blob: cf95d1d80d2f7d0ef3e6109b15579fb6396fa413
1 | /* |
2 | * VC-1 test bitstreams format muxer. |
3 | * Copyright (c) 2008 Konstantin Shishkov |
4 | * |
5 | * This file is part of FFmpeg. |
6 | * |
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. |
11 | * |
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. |
16 | * |
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 |
20 | */ |
21 | #include "avformat.h" |
22 | #include "internal.h" |
23 | |
24 | typedef struct RCVContext { |
25 | int frames; |
26 | } RCVContext; |
27 | |
28 | static int vc1test_write_header(AVFormatContext *s) |
29 | { |
30 | AVCodecParameters *par = s->streams[0]->codecpar; |
31 | AVIOContext *pb = s->pb; |
32 | |
33 | if (par->codec_id != AV_CODEC_ID_WMV3) { |
34 | av_log(s, AV_LOG_ERROR, "Only WMV3 is accepted!\n"); |
35 | return -1; |
36 | } |
37 | avio_wl24(pb, 0); //frames count will be here |
38 | avio_w8(pb, 0xC5); |
39 | avio_wl32(pb, 4); |
40 | avio_write(pb, par->extradata, 4); |
41 | avio_wl32(pb, par->height); |
42 | avio_wl32(pb, par->width); |
43 | avio_wl32(pb, 0xC); |
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); |
49 | else |
50 | avio_wl32(pb, 0xFFFFFFFF); //variable framerate |
51 | avpriv_set_pts_info(s->streams[0], 32, 1, 1000); |
52 | |
53 | return 0; |
54 | } |
55 | |
56 | static int vc1test_write_packet(AVFormatContext *s, AVPacket *pkt) |
57 | { |
58 | RCVContext *ctx = s->priv_data; |
59 | AVIOContext *pb = s->pb; |
60 | |
61 | if (!pkt->size) |
62 | return 0; |
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); |
66 | ctx->frames++; |
67 | |
68 | return 0; |
69 | } |
70 | |
71 | static int vc1test_write_trailer(AVFormatContext *s) |
72 | { |
73 | RCVContext *ctx = s->priv_data; |
74 | AVIOContext *pb = s->pb; |
75 | |
76 | if (s->pb->seekable & AVIO_SEEKABLE_NORMAL) { |
77 | avio_seek(pb, 0, SEEK_SET); |
78 | avio_wl24(pb, ctx->frames); |
79 | avio_flush(pb); |
80 | } |
81 | return 0; |
82 | } |
83 | |
84 | AVOutputFormat ff_vc1t_muxer = { |
85 | .name = "vc1test", |
86 | .long_name = NULL_IF_CONFIG_SMALL("VC-1 test bitstream"), |
87 | .extensions = "rcv", |
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, |
94 | }; |
95 |