Public Attributes
double *	audio_data
	Filtered audio data (used as ring buffer). More...

size_t	audio_data_frames
	Size of audio_data array. More...

size_t	audio_data_index
	Current index for audio_data. More...

unsigned long	needed_frames
	How many frames are needed for a gating block. More...

int *	channel_map
	The channel map. More...

unsigned long	samples_in_100ms
	How many samples fit in 100ms (rounded). More...

double	b [5]
	BS.1770 filter coefficients (nominator). More...

double	a [5]
	BS.1770 filter coefficients (denominator). More...

double	v [5][5]
	BS.1770 filter state. More...

unsigned long *	block_energy_histogram
	Histograms, used to calculate LRA. More...

unsigned long *	short_term_block_energy_histogram

size_t	short_term_frame_counter
	Keeps track of when a new short term block is needed. More...

double *	sample_peak
	Maximum sample peak, one per channel.

unsigned long	window
	The maximum window duration in ms. More...

void **	data_ptrs
	Data pointer array for interleaved data.

Member Data Documentation

§ a

double FFEBUR128StateInternal::a[5]

BS.1770 filter coefficients (denominator).

§ audio_data

double* FFEBUR128StateInternal::audio_data

Filtered audio data (used as ring buffer).

§ audio_data_frames

size_t FFEBUR128StateInternal::audio_data_frames

Size of audio_data array.

§ audio_data_index

size_t FFEBUR128StateInternal::audio_data_index

Current index for audio_data.

§ b

double FFEBUR128StateInternal::b[5]

BS.1770 filter coefficients (nominator).

§ block_energy_histogram

unsigned long* FFEBUR128StateInternal::block_energy_histogram

Histograms, used to calculate LRA.

§ channel_map

int* FFEBUR128StateInternal::channel_map

The channel map.

Has as many elements as there are channels.

§ needed_frames

unsigned long FFEBUR128StateInternal::needed_frames

How many frames are needed for a gating block.

Will correspond to 400ms of audio at initialization, and 100ms after the first block (75% overlap as specified in the 2011 revision of BS1770).

§ samples_in_100ms

unsigned long FFEBUR128StateInternal::samples_in_100ms

How many samples fit in 100ms (rounded).

§ short_term_frame_counter

size_t FFEBUR128StateInternal::short_term_frame_counter

Keeps track of when a new short term block is needed.

§ v

double FFEBUR128StateInternal::v[5][5]

BS.1770 filter state.

§ window

unsigned long FFEBUR128StateInternal::window

The maximum window duration in ms.

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

libavfilter/ebur128.c

Public Attributes