avprobe.c
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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 int do_show_packets = 0;
37 static int do_show_streams = 0;
38 
39 static int show_value_unit = 0;
40 static int use_value_prefix = 0;
43 
44 /* globals */
45 static const OptionDef options[];
46 
47 /* AVprobe context */
48 static const char *input_filename;
50 
51 static const char *binary_unit_prefixes [] = { "", "Ki", "Mi", "Gi", "Ti", "Pi" };
52 static const char *decimal_unit_prefixes[] = { "", "K" , "M" , "G" , "T" , "P" };
53 
54 static const char *unit_second_str = "s" ;
55 static const char *unit_hertz_str = "Hz" ;
56 static const char *unit_byte_str = "byte" ;
57 static const char *unit_bit_per_second_str = "bit/s";
58 
59 void exit_program(int ret)
60 {
61  exit(ret);
62 }
63 
64 static char *value_string(char *buf, int buf_size, double val, const char *unit)
65 {
67  double secs;
68  int hours, mins;
69  secs = val;
70  mins = (int)secs / 60;
71  secs = secs - mins * 60;
72  hours = mins / 60;
73  mins %= 60;
74  snprintf(buf, buf_size, "%d:%02d:%09.6f", hours, mins, secs);
75  } else if (use_value_prefix) {
76  const char *prefix_string;
77  int index;
78 
80  index = (int) (log(val)/log(2)) / 10;
81  index = av_clip(index, 0, FF_ARRAY_ELEMS(binary_unit_prefixes) - 1);
82  val /= pow(2, index * 10);
83  prefix_string = binary_unit_prefixes[index];
84  } else {
85  index = (int) (log10(val)) / 3;
86  index = av_clip(index, 0, FF_ARRAY_ELEMS(decimal_unit_prefixes) - 1);
87  val /= pow(10, index * 3);
88  prefix_string = decimal_unit_prefixes[index];
89  }
90 
91  snprintf(buf, buf_size, "%.3f %s%s", val, prefix_string,
92  show_value_unit ? unit : "");
93  } else {
94  snprintf(buf, buf_size, "%f %s", val, show_value_unit ? unit : "");
95  }
96 
97  return buf;
98 }
99 
100 static char *time_value_string(char *buf, int buf_size, int64_t val,
101  const AVRational *time_base)
102 {
103  if (val == AV_NOPTS_VALUE) {
104  snprintf(buf, buf_size, "N/A");
105  } else {
106  value_string(buf, buf_size, val * av_q2d(*time_base), unit_second_str);
107  }
108 
109  return buf;
110 }
111 
112 static char *ts_value_string (char *buf, int buf_size, int64_t ts)
113 {
114  if (ts == AV_NOPTS_VALUE) {
115  snprintf(buf, buf_size, "N/A");
116  } else {
117  snprintf(buf, buf_size, "%"PRId64, ts);
118  }
119 
120  return buf;
121 }
122 
123 static const char *media_type_string(enum AVMediaType media_type)
124 {
125  switch (media_type) {
126  case AVMEDIA_TYPE_VIDEO: return "video";
127  case AVMEDIA_TYPE_AUDIO: return "audio";
128  case AVMEDIA_TYPE_DATA: return "data";
129  case AVMEDIA_TYPE_SUBTITLE: return "subtitle";
130  case AVMEDIA_TYPE_ATTACHMENT: return "attachment";
131  default: return "unknown";
132  }
133 }
134 
135 static void show_packet(AVFormatContext *fmt_ctx, AVPacket *pkt)
136 {
137  char val_str[128];
138  AVStream *st = fmt_ctx->streams[pkt->stream_index];
139 
140  printf("[PACKET]\n");
141  printf("codec_type=%s\n", media_type_string(st->codec->codec_type));
142  printf("stream_index=%d\n", pkt->stream_index);
143  printf("pts=%s\n", ts_value_string(val_str, sizeof(val_str), pkt->pts));
