| /* |
| * id RoQ (.roq) File muxer |
| * Copyright (c) 2007 Vitor Sessak |
| * |
| * 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" |
| #include "rawenc.h" |
| |
| |
| static int roq_write_header(struct AVFormatContext *s) |
| { |
| uint8_t header[] = { |
| 0x84, 0x10, 0xFF, 0xFF, 0xFF, 0xFF, /* fps: */ 0x1E, 0x00 |
| }; |
| int n; |
| |
| // set the actual fps |
| for(n=0;n<s->nb_streams;n++) { |
| if (s->streams[n]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) { |
| unsigned int fps; |
| |
| if (s->streams[n]->avg_frame_rate.den != 1) { |
| av_log(s, AV_LOG_ERROR, "Frame rate must be integer\n"); |
| return AVERROR(EINVAL); |
| } |
| |
| if ((fps=s->streams[n]->avg_frame_rate.num) > 255) { |
| av_log(s, AV_LOG_ERROR, "Frame rate may not exceed 255fps\n"); |
| return AVERROR(EINVAL); |
| } |
| |
| if (fps != 30) { |
| av_log(s, AV_LOG_WARNING, "For vintage compatibility fps must be 30\n"); |
| } |
| |
| header[6] = fps; |
| break; |
| } |
| } |
| |
| avio_write(s->pb, header, 8); |
| |
| return 0; |
| } |
| |
| AVOutputFormat ff_roq_muxer = { |
| .name = "roq", |
| .long_name = NULL_IF_CONFIG_SMALL("raw id RoQ"), |
| .extensions = "roq", |
| .audio_codec = AV_CODEC_ID_ROQ_DPCM, |
| .video_codec = AV_CODEC_ID_ROQ, |
| .write_header = roq_write_header, |
| .write_packet = ff_raw_write_packet, |
| }; |