aac5773f
 hucm
功能基本完成，接口待打磨
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/*
* Common functions for the frame{crc,md5} muxers
*
* 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 "internal.h"
int ff_framehash_write_header(AVFormatContext *s)
{
int i;
if (s->nb_streams && !(s->flags & AVFMT_FLAG_BITEXACT))
avio_printf(s->pb, "#software: %s\n", LIBAVFORMAT_IDENT);
for (i = 0; i < s->nb_streams; i++) {
AVStream *st = s->streams[i];
AVCodecParameters *avctx = st->codecpar;
char buf[256] = { 0 };
avio_printf(s->pb, "#tb %d: %d/%d\n", i, st->time_base.num, st->time_base.den);
avio_printf(s->pb, "#media_type %d: %s\n", i, av_get_media_type_string(avctx->codec_type));
avio_printf(s->pb, "#codec_id %d: %s\n", i, avcodec_get_name(avctx->codec_id));
switch (avctx->codec_type) {
case AVMEDIA_TYPE_AUDIO:
av_get_channel_layout_string(buf, sizeof(buf), avctx->channels, avctx->channel_layout);
avio_printf(s->pb, "#sample_rate %d: %d\n", i,avctx->sample_rate);
avio_printf(s->pb, "#channel_layout %d: %"PRIx64"\n", i,avctx->channel_layout);
avio_printf(s->pb, "#channel_layout_name %d: %s\n", i, buf);
break;
case AVMEDIA_TYPE_VIDEO:
avio_printf(s->pb, "#dimensions %d: %dx%d\n", i, avctx->width, avctx->height);
avio_printf(s->pb, "#sar %d: %d/%d\n", i, st->sample_aspect_ratio.num, st->sample_aspect_ratio.den);
break;
}
avio_flush(s->pb);
}
return 0;
}
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