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19e92146d9
Submitting on behalf of Jeff Rous #rb phil.popp #jira UE-141709 #fyi jeff.rous #preflight 624b22e773665f7d5e84281e [CL 19611484 by phil popp in ue5-main branch]
202 lines
17 KiB
C++
202 lines
17 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#pragma once
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#include "CoreMinimal.h"
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#if PLATFORM_SWITCH
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// Switch uses page alignment for submitted buffers
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#define AUDIO_BUFFER_ALIGNMENT 4096
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#else
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#define AUDIO_BUFFER_ALIGNMENT 16
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#endif
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#define AUDIO_SIMD_BYTE_ALIGNMENT (16)
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#define AUDIO_NUM_FLOATS_PER_VECTOR_REGISTER (4)
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namespace Audio
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{
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/** Aligned allocator used for fast operations. */
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using FAudioBufferAlignedAllocator = TAlignedHeapAllocator<AUDIO_BUFFER_ALIGNMENT>;
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using FAlignedByteBuffer = TArray<uint8, FAudioBufferAlignedAllocator>;
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using FAlignedFloatBuffer = TArray<float, FAudioBufferAlignedAllocator>;
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using FAlignedInt32Buffer = TArray<int32, FAudioBufferAlignedAllocator>;
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// Deprecated in favor of versions above
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typedef TArray<uint8, FAudioBufferAlignedAllocator> AlignedByteBuffer;
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typedef TArray<float, FAudioBufferAlignedAllocator> AlignedFloatBuffer;
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typedef TArray<int32, FAudioBufferAlignedAllocator> AlignedInt32Buffer;
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/** CHANNEL-SPECIFIC OPERATIONS */
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/** Takes a 2 channel interleaved buffer and applies Gains to it. Gains is expected to point to a 2 float long buffer.
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* StereoBuffer must have an even number of frames.
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* If StartGains and EndGains are provided, this function will interpolate between the two across the buffer.
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*/
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SIGNALPROCESSING_API void Apply2ChannelGain(FAlignedFloatBuffer& StereoBuffer, const float* RESTRICT Gains);
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SIGNALPROCESSING_API void Apply2ChannelGain(float* RESTRICT StereoBuffer, int32 NumSamples, const float* RESTRICT Gains);
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SIGNALPROCESSING_API void Apply2ChannelGain(FAlignedFloatBuffer& StereoBuffer, const float* RESTRICT StartGains, const float* RESTRICT EndGains);
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SIGNALPROCESSING_API void Apply2ChannelGain(float* RESTRICT StereoBuffer, int32 NumSamples, const float* RESTRICT StartGains, const float* RESTRICT EndGains);
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/** Takes a 1 channel buffer and mixes it to a stereo buffer using Gains. Gains is expected to point to a 2 float long buffer.
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* these buffers must have an even number of frames.
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* If StartGains and EndGains are provided, this function will interpolate between the two across the buffer.
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*/
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SIGNALPROCESSING_API void MixMonoTo2ChannelsFast(const FAlignedFloatBuffer& MonoBuffer, FAlignedFloatBuffer& DestinationBuffer, const float* RESTRICT Gains);
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SIGNALPROCESSING_API void MixMonoTo2ChannelsFast(const float* RESTRICT MonoBuffer, float* RESTRICT DestinationBuffer, int32 NumFrames, const float* RESTRICT Gains);
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SIGNALPROCESSING_API void MixMonoTo2ChannelsFast(const FAlignedFloatBuffer& MonoBuffer, FAlignedFloatBuffer& DestinationBuffer, const float* RESTRICT StartGains, const float* RESTRICT EndGains);
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SIGNALPROCESSING_API void MixMonoTo2ChannelsFast(const float* RESTRICT MonoBuffer, float* RESTRICT DestinationBuffer, int32 NumFrames, const float* RESTRICT StartGains, const float* RESTRICT EndGains);
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SIGNALPROCESSING_API void MixMonoTo2ChannelsFast(const FAlignedFloatBuffer& MonoBuffer, FAlignedFloatBuffer& DestinationBuffer);
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SIGNALPROCESSING_API void MixMonoTo2ChannelsFast(const float* RESTRICT MonoBuffer, float* RESTRICT DestinationBuffer, int32 NumFrames);
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/** Takes a 2 channel buffer and mixes it to an 2 channel interleaved buffer using Gains. Gains is expected to point to a 16 float long buffer.
