ffprobe.c - third_party/ffmpeg - Git at Google

 /*
  * ffprobe : Simple Media Prober based on the FFmpeg libraries
  * Copyright (c) 2007-2010 Stefano Sabatini
  *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
  * FFmpeg is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */

 #include "config.h"

 #include "libavformat/avformat.h"
 #include "libavcodec/avcodec.h"
 #include "libavcodec/opt.h"
 #include "libavutil/pixdesc.h"
 #include "libavutil/dict.h"
 #include "libavdevice/avdevice.h"
 #include "cmdutils.h"

 const char program_name[] = "ffprobe";
 const int program_birth_year = 2007;

 static int do_show_format  = 0;
 static int do_show_packets = 0;
 static int do_show_streams = 0;

 static int show_value_unit              = 0;
 static int use_value_prefix             = 0;
 static int use_byte_value_binary_prefix = 0;
 static int use_value_sexagesimal_format = 0;

 /* globals */
 static const OptionDef options[];

 /* FFprobe context */
 static const char *input_filename;
 static AVInputFormat *iformat = NULL;

 static const char *binary_unit_prefixes [] = { "", "Ki", "Mi", "Gi", "Ti", "Pi" };
 static const char *decimal_unit_prefixes[] = { "", "K" , "M" , "G" , "T" , "P"  };

 static const char *unit_second_str          = "s"    ;
 static const char *unit_hertz_str           = "Hz"   ;
 static const char *unit_byte_str            = "byte" ;
 static const char *unit_bit_per_second_str  = "bit/s";

 static char *value_string(char *buf, int buf_size, double val, const char *unit)
 {
     if (unit == unit_second_str && use_value_sexagesimal_format) {
         double secs;
         int hours, mins;
         secs  = val;
         mins  = (int)secs / 60;
         secs  = secs - mins * 60;
         hours = mins / 60;
         mins %= 60;
         snprintf(buf, buf_size, "%d:%02d:%09.6f", hours, mins, secs);
     } else if (use_value_prefix) {
         const char *prefix_string;
         int index;

         if (unit == unit_byte_str && use_byte_value_binary_prefix) {
             index = (int) (log(val)/log(2)) / 10;
             index = av_clip(index, 0, FF_ARRAY_ELEMS(binary_unit_prefixes) -1);
             val /= pow(2, index*10);
             prefix_string = binary_unit_prefixes[index];
         } else {
             index = (int) (log10(val)) / 3;
             index = av_clip(index, 0, FF_ARRAY_ELEMS(decimal_unit_prefixes) -1);
             val /= pow(10, index*3);
             prefix_string = decimal_unit_prefixes[index];
         }

         snprintf(buf, buf_size, "%.3f %s%s", val, prefix_string, show_value_unit ? unit : "");
     } else {
         snprintf(buf, buf_size, "%f %s", val, show_value_unit ? unit : "");
     }

     return buf;
 }

 static char *time_value_string(char *buf, int buf_size, int64_t val, const AVRational *time_base)
 {
     if (val == AV_NOPTS_VALUE) {
         snprintf(buf, buf_size, "N/A");
     } else {
         value_string(buf, buf_size, val * av_q2d(*time_base), unit_second_str);
     }

     return buf;
 }

 static char *ts_value_string (char *buf, int buf_size, int64_t ts)
 {
     if (ts == AV_NOPTS_VALUE) {
         snprintf(buf, buf_size, "N/A");
     } else {
         snprintf(buf, buf_size, "%"PRId64, ts);
     }

     return buf;
 }

 static const char *media_type_string(enum AVMediaType media_type)
 {
     switch (media_type) {
     case AVMEDIA_TYPE_VIDEO:      return "video";
     case AVMEDIA_TYPE_AUDIO:      return "audio";
     case AVMEDIA_TYPE_DATA:       return "data";
     case AVMEDIA_TYPE_SUBTITLE:   return "subtitle";
     case AVMEDIA_TYPE_ATTACHMENT: return "attachment";
     default:                      return "unknown";
     }
 }

