avprobe: correctly set the default formatter
[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 "libavdevice/avdevice.h"
30 #include "cmdutils.h"
31
32 const char program_name[] = "avprobe";
33 const int program_birth_year = 2007;
34
35 static int do_show_format = 0;
36 static AVDictionary *fmt_entries_to_show = NULL;
37 static int nb_fmt_entries_to_show;
38 static int do_show_packets = 0;
39 static int do_show_streams = 0;
40
41 static int show_value_unit = 0;
42 static int use_value_prefix = 0;
43 static int use_byte_value_binary_prefix = 0;
44 static int use_value_sexagesimal_format = 0;
45
46 /* globals */
47 static const OptionDef options[];
48
49 /* AVprobe context */
50 static const char *input_filename;
51 static AVInputFormat *iformat = NULL;
52
53 static const char *const binary_unit_prefixes [] = { "", "Ki", "Mi", "Gi", "Ti", "Pi" };
54 static const char *const decimal_unit_prefixes[] = { "", "K" , "M" , "G" , "T" , "P" };
55
56 static const char unit_second_str[] = "s" ;
57 static const char unit_hertz_str[] = "Hz" ;
58 static const char unit_byte_str[] = "byte" ;
59 static const char unit_bit_per_second_str[] = "bit/s";
60
61 void exit_program(int ret)
62 {
63 av_dict_free(&fmt_entries_to_show);
64 exit(ret);
65 }
66
67 /*
68 * The output is structured in array and objects that might contain items
69 * Array could require the objects within to not be named.
70 * Object could require the items within to be named.
71 *
72 * For flat representation the name of each section is saved on prefix so it
73 * can be rendered in order to represent nested structures (e.g. array of
74 * objects for the packets list).
75 *
76 * Within an array each element can need an unique identifier or an index.
77 *
78 * Nesting level is accounted separately.
79 */
80
81 typedef enum {
82 ARRAY,
83 OBJECT
84 } ProbeElementType;
85
86 typedef struct {
87 const char *name;
88 ProbeElementType type;
89 int64_t index;
90 int64_t nb_elems;
91 } ProbeElement;
92
93 typedef struct {
94 ProbeElement *prefix;
95 int level;
96 void (*print_header)(void);
97 void (*print_footer)(void);
98
99 void (*print_array_header) (const char *name);
100 void (*print_array_footer) (const char *name);
101 void (*print_object_header)(const char *name);
102 void (*print_object_footer)(const char *name);
103
104 void (*print_integer) (const char *key, int64_t value);
105 void (*print_string) (const char *key, const char *value);
106 } OutputContext;
107
108 static AVIOContext *probe_out = NULL;
109 static OutputContext octx;
110 #define AVP_INDENT() avio_printf(probe_out, "%*c", octx.level * 2, ' ')
111
112 /*
113 * Default format, INI
114 *
115 * - all key and values are utf8
116 * - '.' is the subgroup separator
117 * - newlines and the following characters are escaped
118 * - '\' is the escape character
119 * - '#' is the comment
120 * - '=' is the key/value separators
121 * - ':' is not used but usually parsed as key/value separator
122 */
123
124 static void ini_print_header(void)
125 {
126 avio_printf(probe_out, "# avprobe output\n\n");
127 }
128 static void ini_print_footer(void)
129 {
130 avio_w8(probe_out, '\n');
131 }
132
133 static void ini_escape_print(const char *s)
134 {
135 int i = 0;
136 char c = 0;
137
138 while (c = s[i++]) {
139 switch (c) {
140 case '\r': avio_printf(probe_out, "%s", "\\r"); break;
