FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavformat/txd.c
Date: 2024-03-29 01:21:52
Exec Total Coverage
Lines: 33 40 82.5%
Functions: 3 3 100.0%
Branches: 17 22 77.3%

Line Branch Exec Source
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 "demux.h"
25 #include "internal.h"
26
27 #define TXD_FILE 0x16
28 #define TXD_INFO 0x01
29 #define TXD_EXTRA 0x03
30 #define TXD_TEXTURE 0x15
31 #define TXD_TEXTURE_DATA 0x01
32 #define TXD_MARKER 0x1803ffff
33 #define TXD_MARKER2 0x1003ffff
34
35 7124 static int txd_probe(const AVProbeData * pd) {
36
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7124 if (AV_RL32(pd->buf ) == TXD_FILE &&
37
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3 (AV_RL32(pd->buf+8) == TXD_MARKER || AV_RL32(pd->buf+8) == TXD_MARKER2))
38 3 return AVPROBE_SCORE_MAX;
39 7121 return 0;
40 }
41
42 3 static int txd_read_header(AVFormatContext *s) {
43 AVStream *st;
44
45 3 st = avformat_new_stream(s, NULL);
46
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3 if (!st)
47 return AVERROR(ENOMEM);
48 3 st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
49 3 st->codecpar->codec_id = AV_CODEC_ID_TXD;
50 3 avpriv_set_pts_info(st, 64, 1, 5);
51 3 st->avg_frame_rate = av_inv_q(st->time_base);
52 /* the parameters will be extracted from the compressed bitstream */
53
54 3 return 0;
55 }
56
57 19 static int txd_read_packet(AVFormatContext *s, AVPacket *pkt) {
58 19 AVIOContext *pb = s->pb;
59 unsigned int id, chunk_size, marker;
60 int ret;
61
62 54 next_chunk:
63 54 id = avio_rl32(pb);
64 54 chunk_size = avio_rl32(pb);
65 54 marker = avio_rl32(pb);
66
67
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54 if (avio_feof(s->pb))
68 6 return AVERROR_EOF;
69
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48 if (marker != TXD_MARKER && marker != TXD_MARKER2) {
70 av_log(s, AV_LOG_ERROR, "marker does not match\n");
71 return AVERROR_INVALIDDATA;
72 }
73
74
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48 switch (id) {
75 16 case TXD_INFO:
76
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16 if (chunk_size > 100)
77 13 break;
78 case TXD_EXTRA:
79 19 avio_skip(s->pb, chunk_size);
80 35 case TXD_FILE:
81 case TXD_TEXTURE:
82 35 goto next_chunk;
83 default:
84 av_log(s, AV_LOG_ERROR, "unknown chunk id %i\n", id);
85 return AVERROR_INVALIDDATA;
86 }
87
88 13 ret = av_get_packet(s->pb, pkt, chunk_size);
89
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13 if (ret < 0)
90 return ret;
91 13 pkt->stream_index = 0;
92
93 13 return 0;
94 }
95
96 const FFInputFormat ff_txd_demuxer = {
97 .p.name = "txd",
98 .p.long_name = NULL_IF_CONFIG_SMALL("Renderware TeXture Dictionary"),
99 .read_probe = txd_probe,
100 .read_header = txd_read_header,
101 .read_packet = txd_read_packet,
102 };
103