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
|
/* 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_TFMX_H
#define SOUND_MODS_TFMX_H
#include "sound/mods/paula.h"
namespace {
#ifndef NDEBUG
inline void boundaryCheck(const void *bufStart, size_t bufLen, const void *address, size_t accessLen = 1) {
assert(bufStart <= address && (const byte *)address + accessLen <= (const byte *)bufStart + bufLen);
}
#else
inline void boundaryCheck(const void *, size_t, void *, size_t = 1) {}
#endif
}
namespace Audio {
class Tfmx : public Paula {
public:
Tfmx(int rate, bool stereo);
virtual ~Tfmx();
void interrupt();
void doSong(int songPos);
void doMacro(int macro, int note);
bool load(Common::SeekableReadStream &musicData, Common::SeekableReadStream &sampleData);
// Note: everythings public so the debug-Routines work.
// private:
enum {kPalDefaultCiaVal = 11822, kNtscDefaultCiaVal = 14320, kCiaBaseInterval = 0x1B51F8};
enum {kNumVoices = 4, kNumChannels = 8, kNumSubsongs = 32, kMaxPatternOffsets = 128, kMaxMacroOffsets = 128};
static const uint16 noteIntervalls[64];
struct Resource {
uint32 _trackstepOffset; //!< Offset in mdat
byte *_mdatData; //!< Currently the whole mdat-File
byte *_sampleData; //!< Currently the whole sample-File
uint32 _mdatLen;
uint32 _sampleLen;
byte header[10];
uint16 headerFlags;
uint32 headerUnknown;
char textField[6 * 40];
const uint16 *getTrackPtr(uint16 trackstep = 0) {
uint16 *trackData = (uint16 *)(_mdatData + _trackstepOffset + 16 * trackstep);
boundaryCheck(_mdatData, _mdatLen, trackData, 16);
return trackData;
}
const uint32 *getPatternPtr(uint32 offset) {
uint32 *pattData = (uint32 *)(_mdatData + offset);
boundaryCheck(_mdatData, _mdatLen, pattData, 4);
return pattData;
}
const uint32 *getMacroPtr(uint32 offset) {
uint32 *macroData = (uint32 *)(_mdatData + offset);
boundaryCheck(_mdatData, _mdatLen, macroData, 4);
return macroData;
}
const int8 *getSamplePtr(const uint32 offset) {
int8 *sampleData = (int8 *)(_sampleData + offset);
boundaryCheck(_sampleData, _sampleLen, sampleData, 2);
return sampleData;
}
Resource() : _mdatData(), _mdatLen(), _sampleData(), _sampleLen() {}
~Resource() {
delete[] _mdatData;
delete[] _sampleData;
}
} _resource;
uint32 _patternOffset[kMaxPatternOffsets]; //!< Offset in mdat
uint32 _macroOffset[kMaxMacroOffsets]; //!< Offset in mdat
struct Subsong {
uint16 songstart; //!< Index in Trackstep-Table
uint16 songend; //!< Last index in Trackstep-Table
uint16 tempo;
} _subsong[kNumSubsongs];
struct ChannelContext {
byte paulaChannel;
uint16 macroWait;
uint32 macroOffset;
uint32 macroReturnOffset;
uint16 macroStep;
uint32 macroReturnStep;
uint8 macroLoopCount;
bool macroRun;
bool sfxLocked;
int16 sfxLockTime;
bool keyUp;
bool deferWait;
bool countDmaInterrupts;
uint16 dmaCount;
uint32 sampleStart;
uint16 sampleLen;
uint16 period;
int8 volume;
uint8 relVol;
uint8 note;
uint8 prevNote;
uint16 fineTune;
uint16 portaDestPeriod;
uint16 portaPeriod;
uint8 portaReset;
uint8 portaTime;
int16 portaRate;
uint8 envReset;
uint8 envTime;
uint8 envRate;
uint8 envEndVolume;
int16 vibOffset;
int8 vibWidth;
uint8 vibFlag;
uint8 vibReset;
uint8 vibTime;
uint8 addBeginTime;
uint8 addBeginReset;
int32 addBegin;
} _channelCtx[kNumVoices];
struct PatternContext {
uint32 offset; // patternStart, Offset from mdat
uint32 savedOffset; // for subroutine calls
uint16 step; // distance from patternStart
uint16 savedStep;
uint8 command;
int8 expose;
uint8 loopCount;
uint8 wait; //!< how many ticks to wait before next Command
} _patternCtx[kNumChannels];
struct TrackStepContext {
uint16 startInd;
uint16 stopInd;
uint16 posInd;
int16 loopCount;
} _trackCtx;
struct PlayerContext {
bool enabled;
// bool end;
int8 song; //!< >= 0 if Song is running (means process Patterns)
bool pendingTrackstep;
uint16 patternCount;
uint16 patternSkip; //!< skip that amount of CIA-Interrupts
int8 volume; //!< Master Volume
/* int8 fadeDest;
int8 fadeTime;
int8 fadeReset;
int8 fadeSlope; */
} _playerCtx;
void initMacroProgramm(ChannelContext &channel) {
channel.macroStep = 0;
channel.macroWait = 0;
channel.macroRun = true;
channel.macroLoopCount = 0xFF;
channel.countDmaInterrupts = false;
}
void stopChannel(ChannelContext &channel) {
if (!channel.sfxLocked) {
channel.macroRun = false;
channel.countDmaInterrupts = false;
Paula::disableChannel(channel.paulaChannel);
}
}
void effects(ChannelContext &channel);
FORCEINLINE bool macroStep(ChannelContext &channel);
void advancePatterns();
FORCEINLINE bool patternStep(PatternContext &pattern);
bool trackStep();
void noteCommand(uint8 note, uint8 param1, uint8 param2, uint8 param3);
};
}
#endif
|
