FFmpeg: DCAXllDecoder Struct Reference

FFmpeg 4.0

#include <libavcodec/dca_xll.h>

Data Fields
AVCodecContext *	avctx

GetBitContext	gb

int	frame_size
	Number of bytes in a lossless frame. More...

int	nchsets
	Number of channels sets per frame. More...

int	nframesegs
	Number of segments per frame. More...

int	nsegsamples_log2
	log2(nsegsamples) More...

int	nsegsamples
	Samples in segment per one frequency band. More...

int	nframesamples_log2
	log2(nframesamples) More...

int	nframesamples
	Samples in frame per one frequency band. More...

int	seg_size_nbits
	Number of bits used to read segment size. More...

int	band_crc_present
	Presence of CRC16 within each frequency band. More...

int	scalable_lsbs
	MSB/LSB split flag. More...

int	ch_mask_nbits
	Number of bits used to read channel mask. More...

int	fixed_lsb_width
	Fixed LSB width. More...

DCAXllChSet	chset [DCA_XLL_CHSETS_MAX]
	Channel sets. More...

int *	navi
	NAVI table. More...

unsigned int	navi_size

int	nfreqbands
	Highest number of frequency bands. More...

int	nchannels
	Total number of channels in a hierarchy. More...

int	nreschsets
	Number of channel sets that have residual encoded channels. More...

int	nactivechsets
	Number of active channel sets to decode. More...

int	hd_stream_id
	Previous DTS-HD stream ID for detecting changes. More...

uint8_t *	pbr_buffer
	Peak bit rate (PBR) smoothing buffer. More...

int	pbr_length
	Length in bytes of data currently buffered. More...

int	pbr_delay
	Delay in frames before decoding buffered data. More...

DCADSPContext *	dcadsp

int	output_mask

int32_t *	output_samples [DCA_SPEAKER_COUNT]

Detailed Description

Definition at line 105 of file dca_xll.h.

Field Documentation

◆ avctx

AVCodecContext* DCAXllDecoder::avctx

Definition at line 106 of file dca_xll.h.

Referenced by chs_parse_band_data(), chs_parse_header(), combine_residual_frame(), dcadec_init(), ff_dca_xll_filter_frame(), force_lossy_output(), parse_band_data(), parse_common_header(), parse_dmix_coeffs(), parse_frame(), parse_navi_table(), and parse_sub_headers().

◆ gb

GetBitContext DCAXllDecoder::gb

Definition at line 107 of file dca_xll.h.

Referenced by chs_parse_band_data(), chs_parse_header(), parse_band_data(), parse_common_header(), parse_dmix_coeffs(), parse_frame(), and parse_navi_table().

◆ frame_size

int DCAXllDecoder::frame_size

Number of bytes in a lossless frame.

Definition at line 109 of file dca_xll.h.

Referenced by chs_parse_header(), parse_common_header(), parse_frame(), parse_frame_no_pbr(), parse_frame_pbr(), and parse_navi_table().

◆ nchsets

int DCAXllDecoder::nchsets

Number of channels sets per frame.

Definition at line 110 of file dca_xll.h.

Referenced by chs_parse_header(), dcadec_decode_frame(), find_next_hier_dmix_chset(), parse_common_header(), parse_navi_table(), and parse_sub_headers().

◆ nframesegs

int DCAXllDecoder::nframesegs

Number of segments per frame.

Definition at line 111 of file dca_xll.h.

Referenced by parse_band_data(), parse_common_header(), and parse_navi_table().

◆ nsegsamples_log2

int DCAXllDecoder::nsegsamples_log2

log2(nsegsamples)

Definition at line 112 of file dca_xll.h.

Referenced by chs_parse_band_data(), and parse_common_header().

◆ nsegsamples

int DCAXllDecoder::nsegsamples

Samples in segment per one frequency band.

Definition at line 113 of file dca_xll.h.

Referenced by chs_clear_band_data(), chs_parse_band_data(), chs_parse_header(), and parse_common_header().

◆ nframesamples_log2

int DCAXllDecoder::nframesamples_log2

log2(nframesamples)

Definition at line 114 of file dca_xll.h.

Referenced by parse_common_header().

◆ nframesamples

int DCAXllDecoder::nframesamples

Samples in frame per one frequency band.

Definition at line 115 of file dca_xll.h.

Referenced by chs_alloc_lsb_band_data(), chs_alloc_msb_band_data(), chs_assemble_freq_bands(), chs_assemble_msbs_lsbs(), chs_clear_band_data(), chs_filter_band_data(), combine_residual_frame(), ff_dca_xll_filter_frame(), parse_common_header(), scale_down_mix(), and undo_down_mix().

