ffprobe.c

   1 /*
   2  * ffprobe : 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[] = "ffprobe";
  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;
  41 static int use_byte_value_binary_prefix = 0;
  42 static int use_value_sexagesimal_format = 0;
  43
  44 /* globals */
  45 static const OptionDef options[];
  46
  47 /* FFprobe context */
  48 static const char *input_filename;
  49 static AVInputFormat *iformat = NULL;
  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 static char *value_string(char *buf, int buf_size, double val, const char *unit)
  60 {
  61     if (unit == unit_second_str && use_value_sexagesimal_format) {
  62         double secs;
  63         int hours, mins;
  64         secs  = val;
  65         mins  = (int)secs / 60;
  66         secs  = secs - mins * 60;
  67         hours = mins / 60;
  68         mins %= 60;
  69         snprintf(buf, buf_size, "%d:%02d:%09.6f", hours, mins, secs);
  70     } else if (use_value_prefix) {
  71         const char *prefix_string;
  72         int index;
  73
  74         if (unit == unit_byte_str && use_byte_value_binary_prefix) {
  75             index = (int) (log(val)/log(2)) / 10;
  76             index = av_clip(index, 0, FF_ARRAY_ELEMS(binary_unit_prefixes) -1);
  77             val /= pow(2, index*10);
  78             prefix_string = binary_unit_prefixes[index];
  79         } else {
  80             index = (int) (log10(val)) / 3;
  81             index = av_clip(index, 0, FF_ARRAY_ELEMS(decimal_unit_prefixes) -1);
  82             val /= pow(10, index*3);
  83             prefix_string = decimal_unit_prefixes[index];
  84         }
  85
  86         snprintf(buf, buf_size, "%.3f %s%s", val, prefix_string, show_value_unit ? unit : "");
  87     } else {
  88         snprintf(buf, buf_size, "%f %s", val, show_value_unit ? unit : "");
  89     }
  90
  91     return buf;
  92 }
  93
  94 static char *time_value_string(char *buf, int buf_size, int64_t val, const AVRational *time_base)
  95 {
  96     if (val == AV_NOPTS_VALUE) {
  97         snprintf(buf, buf_size, "N/A");
  98     } else {
  99         value_string(buf, buf_size, val * av_q2d(*time_base), unit_second_str);
 100     }
 101
 102     return buf;
 103 }
 104
 105 static char *ts_value_string (char *buf, int buf_size, int64_t ts)
 106 {
 107     if (ts == AV_NOPTS_VALUE) {
 108         snprintf(buf, buf_size, "N/A");
 109     } else {
 110         snprintf(buf, buf_size, "%"PRId64, ts);
 111     }
 112
 113     return buf;
 114 }
 115
 116 static const char *media_type_string(enum AVMediaType media_type)
 117 {
 118     switch (media_type) {
 119     case AVMEDIA_TYPE_VIDEO:      return "video";
 120     case AVMEDIA_TYPE_AUDIO:      return "audio";
 121     case AVMEDIA_TYPE_DATA:       return "data";
 122     case AVMEDIA_TYPE_SUBTITLE:   return "subtitle";
 123     case AVMEDIA_TYPE_ATTACHMENT: return "attachment";
 124     default:                      return "unknown";
 125     }
 126 }
 127
 128 static void show_packet(AVFormatContext *fmt_ctx, AVPacket *pkt)
 129 {
 130     char val_str[128];
 131     AVStream *st = fmt_ctx->streams[pkt->stream_index];
 132
 133     printf("[PACKET]\n");
 134     printf("codec_type=%s\n"   , media_type_string(st->codec->codec_type));
 135     printf("stream_index=%d\n" , pkt->stream_index);
