2 * VC-1 test bitstreams format muxer.
3 * Copyright (c) 2008 Konstantin Shishkov
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24 typedef struct RCVContext
{
28 static int vc1test_write_header(AVFormatContext
*s
)
30 AVCodecContext
*avc
= s
->streams
[0]->codec
;
31 AVIOContext
*pb
= s
->pb
;
33 if (avc
->codec_id
!= AV_CODEC_ID_WMV3
) {
34 av_log(s
, AV_LOG_ERROR
, "Only WMV3 is accepted!\n");
37 avio_wl24(pb
, 0); //frames count will be here
40 avio_write(pb
, avc
->extradata
, 4);
41 avio_wl32(pb
, avc
->height
);
42 avio_wl32(pb
, avc
->width
);
44 avio_wl24(pb
, 0); // hrd_buffer
45 avio_w8(pb
, 0x80); // level|cbr|res1
46 avio_wl32(pb
, 0); // hrd_rate
47 if (s
->streams
[0]->avg_frame_rate
.den
&& s
->streams
[0]->avg_frame_rate
.num
== 1)
48 avio_wl32(pb
, s
->streams
[0]->avg_frame_rate
.den
);
50 avio_wl32(pb
, 0xFFFFFFFF); //variable framerate
51 avpriv_set_pts_info(s
->streams
[0], 32, 1, 1000);
56 static int vc1test_write_packet(AVFormatContext
*s
, AVPacket
*pkt
)
58 RCVContext
*ctx
= s
->priv_data
;
59 AVIOContext
*pb
= s
->pb
;
63 avio_wl32(pb
, pkt
->size
| ((pkt
->flags
& AV_PKT_FLAG_KEY
) ? 0x80000000 : 0));
64 avio_wl32(pb
, pkt
->pts
);
65 avio_write(pb
, pkt
->data
, pkt
->size
);
71 static int vc1test_write_trailer(AVFormatContext
*s
)
73 RCVContext
*ctx
= s
->priv_data
;
74 AVIOContext
*pb
= s
->pb
;
76 if (s
->pb
->seekable
) {
77 avio_seek(pb
, 0, SEEK_SET
);
78 avio_wl24(pb
, ctx
->frames
);
84 AVOutputFormat ff_vc1t_muxer
= {
86 .long_name
= NULL_IF_CONFIG_SMALL("VC-1 test bitstream"),
88 .priv_data_size
= sizeof(RCVContext
),
89 .audio_codec
= AV_CODEC_ID_NONE
,
90 .video_codec
= AV_CODEC_ID_WMV3
,
91 .write_header
= vc1test_write_header
,
92 .write_packet
= vc1test_write_packet
,
93 .write_trailer
= vc1test_write_trailer
,