141 case '\n': avio_printf(probe_out, "%s", "\\n"); break;
142 case '\f': avio_printf(probe_out, "%s", "\\f"); break;
143 case '\b': avio_printf(probe_out, "%s", "\\b"); break;
144 case '\t': avio_printf(probe_out, "%s", "\\t"); break;
145 case '\\':
146 case '#' :
147 case '=' :
148 case ':' : avio_w8(probe_out, '\\');
149 default:
150 if ((unsigned char)c < 32)
151 avio_printf(probe_out, "\\x00%02x", c & 0xff);
152 else
153 avio_w8(probe_out, c);
154 break;
155 }
156 }
157 }
158
159 static void ini_print_array_header(const char *name)
160 {
161 if (octx.prefix[octx.level -1].nb_elems)
162 avio_printf(probe_out, "\n");
163 }
164
165 static void ini_print_object_header(const char *name)
166 {
167 int i;
168 ProbeElement *el = octx.prefix + octx.level -1;
169
170 if (el->nb_elems)
171 avio_printf(probe_out, "\n");
172
173 avio_printf(probe_out, "[");
174
175 for (i = 1; i < octx.level; i++) {
176 el = octx.prefix + i;
177 avio_printf(probe_out, "%s.", el->name);
178 if (el->index >= 0)
179 avio_printf(probe_out, "%"PRId64".", el->index);
180 }
181
182 avio_printf(probe_out, "%s", name);
183 if (el && el->type == ARRAY)
184 avio_printf(probe_out, ".%"PRId64"", el->nb_elems);
185 avio_printf(probe_out, "]\n");
186 }
187
188 static void ini_print_integer(const char *key, int64_t value)
189 {
190 ini_escape_print(key);
191 avio_printf(probe_out, "=%"PRId64"\n", value);
192 }
193
194
195 static void ini_print_string(const char *key, const char *value)
196 {
197 ini_escape_print(key);
198 avio_printf(probe_out, "=");
199 ini_escape_print(value);
200 avio_w8(probe_out, '\n');
201 }
202
203 /*
204 * Alternate format, JSON
205 */
206
207 static void json_print_header(void)
208 {
209 avio_printf(probe_out, "{");
210 }
211 static void json_print_footer(void)
212 {
213 avio_printf(probe_out, "}\n");
214 }
215
216 static void json_print_array_header(const char *name)
217 {
218 if (octx.prefix[octx.level -1].nb_elems)
219 avio_printf(probe_out, ",\n");
220 AVP_INDENT();
221 avio_printf(probe_out, "\"%s\" : ", name);
222 avio_printf(probe_out, "[\n");
223 }
224
225 static void json_print_array_footer(const char *name)
226 {
227 avio_printf(probe_out, "\n");
228 AVP_INDENT();
229 avio_printf(probe_out, "]");
230 }
231
232 static void json_print_object_header(const char *name)
233 {
234 if (octx.prefix[octx.level -1].nb_elems)
235 avio_printf(probe_out, ",\n");
236 AVP_INDENT();
237 if (octx.prefix[octx.level -1].type == OBJECT)
238 avio_printf(probe_out, "\"%s\" : ", name);
239 avio_printf(probe_out, "{\n");
240 }
241
242 static void json_print_object_footer(const char *name)
243 {
244 avio_printf(probe_out, "\n");
245 AVP_INDENT();
246 avio_printf(probe_out, "}");
247 }
248
249 static void json_print_integer(const char *key, int64_t value)
250 {
251 if (octx.prefix[octx.level -1].nb_elems)
252 avio_printf(probe_out, ",\n");
253 AVP_INDENT();
254 avio_printf(probe_out, "\"%s\" : %"PRId64"", key, value);
255 }
256
257 static void json_escape_print(const char *s)
258 {
259 int i = 0;
260 char c = 0;
261
262 while (c = s[i++]) {
263 switch (c) {
264 case '\r': avio_printf(probe_out, "%s", "\\r"); break;
265 case '\n': avio_printf(probe_out, "%s", "\\n"); break;
266 case '\f': avio_printf(probe_out, "%s", "\\f"); break;
267 case '\b': avio_printf(probe_out, "%s", "\\b"); break;
268 case '\t': avio_printf(probe_out, "%s", "\\t"); break;
