Audio convert helpers

Helpers to convert audio. More...

Functions
void	impact_AudioConvertFrom (const uint8_t *payload, float *output, size_t nSpl, enum impact_SampleFormat fmt)
void	impact_AudioConvertTo (const float *input, uint8_t *payload, size_t nSpl, enum impact_SampleFormat fmt)
void	impact_StereoToMono (const float *input, float *output, size_t nFrame)
void	impact_MonoToStereo (const float *input, float *output, size_t nFrame)
void	impact_StereoToMono_Planar (const float *inputL, const float *inputR, float *output, size_t nFrame)
void	impact_MonoToStereo_Planar (const float *input, float *outputL, float *outputR, size_t nFrame)
void	impact_AudioMonoFromLiveStereo (const uint8_t *payload, float *output)
void	impact_AudioMonoToLiveStereo (const float *input, uint8_t *payload)

Detailed Description

Helpers to convert audio in an optimized way

Function Documentation

impact_AudioConvertFrom()

void impact_AudioConvertFrom	(	const uint8_t *	payload,
		float *	output,
		size_t	nSpl,
		enum impact_SampleFormat	fmt
	)

Convert the payload to floating-point array

Warning

Output buffer must be 64-byte aligned

Parameters

payload	the binary raw audio buffer
output	audio output buffer (64 byte aligned)
nSpl	the number of samples (not frames)
fmt	the format of the payload

impact_AudioConvertTo()

void impact_AudioConvertTo	(	const float *	input,
		uint8_t *	payload,
		size_t	nSpl,
		enum impact_SampleFormat	fmt
	)

Convert floating-point array to payload

Warning

Input buffer must be 64-byte aligned

Parameters

input	audio input buffer (64 byte aligned)
payload	the binary raw audio buffer
nSpl	the number of samples (not frames)
fmt	the format of the payload

impact_AudioMonoFromLiveStereo()

void impact_AudioMonoFromLiveStereo	(	const uint8_t *	payload,
		float *	output
	)

Convert Livewire Livestereo payload to floating-point Mono (12 samples)

Parameters

payload	Livewire Live Stereo raw buffer
output	audio output mono buffer (64 byte aligned)

impact_AudioMonoToLiveStereo()

void impact_AudioMonoToLiveStereo	(	const float *	input,
		uint8_t *	payload
	)

Convert floating-point Mono (12 samples) to Livewire Livestereo payload

Parameters

input	audio input mono buffer (64 byte aligned)
payload	Livewire Live Stereo raw buffer

impact_MonoToStereo()

void impact_MonoToStereo	(	const float *	input,
		float *	output,
		size_t	nFrame
	)

Convert floating-point Mono to Stereo (L,L)

Warning

Buffers must be 64-byte aligned

Parameters

input	audio input mono buffer (64 byte aligned)
output	audio output stereo buffer (64 byte aligned)
nFrame	the number of frames

impact_MonoToStereo_Planar()

void impact_MonoToStereo_Planar	(	const float *	input,
		float *	outputL,
		float *	outputR,
		size_t	nFrame
	)

Convert floating-point Mono to Stereo (planar) (L,L)

Warning

Buffers must be 64-byte aligned

Parameters

input	audio input mono buffer (64 byte aligned)
outputL	audio output left buffer (64 byte aligned)
outputR	audio output right buffer (64 byte aligned)
nFrame	the number of frames

impact_StereoToMono()

void impact_StereoToMono	(	const float *	input,
		float *	output,
		size_t	nFrame
	)

Convert floating-point Stereo to Mono (L+R)/2

Warning

Buffers must be 64-byte aligned

Parameters

input	audio input stereo buffer (64 byte aligned)
output	audio output mono buffer (64 byte aligned)
nFrame	the number of frames

impact_StereoToMono_Planar()

void impact_StereoToMono_Planar	(	const float *	inputL,
		const float *	inputR,
		float *	output,
		size_t	nFrame
	)

Convert floating-point Stereo (planar) to Mono (L+R)/2

Warning

Buffers must be 64-byte aligned

Parameters

inputL	audio input left buffer (64 byte aligned)
inputR	audio input right buffer (64 byte aligned)
output	audio output mono buffer (64 byte aligned)
nFrame	the number of frames