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ffmpeg/avprobe.c

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/*
* avprobe : Simple Media Prober based on the Libav libraries
* Copyright (c) 2007-2010 Stefano Sabatini
*
* This file is part of Libav.
*
* Libav 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.
*
* Libav 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 Libav; 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 "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "libavutil/dict.h"
#include "libavdevice/avdevice.h"
#include "cmdutils.h"
const char program_name[] = "avprobe";
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[];
/* AVprobe 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";
void exit_program(int ret)
{
exit(ret);
}
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");
}
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");
}
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");
}
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 = avformat_find_stream_info(fmt_ctx, NULL)) < 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: %s [OPTIONS] [INPUT_FILE]\n", program_name);
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 void opt_input_file(void *optctx, 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;
}
static void show_help(void)
{
av_log_set_callback(log_callback_help);
show_usage();
show_help_options(options, "Main options:\n", 0, 0);
printf("\n");
show_help_children(avformat_get_class(), AV_OPT_FLAG_DECODING_PARAM);
}
static void opt_pretty(void)
{
show_value_unit = 1;
use_value_prefix = 1;
use_byte_value_binary_prefix = 1;
use_value_sexagesimal_format = 1;
}
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", "" },
{ NULL, },
};
int main(int argc, char **argv)
{
int ret;
parse_loglevel(argc, argv, options);
av_register_all();
avformat_network_init();
init_opts();
#if CONFIG_AVDEVICE
avdevice_register_all();
#endif
show_banner();
parse_options(NULL, 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 %s'.\n", program_name);
exit(1);
}
ret = probe_file(input_filename);
avformat_network_deinit();
return ret;
}
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