#include <libavcodec/dca_core.h>

Data Fields
AVCodecContext *	avctx

GetBitContext	gb

GetBitContext	gb_in

int	crc_present
	CRC present flag. More...

int	npcmblocks
	Number of PCM sample blocks. More...

int	frame_size
	Primary frame byte size. More...

int	audio_mode
	Audio channel arrangement. More...

int	sample_rate
	Core audio sampling frequency. More...

int	bit_rate
	Transmission bit rate. More...

int	drc_present
	Embedded dynamic range flag. More...

int	ts_present
	Embedded time stamp flag. More...

int	aux_present
	Auxiliary data flag. More...

int	ext_audio_type
	Extension audio descriptor flag. More...

int	ext_audio_present
	Extended coding flag. More...

int	sync_ssf
	Audio sync word insertion flag. More...

int	lfe_present
	Low frequency effects flag. More...

int	predictor_history
	Predictor history flag switch. More...

int	filter_perfect
	Multirate interpolator switch. More...

int	source_pcm_res
	Source PCM resolution. More...

int	es_format
	Extended surround (ES) mastering flag. More...

int	sumdiff_front
	Front sum/difference flag. More...

int	sumdiff_surround
	Surround sum/difference flag. More...

int	nsubframes
	Number of subframes. More...

int	nchannels
	Number of primary audio channels (incl. extension channels) More...

int	ch_mask
	Speaker layout mask (incl. LFE and extension channels) More...

int8_t	nsubbands [DCA_CHANNELS]
	Subband activity count. More...

int8_t	subband_vq_start [DCA_CHANNELS]
	High frequency VQ start subband. More...

int8_t	joint_intensity_index [DCA_CHANNELS]
	Joint intensity coding index. More...

int8_t	transition_mode_sel [DCA_CHANNELS]
	Transient mode code book. More...

int8_t	scale_factor_sel [DCA_CHANNELS]
	Scale factor code book. More...

int8_t	bit_allocation_sel [DCA_CHANNELS]
	Bit allocation quantizer select. More...

int8_t	quant_index_sel [DCA_CHANNELS][DCA_CODE_BOOKS]
	Quantization index codebook select. More...

int32_t	scale_factor_adj [DCA_CHANNELS][DCA_CODE_BOOKS]
	Scale factor adjustment. More...

int8_t	nsubsubframes [DCA_SUBFRAMES]
	Subsubframe count for each subframe. More...

int8_t	prediction_mode [DCA_CHANNELS][DCA_SUBBANDS_X96]
	Prediction mode. More...

int16_t	prediction_vq_index [DCA_CHANNELS][DCA_SUBBANDS_X96]
	Prediction coefficients VQ address. More...

int8_t	bit_allocation [DCA_CHANNELS][DCA_SUBBANDS_X96]
	Bit allocation index. More...

int8_t	transition_mode [DCA_SUBFRAMES][DCA_CHANNELS][DCA_SUBBANDS]
	Transition mode. More...

int32_t	scale_factors [DCA_CHANNELS][DCA_SUBBANDS][2]
	Scale factors (2x for transients and X96) More...

int8_t	joint_scale_sel [DCA_CHANNELS]
	Joint subband codebook select. More...

int32_t	joint_scale_factors [DCA_CHANNELS][DCA_SUBBANDS_X96]
	Scale factors for joint subband coding. More...

int	prim_dmix_embedded
	Auxiliary dynamic downmix flag. More...

int	prim_dmix_type
	Auxiliary primary channel downmix type. More...

int	prim_dmix_coeff [DCA_DMIX_CHANNELS_MAX *DCA_CORE_CHANNELS_MAX]
	Dynamic downmix code coefficients. More...

int	ext_audio_mask
	Bit mask of fully decoded core extensions. More...

int	xch_pos
	Bit position of XCH frame in core substream. More...

int	xxch_crc_present
	CRC presence flag for XXCH channel set header. More...