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* Output gains for the left input channel should be the first 8 values in Gains, and Output gains for the right input channel should be rest.
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* NumFrames must be a multiple of 4.
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* If StartGains and EndGains are provided, this function will interpolate between the two across the buffer.
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*/
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SIGNALPROCESSING_API void Mix2ChannelsTo2ChannelsFast(const FAlignedFloatBuffer& SourceBuffer, FAlignedFloatBuffer& DestinationBuffer, const float* RESTRICT Gains);
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SIGNALPROCESSING_API void Mix2ChannelsTo2ChannelsFast(const float* RESTRICT SourceBuffer, float* RESTRICT DestinationBuffer, int32 NumFrames, const float* RESTRICT Gains);
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SIGNALPROCESSING_API void Mix2ChannelsTo2ChannelsFast(const FAlignedFloatBuffer& SourceBuffer, FAlignedFloatBuffer& DestinationBuffer, const float* RESTRICT StartGains, const float* RESTRICT EndGains);
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SIGNALPROCESSING_API void Mix2ChannelsTo2ChannelsFast(const float* RESTRICT SourceBuffer, float* RESTRICT DestinationBuffer, int32 NumFrames, const float* RESTRICT StartGains, const float* RESTRICT EndGains);
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/** Takes a 4 channel interleaved buffer and applies Gains to it. Gains is expected to point to a 2 float long buffer.
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* If StartGains and EndGains are provided, this function will interpolate between the two across the buffer.
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*/
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SIGNALPROCESSING_API void Apply4ChannelGain(FAlignedFloatBuffer& InterleavedBuffer, const float* RESTRICT Gains);
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SIGNALPROCESSING_API void Apply4ChannelGain(float* RESTRICT InterleavedBuffer, int32 NumSamples, const float* RESTRICT Gains);
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SIGNALPROCESSING_API void Apply4ChannelGain(FAlignedFloatBuffer& InterleavedBuffer, const float* RESTRICT StartGains, const float* RESTRICT EndGains);
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SIGNALPROCESSING_API void Apply4ChannelGain(float* RESTRICT InterleavedBuffer, int32 NumSamples, const float* RESTRICT StartGains, const float* RESTRICT EndGains);
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/** Takes a 1 channel buffer and mixes it to an 8 channel interleaved buffer using Gains. Gains is expected to point to a 8 float long buffer.
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* these buffers must have an even number of frames.
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* If StartGains and EndGains are provided, this function will interpolate between the two across the buffer.
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*/
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SIGNALPROCESSING_API void MixMonoTo4ChannelsFast(const FAlignedFloatBuffer& MonoBuffer, FAlignedFloatBuffer& DestinationBuffer, const float* RESTRICT Gains);
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SIGNALPROCESSING_API void MixMonoTo4ChannelsFast(const float* RESTRICT MonoBuffer, float* RESTRICT DestinationBuffer, int32 NumFrames, const float* RESTRICT Gains);
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SIGNALPROCESSING_API void MixMonoTo4ChannelsFast(const FAlignedFloatBuffer& MonoBuffer, FAlignedFloatBuffer& DestinationBuffer, const float* RESTRICT StartGains, const float* RESTRICT EndGains);
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SIGNALPROCESSING_API void MixMonoTo4ChannelsFast(const float* RESTRICT MonoBuffer, float* RESTRICT DestinationBuffer, int32 NumFrames, const float* RESTRICT StartGains, const float* RESTRICT EndGains);
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/** Takes a 2 channel buffer and mixes it to an 8 channel interleaved buffer using Gains. Gains is expected to point to a 16 float long buffer.
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* Output gains for the left input channel should be the first 8 values in Gains, and Output gains for the right input channel should be rest.
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* NumFrames must be a multiple of 4.
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* If StartGains and EndGains are provided, this function will interpolate between the two across the buffer.
