|
public CopyTo ( |
||
| destinationData | ||
| destinationIndex | int | |
| sourceIndex | int | |
| length | int | |
| return | void | |
/// <summary>
/// Called by GATPlayer.
/// Needed when overriding default mixing:
/// If a sample is routed through a track,
/// it should be mixed to it.
/// </summary>
public void MixFrom(GATData data, int index, int offsetInBuffer, int length, float gain = 1f)
{
if (!_active)
{
return;
}
if (_bufferIsDirty) //Contains old data
{
int lastIndex = offsetInBuffer + length;
if (lastIndex < GATInfo.AudioBufferSizePerChannel || offsetInBuffer > 0) //if what we want to add to the buffer doesn't fill it, let's clear it first
{
_trackBuffer.Clear();
}
if (gain == 1f)
{
data.CopyTo(_trackBuffer, offsetInBuffer, index, length); // no need to mix on dirty or empty data, simply copy
}
else
{
data.CopyGainTo(_trackBuffer, index, offsetInBuffer, length, gain);
}
_bufferIsDirty = false;
}
else
{
if (gain == 1f)
{
data.MixTo(_trackBuffer, offsetInBuffer, index, length);
}
else
{
data.GainMixTo(_trackBuffer, index, offsetInBuffer, length, gain);
}
}
NbOfMixedSamples++;
_hasData = true;
}
protected void FillWithSampleData(GATData sourceData, GATData targetData, int fromIndex, int length)
{
bool tooLong = (fromIndex + length > sourceData.Count);
int appliedLength = tooLong ? sourceData.Count - fromIndex : length;
if (appliedLength < 0)
{
#if GAT_DEBUG
Debug.LogWarning("requested offset is out of bounds.");
#endif
return;
}
sourceData.CopyTo(targetData, 0, fromIndex, appliedLength);
#if GAT_DEBUG
if (tooLong)
{
Debug.LogWarning("requested length at fromIndex out of bounds, filling as much as possible");
}
#endif
}
/// <summary>
/// Called by GATPlayer.
/// Needed when overriding default mixing:
/// If a sample is routed through a track,
/// it should be mixed to it.
/// </summary>
public void MixFrom( GATData data, int index, int offsetInBuffer, int length, float gain = 1f )
{
if( !_active )
return;
if( _bufferIsDirty ) //Contains old data
{
int lastIndex = offsetInBuffer + length;
if( lastIndex < GATInfo.AudioBufferSizePerChannel || offsetInBuffer > 0 ) //if what we want to add to the buffer doesn't fill it, let's clear it first
{
_trackBuffer.Clear();
}
if( gain == 1f )
{
data.CopyTo( _trackBuffer, offsetInBuffer, index, length ); // no need to mix on dirty or empty data, simply copy
}
else
{
data.CopyGainTo( _trackBuffer, index, offsetInBuffer, length, gain );
}
_bufferIsDirty = false;
}
else
{
if( gain == 1f )
{
data.MixTo( _trackBuffer, offsetInBuffer, index, length );
}
else
{
data.GainMixTo( _trackBuffer, index, offsetInBuffer, length, gain );
}
}
NbOfMixedSamples++;
_hasData = true;
}
protected void FillWithSampleData( GATData sourceData, GATData targetData, int fromIndex, int length )
{
bool tooLong = ( fromIndex + length > sourceData.Count );
int appliedLength = tooLong ? sourceData.Count - fromIndex : length;
if( appliedLength < 0 )
{
#if GAT_DEBUG
Debug.LogWarning( "requested offset is out of bounds." );
#endif
return;
}
sourceData.CopyTo( targetData, 0, fromIndex, appliedLength );
#if GAT_DEBUG
if( tooLong )
{
Debug.LogWarning( "requested length at fromIndex out of bounds, filling as much as possible" );
}
#endif
}
bool PlayerWillMixSample(IGATBufferedSample sample, int length, float[] audioBuffer)
{
int indexInProcessingBuffer = 0;
int appliedLength;
int lengthToMix = length;
float fromGain, toGain;
switch (_currentState)
{
case State.Attack:
if (_nextIndex >= _decayStartIndex) //handle attack = 0;
{
_currentState = State.Decay;
goto case State.Decay;
}
else
{
if (sample.IsFirstChunk && length > _attackLength)
{
appliedLength = _attackLength;
}
else
{
appliedLength = length;
}
//Interpolate gain
fromGain = (( float )(_nextIndex - _attackStartIndex)) / (_attackLength);
if (_nextIndex + appliedLength >= _decayStartIndex) //attack slope will finish before the end of the buffer
{
appliedLength = _decayStartIndex - _nextIndex;
toGain = 1f;
_data.CopySmoothedGainTo(_nextIndex, sample.ProcessingBuffer, 0, appliedLength, fromGain, toGain);
_nextIndex = _decayStartIndex;
indexInProcessingBuffer = appliedLength;
_currentState = State.Decay;
goto case State.Decay;
}
else
{
