cmdutils: extend -h to allow printing codec details.
[libav.git] / avprobe.c
1 /*
2 * avprobe : Simple Media Prober based on the Libav libraries
3 * Copyright (c) 2007-2010 Stefano Sabatini
4 *
5 * This file is part of Libav.
6 *
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.
11 *
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.
16 *
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
20 */
21
22 #include "config.h"
23
24 #include "libavformat/avformat.h"
25 #include "libavcodec/avcodec.h"
26 #include "libavutil/opt.h"
27 #include "libavutil/pixdesc.h"
28 #include "libavutil/dict.h"
29 #include "libavutil/libm.h"
30 #include "libavdevice/avdevice.h"
31 #include "cmdutils.h"
32
33 const char program_name[] = "avprobe";
34 const int program_birth_year = 2007;
35
36 static int do_show_format = 0;
37 static AVDictionary *fmt_entries_to_show = NULL;
38 static int nb_fmt_entries_to_show;
39 static int do_show_packets = 0;
40 static int do_show_streams = 0;
41
42 static int show_value_unit = 0;
43 static int use_value_prefix = 0;
44 static int use_byte_value_binary_prefix = 0;
45 static int use_value_sexagesimal_format = 0;
46
47 /* globals */
48 static const OptionDef *options;
49
50 /* AVprobe context */
51 static const char *input_filename;
52 static AVInputFormat *iformat = NULL;
53
54 static const char *const binary_unit_prefixes [] = { "", "Ki", "Mi", "Gi", "Ti", "Pi" };
55 static const char *const decimal_unit_prefixes[] = { "", "K" , "M" , "G" , "T" , "P" };
56
57 static const char unit_second_str[] = "s" ;
58 static const char unit_hertz_str[] = "Hz" ;
59 static const char unit_byte_str[] = "byte" ;
60 static const char unit_bit_per_second_str[] = "bit/s";
61
62 void exit_program(int ret)
63 {
64 av_dict_free(&fmt_entries_to_show);
65 exit(ret);
66 }
67
68 /*
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.
72 *
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).
76 *
77 * Within an array each element can need an unique identifier or an index.
78 *
79 * Nesting level is accounted separately.
80 */
81
82 typedef enum {
83 ARRAY,
84 OBJECT
85 } ProbeElementType;
86
87 typedef struct {
88 const char *name;
89 ProbeElementType type;
90 int64_t index;
91 int64_t nb_elems;
92 } ProbeElement;
93
94 typedef struct {
95 ProbeElement *prefix;
96 int level;
97 void (*print_header)(void);
98 void (*print_footer)(void);
99
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);
104
105 void (*print_integer) (const char *key, int64_t value);
106 void (*print_string) (const char *key, const char *value);
107 } OutputContext;
108
109 static AVIOContext *probe_out = NULL;
110 static OutputContext octx;
111 #define AVP_INDENT() avio_printf(probe_out, "%*c", octx.level * 2, ' ')
112
113 /*
114 * Default format, INI
115 *
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
123 */
124
125 static void ini_print_header(void)
126 {
127 avio_printf(probe_out, "# avprobe output\n\n");
128 }
129 static void ini_print_footer(void)
130 {
131 avio_w8(probe_out, '\n');
132 }
133
134 static void ini_escape_print(const char *s)
135 {
136 int i = 0;
137 char c = 0;
138
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;
156 }
157 }
158 }
159
160 static void ini_print_array_header(const char *name)
161 {
162 if (octx.prefix[octx.level -1].nb_elems)
163 avio_printf(probe_out, "\n");
164 }
165
166 static void ini_print_object_header(const char *name)
167 {
168 int i;
169 ProbeElement *el = octx.prefix + octx.level -1;
170
171 if (el->nb_elems)
172 avio_printf(probe_out, "\n");
173
174 avio_printf(probe_out, "[");
175
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);
181 }
182
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");