 static void show_packet(AVFormatContext *fmt_ctx, AVPacket *pkt)
 {
     char val_str[128];
     AVStream *st = fmt_ctx->streams[pkt->stream_index];

     printf("[PACKET]\n");
     printf("codec_type=%s\n"   , media_type_string(st->codec->codec_type));
     printf("stream_index=%d\n" , pkt->stream_index);
     printf("pts=%s\n"          , ts_value_string  (val_str, sizeof(val_str), pkt->pts));
     printf("pts_time=%s\n"     , time_value_string(val_str, sizeof(val_str), pkt->pts, &st->time_base));
     printf("dts=%s\n"          , ts_value_string  (val_str, sizeof(val_str), pkt->dts));
     printf("dts_time=%s\n"     , time_value_string(val_str, sizeof(val_str), pkt->dts, &st->time_base));
     printf("duration=%s\n"     , ts_value_string  (val_str, sizeof(val_str), pkt->duration));
     printf("duration_time=%s\n", time_value_string(val_str, sizeof(val_str), pkt->duration, &st->time_base));
     printf("size=%s\n"         , value_string     (val_str, sizeof(val_str), pkt->size, unit_byte_str));
     printf("pos=%"PRId64"\n"   , pkt->pos);
     printf("flags=%c\n"        , pkt->flags & AV_PKT_FLAG_KEY ? 'K' : '_');
     printf("[/PACKET]\n");
     fflush(stdout);
 }

 static void show_packets(AVFormatContext *fmt_ctx)
 {
     AVPacket pkt;

     av_init_packet(&pkt);

     while (!av_read_frame(fmt_ctx, &pkt))
         show_packet(fmt_ctx, &pkt);
 }

 static void show_stream(AVFormatContext *fmt_ctx, int stream_idx)
 {
     AVStream *stream = fmt_ctx->streams[stream_idx];
     AVCodecContext *dec_ctx;
     AVCodec *dec;
     char val_str[128];
     AVDictionaryEntry *tag = NULL;
     AVRational display_aspect_ratio;

     printf("[STREAM]\n");

     printf("index=%d\n",        stream->index);

     if ((dec_ctx = stream->codec)) {
         if ((dec = dec_ctx->codec)) {
             printf("codec_name=%s\n",         dec->name);
             printf("codec_long_name=%s\n",    dec->long_name);
         } else {
             printf("codec_name=unknown\n");
         }

         printf("codec_type=%s\n",         media_type_string(dec_ctx->codec_type));
         printf("codec_time_base=%d/%d\n", dec_ctx->time_base.num, dec_ctx->time_base.den);

         /* print AVI/FourCC tag */
         av_get_codec_tag_string(val_str, sizeof(val_str), dec_ctx->codec_tag);
         printf("codec_tag_string=%s\n", val_str);
         printf("codec_tag=0x%04x\n", dec_ctx->codec_tag);

         switch (dec_ctx->codec_type) {
         case AVMEDIA_TYPE_VIDEO:
             printf("width=%d\n",                   dec_ctx->width);
             printf("height=%d\n",                  dec_ctx->height);
             printf("has_b_frames=%d\n",            dec_ctx->has_b_frames);
             if (dec_ctx->sample_aspect_ratio.num) {
                 printf("sample_aspect_ratio=%d:%d\n", dec_ctx->sample_aspect_ratio.num,
                                                       dec_ctx->sample_aspect_ratio.den);
                 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
                           dec_ctx->width  * dec_ctx->sample_aspect_ratio.num,
                           dec_ctx->height * dec_ctx->sample_aspect_ratio.den,
                           1024*1024);
                 printf("display_aspect_ratio=%d:%d\n", display_aspect_ratio.num,
                                                        display_aspect_ratio.den);
             }
             printf("pix_fmt=%s\n",                 dec_ctx->pix_fmt != PIX_FMT_NONE ?
                    av_pix_fmt_descriptors[dec_ctx->pix_fmt].name : "unknown");
             printf("level=%d\n",                   dec_ctx->level);
             break;