 136     printf("pts=%s\n"          , ts_value_string  (val_str, sizeof(val_str), pkt->pts));
 137     printf("pts_time=%s\n"     , time_value_string(val_str, sizeof(val_str), pkt->pts, &st->time_base));
 138     printf("dts=%s\n"          , ts_value_string  (val_str, sizeof(val_str), pkt->dts));
 139     printf("dts_time=%s\n"     , time_value_string(val_str, sizeof(val_str), pkt->dts, &st->time_base));
 140     printf("duration=%s\n"     , ts_value_string  (val_str, sizeof(val_str), pkt->duration));
 141     printf("duration_time=%s\n", time_value_string(val_str, sizeof(val_str), pkt->duration, &st->time_base));
 142     printf("size=%s\n"         , value_string     (val_str, sizeof(val_str), pkt->size, unit_byte_str));
 143     printf("pos=%"PRId64"\n"   , pkt->pos);
 144     printf("flags=%c\n"        , pkt->flags & AV_PKT_FLAG_KEY ? 'K' : '_');
 145     printf("[/PACKET]\n");
 146 }
 147
 148 static void show_packets(AVFormatContext *fmt_ctx)
 149 {
 150     AVPacket pkt;
 151
 152     av_init_packet(&pkt);
 153
 154     while (!av_read_frame(fmt_ctx, &pkt))
 155         show_packet(fmt_ctx, &pkt);
 156 }
 157
 158 static void show_stream(AVFormatContext *fmt_ctx, int stream_idx)
 159 {
 160     AVStream *stream = fmt_ctx->streams[stream_idx];
 161     AVCodecContext *dec_ctx;
 162     AVCodec *dec;
 163     char val_str[128];
 164     AVDictionaryEntry *tag = NULL;
 165     AVRational display_aspect_ratio;
 166
 167     printf("[STREAM]\n");
 168
 169     printf("index=%d\n",        stream->index);
 170
 171     if ((dec_ctx = stream->codec)) {
 172         if ((dec = dec_ctx->codec)) {
 173             printf("codec_name=%s\n",         dec->name);
 174             printf("codec_long_name=%s\n",    dec->long_name);
 175         } else {
 176             printf("codec_name=unknown\n");
 177         }
 178
 179         printf("codec_type=%s\n",         media_type_string(dec_ctx->codec_type));
 180         printf("codec_time_base=%d/%d\n", dec_ctx->time_base.num, dec_ctx->time_base.den);
 181
 182         /* print AVI/FourCC tag */
 183         av_get_codec_tag_string(val_str, sizeof(val_str), dec_ctx->codec_tag);
 184         printf("codec_tag_string=%s\n", val_str);
 185         printf("codec_tag=0x%04x\n", dec_ctx->codec_tag);
 186
 187         switch (dec_ctx->codec_type) {
 188         case AVMEDIA_TYPE_VIDEO:
 189             printf("width=%d\n",                   dec_ctx->width);
 190             printf("height=%d\n",                  dec_ctx->height);
 191             printf("has_b_frames=%d\n",            dec_ctx->has_b_frames);
 192             if (dec_ctx->sample_aspect_ratio.num) {
 193                 printf("sample_aspect_ratio=%d:%d\n", dec_ctx->sample_aspect_ratio.num,
 194                                                       dec_ctx->sample_aspect_ratio.den);
 195                 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
 196                           dec_ctx->width  * dec_ctx->sample_aspect_ratio.num,
 197                           dec_ctx->height * dec_ctx->sample_aspect_ratio.den,
 198                           1024*1024);
 199                 printf("display_aspect_ratio=%d:%d\n", display_aspect_ratio.num,
 200                                                        display_aspect_ratio.den);
 201             }
 202             printf("pix_fmt=%s\n",                 dec_ctx->pix_fmt != PIX_FMT_NONE ?