269 case '\\':
270 case '"' : avio_w8(probe_out, '\\');
271 default:
272 if ((unsigned char)c < 32)
273 avio_printf(probe_out, "\\u00%02x", c & 0xff);
274 else
275 avio_w8(probe_out, c);
276 break;
277 }
278 }
279 }
280
281 static void json_print_string(const char *key, const char *value)
282 {
283 if (octx.prefix[octx.level -1].nb_elems)
284 avio_printf(probe_out, ",\n");
285 AVP_INDENT();
286 avio_w8(probe_out, '\"');
287 json_escape_print(key);
288 avio_printf(probe_out, "\" : \"");
289 json_escape_print(value);
290 avio_w8(probe_out, '\"');
291 }
292
293 /*
294 * old-style pseudo-INI
295 */
296 static void old_print_object_header(const char *name)
297 {
298 char *str, *p;
299
300 if (!strcmp(name, "tags"))
301 return;
302
303 str = p = av_strdup(name);
304 while (*p) {
305 *p = toupper(*p);
306 p++;
307 }
308
309 avio_printf(probe_out, "[%s]\n", str);
310 av_freep(&str);
311 }
312
313 static void old_print_object_footer(const char *name)
314 {
315 char *str, *p;
316
317 if (!strcmp(name, "tags"))
318 return;
319
320 str = p = av_strdup(name);
321 while (*p) {
322 *p = toupper(*p);
323 p++;
324 }
325
326 avio_printf(probe_out, "[/%s]\n", str);
327 av_freep(&str);
328 }
329
330 static void old_print_string(const char *key, const char *value)
331 {
332 if (!strcmp(octx.prefix[octx.level - 1].name, "tags"))
333 avio_printf(probe_out, "TAG:");
334 ini_print_string(key, value);
335 }
336
337 /*
338 * Simple Formatter for single entries.
339 */
340
341 static void show_format_entry_integer(const char *key, int64_t value)
342 {
343 if (key && av_dict_get(fmt_entries_to_show, key, NULL, 0)) {
344 if (nb_fmt_entries_to_show > 1)
345 avio_printf(probe_out, "%s=", key);
346 avio_printf(probe_out, "%"PRId64"\n", value);
347 }
348 }
349
350 static void show_format_entry_string(const char *key, const char *value)
351 {
352 if (key && av_dict_get(fmt_entries_to_show, key, NULL, 0)) {
353 if (nb_fmt_entries_to_show > 1)
354 avio_printf(probe_out, "%s=", key);
355 avio_printf(probe_out, "%s\n", value);
356 }
357 }
358
359 static void probe_group_enter(const char *name, int type)
360 {
361 int64_t count = -1;
362
363 octx.prefix =
364 av_realloc(octx.prefix, sizeof(ProbeElement) * (octx.level + 1));
365
366 if (!octx.prefix || !name) {
367 fprintf(stderr, "Out of memory\n");
368 exit(1);
369 }
370
371 if (octx.level) {
372 ProbeElement *parent = octx.prefix + octx.level -1;
373 if (parent->type == ARRAY)
374 count = parent->nb_elems;
375 parent->nb_elems++;
376 }
377
378 octx.prefix[octx.level++] = (ProbeElement){name, type, count, 0};
379 }
380
381 static void probe_group_leave(void)
382 {
383 --octx.level;
384 }
385
386 static void probe_header(void)
387 {
388 if (octx.print_header)
389 octx.print_header();
390 probe_group_enter("root", OBJECT);
391 }
392
393 static void probe_footer(void)
394 {
395 if (octx.print_footer)
396 octx.print_footer();
397 probe_group_leave();
398 }
399
400
401 static void probe_array_header(const char *name)
402 {
403 if (octx.print_array_header)
404 octx.print_array_header(name);
405
406 probe_group_enter(name, ARRAY);
407 }
408
409 static void probe_array_footer(const char *name)
410 {
411 probe_group_leave();
412 if (octx.print_array_footer)
413 octx.print_array_footer(name);
414 }
415
416 static void probe_object_header(const char *name)
417 {
