Collaboration diagram for fsurround_decoder::Impl:

[legend]

Public Member Functions
	Impl (unsigned blocksize=8192)

	~Impl ()

float **	getInputBuffers ()

float **	getOutputBuffers ()

void	decode (float center_width, float dimension, float adaption_rate)

void	flush ()

void	sample_rate (unsigned int srate)

void	surround_coefficients (float a, float b)

void	phase_mode (unsigned mode)

void	steering_mode (bool mode)

void	separation (float front, float rear)

Private Member Functions
void	add_output (InputBufs input1, InputBufs input2, float center_width, float dimension, float adaption_rate, bool=false)

void	block_decode (InputBufs input1, InputBufs input2, OutputBufs output, float center_width, float dimension, float adaption_rate)

void	apply_filter (cfloat signal, const float flt, float *target)
	Filter the complex source signal in the frequency domain and add it to the time domain target signal. More...

Static Private Member Functions
static cfloat	polar (float a, float p)

static float	amplitude (AVComplexFloat z)

static float	phase (AVComplexFloat z)

static float	clamp_unit_mag (float x)
	Clamp the input to the interval [-1, 1], i.e. clamp the magnitude to the unit interval [0, 1]. More...

static double	get_yfs (double ampDiff, double phaseDiff)

static double	get_xfs (double ampDiff, double yfs)

Private Attributes
size_t	m_n

size_t	m_halfN

AVTXContext *	m_fftContext {nullptr}

av_tx_fn	m_fft {nullptr}

AVTXContext *	m_ifftContext {nullptr}

av_tx_fn	m_ifft {nullptr}

AVComplexFloat *	m_dftL {nullptr}

AVComplexFloat *	m_dftR {nullptr}

AVComplexFloat *	m_src {nullptr}
	Used only in apply_filter. More...

std::vector< cfloat >	m_frontL

std::vector< cfloat >	m_frontR

std::vector< cfloat >	m_avg

std::vector< cfloat >	m_surL

std::vector< cfloat >	m_surR

std::vector< cfloat >	m_trueavg

std::vector< float >	m_xFs

std::vector< float >	m_yFs

std::vector< float >	m_wnd

std::array< std::vector< float >, 6 >	m_filter

std::array< std::vector< float >, 2 >	m_inbuf

std::array< std::vector< float >, 6 >	m_outbuf

float	m_surroundHigh {0.0F}

float	m_surroundLow {0.0F}

float	m_surroundBalance {0.0F}

float	m_surroundLevel {0.0F}

float	m_phaseOffsetL {0.0F}

float	m_phaseOffsetR {0.0F}

float	m_frontSeparation {0.0F}

float	m_rearSeparation {0.0F}

bool	m_linearSteering {false}

cfloat	m_a

cfloat	m_b

cfloat	m_c

cfloat	m_d

cfloat	m_e

cfloat	m_f

cfloat	m_g

cfloat	m_h

int	m_currentBuf

InputBufs	m_inbufs {}

OutputBufs	m_outbufs {}

Static Private Attributes
static constexpr float	kScale {1.0F}

Detailed Description

Definition at line 44 of file freesurround_decoder.cpp.

Constructor & Destructor Documentation

◆ Impl()

fsurround_decoder::Impl::Impl ( unsigned blocksize = 8192 )

inlineexplicit

Definition at line 48 of file freesurround_decoder.cpp.

◆ ~Impl()

fsurround_decoder::Impl::~Impl ( )

inline

Definition at line 91 of file freesurround_decoder.cpp.

Member Function Documentation

◆ add_output()

void fsurround_decoder::Impl::add_output	(	InputBufs	input1,
		InputBufs	input2,
		float	center_width,
		float	dimension,
		float	adaption_rate,
		bool	= `false`
	)

inlineprivate

Definition at line 197 of file freesurround_decoder.cpp.

Referenced by decode().

◆ amplitude()

static float fsurround_decoder::Impl::amplitude ( AVComplexFloat z )

inlinestaticprivate

Definition at line 190 of file freesurround_decoder.cpp.

Referenced by block_decode().

◆ apply_filter()

void fsurround_decoder::Impl::apply_filter	(	cfloat *	signal,
		const float *	flt,
		float *	target
	)

inlineprivate

Filter the complex source signal in the frequency domain and add it to the time domain target signal.

Parameters

[in]	signal	The signal, in the frequency domain, to be filtered.
[in]	flt	The filter, in the frequency domain, to be applied.
[out]	target	The signal, in the time domain, to which the filtered signal is added

Definition at line 393 of file freesurround_decoder.cpp.

Referenced by block_decode().

