repositories / deb_ffmpeg.git / blame
| Commit | Line | Data |
|---|---|---|
| 2ba45a60 DM |
1 | /* |
| 2 | * RAW Ingenient MJPEG demuxer | |
| 3 | * Copyright (c) 2005 Alex Beregszaszi | |
| 4 | * | |
| 5 | * This file is part of FFmpeg. | |
| 6 | * | |
| 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. | |
| 11 | * | |
| 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. | |
| 16 | * | |
| 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 | |
| 20 | */ | |
| 21 | ||
| 22 | #include "avformat.h" | |
| 23 | #include "rawdec.h" | |
| 24 | ||
| 25 | // http://www.artificis.hu/files/texts/ingenient.txt | |
| 26 | static int ingenient_read_packet(AVFormatContext *s, AVPacket *pkt) | |
| 27 | { | |
| 28 | int ret, size, w, h, unk1, unk2; | |
| 29 | ||
| 30 | if (avio_rl32(s->pb) != MKTAG('M', 'J', 'P', 'G')) | |
| 31 | return AVERROR(EIO); // FIXME | |
| 32 | ||
| 33 | size = avio_rl32(s->pb); | |
| 34 | ||
| 35 | w = avio_rl16(s->pb); | |
| 36 | h = avio_rl16(s->pb); | |
| 37 | ||
| 38 | avio_skip(s->pb, 8); // zero + size (padded?) | |
| 39 | avio_skip(s->pb, 2); | |
| 40 | unk1 = avio_rl16(s->pb); | |
| 41 | unk2 = avio_rl16(s->pb); | |
| 42 | avio_skip(s->pb, 22); // ASCII timestamp | |
| 43 | ||
| 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); | |
| 46 | ||
| 47 | ret = av_get_packet(s->pb, pkt, size); | |
| 48 | if (ret < 0) | |
| 49 | return ret; | |
| 50 | pkt->stream_index = 0; | |
| 51 | return ret; | |
| 52 | } | |
| 53 | ||
| 54 | FF_RAWVIDEO_DEMUXER_CLASS(ingenient) | |
| 55 | ||
| 56 | AVInputFormat ff_ingenient_demuxer = { | |
| 57 | .name = "ingenient", | |
| 58 | .long_name = NULL_IF_CONFIG_SMALL("raw Ingenient MJPEG"), | |
| 59 | .priv_data_size = sizeof(FFRawVideoDemuxerContext), | |
| 60 | .read_header = ff_raw_video_read_header, | |
| 61 | .read_packet = ingenient_read_packet, | |
| 62 | .flags = AVFMT_GENERIC_INDEX, | |
| 63 | .extensions = "cgi", // FIXME | |
| 64 | .raw_codec_id = AV_CODEC_ID_MJPEG, | |
| 65 | .priv_class = &ingenient_demuxer_class, | |
| 66 | }; |