418 if (octx.print_object_header)
419 octx.print_object_header(name);
420
421 probe_group_enter(name, OBJECT);
422 }
423
424 static void probe_object_footer(const char *name)
425 {
426 probe_group_leave();
427 if (octx.print_object_footer)
428 octx.print_object_footer(name);
429 }
430
431 static void probe_int(const char *key, int64_t value)
432 {
433 octx.print_integer(key, value);
434 octx.prefix[octx.level -1].nb_elems++;
435 }
436
437 static void probe_str(const char *key, const char *value)
438 {
439 octx.print_string(key, value);
440 octx.prefix[octx.level -1].nb_elems++;
441 }
442
443 static void probe_dict(AVDictionary *dict, const char *name)
444 {
445 AVDictionaryEntry *entry = NULL;
446 if (!dict)
447 return;
448 probe_object_header(name);
449 while ((entry = av_dict_get(dict, "", entry, AV_DICT_IGNORE_SUFFIX))) {
450 probe_str(entry->key, entry->value);
451 }
452 probe_object_footer(name);
453 }
454
455 static char *value_string(char *buf, int buf_size, double val, const char *unit)
456 {
457 if (unit == unit_second_str && use_value_sexagesimal_format) {
458 double secs;
459 int hours, mins;
460 secs = val;
461 mins = (int)secs / 60;
462 secs = secs - mins * 60;
463 hours = mins / 60;
464 mins %= 60;
465 snprintf(buf, buf_size, "%d:%02d:%09.6f", hours, mins, secs);
466 } else if (use_value_prefix) {
467 const char *prefix_string;
468 int index;
469
470 if (unit == unit_byte_str && use_byte_value_binary_prefix) {
471 index = (int) (log(val)/log(2)) / 10;
472 index = av_clip(index, 0, FF_ARRAY_ELEMS(binary_unit_prefixes) - 1);
473 val /= pow(2, index * 10);
474 prefix_string = binary_unit_prefixes[index];
475 } else {
476 index = (int) (log10(val)) / 3;
477 index = av_clip(index, 0, FF_ARRAY_ELEMS(decimal_unit_prefixes) - 1);
478 val /= pow(10, index * 3);
479 prefix_string = decimal_unit_prefixes[index];
480 }
481 snprintf(buf, buf_size, "%.*f%s%s",
482 index ? 3 : 0, val,
483 prefix_string,
484 show_value_unit ? unit : "");
485 } else {
486 snprintf(buf, buf_size, "%f%s", val, show_value_unit ? unit : "");
487 }
488
489 return buf;
490 }
491
492 static char *time_value_string(char *buf, int buf_size, int64_t val,
493 const AVRational *time_base)
494 {
495 if (val == AV_NOPTS_VALUE) {
496 snprintf(buf, buf_size, "N/A");
497 } else {
498 value_string(buf, buf_size, val * av_q2d(*time_base), unit_second_str);
499 }
500
501 return buf;
502 }
503
504 static char *ts_value_string(char *buf, int buf_size, int64_t ts)
505 {
506 if (ts == AV_NOPTS_VALUE) {
507 snprintf(buf, buf_size, "N/A");
508 } else {
509 snprintf(buf, buf_size, "%"PRId64, ts);
510 }
511
512 return buf;
513 }
514
515 static char *rational_string(char *buf, int buf_size, const char *sep,
516 const AVRational *rat)
517 {
518 snprintf(buf, buf_size, "%d%s%d", rat->num, sep, rat->den);
519 return buf;
520 }
521
522 static char *tag_string(char *buf, int buf_size, int tag)
523 {
524 snprintf(buf, buf_size, "0x%04x", tag);
525 return buf;
526 }
527
528
529
530 static const char *media_type_string(enum AVMediaType media_type)
531 {
532 switch (media_type) {
533 case AVMEDIA_TYPE_VIDEO: return "video";
534 case AVMEDIA_TYPE_AUDIO: return "audio";
535 case AVMEDIA_TYPE_DATA: return "data";
536 case AVMEDIA_TYPE_SUBTITLE: return "subtitle";
537 case AVMEDIA_TYPE_ATTACHMENT: return "attachment";
538 default: return "unknown";
539 }
540 }