◆ block_decode()

void fsurround_decoder::Impl::block_decode	(	InputBufs	input1,
		InputBufs	input2,
		OutputBufs	output,
		float	center_width,
		float	dimension,
		float	adaption_rate
	)

inlineprivate

Definition at line 204 of file freesurround_decoder.cpp.

Referenced by add_output().

◆ clamp_unit_mag()

static float fsurround_decoder::Impl::clamp_unit_mag ( float x )

inlinestaticprivate

Clamp the input to the interval [-1, 1], i.e. clamp the magnitude to the unit interval [0, 1].

Definition at line 194 of file freesurround_decoder.cpp.

Referenced by block_decode().

◆ decode()

void fsurround_decoder::Impl::decode	(	float	center_width,
		float	dimension,
		float	adaption_rate
	)

inline

Definition at line 121 of file freesurround_decoder.cpp.

Referenced by fsurround_decoder::decode().

◆ flush()

void fsurround_decoder::Impl::flush ( )

inline

Definition at line 133 of file freesurround_decoder.cpp.

Referenced by fsurround_decoder::flush().

◆ get_xfs()

static double fsurround_decoder::Impl::get_xfs	(	double	ampDiff,
		double	yfs
	)

inlinestaticprivate

Definition at line 350 of file freesurround_decoder.cpp.

Referenced by block_decode().

◆ get_yfs()

static double fsurround_decoder::Impl::get_yfs	(	double	ampDiff,
		double	phaseDiff
	)

inlinestaticprivate

Definition at line 337 of file freesurround_decoder.cpp.

Referenced by block_decode().

◆ getInputBuffers()

float ** fsurround_decoder::Impl::getInputBuffers ( )

inline

Definition at line 99 of file freesurround_decoder.cpp.

Referenced by fsurround_decoder::getInputBuffers().

◆ getOutputBuffers()

float ** fsurround_decoder::Impl::getOutputBuffers ( )

inline

Definition at line 106 of file freesurround_decoder.cpp.

Referenced by fsurround_decoder::getOutputBuffers().

◆ phase()

static float fsurround_decoder::Impl::phase ( AVComplexFloat z )

inlinestaticprivate

Definition at line 191 of file freesurround_decoder.cpp.

Referenced by block_decode().

◆ phase_mode()

void fsurround_decoder::Impl::phase_mode ( unsigned mode )

inline

Definition at line 172 of file freesurround_decoder.cpp.

Referenced by Impl(), and fsurround_decoder::phase_mode().

◆ polar()

static cfloat fsurround_decoder::Impl::polar	(	float	a,
		float	p
	)

inlinestaticprivate

Definition at line 189 of file freesurround_decoder.cpp.

Referenced by block_decode().

◆ sample_rate()

void fsurround_decoder::Impl::sample_rate ( unsigned int srate )

inline

Definition at line 143 of file freesurround_decoder.cpp.

Referenced by Impl(), and fsurround_decoder::sample_rate().

◆ separation()

void fsurround_decoder::Impl::separation	(	float	front,
		float	rear
	)

inline

Definition at line 182 of file freesurround_decoder.cpp.

Referenced by Impl(), and fsurround_decoder::separation().

◆ steering_mode()

void fsurround_decoder::Impl::steering_mode ( bool mode )

inline

Definition at line 179 of file freesurround_decoder.cpp.

Referenced by Impl(), and fsurround_decoder::steering_mode().

◆ surround_coefficients()

void fsurround_decoder::Impl::surround_coefficients	(	float	a,
		float	b
	)

inline

Definition at line 155 of file freesurround_decoder.cpp.

Referenced by Impl(), and fsurround_decoder::surround_coefficients().

Member Data Documentation

◆ kScale

constexpr float fsurround_decoder::Impl::kScale {1.0F}

staticconstexprprivate

Definition at line 420 of file freesurround_decoder.cpp.

Referenced by Impl().

◆ m_a

cfloat fsurround_decoder::Impl::m_a

private

Definition at line 447 of file freesurround_decoder.cpp.

Referenced by surround_coefficients().

◆ m_avg

std::vector<cfloat> fsurround_decoder::Impl::m_avg

private

Definition at line 430 of file freesurround_decoder.cpp.

Referenced by block_decode(), and Impl().

◆ m_b

cfloat fsurround_decoder::Impl::m_b

private

Definition at line 447 of file freesurround_decoder.cpp.

Referenced by surround_coefficients().

◆ m_c

cfloat fsurround_decoder::Impl::m_c

private

Definition at line 447 of file freesurround_decoder.cpp.

Referenced by surround_coefficients().

◆ m_currentBuf

int fsurround_decoder::Impl::m_currentBuf

private

Definition at line 448 of file freesurround_decoder.cpp.

