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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 "libavutil/channel_layout.h"
22 #include "internal.h"
23 #include "version.h"
24 
ff_framehash_write_header(AVFormatContext * s)25 int ff_framehash_write_header(AVFormatContext *s)
26 {
27     int i;
28 
29     if (s->nb_streams && !(s->flags & AVFMT_FLAG_BITEXACT))
30         avio_printf(s->pb, "#software: %s\n", LIBAVFORMAT_IDENT);
31     for (i = 0; i < s->nb_streams; i++) {
32         AVStream *st = s->streams[i];
33         AVCodecParameters *avctx = st->codecpar;
34         char buf[256] = { 0 };
35         avio_printf(s->pb, "#tb %d: %d/%d\n", i, st->time_base.num, st->time_base.den);
36         avio_printf(s->pb, "#media_type %d: %s\n", i, av_get_media_type_string(avctx->codec_type));
37         avio_printf(s->pb, "#codec_id %d: %s\n", i, avcodec_get_name(avctx->codec_id));
38         switch (avctx->codec_type) {
39         case AVMEDIA_TYPE_AUDIO: {
40             int ret = av_channel_layout_describe(&avctx->ch_layout, buf, sizeof(buf));
41             if (ret < 0)
42                 return ret;
43             avio_printf(s->pb, "#sample_rate %d: %d\n", i,avctx->sample_rate);
44             avio_printf(s->pb, "#channel_layout_name %d: %s\n", i, buf);
45             break;
46             }
47         case AVMEDIA_TYPE_VIDEO:
48             avio_printf(s->pb, "#dimensions %d: %dx%d\n", i, avctx->width, avctx->height);
49             avio_printf(s->pb, "#sar %d: %d/%d\n", i, st->sample_aspect_ratio.num, st->sample_aspect_ratio.den);
50             break;
51         }
52     }
53     return 0;
54 }
55