tag_string(val_str, sizeof(val_str), dec_ctx->codec_tag);
609 probe_str("codec_tag_string", val_str);
610 probe_str("codec_tag", tag_string(val_str, sizeof(val_str),
611 dec_ctx->codec_tag));
613 /* print profile, if there is one */
614 if (dec && (profile = av_get_profile_name(dec, dec_ctx->profile)))
615 probe_str("profile", profile);
617 switch (dec_ctx->codec_type) {
618 case AVMEDIA_TYPE_VIDEO:
619 probe_int("width", dec_ctx->width);
620 probe_int("height", dec_ctx->height);
621 probe_int("has_b_frames", dec_ctx->has_b_frames);
622 if (dec_ctx->sample_aspect_ratio.num)
623 sar = &dec_ctx->sample_aspect_ratio;
624 else if (stream->sample_aspect_ratio.num)
625 sar = &stream->sample_aspect_ratio;
627 if (sar) {
628 probe_str("sample_aspect_ratio",
629 rational_string(val_str, sizeof(val_str), ":", sar));
630 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
631 dec_ctx->width * sar->num, dec_ctx->height * sar->den,
632 1024*1024);
633 probe_str("display_aspect_ratio",
634 rational_string(val_str, sizeof(val_str), ":",
635 &display_aspect_ratio));
637 desc = av_pix_fmt_desc_get(dec_ctx->pix_fmt);
638 probe_str("pix_fmt", desc ? desc->name : "unknown");
639 probe_int("level", dec_ctx->level);
640 break;
642 case AVMEDIA_TYPE_AUDIO:
643 probe_str("sample_rate",
644 value_string(val_str, sizeof(val_str),
645 dec_ctx->sample_rate,
646 unit_hertz_str));
647 probe_int("channels", dec_ctx->channels);
648 probe_int("bits_per_sample",
649 av_get_bits_per_sample(dec_ctx->codec_id));
650 break;
652 } else {
653 probe_str("codec_type", "unknown");
656 if (fmt_ctx->iformat->flags & AVFMT_SHOW_IDS)
657 probe_int("id", stream->id);
658 probe_str("avg_frame_rate",
659 rational_string(val_str, sizeof(val_str), "/",
660 &stream->avg_frame_rate));
661 if (dec_ctx->bit_rate)
662 probe_str("bit_rate",
663 value_string(val_str, sizeof(val_str),
664 dec_ctx->bit_rate, unit_bit_per_second_str));
665 probe_str("time_base",
666 rational_string(val_str, sizeof(val_str), "/",
667 &stream->time_base));
668 probe_str("start_time",
669 time_value_string(val_str, sizeof(val_str),
670 stream->start_time, &stream->time_base));
671 probe_str("duration",
672 time_value_string(val_str, sizeof(val_str),
673 stream->duration, &stream->time_base));
674 if (stream->nb_frames)
675 probe_int("nb_frames", stream->nb_frames);
677 probe_dict(stream->metadata, "tags");
679 probe_object_footer("stream");
682 static void show_format(AVFormatContext *fmt_ctx)
684 char val_str[128];
685 int64_t size = fmt_ctx->pb ? avio_size(fmt_ctx->pb) : -1;
687 probe_object_header("format");
688 probe_str("filename", fmt_ctx->filename);
689 probe_int("nb_streams", fmt_ctx->nb_streams);
690 probe_str("format_name", fmt_ctx->iformat->name);
691 probe_str("format_long_name", fmt_ctx->iformat->long_name);
692 probe_str("start_time",
693 time_value_string(val_str, sizeof(val_str),
694 fmt_ctx->start_time, &AV_TIME_BASE_Q));
695 probe_str("duration",
696 time_value_string(val_str, sizeof(val_str),
697 fmt_ctx->duration, &AV_TIME_BASE_Q));
698 probe_str("size",
699 size >= 0 ? value_string(val_str, sizeof(val_str),
700 size, unit_byte_str)
701 : "unknown");
702 probe_str("bit_rate",
703 value_string(val_str, sizeof(val_str),
704 fmt_ctx->bit_rate, unit_bit_per_second_str));
706 probe_dict(fmt_ctx->metadata, "tags");
708 probe_object_footer("format");
711 static int open_input_file(AVFormatContext **fmt_ctx_ptr, const char *filename)
713 int err, i;
714 AVFormatContext *fmt_ctx = NULL;
715 AVDictionaryEntry *t;
717 if ((err = avformat_open_input(&fmt_ctx, filename,
718 iformat, &format_opts)) < 0) {
719 print_error(filename, err);
720 return err;
722 if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