         case AVMEDIA_TYPE_AUDIO:
             printf("sample_rate=%s\n",             value_string(val_str, sizeof(val_str),
                                                                 dec_ctx->sample_rate,
                                                                 unit_hertz_str));
             printf("channels=%d\n",                dec_ctx->channels);
             printf("bits_per_sample=%d\n",         av_get_bits_per_sample(dec_ctx->codec_id));
             break;
         }
     } else {
         printf("codec_type=unknown\n");
     }

     if (fmt_ctx->iformat->flags & AVFMT_SHOW_IDS)
         printf("id=0x%x\n", stream->id);
     printf("r_frame_rate=%d/%d\n",         stream->r_frame_rate.num,   stream->r_frame_rate.den);
     printf("avg_frame_rate=%d/%d\n",       stream->avg_frame_rate.num, stream->avg_frame_rate.den);
     printf("time_base=%d/%d\n",            stream->time_base.num,      stream->time_base.den);
     printf("start_time=%s\n",   time_value_string(val_str, sizeof(val_str), stream->start_time,
                                                   &stream->time_base));
     printf("duration=%s\n",     time_value_string(val_str, sizeof(val_str), stream->duration,
                                                   &stream->time_base));
     if (stream->nb_frames)
         printf("nb_frames=%"PRId64"\n",    stream->nb_frames);

     while ((tag = av_dict_get(stream->metadata, "", tag, AV_DICT_IGNORE_SUFFIX)))
         printf("TAG:%s=%s\n", tag->key, tag->value);

     printf("[/STREAM]\n");
     fflush(stdout);
 }

 static void show_format(AVFormatContext *fmt_ctx)
 {
     AVDictionaryEntry *tag = NULL;
     char val_str[128];

     printf("[FORMAT]\n");

     printf("filename=%s\n",         fmt_ctx->filename);
     printf("nb_streams=%d\n",       fmt_ctx->nb_streams);
     printf("format_name=%s\n",      fmt_ctx->iformat->name);
     printf("format_long_name=%s\n", fmt_ctx->iformat->long_name);
     printf("start_time=%s\n",       time_value_string(val_str, sizeof(val_str), fmt_ctx->start_time,
                                                       &AV_TIME_BASE_Q));
     printf("duration=%s\n",         time_value_string(val_str, sizeof(val_str), fmt_ctx->duration,
                                                       &AV_TIME_BASE_Q));
     printf("size=%s\n",             value_string(val_str, sizeof(val_str), fmt_ctx->file_size,
                                                  unit_byte_str));
     printf("bit_rate=%s\n",         value_string(val_str, sizeof(val_str), fmt_ctx->bit_rate,
                                                  unit_bit_per_second_str));

     while ((tag = av_dict_get(fmt_ctx->metadata, "", tag, AV_DICT_IGNORE_SUFFIX)))
         printf("TAG:%s=%s\n", tag->key, tag->value);

     printf("[/FORMAT]\n");
     fflush(stdout);
 }

 static int open_input_file(AVFormatContext **fmt_ctx_ptr, const char *filename)
 {
     int err, i;
     AVFormatContext *fmt_ctx = NULL;
     AVDictionaryEntry *t;

     if ((err = avformat_open_input(&fmt_ctx, filename, iformat, &format_opts)) < 0) {
         print_error(filename, err);
         return err;
     }
     if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
         return AVERROR_OPTION_NOT_FOUND;
     }


     /* fill the streams in the format context */
     if ((err = av_find_stream_info(fmt_ctx)) < 0) {
         print_error(filename, err);
         return err;
     }

     av_dump_format(fmt_ctx, 0, filename, 0);

     /* bind a decoder to each input stream */
     for (i = 0; i < fmt_ctx->nb_streams; i++) {
         AVStream *stream = fmt_ctx->streams[i];
         AVCodec *codec;

         if (!(codec = avcodec_find_decoder(stream->codec->codec_id))) {
             fprintf(stderr, "Unsupported codec with id %d for input stream %d\n",
                     stream->codec->codec_id, stream->index);
         } else if (avcodec_open2(stream->codec, codec, NULL) < 0) {
             fprintf(stderr, "Error while opening codec for input stream %d\n",
                     stream->index);
         }
     }

