public void Increment(int samples)
{
do
{
int neededSamples = stage.time - index;
if (neededSamples > samples)
{
index += samples;
samples = 0;
}
else
{
index = 0;
if (envState != EnvelopeStateEnum.None)
{
do
{
stage = stages[(int)++envState];
}while (stage.time == 0);
}
samples -= neededSamples;
}
}while (samples > 0);
int i = (int)(stage.graph.Length * (index / (double)stage.time));
if (stage.reverse)
{
value = (1f - stage.graph[i]) * stage.scale + stage.offset;
}
else
{
value = stage.graph[i] * stage.scale + stage.offset;
}
}
public void QuickSetupSf2(int sampleRate, int note, short keyNumToHold, short keyNumToDecay, bool isVolumeEnvelope, EnvelopeDescriptor envelopeInfo)
{
depth = envelopeInfo.Depth;
//Delay
stages[0].offset = 0;
stages[0].scale = 0;
stages[0].time = Math.Max(0, (int)(sampleRate * (envelopeInfo.DelayTime)));
//Attack
stages[1].offset = envelopeInfo.StartLevel;
stages[1].scale = envelopeInfo.PeakLevel - envelopeInfo.StartLevel;
stages[1].time = Math.Max(0, (int)(sampleRate * (envelopeInfo.AttackTime)));
stages[1].graph = Tables.EnvelopeTables[envelopeInfo.AttackGraph];
//Hold
stages[2].offset = 0;
stages[2].scale = envelopeInfo.PeakLevel;
stages[2].time = Math.Max(0, (int)(sampleRate * (envelopeInfo.HoldTime) * Math.Pow(2, ((60 - note) * keyNumToHold) / 1200.0)));
//Decay
stages[3].offset = envelopeInfo.SustainLevel;
stages[3].scale = envelopeInfo.PeakLevel - envelopeInfo.SustainLevel;
if (envelopeInfo.SustainLevel == envelopeInfo.PeakLevel)
{
stages[3].time = 0;
}
else
{
stages[3].time = Math.Max(0, (int)(sampleRate * (envelopeInfo.DecayTime) * Math.Pow(2, ((60 - note) * keyNumToDecay) / 1200.0)));
}
stages[3].graph = Tables.EnvelopeTables[envelopeInfo.DecayGraph];
//Sustain
stages[4].offset = 0;
stages[4].scale = envelopeInfo.SustainLevel;
stages[4].time = (int)(sampleRate * envelopeInfo.SustainTime);
//Release
stages[5].scale = stages[3].time == 0 && stages[4].time == 0 ? envelopeInfo.PeakLevel : stages[4].scale;
if (isVolumeEnvelope)
{
stages[5].offset = -100;
stages[5].scale += 100;
stages[6].scale = -100;
}
else
{
stages[5].offset = 0;
stages[6].scale = 0;
}
stages[5].time = Math.Max(0, (int)(sampleRate * (envelopeInfo.ReleaseTime)));
stages[5].graph = Tables.EnvelopeTables[envelopeInfo.ReleaseGraph];
//Reset value, index, and starting state
index = 0; value = 0;
envState = EnvelopeStateEnum.Delay;
while (stages[(int)envState].time == 0)
{
envState++;
}
stage = stages[(int)envState];
}
//--Methods
public Envelope()
{
stages = new EnvelopeStage[7];
for (int x = 0; x < stages.Length; x++)
{
stages[x] = new EnvelopeStage();
stages[x].graph = Tables.EnvelopeTables[0];
}
stages[3].reverse = true;
stages[5].reverse = true;
stages[6].time = 100000000;
envState = EnvelopeStateEnum.None;
stage = stages[(int)envState];
}
//--Methods
public Envelope()
{
stages = new EnvelopeStage[7];
for (int x = 0; x < stages.Length; x++)
{
stages[x] = new EnvelopeStage();
stages[x].graph = Tables.EnvelopeTables[0];
}
stages[3].reverse = true;
stages[5].reverse = true;
stages[6].time = 100000000;
envState = EnvelopeStateEnum.None;
stage = stages[(int)envState];
}
//--Methods
public Envelope()
{
stages = new EnvelopeStage[7];
for (int x = 0; x < stages.Length; x++)
{
stages[x] = new EnvelopeStage();
}
stages[0].graph = Tables.EnvelopeTables[0];
stages[2].graph = Tables.EnvelopeTables[0];
stages[3].reverse = true;
stages[4].graph = Tables.EnvelopeTables[0];
stages[5].reverse = true;
stages[6].graph = Tables.EnvelopeTables[0];
stages[6].time = 100000000;
}
public void Release(float lowerLimit)
{
if (value <= lowerLimit)
{
index = 0;
envState = EnvelopeStateEnum.None;
stage = stages[(int)envState];
}
else if (envState < EnvelopeStateEnum.Release)
{