723 av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
724 return AVERROR_OPTION_NOT_FOUND;
728 /* fill the streams in the format context */
729 if ((err = avformat_find_stream_info(fmt_ctx, NULL)) < 0) {
730 print_error(filename, err);
731 return err;
734 av_dump_format(fmt_ctx, 0, filename, 0);
736 /* bind a decoder to each input stream */
737 for (i = 0; i < fmt_ctx->nb_streams; i++) {
738 AVStream *stream = fmt_ctx->streams[i];
739 AVCodec *codec;
741 if (stream->codec->codec_id == AV_CODEC_ID_PROBE) {
742 fprintf(stderr, "Failed to probe codec for input stream %d\n",
743 stream->index);
744 } else if (!(codec = avcodec_find_decoder(stream->codec->codec_id))) {
745 fprintf(stderr,
746 "Unsupported codec with id %d for input stream %d\n",
747 stream->codec->codec_id, stream->index);
748 } else if (avcodec_open2(stream->codec, codec, NULL) < 0) {
749 fprintf(stderr, "Error while opening codec for input stream %d\n",
750 stream->index);
754 *fmt_ctx_ptr = fmt_ctx;
755 return 0;
758 static void close_input_file(AVFormatContext **ctx_ptr)
760 int i;
761 AVFormatContext *fmt_ctx = *ctx_ptr;
763 /* close decoder for each stream */
764 for (i = 0; i < fmt_ctx->nb_streams; i++) {
765 AVStream *stream = fmt_ctx->streams[i];
767 avcodec_close(stream->codec);
769 avformat_close_input(ctx_ptr);
772 static int probe_file(const char *filename)
774 AVFormatContext *fmt_ctx;
775 int ret, i;
777 if ((ret = open_input_file(&fmt_ctx, filename)))
778 return ret;
780 if (do_show_format)
781 show_format(fmt_ctx);
783 if (do_show_streams) {
784 probe_array_header("streams");
785 for (i = 0; i < fmt_ctx->nb_streams; i++)
786 show_stream(fmt_ctx, i);
787 probe_array_footer("streams");
790 if (do_show_packets)
791 show_packets(fmt_ctx);
793 close_input_file(&fmt_ctx);
794 return 0;
797 static void show_usage(void)
799 printf("Simple multimedia streams analyzer\n");
800 printf("usage: %s [OPTIONS] [INPUT_FILE]\n", program_name);
801 printf("\n");
804 static int opt_format(void *optctx, const char *opt, const char *arg)
806 iformat = av_find_input_format(arg);
807 if (!iformat) {
808 fprintf(stderr, "Unknown input format: %s\n", arg);
809 return AVERROR(EINVAL);
811 return 0;
814 static int opt_output_format(void *optctx, const char *opt, const char *arg)
817 if (!strcmp(arg, "json")) {
818 octx.print_header = json_print_header;
819 octx.print_footer = json_print_footer;
820 octx.print_array_header = json_print_array_header;
821 octx.print_array_footer = json_print_array_footer;
822 octx.print_object_header = json_print_object_header;
823 octx.print_object_footer = json_print_object_footer;
825 octx.print_integer = json_print_integer;
826 octx.print_string = json_print_string;
827 } else if (!strcmp(arg, "ini")) {
828 octx.print_header = ini_print_header;
829 octx.print_footer = ini_print_footer;
830 octx.print_array_header = ini_print_array_header;
831 octx.print_object_header = ini_print_object_header;
833 octx.print_integer = ini_print_integer;
834 octx.print_string = ini_print_string;
835 } else if (!strcmp(arg, "old")) {
836 octx.print_header = NULL;
837 octx.print_object_header = old_print_object_header;
838 octx.print_object_footer = old_print_object_footer;
840 octx.print_string = old_print_string;
841 } else {
842 av_log(NULL, AV_LOG_ERROR, "Unsupported formatter %s\n", arg);
843 return AVERROR(EINVAL);
845 return 0;
848 static int opt_show_format_entry(void *optctx, const char *opt, const char *arg)
850 do_show_format = 1;
851 nb_fmt_entries_to_show++;
852 octx.print_header = NULL;
853 octx.print_footer = NULL;
854 octx.print_array_header = NULL;
855 octx.print_array_footer = NULL;
856 octx.print_object_header = NULL;
857 octx.print_object_footer = NULL;