     *fmt_ctx_ptr = fmt_ctx;
     return 0;
 }

 static int probe_file(const char *filename)
 {
     AVFormatContext *fmt_ctx;
     int ret, i;

     if ((ret = open_input_file(&fmt_ctx, filename)))
         return ret;

     if (do_show_packets)
         show_packets(fmt_ctx);

     if (do_show_streams)
         for (i = 0; i < fmt_ctx->nb_streams; i++)
             show_stream(fmt_ctx, i);

     if (do_show_format)
         show_format(fmt_ctx);

     av_close_input_file(fmt_ctx);
     return 0;
 }

 static void show_usage(void)
 {
     printf("Simple multimedia streams analyzer\n");
     printf("usage: ffprobe [OPTIONS] [INPUT_FILE]\n");
     printf("\n");
 }

 static int opt_format(const char *opt, const char *arg)
 {
     iformat = av_find_input_format(arg);
     if (!iformat) {
         fprintf(stderr, "Unknown input format: %s\n", arg);
         return AVERROR(EINVAL);
     }
     return 0;
 }

 static int opt_input_file(const char *opt, const char *arg)
 {
     if (input_filename) {
         fprintf(stderr, "Argument '%s' provided as input filename, but '%s' was already specified.\n",
                 arg, input_filename);
         exit(1);
     }
     if (!strcmp(arg, "-"))
         arg = "pipe:";
     input_filename = arg;
     return 0;
 }

 static int opt_help(const char *opt, const char *arg)
 {
     av_log_set_callback(log_callback_help);
     show_usage();
     show_help_options(options, "Main options:\n", 0, 0);
     printf("\n");
     av_opt_show2(avformat_opts, NULL,
                  AV_OPT_FLAG_DECODING_PARAM, 0);
     return 0;
 }

 static int opt_pretty(const char *opt, const char *arg)
 {
     show_value_unit              = 1;
     use_value_prefix             = 1;
     use_byte_value_binary_prefix = 1;
     use_value_sexagesimal_format = 1;
     return 0;
 }

 static const OptionDef options[] = {
 #include "cmdutils_common_opts.h"
     { "f", HAS_ARG, {(void*)opt_format}, "force format", "format" },
     { "unit", OPT_BOOL, {(void*)&show_value_unit}, "show unit of the displayed values" },
     { "prefix", OPT_BOOL, {(void*)&use_value_prefix}, "use SI prefixes for the displayed values" },
     { "byte_binary_prefix", OPT_BOOL, {(void*)&use_byte_value_binary_prefix},
       "use binary prefixes for byte units" },
     { "sexagesimal", OPT_BOOL,  {(void*)&use_value_sexagesimal_format},
       "use sexagesimal format HOURS:MM:SS.MICROSECONDS for time units" },
     { "pretty", 0, {(void*)&opt_pretty},
       "prettify the format of displayed values, make it more human readable" },
     { "show_format",  OPT_BOOL, {(void*)&do_show_format} , "show format/container info" },
     { "show_packets", OPT_BOOL, {(void*)&do_show_packets}, "show packets info" },
     { "show_streams", OPT_BOOL, {(void*)&do_show_streams}, "show streams info" },
     { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, {(void*)opt_default}, "generic catch all option", "" },
     { "i", HAS_ARG, {(void *)opt_input_file}, "read specified file", "input_file"},
     { NULL, },
 };

 int main(int argc, char **argv)
 {
     int ret;

     av_register_all();
     init_opts();
 #if CONFIG_AVDEVICE
     avdevice_register_all();
 #endif

     show_banner();
     parse_options(argc, argv, options, opt_input_file);

     if (!input_filename) {
         show_usage();
         fprintf(stderr, "You have to specify one input file.\n");
         fprintf(stderr, "Use -h to get full help or, even better, run 'man ffprobe'.\n");
         exit(1);
     }

     ret = probe_file(input_filename);

     av_free(avformat_opts);

     return ret;
 }
	/*
	* ffprobe : Simple Media Prober based on the FFmpeg libraries
	* Copyright (c) 2007-2010 Stefano Sabatini
	*
	* This file is part of FFmpeg.
	*
	* FFmpeg is free software; you can redistribute it and/or
	* modify it under the terms of the GNU Lesser General Public
	* License as published by the Free Software Foundation; either
	* version 2.1 of the License, or (at your option) any later version.
	*
	* FFmpeg is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	* Lesser General Public License for more details.
	*
	* You should have received a copy of the GNU Lesser General Public
	* License along with FFmpeg; if not, write to the Free Software
	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
	*/

