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94 lines
2.6 KiB
94 lines
2.6 KiB
/* |
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* VC-1 test bitstreams format muxer. |
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* Copyright (c) 2008 Konstantin Shishkov |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include "avformat.h" |
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typedef struct RCVContext { |
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int frames; |
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} RCVContext; |
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static int vc1test_write_header(AVFormatContext *s) |
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{ |
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AVCodecContext *avc = s->streams[0]->codec; |
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ByteIOContext *pb = s->pb; |
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if (avc->codec_id != CODEC_ID_WMV3) { |
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av_log(s, AV_LOG_ERROR, "Only WMV3 is accepted!\n"); |
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return -1; |
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} |
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put_le24(pb, 0); //frames count will be here |
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put_byte(pb, 0xC5); |
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put_le32(pb, 4); |
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put_buffer(pb, avc->extradata, 4); |
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put_le32(pb, avc->height); |
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put_le32(pb, avc->width); |
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put_le32(pb, 0xC); |
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put_le24(pb, 0); // hrd_buffer |
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put_byte(pb, 0x80); // level|cbr|res1 |
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put_le32(pb, 0); // hrd_rate |
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if (s->streams[0]->r_frame_rate.den && s->streams[0]->r_frame_rate.num == 1) |
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put_le32(pb, s->streams[0]->r_frame_rate.den); |
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else |
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put_le32(pb, 0xFFFFFFFF); //variable framerate |
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return 0; |
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} |
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static int vc1test_write_packet(AVFormatContext *s, AVPacket *pkt) |
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{ |
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RCVContext *ctx = s->priv_data; |
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ByteIOContext *pb = s->pb; |
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if (!pkt->size) |
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return 0; |
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put_le32(pb, pkt->size | ((pkt->flags & PKT_FLAG_KEY) ? 0x80000000 : 0)); |
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put_le32(pb, pkt->pts); |
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put_buffer(pb, pkt->data, pkt->size); |
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put_flush_packet(pb); |
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ctx->frames++; |
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return 0; |
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} |
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static int vc1test_write_trailer(AVFormatContext *s) |
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{ |
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RCVContext *ctx = s->priv_data; |
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ByteIOContext *pb = s->pb; |
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if (!url_is_streamed(s->pb)) { |
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url_fseek(pb, 0, SEEK_SET); |
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put_le24(pb, ctx->frames); |
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put_flush_packet(pb); |
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} |
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return 0; |
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} |
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AVOutputFormat vc1t_muxer = { |
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"rcv", |
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NULL_IF_CONFIG_SMALL("VC-1 test bitstream"), |
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"", |
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"rcv", |
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sizeof(RCVContext), |
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CODEC_ID_NONE, |
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CODEC_ID_WMV3, |
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vc1test_write_header, |
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vc1test_write_packet, |
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vc1test_write_trailer, |
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};
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