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
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
|
/* 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.
*
*/
#ifndef XEEN_MUSIC_H
#define XEEN_MUSIC_H
#include "audio/fmopl.h"
#include "audio/mixer.h"
#include "common/array.h"
#include "common/mutex.h"
#include "common/queue.h"
#define ADLIB_CHANNEL_COUNT 9
namespace OPL {
class OPL;
}
namespace Xeen {
class Music;
typedef bool (Music::*CommandFn)(const byte *&srcP, byte nextByte);
struct RegisterValue {
uint8 _regNum;
uint8 _value;
RegisterValue(int regNum, int value) {
_regNum = regNum; _value = value;
}
};
class Music {
struct Channel {
byte _outputLevel;
byte _scalingValue;
Channel() : _outputLevel(0), _scalingValue(0) {}
};
private:
static const byte OPERATOR1_INDEXES[ADLIB_CHANNEL_COUNT];
static const byte OPERATOR2_INDEXES[ADLIB_CHANNEL_COUNT];
static const CommandFn COMMAND_TABLE1[16];
static const CommandFn COMMAND_TABLE2[16];
private:
OPL::OPL *_opl;
Common::Mutex _driverMutex;
Common::Array<Channel> _channels;
Common::Queue<RegisterValue> _queue;
const byte *_effectsData;
Common::Array<uint16> _effectsOffsets;
const byte *_musicPtr1, *_musicPtr2;
const byte *_dataPtr;
bool _fieldF;
bool _field1C;
bool _field1E;
uint _fieldFB[7];
int _field109;
int _field10B;
byte _field10D[7];
int _field114;
int _field115;
int _field116;
int _field117;
bool _lowMusicIgnored;
private:
/**
* Initializes the state of the Adlib OPL driver
*/
void initialize();
/**
* Loads effects data that was embedded in the music driver
*/
void loadEffectsData();
/**
* Adds a register write to the pending queue that will be flushed
* out to the OPL on the next timer call
*/
void write(int reg, int val);
/**
* Timer function for OPL
*/
void onTimer();
/**
* Flushes any pending writes to the OPL
*/
void flush();
/**
* Updates any playing music
*/
void update();
/**
* Does a reset
*/
void reset();
/**
* Resets all the output frequencies
*/
void resetFrequencies();
/**
* Sets the frequency for an operator
*/
void setFrequency(byte operatorNum, uint frequency);
/**
* Sets the output level for a channel
*/
void setOutputLevel(byte channelNum, uint level);
/**
* Post-process
*/
void postProcess();
/**
* Update command methods
*/
bool cmd1(const byte *&srcP, byte nextByte);
bool cmd2(const byte *&srcP, byte nextByte);
bool cmd3(const byte *&srcP, byte nextByte);
bool cmd4(const byte *&srcP, byte nextByte);
bool cmd5(const byte *&srcP, byte nextByte);
bool cmd6(const byte *&srcP, byte nextByte);
bool cmd7(const byte *&srcP, byte nextByte);
bool cmd8(const byte *&srcP, byte nextByte);
bool cmd9(const byte *&srcP, byte nextByte);
bool cmd10(const byte *&srcP, byte nextByte);
bool cmd11(const byte *&srcP, byte nextByte);
bool cmd12(const byte *&srcP, byte nextByte);
bool cmd13(const byte *&srcP, byte nextByte);
bool cmd14(const byte *&srcP, byte nextByte);
bool cmd15(const byte *&srcP, byte nextByte);
bool cmd16(const byte *&srcP, byte nextByte);
bool cmd17(const byte *&srcP, byte nextByte);
bool cmd18(const byte *&srcP, byte nextByte);
bool cmd19(const byte *&srcP, byte nextByte);
bool cmd20(const byte *&srcP, byte nextByte);
bool cmd21(const byte *&srcP, byte nextByte);
bool cmd22(const byte *&srcP, byte nextByte);
bool cmd23(const byte *&srcP, byte nextByte);
bool cmd24(const byte *&srcP, byte nextByte);
protected:
Audio::Mixer *_mixer;
public:
Music(Audio::Mixer *mixer);
~Music();
/**
* Starts an effect playing
*/
void playEffect(uint effectId);
};
} // End of namespace Xeen
#endif /* XEEN_MUSIC_H */
|