Fix wrong error message.
[libav.git] / libavformat / txd.c
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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 "avformat.h"
23
24#define TXD_FILE 0x16
25#define TXD_INFO 0x01
26#define TXD_EXTRA 0x03
27#define TXD_TEXTURE 0x15
28#define TXD_TEXTURE_DATA 0x01
29#define TXD_MARKER 0x1803ffff
30#define TXD_MARKER2 0x1003ffff
31
32static int txd_probe(AVProbeData * pd) {
33 if (AV_RL32(pd->buf ) == TXD_FILE &&
34 (AV_RL32(pd->buf+8) == TXD_MARKER || AV_RL32(pd->buf+8) == TXD_MARKER2))
35 return AVPROBE_SCORE_MAX;
36 return 0;
37}
38
39static int txd_read_header(AVFormatContext *s, AVFormatParameters *ap) {
40 AVStream *st;
41
42 st = av_new_stream(s, 0);
43 if (!st)
769e10f0 44 return AVERROR(ENOMEM);
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45 st->codec->codec_type = CODEC_TYPE_VIDEO;
46 st->codec->codec_id = CODEC_ID_TXD;
47 st->codec->time_base.den = 5;
48 st->codec->time_base.num = 1;
49 /* the parameters will be extracted from the compressed bitstream */
50 return 0;
51}
52
53static int txd_read_packet(AVFormatContext *s, AVPacket *pkt) {
54 ByteIOContext *pb = &s->pb;
55 unsigned int id, chunk_size, marker;
56 int ret;
57
58next_chunk:
59 id = get_le32(pb);
60 chunk_size = get_le32(pb);
61 marker = get_le32(pb);
62
63 if (url_feof(&s->pb))
6f3e0b21 64 return AVERROR(EIO);
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65 if (marker != TXD_MARKER && marker != TXD_MARKER2) {
66 av_log(NULL, AV_LOG_ERROR, "marker does not match\n");
6f3e0b21 67 return AVERROR(EIO);
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68 }
69
70 switch (id) {
71 case TXD_INFO:
72 if (chunk_size > 100)
73 break;
74 case TXD_EXTRA:
75 url_fskip(&s->pb, chunk_size);
76 case TXD_FILE:
77 case TXD_TEXTURE:
78 goto next_chunk;
79 default:
80 av_log(NULL, AV_LOG_ERROR, "unknown chunk id %i\n", id);
6f3e0b21 81 return AVERROR(EIO);
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82 }
83
84 ret = av_get_packet(&s->pb, pkt, chunk_size);
85 pkt->stream_index = 0;
86
6f3e0b21 87 return ret <= 0 ? AVERROR(EIO) : ret;
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88}
89
90static int txd_read_close(AVFormatContext *s) {
91 return 0;
92}
93
94AVInputFormat txd_demuxer =
95{
96 "txd",
97 "txd format",
98 0,
99 txd_probe,
100 txd_read_header,
101 txd_read_packet,
102 txd_read_close,
103};