ffprobe.c

   1 /*
   2  * FFprobe : Simple Media Prober based on the FFmpeg libraries
   3  * Copyright (c) 2007-2010 Stefano Sabatini
   4  *
   5  * This file is part of FFmpeg.
   6  *
   7  * FFmpeg 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  * FFmpeg 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 FFmpeg; 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 "libavcodec/opt.h"
  27 #include "libavutil/pixdesc.h"
  28 #include "libavdevice/avdevice.h"
  29 #include "cmdutils.h"
  30
  31 const char program_name[] = "FFprobe";
  32 const int program_birth_year = 2007;
  33
  34 static int do_show_format  = 0;
  35 static int do_show_streams = 0;
  36
  37 static int convert_tags                 = 0;
  38 static int show_value_unit              = 0;
  39 static int use_value_prefix             = 0;
  40 static int use_byte_value_binary_prefix = 0;
  41 static int use_value_sexagesimal_format = 0;
  42
  43 /* globals */
  44 static const OptionDef options[];
  45
  46 /* FFprobe context */
  47 static const char *input_filename;
  48 static AVInputFormat *iformat = NULL;
  49
  50 static const char *binary_unit_prefixes [] = { "", "Ki", "Mi", "Gi", "Ti", "Pi" };
  51 static const char *decimal_unit_prefixes[] = { "", "K" , "M" , "G" , "T" , "P"  };
  52
  53 static const char *unit_second_str          = "s"    ;
  54 static const char *unit_hertz_str           = "Hz"   ;
  55 static const char *unit_byte_str            = "byte" ;
  56 static const char *unit_bit_per_second_str  = "bit/s";
  57
  58 static char *value_string(char *buf, int buf_size, double val, const char *unit)
  59 {
  60     if (unit == unit_second_str && use_value_sexagesimal_format) {
  61         double secs;
  62         int hours, mins;
  63         secs  = val;
  64         mins  = (int)secs / 60;
  65         secs  = secs - mins * 60;
  66         hours = mins / 60;
  67         mins %= 60;
  68         snprintf(buf, buf_size, "%d:%02d:%09.6f", hours, mins, secs);
  69     } else if (use_value_prefix) {
  70         const char *prefix_string;
  71         int index;
  72
  73         if (unit == unit_byte_str && use_byte_value_binary_prefix) {
  74             index = (int) (log(val)/log(2)) / 10;
  75             index = av_clip(index, 0, FF_ARRAY_ELEMS(binary_unit_prefixes) -1);
  76             val /= pow(2, index*10);
  77             prefix_string = binary_unit_prefixes[index];
  78         } else {
  79             index = (int) (log10(val)) / 3;
  80             index = av_clip(index, 0, FF_ARRAY_ELEMS(decimal_unit_prefixes) -1);
  81             val /= pow(10, index*3);
  82             prefix_string = decimal_unit_prefixes[index];
  83         }
  84
  85         snprintf(buf, buf_size, "%.3f %s%s", val, prefix_string, show_value_unit ? unit : "");
  86     } else {
  87         snprintf(buf, buf_size, "%f %s", val, show_value_unit ? unit : "");
  88     }
  89
  90     return buf;
  91 }
  92
  93 static char *time_value_string(char *buf, int buf_size, int64_t val, const AVRational *time_base)
  94 {
  95     if (val == AV_NOPTS_VALUE) {
  96         snprintf(buf, buf_size, "N/A");
  97     } else {
