2 * Renderware TeXture Dictionary (.txd) demuxer
3 * Copyright (c) 2007 Ivo van Poorten
5 * This file is part of Libav.
7 * Libav 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 * Libav 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 Libav; 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 */
55 static int txd_read_packet(AVFormatContext *s, AVPacket *pkt) {
56 AVIOContext *pb = s->pb;
57 unsigned int id, chunk_size, marker;
62 chunk_size = avio_rl32(pb);
63 marker = avio_rl32(pb);
65 if (s->pb->eof_reached)
67 if (marker != TXD_MARKER && marker != TXD_MARKER2) {
68 av_log(s, AV_LOG_ERROR, "marker does not match\n");
69 return AVERROR_INVALIDDATA;
77 avio_skip(s->pb, chunk_size);
82 av_log(s, AV_LOG_ERROR, "unknown chunk id %i\n", id);
83 return AVERROR_INVALIDDATA;
86 ret = av_get_packet(s->pb, pkt, chunk_size);
89 pkt->stream_index = 0;
94 AVInputFormat ff_txd_demuxer = {
96 .long_name = NULL_IF_CONFIG_SMALL("Renderware TeXture Dictionary"),
97 .read_probe = txd_probe,
98 .read_header = txd_read_header,
99 .read_packet = txd_read_packet,