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*/
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SIGNALPROCESSING_API void Mix2ChannelsTo4ChannelsFast(const FAlignedFloatBuffer& SourceBuffer, FAlignedFloatBuffer& DestinationBuffer, const float* RESTRICT Gains);
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SIGNALPROCESSING_API void Mix2ChannelsTo4ChannelsFast(const float* RESTRICT SourceBuffer, float* RESTRICT DestinationBuffer, int32 NumFrames, const float* RESTRICT Gains);
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SIGNALPROCESSING_API void Mix2ChannelsTo4ChannelsFast(const FAlignedFloatBuffer& SourceBuffer, FAlignedFloatBuffer& DestinationBuffer, const float* RESTRICT StartGains, const float* RESTRICT EndGains);
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SIGNALPROCESSING_API void Mix2ChannelsTo4ChannelsFast(const float* RESTRICT SourceBuffer, float* RESTRICT DestinationBuffer, int32 NumFrames, const float* RESTRICT StartGains, const float* RESTRICT EndGains);
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/** Takes a 6 channel interleaved buffer and applies Gains to it. Gains is expected to point to a 2 float long buffer.
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* InterleavedBuffer must have an even number of frames.
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*/
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SIGNALPROCESSING_API void Apply6ChannelGain(FAlignedFloatBuffer& InterleavedBuffer, const float* RESTRICT Gains);
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SIGNALPROCESSING_API void Apply6ChannelGain(float* RESTRICT InterleavedBuffer, int32 NumSamples, const float* RESTRICT Gains);
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SIGNALPROCESSING_API void Apply6ChannelGain(FAlignedFloatBuffer& InterleavedBuffer, const float* RESTRICT StartGains, const float* RESTRICT EndGains);
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SIGNALPROCESSING_API void Apply6ChannelGain(float* RESTRICT InterleavedBuffer, int32 NumSamples, const float* RESTRICT StartGains, const float* RESTRICT EndGains);
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/** Takes a 1 channel buffer and mixes it to an 8 channel interleaved buffer using Gains. Gains is expected to point to a 8 float long buffer.
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* these buffers must have an even number of frames.
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* If StartGains and EndGains are provided, this function will interpolate between the two across the buffer.
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*/
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SIGNALPROCESSING_API void MixMonoTo6ChannelsFast(const FAlignedFloatBuffer& MonoBuffer, FAlignedFloatBuffer& DestinationBuffer, const float* RESTRICT Gains);
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SIGNALPROCESSING_API void MixMonoTo6ChannelsFast(const float* RESTRICT MonoBuffer, float* RESTRICT DestinationBuffer, int32 NumFrames, const float* RESTRICT Gains);
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SIGNALPROCESSING_API void MixMonoTo6ChannelsFast(const FAlignedFloatBuffer& MonoBuffer, FAlignedFloatBuffer& DestinationBuffer, const float* RESTRICT StartGains, const float* RESTRICT EndGains);
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SIGNALPROCESSING_API void MixMonoTo6ChannelsFast(const float* RESTRICT MonoBuffer, float* RESTRICT DestinationBuffer, int32 NumFrames, const float* RESTRICT StartGains, const float* RESTRICT EndGains);
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/** Takes a 2 channel buffer and mixes it to an 8 channel interleaved buffer using Gains. Gains is expected to point to a 16 float long buffer.
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* Output gains for the left input channel should be the first 8 values in Gains, and Output gains for the right input channel should be rest.
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* NumFrames must be a multiple of 4.
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* If StartGains and EndGains are provided, this function will interpolate between the two across the buffer.
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*/
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SIGNALPROCESSING_API void Mix2ChannelsTo6ChannelsFast(const FAlignedFloatBuffer& SourceBuffer, FAlignedFloatBuffer& DestinationBuffer, const float* RESTRICT Gains);
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SIGNALPROCESSING_API void Mix2ChannelsTo6ChannelsFast(const float* RESTRICT SourceBuffer, float* RESTRICT DestinationBuffer, int32 NumFrames, const float* RESTRICT Gains);
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SIGNALPROCESSING_API void Mix2ChannelsTo6ChannelsFast(const FAlignedFloatBuffer& SourceBuffer, FAlignedFloatBuffer& DestinationBuffer, const float* RESTRICT StartGains, const float* RESTRICT EndGains);
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SIGNALPROCESSING_API void Mix2ChannelsTo6ChannelsFast(const float* RESTRICT SourceBuffer, float* RESTRICT DestinationBuffer, int32 NumFrames, const float* RESTRICT StartGains, const float* RESTRICT EndGains);
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/** Takes an 8 channel interleaved buffer and applies Gains to it. Gains is expected to point to an 8 float long buffer. */
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SIGNALPROCESSING_API void Apply8ChannelGain(FAlignedFloatBuffer& InterleavedBuffer, const float* RESTRICT Gains);
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SIGNALPROCESSING_API void Apply8ChannelGain(float* RESTRICT InterleavedBuffer, int32 NumSamples, const float* RESTRICT Gains);
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SIGNALPROCESSING_API void Apply8ChannelGain(FAlignedFloatBuffer& InterleavedBuffer, const float* RESTRICT StartGains, const float* RESTRICT EndGains);
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SIGNALPROCESSING_API void Apply8ChannelGain(float* RESTRICT InterleavedBuffer, int32 NumSamples, const float* RESTRICT StartGains, const float* RESTRICT EndGains);
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/** Takes a 1 channel buffer and mixes it to an 8 channel interleaved buffer using Gains. Gains is expected to point to a 8 float long buffer.
