DCAXllChSet Struct Reference

#include <dca_xll.h>

Data Fields
int	nchannels
	Number of channels in the channel set (N)
int	residual_encode
	Residual encoding mask (0 - residual, 1 - full channel)
int	pcm_bit_res
	PCM bit resolution (variable)
int	storage_bit_res
	Storage bit resolution (16 or 24)
int	freq
	Original sampling frequency (max. 96000 Hz)
int	primary_chset
	Primary channel set flag.
int	dmix_coeffs_present
	Downmix coefficients present in stream.
int	dmix_embedded
	Downmix already performed by encoder.
int	dmix_type
	Primary channel set downmix type.
int	hier_chset
	Whether the channel set is part of a hierarchy.
int	hier_ofs
	Number of preceding channels in a hierarchy (M)
int	dmix_coeff [DCA_XLL_DMIX_COEFFS_MAX]
	Downmixing coefficients.
int	dmix_scale [DCA_XLL_DMIX_SCALES_MAX]
	Downmixing scales.
int	dmix_scale_inv [DCA_XLL_DMIX_SCALES_MAX]
	Inverse downmixing scales.
int	ch_mask
	Channel mask for set.
int	ch_remap [DCA_XLL_CHANNELS_MAX]
	Channel to speaker map.
int	nfreqbands
	Number of frequency bands (1 or 2)
int	nabits
	Number of bits to read bit allocation coding parameter.
DCAXllBand	bands [DCA_XLL_BANDS_MAX]
	Frequency bands.
int	seg_common
	Segment type.
int	rice_code_flag [DCA_XLL_CHANNELS_MAX]
	Rice coding flag.
int	bitalloc_hybrid_linear [DCA_XLL_CHANNELS_MAX]
	Binary code length for isolated samples.
int	bitalloc_part_a [DCA_XLL_CHANNELS_MAX]
	Coding parameter for part A of segment.
int	bitalloc_part_b [DCA_XLL_CHANNELS_MAX]
	Coding parameter for part B of segment.
int	nsamples_part_a [DCA_XLL_CHANNELS_MAX]
	Number of samples in part A of segment.
int32_t	deci_history [DCA_XLL_CHANNELS_MAX][DCA_XLL_DECI_HISTORY_MAX]
	Decimator history for frequency band 1.
unsigned int	sample_size [DCA_XLL_SAMPLE_BUFFERS_MAX]
int32_t *	sample_buffer [DCA_XLL_SAMPLE_BUFFERS_MAX]

Detailed Description

Definition at line 62 of file dca_xll.h.

Field Documentation

nchannels

int DCAXllChSet::nchannels

Number of channels in the channel set (N)

Definition at line 64 of file dca_xll.h.

Referenced by undo_down_mix().

residual_encode

int DCAXllChSet::residual_encode

Residual encoding mask (0 - residual, 1 - full channel)

Definition at line 65 of file dca_xll.h.

pcm_bit_res

int DCAXllChSet::pcm_bit_res

PCM bit resolution (variable)

Definition at line 66 of file dca_xll.h.

storage_bit_res

int DCAXllChSet::storage_bit_res

Storage bit resolution (16 or 24)

Definition at line 67 of file dca_xll.h.

freq

int DCAXllChSet::freq

Original sampling frequency (max. 96000 Hz)

Definition at line 68 of file dca_xll.h.

primary_chset

int DCAXllChSet::primary_chset

Primary channel set flag.

Definition at line 70 of file dca_xll.h.

dmix_coeffs_present

int DCAXllChSet::dmix_coeffs_present

Downmix coefficients present in stream.

Definition at line 71 of file dca_xll.h.

dmix_embedded

int DCAXllChSet::dmix_embedded

Downmix already performed by encoder.

Definition at line 72 of file dca_xll.h.

dmix_type

int DCAXllChSet::dmix_type

Primary channel set downmix type.

Definition at line 73 of file dca_xll.h.

hier_chset

int DCAXllChSet::hier_chset

Whether the channel set is part of a hierarchy.

Definition at line 74 of file dca_xll.h.

hier_ofs

int DCAXllChSet::hier_ofs

Number of preceding channels in a hierarchy (M)

Definition at line 75 of file dca_xll.h.

Referenced by scale_down_mix(), and undo_down_mix().

dmix_coeff

int DCAXllChSet::dmix_coeff[DCA_XLL_DMIX_COEFFS_MAX]

Downmixing coefficients.

Definition at line 76 of file dca_xll.h.

Referenced by undo_down_mix().

dmix_scale

int DCAXllChSet::dmix_scale[DCA_XLL_DMIX_SCALES_MAX]

Downmixing scales.

Definition at line 77 of file dca_xll.h.

Referenced by prescale_down_mix(), and scale_down_mix().

dmix_scale_inv

int DCAXllChSet::dmix_scale_inv[DCA_XLL_DMIX_SCALES_MAX]

Inverse downmixing scales.

Definition at line 78 of file dca_xll.h.

Referenced by combine_residual_frame(), and prescale_down_mix().

ch_mask

int DCAXllChSet::ch_mask

Channel mask for set.

Definition at line 79 of file dca_xll.h.

ch_remap

int DCAXllChSet::ch_remap[DCA_XLL_CHANNELS_MAX]

Channel to speaker map.

Definition at line 80 of file dca_xll.h.

nfreqbands

int DCAXllChSet::nfreqbands

Number of frequency bands (1 or 2)

Definition at line 82 of file dca_xll.h.

nabits

int DCAXllChSet::nabits

Number of bits to read bit allocation coding parameter.

Definition at line 83 of file dca_xll.h.

bands

DCAXllBand DCAXllChSet::bands[DCA_XLL_BANDS_MAX]

Frequency bands.

Definition at line 85 of file dca_xll.h.

Referenced by undo_down_mix().

seg_common

int DCAXllChSet::seg_common

Segment type.

Definition at line 88 of file dca_xll.h.

rice_code_flag

int DCAXllChSet::rice_code_flag[DCA_XLL_CHANNELS_MAX]

Rice coding flag.

Definition at line 89 of file dca_xll.h.

bitalloc_hybrid_linear

int DCAXllChSet::bitalloc_hybrid_linear[DCA_XLL_CHANNELS_MAX]

Binary code length for isolated samples.

Definition at line 90 of file dca_xll.h.

bitalloc_part_a

int DCAXllChSet::bitalloc_part_a[DCA_XLL_CHANNELS_MAX]

Coding parameter for part A of segment.

Definition at line 91 of file dca_xll.h.

bitalloc_part_b

int DCAXllChSet::bitalloc_part_b[DCA_XLL_CHANNELS_MAX]

Coding parameter for part B of segment.

Definition at line 92 of file dca_xll.h.

nsamples_part_a

int DCAXllChSet::nsamples_part_a[DCA_XLL_CHANNELS_MAX]

Number of samples in part A of segment.

Definition at line 93 of file dca_xll.h.

deci_history

int32_t DCAXllChSet::deci_history[DCA_XLL_CHANNELS_MAX][DCA_XLL_DECI_HISTORY_MAX]

Decimator history for frequency band 1.

Definition at line 96 of file dca_xll.h.

Referenced by undo_down_mix().

sample_size

unsigned int DCAXllChSet::sample_size[DCA_XLL_SAMPLE_BUFFERS_MAX]

Definition at line 99 of file dca_xll.h.

sample_buffer

int32_t* DCAXllChSet::sample_buffer[DCA_XLL_SAMPLE_BUFFERS_MAX]

Definition at line 100 of file dca_xll.h.

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

• libavcodec/dca_xll.h