144  printf("pts_time=%s\n", time_value_string(val_str, sizeof(val_str),
145  pkt->pts, &st->time_base));
146  printf("dts=%s\n", ts_value_string(val_str, sizeof(val_str), pkt->dts));
147  printf("dts_time=%s\n", time_value_string(val_str, sizeof(val_str),
148  pkt->dts, &st->time_base));
149  printf("duration=%s\n", ts_value_string(val_str, sizeof(val_str),
150  pkt->duration));
151  printf("duration_time=%s\n", time_value_string(val_str, sizeof(val_str),
152  pkt->duration,
153  &st->time_base));
154  printf("size=%s\n", value_string(val_str, sizeof(val_str),
155  pkt->size, unit_byte_str));
156  printf("pos=%"PRId64"\n", pkt->pos);
157  printf("flags=%c\n", pkt->flags & AV_PKT_FLAG_KEY ? 'K' : '_');
158  printf("[/PACKET]\n");
159 }
160 
161 static void show_packets(AVFormatContext *fmt_ctx)
162 {
163  AVPacket pkt;
164 
165  av_init_packet(&pkt);
166 
167  while (!av_read_frame(fmt_ctx, &pkt))
168  show_packet(fmt_ctx, &pkt);
169 }
170 
171 static void show_stream(AVFormatContext *fmt_ctx, int stream_idx)
172 {
173  AVStream *stream = fmt_ctx->streams[stream_idx];
174  AVCodecContext *dec_ctx;
175  AVCodec *dec;
176  char val_str[128];
178  AVRational display_aspect_ratio;
179 
180  printf("[STREAM]\n");
181 
182  printf("index=%d\n", stream->index);
183 
184  if ((dec_ctx = stream->codec)) {
185  if ((dec = dec_ctx->codec)) {
186  printf("codec_name=%s\n", dec->name);
187  printf("codec_long_name=%s\n", dec->long_name);
188  } else {
189  printf("codec_name=unknown\n");
190  }
191 
192  printf("codec_type=%s\n", media_type_string(dec_ctx->codec_type));
193  printf("codec_time_base=%d/%d\n",
194  dec_ctx->time_base.num, dec_ctx->time_base.den);
195 
196  /* print AVI/FourCC tag */
197  av_get_codec_tag_string(val_str, sizeof(val_str), dec_ctx->codec_tag);
198  printf("codec_tag_string=%s\n", val_str);
199  printf("codec_tag=0x%04x\n", dec_ctx->codec_tag);
200 
201  switch (dec_ctx->codec_type) {
202  case AVMEDIA_TYPE_VIDEO:
203  printf("width=%d\n", dec_ctx->width);
204  printf("height=%d\n", dec_ctx->height);
205  printf("has_b_frames=%d\n", dec_ctx->has_b_frames);
206  if (dec_ctx->sample_aspect_ratio.num) {
207  printf("sample_aspect_ratio=%d:%d\n",
208  dec_ctx->sample_aspect_ratio.num,
209  dec_ctx->sample_aspect_ratio.den);
210  av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
211  dec_ctx->width * dec_ctx->sample_aspect_ratio.num,
212  dec_ctx->height * dec_ctx->sample_aspect_ratio.den,
213  1024*1024);
214  printf("display_aspect_ratio=%d:%d\n",
215  display_aspect_ratio.num, display_aspect_ratio.den);
216  }
217  printf("pix_fmt=%s\n",
218  dec_ctx->pix_fmt != PIX_FMT_NONE ? av_pix_fmt_descriptors[dec_ctx->pix_fmt].name
219  : "unknown");
220  printf("level=%d\n", dec_ctx->level);
221  break;
222 
223  case AVMEDIA_TYPE_AUDIO:
224  printf("sample_rate=%s\n", value_string(val_str, sizeof(val_str),
225  dec_ctx->sample_rate,
226  unit_hertz_str));
227  printf("channels=%d\n", dec_ctx->channels);
228  printf("bits_per_sample=%d\n",
229  av_get_bits_per_sample(dec_ctx->codec_id));
230  break;
231  }
232  } else {
233  printf("codec_type=unknown\n");
234  }
235 
