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- /*
- * VC-1 test bitstreams format muxer.
- * Copyright (c) 2008 Konstantin Shishkov
- *
- * This file is part of FFmpeg.
- *
- * FFmpeg is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * FFmpeg is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
- #include "avformat.h"
- typedef struct RCVContext {
- int frames;
- } RCVContext;
- static int vc1test_write_header(AVFormatContext *s)
- {
- AVCodecContext *avc = s->streams[0]->codec;
- ByteIOContext *pb = s->pb;
- if (avc->codec_id != CODEC_ID_WMV3) {
- av_log(s, AV_LOG_ERROR, "Only WMV3 is accepted!\n");
- return -1;
- }
- put_le24(pb, 0); //frames count will be here
- put_byte(pb, 0xC5);
- put_le32(pb, 4);
- put_buffer(pb, avc->extradata, 4);
- put_le32(pb, avc->height);
- put_le32(pb, avc->width);
- put_le32(pb, 0xC);
- put_le24(pb, 0); // hrd_buffer
- put_byte(pb, 0x80); // level|cbr|res1
- put_le32(pb, 0); // hrd_rate
- if (s->streams[0]->r_frame_rate.den && s->streams[0]->r_frame_rate.num == 1)
- put_le32(pb, s->streams[0]->r_frame_rate.den);
- else
- put_le32(pb, 0xFFFFFFFF); //variable framerate
- av_set_pts_info(s->streams[0], 32, 1, 1000);
- return 0;
- }
- static int vc1test_write_packet(AVFormatContext *s, AVPacket *pkt)
- {
- RCVContext *ctx = s->priv_data;
- ByteIOContext *pb = s->pb;
- if (!pkt->size)
- return 0;
- put_le32(pb, pkt->size | ((pkt->flags & AV_PKT_FLAG_KEY) ? 0x80000000 : 0));
- put_le32(pb, pkt->pts);
- put_buffer(pb, pkt->data, pkt->size);
- put_flush_packet(pb);
- ctx->frames++;
- return 0;
- }
- static int vc1test_write_trailer(AVFormatContext *s)
- {
- RCVContext *ctx = s->priv_data;
- ByteIOContext *pb = s->pb;
- if (!url_is_streamed(s->pb)) {
- url_fseek(pb, 0, SEEK_SET);
- put_le24(pb, ctx->frames);
- put_flush_packet(pb);
- }
- return 0;
- }
- AVOutputFormat ff_vc1t_muxer = {
- "rcv",
- NULL_IF_CONFIG_SMALL("VC-1 test bitstream"),
- "",
- "rcv",
- sizeof(RCVContext),
- CODEC_ID_NONE,
- CODEC_ID_WMV3,
- vc1test_write_header,
- vc1test_write_packet,
- vc1test_write_trailer,
- };
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