TSampleBuffer | Unreal Engine 5.8 Documentation

API > API/Runtime > API/Runtime/SignalProcessing

TSampleBuffer This class owns an audio buffer. To convert between fixed Q15 buffers and float buffers, Use the assignment operator. Example: TSampleBuffer AFloatBuffer; TSampleBuffer AnIntBuffer = AFloatBuffer;


Name	TSampleBuffer
Type	class
Header File	/Engine/Source/Runtime/SignalProcessing/Public/SampleBuffer.h
Include Path	#include "SampleBuffer.h"

Syntax

template<class SampleType>  
class TSampleBuffer

Constructors

Name	Remarks	Include Path	Unreal Specifiers
TSampleBuffer ( const float* InBufferPtr, int32 InNumSamples, int32 InNumChannels, int32 InSampleRate )		SampleBuffer.h
TSampleBuffer ()		SampleBuffer.h
TSampleBuffer ( const TSampleBuffer& Other )		SampleBuffer.h
TSampleBuffer ( const FAlignedFloatBuffer& InData, int32 InNumChannels, int32 InSampleRate )		SampleBuffer.h
TSampleBuffer ( const int16* InBufferPtr, int32 InNumSamples, int32 InNumChannels, int32 InSampleRate )		SampleBuffer.h

Destructors

Name	Remarks	Include Path	Unreal Specifiers
~TSampleBuffer()		SampleBuffer.h

Variables

Protected

Name	Type	Remarks	Include Path
NumChannels	int32	The number of channels in the buffer.	SampleBuffer.h
NumFrames	int32	The number of frames in the buffer.	SampleBuffer.h
NumSamples	int32	The number of samples in the buffer.	SampleBuffer.h
RawPCMData	TArray< SampleType >	Raw PCM data buffer	SampleBuffer.h
SampleDuration	float	The duration of the buffer in seconds.	SampleBuffer.h
SampleRate	int32	The sample rate of the buffer	SampleBuffer.h

Functions

Public

Name	Remarks	Include Path
void Append ( const OtherSampleType* InputBuffer, int32 InNumSamples, int32 InNumChannels, int32 InSampleRate )	Overload of Append that also sets the number of channels and sample rate.	SampleBuffer.h
void Append ( const OtherSampleType* InputBuffer, int32 InNumSamples )	Append audio data to internal buffer of different sample type of this sample buffer.	SampleBuffer.h
void Clamp ( float Ceiling )		SampleBuffer.h
void CopyFrom ( const TArray< SampleType >& InArray, int32 InNumChannels, int32 InSampleRate )	Copy from a container of the same element type	SampleBuffer.h
TArrayView< const SampleType > GetArrayView ()		SampleBuffer.h
TArrayView< SampleType > GetArrayView ()		SampleBuffer.h
float GetAudioFrameAtFractionalIndex ( float InIndex, TArray< SampleType >& OutFrame ) const	InIndex [0.0f, NumSamples - 1.0f] OutFrame is the multichannel output for one index value Returns InIndex wrapped between 0.0 and NumFrames	SampleBuffer.h
float GetAudioFrameAtPhase ( float InPhase, TArray< SampleType >& OutFrame ) const	InPhase [0, 1], wrapped, through duration of file (ignores sample rate) OutFrame is the multichannel output for one phase value Returns InPhase wrapped between 0.0 and 1.0	SampleBuffer.h
float GetAudioFrameAtTime ( float InTimeSec, TArray< SampleType >& OutFrame ) const	InTimeSec, get the value of the buffer at the given time (uses sample rate) OutFrame is the multichannel output for one time value Returns InTimeSec wrapped between 0.0 and (NumSamples / SampleRate)	SampleBuffer.h
const SampleType * GetData()	Gets the raw PCM data of the sound wave.	SampleBuffer.h
int32 GetNumChannels()	Gets the number of channels of the sound wave.	SampleBuffer.h
int32 GetNumFrames()	Gets the number of frames of the sound wave.	SampleBuffer.h
int32 GetNumSamples()	Gets the number of samples of the sound wave.	SampleBuffer.h
float GetSampleDuration()		SampleBuffer.h
int32 GetSampleRate()	Gets the sample rate of the sound wave.	SampleBuffer.h
void MixBufferToChannels ( int32 InNumChannels )		SampleBuffer.h
void Reset()		SampleBuffer.h
void SetNumFrames ( int32 InNumFrames )		SampleBuffer.h
void ZeroPad ( int32 NumFramesToAppend )	Appends zeroes to the end of this buffer.	SampleBuffer.h

Operators

Name	Remarks	Include Path	Unreal Specifiers
TSampleBuffer & operator= ( const TSampleBuffer& Other )	Vanilla assignment operator:	SampleBuffer.h
TSampleBuffer & operator= ( const TSampleBuffer< OtherSampleType >& Other )	SampleType converting assignment operator:	SampleBuffer.h

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