Libav
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00001 /* 00002 * FFprobe : Simple Media Prober based on the FFmpeg libraries 00003 * Copyright (c) 2007-2010 Stefano Sabatini 00004 * 00005 * This file is part of FFmpeg. 00006 * 00007 * FFmpeg is free software; you can redistribute it and/or 00008 * modify it under the terms of the GNU Lesser General Public 00009 * License as published by the Free Software Foundation; either 00010 * version 2.1 of the License, or (at your option) any later version. 00011 * 00012 * FFmpeg is distributed in the hope that it will be useful, 00013 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00014 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00015 * Lesser General Public License for more details. 00016 * 00017 * You should have received a copy of the GNU Lesser General Public 00018 * License along with FFmpeg; if not, write to the Free Software 00019 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 00020 */ 00021 00022 #include "config.h" 00023 00024 #include "libavformat/avformat.h" 00025 #include "libavcodec/avcodec.h" 00026 #include "libavcodec/opt.h" 00027 #include "libavutil/pixdesc.h" 00028 #include "libavdevice/avdevice.h" 00029 #include "cmdutils.h" 00030 00031 const char program_name[] = "FFprobe"; 00032 const int program_birth_year = 2007; 00033 00034 static int do_show_format = 0; 00035 static int do_show_streams = 0; 00036 00037 static int convert_tags = 0; 00038 static int show_value_unit = 0; 00039 static int use_value_prefix = 0; 00040 static int use_byte_value_binary_prefix = 0; 00041 static int use_value_sexagesimal_format = 0; 00042 00043 /* globals */ 00044 static const OptionDef options[]; 00045 00046 /* FFprobe context */ 00047 static const char *input_filename; 00048 static AVInputFormat *iformat = NULL; 00049 00050 static const char *binary_unit_prefixes [] = { "", "Ki", "Mi", "Gi", "Ti", "Pi" }; 00051 static const char *decimal_unit_prefixes[] = { "", "K" , "M" , "G" , "T" , "P" }; 00052 00053 static const char *unit_second_str = "s" ; 00054 static const char *unit_hertz_str = "Hz" ; 00055 static const char *unit_byte_str = "byte" ; 00056 static const char *unit_bit_per_second_str = "bit/s"; 00057 00058 static char *value_string(char *buf, int buf_size, double val, const char *unit) 00059 { 00060 if (unit == unit_second_str && use_value_sexagesimal_format) { 00061 double secs; 00062 int hours, mins; 00063 secs = val; 00064 mins = (int)secs / 60; 00065 secs = secs - mins * 60; 00066 hours = mins / 60; 00067 mins %= 60; 00068 snprintf(buf, buf_size, "%d:%02d:%09.6f", hours, mins, secs); 00069 } else if (use_value_prefix) { 00070 const char *prefix_string; 00071 int index; 00072 00073 if (unit == unit_byte_str && use_byte_value_binary_prefix) { 00074 index = (int) (log(val)/log(2)) / 10; 00075 index = av_clip(index, 0, FF_ARRAY_ELEMS(binary_unit_prefixes) -1); 00076 val /= pow(2, index*10); 00077 prefix_string = binary_unit_prefixes[index]; 00078 } else { 00079 index = (int) (log10(val)) / 3; 00080 index = av_clip(index, 0, FF_ARRAY_ELEMS(decimal_unit_prefixes) -1); 00081 val /= pow(10, index*3); 00082 prefix_string = decimal_unit_prefixes[index]; 00083 } 00084 00085 snprintf(buf, buf_size, "%.3f %s%s", val, prefix_string, show_value_unit ? unit : ""); 00086 } else { 00087 snprintf(buf, buf_size, "%f %s", val, show_value_unit ? unit : ""); 00088 } 00089 00090 return buf; 00091 } 00092 00093 static char *time_value_string(char *buf, int buf_size, int64_t val, const AVRational *time_base) 00094 { 00095 if (val == AV_NOPTS_VALUE) { 00096 snprintf(buf, buf_size, "N/A"); 00097 } else { 00098 value_string(buf, buf_size, val * av_q2d(*time_base), unit_second_str); 00099 } 00100 00101 return buf; 00102 } 00103 00104 static const char *media_type_string(enum AVMediaType media_type) 00105 { 00106 switch (media_type) { 00107 case AVMEDIA_TYPE_VIDEO: return "video"; 00108 case AVMEDIA_TYPE_AUDIO: return "audio"; 00109 case AVMEDIA_TYPE_DATA: return "data"; 00110 case AVMEDIA_TYPE_SUBTITLE: return "subtitle"; 00111 case AVMEDIA_TYPE_ATTACHMENT: return "attachment"; 00112 default: return "unknown"; 00113 } 00114 } 00115 00116 static void show_stream(AVFormatContext *fmt_ctx, int stream_idx) 00117 { 00118 AVStream *stream = fmt_ctx->streams[stream_idx]; 00119 AVCodecContext *dec_ctx; 00120 AVCodec *dec; 00121 char val_str[128]; 00122 AVMetadataTag *tag = NULL; 00123 char a, b, c, d; 00124 AVRational display_aspect_ratio; 00125 00126 printf("[STREAM]\n"); 00127 00128 printf("index=%d\n", stream->index); 00129 00130 if ((dec_ctx = stream->codec)) { 00131 if ((dec = dec_ctx->codec)) { 00132 printf("codec_name=%s\n", dec->name); 00133 printf("codec_long_name=%s\n", dec->long_name); 00134 } else { 00135 printf("codec_name=unknown\n"); 00136 } 00137 00138 printf("codec_type=%s\n", media_type_string(dec_ctx->codec_type)); 00139 printf("codec_time_base=%d/%d\n", dec_ctx->time_base.num, dec_ctx->time_base.den); 00140 00141 /* print AVI/FourCC tag */ 00142 a = dec_ctx->codec_tag & 0xff; 00143 b = dec_ctx->codec_tag>>8 & 0xff; 00144 c = dec_ctx->codec_tag>>16 & 0xff; 00145 d = dec_ctx->codec_tag>>24 & 0xff; 00146 printf("codec_tag_string="); 00147 if (isprint(a)) printf("%c", a); else printf("[%d]", a); 00148 if (isprint(b)) printf("%c", b); else printf("[%d]", b); 00149 if (isprint(c)) printf("%c", c); else printf("[%d]", c); 00150 if (isprint(d)) printf("%c", d); else printf("[%d]", d); 00151 printf("\ncodec_tag=0x%04x\n", dec_ctx->codec_tag); 00152 00153 switch (dec_ctx->codec_type) { 00154 case AVMEDIA_TYPE_VIDEO: 00155 printf("width=%d\n", dec_ctx->width); 00156 printf("height=%d\n", dec_ctx->height); 00157 printf("has_b_frames=%d\n", dec_ctx->has_b_frames); 00158 if (dec_ctx->sample_aspect_ratio.num) { 00159 printf("sample_aspect_ratio=%d:%d\n", dec_ctx->sample_aspect_ratio.num, 00160 dec_ctx->sample_aspect_ratio.den); 00161 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den, 00162 dec_ctx->width * dec_ctx->sample_aspect_ratio.num, 00163 dec_ctx->height * dec_ctx->sample_aspect_ratio.den, 00164 1024*1024); 00165 printf("display_aspect_ratio=%d:%d\n", display_aspect_ratio.num, 00166 display_aspect_ratio.den); 00167 } 00168 printf("pix_fmt=%s\n", dec_ctx->pix_fmt != PIX_FMT_NONE ? 