int	xxch_mask_nbits
	Number of bits for loudspeaker mask. More...

int	xxch_core_mask
	Core loudspeaker activity mask. More...

int	xxch_spkr_mask
	Loudspeaker layout mask. More...

int	xxch_dmix_embedded
	Downmix already performed by encoder. More...

int	xxch_dmix_scale_inv
	Downmix scale factor. More...

int	xxch_dmix_mask [DCA_XXCH_CHANNELS_MAX]
	Downmix channel mapping mask. More...

int	xxch_dmix_coeff [DCA_XXCH_CHANNELS_MAX *DCA_CORE_CHANNELS_MAX]
	Downmix coefficients. More...

int	xxch_pos
	Bit position of XXCH frame in core substream. More...

int	x96_rev_no
	X96 revision number. More...

int	x96_crc_present
	CRC presence flag for X96 channel set header. More...

int	x96_nchannels
	Number of primary channels in X96 extension. More...

int	x96_high_res
	X96 high resolution flag. More...

int	x96_subband_start
	First encoded subband in X96 extension. More...

int	x96_rand
	Random seed for generating samples for unallocated X96 subbands. More...

int	x96_pos
	Bit position of X96 frame in core substream. More...

unsigned int	x96_subband_size

int32_t *	x96_subband_buffer
	X96 subband sample buffer base. More...

int32_t *	x96_subband_samples [DCA_CHANNELS][DCA_SUBBANDS_X96]
	X96 subband samples. More...

unsigned int	subband_size

int32_t *	subband_buffer
	Subband sample buffer base. More...

int32_t *	subband_samples [DCA_CHANNELS][DCA_SUBBANDS]
	Subband samples. More...

int32_t *	lfe_samples
	Decimated LFE samples. More...

DCADSPData	dcadsp_data [DCA_CHANNELS]
	FIR history buffers. More...

DCADSPContext *	dcadsp

DCADCTContext	dcadct

FFTContext	imdct [2]

SynthFilterContext	synth

AVFloatDSPContext *	float_dsp

AVFixedDSPContext *	fixed_dsp

unsigned int	output_size

void *	output_buffer
	PCM output buffer base. More...

int32_t *	output_samples [DCA_SPEAKER_COUNT]
	PCM output for fixed point mode. More...

int32_t	output_history_lfe_fixed
	LFE PCM history for X96 filter. More...

float	output_history_lfe_float
	LFE PCM history for X96 filter. More...

int	ch_remap [DCA_SPEAKER_COUNT]
	Channel to speaker map. More...

int	request_mask
	Requested channel layout (for stereo downmix) More...

int	npcmsamples
	Number of PCM samples per channel. More...

int	output_rate
	Output sample rate (1x or 2x header rate) More...

int	filter_mode
	Previous filtering mode for detecting changes. More...

Detailed Description

Definition at line 101 of file dca_core.h.

Field Documentation

◆ avctx

◆ gb

◆ gb_in

GetBitContext DCACoreDecoder::gb_in

Definition at line 104 of file dca_core.h.

Referenced by ff_dca_core_parse(), and ff_dca_core_parse_exss().

◆ crc_present

int DCACoreDecoder::crc_present

CRC present flag.

Definition at line 107 of file dca_core.h.

Referenced by parse_coding_header(), parse_frame_header(), parse_subframe_header(), parse_x96_coding_header(), and parse_x96_subframe_header().

◆ npcmblocks

int DCACoreDecoder::npcmblocks

Number of PCM sample blocks.

Definition at line 108 of file dca_core.h.

Referenced by alloc_sample_buffer(), alloc_x96_sample_buffer(), ff_dca_core_filter_fixed(), filter_frame_float(), parse_frame_data(), parse_frame_header(), parse_subframe_audio(), parse_x96_frame_data(), parse_x96_subframe_audio(), and parse_xbr_subframe().

