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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4349 | Serge | 1 | /* |
| 2 | * Copyright (c) 2010 Reimar Döffinger |
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| 3 | * |
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| 4 | * This file is part of FFmpeg. |
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| 5 | * |
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| 6 | * FFmpeg is free software; you can redistribute it and/or |
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| 7 | * modify it under the terms of the GNU Lesser General Public |
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| 8 | * License as published by the Free Software Foundation; either |
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| 9 | * version 2.1 of the License, or (at your option) any later version. |
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| 10 | * |
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| 11 | * FFmpeg is distributed in the hope that it will be useful, |
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| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 14 | * Lesser General Public License for more details. |
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| 15 | * |
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| 16 | * You should have received a copy of the GNU Lesser General Public |
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| 17 | * License along with FFmpeg; if not, write to the Free Software |
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| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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| 19 | */ |
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| 20 | #include "avformat.h" |
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| 21 | #include "libavutil/intreadwrite.h" |
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| 22 | |||
| 23 | static int ivf_write_header(AVFormatContext *s) |
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| 24 | { |
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| 25 | AVCodecContext *ctx; |
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| 26 | AVIOContext *pb = s->pb; |
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| 27 | |||
| 28 | if (s->nb_streams != 1) { |
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| 29 | av_log(s, AV_LOG_ERROR, "Format supports only exactly one video stream\n"); |
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| 30 | return AVERROR(EINVAL); |
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| 31 | } |
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| 32 | ctx = s->streams[0]->codec; |
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| 33 | if (ctx->codec_type != AVMEDIA_TYPE_VIDEO || ctx->codec_id != AV_CODEC_ID_VP8) { |
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| 34 | av_log(s, AV_LOG_ERROR, "Currently only VP8 is supported!\n"); |
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| 35 | return AVERROR(EINVAL); |
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| 36 | } |
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| 37 | avio_write(pb, "DKIF", 4); |
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| 38 | avio_wl16(pb, 0); // version |
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| 39 | avio_wl16(pb, 32); // header length |
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| 40 | avio_wl32(pb, ctx->codec_tag ? ctx->codec_tag : AV_RL32("VP80")); |
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| 41 | avio_wl16(pb, ctx->width); |
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| 42 | avio_wl16(pb, ctx->height); |
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| 43 | avio_wl32(pb, s->streams[0]->time_base.den); |
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| 44 | avio_wl32(pb, s->streams[0]->time_base.num); |
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| 45 | avio_wl64(pb, s->streams[0]->duration); // TODO: duration or number of frames?!? |
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| 46 | |||
| 47 | return 0; |
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| 48 | } |
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| 49 | |||
| 50 | static int ivf_write_packet(AVFormatContext *s, AVPacket *pkt) |
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| 51 | { |
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| 52 | AVIOContext *pb = s->pb; |
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| 53 | avio_wl32(pb, pkt->size); |
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| 54 | avio_wl64(pb, pkt->pts); |
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| 55 | avio_write(pb, pkt->data, pkt->size); |
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| 56 | |||
| 57 | return 0; |
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| 58 | } |
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| 59 | |||
| 60 | AVOutputFormat ff_ivf_muxer = { |
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| 61 | .name = "ivf", |
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| 62 | .long_name = NULL_IF_CONFIG_SMALL("On2 IVF"), |
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| 63 | .extensions = "ivf", |
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| 64 | .audio_codec = AV_CODEC_ID_NONE, |
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| 65 | .video_codec = AV_CODEC_ID_VP8, |
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| 66 | .write_header = ivf_write_header, |
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| 67 | .write_packet = ivf_write_packet, |
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| 68 | }; |