index = 0;
envState = EnvelopeStateEnum.Release;
stage = stages[(int)envState];
stage.scale = value;
}
}
public void Release()
{
if (value <= Synthesizer.NonAudible)
{
index = 0;
envState = EnvelopeStateEnum.None;
stage = stages[(int)envState];
}
else if (envState < EnvelopeStateEnum.Release)
{
index = 0;
envState = EnvelopeStateEnum.Release;
stage = stages[(int)envState];
stage.scale = value;
}
}
public void ReleaseSf2VolumeEnvelope()
{
if (value <= -100)
{
index = 0;
envState = EnvelopeStateEnum.None;
stage = stages[(int)envState];
}
else if (envState < EnvelopeStateEnum.Release)
{
index = 0;
envState = EnvelopeStateEnum.Release;
stage = stages[(int)envState];
stage.offset = -100;
stage.scale = 100 + value;
}
}
public void QuickSetup(int sampleRate, float velocity, EnvelopeDescriptor envelopeInfo)
{
depth = envelopeInfo.Depth + velocity * envelopeInfo.Vel2Depth;
//Delay
stages[0].offset = 0;
stages[0].scale = 0;
stages[0].time = Math.Max(0, (int)(sampleRate * (envelopeInfo.DelayTime + envelopeInfo.Vel2Delay * velocity)));
//Attack
stages[1].offset = envelopeInfo.StartLevel;
stages[1].scale = envelopeInfo.PeakLevel - envelopeInfo.StartLevel;
stages[1].time = Math.Max(0, (int)(sampleRate * (envelopeInfo.AttackTime + envelopeInfo.Vel2Attack * velocity)));
stages[1].graph = Tables.EnvelopeTables[envelopeInfo.AttackGraph];
//Hold
stages[2].offset = 0;
stages[2].scale = envelopeInfo.PeakLevel;
stages[2].time = Math.Max(0, (int)(sampleRate * (envelopeInfo.HoldTime + envelopeInfo.Vel2Hold * velocity)));
//Decay
stages[3].offset = envelopeInfo.SustainLevel;
stages[3].scale = envelopeInfo.PeakLevel - envelopeInfo.SustainLevel;
stages[3].time = Math.Max(0, (int)(sampleRate * (envelopeInfo.DecayTime + envelopeInfo.Vel2Decay * velocity)));
stages[3].graph = Tables.EnvelopeTables[envelopeInfo.DecayGraph];
//Sustain
stages[4].offset = 0;
stages[4].scale = envelopeInfo.SustainLevel + envelopeInfo.Vel2Sustain * velocity;
stages[4].time = (int)(sampleRate * envelopeInfo.SustainTime);
//Release
stages[5].offset = 0;
stages[5].scale = (stages[3].time == 0 && stages[4].time == 0) ? envelopeInfo.PeakLevel : stages[4].scale;
stages[5].time = Math.Max(0, (int)(sampleRate * (envelopeInfo.ReleaseTime + envelopeInfo.Vel2Release * velocity)));
stages[5].graph = Tables.EnvelopeTables[envelopeInfo.ReleaseGraph];
//None
stages[6].scale = 0;
//Reset value, index, and starting state
index = 0; value = 0;
envState = EnvelopeStateEnum.Delay;
while (stages[(int)envState].time == 0)
{
envState++;
}
stage = stages[(int)envState];
}
public void QuickSetup(int sampleRate, float velocity, EnvelopeDescriptor envelopeInfo)
{
depth = envelopeInfo.Depth + velocity * envelopeInfo.Vel2Depth;
//Delay
stages[0].offset = 0;
stages[0].scale = 0;
stages[0].time = Math.Max(0, (int)(sampleRate * (envelopeInfo.DelayTime + envelopeInfo.Vel2Delay * velocity)));
//Attack
stages[1].offset = envelopeInfo.StartLevel;
stages[1].scale = envelopeInfo.PeakLevel - envelopeInfo.StartLevel;
stages[1].time = Math.Max(0, (int)(sampleRate * (envelopeInfo.AttackTime + envelopeInfo.Vel2Attack * velocity)));
stages[1].graph = Tables.EnvelopeTables[envelopeInfo.AttackGraph];
//Hold
stages[2].offset = 0;
stages[2].scale = envelopeInfo.PeakLevel;
stages[2].time = Math.Max(0, (int)(sampleRate * (envelopeInfo.HoldTime + envelopeInfo.Vel2Hold * velocity)));
//Decay
stages[3].offset = envelopeInfo.SustainLevel;
stages[3].scale = envelopeInfo.PeakLevel - envelopeInfo.SustainLevel;
stages[3].time = Math.Max(0, (int)(sampleRate * (envelopeInfo.DecayTime + envelopeInfo.Vel2Decay * velocity)));
stages[3].graph = Tables.EnvelopeTables[envelopeInfo.DecayGraph];
//Sustain
stages[4].offset = 0;