◆ frame_size

int DCACoreDecoder::frame_size

Primary frame byte size.

Definition at line 109 of file dca_core.h.

Referenced by dcadec_decode_frame(), ff_dca_core_parse(), parse_frame_header(), parse_optional_info(), parse_x96_frame(), and parse_xch_frame().

◆ audio_mode

int DCACoreDecoder::audio_mode

Audio channel arrangement.

Definition at line 110 of file dca_core.h.

Referenced by ff_dca_core_filter_frame(), ff_dca_core_parse_exss(), filter_frame_fixed(), filter_frame_float(), map_prm_ch_to_spkr(), parse_aux_data(), parse_coding_header(), and parse_frame_header().

◆ sample_rate

int DCACoreDecoder::sample_rate

Core audio sampling frequency.

Definition at line 111 of file dca_core.h.

Referenced by dcadec_decode_frame(), ff_dca_core_filter_fixed(), filter_frame_float(), and parse_frame_header().

◆ bit_rate

int DCACoreDecoder::bit_rate

Transmission bit rate.

Definition at line 112 of file dca_core.h.

Referenced by ff_dca_core_filter_frame(), parse_frame_header(), parse_subframe_audio(), and parse_x96_subframe_audio().

◆ drc_present

int DCACoreDecoder::drc_present

Embedded dynamic range flag.

Definition at line 113 of file dca_core.h.

Referenced by parse_frame_header(), and parse_subframe_header().

◆ ts_present

int DCACoreDecoder::ts_present

Embedded time stamp flag.

Definition at line 114 of file dca_core.h.

Referenced by parse_frame_header(), and parse_optional_info().

◆ aux_present

int DCACoreDecoder::aux_present

Auxiliary data flag.

Definition at line 115 of file dca_core.h.

Referenced by parse_frame_header(), and parse_optional_info().

◆ ext_audio_type

int DCACoreDecoder::ext_audio_type

Extension audio descriptor flag.

Definition at line 116 of file dca_core.h.

Referenced by parse_frame_header(), and parse_optional_info().

◆ ext_audio_present

int DCACoreDecoder::ext_audio_present

Extended coding flag.

Definition at line 117 of file dca_core.h.

Referenced by parse_frame_header(), and parse_optional_info().

◆ sync_ssf

int DCACoreDecoder::sync_ssf

Audio sync word insertion flag.

Definition at line 118 of file dca_core.h.

Referenced by parse_frame_header(), parse_subframe_audio(), parse_x96_subframe_audio(), and parse_xbr_subframe().

◆ lfe_present

int DCACoreDecoder::lfe_present

Low frequency effects flag.

Definition at line 119 of file dca_core.h.

Referenced by ff_dca_core_filter_fixed(), ff_dca_core_parse_exss(), filter_frame_float(), parse_aux_data(), parse_coding_header(), parse_frame_header(), and parse_subframe_audio().

◆ predictor_history

int DCACoreDecoder::predictor_history

Predictor history flag switch.

Definition at line 120 of file dca_core.h.

Referenced by alloc_sample_buffer(), alloc_x96_sample_buffer(), and parse_frame_header().

◆ filter_perfect

int DCACoreDecoder::filter_perfect

Multirate interpolator switch.

Definition at line 121 of file dca_core.h.

Referenced by ff_dca_core_filter_fixed(), filter_frame_float(), and parse_frame_header().

◆ source_pcm_res

int DCACoreDecoder::source_pcm_res

Source PCM resolution.

Definition at line 122 of file dca_core.h.

Referenced by parse_frame_header().

◆ es_format

int DCACoreDecoder::es_format

Extended surround (ES) mastering flag.

Definition at line 123 of file dca_core.h.

Referenced by filter_frame_fixed(), filter_frame_float(), and parse_frame_header().

◆ sumdiff_front

int DCACoreDecoder::sumdiff_front

Front sum/difference flag.

Definition at line 124 of file dca_core.h.