541
542 static void show_packet(AVFormatContext *fmt_ctx, AVPacket *pkt)
543 {
544 char val_str[128];
545 AVStream *st = fmt_ctx->streams[pkt->stream_index];
546
547 probe_object_header("packet");
548 probe_str("codec_type", media_type_string(st->codec->codec_type));
549 probe_int("stream_index", pkt->stream_index);
550 probe_str("pts", ts_value_string(val_str, sizeof(val_str), pkt->pts));
551 probe_str("pts_time", time_value_string(val_str, sizeof(val_str),
552 pkt->pts, &st->time_base));
553 probe_str("dts", ts_value_string(val_str, sizeof(val_str), pkt->dts));
554 probe_str("dts_time", time_value_string(val_str, sizeof(val_str),
555 pkt->dts, &st->time_base));
556 probe_str("duration", ts_value_string(val_str, sizeof(val_str),
557 pkt->duration));
558 probe_str("duration_time", time_value_string(val_str, sizeof(val_str),
559 pkt->duration,
560 &st->time_base));
561 probe_str("size", value_string(val_str, sizeof(val_str),
562 pkt->size, unit_byte_str));
563 probe_int("pos", pkt->pos);
564 probe_str("flags", pkt->flags & AV_PKT_FLAG_KEY ? "K" : "_");
565 probe_object_footer("packet");
566 }
567
568 static void show_packets(AVFormatContext *fmt_ctx)
569 {
570 AVPacket pkt;
571
572 av_init_packet(&pkt);
573 probe_array_header("packets");
574 while (!av_read_frame(fmt_ctx, &pkt))
575 show_packet(fmt_ctx, &pkt);
576 probe_array_footer("packets");
577 }
578
579 static void show_stream(AVFormatContext *fmt_ctx, int stream_idx)
580 {
581 AVStream *stream = fmt_ctx->streams[stream_idx];
582 AVCodecContext *dec_ctx;
583 AVCodec *dec;
584 const char *profile;
585 char val_str[128];
586 AVRational display_aspect_ratio;
587
588 probe_object_header("stream");
589
590 probe_int("index", stream->index);
591
592 if ((dec_ctx = stream->codec)) {
593 if ((dec = dec_ctx->codec)) {
594 probe_str("codec_name", dec->name);
595 probe_str("codec_long_name", dec->long_name);
596 } else {
597 probe_str("codec_name", "unknown");
598 }
599
600 probe_str("codec_type", media_type_string(dec_ctx->codec_type));
601 probe_str("codec_time_base",
602 rational_string(val_str, sizeof(val_str),
603 "/", &dec_ctx->time_base));
604
605 /* print AVI/FourCC tag */
606 av_get_codec_tag_string(val_str, sizeof(val_str), dec_ctx->codec_tag);
607 probe_str("codec_tag_string", val_str);
608 probe_str("codec_tag", tag_string(val_str, sizeof(val_str),
609 dec_ctx->codec_tag));
610
611 /* print profile, if there is one */
612 if (dec && (profile = av_get_profile_name(dec, dec_ctx->profile)))
613 probe_str("profile", profile);
614
615 switch (dec_ctx->codec_type) {
616 case AVMEDIA_TYPE_VIDEO:
617 probe_int("width", dec_ctx->width);
618 probe_int("height", dec_ctx->height);
619 probe_int("has_b_frames", dec_ctx->has_b_frames);
620 if (dec_ctx->sample_aspect_ratio.num) {
621 probe_str("sample_aspect_ratio",
622 rational_string(val_str, sizeof(val_str), ":",
623 &dec_ctx->sample_aspect_ratio));
624 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
625 dec_ctx->width * dec_ctx->sample_aspect_ratio.num,
626 dec_ctx->height * dec_ctx->sample_aspect_ratio.den,
627 1024*1024);
628 probe_str("display_aspect_ratio",
629 rational_string(val_str, sizeof(val_str), ":",
630 &display_aspect_ratio));
631 }
632 probe_str("pix_fmt",
633 dec_ctx->pix_fmt != PIX_FMT_NONE ? av_pix_fmt_descriptors[dec_ctx->pix_fmt].name
634 : "unknown");