  98         value_string(buf, buf_size, val * av_q2d(*time_base), unit_second_str);
  99     }
 100
 101     return buf;
 102 }
 103
 104 static const char *media_type_string(enum AVMediaType media_type)
 105 {
 106     switch (media_type) {
 107     case AVMEDIA_TYPE_VIDEO:      return "video";
 108     case AVMEDIA_TYPE_AUDIO:      return "audio";
 109     case AVMEDIA_TYPE_DATA:       return "data";
 110     case AVMEDIA_TYPE_SUBTITLE:   return "subtitle";
 111     case AVMEDIA_TYPE_ATTACHMENT: return "attachment";
 112     default:                      return "unknown";
 113     }
 114 }
 115
 116 static void show_stream(AVFormatContext *fmt_ctx, int stream_idx)
 117 {
 118     AVStream *stream = fmt_ctx->streams[stream_idx];
 119     AVCodecContext *dec_ctx;
 120     AVCodec *dec;
 121     char val_str[128];
 122     AVMetadataTag *tag = NULL;
 123     char a, b, c, d;
 124     AVRational display_aspect_ratio;
 125
 126     printf("[STREAM]\n");
 127
 128     printf("index=%d\n",        stream->index);
 129
 130     if ((dec_ctx = stream->codec)) {
 131         if ((dec = dec_ctx->codec)) {
 132             printf("codec_name=%s\n",         dec->name);
 133             printf("codec_long_name=%s\n",    dec->long_name);
 134         } else {
 135             printf("codec_name=unknown\n");
 136         }
 137
 138         printf("codec_type=%s\n",         media_type_string(dec_ctx->codec_type));
 139         printf("codec_time_base=%d/%d\n", dec_ctx->time_base.num, dec_ctx->time_base.den);
 140
 141         /* print AVI/FourCC tag */
 142         a = dec_ctx->codec_tag     & 0xff;
 143         b = dec_ctx->codec_tag>>8  & 0xff;
 144         c = dec_ctx->codec_tag>>16 & 0xff;
 145         d = dec_ctx->codec_tag>>24 & 0xff;
 146         printf("codec_tag_string=");
 147         if (isprint(a)) printf("%c", a); else printf("[%d]", a);
 148         if (isprint(b)) printf("%c", b); else printf("[%d]", b);
 149         if (isprint(c)) printf("%c", c); else printf("[%d]", c);
 150         if (isprint(d)) printf("%c", d); else printf("[%d]", d);
 151         printf("\ncodec_tag=0x%04x\n", dec_ctx->codec_tag);
 152
 153         switch (dec_ctx->codec_type) {
 154         case AVMEDIA_TYPE_VIDEO:
 155             printf("width=%d\n",                   dec_ctx->width);
 156             printf("height=%d\n",                  dec_ctx->height);
 157             printf("has_b_frames=%d\n",            dec_ctx->has_b_frames);
 158             printf("sample_aspect_ratio=%d:%d\n",  dec_ctx->sample_aspect_ratio.num,
 159                                                    dec_ctx->sample_aspect_ratio.den);
 160             av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
 161                       dec_ctx->width*dec_ctx->sample_aspect_ratio.num,
 162                       dec_ctx->height*dec_ctx->sample_aspect_ratio.den,
 163                       1024*1024);
 164             printf("display_aspect_ratio=%d:%d\n", display_aspect_ratio.num,
 165                                                    display_aspect_ratio.den);
 166             printf("pix_fmt=%s\n",                 dec_ctx->pix_fmt != PIX_FMT_NONE ?