00169 av_pix_fmt_descriptors[dec_ctx->pix_fmt].name : "unknown"); 00170 break; 00171 00172 case AVMEDIA_TYPE_AUDIO: 00173 printf("sample_rate=%s\n", value_string(val_str, sizeof(val_str), 00174 dec_ctx->sample_rate, 00175 unit_hertz_str)); 00176 printf("channels=%d\n", dec_ctx->channels); 00177 printf("bits_per_sample=%d\n", av_get_bits_per_sample(dec_ctx->codec_id)); 00178 break; 00179 } 00180 } else { 00181 printf("codec_type=unknown\n"); 00182 } 00183 00184 if (fmt_ctx->iformat->flags & AVFMT_SHOW_IDS) 00185 printf("id=0x%x\n", stream->id); 00186 printf("r_frame_rate=%d/%d\n", stream->r_frame_rate.num, stream->r_frame_rate.den); 00187 printf("avg_frame_rate=%d/%d\n", stream->avg_frame_rate.num, stream->avg_frame_rate.den); 00188 printf("time_base=%d/%d\n", stream->time_base.num, stream->time_base.den); 00189 if (stream->language[0]) 00190 printf("language=%s\n", stream->language); 00191 printf("start_time=%s\n", time_value_string(val_str, sizeof(val_str), stream->start_time, 00192 &stream->time_base)); 00193 printf("duration=%s\n", time_value_string(val_str, sizeof(val_str), stream->duration, 00194 &stream->time_base)); 00195 if (stream->nb_frames) 00196 printf("nb_frames=%"PRId64"\n", stream->nb_frames); 00197 00198 while ((tag = av_metadata_get(stream->metadata, "", tag, AV_METADATA_IGNORE_SUFFIX))) 00199 printf("TAG:%s=%s\n", tag->key, tag->value); 00200 00201 printf("[/STREAM]\n"); 00202 } 00203 00204 static void show_format(AVFormatContext *fmt_ctx) 00205 { 00206 AVMetadataTag *tag = NULL; 00207 char val_str[128]; 00208 00209 printf("[FORMAT]\n"); 00210 00211 printf("filename=%s\n", fmt_ctx->filename); 00212 printf("nb_streams=%d\n", fmt_ctx->nb_streams); 00213 printf("format_name=%s\n", fmt_ctx->iformat->name); 00214 printf("format_long_name=%s\n", fmt_ctx->iformat->long_name); 00215 printf("start_time=%s\n", time_value_string(val_str, sizeof(val_str), fmt_ctx->start_time, 00216 &AV_TIME_BASE_Q)); 00217 printf("duration=%s\n", time_value_string(val_str, sizeof(val_str), fmt_ctx->duration, 00218 &AV_TIME_BASE_Q)); 00219 printf("size=%s\n", value_string(val_str, sizeof(val_str), fmt_ctx->file_size, 00220 unit_byte_str)); 00221 printf("bit_rate=%s\n", value_string(val_str, sizeof(val_str), fmt_ctx->bit_rate, 00222 unit_bit_per_second_str)); 00223 00224 if (convert_tags) 00225 av_metadata_conv(fmt_ctx, NULL, fmt_ctx->iformat->metadata_conv); 00226 while ((tag = av_metadata_get(fmt_ctx->metadata, "", tag, AV_METADATA_IGNORE_SUFFIX))) 00227 printf("TAG:%s=%s\n", tag->key, tag->value); 00228 00229 printf("[/FORMAT]\n"); 00230 } 00231 00232 static int open_input_file(AVFormatContext **fmt_ctx_ptr, const char *filename) 00233 { 00234 int err, i; 00235 AVFormatContext *fmt_ctx; 00236 00237 fmt_ctx = avformat_alloc_context(); 00238 00239 if ((err = av_open_input_file(&fmt_ctx, filename, iformat, 0, NULL)) < 0) { 00240 print_error(filename, err); 00241 return err; 00242 } 00243 00244 /* fill the streams in the format context */ 00245 if ((err = av_find_stream_info(fmt_ctx)) < 0) { 00246 print_error(filename, err); 00247 return err; 00248 } 00249 00250 dump_format(fmt_ctx, 0, filename, 0); 00251 00252 /* bind a decoder to each input stream */ 00253 for (i = 0; i < fmt_ctx->nb_streams; i++) { 00254 AVStream *stream = fmt_ctx->streams[i]; 00255 AVCodec *codec; 00256 00257 if (!