yading@11: /*
yading@11:  * RAW Ingenient MJPEG demuxer
yading@11:  * Copyright (c) 2005 Alex Beregszaszi
yading@11:  *
yading@11:  * This file is part of FFmpeg.
yading@11:  *
yading@11:  * FFmpeg is free software; you can redistribute it and/or
yading@11:  * modify it under the terms of the GNU Lesser General Public
yading@11:  * License as published by the Free Software Foundation; either
yading@11:  * version 2.1 of the License, or (at your option) any later version.
yading@11:  *
yading@11:  * FFmpeg is distributed in the hope that it will be useful,
yading@11:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
yading@11:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
yading@11:  * Lesser General Public License for more details.
yading@11:  *
yading@11:  * You should have received a copy of the GNU Lesser General Public
yading@11:  * License along with FFmpeg; if not, write to the Free Software
yading@11:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
yading@11:  */
yading@11: 
yading@11: #include "avformat.h"
yading@11: #include "rawdec.h"
yading@11: 
yading@11: // http://www.artificis.hu/files/texts/ingenient.txt
yading@11: static int ingenient_read_packet(AVFormatContext *s, AVPacket *pkt)
yading@11: {
yading@11:     int ret, size, w, h, unk1, unk2;
yading@11: 
yading@11:     if (avio_rl32(s->pb) != MKTAG('M', 'J', 'P', 'G'))
yading@11:         return AVERROR(EIO); // FIXME
yading@11: 
yading@11:     size = avio_rl32(s->pb);
yading@11: 
yading@11:     w = avio_rl16(s->pb);
yading@11:     h = avio_rl16(s->pb);
yading@11: 
yading@11:     avio_skip(s->pb, 8); // zero + size (padded?)
yading@11:     avio_skip(s->pb, 2);
yading@11:     unk1 = avio_rl16(s->pb);
yading@11:     unk2 = avio_rl16(s->pb);
yading@11:     avio_skip(s->pb, 22); // ASCII timestamp
yading@11: 
yading@11:     av_log(s, AV_LOG_DEBUG, "Ingenient packet: size=%d, width=%d, height=%d, unk1=%d unk2=%d\n",
yading@11:         size, w, h, unk1, unk2);
yading@11: 
yading@11:     ret = av_get_packet(s->pb, pkt, size);
yading@11:     if (ret < 0)
yading@11:         return ret;
yading@11:     pkt->stream_index = 0;
yading@11:     return ret;
yading@11: }
yading@11: 
yading@11: FF_RAWVIDEO_DEMUXER_CLASS(ingenient)
yading@11: 
yading@11: AVInputFormat ff_ingenient_demuxer = {
yading@11:     .name           = "ingenient",
yading@11:     .long_name      = NULL_IF_CONFIG_SMALL("raw Ingenient MJPEG"),
yading@11:     .priv_data_size = sizeof(FFRawVideoDemuxerContext),
yading@11:     .read_header    = ff_raw_video_read_header,
yading@11:     .read_packet    = ingenient_read_packet,
yading@11:     .flags          = AVFMT_GENERIC_INDEX,
yading@11:     .extensions     = "cgi", // FIXME
yading@11:     .raw_codec_id   = AV_CODEC_ID_MJPEG,
yading@11:     .priv_class     = &ingenient_demuxer_class,
yading@11: };