	#include "config.h"

	#include "libavformat/avformat.h"
	#include "libavcodec/avcodec.h"
	#include "libavcodec/opt.h"
	#include "libavutil/pixdesc.h"
	#include "libavutil/dict.h"
	#include "libavdevice/avdevice.h"
	#include "cmdutils.h"

	const char program_name[] = "ffprobe";
	const int program_birth_year = 2007;

	static int do_show_format = 0;
	static int do_show_packets = 0;
	static int do_show_streams = 0;

	static int show_value_unit = 0;
	static int use_value_prefix = 0;
	static int use_byte_value_binary_prefix = 0;
	static int use_value_sexagesimal_format = 0;

	/* globals */
	static const OptionDef options[];

	/* FFprobe context */
	static const char *input_filename;
	static AVInputFormat *iformat = NULL;

	static const char *binary_unit_prefixes [] = { "", "Ki", "Mi", "Gi", "Ti", "Pi" };
	static const char *decimal_unit_prefixes[] = { "", "K" , "M" , "G" , "T" , "P" };

	static const char *unit_second_str = "s" ;
	static const char *unit_hertz_str = "Hz" ;
	static const char *unit_byte_str = "byte" ;
	static const char *unit_bit_per_second_str = "bit/s";

	static char value_string(char buf, int buf_size, double val, const char *unit)
	{
	if (unit == unit_second_str && use_value_sexagesimal_format) {
	double secs;
	int hours, mins;
	secs = val;
	mins = (int)secs / 60;
	secs = secs - mins * 60;
	hours = mins / 60;
	mins %= 60;
	snprintf(buf, buf_size, "%d:%02d:%09.6f", hours, mins, secs);
	} else if (use_value_prefix) {
	const char *prefix_string;
	int index;

	if (unit == unit_byte_str && use_byte_value_binary_prefix) {
	index = (int) (log(val)/log(2)) / 10;
	index = av_clip(index, 0, FF_ARRAY_ELEMS(binary_unit_prefixes) -1);
	val /= pow(2, index*10);
	prefix_string = binary_unit_prefixes[index];
	} else {
	index = (int) (log10(val)) / 3;
	index = av_clip(index, 0, FF_ARRAY_ELEMS(decimal_unit_prefixes) -1);
	val /= pow(10, index*3);
	prefix_string = decimal_unit_prefixes[index];
	}

	snprintf(buf, buf_size, "%.3f %s%s", val, prefix_string, show_value_unit ? unit : "");
	} else {
	snprintf(buf, buf_size, "%f %s", val, show_value_unit ? unit : "");
	}

	return buf;
	}

	static char time_value_string(char buf, int buf_size, int64_t val, const AVRational *time_base)
	{
	if (val == AV_NOPTS_VALUE) {
	snprintf(buf, buf_size, "N/A");
	} else {
	value_string(buf, buf_size, val * av_q2d(*time_base), unit_second_str);
	}

	return buf;
	}

	static char ts_value_string (char buf, int buf_size, int64_t ts)
	{
	if (ts == AV_NOPTS_VALUE) {
	snprintf(buf, buf_size, "N/A");
	} else {
	snprintf(buf, buf_size, "%"PRId64, ts);
	}

	return buf;
	}

	static const char *media_type_string(enum AVMediaType media_type)
	{
	switch (media_type) {
	case AVMEDIA_TYPE_VIDEO: return "video";
	case AVMEDIA_TYPE_AUDIO: return "audio";
	case AVMEDIA_TYPE_DATA: return "data";
	case AVMEDIA_TYPE_SUBTITLE: return "subtitle";
	case AVMEDIA_TYPE_ATTACHMENT: return "attachment";
	default: return "unknown";
	}
	}

