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
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
|
/* 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.
*
*/
// see if all engines using this class are DISABLED
#if !defined(ENABLE_KYRA)
// normal Header Guard
#elif !defined AUDIO_MODS_MAXTRAX_H
#define AUDIO_MODS_MAXTRAX_H
// #define MAXTRAX_HAS_MODULATION
// #define MAXTRAX_HAS_MICROTONAL
#include "audio/mods/paula.h"
namespace Audio {
class MaxTrax : public Paula {
public:
MaxTrax(int rate, bool stereo, uint16 vBlankFreq = 50, uint16 maxScores = 128);
virtual ~MaxTrax();
bool load(Common::SeekableReadStream &musicData, bool loadScores = true, bool loadSamples = true);
bool playSong(int songIndex, bool loop = false);
void advanceSong(int advance = 1);
int playNote(byte note, byte patch, uint16 duration, uint16 volume, bool rightSide);
void setVolume(const byte volume) { Common::StackLock lock(_mutex); _playerCtx.volume = volume; }
void setTempo(const uint16 tempo);
void stopMusic();
/**
* Set a callback function for sync-events.
* @param callback Callback function, will be called synchronously, so DONT modify the player
* directly in response
*/
void setSignalCallback(void (*callback) (int));
protected:
void interrupt();
private:
enum { kNumPatches = 64, kNumVoices = 4, kNumChannels = 16, kNumExtraChannels = 1 };
enum { kPriorityScore, kPriorityNote, kPrioritySound };
#ifdef MAXTRAX_HAS_MICROTONAL
int16 _microtonal[128];
#endif
struct Event {
uint16 startTime;
uint16 stopTime;
byte command;
byte parameter;
};
const struct Score {
const Event *events;
uint32 numEvents;
} *_scores;
int _numScores;
struct {
uint32 sineValue;
uint16 vBlankFreq;
int32 ticks;
int32 tickUnit;
uint16 frameUnit;
uint16 maxScoreNum;
uint16 tempo;
uint16 tempoInitial;
uint16 tempoStart;
int16 tempoDelta;
int32 tempoTime;
int32 tempoTicks;
byte volume;
bool filterOn;
bool handleVolume;
bool musicLoop;
int scoreIndex;
const Event *nextEvent;
int32 nextEventTime;
void (*syncCallBack) (int);
const Event *repeatPoint[4];
byte repeatCount[4];
} _playerCtx;
struct Envelope {
uint16 duration;
uint16 volume;
};
struct Patch {
const Envelope *attackPtr;
//Envelope *releasePtr;
uint16 attackLen;
uint16 releaseLen;
int16 tune;
uint16 volume;
// this was the SampleData struct in the assembler source
const int8 *samplePtr;
uint32 sampleTotalLen;
uint32 sampleAttackLen;
uint16 sampleOctaves;
} _patch[kNumPatches];
struct ChannelContext {
const Patch *patch;
uint16 regParamNumber;
uint16 modulation;
uint16 modulationTime;
int16 microtonal;
uint16 portamentoTime;
int16 pitchBend;
int16 pitchReal;
int8 pitchBendRange;
uint8 volume;
// uint8 voicesActive;
enum {
kFlagRightChannel = 1 << 0,
kFlagPortamento = 1 << 1,
kFlagDamper = 1 << 2,
kFlagMono = 1 << 3,
kFlagMicrotonal = 1 << 4,
kFlagModVolume = 1 << 5
};
byte flags;
bool isAltered;
uint8 lastNote;
// uint8 program;
} _channelCtx[kNumChannels + kNumExtraChannels];
struct VoiceContext {
ChannelContext *channel;
const Patch *patch;
const Envelope *envelope;
// uint32 uinqueId;
int32 preCalcNote;
uint32 ticksLeft;
int32 portaTicks;
int32 incrVolume;
// int32 periodOffset;
uint16 envelopeLeft;
uint16 noteVolume;
uint16 baseVolume;
uint16 lastPeriod;
byte baseNote;
byte endNote;
byte octave;
// byte number;
// byte link;
enum {
kStatusFree,
kStatusHalt,
kStatusDecay,
kStatusRelease,
kStatusSustain,
kStatusAttack,
kStatusStart
};
uint8 isBlocked;
uint8 priority;
byte status;
byte lastVolume;
byte tieBreak;
bool hasDamper;
bool hasPortamento;
byte dmaOff;
int32 stopEventTime;
} _voiceCtx[kNumVoices];
void controlCh(ChannelContext &channel, byte command, byte data);
void freePatches();
void freeScores();
void resetChannel(ChannelContext &chan, bool rightChannel);
void resetPlayer();
int8 pickvoice(uint pick, int16 pri);
uint16 calcNote(const VoiceContext &voice);
int8 noteOn(ChannelContext &channel, byte note, uint16 volume, uint16 pri);
void killVoice(byte num);
static void outPutEvent(const Event &ev, int num = -1);
static void outPutScore(const Score &sc, int num = -1);
};
} // End of namespace Audio
#endif // !defined AUDIO_MODS_MAXTRAX_H
|
