#include <analyser.h>

Inheritance diagram for AudioGrapher::Analyser:

Public Member Functions
	Analyser (float sample_rate, unsigned int channels, samplecnt_t bufsize, samplecnt_t n_samples, size_t width=800, size_t bins=200)

	~Analyser ()

void	process (ProcessContext< float > const &c)

ARDOUR::ExportAnalysisPtr	result (bool ptr=false)

void	set_duration (samplecnt_t n_samples)

void	set_normalization_gain (float gain)

Public Member Functions inherited from AudioGrapher::LoudnessReader
	LoudnessReader (float sample_rate, unsigned int channels, samplecnt_t bufsize)

	~LoudnessReader ()

void	reset ()

float	calc_peak (float target_lufs=-23, float target_dbtp=-1) const

bool	get_loudness (float integrated, float short_term=NULL, float *momentary=NULL) const

Public Member Functions inherited from AudioGrapher::ListedSource< float >
void	add_output (typename Source< float >::SinkPtr output)

void	clear_outputs ()
	Removes all outputs added. More...

void	remove_output (typename Source< float >::SinkPtr output)

Public Member Functions inherited from AudioGrapher::Source< T >
virtual	~Source ()

virtual void	add_output (SinkPtr output)=0
	Adds an output to this source. All data generated is forwarded to output. More...

virtual void	remove_output (SinkPtr output)=0
	Removes a specific output from this source. More...

Public Member Functions inherited from AudioGrapher::Sink< float >
virtual	~Sink ()

virtual void	process (ProcessContext< float > &context)

Static Public Attributes
static const float	fft_range_db

Private Member Functions
float	fft_power_at_bin (const uint32_t b, const float norm) const

Private Attributes
ARDOUR::ExportAnalysisPtr	_rp

ARDOUR::ExportAnalysis &	_result

samplecnt_t	_n_samples

samplecnt_t	_pos

samplecnt_t	_spp

samplecnt_t	_fpp

float *	_hann_window

uint32_t	_fft_data_size

double	_fft_freq_per_bin

float *	_fft_data_in

float *	_fft_data_out

float *	_fft_power

fftwf_plan	_fft_plan

Additional Inherited Members
Public Types inherited from AudioGrapher::Source< T >
typedef std::shared_ptr< Sink< T > >	SinkPtr

Protected Types inherited from AudioGrapher::ListedSource< float >
typedef std::list< typename Source< float >::SinkPtr >	SinkList

Protected Member Functions inherited from AudioGrapher::ListedSource< float >
void	output (ProcessContext< float > const &c)
	Helper for derived classes. More...

void	output (ProcessContext< float > &c)

bool	output_size_is_one ()

Protected Attributes inherited from AudioGrapher::LoudnessReader
Vamp::Plugin *	_ebur_plugin

std::vector< Vamp::Plugin * >	_dbtp_plugins

float	_sample_rate

unsigned int	_channels

samplecnt_t	_bufsize

samplecnt_t	_pos

float *	_bufs [2]

Protected Attributes inherited from AudioGrapher::ListedSource< float >
SinkList	outputs

Detailed Description

Definition at line 29 of file audiographer/audiographer/general/analyser.h.

Constructor & Destructor Documentation

◆ Analyser()

AudioGrapher::Analyser::Analyser	(	float	sample_rate,
		unsigned int	channels,
		samplecnt_t	bufsize,
		samplecnt_t	n_samples,
		size_t	width = `800`,
		size_t	bins = `200`
	)

◆ ~Analyser()

AudioGrapher::Analyser::~Analyser ( )

Member Function Documentation

◆ fft_power_at_bin()

float AudioGrapher::Analyser::fft_power_at_bin	(	const uint32_t	b,
		const float	norm
	)		const

private

◆ process()

void AudioGrapher::Analyser::process ( ProcessContext< float > const & context )

virtual

Process given data. The data can not be modified, so in-place processing is not allowed. At least this function must be implemented by deriving classes

Reimplemented from AudioGrapher::LoudnessReader.