FFmpeg/libavformat/ivfenc.c
Michael Niedermayer 2e0c360abd Merge remote-tracking branch 'qatar/master'
* qatar/master:
  cosmetics: Align muxer/demuxer declarations
  mpeg12: Do not change frame_pred_frame_dct flag and demote error into a warning
  avcodec: remove avcodec_guess_channel_layout()
  avutil: Add av_get_default_channel_layout()

Conflicts:
	doc/APIchanges
	libavcodec/mpeg12.c
	libavformat/cdg.c
	libavformat/matroskaenc.c
	libavformat/mpegts.c
	libavformat/nuv.c
	libavformat/wav.c
	libavutil/audioconvert.c
	libavutil/audioconvert.h
	libavutil/avutil.h

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2012-04-06 22:52:01 +02:00

70 lines
2.2 KiB
C

/*
* Copyright (c) 2010 Reimar Döffinger
*
* 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 "avformat.h"
#include "libavutil/intreadwrite.h"
static int ivf_write_header(AVFormatContext *s)
{
AVCodecContext *ctx;
AVIOContext *pb = s->pb;
if (s->nb_streams != 1) {
av_log(s, AV_LOG_ERROR, "Format supports only exactly one video stream\n");
return AVERROR(EINVAL);
}
ctx = s->streams[0]->codec;
if (ctx->codec_type != AVMEDIA_TYPE_VIDEO || ctx->codec_id != CODEC_ID_VP8) {
av_log(s, AV_LOG_ERROR, "Currently only VP8 is supported!\n");
return AVERROR(EINVAL);
}
avio_write(pb, "DKIF", 4);
avio_wl16(pb, 0); // version
avio_wl16(pb, 32); // header length
avio_wl32(pb, ctx->codec_tag ? ctx->codec_tag : AV_RL32("VP80"));
avio_wl16(pb, ctx->width);
avio_wl16(pb, ctx->height);
avio_wl32(pb, s->streams[0]->time_base.den);
avio_wl32(pb, s->streams[0]->time_base.num);
avio_wl64(pb, s->streams[0]->duration); // TODO: duration or number of frames?!?
return 0;
}
static int ivf_write_packet(AVFormatContext *s, AVPacket *pkt)
{
AVIOContext *pb = s->pb;
avio_wl32(pb, pkt->size);
avio_wl64(pb, pkt->pts);
avio_write(pb, pkt->data, pkt->size);
avio_flush(pb);
return 0;
}
AVOutputFormat ff_ivf_muxer = {
.name = "ivf",
.long_name = NULL_IF_CONFIG_SMALL("On2 IVF"),
.extensions = "ivf",
.audio_codec = CODEC_ID_NONE,
.video_codec = CODEC_ID_VP8,
.write_header = ivf_write_header,
.write_packet = ivf_write_packet,
};