635 probe_int("level", dec_ctx->level);
636 break;
637
638 case AVMEDIA_TYPE_AUDIO:
639 probe_str("sample_rate",
640 value_string(val_str, sizeof(val_str),
641 dec_ctx->sample_rate,
642 unit_hertz_str));
643 probe_int("channels", dec_ctx->channels);
644 probe_int("bits_per_sample",
645 av_get_bits_per_sample(dec_ctx->codec_id));
646 break;
647 }
648 } else {
649 probe_str("codec_type", "unknown");
650 }
651
652 if (fmt_ctx->iformat->flags & AVFMT_SHOW_IDS)
653 probe_int("id", stream->id);
654 probe_str("r_frame_rate",
655 rational_string(val_str, sizeof(val_str), "/",
656 &stream->r_frame_rate));
657 probe_str("avg_frame_rate",
658 rational_string(val_str, sizeof(val_str), "/",
659 &stream->avg_frame_rate));
660 probe_str("time_base",
661 rational_string(val_str, sizeof(val_str), "/",
662 &stream->time_base));
663 probe_str("start_time",
664 time_value_string(val_str, sizeof(val_str),
665 stream->start_time, &stream->time_base));
666 probe_str("duration",
667 time_value_string(val_str, sizeof(val_str),
668 stream->duration, &stream->time_base));
669 if (stream->nb_frames)
670 probe_int("nb_frames", stream->nb_frames);
671
672 probe_dict(stream->metadata, "tags");
673
674 probe_object_footer("stream");
675 }
676
677 static void show_format(AVFormatContext *fmt_ctx)
678 {
679 char val_str[128];
680 int64_t size = fmt_ctx->pb ? avio_size(fmt_ctx->pb) : -1;
681
682 probe_object_header("format");
683 probe_str("filename", fmt_ctx->filename);
684 probe_int("nb_streams", fmt_ctx->nb_streams);
685 probe_str("format_name", fmt_ctx->iformat->name);
686 probe_str("format_long_name", fmt_ctx->iformat->long_name);
687 probe_str("start_time",
688 time_value_string(val_str, sizeof(val_str),
689 fmt_ctx->start_time, &AV_TIME_BASE_Q));
690 probe_str("duration",
691 time_value_string(val_str, sizeof(val_str),
692 fmt_ctx->duration, &AV_TIME_BASE_Q));
693 probe_str("size",
694 size >= 0 ? value_string(val_str, sizeof(val_str),
695 size, unit_byte_str)
696 : "unknown");
697 probe_str("bit_rate",
698 value_string(val_str, sizeof(val_str),
699 fmt_ctx->bit_rate, unit_bit_per_second_str));
700
701 probe_dict(fmt_ctx->metadata, "tags");
702
703 probe_object_footer("format");
704 }
705
706 static int open_input_file(AVFormatContext **fmt_ctx_ptr, const char *filename)
707 {
708 int err, i;
709 AVFormatContext *fmt_ctx = NULL;
710 AVDictionaryEntry *t;
711
712 if ((err = avformat_open_input(&fmt_ctx, filename,
713 iformat, &format_opts)) < 0) {
714 print_error(filename, err);
715 return err;
716 }
717 if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
718 av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
719 return AVERROR_OPTION_NOT_FOUND;
720 }
721
722
723 /* fill the streams in the format context */
724 if ((err = avformat_find_stream_info(fmt_ctx, NULL)) < 0) {
725 print_error(filename, err);
726 return err;
727 }
728
729 av_dump_format(fmt_ctx, 0, filename, 0);
730
731 /* bind a decoder to each input stream */
732 for (i = 0; i < fmt_ctx->nb_streams; i++) {
733 AVStream *stream = fmt_ctx->streams[i];
734 AVCodec *codec;
735
736 if (!(codec = avcodec_find_decoder(stream->codec->codec_id))) {
737 fprintf(stderr,
738 "Unsupported codec with id %d for input stream %d\n",
739 stream->codec->codec_id, stream->index);
740 } else if (avcodec_open2(stream->codec, codec, NULL) < 0) {
741 fprintf(stderr, "Error while opening codec for input stream %d\n",
