public override void Stop() {
this.status = AdsrStatus.Release;
}
public override void Render(float[] leftChannel,float[] rightChannel)
{
ISoundRender soundRender = this.SoundInputs[0];
int channelSize = leftChannel.Length;
float leftVolume = volume * (1.0f-pan) * velocity;
float rightVolume = volume * pan * velocity;
if (soundRender.Playing) soundRender.Render(leftChannel,rightChannel);
else {
int i;
this.playing = false;
for (i=0; i<channelSize; i++) leftChannel[i] = 0.0f;
for (i=0; i<channelSize; i++) rightChannel[i] = 0.0f;
return;
}
for (int i=0; i<channelSize; i++) {
switch(status) {
case AdsrStatus.PreDelay:
preDelaySamplesElapsed++;
if (preDelaySamplesElapsed >= preDelaySamples) {
status = AdsrStatus.Attack;
}
break;
case AdsrStatus.Attack:
ADSRenvelope += attackLevel;
if (ADSRenvelope >= 1.0f) {
ADSRenvelope = 1.0f;
status = AdsrStatus.Decay;
}
break;
case AdsrStatus.Decay:
ADSRenvelope -= decayLevel;
if (ADSRenvelope <= sustainLevel) {
ADSRenvelope = sustainLevel;
status = AdsrStatus.Sustain;
}
break;
case AdsrStatus.Sustain:
ADSRenvelope = sustainLevel;
break;
case AdsrStatus.Release:
ADSRenvelope -= releaseLevel;
if (ADSRenvelope <= 0.0f) {
ADSRenvelope = 0.0f;
playing = false;
}
break;
}
leftChannel[i] = leftChannel[i] * leftVolume * ADSRenvelope;
rightChannel[i] = rightChannel[i] * rightVolume * ADSRenvelope;
}
}
