2 * Renderware TeXture Dictionary (.txd) demuxer
3 * Copyright (c) 2007 Ivo van Poorten
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
22 #include "libavutil/intreadwrite.h"
28 #define TXD_EXTRA 0x03
29 #define TXD_TEXTURE 0x15
30 #define TXD_TEXTURE_DATA 0x01
31 #define TXD_MARKER 0x1803ffff
32 #define TXD_MARKER2 0x1003ffff
34 static int txd_probe(AVProbeData
* pd
) {
35 if (AV_RL32(pd
->buf
) == TXD_FILE
&&
36 (AV_RL32(pd
->buf
+8) == TXD_MARKER
|| AV_RL32(pd
->buf
+8) == TXD_MARKER2
))
37 return AVPROBE_SCORE_MAX
;
41 static int txd_read_header(AVFormatContext
*s
) {
44 st
= avformat_new_stream(s
, NULL
);
46 return AVERROR(ENOMEM
);
47 st
->codec
->codec_type
= AVMEDIA_TYPE_VIDEO
;
48 st
->codec
->codec_id
= AV_CODEC_ID_TXD
;
49 avpriv_set_pts_info(st
, 64, 1, 5);
50 st
->avg_frame_rate
= av_inv_q(st
->time_base
);
51 /* the parameters will be extracted from the compressed bitstream */
56 static int txd_read_packet(AVFormatContext
*s
, AVPacket
*pkt
) {
57 AVIOContext
*pb
= s
->pb
;
58 unsigned int id
, chunk_size
, marker
;
63 chunk_size
= avio_rl32(pb
);
64 marker
= avio_rl32(pb
);
68 if (marker
!= TXD_MARKER
&& marker
!= TXD_MARKER2
) {
69 av_log(s
, AV_LOG_ERROR
, "marker does not match\n");
70 return AVERROR_INVALIDDATA
;
78 avio_skip(s
->pb
, chunk_size
);
83 av_log(s
, AV_LOG_ERROR
, "unknown chunk id %i\n", id
);
84 return AVERROR_INVALIDDATA
;
87 ret
= av_get_packet(s
->pb
, pkt
, chunk_size
);
90 pkt
->stream_index
= 0;
95 AVInputFormat ff_txd_demuxer
= {
97 .long_name
= NULL_IF_CONFIG_SMALL("Renderware TeXture Dictionary"),
98 .read_probe
= txd_probe
,
99 .read_header
= txd_read_header
,
100 .read_packet
= txd_read_packet
,