1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
|
/* ScummVM - Scumm Interpreter
* Copyright (C) 2003 The ScummVM project
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* $Header$
*
*/
#include "stdafx.h"
#include "sound/vorbis.h"
#include "common/file.h"
#include "common/util.h"
#ifdef USE_VORBIS
// These are wrapper functions to allow using a File object to
// provide data to the OggVorbis_File object.
struct file_info {
File *file;
int start, curr_pos;
size_t len;
};
static size_t read_wrap(void *ptr, size_t size, size_t nmemb, void *datasource) {
file_info *f = (file_info *) datasource;
int result;
nmemb *= size;
if (f->curr_pos > (int) f->len)
nmemb = 0;
else if (nmemb > f->len - f->curr_pos)
nmemb = f->len - f->curr_pos;
result = f->file->read(ptr, nmemb);
if (result == -1) {
f->curr_pos = f->file->pos() - f->start;
return (size_t) -1;
} else {
f->curr_pos += result;
return result / size;
}
}
static int seek_wrap(void *datasource, ogg_int64_t offset, int whence) {
file_info *f = (file_info *) datasource;
if (whence == SEEK_SET)
offset += f->start;
else if (whence == SEEK_END) {
offset += f->start + f->len;
whence = SEEK_SET;
}
f->file->seek(offset, whence);
f->curr_pos = f->file->pos() - f->start;
return f->curr_pos;
}
static int close_wrap(void *datasource) {
file_info *f = (file_info *) datasource;
f->file->close();
delete f;
return 0;
}
static long tell_wrap(void *datasource) {
file_info *f = (file_info *) datasource;
return f->curr_pos;
}
static ov_callbacks g_File_wrap = {
read_wrap, seek_wrap, close_wrap, tell_wrap
};
#endif
#ifdef USE_VORBIS
VorbisTrackInfo::VorbisTrackInfo(File *file) {
file_info *f = new file_info;
f->file = file;
f->start = 0;
f->len = file->size();
f->curr_pos = file->pos();
if (ov_open_callbacks((void *) f, &_ov_file, NULL, 0, g_File_wrap) < 0) {
warning("Invalid file format");
_error_flag = true;
delete f;
delete file;
} else {
_error_flag = false;
_file = file;
}
}
#ifdef CHUNKSIZE
#define VORBIS_TREMOR
#endif
int VorbisTrackInfo::play(SoundMixer *mixer, PlayingSoundHandle *handle, int startFrame, int duration) {
#ifdef VORBIS_TREMOR
ov_time_seek(&_ov_file, (ogg_int64_t)(startFrame / 75.0 * 1000));
#else
ov_time_seek(&_ov_file, startFrame / 75.0);
#endif
return mixer->playVorbis(handle, &_ov_file,
duration * ov_info(&_ov_file, -1)->rate / 75, true);
}
VorbisTrackInfo::~VorbisTrackInfo() {
if (! _error_flag) {
ov_clear(&_ov_file);
delete _file;
}
}
void playSfxSound_Vorbis(SoundMixer *mixer, File *file, uint32 size, PlayingSoundHandle *handle) {
OggVorbis_File *ov_file = new OggVorbis_File;
file_info *f = new file_info;
f->file = file;
f->start = file->pos();
f->len = size;
f->curr_pos = 0;
if (ov_open_callbacks((void *) f, ov_file, NULL, 0, g_File_wrap) < 0) {
warning("Invalid file format");
delete ov_file;
delete f;
} else
mixer->playVorbis(handle, ov_file, 0, false);
}
#endif
|