187 }
188
189 static void ini_print_integer(const char *key, int64_t value)
190 {
191 ini_escape_print(key);
192 avio_printf(probe_out, "=%"PRId64"\n", value);
193 }
194
195
196 static void ini_print_string(const char *key, const char *value)
197 {
198 ini_escape_print(key);
199 avio_printf(probe_out, "=");
200 ini_escape_print(value);
201 avio_w8(probe_out, '\n');
202 }
203
204 /*
205 * Alternate format, JSON
206 */
207
208 static void json_print_header(void)
209 {
210 avio_printf(probe_out, "{");
211 }
212 static void json_print_footer(void)
213 {
214 avio_printf(probe_out, "}\n");
215 }
216
217 static void json_print_array_header(const char *name)
218 {
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");
224 }
225
226 static void json_print_array_footer(const char *name)
227 {
228 avio_printf(probe_out, "\n");
229 AVP_INDENT();
230 avio_printf(probe_out, "]");
231 }
232
233 static void json_print_object_header(const char *name)
234 {
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");
241 }
242
243 static void json_print_object_footer(const char *name)
244 {
245 avio_printf(probe_out, "\n");
246 AVP_INDENT();
247 avio_printf(probe_out, "}");
248 }
249
250 static void json_print_integer(const char *key, int64_t value)
251 {
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);
256 }
257
258 static void json_escape_print(const char *s)
259 {
260 int i = 0;
261 char c = 0;
262
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;
278 }
279 }
280 }
281
282 static void json_print_string(const char *key, const char *value)
283 {
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, '\"');
292 }
293
294 /*
295 * old-style pseudo-INI
296 */
297 static void old_print_object_header(const char *name)
298 {
299 char *str, *p;
300
301 if (!strcmp(name, "tags"))
302 return;
303
304 str = p = av_strdup(name);
305 while (*p) {
306 *p = toupper(*p);
307 p++;
308 }
309
310 avio_printf(probe_out, "[%s]\n", str);
311 av_freep(&str);
312 }
313
314 static void old_print_object_footer(const char *name)
315 {
316 char *str, *p;
317
318 if (!strcmp(name, "tags"))
319 return;
320
321 str = p = av_strdup(name);
322 while (*p) {
323 *p = toupper(*p);
324 p++;
325 }
326
327 avio_printf(probe_out, "[/%s]\n", str);
328 av_freep(&str);
329 }
330
331 static void old_print_string(const char *key, const char *value)
332 {
333 if (!strcmp(octx.prefix[octx.level - 1].name, "tags"))
334 avio_printf(probe_out, "TAG:");
335 ini_print_string(key, value);
336 }
337
338 /*
339 * Simple Formatter for single entries.
340 */
341
342 static void show_format_entry_integer(const char *key, int64_t value)
343 {
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);
348 }
349 }
350
351 static void show_format_entry_string(const char *key, const char *value)
352 {
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);
357 }
358 }
359
360 static void probe_group_enter(const char *name, int type)
361 {
362 int64_t count = -1;
363
364 octx.prefix =
365 av_realloc(octx.prefix, sizeof(ProbeElement) * (octx.level + 1));
366
367 if (!octx.prefix || !name) {
368 fprintf(stderr, "Out of memory\n");
369 exit(1);
370 }
371
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++;
377 }
378
379 octx.prefix[octx.level++] = (ProbeElement){name, type, count, 0};
380 }
381
382 static void probe_group_leave(void)
383 {
384 --octx.level;
385 }
386
387 static void probe_header(void)
388 {
389 if (octx.print_header)
390 octx.print_header();
391 probe_group_enter("root", OBJECT);
392 }
393
394 static void probe_footer(void)
395 {
396 if (octx.print_footer)
397 octx.print_footer();
398 probe_group_leave();
399 }
400
401
402 static void probe_array_header(const char *name)