 167                    av_pix_fmt_descriptors[dec_ctx->pix_fmt].name : "unknown");
 168             break;
 169
 170         case AVMEDIA_TYPE_AUDIO:
 171             printf("sample_rate=%s\n",             value_string(val_str, sizeof(val_str),
 172                                                                 dec_ctx->sample_rate,
 173                                                                 unit_hertz_str));
 174             printf("channels=%d\n",                dec_ctx->channels);
 175             printf("bits_per_sample=%d\n",         av_get_bits_per_sample(dec_ctx->codec_id));
 176             break;
 177         }
 178     } else {
 179         printf("codec_type=unknown\n");
 180     }
 181
 182     if (fmt_ctx->iformat->flags & AVFMT_SHOW_IDS)
 183         printf("id=0x%x\n", stream->id);
 184     printf("r_frame_rate=%d/%d\n",         stream->r_frame_rate.num,   stream->r_frame_rate.den);
 185     printf("avg_frame_rate=%d/%d\n",       stream->avg_frame_rate.num, stream->avg_frame_rate.den);
 186     printf("time_base=%d/%d\n",            stream->time_base.num,      stream->time_base.den);
 187     if (stream->language[0])
 188         printf("language=%s\n",            stream->language);
 189     printf("start_time=%s\n",   time_value_string(val_str, sizeof(val_str), stream->start_time,
 190                                                   &stream->time_base));
 191     printf("duration=%s\n",     time_value_string(val_str, sizeof(val_str), stream->duration,
 192                                                   &stream->time_base));
 193     if (stream->nb_frames)
 194         printf("nb_frames=%"PRId64"\n",    stream->nb_frames);
 195
 196     while ((tag = av_metadata_get(stream->metadata, "", tag, AV_METADATA_IGNORE_SUFFIX)))
 197         printf("TAG:%s=%s\n", tag->key, tag->value);
 198
 199     printf("[/STREAM]\n");
 200 }
 201
 202 static void show_format(AVFormatContext *fmt_ctx)
 203 {
 204     AVMetadataTag *tag = NULL;
 205     char val_str[128];
 206
 207     printf("[FORMAT]\n");
 208
 209     printf("filename=%s\n",         fmt_ctx->filename);
 210     printf("nb_streams=%d\n",       fmt_ctx->nb_streams);
 211     printf("format_name=%s\n",      fmt_ctx->iformat->name);
 212     printf("format_long_name=%s\n", fmt_ctx->iformat->long_name);
 213     printf("start_time=%s\n",       time_value_string(val_str, sizeof(val_str), fmt_ctx->start_time,
 214                                                       &AV_TIME_BASE_Q));
 215     printf("duration=%s\n",         time_value_string(val_str, sizeof(val_str), fmt_ctx->duration,
 216                                                       &AV_TIME_BASE_Q));
 217     printf("size=%s\n",             value_string(val_str, sizeof(val_str), fmt_ctx->file_size,
 218                                                  unit_byte_str));
 219     printf("bit_rate=%s\n",         value_string(val_str, sizeof(val_str), fmt_ctx->bit_rate,
 220                                                  unit_bit_per_second_str));
 221
 222     if (convert_tags)
 223         av_metadata_conv(fmt_ctx, NULL, fmt_ctx->iformat->metadata_conv);
 224     while ((tag = av_metadata_get(fmt_ctx->metadata, "", tag, AV_METADATA_IGNORE_SUFFIX)))
 225         printf("TAG:%s=%s\n", tag->key, tag->value);
 226
 227     printf("[/FORMAT]\n");
 228 }
 229
 230 static int open_input_file(AVFormatContext **fmt_ctx_ptr, const char *filename)
 231 {
 232     int err, i;
 233     AVFormatContext *fmt_ctx;
 234
 235     fmt_ctx = avformat_alloc_context();
 236
 237     if ((err = av_open_input_file(&fmt_ctx, filename, iformat, 0, NULL)) < 0) {
 238         print_error(filename, err);
 239         return err;
 240     }
 241
 242     /* fill the streams in the format context */
 243     if ((err = av_find_stream_info(fmt_ctx)) < 0) {
 244         print_error(filename, err);
 245         return err;
 246     }
 247
 248     dump_format(fmt_ctx, 0, filename, 0);
 249
 250     /* bind a decoder to each input stream */