859 octx.print_integer = show_format_entry_integer;
860 octx.print_string = show_format_entry_string;
861 av_dict_set(&fmt_entries_to_show, arg, "", 0);
862 return 0;
865 static void opt_input_file(void *optctx, const char *arg)
867 if (input_filename) {
868 fprintf(stderr,
869 "Argument '%s' provided as input filename, but '%s' was already specified.\n",
870 arg, input_filename);
871 exit(1);
873 if (!strcmp(arg, "-"))
874 arg = "pipe:";
875 input_filename = arg;
878 void show_help_default(const char *opt, const char *arg)
880 av_log_set_callback(log_callback_help);
881 show_usage();
882 show_help_options(options, "Main options:", 0, 0, 0);
883 printf("\n");
884 show_help_children(avformat_get_class(), AV_OPT_FLAG_DECODING_PARAM);
887 static int opt_pretty(void *optctx, const char *opt, const char *arg)
889 show_value_unit = 1;
890 use_value_prefix = 1;
891 use_byte_value_binary_prefix = 1;
892 use_value_sexagesimal_format = 1;
893 return 0;
896 static const OptionDef real_options[] = {
897 #include "cmdutils_common_opts.h"
898 { "f", HAS_ARG, {.func_arg = opt_format}, "force format", "format" },
899 { "of", HAS_ARG, {.func_arg = opt_output_format}, "output the document either as ini or json", "output_format" },
900 { "unit", OPT_BOOL, {&show_value_unit},
901 "show unit of the displayed values" },
902 { "prefix", OPT_BOOL, {&use_value_prefix},
903 "use SI prefixes for the displayed values" },
904 { "byte_binary_prefix", OPT_BOOL, {&use_byte_value_binary_prefix},
905 "use binary prefixes for byte units" },
906 { "sexagesimal", OPT_BOOL, {&use_value_sexagesimal_format},
907 "use sexagesimal format HOURS:MM:SS.MICROSECONDS for time units" },
908 { "pretty", 0, {.func_arg = opt_pretty},
909 "prettify the format of displayed values, make it more human readable" },
910 { "show_format", OPT_BOOL, {&do_show_format} , "show format/container info" },
911 { "show_format_entry", HAS_ARG, {.func_arg = opt_show_format_entry},
912 "show a particular entry from the format/container info", "entry" },
913 { "show_packets", OPT_BOOL, {&do_show_packets}, "show packets info" },
914 { "show_streams", OPT_BOOL, {&do_show_streams}, "show streams info" },
915 { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, {.func_arg = opt_default},
916 "generic catch all option", "" },
917 { NULL, },
920 static int probe_buf_write(void *opaque, uint8_t *buf, int buf_size)
922 printf("%.*s", buf_size, buf);
923 return 0;
926 #define AVP_BUFFSIZE 4096
928 int main(int argc, char **argv)
930 int ret;
931 uint8_t *buffer = av_malloc(AVP_BUFFSIZE);
933 if (!buffer)
934 exit(1);
936 atexit(exit_program);
938 options = real_options;
939 parse_loglevel(argc, argv, options);
940 av_register_all();
941 avformat_network_init();
942 init_opts();
943 #if CONFIG_AVDEVICE
944 avdevice_register_all();
945 #endif
947 show_banner();
949 octx.print_header = ini_print_header;
950 octx.print_footer = ini_print_footer;
952 octx.print_array_header = ini_print_array_header;
953 octx.print_object_header = ini_print_object_header;
955 octx.print_integer = ini_print_integer;
956 octx.print_string = ini_print_string;
958 parse_options(NULL, argc, argv, options, opt_input_file);
960 if (!input_filename) {
961 show_usage();
962 fprintf(stderr, "You have to specify one input file.\n");
963 fprintf(stderr,
964 "Use -h to get full help or, even better, run 'man %s'.\n",
965 program_name);
966 exit(1);
969 probe_out = avio_alloc_context(buffer, AVP_BUFFSIZE, 1, NULL, NULL,
970 probe_buf_write, NULL);
971 if (!probe_out)
972 exit(1);
974 probe_header();
975 ret = probe_file(input_filename);
976 probe_footer();
977 avio_flush(probe_out);
978 avio_close(probe_out);
980 avformat_network_deinit();
982 return ret;