◆ seg_size_nbits

int DCAXllDecoder::seg_size_nbits

Number of bits used to read segment size.

Definition at line 116 of file dca_xll.h.

Referenced by chs_parse_header(), parse_common_header(), and parse_navi_table().

◆ band_crc_present

int DCAXllDecoder::band_crc_present

Presence of CRC16 within each frequency band.

Definition at line 117 of file dca_xll.h.

Referenced by chs_parse_header(), and parse_common_header().

◆ scalable_lsbs

int DCAXllDecoder::scalable_lsbs

MSB/LSB split flag.

Definition at line 118 of file dca_xll.h.

Referenced by chs_parse_header(), ff_dca_xll_filter_frame(), and parse_common_header().

◆ ch_mask_nbits

int DCAXllDecoder::ch_mask_nbits

Number of bits used to read channel mask.

Definition at line 119 of file dca_xll.h.

Referenced by chs_parse_header(), and parse_common_header().

◆ fixed_lsb_width

int DCAXllDecoder::fixed_lsb_width

Fixed LSB width.

Definition at line 120 of file dca_xll.h.

Referenced by chs_get_lsb_width(), ff_dca_xll_filter_frame(), and parse_common_header().

◆ chset

DCAXllChSet DCAXllDecoder::chset[DCA_XLL_CHSETS_MAX]

Definition at line 122 of file dca_xll.h.

Referenced by chs_parse_header(), dcadec_decode_frame(), ff_dca_xll_close(), ff_dca_xll_filter_frame(), parse_band_data(), parse_navi_table(), parse_sub_headers(), scale_down_mix(), and undo_down_mix().

◆ navi

int* DCAXllDecoder::navi

NAVI table.

Definition at line 124 of file dca_xll.h.

Referenced by ff_dca_xll_close(), parse_band_data(), and parse_navi_table().

◆ navi_size

unsigned int DCAXllDecoder::navi_size

Definition at line 125 of file dca_xll.h.

Referenced by ff_dca_xll_close(), and parse_navi_table().

◆ nfreqbands

int DCAXllDecoder::nfreqbands

Highest number of frequency bands.

Definition at line 127 of file dca_xll.h.

Referenced by ff_dca_xll_filter_frame(), parse_band_data(), parse_navi_table(), and parse_sub_headers().

◆ nchannels

int DCAXllDecoder::nchannels

Total number of channels in a hierarchy.

Definition at line 128 of file dca_xll.h.

Referenced by parse_sub_headers().

◆ nreschsets

int DCAXllDecoder::nreschsets

Number of channel sets that have residual encoded channels.

Definition at line 129 of file dca_xll.h.

Referenced by dcadec_decode_frame(), and parse_sub_headers().

◆ nactivechsets

int DCAXllDecoder::nactivechsets

Number of active channel sets to decode.

Definition at line 130 of file dca_xll.h.

Referenced by ff_dca_xll_filter_frame(), and parse_sub_headers().

◆ hd_stream_id

int DCAXllDecoder::hd_stream_id

Previous DTS-HD stream ID for detecting changes.

Definition at line 132 of file dca_xll.h.

Referenced by ff_dca_xll_parse().

◆ pbr_buffer

uint8_t* DCAXllDecoder::pbr_buffer

Peak bit rate (PBR) smoothing buffer.

Definition at line 134 of file dca_xll.h.

Referenced by copy_to_pbr(), ff_dca_xll_close(), and parse_frame_pbr().

◆ pbr_length

int DCAXllDecoder::pbr_length

Length in bytes of data currently buffered.

Definition at line 135 of file dca_xll.h.

Referenced by clear_pbr(), copy_to_pbr(), ff_dca_xll_parse(), and parse_frame_pbr().

◆ pbr_delay

int DCAXllDecoder::pbr_delay

Delay in frames before decoding buffered data.

Definition at line 136 of file dca_xll.h.

Referenced by clear_pbr(), copy_to_pbr(), and parse_frame_pbr().

◆ dcadsp

DCADSPContext* DCAXllDecoder::dcadsp

Definition at line 138 of file dca_xll.h.

Referenced by chs_assemble_freq_bands(), chs_filter_band_data(), dcadec_init(), ff_dca_xll_filter_frame(), scale_down_mix(), and undo_down_mix().

◆ output_mask

int DCAXllDecoder::output_mask

Definition at line 140 of file dca_xll.h.

Referenced by ff_dca_xll_filter_frame().

◆ output_samples

int32_t* DCAXllDecoder::output_samples[DCA_SPEAKER_COUNT]

Definition at line 141 of file dca_xll.h.

Referenced by chs_assemble_freq_bands(), chs_filter_band_data(), and ff_dca_xll_filter_frame().

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

libavcodec/dca_xll.h