toGain = (( float )(_nextIndex + appliedLength - _attackStartIndex)) / (_attackLength);
_data.CopySmoothedGainTo(_nextIndex, sample.ProcessingBuffer, 0, appliedLength, fromGain, toGain);
_nextIndex += appliedLength;
}
}
break;
case State.Decay:
appliedLength = GATInfo.AudioBufferSizePerChannel - indexInProcessingBuffer;
if (_nextIndex + appliedLength >= _loopStartIndex) // decay will end this buffer
{
appliedLength = _loopStartIndex - _nextIndex;
_data.CopyTo(sample.ProcessingBuffer, indexInProcessingBuffer, _nextIndex, appliedLength);
_nextIndex = _loopStartIndex;
indexInProcessingBuffer += appliedLength;
if (_noLoop)
{
_currentState = State.Release;
goto case State.Release;
}
else if (_loopCrossfadeLength == _loopLength)
{
_currentState = State.SustainCrossfade;
goto case State.SustainCrossfade;
}
else
{
_currentState = State.Sustain;
goto case State.Sustain;
}
}
else
{
_data.CopyTo(sample.ProcessingBuffer, indexInProcessingBuffer, _nextIndex, appliedLength);
_nextIndex += appliedLength;
}
break;
case State.Sustain:
appliedLength = GATInfo.AudioBufferSizePerChannel - indexInProcessingBuffer;
if (_nextIndex + appliedLength >= _loopCrossfadeIndex) // will start crossfading in this buffer
{
appliedLength = _loopCrossfadeIndex - _nextIndex;
_data.CopyTo(sample.ProcessingBuffer, indexInProcessingBuffer, _nextIndex, appliedLength);
indexInProcessingBuffer += appliedLength;
_nextIndex += appliedLength;
if (_keepLooping)
{
_currentState = State.SustainCrossfade;
goto case State.SustainCrossfade;
}
else
{
_releaseIndex = _nextIndex;
_endIndex = _nextIndex + _releaseLength;
_currentState = State.Release;
goto case State.Release;
}
}
else
{
_data.CopyTo(sample.ProcessingBuffer, indexInProcessingBuffer, _nextIndex, appliedLength);
_nextIndex += appliedLength;
}
break;
case State.SustainCrossfade:
appliedLength = GATInfo.AudioBufferSizePerChannel - indexInProcessingBuffer;
int crossfadeOffset = _nextIndex - _loopCrossfadeIndex;
//Crossfade gains
fromGain = 1f - ( float )(crossfadeOffset) / _loopCrossfadeLength;
if (_nextIndex + appliedLength > _loopEndIndex) //will finish loop in current buffer
{
appliedLength = _loopEndIndex - _nextIndex;
_data.CopySmoothedGainTo(_nextIndex, sample.ProcessingBuffer, indexInProcessingBuffer, appliedLength, fromGain, 0f);
_data.MixSmoothedGainTo(_loopStartIndex - (_loopCrossfadeLength - crossfadeOffset), sample.ProcessingBuffer, indexInProcessingBuffer, appliedLength, 1f - fromGain, 1f);
indexInProcessingBuffer += appliedLength;
_nextIndex = _loopStartIndex; //need to loop even if release, as xfade has already started
if (_keepLooping)
{
_currentState = State.Sustain;
goto case State.Sustain;
}
else
{
_releaseIndex = _loopStartIndex;
_endIndex = _loopStartIndex + _releaseLength;
_currentState = State.Release;
goto case State.Release;
}
}
else
{
//crossfade gain
toGain = 1f - ( float )(crossfadeOffset + appliedLength) / _loopCrossfadeLength;
_data.CopySmoothedGainTo(_nextIndex, sample.ProcessingBuffer, indexInProcessingBuffer, appliedLength, fromGain, toGain);
_data.MixSmoothedGainTo(_loopStartIndex - (_loopCrossfadeLength - crossfadeOffset), sample.ProcessingBuffer, indexInProcessingBuffer, appliedLength, 1f - fromGain, 1f - toGain);
_nextIndex += appliedLength;
}
break;
case State.Release:
appliedLength = GATInfo.AudioBufferSizePerChannel - indexInProcessingBuffer;
fromGain = 1f - (( float )(_nextIndex - _releaseIndex)) / (_releaseLength);
if (_nextIndex + appliedLength >= _endIndex) //release slope will finish before the end of the buffer
{
toGain = 0f;
sample.IsLastChunk = true;
IsPlaying = false;
appliedLength = _endIndex - _nextIndex;
lengthToMix = appliedLength + indexInProcessingBuffer;
_data.CopySmoothedGainTo(_nextIndex, sample.ProcessingBuffer, indexInProcessingBuffer, appliedLength, fromGain, toGain);
}
else
{
toGain = 1f - (( float )(_nextIndex + appliedLength - _releaseIndex)) / (_releaseLength);
_data.CopySmoothedGainTo(_nextIndex, sample.ProcessingBuffer, indexInProcessingBuffer, appliedLength, fromGain, toGain);
_nextIndex += appliedLength;
}
break;
}
sample.NextIndex = _nextIndex;
sample.Track.MixFrom(sample.ProcessingBuffer, 0, sample.OffsetInBuffer, lengthToMix);
return(false);
}