 251     for (i = 0; i < fmt_ctx->nb_streams; i++) {
 252         AVStream *stream = fmt_ctx->streams[i];
 253         AVCodec *codec;
 254
 255         if (!(codec = avcodec_find_decoder(stream->codec->codec_id))) {
 256             fprintf(stderr, "Unsupported codec (id=%d) for input stream %d\n",
 257                     stream->codec->codec_id, stream->index);
 258         } else if (avcodec_open(stream->codec, codec) < 0) {
 259             fprintf(stderr, "Error while opening codec for input stream %d\n",
 260                     stream->index);
 261         }
 262     }
 263
 264     *fmt_ctx_ptr = fmt_ctx;
 265     return 0;
 266 }
 267
 268 static int probe_file(const char *filename)
 269 {
 270     AVFormatContext *fmt_ctx;
 271     int ret, i;
 272
 273     if ((ret = open_input_file(&fmt_ctx, filename)))
 274         return ret;
 275
 276     if (do_show_streams)
 277         for (i = 0; i < fmt_ctx->nb_streams; i++)
 278             show_stream(fmt_ctx, i);
 279
 280     if (do_show_format)
 281         show_format(fmt_ctx);
 282
 283     av_close_input_file(fmt_ctx);
 284     return 0;
 285 }
 286
 287 static void show_usage(void)
 288 {
 289     printf("Simple multimedia streams analyzer\n");
 290     printf("usage: ffprobe [OPTIONS] [INPUT_FILE]\n");
 291     printf("\n");
 292 }
 293
 294 static void opt_format(const char *arg)
 295 {
 296     iformat = av_find_input_format(arg);
 297     if (!iformat) {
 298         fprintf(stderr, "Unknown input format: %s\n", arg);
 299         exit(1);
 300     }
 301 }
 302
 303 static void opt_input_file(const char *arg)
 304 {
 305     if (input_filename) {
 306         fprintf(stderr, "Argument '%s' provided as input filename, but '%s' was already specified.\n",
 307                 arg, input_filename);
 308         exit(1);
 309     }
 310     if (!strcmp(arg, "-"))
 311         arg = "pipe:";
 312     input_filename = arg;
 313 }
 314
 315 static void show_help(void)
 316 {
 317     show_usage();
 318     show_help_options(options, "Main options:\n", 0, 0);
 319     printf("\n");
 320 }
 321
 322 static void opt_pretty(void)
 323 {
 324     show_value_unit              = 1;
 325     use_value_prefix             = 1;
 326     use_byte_value_binary_prefix = 1;
 327     use_value_sexagesimal_format = 1;
 328 }
 329
 330 static const OptionDef options[] = {
 331 #include "cmdutils_common_opts.h"
 332     { "convert_tags", OPT_BOOL, {(void*)&convert_tags}, "convert tag names to the FFmpeg generic tag names" },
 333     { "f", HAS_ARG, {(void*)opt_format}, "force format", "format" },
 334     { "unit", OPT_BOOL, {(void*)&show_value_unit}, "show unit of the displayed values" },
 335     { "prefix", OPT_BOOL, {(void*)&use_value_prefix}, "use SI prefixes for the displayed values" },
 336     { "byte_binary_prefix", OPT_BOOL, {(void*)&use_byte_value_binary_prefix},
 337       "use binary prefixes for byte units" },
 338     { "sexagesimal", OPT_BOOL,  {(void*)&use_value_sexagesimal_format},
 339       "use sexagesimal format HOURS:MM:SS.MICROSECONDS for time units" },
 340     { "pretty", 0, {(void*)&opt_pretty},
 341       "prettify the format of displayed values, make it more human readable" },
 342     { "show_format",  OPT_BOOL, {(void*)&do_show_format} , "show format/container info" },
 343     { "show_streams", OPT_BOOL, {(void*)&do_show_streams}, "show streams info" },
 344     { NULL, },
 345 };
 346
 347 int main(int argc, char **argv)
 348 {
 349     av_register_all();
 350 #if CONFIG_AVDEVICE
 351     avdevice_register_all();
 352 #endif
 353
 354     show_banner();
 355     parse_options(argc, argv, options, opt_input_file);
 356
 357     if (!input_filename) {
 358         show_usage();
 359         fprintf(stderr, "You have to specify one input file.\n");
 360         fprintf(stderr, "Use -h to get full help or, even better, run 'man ffprobe'.\n");
 361         exit(1);
 362     }
 363
 364     return probe_file(input_filename);
 365 }