 203                    av_pix_fmt_descriptors[dec_ctx->pix_fmt].name : "unknown");
 204             break;
 205
 206         case AVMEDIA_TYPE_AUDIO:
 207             printf("sample_rate=%s\n",             value_string(val_str, sizeof(val_str),
 208                                                                 dec_ctx->sample_rate,
 209                                                                 unit_hertz_str));
 210             printf("channels=%d\n",                dec_ctx->channels);
 211             printf("bits_per_sample=%d\n",         av_get_bits_per_sample(dec_ctx->codec_id));
 212             break;
 213         }
 214     } else {
 215         printf("codec_type=unknown\n");
 216     }
 217
 218     if (fmt_ctx->iformat->flags & AVFMT_SHOW_IDS)
 219         printf("id=0x%x\n", stream->id);
 220     printf("r_frame_rate=%d/%d\n",         stream->r_frame_rate.num,   stream->r_frame_rate.den);
 221     printf("avg_frame_rate=%d/%d\n",       stream->avg_frame_rate.num, stream->avg_frame_rate.den);
 222     printf("time_base=%d/%d\n",            stream->time_base.num,      stream->time_base.den);
 223     printf("start_time=%s\n",   time_value_string(val_str, sizeof(val_str), stream->start_time,
 224                                                   &stream->time_base));
 225     printf("duration=%s\n",     time_value_string(val_str, sizeof(val_str), stream->duration,
 226                                                   &stream->time_base));
 227     if (stream->nb_frames)
 228         printf("nb_frames=%"PRId64"\n",    stream->nb_frames);
 229
 230     while ((tag = av_dict_get(stream->metadata, "", tag, AV_DICT_IGNORE_SUFFIX)))
 231         printf("TAG:%s=%s\n", tag->key, tag->value);
 232
 233     printf("[/STREAM]\n");
 234 }
 235
 236 static void show_format(AVFormatContext *fmt_ctx)
 237 {
 238     AVDictionaryEntry *tag = NULL;
 239     char val_str[128];
 240
 241     printf("[FORMAT]\n");
 242
 243     printf("filename=%s\n",         fmt_ctx->filename);
 244     printf("nb_streams=%d\n",       fmt_ctx->nb_streams);
 245     printf("format_name=%s\n",      fmt_ctx->iformat->name);
 246     printf("format_long_name=%s\n", fmt_ctx->iformat->long_name);
 247     printf("start_time=%s\n",       time_value_string(val_str, sizeof(val_str), fmt_ctx->start_time,
 248                                                       &AV_TIME_BASE_Q));
 249     printf("duration=%s\n",         time_value_string(val_str, sizeof(val_str), fmt_ctx->duration,
 250                                                       &AV_TIME_BASE_Q));
 251     printf("size=%s\n",             value_string(val_str, sizeof(val_str), fmt_ctx->file_size,
 252                                                  unit_byte_str));
 253     printf("bit_rate=%s\n",         value_string(val_str, sizeof(val_str), fmt_ctx->bit_rate,
 254                                                  unit_bit_per_second_str));
 255
 256     while ((tag = av_dict_get(fmt_ctx->metadata, "", tag, AV_DICT_IGNORE_SUFFIX)))
 257         printf("TAG:%s=%s\n", tag->key, tag->value);
 258
 259     printf("[/FORMAT]\n");
 260 }
 261
 262 static int open_input_file(AVFormatContext **fmt_ctx_ptr, const char *filename)
 263 {
 264     int err, i;
 265     AVFormatContext *fmt_ctx = NULL;
 266     AVDictionaryEntry *t;
 267
 268     if ((err = avformat_open_input(&fmt_ctx, filename, iformat, &format_opts)) < 0) {
 269         print_error(filename, err);
 270         return err;
 271     }
 272     if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
 273         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
 274         return AVERROR_OPTION_NOT_FOUND;
 275     }
 276
 277
 278     /* fill the streams in the format context */
 279     if ((err = av_find_stream_info(fmt_ctx)) < 0) {
 280         print_error(filename, err);
 281         return err;
 282     }
 283
 284     av_dump_format(fmt_ctx, 0, filename, 0);
 285
 286     /* bind a decoder to each input stream */
 287     for (i = 0; i < fmt_ctx->nb_streams; i++) {
 288         AVStream *stream = fmt_ctx->streams[i];
 289         AVCodec *codec;
 290
 291         if (!(codec = avcodec_find_decoder(stream->codec->codec_id))) {