(codec = avcodec_find_decoder(stream->codec->codec_id))) { 00258 fprintf(stderr, "Unsupported codec (id=%d) for input stream %d\n", 00259 stream->codec->codec_id, stream->index); 00260 } else if (avcodec_open(stream->codec, codec) < 0) { 00261 fprintf(stderr, "Error while opening codec for input stream %d\n", 00262 stream->index); 00263 } 00264 } 00265 00266 *fmt_ctx_ptr = fmt_ctx; 00267 return 0; 00268 } 00269 00270 static int probe_file(const char *filename) 00271 { 00272 AVFormatContext *fmt_ctx; 00273 int ret, i; 00274 00275 if ((ret = open_input_file(&fmt_ctx, filename))) 00276 return ret; 00277 00278 if (do_show_streams) 00279 for (i = 0; i < fmt_ctx->nb_streams; i++) 00280 show_stream(fmt_ctx, i); 00281 00282 if (do_show_format) 00283 show_format(fmt_ctx); 00284 00285 av_close_input_file(fmt_ctx); 00286 return 0; 00287 } 00288 00289 static void show_usage(void) 00290 { 00291 printf("Simple multimedia streams analyzer\n"); 00292 printf("usage: ffprobe [OPTIONS] [INPUT_FILE]\n"); 00293 printf("\n"); 00294 } 00295 00296 static void opt_format(const char *arg) 00297 { 00298 iformat = av_find_input_format(arg); 00299 if (!iformat) { 00300 fprintf(stderr, "Unknown input format: %s\n", arg); 00301 exit(1); 00302 } 00303 } 00304 00305 static void opt_input_file(const char *arg) 00306 { 00307 if (input_filename) { 00308 fprintf(stderr, "Argument '%s' provided as input filename, but '%s' was already specified.\n", 00309 arg, input_filename); 00310 exit(1); 00311 } 00312 if (!strcmp(arg, "-")) 00313 arg = "pipe:"; 00314 input_filename = arg; 00315 } 00316 00317 static void show_help(void) 00318 { 00319 show_usage(); 00320 show_help_options(options, "Main options:\n", 0, 0); 00321 printf("\n"); 00322 } 00323 00324 static void opt_pretty(void) 00325 { 00326 show_value_unit = 1; 00327 use_value_prefix = 1; 00328 use_byte_value_binary_prefix = 1; 00329 use_value_sexagesimal_format = 1; 00330 } 00331 00332 static const OptionDef options[] = { 00333 #include "cmdutils_common_opts.h" 00334 { "convert_tags", OPT_BOOL, {(void*)&convert_tags}, "convert tag names to the FFmpeg generic tag names" }, 00335 { "f", HAS_ARG, {(void*)opt_format}, "force format", "format" }, 00336 { "unit", OPT_BOOL, {(void*)&show_value_unit}, "show unit of the displayed values" }, 00337 { "prefix", OPT_BOOL, {(void*)&use_value_prefix}, "use SI prefixes for the displayed values" }, 00338 { "byte_binary_prefix", OPT_BOOL, {(void*)&use_byte_value_binary_prefix}, 00339 "use binary prefixes for byte units" }, 00340 { "sexagesimal", OPT_BOOL, {(void*)&use_value_sexagesimal_format}, 00341 "use sexagesimal format HOURS:MM:SS.MICROSECONDS for time units" }, 00342 { "pretty", 0, {(void*)&opt_pretty}, 00343 "prettify the format of displayed values, make it more human readable" }, 00344 { "show_format", OPT_BOOL, {(void*)&do_show_format} , "show format/container info" }, 00345 { "show_streams", OPT_BOOL, {(void*)&do_show_streams}, "show streams info" }, 00346 { NULL, }, 00347 }; 00348 00349 int main(int argc, char **argv) 00350 { 00351 av_register_all(); 00352 #if CONFIG_AVDEVICE 00353 avdevice_register_all(); 00354 #endif 00355 00356 show_banner(); 00357 parse_options(argc, argv, options, opt_input_file); 00358 00359 if (!input_filename) { 00360 show_usage(); 00361 fprintf(stderr, "You have to specify one input file.\n"); 00362 fprintf(stderr, "Use -h to get full help or, even better, run 'man ffprobe'.\n"); 00363 exit(1); 00364 } 00365 00366 return probe_file(input_filename); 00367 }