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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 6148 | serge | 1 | /* |
| 2 | * VC-1 test bitstreams format muxer. |
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| 3 | * Copyright (c) 2008 Konstantin Shishkov |
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| 4 | * |
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| 5 | * This file is part of FFmpeg. |
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| 6 | * |
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| 7 | * FFmpeg is free software; you can redistribute it and/or |
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| 8 | * modify it under the terms of the GNU Lesser General Public |
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| 9 | * License as published by the Free Software Foundation; either |
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| 10 | * version 2.1 of the License, or (at your option) any later version. |
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| 11 | * |
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| 12 | * FFmpeg is distributed in the hope that it will be useful, |
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 15 | * Lesser General Public License for more details. |
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| 16 | * |
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| 17 | * You should have received a copy of the GNU Lesser General Public |
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| 18 | * License along with FFmpeg; if not, write to the Free Software |
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| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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| 20 | */ |
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| 21 | #include "avformat.h" |
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| 22 | #include "internal.h" |
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| 23 | |||
| 24 | typedef struct RCVContext { |
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| 25 | int frames; |
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| 26 | } RCVContext; |
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| 27 | |||
| 28 | static int vc1test_write_header(AVFormatContext *s) |
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| 29 | { |
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| 30 | AVCodecContext *avc = s->streams[0]->codec; |
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| 31 | AVIOContext *pb = s->pb; |
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| 32 | |||
| 33 | if (avc->codec_id != AV_CODEC_ID_WMV3) { |
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| 34 | av_log(s, AV_LOG_ERROR, "Only WMV3 is accepted!\n"); |
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| 35 | return -1; |
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| 36 | } |
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| 37 | avio_wl24(pb, 0); //frames count will be here |
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| 38 | avio_w8(pb, 0xC5); |
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| 39 | avio_wl32(pb, 4); |
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| 40 | avio_write(pb, avc->extradata, 4); |
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| 41 | avio_wl32(pb, avc->height); |
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| 42 | avio_wl32(pb, avc->width); |
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| 43 | avio_wl32(pb, 0xC); |
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| 44 | avio_wl24(pb, 0); // hrd_buffer |
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| 45 | avio_w8(pb, 0x80); // level|cbr|res1 |
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| 46 | avio_wl32(pb, 0); // hrd_rate |
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| 47 | if (s->streams[0]->avg_frame_rate.den && s->streams[0]->avg_frame_rate.num == 1) |
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| 48 | avio_wl32(pb, s->streams[0]->avg_frame_rate.den); |
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| 49 | else |
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| 50 | avio_wl32(pb, 0xFFFFFFFF); //variable framerate |
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| 51 | avpriv_set_pts_info(s->streams[0], 32, 1, 1000); |
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| 52 | |||
| 53 | return 0; |
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| 54 | } |
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| 55 | |||
| 56 | static int vc1test_write_packet(AVFormatContext *s, AVPacket *pkt) |
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| 57 | { |
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| 58 | RCVContext *ctx = s->priv_data; |
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| 59 | AVIOContext *pb = s->pb; |
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| 60 | |||
| 61 | if (!pkt->size) |
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| 62 | return 0; |
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| 63 | avio_wl32(pb, pkt->size | ((pkt->flags & AV_PKT_FLAG_KEY) ? 0x80000000 : 0)); |
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| 64 | avio_wl32(pb, pkt->pts); |
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| 65 | avio_write(pb, pkt->data, pkt->size); |
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| 66 | ctx->frames++; |
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| 67 | |||
| 68 | return 0; |
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| 69 | } |
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| 70 | |||
| 71 | static int vc1test_write_trailer(AVFormatContext *s) |
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| 72 | { |
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| 73 | RCVContext *ctx = s->priv_data; |
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| 74 | AVIOContext *pb = s->pb; |
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| 75 | |||
| 76 | if (s->pb->seekable) { |
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| 77 | avio_seek(pb, 0, SEEK_SET); |
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| 78 | avio_wl24(pb, ctx->frames); |
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| 79 | avio_flush(pb); |
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| 80 | } |
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| 81 | return 0; |
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| 82 | } |
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| 83 | |||
| 84 | AVOutputFormat ff_vc1t_muxer = { |
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| 85 | .name = "vc1test", |
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| 86 | .long_name = NULL_IF_CONFIG_SMALL("VC-1 test bitstream"), |
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| 87 | .extensions = "rcv", |
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| 88 | .priv_data_size = sizeof(RCVContext), |
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| 89 | .audio_codec = AV_CODEC_ID_NONE, |
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| 90 | .video_codec = AV_CODEC_ID_WMV3, |
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| 91 | .write_header = vc1test_write_header, |
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| 92 | .write_packet = vc1test_write_packet, |
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| 93 | .write_trailer = vc1test_write_trailer, |
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| 94 | }; |