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
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
|
/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
/*
* This code is based on Labyrinth of Time code with assistance of
*
* Copyright (c) 1993 Terra Nova Development
* Copyright (c) 2004 The Wyrmkeep Entertainment Co.
*
*/
#include "audio/decoders/raw.h"
#include "lab/lab.h"
#include "lab/anim.h"
#include "lab/eventman.h"
#include "lab/music.h"
#include "lab/resource.h"
namespace Lab {
#define CLOWNROOM 123
#define DIMROOM 80
Music::Music(LabEngine *vm) : _vm(vm) {
_musicFile = nullptr;
_storedPos = 0;
}
byte Music::getSoundFlags() {
byte soundFlags = Audio::FLAG_LITTLE_ENDIAN;
if (_vm->getPlatform() == Common::kPlatformWindows)
soundFlags |= Audio::FLAG_16BITS;
else if (_vm->getPlatform() == Common::kPlatformDOS)
soundFlags |= Audio::FLAG_UNSIGNED;
return soundFlags;
}
void Music::loadSoundEffect(const Common::String filename, bool loop, bool waitTillFinished) {
stopSoundEffect();
Common::File *file = _vm->_resource->openDataFile(filename, MKTAG('D', 'I', 'F', 'F'));
if (!file)
return;
_vm->_anim->_doBlack = false;
uint32 magicBytes = file->readUint32LE();
if (magicBytes != 1219009121) {
warning("readSound: Bad signature, skipping");
return;
}
uint32 soundTag = file->readUint32LE();
uint32 soundSize = file->readUint32LE();
if (soundTag != 0)
return;
file->skip(soundSize); // skip the header
while (soundTag != 65535) {
_vm->updateEvents();
soundTag = file->readUint32LE();
soundSize = file->readUint32LE() - 8;
if ((soundTag == 30) || (soundTag == 31)) {
if (waitTillFinished) {
while (isSoundEffectActive()) {
_vm->updateEvents();
_vm->waitTOF();
}
}
file->skip(4);
uint16 sampleRate = file->readUint16LE();
file->skip(2);
playSoundEffect(sampleRate, soundSize, loop, file);
} else if (soundTag == 65535) {
if (waitTillFinished) {
while (isSoundEffectActive()) {
_vm->updateEvents();
_vm->waitTOF();
}
}
} else
file->skip(soundSize);
}
}
void Music::playSoundEffect(uint16 sampleSpeed, uint32 length, bool loop, Common::File *dataFile) {
stopSoundEffect();
// NOTE: We need to use malloc(), cause this will be freed with free()
// by the music code
byte *soundData = (byte *)malloc(length);
dataFile->read(soundData, length);
Audio::SeekableAudioStream *audioStream = Audio::makeRawStream((const byte *)soundData, length, MAX<uint16>(sampleSpeed, 4000), getSoundFlags());
_vm->_mixer->playStream(Audio::Mixer::kSFXSoundType, &_sfxHandle, new Audio::LoopingAudioStream(audioStream, (loop) ? 0 : 1));
}
void Music::stopSoundEffect() {
if (isSoundEffectActive())
_vm->_mixer->stopHandle(_sfxHandle);
}
bool Music::isSoundEffectActive() const {
return _vm->_mixer->isSoundHandleActive(_sfxHandle);
}
void Music::changeMusic(const Common::String filename, bool storeCurPos, bool seektoStoredPos) {
if (storeCurPos)
_storedPos = _musicFile->pos();
stopSoundEffect();
freeMusic();
_musicFile = _vm->_resource->openDataFile(filename);
if (seektoStoredPos)
_musicFile->seek(_storedPos);
Audio::SeekableAudioStream *audioStream = Audio::makeRawStream(_musicFile, 15000, getSoundFlags());
_vm->_mixer->playStream(Audio::Mixer::kMusicSoundType, &_musicHandle, new Audio::LoopingAudioStream(audioStream, 0));
}
void Music::resetMusic(bool seektoStoredPos) {
if (_vm->getPlatform() != Common::kPlatformAmiga)
changeMusic("Music:BackGrou", false, seektoStoredPos);
else
changeMusic("Music:BackGround", false, seektoStoredPos);
}
void Music::checkRoomMusic(uint16 prevRoom, uint16 newRoom) {
if (newRoom == CLOWNROOM)
changeMusic("Music:Laugh", true, false);
else if (newRoom == DIMROOM)
changeMusic("Music:Rm81", true, false);
else if (prevRoom == CLOWNROOM || prevRoom == DIMROOM)
resetMusic(true);
}
void Music::freeMusic() {
_vm->_mixer->stopHandle(_musicHandle);
_vm->_mixer->stopHandle(_sfxHandle);
_musicFile = nullptr;
}
} // End of namespace Lab
|
