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
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
|
/* 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.
*
* $URL$
* $Id$
*
*/
#ifndef SOUND_MODS_MAXTRAX_H
#define SOUND_MODS_MAXTRAX_H
#include "sound/mods/paula.h"
namespace Audio {
class MaxTrax : public Paula {
public:
MaxTrax(int rate, bool stereo);
virtual ~MaxTrax();
protected:
void interrupt();
private:
public:
enum { kNumPatches = 64, kNumVoices = 4, kNumChannels = 16, kNumExtraChannels = 1 };
enum { kPriorityScore, kPriorityNote, kPrioritySound };
int16 _microtonal[128];
struct Event;
struct PlayerContext {
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 musicPlaying;
bool musicLoop;
int scoreIndex;
const Event *nextEvent;
int32 nextEventTime;
bool addedNote;
byte lastVoice;
byte voicesActive;
} _playerCtx;
struct Envelope {
uint16 duration;
uint16 volume;
};
const struct Patch {
const Envelope *attackPtr;
//Envelope *releasePtr;
uint16 attackLen;
uint16 releaseLen;
uint16 tune;
uint16 volume;
// this was the SampleData struct in the assembler source
const int8 *samplePtr;
uint32 sampleTotalLen;
uint32 sampleAttackLen;
uint16 sampleOctaves;
} _patch[kNumPatches];
struct Event {
uint16 startTime;
uint16 stopTime;
byte command;
byte parameter;
};
struct Score {
const Event *events;
uint32 numEvents;
} *_scores;
int _numScores;
struct ChannelContext {
const Patch *patch;
uint16 regParamNumber;
uint16 modulation;
uint16 modulationTime;
int16 microtonal;
uint16 portamento;
int16 pitchBend;
int16 pitchReal;
int8 pitchBendRange;
uint8 volume;
uint8 voicesActive;
// uint8 number;
enum {
kFlagRightChannel = 1 << 0,
kFlagPortamento = 1 << 1,
kFlagDamper = 1 << 2,
kFlagMono = 1 << 3,
kFlagMicrotonal = 1 << 4,
kFlagModVolume = 1 << 5,
kFlagAltered = 1 << 6
};
byte flags;
uint8 lastNote;
uint8 program;
} _channelCtx[kNumChannels + kNumExtraChannels];
struct VoiceContext {
ChannelContext *channel;
const Patch *patch;
const Envelope *envelope;
uint32 uinqueId;
uint32 lastTicks;
uint32 ticksLeft;
int32 portaTicks;
int32 incrVolume;
uint32 periodOffset;
/*ifne FASTSOUND
APTR voice_CurFastIOB ; current fast iob playing
APTR voice_NextFastIOB ; next fast iob to play
APTR voice_FastBuffer ; pointer to buffer area
endc*/
uint16 envelopeLeft;
uint16 noteVolume;
uint16 baseVolume;
uint16 lastPeriod;
byte baseNote;
byte endNote;
byte number;
byte link;
byte priority;
enum {
kStatusFree,
kStatusHalt,
kStatusDecay,
kStatusRelease,
kStatusSustain,
kStatusAttack,
kStatusStart
};
byte status;
enum {
kFlagStolen = 1 << 0,
kFlagPortamento = 1 << 1,
kFlagDamper = 1 << 2,
kFlagBlocked = 1 << 3,
kFlagRecalc = 1 << 4
};
byte flags;
byte lastVolume;
int32 stopEventTime;
byte stopEventCommand;
byte stopEventParameter;
} _voiceCtx[kNumVoices];
bool load(Common::SeekableReadStream &musicData, bool loadScores = true, bool loadSamples = true);
bool doSong(int songIndex, int advance = 0);
void stopMusic();
void freePatches();
void freeScores();
void resetChannel(ChannelContext &chan, bool rightChannel);
int calcNote(VoiceContext &voice);
int8 noteOn(ChannelContext &channel, byte note, uint16 volume, uint16 pri);
void noteOff(ChannelContext &channel, byte note);
void killVoice(byte num);
void setTempo(const uint16 tempo) {
_playerCtx.tickUnit = (int32)(((uint32)(tempo & 0xFFF0) << 8) / (uint16)(5 * _playerCtx.vBlankFreq));
}
static void outPutEvent(const Event &ev, int num = -1) {
struct {
byte cmd;
const char *name;
const char *param;
} COMMANDS[] = {
{0x80, "TEMPO ", "TEMPO, N/A "},
{0xa0, "SPECIAL ", "CHAN, SPEC # | VAL"},
{0xb0, "CONTROL ", "CHAN, CTRL # | VAL"},
{0xc0, "PROGRAM ", "CHANNEL, PROG # "},
{0xe0, "BEND ", "CHANNEL, BEND VALUE"},
{0xf0, "SYSEX ", "TYPE, SIZE "},
{0xf8, "REALTIME", "REALTIME, N/A "},
{0xff, "END ", "N/A, N/A "},
{0xff, "NOTE ", "VOL | CHAN, STOP"},
};
int i = 0;
for (; i < ARRAYSIZE(COMMANDS) - 1 && ev.command != COMMANDS[i].cmd; ++i)
;
if (num == -1)
debug("Event : %02X %s %s %02X %04X %04X", ev.command, COMMANDS[i].name, COMMANDS[i].param, ev.parameter, ev.startTime, ev.stopTime);
else
debug("Event %3d: %02X %s %s %02X %04X %04X", num, ev.command, COMMANDS[i].name, COMMANDS[i].param, ev.parameter, ev.startTime, ev.stopTime);
}
static void outPutScore(const Score &sc, int num = -1) {
if (num == -1)
debug("score : %i Events", sc.numEvents);
else
debug("score %2d: %i Events", num, sc.numEvents);
for (uint i = 0; i < sc.numEvents; ++i)
outPutEvent(sc.events[i], i);
debug("");
}
};
} // End of namespace Audio
#endif
|
