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