TimeStretcher Class Reference

Collaboration diagram for TimeStretcher:

Public Member Functions
bool	init (Sample *sample, VoiceSample *voiceSample, SamplePlaybackGuide *guide, int64_t newSamplePosBig, int32_t numChannels, int32_t phaseIncrement, int32_t timeStretchRatio, int32_t playDirection, int32_t priorityRating, int32_t fudgingNumSamplesTilLoop, LoopType loopingType)
void	reInit (int64_t newSamplePosBig, SamplePlaybackGuide *guide, VoiceSample *voiceSample, Sample *sample, int32_t numChannels, int32_t timeStretchRatio, int32_t phaseIncrement, uint64_t combinedIncrement, int32_t playDirection, LoopType loopingType, int32_t priorityRating)
void	beenUnassigned ()
void	unassignAllReasonsForPercLookahead ()
void	unassignAllReasonsForPercCacheClusters ()
bool	hopEnd (SamplePlaybackGuide *guide, VoiceSample *voiceSample, Sample *sample, int32_t numChannels, int32_t timeStretchRatio, int32_t phaseIncrement, uint64_t combinedIncrement, int32_t playDirection, LoopType loopingType, int32_t priorityRating)
void	rememberPercCacheCluster (Cluster *cluster)
void	updateClustersForPercLookahead (Sample *sample, uint32_t sourceBytePos, int32_t playDirection)
int32_t	getSamplePos (int32_t playDirection)
bool	allocateBuffer (int32_t numChannels)
void	readFromBuffer (int32_t *oscBufferPos, int32_t numSamples, int32_t numChannels, int32_t numChannelsAfterCondensing, int32_t sourceAmplitudeNow, int32_t amplitudeIncrementNow, int32_t *bufferReadPos)
void	setupCrossfadeFromCache (SampleCache *cache, int32_t cacheBytePos, int32_t numChannels)

Public Attributes
int64_t	samplePosBig
uint32_t	crossfadeProgress
uint32_t	crossfadeIncrement
int32_t	samplesTilHopEnd
SampleLowLevelReader	olderPartReader
int32_t *	buffer
bool	olderHeadReadingFromBuffer
bool	hasLoopedBackIntoPreMargin
bool	playHeadStillActive [2]
uint8_t	numTimesMissedHop
int32_t	olderBufferReadPos
Cluster *	clustersForPercLookahead [kNumClustersLoadedAhead]
Cluster *	percCacheClustersNearby [2]

Private Member Functions
bool	setupNewPlayHead (Sample *sample, VoiceSample *voiceSample, SamplePlaybackGuide *guide, int32_t newHeadBytePos, int32_t additionalOscPos, int32_t priorityRating, LoopType loopingType)

Member Function Documentation

setupNewPlayHead()

bool TimeStretcher::setupNewPlayHead ( Sample * sample, VoiceSample * voiceSample, SamplePlaybackGuide * guide, int32_t newHeadBytePos, int32_t additionalOscPos, int32_t priorityRating, LoopType loopingType )

private

Unassign the remainder of the sample clusters and set the time back to the beginning Note - not perfectly thread safe for samples which are less than 64k in size. An allocation between unassigning reasons and setupClustersForPlayFromByte can lead to an incorrect steal and then re allocation as the sample may briefly have 0 reasons

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The documentation for this class was generated from the following files:

• src/deluge/dsp/timestretch/time_stretcher.h
• src/deluge/dsp/timestretch/time_stretcher.cpp