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* these buffers must have an even number of frames.
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* If StartGains and EndGains are provided, this function will interpolate between the two across the buffer.
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*/
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SIGNALPROCESSING_API void MixMonoTo8ChannelsFast(const FAlignedFloatBuffer& MonoBuffer, FAlignedFloatBuffer& DestinationBuffer, const float* RESTRICT Gains);
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SIGNALPROCESSING_API void MixMonoTo8ChannelsFast(const float* RESTRICT MonoBuffer, float* RESTRICT DestinationBuffer, int32 NumFrames, const float* RESTRICT Gains);
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SIGNALPROCESSING_API void MixMonoTo8ChannelsFast(const FAlignedFloatBuffer& MonoBuffer, FAlignedFloatBuffer& DestinationBuffer, const float* RESTRICT StartGains, const float* RESTRICT EndGains);
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SIGNALPROCESSING_API void MixMonoTo8ChannelsFast(const float* RESTRICT MonoBuffer, float* RESTRICT DestinationBuffer, int32 NumFrames, const float* RESTRICT StartGains, const float* RESTRICT EndGains);
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/** Takes a 2 channel buffer and mixes it to an 8 channel interleaved buffer using Gains. Gains is expected to point to a 16 float long buffer.
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* Output gains for the left input channel should be the first 8 values in Gains, and Output gains for the right input channel should be rest.
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* these buffers must have an even number of frames.
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* If StartGains and EndGains are provided, this function will interpolate between the two across the buffer.
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*/
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SIGNALPROCESSING_API void Mix2ChannelsTo8ChannelsFast(const FAlignedFloatBuffer& SourceBuffer, FAlignedFloatBuffer& DestinationBuffer, const float* RESTRICT Gains);
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SIGNALPROCESSING_API void Mix2ChannelsTo8ChannelsFast(const float* RESTRICT SourceBuffer, float* RESTRICT DestinationBuffer, int32 NumFrames, const float* RESTRICT Gains);
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SIGNALPROCESSING_API void Mix2ChannelsTo8ChannelsFast(const FAlignedFloatBuffer& SourceBuffer, FAlignedFloatBuffer& DestinationBuffer, const float* RESTRICT StartGains, const float* RESTRICT EndGains);
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SIGNALPROCESSING_API void Mix2ChannelsTo8ChannelsFast(const float* RESTRICT SourceBuffer, float* RESTRICT DestinationBuffer, int32 NumFrames, const float* RESTRICT StartGains, const float* RESTRICT EndGains);
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/** This is a generalized operation that uses the channel gain matrix provided in Gains to mix an interleaved source buffer to the interleaved downmix buffer.
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* This operation is not explicitly vectorized and will almost always be slower than using one of the functions above.
