mpegvideo: Use the current_picture pts
[libav.git] / libavformat / txd.c
1 /*
2 * Renderware TeXture Dictionary (.txd) demuxer
3 * Copyright (c) 2007 Ivo van Poorten
4 *
5 * This file is part of Libav.
6 *
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.
11 *
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.
16 *
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
20 */
21
22 #include "libavutil/intreadwrite.h"
23 #include "avformat.h"
24
25 #define TXD_FILE 0x16
26 #define TXD_INFO 0x01
27 #define TXD_EXTRA 0x03
28 #define TXD_TEXTURE 0x15
29 #define TXD_TEXTURE_DATA 0x01
30 #define TXD_MARKER 0x1803ffff
31 #define TXD_MARKER2 0x1003ffff
32
33 static int txd_probe(AVProbeData * pd) {
34 if (AV_RL32(pd->buf ) == TXD_FILE &&
35 (AV_RL32(pd->buf+8) == TXD_MARKER || AV_RL32(pd->buf+8) == TXD_MARKER2))
36 return AVPROBE_SCORE_MAX;
37 return 0;
38 }
39
40 static int txd_read_header(AVFormatContext *s) {
41 AVStream *st;
42
43 st = avformat_new_stream(s, NULL);
44 if (!st)
45 return AVERROR(ENOMEM);
46 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
47 st->codec->codec_id = AV_CODEC_ID_TXD;
48 st->codec->time_base.den = 5;
49 st->codec->time_base.num = 1;
50 /* the parameters will be extracted from the compressed bitstream */
51 return 0;
52 }
53
54 static int txd_read_packet(AVFormatContext *s, AVPacket *pkt) {
55 AVIOContext *pb = s->pb;
56 unsigned int id, chunk_size, marker;
57 int ret;
58
59 next_chunk:
60 id = avio_rl32(pb);
61 chunk_size = avio_rl32(pb);
62 marker = avio_rl32(pb);
63
64 if (s->pb->eof_reached)
65 return AVERROR_EOF;
66 if (marker != TXD_MARKER && marker != TXD_MARKER2) {
67 av_log(s, AV_LOG_ERROR, "marker does not match\n");
68 return AVERROR_INVALIDDATA;
69 }
70
71 switch (id) {
72 case TXD_INFO:
73 if (chunk_size > 100)
74 break;
75 case TXD_EXTRA:
76 avio_skip(s->pb, chunk_size);
77 case TXD_FILE:
78 case TXD_TEXTURE:
79 goto next_chunk;
80 default:
81 av_log(s, AV_LOG_ERROR, "unknown chunk id %i\n", id);
82 return AVERROR_INVALIDDATA;
83 }
84
85 ret = av_get_packet(s->pb, pkt, chunk_size);
86 if (ret < 0)
87 return ret;
88 pkt->stream_index = 0;
89
90 return 0;
91 }
92
93 AVInputFormat ff_txd_demuxer = {
94 .name = "txd",
95 .long_name = NULL_IF_CONFIG_SMALL("Renderware TeXture Dictionary"),
96 .read_probe = txd_probe,
97 .read_header = txd_read_header,
98 .read_packet = txd_read_packet,
99 };