2 * Copyright (c) 2009 Michael Niedermayer
4 * This file is part of FFmpeg.
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
25 static int probe(const AVProbeData *p)
27 // the single file I have starts with that, I do not know if others do, too
35 return AVPROBE_SCORE_MAX-2;
40 static int read_header(AVFormatContext *s)
44 st = avformat_new_stream(s, NULL);
46 return AVERROR(ENOMEM);
48 st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
49 st->codecpar->codec_id = AV_CODEC_ID_MPEG4;
50 st->need_parsing = AVSTREAM_PARSE_FULL;
51 avpriv_set_pts_info(st, 64, 1, 90000);
57 static int read_packet(AVFormatContext *s, AVPacket *pkt)
59 int ret, size, pts, type, flags;
61 int frame_complete = 0;
63 while (!frame_complete) {
65 type = avio_rb16(s->pb); // 257 or 258
66 size = avio_rb16(s->pb);
67 flags = avio_rb16(s->pb); //some flags, 0x80 indicates end of frame
68 avio_rb16(s->pb); //packet number
69 pts = avio_rb32(s->pb);
70 avio_rb32(s->pb); //6A 13 E3 88
72 frame_complete = flags & 0x80;
79 avio_skip(s->pb, size);
85 ret = av_get_packet(s->pb, pkt, size);
92 ret = av_append_packet(s->pb, pkt, size);
94 av_log(s, AV_LOG_ERROR, "failed to grow packet\n");
99 av_log(s, AV_LOG_ERROR, "Truncated packet! Read %d of %d bytes\n",
101 pkt->flags |= AV_PKT_FLAG_CORRUPT;
105 pkt->stream_index = 0;
110 AVInputFormat ff_iv8_demuxer = {
112 .long_name = NULL_IF_CONFIG_SMALL("IndigoVision 8000 video"),
114 .read_header = read_header,
115 .read_packet = read_packet,
116 .flags = AVFMT_GENERIC_INDEX,