403 {
404 if (octx.print_array_header)
405 octx.print_array_header(name);
406
407 probe_group_enter(name, ARRAY);
408 }
409
410 static void probe_array_footer(const char *name)
411 {
412 probe_group_leave();
413 if (octx.print_array_footer)
414 octx.print_array_footer(name);
415 }
416
417 static void probe_object_header(const char *name)
418 {
419 if (octx.print_object_header)
420 octx.print_object_header(name);
421
422 probe_group_enter(name, OBJECT);
423 }
424
425 static void probe_object_footer(const char *name)
426 {
427 probe_group_leave();
428 if (octx.print_object_footer)
429 octx.print_object_footer(name);
430 }
431
432 static void probe_int(const char *key, int64_t value)
433 {
434 octx.print_integer(key, value);
435 octx.prefix[octx.level -1].nb_elems++;
436 }
437
438 static void probe_str(const char *key, const char *value)
439 {
440 octx.print_string(key, value);
441 octx.prefix[octx.level -1].nb_elems++;
442 }
443
444 static void probe_dict(AVDictionary *dict, const char *name)
445 {
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);
452 }
453 probe_object_footer(name);
454 }
455
456 static char *value_string(char *buf, int buf_size, double val, const char *unit)
457 {
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;
470
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];
481 }
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 : "");
488 }
489
490 return buf;
491 }
492
493 static char *time_value_string(char *buf, int buf_size, int64_t val,
494 const AVRational *time_base)
495 {
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);
500 }
501
502 return buf;
503 }
504
505 static char *ts_value_string(char *buf, int buf_size, int64_t ts)
506 {
507 if (ts == AV_NOPTS_VALUE) {
508 snprintf(buf, buf_size, "N/A");
509 } else {
510 snprintf(buf, buf_size, "%"PRId64, ts);
511 }
512
513 return buf;
514 }
515
516 static char *rational_string(char *buf, int buf_size, const char *sep,
517 const AVRational *rat)
518 {
519 snprintf(buf, buf_size, "%d%s%d", rat->num, sep, rat->den);
520 return buf;
521 }
522
523 static char *tag_string(char *buf, int buf_size, int tag)
524 {
525 snprintf(buf, buf_size, "0x%04x", tag);
526 return buf;
527 }
528
529
530
531 static const char *media_type_string(enum AVMediaType media_type)
532 {
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";
540 }
541 }
542
543 static void show_packet(AVFormatContext *fmt_ctx, AVPacket *pkt)
544 {
545 char val_str[128];
546 AVStream *st = fmt_ctx->streams[pkt->stream_index];
547
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");
567 }
568
569 static void show_packets(AVFormatContext *fmt_ctx)
570 {
571 AVPacket pkt;
572
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");
578 }
579
580 static void show_stream(AVFormatContext *fmt_ctx, int stream_idx)
581 {
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;
588
589 probe_object_header("stream");
590
591 probe_int("index", stream->index);
592
593 if ((dec_ctx = stream->codec)) {
594 if ((dec = dec_ctx->codec)) {
595 probe_str("codec_name", dec->name);
596 probe_str("codec_long_name", dec->long_name);
597 } else {
598 probe_str("codec_name", "unknown");
599 }
600
601 probe_str("codec_type", media_type_string(dec_ctx->codec_type));
602 probe_str("codec_time_base",
603 rational_string(val_str, sizeof(val_str),
604 "/", &dec_ctx->time_base));
605
606 /* print AVI/FourCC tag */
607 av_get_codec_tag_string(val_str, sizeof(val_str), dec_ctx->codec_tag);
608 probe_str("codec_tag_string", val_str);
609 probe_str("codec_tag", tag_string(val_str, sizeof(val_str),
610 dec_ctx->codec_tag));
611
612 /* print profile, if there is one */
