36 |
FadeOutCoeff = -1.0f / killSteps; |
FadeOutCoeff = -1.0f / killSteps; |
37 |
} |
} |
38 |
|
|
39 |
void EGADSR::update(event_t Event, double SamplePos, float CurrentPitch, uint SampleRate) { |
void EGADSR::update(event_t Event, uint SampleRate) { |
40 |
|
if (Event == event_hold_end) HoldAttack = false; |
41 |
|
|
42 |
switch (Stage) { |
switch (Stage) { |
43 |
case stage_attack: |
case stage_attack: |
44 |
if (StepsLeft) { |
switch (Event) { |
45 |
PostponedEvent = Event; |
case event_release: |
|
} else { |
|
|
if (Event == event_release) |
|
|
enterReleasePart1Stage(); |
|
|
else if (Event == event_cancel_release) |
|
|
enterSustainStage(); |
|
|
else if (PostponedEvent == event_release) |
|
46 |
enterReleasePart1Stage(); |
enterReleasePart1Stage(); |
47 |
else if (PostponedEvent == event_cancel_release) |
break; |
48 |
|
case event_cancel_release: |
49 |
enterSustainStage(); |
enterSustainStage(); |
50 |
else if (HoldAttack) |
break; |
51 |
enterAttackHoldStage(SamplePos, CurrentPitch); |
case event_stage_end: |
52 |
else |
if (HoldAttack) |
53 |
enterDecay1Part1Stage(SampleRate); |
enterAttackHoldStage(); |
54 |
|
else |
55 |
|
enterDecay1Part1Stage(SampleRate); |
56 |
|
break; |
57 |
} |
} |
58 |
break; |
break; |
59 |
case stage_attack_hold: |
case stage_attack_hold: |
60 |
switch (Event) { |
switch (Event) { |
61 |
case event_stage_end: |
case event_stage_end: {// just refresh time |
62 |
|
const int intMax = (unsigned int) -1 >> 1; |
63 |
|
StepsLeft = intMax; // we use the highest possible value |
64 |
|
break; |
65 |
|
} |
66 |
|
case event_hold_end: |
67 |
enterDecay1Part1Stage(SampleRate); |
enterDecay1Part1Stage(SampleRate); |
68 |
break; |
break; |
69 |
case event_release: |
case event_release: |
100 |
break; |
break; |
101 |
case event_stage_end: // fall through |
case event_stage_end: // fall through |
102 |
case event_cancel_release: |
case event_cancel_release: |
103 |
if (InfiniteSustain) |
if (Level < CONFIG_EG_BOTTOM) |
104 |
|
enterEndStage(); |
105 |
|
else if (InfiniteSustain) |
106 |
enterSustainStage(); |
enterSustainStage(); |
107 |
else |
else |
108 |
enterDecay2Stage(SampleRate); |
enterDecay2Stage(SampleRate); |
117 |
case event_release: |
case event_release: |
118 |
enterReleasePart1Stage(); |
enterReleasePart1Stage(); |
119 |
break; |
break; |
120 |
|
case event_hold_end: |
121 |
|
enterDecay1Part1Stage(SampleRate); |
122 |
|
break; |
123 |
} |
} |
124 |
break; |
break; |
125 |
case stage_sustain: |
case stage_sustain: |
132 |
case event_release: |
case event_release: |
133 |
enterReleasePart1Stage(); |
enterReleasePart1Stage(); |
134 |
break; |
break; |
135 |
|
case event_hold_end: |
136 |
|
enterDecay1Part1Stage(SampleRate); |
137 |
|
break; |
138 |
} |
} |
139 |
break; |
break; |
140 |
case stage_release_part1: |
case stage_release_part1: |
173 |
} |
} |
174 |
} |
} |
175 |
|
|
176 |
void EGADSR::trigger(uint PreAttack, float AttackTime, bool HoldAttack, long LoopStart, float Decay1Time, double Decay2Time, bool InfiniteSustain, uint SustainLevel, float ReleaseTime, float Volume, uint SampleRate) { |
void EGADSR::trigger(uint PreAttack, float AttackTime, bool HoldAttack, float Decay1Time, double Decay2Time, bool InfiniteSustain, uint SustainLevel, float ReleaseTime, float Volume, uint SampleRate) { |
177 |
|
this->SustainLevel = SustainLevel / 1000.0; |
|
if (SustainLevel) { |
|
|
this->SustainLevel = SustainLevel / 1000.0; |
|
|
} else { |
|
|
// sustain level 0 means that voice dies after decay 1 |
|
|