 292             fprintf(stderr, "Unsupported codec with id %d for input stream %d\n",
 293                     stream->codec->codec_id, stream->index);
 294         } else if (avcodec_open2(stream->codec, codec, NULL) < 0) {
 295             fprintf(stderr, "Error while opening codec for input stream %d\n",
 296                     stream->index);
 297         }
 298     }
 299
 300     *fmt_ctx_ptr = fmt_ctx;
 301     return 0;
 302 }
 303
 304 static int probe_file(const char *filename)
 305 {
 306     AVFormatContext *fmt_ctx;
 307     int ret, i;
 308
 309     if ((ret = open_input_file(&fmt_ctx, filename)))
 310         return ret;
 311
 312     if (do_show_packets)
 313         show_packets(fmt_ctx);
 314
 315     if (do_show_streams)
 316         for (i = 0; i < fmt_ctx->nb_streams; i++)
 317             show_stream(fmt_ctx, i);
 318
 319     if (do_show_format)
 320         show_format(fmt_ctx);
 321
 322     av_close_input_file(fmt_ctx);
 323     return 0;
 324 }
 325
 326 static void show_usage(void)
 327 {
 328     printf("Simple multimedia streams analyzer\n");
 329     printf("usage: ffprobe [OPTIONS] [INPUT_FILE]\n");
 330     printf("\n");
 331 }
 332
 333 static int opt_format(const char *opt, const char *arg)
 334 {
 335     iformat = av_find_input_format(arg);
 336     if (!iformat) {
 337         fprintf(stderr, "Unknown input format: %s\n", arg);
 338         return AVERROR(EINVAL);
 339     }
 340     return 0;
 341 }
 342
 343 static void opt_input_file(const char *arg)
 344 {
 345     if (input_filename) {
 346         fprintf(stderr, "Argument '%s' provided as input filename, but '%s' was already specified.\n",
 347                 arg, input_filename);
 348         exit(1);
 349     }
 350     if (!strcmp(arg, "-"))
 351         arg = "pipe:";
 352     input_filename = arg;
 353 }
 354
 355 static void show_help(void)
 356 {
 357     av_log_set_callback(log_callback_help);
 358     show_usage();
 359     show_help_options(options, "Main options:\n", 0, 0);
 360     printf("\n");
 361     av_opt_show2(avformat_opts, NULL,
 362                  AV_OPT_FLAG_DECODING_PARAM, 0);
 363 }
 364
 365 static void opt_pretty(void)
 366 {
 367     show_value_unit              = 1;
 368     use_value_prefix             = 1;
 369     use_byte_value_binary_prefix = 1;
 370     use_value_sexagesimal_format = 1;
 371 }
 372
 373 static const OptionDef options[] = {
 374 #include "cmdutils_common_opts.h"
 375     { "f", HAS_ARG, {(void*)opt_format}, "force format", "format" },
 376     { "unit", OPT_BOOL, {(void*)&show_value_unit}, "show unit of the displayed values" },
 377     { "prefix", OPT_BOOL, {(void*)&use_value_prefix}, "use SI prefixes for the displayed values" },
 378     { "byte_binary_prefix", OPT_BOOL, {(void*)&use_byte_value_binary_prefix},
 379       "use binary prefixes for byte units" },
 380     { "sexagesimal", OPT_BOOL,  {(void*)&use_value_sexagesimal_format},
 381       "use sexagesimal format HOURS:MM:SS.MICROSECONDS for time units" },
 382     { "pretty", 0, {(void*)&opt_pretty},
 383       "prettify the format of displayed values, make it more human readable" },
 384     { "show_format",  OPT_BOOL, {(void*)&do_show_format} , "show format/container info" },
 385     { "show_packets", OPT_BOOL, {(void*)&do_show_packets}, "show packets info" },
 386     { "show_streams", OPT_BOOL, {(void*)&do_show_streams}, "show streams info" },
 387     { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, {(void*)opt_default}, "generic catch all option", "" },
 388     { NULL, },
 389 };
 390
 391 int main(int argc, char **argv)
 392 {
 393     int ret;
 394
 395     av_register_all();
 396     init_opts();
 397 #if CONFIG_AVDEVICE
 398     avdevice_register_all();
 399 #endif
 400
 401     avformat_opts = avformat_alloc_context();
 402
 403     show_banner();
 404     parse_options(argc, argv, options, opt_input_file);
 405
 406     if (!input_filename) {
 407         show_usage();
 408         fprintf(stderr, "You have to specify one input file.\n");
 409         fprintf(stderr, "Use -h to get full help or, even better, run 'man ffprobe'.\n");
 410         exit(1);
 411     }
 412
 413     ret = probe_file(input_filename);
 414
 415     av_free(avformat_opts);
 416
 417     return ret;
 418 }