Referenced by apply_filter(), decode(), getInputBuffers(), getOutputBuffers(), and Impl().

◆ m_d

cfloat fsurround_decoder::Impl::m_d

private

Definition at line 447 of file freesurround_decoder.cpp.

Referenced by surround_coefficients().

◆ m_dftL

AVComplexFloat* fsurround_decoder::Impl::m_dftL {nullptr}

private

Definition at line 426 of file freesurround_decoder.cpp.

Referenced by block_decode(), and ~Impl().

◆ m_dftR

AVComplexFloat* fsurround_decoder::Impl::m_dftR {nullptr}

private

Definition at line 427 of file freesurround_decoder.cpp.

Referenced by block_decode(), and ~Impl().

◆ m_e

cfloat fsurround_decoder::Impl::m_e

private

Definition at line 447 of file freesurround_decoder.cpp.

Referenced by surround_coefficients().

◆ m_f

cfloat fsurround_decoder::Impl::m_f

private

Definition at line 447 of file freesurround_decoder.cpp.

Referenced by surround_coefficients().

◆ m_fft

av_tx_fn fsurround_decoder::Impl::m_fft {nullptr}

private

Definition at line 422 of file freesurround_decoder.cpp.

Referenced by block_decode(), and Impl().

◆ m_fftContext

AVTXContext* fsurround_decoder::Impl::m_fftContext {nullptr}

private

Definition at line 421 of file freesurround_decoder.cpp.

Referenced by block_decode(), Impl(), and ~Impl().

◆ m_filter

std::array<std::vector<float>,6> fsurround_decoder::Impl::m_filter

private

Definition at line 434 of file freesurround_decoder.cpp.

Referenced by block_decode(), Impl(), and sample_rate().

◆ m_frontL

std::vector<cfloat> fsurround_decoder::Impl::m_frontL

private

Definition at line 430 of file freesurround_decoder.cpp.

Referenced by block_decode(), and Impl().

◆ m_frontR

std::vector<cfloat> fsurround_decoder::Impl::m_frontR

private

Definition at line 430 of file freesurround_decoder.cpp.

Referenced by block_decode(), and Impl().

◆ m_frontSeparation

float fsurround_decoder::Impl::m_frontSeparation {0.0F}

private

Definition at line 444 of file freesurround_decoder.cpp.

Referenced by block_decode(), and separation().

◆ m_g

cfloat fsurround_decoder::Impl::m_g

private

Definition at line 447 of file freesurround_decoder.cpp.

Referenced by surround_coefficients().

◆ m_h

cfloat fsurround_decoder::Impl::m_h

private

Definition at line 447 of file freesurround_decoder.cpp.

Referenced by surround_coefficients().

◆ m_halfN

size_t fsurround_decoder::Impl::m_halfN

private

Definition at line 419 of file freesurround_decoder.cpp.

Referenced by apply_filter(), block_decode(), decode(), getInputBuffers(), getOutputBuffers(), and sample_rate().

◆ m_ifft

av_tx_fn fsurround_decoder::Impl::m_ifft {nullptr}

private

Definition at line 424 of file freesurround_decoder.cpp.

Referenced by apply_filter(), and Impl().

◆ m_ifftContext

AVTXContext* fsurround_decoder::Impl::m_ifftContext {nullptr}

private

Definition at line 423 of file freesurround_decoder.cpp.

Referenced by apply_filter(), Impl(), and ~Impl().

◆ m_inbuf

std::array<std::vector<float>,2> fsurround_decoder::Impl::m_inbuf

private

Definition at line 435 of file freesurround_decoder.cpp.

Referenced by decode(), flush(), getInputBuffers(), and Impl().

◆ m_inbufs

InputBufs fsurround_decoder::Impl::m_inbufs {}

private

Definition at line 449 of file freesurround_decoder.cpp.

Referenced by getInputBuffers(), and Impl().

◆ m_linearSteering

bool fsurround_decoder::Impl::m_linearSteering {false}

private

Definition at line 446 of file freesurround_decoder.cpp.

Referenced by block_decode(), and steering_mode().

◆ m_n

size_t fsurround_decoder::Impl::m_n

private

Definition at line 418 of file freesurround_decoder.cpp.

Referenced by apply_filter(), flush(), Impl(), and sample_rate().

◆ m_outbuf

std::array<std::vector<float>,6> fsurround_decoder::Impl::m_outbuf

private

Definition at line 436 of file freesurround_decoder.cpp.

Referenced by add_output(), flush(), getOutputBuffers(), and Impl().

◆ m_outbufs

OutputBufs fsurround_decoder::Impl::m_outbufs {}

private

Definition at line 450 of file freesurround_decoder.cpp.

Referenced by getOutputBuffers(), and Impl().