Referenced by filter_frame_fixed(), filter_frame_float(), and parse_frame_header().

◆ sumdiff_surround

int DCACoreDecoder::sumdiff_surround

Surround sum/difference flag.

Definition at line 125 of file dca_core.h.

Referenced by filter_frame_fixed(), filter_frame_float(), and parse_frame_header().

◆ nsubframes

int DCACoreDecoder::nsubframes

Number of subframes.

Definition at line 128 of file dca_core.h.

Referenced by parse_coding_header(), parse_frame_data(), parse_x96_frame_data(), and parse_xbr_frame().

◆ nchannels

int DCACoreDecoder::nchannels

Number of primary audio channels (incl. extension channels)

Definition at line 129 of file dca_core.h.

Referenced by ff_dca_core_filter_fixed(), ff_dca_core_parse_exss(), filter_frame_fixed(), filter_frame_float(), parse_coding_header(), parse_frame_data(), parse_subframe_audio(), parse_subframe_header(), parse_x96_frame(), parse_x96_frame_exss(), parse_xbr_frame(), parse_xch_frame(), and parse_xxch_frame().

◆ ch_mask

int DCACoreDecoder::ch_mask

Speaker layout mask (incl. LFE and extension channels)

Definition at line 130 of file dca_core.h.

Referenced by ff_dca_core_filter_fixed(), ff_dca_core_filter_frame(), ff_dca_core_map_spkr(), ff_dca_core_parse_exss(), filter_frame_fixed(), filter_frame_float(), parse_coding_header(), parse_xch_frame(), and parse_xxch_frame().

◆ nsubbands

int8_t DCACoreDecoder::nsubbands[DCA_CHANNELS]

Subband activity count.

Definition at line 131 of file dca_core.h.

Referenced by parse_coding_header(), parse_frame_data(), parse_subframe_audio(), parse_subframe_header(), parse_x96_coding_header(), parse_x96_frame_data(), parse_x96_subframe_audio(), and parse_x96_subframe_header().

◆ subband_vq_start

int8_t DCACoreDecoder::subband_vq_start[DCA_CHANNELS]

High frequency VQ start subband.

Definition at line 132 of file dca_core.h.

Referenced by parse_coding_header(), parse_subframe_audio(), and parse_subframe_header().

◆ joint_intensity_index

int8_t DCACoreDecoder::joint_intensity_index[DCA_CHANNELS]

Joint intensity coding index.

Definition at line 133 of file dca_core.h.

Referenced by parse_coding_header(), parse_frame_data(), parse_subframe_audio(), parse_subframe_header(), parse_x96_coding_header(), parse_x96_frame_data(), parse_x96_subframe_audio(), and parse_x96_subframe_header().

◆ transition_mode_sel

int8_t DCACoreDecoder::transition_mode_sel[DCA_CHANNELS]

Transient mode code book.

Definition at line 134 of file dca_core.h.

Referenced by parse_coding_header(), and parse_subframe_header().

◆ scale_factor_sel

int8_t DCACoreDecoder::scale_factor_sel[DCA_CHANNELS]

Scale factor code book.

Definition at line 135 of file dca_core.h.

Referenced by parse_coding_header(), parse_subframe_header(), parse_x96_coding_header(), parse_x96_subframe_header(), and parse_xbr_subframe().

◆ bit_allocation_sel

int8_t DCACoreDecoder::bit_allocation_sel[DCA_CHANNELS]

Bit allocation quantizer select.

Definition at line 136 of file dca_core.h.

Referenced by parse_coding_header(), parse_subframe_header(), parse_x96_coding_header(), and parse_x96_subframe_header().

◆ quant_index_sel

int8_t DCACoreDecoder::quant_index_sel[DCA_CHANNELS][DCA_CODE_BOOKS]

Quantization index codebook select.

Definition at line 137 of file dca_core.h.

Referenced by extract_audio(), parse_coding_header(), and parse_x96_coding_header().