this->SustainLevel = CONFIG_EG_BOTTOM; |
|
|
InfiniteSustain = false; |
|
|
Decay2Time = CONFIG_EG_MIN_RELEASE_TIME; |
|
|
} |
|
178 |
this->InfiniteSustain = InfiniteSustain; |
this->InfiniteSustain = InfiniteSustain; |
179 |
this->HoldAttack = HoldAttack; |
this->HoldAttack = HoldAttack; |
|
this->LoopStart = LoopStart; |
|
180 |
|
|
181 |
this->Decay1Time = Decay1Time; |
this->Decay1Time = Decay1Time; |
182 |
this->Decay2Time = Decay2Time; |
this->Decay2Time = Decay2Time; |
194 |
ReleaseCoeff3 = ExpOffset * (1 - ReleaseCoeff2); |
ReleaseCoeff3 = ExpOffset * (1 - ReleaseCoeff2); |
195 |
ReleaseLevel2 = 0.25 * invVolume; |
ReleaseLevel2 = 0.25 * invVolume; |
196 |
|
|
197 |
enterAttackStage(PreAttack, AttackTime, SampleRate, 0.0, 1.0f); |
enterAttackStage(PreAttack, AttackTime, SampleRate); |
198 |
} |
} |
199 |
|
|
200 |
void EGADSR::enterAttackStage(const uint PreAttack, const float AttackTime, const uint SampleRate, const double SamplePos, const float CurrentPitch) { |
void EGADSR::enterAttackStage(const uint PreAttack, const float AttackTime, const uint SampleRate) { |
201 |
Stage = stage_attack; |
Stage = stage_attack; |
202 |
Segment = segment_lin; |
Segment = segment_lin; |
203 |
// Measurements of GSt output shows that the real attack time |
// Measurements of GSt output shows that the real attack time |
208 |
Coeff = 0.896f * (1.0f - Level) / StepsLeft; // max level is a bit lower if attack != 0 |
Coeff = 0.896f * (1.0f - Level) / StepsLeft; // max level is a bit lower if attack != 0 |
209 |
} else { // immediately jump to the next stage |
} else { // immediately jump to the next stage |
210 |
Level = 1.0; |
Level = 1.0; |
211 |
if (HoldAttack) enterAttackHoldStage(SamplePos, CurrentPitch); |
if (HoldAttack) enterAttackHoldStage(); |
212 |
else enterDecay1Part1Stage(SampleRate); |
else enterDecay1Part1Stage(SampleRate); |
213 |
} |
} |
|
PostponedEvent = (event_t) -1; // init with anything except release or cancel_release |
|
214 |
} |
} |
215 |
|
|
216 |
void EGADSR::enterAttackHoldStage(const double SamplePos, const float CurrentPitch) { |
void EGADSR::enterAttackHoldStage() { |
217 |
Stage = stage_attack_hold; |
Stage = stage_attack_hold; |
218 |
Segment = segment_lin; |
Segment = segment_lin; |
219 |
Coeff = 0.0f; // don't rise anymore |
Coeff = 0.0f; // don't rise anymore |
220 |
StepsLeft = (int) (LoopStart - SamplePos / CurrentPitch); // FIXME: just an approximation, inaccuracy grows with higher audio fragment size, sufficient for usual fragment sizes though |
const int intMax = (unsigned int) -1 >> 1; |
221 |
|
StepsLeft = intMax; // we use the highest value possible (we refresh StepsLeft in update() in case) |
222 |
} |
} |
223 |
|
|
224 |
void EGADSR::enterDecay1Part1Stage(const uint SampleRate) { |
void EGADSR::enterDecay1Part1Stage(const uint SampleRate) { |
232 |
// (where d is 1/SampleRate). The transition from f to g is |
// (where d is 1/SampleRate). The transition from f to g is |
233 |
// done when f(x) has reached Level2 = 25% of full volume. |
// done when f(x) has reached Level2 = 25% of full volume. |
234 |
StepsLeft = (int) (Decay1Time * SampleRate); |
StepsLeft = (int) (Decay1Time * SampleRate); |
235 |
if (StepsLeft && SustainLevel < 1.0) { |
if (StepsLeft && SustainLevel < 1.0 && Level > SustainLevel) { |
236 |
Stage = stage_decay1_part1; |
Stage = stage_decay1_part1; |
237 |
Segment = segment_lin; |
Segment = segment_lin; |
238 |
Decay1Slope = 1.365 * (SustainLevel - 1.0) / StepsLeft; |
Decay1Slope = 1.365 * (SustainLevel - 1.0) / StepsLeft; |