	static void show_packet(AVFormatContext fmt_ctx, AVPacket pkt)
	{
	char val_str[128];
	AVStream *st = fmt_ctx->streams[pkt->stream_index];

	printf("[PACKET]\n");
	printf("codec_type=%s\n" , media_type_string(st->codec->codec_type));
	printf("stream_index=%d\n" , pkt->stream_index);
	printf("pts=%s\n" , ts_value_string (val_str, sizeof(val_str), pkt->pts));
	printf("pts_time=%s\n" , time_value_string(val_str, sizeof(val_str), pkt->pts, &st->time_base));
	printf("dts=%s\n" , ts_value_string (val_str, sizeof(val_str), pkt->dts));
	printf("dts_time=%s\n" , time_value_string(val_str, sizeof(val_str), pkt->dts, &st->time_base));
	printf("duration=%s\n" , ts_value_string (val_str, sizeof(val_str), pkt->duration));
	printf("duration_time=%s\n", time_value_string(val_str, sizeof(val_str), pkt->duration, &st->time_base));
	printf("size=%s\n" , value_string (val_str, sizeof(val_str), pkt->size, unit_byte_str));
	printf("pos=%"PRId64"\n" , pkt->pos);
	printf("flags=%c\n" , pkt->flags & AV_PKT_FLAG_KEY ? 'K' : '_');
	printf("[/PACKET]\n");
	fflush(stdout);
	}

	static void show_packets(AVFormatContext *fmt_ctx)
	{
	AVPacket pkt;

	av_init_packet(&pkt);

	while (!av_read_frame(fmt_ctx, &pkt))
	show_packet(fmt_ctx, &pkt);
	}

	static void show_stream(AVFormatContext *fmt_ctx, int stream_idx)
	{
	AVStream *stream = fmt_ctx->streams[stream_idx];
	AVCodecContext *dec_ctx;
	AVCodec *dec;
	char val_str[128];
	AVDictionaryEntry *tag = NULL;
	AVRational display_aspect_ratio;

	printf("[STREAM]\n");

	printf("index=%d\n", stream->index);

	if ((dec_ctx = stream->codec)) {
	if ((dec = dec_ctx->codec)) {
	printf("codec_name=%s\n", dec->name);
	printf("codec_long_name=%s\n", dec->long_name);
	} else {
	printf("codec_name=unknown\n");
	}

	printf("codec_type=%s\n", media_type_string(dec_ctx->codec_type));
	printf("codec_time_base=%d/%d\n", dec_ctx->time_base.num, dec_ctx->time_base.den);

	/* print AVI/FourCC tag */
	av_get_codec_tag_string(val_str, sizeof(val_str), dec_ctx->codec_tag);
	printf("codec_tag_string=%s\n", val_str);
	printf("codec_tag=0x%04x\n", dec_ctx->codec_tag);

	switch (dec_ctx->codec_type) {
	case AVMEDIA_TYPE_VIDEO:
	printf("width=%d\n", dec_ctx->width);
	printf("height=%d\n", dec_ctx->height);
	printf("has_b_frames=%d\n", dec_ctx->has_b_frames);
	if (dec_ctx->sample_aspect_ratio.num) {
	printf("sample_aspect_ratio=%d:%d\n", dec_ctx->sample_aspect_ratio.num,
	dec_ctx->sample_aspect_ratio.den);
	av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
	dec_ctx->width * dec_ctx->sample_aspect_ratio.num,
	dec_ctx->height * dec_ctx->sample_aspect_ratio.den,
	1024*1024);
	printf("display_aspect_ratio=%d:%d\n", display_aspect_ratio.num,
	display_aspect_ratio.den);
	}
	printf("pix_fmt=%s\n", dec_ctx->pix_fmt != PIX_FMT_NONE ?
	av_pix_fmt_descriptors[dec_ctx->pix_fmt].name : "unknown");
	printf("level=%d\n", dec_ctx->level);
	break;