◆ scale_factor_adj

int32_t DCACoreDecoder::scale_factor_adj[DCA_CHANNELS][DCA_CODE_BOOKS]

Scale factor adjustment.

Definition at line 138 of file dca_core.h.

Referenced by parse_coding_header(), and parse_subframe_audio().

◆ nsubsubframes

int8_t DCACoreDecoder::nsubsubframes[DCA_SUBFRAMES]

Subsubframe count for each subframe.

Definition at line 141 of file dca_core.h.

Referenced by parse_subframe_audio(), parse_subframe_header(), parse_x96_subframe_audio(), and parse_xbr_subframe().

◆ prediction_mode

int8_t DCACoreDecoder::prediction_mode[DCA_CHANNELS][DCA_SUBBANDS_X96]

Prediction mode.

Definition at line 142 of file dca_core.h.

Referenced by parse_subframe_audio(), parse_subframe_header(), parse_x96_subframe_audio(), and parse_x96_subframe_header().

◆ prediction_vq_index

int16_t DCACoreDecoder::prediction_vq_index[DCA_CHANNELS][DCA_SUBBANDS_X96]

Prediction coefficients VQ address.

Definition at line 143 of file dca_core.h.

Referenced by parse_subframe_audio(), parse_subframe_header(), parse_x96_subframe_audio(), and parse_x96_subframe_header().

◆ bit_allocation

int8_t DCACoreDecoder::bit_allocation[DCA_CHANNELS][DCA_SUBBANDS_X96]

Bit allocation index.

Definition at line 144 of file dca_core.h.

Referenced by parse_subframe_audio(), parse_subframe_header(), parse_x96_subframe_audio(), and parse_x96_subframe_header().

◆ transition_mode

int8_t DCACoreDecoder::transition_mode[DCA_SUBFRAMES][DCA_CHANNELS][DCA_SUBBANDS]

Transition mode.

Definition at line 145 of file dca_core.h.

Referenced by parse_subframe_audio(), parse_subframe_header(), and parse_xbr_subframe().

◆ scale_factors

int32_t DCACoreDecoder::scale_factors[DCA_CHANNELS][DCA_SUBBANDS][2]

Scale factors (2x for transients and X96)

Definition at line 146 of file dca_core.h.

Referenced by parse_subframe_audio(), parse_subframe_header(), parse_x96_subframe_audio(), and parse_x96_subframe_header().

◆ joint_scale_sel

int8_t DCACoreDecoder::joint_scale_sel[DCA_CHANNELS]

Joint subband codebook select.

Definition at line 147 of file dca_core.h.

Referenced by parse_subframe_header(), and parse_x96_subframe_header().

◆ joint_scale_factors

int32_t DCACoreDecoder::joint_scale_factors[DCA_CHANNELS][DCA_SUBBANDS_X96]

Scale factors for joint subband coding.

Definition at line 148 of file dca_core.h.

Referenced by parse_subframe_audio(), parse_subframe_header(), parse_x96_subframe_audio(), and parse_x96_subframe_header().

◆ prim_dmix_embedded

int DCACoreDecoder::prim_dmix_embedded

Auxiliary dynamic downmix flag.

Definition at line 151 of file dca_core.h.

Referenced by ff_dca_core_filter_frame(), parse_aux_data(), and parse_optional_info().

◆ prim_dmix_type

int DCACoreDecoder::prim_dmix_type

Auxiliary primary channel downmix type.

Definition at line 152 of file dca_core.h.

Referenced by ff_dca_core_filter_frame(), and parse_aux_data().

◆ prim_dmix_coeff

int DCACoreDecoder::prim_dmix_coeff[DCA_DMIX_CHANNELS_MAX *DCA_CORE_CHANNELS_MAX]

Dynamic downmix code coefficients.

Definition at line 153 of file dca_core.h.

Referenced by filter_frame_fixed(), filter_frame_float(), and parse_aux_data().