236  if (fmt_ctx->iformat->flags & AVFMT_SHOW_IDS)
237  printf("id=0x%x\n", stream->id);
238  printf("r_frame_rate=%d/%d\n",
239  stream->r_frame_rate.num, stream->r_frame_rate.den);
240  printf("avg_frame_rate=%d/%d\n",
241  stream->avg_frame_rate.num, stream->avg_frame_rate.den);
242  printf("time_base=%d/%d\n",
243  stream->time_base.num, stream->time_base.den);
244  printf("start_time=%s\n",
245  time_value_string(val_str, sizeof(val_str),
246  stream->start_time, &stream->time_base));
247  printf("duration=%s\n",
248  time_value_string(val_str, sizeof(val_str),
249  stream->duration, &stream->time_base));
250  if (stream->nb_frames)
251  printf("nb_frames=%"PRId64"\n", stream->nb_frames);
252 
253  while ((tag = av_dict_get(stream->metadata, "", tag,
255  printf("TAG:%s=%s\n", tag->key, tag->value);
256 
257  printf("[/STREAM]\n");
258 }
259 
260 static void show_format(AVFormatContext *fmt_ctx)
261 {
263  char val_str[128];
264  int64_t size = fmt_ctx->pb ? avio_size(fmt_ctx->pb) : -1;
265 
266  printf("[FORMAT]\n");
267 
268  printf("filename=%s\n", fmt_ctx->filename);
269  printf("nb_streams=%d\n", fmt_ctx->nb_streams);
270  printf("format_name=%s\n", fmt_ctx->iformat->name);
271  printf("format_long_name=%s\n", fmt_ctx->iformat->long_name);
272  printf("start_time=%s\n",
273  time_value_string(val_str, sizeof(val_str),
274  fmt_ctx->start_time, &AV_TIME_BASE_Q));
275  printf("duration=%s\n",
276  time_value_string(val_str, sizeof(val_str),
277  fmt_ctx->duration, &AV_TIME_BASE_Q));
278  printf("size=%s\n", size >= 0 ? value_string(val_str, sizeof(val_str),
279  size, unit_byte_str)
280  : "unknown");
281  printf("bit_rate=%s\n",
282  value_string(val_str, sizeof(val_str),
283  fmt_ctx->bit_rate, unit_bit_per_second_str));
284 
285  while ((tag = av_dict_get(fmt_ctx->metadata, "", tag,
287  printf("TAG:%s=%s\n", tag->key, tag->value);
288 
289  printf("[/FORMAT]\n");
290 }
291 
292 static int open_input_file(AVFormatContext **fmt_ctx_ptr, const char *filename)
293 {
294  int err, i;
295  AVFormatContext *fmt_ctx = NULL;
297 
298  if ((err = avformat_open_input(&fmt_ctx, filename,
299  iformat, &format_opts)) < 0) {
300  print_error(filename, err);
301  return err;
302  }
304  av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
306  }
307 
308 
309  /* fill the streams in the format context */
310  if ((err = avformat_find_stream_info(fmt_ctx, NULL)) < 0) {
311  print_error(filename, err);
312  return err;
313  }
314 
315  av_dump_format(fmt_ctx, 0, filename, 0);
316 
317  /* bind a decoder to each input stream */
318  for (i = 0; i < fmt_ctx->nb_streams; i++) {
319  AVStream *stream = fmt_ctx->streams[i];
320  AVCodec *codec;
321 
322  if (!(codec = avcodec_find_decoder(stream->codec->codec_id))) {
323  fprintf(stderr,
324  "Unsupported codec with id %d for input stream %d\n",
325  stream->codec->codec_id, stream->index);
326  } else if (avcodec_open2(stream->codec, codec, NULL) < 0) {
327  fprintf(stderr, "Error while opening codec for input stream %d\n",
328  stream->index);
329  }
330  }
331 
332  *fmt_ctx_ptr = fmt_ctx;
333  return 0;
334 }
335 
336 static int probe_file(const char *filename)
337 {