742 stream->index);
743 }
744 }
745
746 *fmt_ctx_ptr = fmt_ctx;
747 return 0;
748 }
749
750 static void close_input_file(AVFormatContext **ctx_ptr)
751 {
752 int i;
753 AVFormatContext *fmt_ctx = *ctx_ptr;
754
755 /* close decoder for each stream */
756 for (i = 0; i < fmt_ctx->nb_streams; i++) {
757 AVStream *stream = fmt_ctx->streams[i];
758
759 avcodec_close(stream->codec);
760 }
761 avformat_close_input(ctx_ptr);
762 }
763
764 static int probe_file(const char *filename)
765 {
766 AVFormatContext *fmt_ctx;
767 int ret, i;
768
769 if ((ret = open_input_file(&fmt_ctx, filename)))
770 return ret;
771
772 if (do_show_format)
773 show_format(fmt_ctx);
774
775 if (do_show_streams) {
776 probe_array_header("streams");
777 for (i = 0; i < fmt_ctx->nb_streams; i++)
778 show_stream(fmt_ctx, i);
779 probe_array_footer("streams");
780 }
781
782 if (do_show_packets)
783 show_packets(fmt_ctx);
784
785 close_input_file(&fmt_ctx);
786 return 0;
787 }
788
789 static void show_usage(void)
790 {
791 printf("Simple multimedia streams analyzer\n");
792 printf("usage: %s [OPTIONS] [INPUT_FILE]\n", program_name);
793 printf("\n");
794 }
795
796 static int opt_format(const char *opt, const char *arg)
797 {
798 iformat = av_find_input_format(arg);
799 if (!iformat) {
800 fprintf(stderr, "Unknown input format: %s\n", arg);
801 return AVERROR(EINVAL);
802 }
803 return 0;
804 }
805
806 static int opt_output_format(const char *opt, const char *arg)
807 {
808
809 if (!strcmp(arg, "json")) {
810 octx.print_header = json_print_header;
811 octx.print_footer = json_print_footer;
812 octx.print_array_header = json_print_array_header;
813 octx.print_array_footer = json_print_array_footer;
814 octx.print_object_header = json_print_object_header;
815 octx.print_object_footer = json_print_object_footer;
816
817 octx.print_integer = json_print_integer;
818 octx.print_string = json_print_string;
819 } else if (!strcmp(arg, "ini")) {
820 octx.print_header = ini_print_header;
821 octx.print_footer = ini_print_footer;
822 octx.print_array_header = ini_print_array_header;
823 octx.print_object_header = ini_print_object_header;
824
825 octx.print_integer = ini_print_integer;
826 octx.print_string = ini_print_string;
827 } else if (!strcmp(arg, "old")) {
828 octx.print_header = NULL;
829 octx.print_object_header = old_print_object_header;
830 octx.print_object_footer = old_print_object_footer;
831
832 octx.print_string = old_print_string;
833 } else {
834 av_log(NULL, AV_LOG_ERROR, "Unsupported formatter %s\n", arg);
835 return AVERROR(EINVAL);
836 }
837 return 0;
838 }
839
840 static int opt_show_format_entry(const char *opt, const char *arg)
841 {
842 do_show_format = 1;
843 nb_fmt_entries_to_show++;
844 octx.print_header = NULL;
845 octx.print_footer = NULL;
846 octx.print_array_header = NULL;
847 octx.print_array_footer = NULL;
848 octx.print_object_header = NULL;
849 octx.print_object_footer = NULL;
850
851 octx.print_integer = show_format_entry_integer;
852 octx.print_string = show_format_entry_string;
853 av_dict_set(&fmt_entries_to_show, arg, "", 0);
854 return 0;
855 }
856
857 static void opt_input_file(void *optctx, const char *arg)
858 {
859 if (input_filename) {
860 fprintf(stderr,
861 "Argument '%s' provided as input filename, but '%s' was already specified.\n",
862 arg, input_filename);