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*/
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SIGNALPROCESSING_API void DownmixBuffer(int32 NumSourceChannels, int32 NumDestinationChannels, const FAlignedFloatBuffer& SourceBuffer, FAlignedFloatBuffer& DestinationBuffer, const float* RESTRICT Gains);
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SIGNALPROCESSING_API void DownmixBuffer(int32 NumSourceChannels, int32 NumDestinationChannels, const float* RESTRICT SourceBuffer, float* RESTRICT DestinationBuffer, int32 NumFrames, const float* RESTRICT Gains);
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SIGNALPROCESSING_API void DownmixBuffer(int32 NumSourceChannels, int32 NumDestinationChannels, const FAlignedFloatBuffer& SourceBuffer, FAlignedFloatBuffer& DestinationBuffer, float* RESTRICT StartGains, const float* RESTRICT EndGains);
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SIGNALPROCESSING_API void DownmixBuffer(int32 NumSourceChannels, int32 NumDestinationChannels, const float* RESTRICT SourceBuffer, float* RESTRICT DestinationBuffer, int32 NumFrames, float* RESTRICT StartGains, const float* RESTRICT EndGains);
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/**
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* This is similar to DownmixBuffer, except that it sums into DestinationBuffer rather than overwriting it.
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*/
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SIGNALPROCESSING_API void DownmixAndSumIntoBuffer(int32 NumSourceChannels, int32 NumDestinationChannels, const FAlignedFloatBuffer& SourceBuffer, FAlignedFloatBuffer& BufferToSumTo, const float* RESTRICT Gains);
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SIGNALPROCESSING_API void DownmixAndSumIntoBuffer(int32 NumSourceChannels, int32 NumDestinationChannels, const float* RESTRICT SourceBuffer, float* RESTRICT BufferToSumTo, int32 NumFrames, const float* RESTRICT Gains);
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/** Interleaves samples from two input buffers */
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SIGNALPROCESSING_API void BufferInterleave2ChannelFast(const FAlignedFloatBuffer& InBuffer1, const FAlignedFloatBuffer& InBuffer2, FAlignedFloatBuffer& OutBuffer);
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/** Interleaves samples from two input buffers */
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SIGNALPROCESSING_API void BufferInterleave2ChannelFast(const float* RESTRICT InBuffer1, const float* RESTRICT InBuffer2, float* RESTRICT OutBuffer, const int32 InNum);
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/** Deinterleaves samples from a 2 channel input buffer */
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SIGNALPROCESSING_API void BufferDeinterleave2ChannelFast(const FAlignedFloatBuffer& InBuffer, FAlignedFloatBuffer& OutBuffer1, FAlignedFloatBuffer& OutBuffer2);
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/** Deinterleaves samples from a 2 channel input buffer */
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SIGNALPROCESSING_API void BufferDeinterleave2ChannelFast(const float* RESTRICT InBuffer, float* RESTRICT OutBuffer1, float* RESTRICT OutBuffer2, const int32 InNum);
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/** Sums 2 channel interleaved input samples. OutSamples[n] = InSamples[2n] + InSamples[2n + 1] */
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SIGNALPROCESSING_API void BufferSum2ChannelToMonoFast(const FAlignedFloatBuffer& InSamples, FAlignedFloatBuffer& OutSamples);
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/** Sums 2 channel interleaved input samples. OutSamples[n] = InSamples[2n] + InSamples[2n + 1] */
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SIGNALPROCESSING_API void BufferSum2ChannelToMonoFast(const float* RESTRICT InSamples, float* RESTRICT OutSamples, const int32 InNumFrames);
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/** Class which handles a vectorized interpolation of an entire buffer to the values of a target buffer */
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class SIGNALPROCESSING_API FBufferLinearEase
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{
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public:
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FBufferLinearEase();
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FBufferLinearEase(const FAlignedFloatBuffer& InSourceValues, const FAlignedFloatBuffer& InTargetValues, int32 InLerpLength);
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~FBufferLinearEase();
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/** will cache SourceValues ptr and manually update SourceValues on Update() */
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void Init(const FAlignedFloatBuffer& InSourceValues, const FAlignedFloatBuffer& InTargetValues, int32 InLerpLength);
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/** Performs Vectorized update of SourceValues float buffer. Returns true if interpolation is complete */
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bool Update(FAlignedFloatBuffer& InSourceValues);
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/** Update overloaded to let you jump forward more than a single time-step */
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bool Update(uint32 StepsToJumpForward, FAlignedFloatBuffer& InSourceValues);
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/** returns const reference to the deltas buffer for doing interpolation elsewhere */
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const FAlignedFloatBuffer& GetDeltaBuffer();
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private:
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int32 BufferLength {0};
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int32 LerpLength {0};
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int32 CurrentLerpStep{0};
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FAlignedFloatBuffer DeltaBuffer;
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}; // class BufferLerper
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}
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