stages[4].scale = envelopeInfo.SustainLevel + envelopeInfo.Vel2Sustain * velocity;
stages[4].time = (int)(sampleRate * envelopeInfo.SustainTime);
//Release
stages[5].offset = 0;
stages[5].scale = (stages[3].time == 0 && stages[4].time == 0) ? envelopeInfo.PeakLevel : stages[4].scale;
stages[5].time = Math.Max(0, (int)(sampleRate * (envelopeInfo.ReleaseTime + envelopeInfo.Vel2Release * velocity)));
stages[5].graph = Tables.EnvelopeTables[envelopeInfo.ReleaseGraph];
//None
stages[6].scale = 0;
//Reset value, index, and starting state
index = 0; value = 0;
envState = EnvelopeStateEnum.Delay;
while (stages[(int)envState].time == 0)
{
envState++;
}
stage = stages[(int)envState];
}
public void ReleaseSf2VolumeEnvelope()
{
if (value <= -100)
{
index = 0;
envState = EnvelopeStateEnum.None;
stage = stages[(int)envState];
}
else if (envState < EnvelopeStateEnum.Release)
{
index = 0;
envState = EnvelopeStateEnum.Release;
stage = stages[(int)envState];
stage.offset = -100;
stage.scale = 100 + value;
}
}
public void Release(float lowerLimit)
{
if (value <= lowerLimit)
{
index = 0;
envState = EnvelopeStateEnum.None;
stage = stages[(int)envState];
}
else if (envState < EnvelopeStateEnum.Release)
{
index = 0;
envState = EnvelopeStateEnum.Release;
stage = stages[(int)envState];
stage.scale = value;
}
}
public void Increment(int samples)
{
do
{
int neededSamples = stage.time - index;
if (neededSamples > samples)
{
index += samples;
samples = 0;
}
else
{
index = 0;
if (envState != EnvelopeStateEnum.None)
{
do
{
stage = stages[(int)++envState];
}
while (stage.time == 0);
}
samples -= neededSamples;
}
}
while (samples > 0);
int i = (int)(stage.graph.Length * (index / (double)stage.time));
if (stage.reverse)
value = (1f - stage.graph[i]) * stage.scale + stage.offset;
else
value = stage.graph[i] * stage.scale + stage.offset;
}
public void QuickSetupSf2(int sampleRate, int note, short keyNumToHold, short keyNumToDecay, bool isVolumeEnvelope, EnvelopeDescriptor envelopeInfo)
{
depth = envelopeInfo.Depth;
//Delay
stages[0].offset = 0;
stages[0].scale = 0;
stages[0].time = Math.Max(0, (int)(sampleRate * (envelopeInfo.DelayTime)));
//Attack
stages[1].offset = envelopeInfo.StartLevel;
stages[1].scale = envelopeInfo.PeakLevel - envelopeInfo.StartLevel;
stages[1].time = Math.Max(0, (int)(sampleRate * (envelopeInfo.AttackTime)));
stages[1].graph = Tables.EnvelopeTables[envelopeInfo.AttackGraph];
//Hold
stages[2].offset = 0;
stages[2].scale = envelopeInfo.PeakLevel;
stages[2].time = Math.Max(0, (int)(sampleRate * (envelopeInfo.HoldTime) * Math.Pow(2, ((60 - note) * keyNumToHold) / 1200.0)));
//Decay
stages[3].offset = envelopeInfo.SustainLevel;
stages[3].scale = envelopeInfo.PeakLevel - envelopeInfo.SustainLevel;
if (envelopeInfo.SustainLevel == envelopeInfo.PeakLevel)
stages[3].time = 0;
else
stages[3].time = Math.Max(0, (int)(sampleRate * (envelopeInfo.DecayTime) * Math.Pow(2, ((60 - note) * keyNumToDecay) / 1200.0)));
stages[3].graph = Tables.EnvelopeTables[envelopeInfo.DecayGraph];
//Sustain
stages[4].offset = 0;
stages[4].scale = envelopeInfo.SustainLevel;
stages[4].time = (int)(sampleRate * envelopeInfo.SustainTime);
//Release
stages[5].scale = stages[3].time == 0 && stages[4].time == 0 ? envelopeInfo.PeakLevel : stages[4].scale;
if (isVolumeEnvelope)
{
stages[5].offset = -100;
stages[5].scale += 100;
stages[6].scale = -100;
}
else
{
stages[5].offset = 0;
stages[6].scale = 0;
}
stages[5].time = Math.Max(0, (int)(sampleRate * (envelopeInfo.ReleaseTime)));
stages[5].graph = Tables.EnvelopeTables[envelopeInfo.ReleaseGraph];
//Reset value, index, and starting state
index = 0; value = 0;
envState = EnvelopeStateEnum.Delay;
while (stages[(int)envState].time == 0)
{
envState++;
}
stage = stages[(int)envState];
}
