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(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
->codec
->codec_type
= AVMEDIA_TYPE_VIDEO
;
49 st
->codec
->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");
100 av_log(s
, AV_LOG_ERROR
, "Truncated packet! Read %d of %d bytes\n",
102 pkt
->flags
|= AV_PKT_FLAG_CORRUPT
;
106 pkt
->stream_index
= 0;
111 AVInputFormat ff_iv8_demuxer
= {
113 .long_name
= NULL_IF_CONFIG_SMALL("IndigoVision 8000 video"),
115 .read_header
= read_header
,
116 .read_packet
= read_packet
,
117 .flags
= AVFMT_GENERIC_INDEX
,