2 * RAW Ingenient MJPEG demuxer
3 * Copyright (c) 2005 Alex Beregszaszi
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
25 // http://www.artificis.hu/files/texts/ingenient.txt
26 static int ingenient_read_packet(AVFormatContext *s, AVPacket *pkt)
28 int ret, size, w, h, unk1, unk2;
30 if (avio_rl32(s->pb) != MKTAG('M', 'J', 'P', 'G'))
31 return AVERROR(EIO); // FIXME
33 size = avio_rl32(s->pb);
38 avio_skip(s->pb, 8); // zero + size (padded?)
40 unk1 = avio_rl16(s->pb);
41 unk2 = avio_rl16(s->pb);
42 avio_skip(s->pb, 22); // ASCII timestamp
44 av_log(s, AV_LOG_DEBUG, "Ingenient packet: size=%d, width=%d, height=%d, unk1=%d unk2=%d\n",
45 size, w, h, unk1, unk2);
47 if (av_new_packet(pkt, size) < 0)
48 return AVERROR(ENOMEM);
50 pkt->pos = avio_tell(s->pb);
51 pkt->stream_index = 0;
52 ret = avio_read(s->pb, pkt->data, size);
61 AVInputFormat ff_ingenient_demuxer = {
63 NULL_IF_CONFIG_SMALL("raw Ingenient MJPEG"),
66 ff_raw_video_read_header,
67 ingenient_read_packet,
68 .flags= AVFMT_GENERIC_INDEX,
69 .extensions = "cgi", // FIXME
70 .value = CODEC_ID_MJPEG,