863 exit(1);
864 }
865 if (!strcmp(arg, "-"))
866 arg = "pipe:";
867 input_filename = arg;
868 }
869
870 static void show_help(void)
871 {
872 av_log_set_callback(log_callback_help);
873 show_usage();
874 show_help_options(options, "Main options:\n", 0, 0);
875 printf("\n");
876 show_help_children(avformat_get_class(), AV_OPT_FLAG_DECODING_PARAM);
877 }
878
879 static void opt_pretty(void)
880 {
881 show_value_unit = 1;
882 use_value_prefix = 1;
883 use_byte_value_binary_prefix = 1;
884 use_value_sexagesimal_format = 1;
885 }
886
887 static const OptionDef options[] = {
888 #include "cmdutils_common_opts.h"
889 { "f", HAS_ARG, {(void*)opt_format}, "force format", "format" },
890 { "of", HAS_ARG, {(void*)&opt_output_format}, "output the document either as ini or json", "output_format" },
891 { "unit", OPT_BOOL, {(void*)&show_value_unit},
892 "show unit of the displayed values" },
893 { "prefix", OPT_BOOL, {(void*)&use_value_prefix},
894 "use SI prefixes for the displayed values" },
895 { "byte_binary_prefix", OPT_BOOL, {(void*)&use_byte_value_binary_prefix},
896 "use binary prefixes for byte units" },
897 { "sexagesimal", OPT_BOOL, {(void*)&use_value_sexagesimal_format},
898 "use sexagesimal format HOURS:MM:SS.MICROSECONDS for time units" },
899 { "pretty", 0, {(void*)&opt_pretty},
900 "prettify the format of displayed values, make it more human readable" },
901 { "show_format", OPT_BOOL, {(void*)&do_show_format} , "show format/container info" },
902 { "show_format_entry", HAS_ARG, {(void*)opt_show_format_entry},
903 "show a particular entry from the format/container info", "entry" },
904 { "show_packets", OPT_BOOL, {(void*)&do_show_packets}, "show packets info" },
905 { "show_streams", OPT_BOOL, {(void*)&do_show_streams}, "show streams info" },
906 { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, {(void*)opt_default},
907 "generic catch all option", "" },
908 { NULL, },
909 };
910
911 static int probe_buf_write(void *opaque, uint8_t *buf, int buf_size)
912 {
913 printf("%.*s", buf_size, buf);
914 return 0;
915 }
916
917 #define AVP_BUFFSIZE 4096
918
919 int main(int argc, char **argv)
920 {
921 int ret;
922 uint8_t *buffer = av_malloc(AVP_BUFFSIZE);
923
924 if (!buffer)
925 exit(1);
926
927 parse_loglevel(argc, argv, options);
928 av_register_all();
929 avformat_network_init();
930 init_opts();
931 #if CONFIG_AVDEVICE
932 avdevice_register_all();
933 #endif
934
935 show_banner();
936
937 octx.print_header = ini_print_header;
938 octx.print_footer = ini_print_footer;
939
940 octx.print_array_header = ini_print_array_header;
941 octx.print_object_header = ini_print_object_header;
942
943 octx.print_integer = ini_print_integer;
944 octx.print_string = ini_print_string;
945
946 parse_options(NULL, argc, argv, options, opt_input_file);
947
948 if (!input_filename) {
949 show_usage();
950 fprintf(stderr, "You have to specify one input file.\n");
951 fprintf(stderr,
952 "Use -h to get full help or, even better, run 'man %s'.\n",
953 program_name);
954 exit(1);
955 }
956
957 probe_out = avio_alloc_context(buffer, AVP_BUFFSIZE, 1, NULL, NULL,
958 probe_buf_write, NULL);
959 if (!probe_out)
960 exit(1);
961
962 probe_header();
963 ret = probe_file(input_filename);
964 probe_footer();
965 avio_flush(probe_out);
966 avio_close(probe_out);
967
968 avformat_network_deinit();
969
970 return ret;
971 }