613 if (dec && (profile = av_get_profile_name(dec, dec_ctx->profile)))
614 probe_str("profile", profile);
615
616 switch (dec_ctx->codec_type) {
617 case AVMEDIA_TYPE_VIDEO:
618 probe_int("width", dec_ctx->width);
619 probe_int("height", dec_ctx->height);
620 probe_int("has_b_frames", dec_ctx->has_b_frames);
621 if (dec_ctx->sample_aspect_ratio.num) {
622 probe_str("sample_aspect_ratio",
623 rational_string(val_str, sizeof(val_str), ":",
624 &dec_ctx->sample_aspect_ratio));
625 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
626 dec_ctx->width * dec_ctx->sample_aspect_ratio.num,
627 dec_ctx->height * dec_ctx->sample_aspect_ratio.den,
628 1024*1024);
629 probe_str("display_aspect_ratio",
630 rational_string(val_str, sizeof(val_str), ":",
631 &display_aspect_ratio));
632 }
633 probe_str("pix_fmt",
634 dec_ctx->pix_fmt != PIX_FMT_NONE ? av_pix_fmt_descriptors[dec_ctx->pix_fmt].name
635 : "unknown");
636 probe_int("level", dec_ctx->level);
637 break;
638
639 case AVMEDIA_TYPE_AUDIO:
640 probe_str("sample_rate",
641 value_string(val_str, sizeof(val_str),
642 dec_ctx->sample_rate,
643 unit_hertz_str));
644 probe_int("channels", dec_ctx->channels);
645 probe_int("bits_per_sample",
646 av_get_bits_per_sample(dec_ctx->codec_id));
647 break;
648 }
649 } else {
650 probe_str("codec_type", "unknown");
651 }
652
653 if (fmt_ctx->iformat->flags & AVFMT_SHOW_IDS)
654 probe_int("id", stream->id);
655 probe_str("avg_frame_rate",
656 rational_string(val_str, sizeof(val_str), "/",
657 &stream->avg_frame_rate));
658 probe_str("time_base",
659 rational_string(val_str, sizeof(val_str), "/",
660 &stream->time_base));
661 probe_str("start_time",
662 time_value_string(val_str, sizeof(val_str),
663 stream->start_time, &stream->time_base));
664 probe_str("duration",
665 time_value_string(val_str, sizeof(val_str),
666 stream->duration, &stream->time_base));
667 if (stream->nb_frames)
668 probe_int("nb_frames", stream->nb_frames);
669
670 probe_dict(stream->metadata, "tags");
671
672 probe_object_footer("stream");
673 }
674
675 static void show_format(AVFormatContext *fmt_ctx)
676 {
677 char val_str[128];
678 int64_t size = fmt_ctx->pb ? avio_size(fmt_ctx->pb) : -1;
679
680 probe_object_header("format");
681 probe_str("filename", fmt_ctx->filename);
682 probe_int("nb_streams", fmt_ctx->nb_streams);
683 probe_str("format_name", fmt_ctx->iformat->name);
684 probe_str("format_long_name", fmt_ctx->iformat->long_name);
685 probe_str("start_time",
686 time_value_string(val_str, sizeof(val_str),
687 fmt_ctx->start_time, &AV_TIME_BASE_Q));
688 probe_str("duration",
689 time_value_string(val_str, sizeof(val_str),
690 fmt_ctx->duration, &AV_TIME_BASE_Q));
691 probe_str("size",
692 size >= 0 ? value_string(val_str, sizeof(val_str),
693 size, unit_byte_str)
694 : "unknown");
695 probe_str("bit_rate",
696 value_string(val_str, sizeof(val_str),
697 fmt_ctx->bit_rate, unit_bit_per_second_str));
698
699 probe_dict(fmt_ctx->metadata, "tags");
700
701 probe_object_footer("format");
702 }
703
704 static int open_input_file(AVFormatContext **fmt_ctx_ptr, const char *filename)
705 {
706 int err, i;
707 AVFormatContext *fmt_ctx = NULL;
708 AVDictionaryEntry *t;
709
710 if ((err = avformat_open_input(&fmt_ctx, filename,
711 iformat, &format_opts)) < 0) {
712 print_error(filename, err);
713 return err;
714 }
715 if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
716 av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
717 return AVERROR_OPTION_NOT_FOUND;
718 }
719
720
721 /* fill the streams in the format context */
722 if ((err = avformat_find_stream_info(fmt_ctx, NULL)) < 0) {
723 print_error(filename, err);
724 return err;
725 }
726
727 av_dump_format(fmt_ctx, 0, filename, 0);
728
