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framehash.c
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1 /*
2  * Common functions for the frame{crc,md5} muxers
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #include "internal.h"
22 
24 {
25  int i;
26 
27  if (s->nb_streams && !(s->flags & AVFMT_FLAG_BITEXACT))
28  avio_printf(s->pb, "#software: %s\n", LIBAVFORMAT_IDENT);
29  for (i = 0; i < s->nb_streams; i++) {
30  AVStream *st = s->streams[i];
31  AVCodecParameters *avctx = st->codecpar;
32  char buf[256] = { 0 };
33  avio_printf(s->pb, "#tb %d: %d/%d\n", i, st->time_base.num, st->time_base.den);
34  avio_printf(s->pb, "#media_type %d: %s\n", i, av_get_media_type_string(avctx->codec_type));
35  avio_printf(s->pb, "#codec_id %d: %s\n", i, avcodec_get_name(avctx->codec_id));
36  switch (avctx->codec_type) {
37  case AVMEDIA_TYPE_AUDIO:
38  av_get_channel_layout_string(buf, sizeof(buf), avctx->channels, avctx->channel_layout);
39  avio_printf(s->pb, "#sample_rate %d: %d\n", i,avctx->sample_rate);
40  avio_printf(s->pb, "#channel_layout %d: %"PRIx64"\n", i,avctx->channel_layout);
41  avio_printf(s->pb, "#channel_layout_name %d: %s\n", i, buf);
42  break;
43  case AVMEDIA_TYPE_VIDEO:
44  avio_printf(s->pb, "#dimensions %d: %dx%d\n", i, avctx->width, avctx->height);
45  avio_printf(s->pb, "#sar %d: %d/%d\n", i, st->sample_aspect_ratio.num, st->sample_aspect_ratio.den);
46  break;
47  }
48  avio_flush(s->pb);
49  }
50  return 0;
51 }
const char * s
Definition: avisynth_c.h:768
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: avcodec.h:3987
AVRational sample_aspect_ratio
sample aspect ratio (0 if unknown)
Definition: avformat.h:956
int num
Numerator.
Definition: rational.h:59
This struct describes the properties of an encoded stream.
Definition: avcodec.h:3979
Format I/O context.
Definition: avformat.h:1338
int width
Video only.
Definition: avcodec.h:4053
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1406
int flags
Flags modifying the (de)muxer behaviour.
Definition: avformat.h:1449
#define AVFMT_FLAG_BITEXACT
When muxing, try to avoid writing any random/volatile data to the output.
Definition: avformat.h:1466
uint64_t channel_layout
Audio only.
Definition: avcodec.h:4089
enum AVMediaType codec_type
General type of the encoded data.
Definition: avcodec.h:3983
unsigned int nb_streams
Number of elements in AVFormatContext.streams.
Definition: avformat.h:1394
#define LIBAVFORMAT_IDENT
Definition: version.h:46
int void avio_flush(AVIOContext *s)
Force flushing of buffered data.
Definition: aviobuf.c:224
int ff_framehash_write_header(AVFormatContext *s)
Set the timebase for each stream from the corresponding codec timebase and print it.
Definition: framehash.c:23
const char * avcodec_get_name(enum AVCodecID id)
Get the name of a codec.
Definition: utils.c:3147
void av_get_channel_layout_string(char *buf, int buf_size, int nb_channels, uint64_t channel_layout)
Return a description of a channel layout.
Stream structure.
Definition: avformat.h:889
AVIOContext * pb
I/O context.
Definition: avformat.h:1380
void * buf
Definition: avisynth_c.h:690
const char * av_get_media_type_string(enum AVMediaType media_type)
Return a string describing the media_type enum, NULL if media_type is unknown.
Definition: utils.c:79
int sample_rate
Audio only.
Definition: avcodec.h:4097
int den
Denominator.
Definition: rational.h:60
int channels
Audio only.
Definition: avcodec.h:4093
AVCodecParameters * codecpar
Definition: avformat.h:1241
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
Definition: avformat.h:926
int avio_printf(AVIOContext *s, const char *fmt,...) av_printf_format(2