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/*
* VC-1 test bitstreams format muxer.
* Copyright (c) 2008 Konstantin Shishkov
*
* 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"
typedef struct RCVContext {
int frames;
} RCVContext;
static int vc1test_write_header(AVFormatContext *s)
{
AVCodecContext *avc = s->streams[0]->codec;
ByteIOContext *pb = s->pb;
if (avc->codec_id != CODEC_ID_WMV3) {
av_log(s, AV_LOG_ERROR, "Only WMV3 is accepted!\n");
return -1;
}
put_le24(pb, 0); //frames count will be here
put_byte(pb, 0xC5);
put_le32(pb, 4);
put_buffer(pb, avc->extradata, 4);
put_le32(pb, avc->height);
put_le32(pb, avc->width);
put_le32(pb, 0xC);
put_le24(pb, 0); // hrd_buffer
put_byte(pb, 0x80); // level|cbr|res1
put_le32(pb, 0); // hrd_rate
if (s->streams[0]->r_frame_rate.den && s->streams[0]->r_frame_rate.num == 1)
put_le32(pb, s->streams[0]->r_frame_rate.den);
else
put_le32(pb, 0xFFFFFFFF); //variable framerate
return 0;
}
static int vc1test_write_packet(AVFormatContext *s, AVPacket *pkt)
{
RCVContext *ctx = s->priv_data;
ByteIOContext *pb = s->pb;
uint32_t pts = av_rescale(pkt->pts,
1000 * (uint64_t)s->streams[0]->time_base.num,
s->streams[0]->time_base.den);
if (!pkt->size)
return 0;
put_le32(pb, pkt->size | ((pkt->flags & AV_PKT_FLAG_KEY) ? 0x80000000 : 0));
put_le32(pb, pts);
put_buffer(pb, pkt->data, pkt->size);
put_flush_packet(pb);
ctx->frames++;
return 0;
}
static int vc1test_write_trailer(AVFormatContext *s)
{
RCVContext *ctx = s->priv_data;
ByteIOContext *pb = s->pb;
if (!url_is_streamed(s->pb)) {
url_fseek(pb, 0, SEEK_SET);
put_le24(pb, ctx->frames);
put_flush_packet(pb);
}
return 0;
}
AVOutputFormat ff_vc1t_muxer = {
"rcv",
NULL_IF_CONFIG_SMALL("VC-1 test bitstream"),
"",
"rcv",
sizeof(RCVContext),
CODEC_ID_NONE,
CODEC_ID_WMV3,
vc1test_write_header,
vc1test_write_packet,
vc1test_write_trailer,
};
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