◆ m_phaseOffsetL

float fsurround_decoder::Impl::m_phaseOffsetL {0.0F}

private

Definition at line 442 of file freesurround_decoder.cpp.

Referenced by block_decode(), and phase_mode().

◆ m_phaseOffsetR

float fsurround_decoder::Impl::m_phaseOffsetR {0.0F}

private

Definition at line 443 of file freesurround_decoder.cpp.

Referenced by block_decode(), and phase_mode().

◆ m_rearSeparation

float fsurround_decoder::Impl::m_rearSeparation {0.0F}

private

Definition at line 445 of file freesurround_decoder.cpp.

Referenced by block_decode(), and separation().

◆ m_src

AVComplexFloat* fsurround_decoder::Impl::m_src {nullptr}

private

Used only in apply_filter.

Definition at line 428 of file freesurround_decoder.cpp.

Referenced by apply_filter(), and ~Impl().

◆ m_surL

std::vector<cfloat> fsurround_decoder::Impl::m_surL

private

Definition at line 430 of file freesurround_decoder.cpp.

Referenced by block_decode(), and Impl().

◆ m_surR

std::vector<cfloat> fsurround_decoder::Impl::m_surR

private

Definition at line 430 of file freesurround_decoder.cpp.

Referenced by block_decode(), and Impl().

◆ m_surroundBalance

float fsurround_decoder::Impl::m_surroundBalance {0.0F}

private

Definition at line 440 of file freesurround_decoder.cpp.

Referenced by block_decode(), and surround_coefficients().

◆ m_surroundHigh

float fsurround_decoder::Impl::m_surroundHigh {0.0F}

private

Definition at line 438 of file freesurround_decoder.cpp.

Referenced by surround_coefficients().

◆ m_surroundLevel

float fsurround_decoder::Impl::m_surroundLevel {0.0F}

private

Definition at line 441 of file freesurround_decoder.cpp.

Referenced by block_decode(), and surround_coefficients().

◆ m_surroundLow

float fsurround_decoder::Impl::m_surroundLow {0.0F}

private

Definition at line 439 of file freesurround_decoder.cpp.

Referenced by surround_coefficients().

◆ m_trueavg

std::vector<cfloat> fsurround_decoder::Impl::m_trueavg

private

Definition at line 431 of file freesurround_decoder.cpp.

Referenced by block_decode(), and Impl().

◆ m_wnd

std::vector<float> fsurround_decoder::Impl::m_wnd

private

Definition at line 433 of file freesurround_decoder.cpp.

Referenced by apply_filter(), block_decode(), and Impl().

◆ m_xFs

std::vector<float> fsurround_decoder::Impl::m_xFs

private

Definition at line 432 of file freesurround_decoder.cpp.

Referenced by block_decode(), and Impl().

◆ m_yFs

std::vector<float> fsurround_decoder::Impl::m_yFs

private

Definition at line 432 of file freesurround_decoder.cpp.

Referenced by block_decode(), and Impl().

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

mythtv/libs/libmyth/audio/freesurround_decoder.cpp

Public Member Functions

Private Member Functions

Static Private Member Functions

Private Attributes

Static Private Attributes

Detailed Description

Constructor & Destructor Documentation

◆ Impl()

◆ ~Impl()

Member Function Documentation

◆ add_output()

◆ amplitude()

◆ apply_filter()

◆ block_decode()

◆ clamp_unit_mag()

◆ decode()

◆ flush()

◆ get_xfs()

◆ get_yfs()

◆ getInputBuffers()

◆ getOutputBuffers()

◆ phase()

◆ phase_mode()

◆ polar()

◆ sample_rate()

◆ separation()

◆ steering_mode()

◆ surround_coefficients()

Member Data Documentation

◆ kScale

◆ m_a

◆ m_avg

◆ m_b

◆ m_c

◆ m_currentBuf

◆ m_d

◆ m_dftL

◆ m_dftR

◆ m_e

◆ m_f

◆ m_fft

◆ m_fftContext

◆ m_filter

◆ m_frontL

◆ m_frontR

◆ m_frontSeparation

◆ m_g

◆ m_h

◆ m_halfN

◆ m_ifft

◆ m_ifftContext

◆ m_inbuf

◆ m_inbufs

◆ m_linearSteering

◆ m_n

◆ m_outbuf

◆ m_outbufs

◆ m_phaseOffsetL

◆ m_phaseOffsetR

◆ m_rearSeparation

◆ m_src

◆ m_surL

◆ m_surR

◆ m_surroundBalance

◆ m_surroundHigh

◆ m_surroundLevel

◆ m_surroundLow

◆ m_trueavg

◆ m_wnd

◆ m_xFs

◆ m_yFs