	case AVMEDIA_TYPE_AUDIO:
	printf("sample_rate=%s\n", value_string(val_str, sizeof(val_str),
	dec_ctx->sample_rate,
	unit_hertz_str));
	printf("channels=%d\n", dec_ctx->channels);
	printf("bits_per_sample=%d\n", av_get_bits_per_sample(dec_ctx->codec_id));
	break;
	}
	} else {
	printf("codec_type=unknown\n");
	}

	if (fmt_ctx->iformat->flags & AVFMT_SHOW_IDS)
	printf("id=0x%x\n", stream->id);
	printf("r_frame_rate=%d/%d\n", stream->r_frame_rate.num, stream->r_frame_rate.den);
	printf("avg_frame_rate=%d/%d\n", stream->avg_frame_rate.num, stream->avg_frame_rate.den);
	printf("time_base=%d/%d\n", stream->time_base.num, stream->time_base.den);
	printf("start_time=%s\n", time_value_string(val_str, sizeof(val_str), stream->start_time,
	&stream->time_base));
	printf("duration=%s\n", time_value_string(val_str, sizeof(val_str), stream->duration,
	&stream->time_base));
	if (stream->nb_frames)
	printf("nb_frames=%"PRId64"\n", stream->nb_frames);

	while ((tag = av_dict_get(stream->metadata, "", tag, AV_DICT_IGNORE_SUFFIX)))
	printf("TAG:%s=%s\n", tag->key, tag->value);

	printf("[/STREAM]\n");
	fflush(stdout);
	}

	static void show_format(AVFormatContext *fmt_ctx)
	{
	AVDictionaryEntry *tag = NULL;
	char val_str[128];

	printf("[FORMAT]\n");

	printf("filename=%s\n", fmt_ctx->filename);
	printf("nb_streams=%d\n", fmt_ctx->nb_streams);
	printf("format_name=%s\n", fmt_ctx->iformat->name);
	printf("format_long_name=%s\n", fmt_ctx->iformat->long_name);
	printf("start_time=%s\n", time_value_string(val_str, sizeof(val_str), fmt_ctx->start_time,
	&AV_TIME_BASE_Q));
	printf("duration=%s\n", time_value_string(val_str, sizeof(val_str), fmt_ctx->duration,
	&AV_TIME_BASE_Q));
	printf("size=%s\n", value_string(val_str, sizeof(val_str), fmt_ctx->file_size,
	unit_byte_str));
	printf("bit_rate=%s\n", value_string(val_str, sizeof(val_str), fmt_ctx->bit_rate,
	unit_bit_per_second_str));

	while ((tag = av_dict_get(fmt_ctx->metadata, "", tag, AV_DICT_IGNORE_SUFFIX)))
	printf("TAG:%s=%s\n", tag->key, tag->value);

	printf("[/FORMAT]\n");
	fflush(stdout);
	}

	static int open_input_file(AVFormatContext *fmt_ctx_ptr, const char filename)
	{
	int err, i;
	AVFormatContext *fmt_ctx = NULL;
	AVDictionaryEntry *t;

	if ((err = avformat_open_input(&fmt_ctx, filename, iformat, &format_opts)) < 0) {
	print_error(filename, err);
	return err;
	}
	if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
	av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
	return AVERROR_OPTION_NOT_FOUND;
	}


	/* fill the streams in the format context */
	if ((err = av_find_stream_info(fmt_ctx)) < 0) {
	print_error(filename, err);
	return err;
	}

	av_dump_format(fmt_ctx, 0, filename, 0);

	/* bind a decoder to each input stream */
	for (i = 0; i < fmt_ctx->nb_streams; i++) {
	AVStream *stream = fmt_ctx->streams[i];
	AVCodec *codec;

	if (!(codec = avcodec_find_decoder(stream->codec->codec_id))) {
	fprintf(stderr, "Unsupported codec with id %d for input stream %d\n",
	stream->codec->codec_id, stream->index);
	} else if (avcodec_open2(stream->codec, codec, NULL) < 0) {
	fprintf(stderr, "Error while opening codec for input stream %d\n",
	stream->index);
	}
	}