338  AVFormatContext *fmt_ctx;
339  int ret, i;
340 
341  if ((ret = open_input_file(&fmt_ctx, filename)))
342  return ret;
343 
344  if (do_show_packets)
345  show_packets(fmt_ctx);
346 
347  if (do_show_streams)
348  for (i = 0; i < fmt_ctx->nb_streams; i++)
349  show_stream(fmt_ctx, i);
350 
351  if (do_show_format)
352  show_format(fmt_ctx);
353 
354  avformat_close_input(&fmt_ctx);
355  return 0;
356 }
357 
358 static void show_usage(void)
359 {
360  printf("Simple multimedia streams analyzer\n");
361  printf("usage: %s [OPTIONS] [INPUT_FILE]\n", program_name);
362  printf("\n");
363 }
364 
365 static int opt_format(const char *opt, const char *arg)
366 {
367  iformat = av_find_input_format(arg);
368  if (!iformat) {
369  fprintf(stderr, "Unknown input format: %s\n", arg);
370  return AVERROR(EINVAL);
371  }
372  return 0;
373 }
374 
375 static void opt_input_file(void *optctx, const char *arg)
376 {
377  if (input_filename) {
378  fprintf(stderr,
379  "Argument '%s' provided as input filename, but '%s' was already specified.\n",
380  arg, input_filename);
381  exit(1);
382  }
383  if (!strcmp(arg, "-"))
384  arg = "pipe:";
385  input_filename = arg;
386 }
387 
388 static void show_help(void)
389 {
391  show_usage();
392  show_help_options(options, "Main options:\n", 0, 0);
393  printf("\n");
395 }
396 
397 static void opt_pretty(void)
398 {
399  show_value_unit = 1;
400  use_value_prefix = 1;
403 }
404 
405 static const OptionDef options[] = {
406 #include "cmdutils_common_opts.h"
407  { "f", HAS_ARG, {(void*)opt_format}, "force format", "format" },
408  { "unit", OPT_BOOL, {(void*)&show_value_unit},
409  "show unit of the displayed values" },
410  { "prefix", OPT_BOOL, {(void*)&use_value_prefix},
411  "use SI prefixes for the displayed values" },
412  { "byte_binary_prefix", OPT_BOOL, {(void*)&use_byte_value_binary_prefix},
413  "use binary prefixes for byte units" },
414  { "sexagesimal", OPT_BOOL, {(void*)&use_value_sexagesimal_format},
415  "use sexagesimal format HOURS:MM:SS.MICROSECONDS for time units" },
416  { "pretty", 0, {(void*)&opt_pretty},
417  "prettify the format of displayed values, make it more human readable" },
418  { "show_format", OPT_BOOL, {(void*)&do_show_format} , "show format/container info" },
419  { "show_packets", OPT_BOOL, {(void*)&do_show_packets}, "show packets info" },
420  { "show_streams", OPT_BOOL, {(void*)&do_show_streams}, "show streams info" },
421  { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, {(void*)opt_default},
422  "generic catch all option", "" },
423  { NULL, },
424 };
425 
426 int main(int argc, char **argv)
427 {
428  int ret;
429 
430  parse_loglevel(argc, argv, options);
431  av_register_all();
433  init_opts();
434 #if CONFIG_AVDEVICE
436 #endif
437 
438  show_banner();
439  parse_options(NULL, argc, argv, options, opt_input_file);
440 
441  if (!input_filename) {
442  show_usage();
443  fprintf(stderr, "You have to specify one input file.\n");
444  fprintf(stderr,
445  "Use -h to get full help or, even better, run 'man %s'.\n",
446  program_name);
447  exit(1);
448  }
449 
450  ret = probe_file(input_filename);
451 
453 
454  return ret;
455 }