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