729 /* bind a decoder to each input stream */
730 for (i = 0; i < fmt_ctx->nb_streams; i++) {
731 AVStream *stream = fmt_ctx->streams[i];
732 AVCodec *codec;
733
734 if (stream->codec->codec_id == AV_CODEC_ID_PROBE) {
735 fprintf(stderr, "Failed to probe codec for input stream %d\n",
736 stream->index);
737 } else if (!(codec = avcodec_find_decoder(stream->codec->codec_id))) {
738 fprintf(stderr,
739 "Unsupported codec with id %d for input stream %d\n",
740 stream->codec->codec_id, stream->index);
741 } else if (avcodec_open2(stream->codec, codec, NULL) < 0) {
742 fprintf(stderr, "Error while opening codec for input stream %d\n",
743 stream->index);
744 }
745 }
746
747 *fmt_ctx_ptr = fmt_ctx;
748 return 0;
749 }
750
751 static void close_input_file(AVFormatContext **ctx_ptr)
752 {
753 int i;
754 AVFormatContext *fmt_ctx = *ctx_ptr;
755
756 /* close decoder for each stream */
757 for (i = 0; i < fmt_ctx->nb_streams; i++) {
758 AVStream *stream = fmt_ctx->streams[i];
759
760 avcodec_close(stream->codec);
761 }
762 avformat_close_input(ctx_ptr);
763 }
764
765 static int probe_file(const char *filename)
766 {
767 AVFormatContext *fmt_ctx;
768 int ret, i;
769
770 if ((ret = open_input_file(&fmt_ctx, filename)))
771 return ret;
772
773 if (do_show_format)
774 show_format(fmt_ctx);
775
776 if (do_show_streams) {
777 probe_array_header("streams");
778 for (i = 0; i < fmt_ctx->nb_streams; i++)
779 show_stream(fmt_ctx, i);
780 probe_array_footer("streams");
781 }
782
783 if (do_show_packets)
784 show_packets(fmt_ctx);
785
786 close_input_file(&fmt_ctx);
787 return 0;
788 }
789
790 static void show_usage(void)
791 {
792 printf("Simple multimedia streams analyzer\n");
793 printf("usage: %s [OPTIONS] [INPUT_FILE]\n", program_name);
794 printf("\n");
795 }
796
797 static int opt_format(const char *opt, const char *arg)
798 {
799 iformat = av_find_input_format(arg);
800 if (!iformat) {
801 fprintf(stderr, "Unknown input format: %s\n", arg);
802 return AVERROR(EINVAL);
803 }
804 return 0;
805 }
806
807 static int opt_output_format(const char *opt, const char *arg)
808 {
809
810 if (!strcmp(arg, "json")) {
811 octx.print_header = json_print_header;
812 octx.print_footer = json_print_footer;
813 octx.print_array_header = json_print_array_header;
814 octx.print_array_footer = json_print_array_footer;
815 octx.print_object_header = json_print_object_header;
816 octx.print_object_footer = json_print_object_footer;
817
818 octx.print_integer = json_print_integer;
819 octx.print_string = json_print_string;
820 } else if (!strcmp(arg, "ini")) {
821 octx.print_header = ini_print_header;
822 octx.print_footer = ini_print_footer;
823 octx.print_array_header = ini_print_array_header;
824 octx.print_object_header = ini_print_object_header;
825
826 octx.print_integer = ini_print_integer;
827 octx.print_string = ini_print_string;
828 } else if (!strcmp(arg, "old")) {
829 octx.print_header = NULL;
830 octx.print_object_header = old_print_object_header;
831 octx.print_object_footer = old_print_object_footer;
832
833 octx.print_string = old_print_string;
834 } else {
835 av_log(NULL, AV_LOG_ERROR, "Unsupported formatter %s\n", arg);
836 return AVERROR(EINVAL);
837 }
838 return 0;
839 }
840
841 static int opt_show_format_entry(const char *opt, const char *arg)
842 {
843 do_show_format = 1;
844 nb_fmt_entries_to_show++;
845 octx.print_header = NULL;
846 octx.print_footer = NULL;
847 octx.print_array_header = NULL;
848 octx.print_array_footer = NULL;
849 octx.print_object_header = NULL;
850 octx.print_object_footer = NULL;
851
852 octx.print_integer = show_format_entry_integer;
853 octx.print_string = show_format_entry_string;
854 av_dict_set(&fmt_entries_to_show, arg, "", 0);
