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