| /* |
| * 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 |
| |
| 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 & 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 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, |
| }; |