855 return 0;
856 }
857
858 static void opt_input_file(void *optctx, const char *arg)
859 {
860 if (input_filename) {
861 fprintf(stderr,
862 "Argument '%s' provided as input filename, but '%s' was already specified.\n",
863 arg, input_filename);
864 exit(1);
865 }
866 if (!strcmp(arg, "-"))
867 arg = "pipe:";
868 input_filename = arg;
869 }
870
871 void show_help_default(const char *opt, const char *arg)
872 {
873 av_log_set_callback(log_callback_help);
874 show_usage();
875 show_help_options(options, "Main options:", 0, 0);
876 printf("\n");
877 show_help_children(avformat_get_class(), AV_OPT_FLAG_DECODING_PARAM);
878 }
879
880 static void opt_pretty(void)
881 {
882 show_value_unit = 1;
883 use_value_prefix = 1;
884 use_byte_value_binary_prefix = 1;
885 use_value_sexagesimal_format = 1;
886 }
887
888 static const OptionDef real_options[] = {
889 #include "cmdutils_common_opts.h"
890 { "f", HAS_ARG, {(void*)opt_format}, "force format", "format" },
891 { "of", HAS_ARG, {(void*)&opt_output_format}, "output the document either as ini or json", "output_format" },
892 { "unit", OPT_BOOL, {(void*)&show_value_unit},
893 "show unit of the displayed values" },
894 { "prefix", OPT_BOOL, {(void*)&use_value_prefix},
895 "use SI prefixes for the displayed values" },
896 { "byte_binary_prefix", OPT_BOOL, {(void*)&use_byte_value_binary_prefix},
897 "use binary prefixes for byte units" },
898 { "sexagesimal", OPT_BOOL, {(void*)&use_value_sexagesimal_format},
899 "use sexagesimal format HOURS:MM:SS.MICROSECONDS for time units" },
900 { "pretty", 0, {(void*)&opt_pretty},
901 "prettify the format of displayed values, make it more human readable" },
902 { "show_format", OPT_BOOL, {(void*)&do_show_format} , "show format/container info" },
903 { "show_format_entry", HAS_ARG, {(void*)opt_show_format_entry},
904 "show a particular entry from the format/container info", "entry" },
905 { "show_packets", OPT_BOOL, {(void*)&do_show_packets}, "show packets info" },
906 { "show_streams", OPT_BOOL, {(void*)&do_show_streams}, "show streams info" },
907 { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, {(void*)opt_default},
908 "generic catch all option", "" },
909 { NULL, },
910 };
911
912 static int probe_buf_write(void *opaque, uint8_t *buf, int buf_size)
913 {
914 printf("%.*s", buf_size, buf);
915 return 0;
916 }
917
918 #define AVP_BUFFSIZE 4096
919
920 int main(int argc, char **argv)
921 {
922 int ret;
923 uint8_t *buffer = av_malloc(AVP_BUFFSIZE);
924
925 if (!buffer)
926 exit(1);
927
928 options = real_options;
929 parse_loglevel(argc, argv, options);
930 av_register_all();
931 avformat_network_init();
932 init_opts();
933 #if CONFIG_AVDEVICE
934 avdevice_register_all();
935 #endif
936
937 show_banner();
938
939 octx.print_header = ini_print_header;
940 octx.print_footer = ini_print_footer;
941
942 octx.print_array_header = ini_print_array_header;
943 octx.print_object_header = ini_print_object_header;
944
945 octx.print_integer = ini_print_integer;
946 octx.print_string = ini_print_string;
947
948 parse_options(NULL, argc, argv, options, opt_input_file);
949
950 if (!input_filename) {
951 show_usage();
952 fprintf(stderr, "You have to specify one input file.\n");
953 fprintf(stderr,
954 "Use -h to get full help or, even better, run 'man %s'.\n",
955 program_name);
956 exit(1);
957 }
958
959 probe_out = avio_alloc_context(buffer, AVP_BUFFSIZE, 1, NULL, NULL,
960 probe_buf_write, NULL);
961 if (!probe_out)
962 exit(1);
963
964 probe_header();
965 ret = probe_file(input_filename);
966 probe_footer();
967 avio_flush(probe_out);
968 avio_close(probe_out);
969
970 avformat_network_deinit();
971
972 return ret;
973 }