blob: 18c968395ba38ae3622ea60c908c3d53241df770
1 | /* |
2 | * Renderware TeXture Dictionary (.txd) demuxer |
3 | * Copyright (c) 2007 Ivo van Poorten |
4 | * |
5 | * This file is part of FFmpeg. |
6 | * |
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. |
11 | * |
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. |
16 | * |
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 |
20 | */ |
21 | |
22 | #include "libavutil/intreadwrite.h" |
23 | #include "avformat.h" |
24 | #include "internal.h" |
25 | |
26 | #define TXD_FILE 0x16 |
27 | #define TXD_INFO 0x01 |
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 |
33 | |
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; |
38 | return 0; |
39 | } |
40 | |
41 | static int txd_read_header(AVFormatContext *s) { |
42 | AVStream *st; |
43 | |
44 | st = avformat_new_stream(s, NULL); |
45 | if (!st) |
46 | return AVERROR(ENOMEM); |
47 | st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO; |
48 | st->codecpar->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 */ |
52 | |
53 | return 0; |
54 | } |
55 | |
56 | static int txd_read_packet(AVFormatContext *s, AVPacket *pkt) { |
57 | AVIOContext *pb = s->pb; |
58 | unsigned int id, chunk_size, marker; |
59 | int ret; |
60 | |
61 | next_chunk: |
62 | id = avio_rl32(pb); |
63 | chunk_size = avio_rl32(pb); |
64 | marker = avio_rl32(pb); |
65 | |
66 | if (avio_feof(s->pb)) |
67 | return AVERROR_EOF; |
68 | if (marker != TXD_MARKER && marker != TXD_MARKER2) { |
69 | av_log(s, AV_LOG_ERROR, "marker does not match\n"); |
70 | return AVERROR_INVALIDDATA; |
71 | } |
72 | |
73 | switch (id) { |
74 | case TXD_INFO: |
75 | if (chunk_size > 100) |
76 | break; |
77 | case TXD_EXTRA: |
78 | avio_skip(s->pb, chunk_size); |
79 | case TXD_FILE: |
80 | case TXD_TEXTURE: |
81 | goto next_chunk; |
82 | default: |
83 | av_log(s, AV_LOG_ERROR, "unknown chunk id %i\n", id); |
84 | return AVERROR_INVALIDDATA; |
85 | } |
86 | |
87 | ret = av_get_packet(s->pb, pkt, chunk_size); |
88 | if (ret < 0) |
89 | return ret; |
90 | pkt->stream_index = 0; |
91 | |
92 | return 0; |
93 | } |
94 | |
95 | AVInputFormat ff_txd_demuxer = { |
96 | .name = "txd", |
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, |
101 | }; |
102 |