/* * 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; AVCodecContext *avctx; // set the actual fps for(n=0;n<s->nb_streams;n++) { if ((avctx=s->streams[n]->codec)->codec_type == AVMEDIA_TYPE_VIDEO) { unsigned int fps; if (avctx->time_base.num != 1) { av_log(avctx, AV_LOG_ERROR, "Frame rate must be integer\n"); return AVERROR(EINVAL); } if ((fps=avctx->time_base.den) > 255) { av_log(avctx, AV_LOG_ERROR, "Frame rate may not exceed 255fps\n"); return AVERROR(EINVAL); } if (fps != 30) { av_log(avctx, AV_LOG_WARNING, "For vintage compatibility fps must be 30\n"); } header[6] = fps; break; } } avio_write(s->pb, header, 8); avio_flush(s->pb); 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, };