	*fmt_ctx_ptr = fmt_ctx;
	return 0;
	}

	static int probe_file(const char *filename)
	{
	AVFormatContext *fmt_ctx;
	int ret, i;

	if ((ret = open_input_file(&fmt_ctx, filename)))
	return ret;

	if (do_show_packets)
	show_packets(fmt_ctx);

	if (do_show_streams)
	for (i = 0; i < fmt_ctx->nb_streams; i++)
	show_stream(fmt_ctx, i);

	if (do_show_format)
	show_format(fmt_ctx);

	av_close_input_file(fmt_ctx);
	return 0;
	}

	static void show_usage(void)
	{
	printf("Simple multimedia streams analyzer\n");
	printf("usage: ffprobe [OPTIONS] [INPUT_FILE]\n");
	printf("\n");
	}

	static int opt_format(const char opt, const char arg)
	{
	iformat = av_find_input_format(arg);
	if (!iformat) {
	fprintf(stderr, "Unknown input format: %s\n", arg);
	return AVERROR(EINVAL);
	}
	return 0;
	}

	static int opt_input_file(const char opt, const char arg)
	{
	if (input_filename) {
	fprintf(stderr, "Argument '%s' provided as input filename, but '%s' was already specified.\n",
	arg, input_filename);
	exit(1);
	}
	if (!strcmp(arg, "-"))
	arg = "pipe:";
	input_filename = arg;
	return 0;
	}

	static int opt_help(const char opt, const char arg)
	{
	av_log_set_callback(log_callback_help);
	show_usage();
	show_help_options(options, "Main options:\n", 0, 0);
	printf("\n");
	av_opt_show2(avformat_opts, NULL,
	AV_OPT_FLAG_DECODING_PARAM, 0);
	return 0;
	}

	static int opt_pretty(const char opt, const char arg)
	{
	show_value_unit = 1;
	use_value_prefix = 1;
	use_byte_value_binary_prefix = 1;
	use_value_sexagesimal_format = 1;
	return 0;
	}

	static const OptionDef options[] = {
	#include "cmdutils_common_opts.h"
	{ "f", HAS_ARG, {(void*)opt_format}, "force format", "format" },
	{ "unit", OPT_BOOL, {(void*)&show_value_unit}, "show unit of the displayed values" },
	{ "prefix", OPT_BOOL, {(void*)&use_value_prefix}, "use SI prefixes for the displayed values" },
	{ "byte_binary_prefix", OPT_BOOL, {(void*)&use_byte_value_binary_prefix},
	"use binary prefixes for byte units" },
	{ "sexagesimal", OPT_BOOL, {(void*)&use_value_sexagesimal_format},
	"use sexagesimal format HOURS:MM:SS.MICROSECONDS for time units" },
	{ "pretty", 0, {(void*)&opt_pretty},
	"prettify the format of displayed values, make it more human readable" },
	{ "show_format", OPT_BOOL, {(void*)&do_show_format} , "show format/container info" },
	{ "show_packets", OPT_BOOL, {(void*)&do_show_packets}, "show packets info" },
	{ "show_streams", OPT_BOOL, {(void*)&do_show_streams}, "show streams info" },
	{ "default", HAS_ARG \| OPT_AUDIO \| OPT_VIDEO \| OPT_EXPERT, {(void*)opt_default}, "generic catch all option", "" },
	{ "i", HAS_ARG, {(void *)opt_input_file}, "read specified file", "input_file"},
	{ NULL, },
	};

	int main(int argc, char **argv)
	{
	int ret;

	av_register_all();
	init_opts();
	#if CONFIG_AVDEVICE
	avdevice_register_all();
	#endif

	show_banner();
	parse_options(argc, argv, options, opt_input_file);

	if (!input_filename) {
	show_usage();
	fprintf(stderr, "You have to specify one input file.\n");
	fprintf(stderr, "Use -h to get full help or, even better, run 'man ffprobe'.\n");
	exit(1);
	}

	ret = probe_file(input_filename);

	av_free(avformat_opts);

	return ret;
	}