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
|
/* Copyright (C) 2003, 2004, 2005, 2006, 2008, 2009 Dean Beeler, Jerome Fisher
* Copyright (C) 2011, 2012, 2013 Dean Beeler, Jerome Fisher, Sergey V. Mikayev
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 2.1 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "mt32emu.h"
namespace MT32Emu {
Poly::Poly(Part *usePart) {
part = usePart;
key = 255;
velocity = 255;
sustain = false;
activePartialCount = 0;
for (int i = 0; i < 4; i++) {
partials[i] = NULL;
}
state = POLY_Inactive;
next = NULL;
}
void Poly::reset(unsigned int newKey, unsigned int newVelocity, bool newSustain, Partial **newPartials) {
if (isActive()) {
// FIXME: Throw out some big ugly debug output with a lot of exclamation marks - we should never get here
terminate();
}
key = newKey;
velocity = newVelocity;
sustain = newSustain;
activePartialCount = 0;
for (int i = 0; i < 4; i++) {
partials[i] = newPartials[i];
if (newPartials[i] != NULL) {
activePartialCount++;
state = POLY_Playing;
}
}
}
bool Poly::noteOff(bool pedalHeld) {
// Generally, non-sustaining instruments ignore note off. They die away eventually anyway.
// Key 0 (only used by special cases on rhythm part) reacts to note off even if non-sustaining or pedal held.
if (state == POLY_Inactive || state == POLY_Releasing) {
return false;
}
if (pedalHeld) {
if (state == POLY_Held) {
return false;
}
state = POLY_Held;
} else {
startDecay();
}
return true;
}
bool Poly::stopPedalHold() {
if (state != POLY_Held) {
return false;
}
return startDecay();
}
bool Poly::startDecay() {
if (state == POLY_Inactive || state == POLY_Releasing) {
return false;
}
state = POLY_Releasing;
for (int t = 0; t < 4; t++) {
Partial *partial = partials[t];
if (partial != NULL) {
partial->startDecayAll();
}
}
return true;
}
bool Poly::startAbort() {
if (state == POLY_Inactive) {
return false;
}
for (int t = 0; t < 4; t++) {
Partial *partial = partials[t];
if (partial != NULL) {
partial->startAbort();
}
}
return true;
}
void Poly::terminate() {
if (state == POLY_Inactive) {
return;
}
for (int t = 0; t < 4; t++) {
Partial *partial = partials[t];
if (partial != NULL) {
partial->deactivate();
}
}
if (state != POLY_Inactive) {
// FIXME: Throw out lots of debug output - this should never happen
// (Deactivating the partials above should've made them each call partialDeactivated(), ultimately changing the state to POLY_Inactive)
state = POLY_Inactive;
}
}
void Poly::backupCacheToPartials(PatchCache cache[4]) {
for (int partialNum = 0; partialNum < 4; partialNum++) {
Partial *partial = partials[partialNum];
if (partial != NULL && partial->patchCache == &cache[partialNum]) {
partial->cachebackup = cache[partialNum];
partial->patchCache = &partial->cachebackup;
}
}
}
/**
* Returns the internal key identifier.
* For non-rhythm, this is within the range 12 to 108.
* For rhythm on MT-32, this is 0 or 1 (special cases) or within the range 24 to 87.
* For rhythm on devices with extended PCM sounds (e.g. CM-32L), this is 0, 1 or 24 to 108
*/
unsigned int Poly::getKey() const {
return key;
}
unsigned int Poly::getVelocity() const {
return velocity;
}
bool Poly::canSustain() const {
return sustain;
}
PolyState Poly::getState() const {
return state;
}
unsigned int Poly::getActivePartialCount() const {
return activePartialCount;
}
bool Poly::isActive() const {
return state != POLY_Inactive;
}
// This is called by Partial to inform the poly that the Partial has deactivated
void Poly::partialDeactivated(Partial *partial) {
for (int i = 0; i < 4; i++) {
if (partials[i] == partial) {
partials[i] = NULL;
activePartialCount--;
}
}
if (activePartialCount == 0) {
state = POLY_Inactive;
}
part->partialDeactivated(this);
}
Poly *Poly::getNext() {
return next;
}
void Poly::setNext(Poly *poly) {
next = poly;
}
}
|