◆ ext_audio_mask

int DCACoreDecoder::ext_audio_mask

Bit mask of fully decoded core extensions.

Definition at line 156 of file dca_core.h.

Referenced by ff_dca_core_filter_fixed(), ff_dca_core_filter_frame(), ff_dca_core_parse(), ff_dca_core_parse_exss(), filter_frame_fixed(), filter_frame_float(), and map_prm_ch_to_spkr().

◆ xch_pos

int DCACoreDecoder::xch_pos

Bit position of XCH frame in core substream.

Definition at line 159 of file dca_core.h.

Referenced by ff_dca_core_parse(), ff_dca_core_parse_exss(), and parse_optional_info().

◆ xxch_crc_present

int DCACoreDecoder::xxch_crc_present

CRC presence flag for XXCH channel set header.

Definition at line 162 of file dca_core.h.

Referenced by parse_coding_header(), and parse_xxch_frame().

◆ xxch_mask_nbits

int DCACoreDecoder::xxch_mask_nbits

Number of bits for loudspeaker mask.

Definition at line 163 of file dca_core.h.

Referenced by filter_frame_fixed(), filter_frame_float(), map_prm_ch_to_spkr(), parse_coding_header(), and parse_xxch_frame().

◆ xxch_core_mask

int DCACoreDecoder::xxch_core_mask

Core loudspeaker activity mask.

Definition at line 164 of file dca_core.h.

Referenced by filter_frame_fixed(), filter_frame_float(), map_prm_ch_to_spkr(), parse_coding_header(), and parse_xxch_frame().

◆ xxch_spkr_mask

int DCACoreDecoder::xxch_spkr_mask

Loudspeaker layout mask.

Definition at line 165 of file dca_core.h.

Referenced by map_prm_ch_to_spkr(), and parse_coding_header().

◆ xxch_dmix_embedded

int DCACoreDecoder::xxch_dmix_embedded

Downmix already performed by encoder.

Definition at line 166 of file dca_core.h.

Referenced by filter_frame_fixed(), filter_frame_float(), and parse_coding_header().

◆ xxch_dmix_scale_inv

int DCACoreDecoder::xxch_dmix_scale_inv

Downmix scale factor.

Definition at line 167 of file dca_core.h.

Referenced by filter_frame_fixed(), filter_frame_float(), and parse_coding_header().

◆ xxch_dmix_mask

int DCACoreDecoder::xxch_dmix_mask[DCA_XXCH_CHANNELS_MAX]

Downmix channel mapping mask.

Definition at line 168 of file dca_core.h.

Referenced by filter_frame_fixed(), filter_frame_float(), and parse_coding_header().

◆ xxch_dmix_coeff

int DCACoreDecoder::xxch_dmix_coeff[DCA_XXCH_CHANNELS_MAX *DCA_CORE_CHANNELS_MAX]

Downmix coefficients.

Definition at line 169 of file dca_core.h.

Referenced by filter_frame_fixed(), filter_frame_float(), and parse_coding_header().

◆ xxch_pos

int DCACoreDecoder::xxch_pos

Bit position of XXCH frame in core substream.

Definition at line 170 of file dca_core.h.

Referenced by ff_dca_core_parse(), ff_dca_core_parse_exss(), and parse_optional_info().

◆ x96_rev_no

int DCACoreDecoder::x96_rev_no

X96 revision number.

Definition at line 173 of file dca_core.h.

Referenced by parse_x96_coding_header(), parse_x96_frame(), and parse_x96_frame_exss().

◆ x96_crc_present

int DCACoreDecoder::x96_crc_present

CRC presence flag for X96 channel set header.

Definition at line 174 of file dca_core.h.

Referenced by parse_x96_coding_header(), parse_x96_frame(), and parse_x96_frame_exss().

◆ x96_nchannels

int DCACoreDecoder::x96_nchannels

Number of primary channels in X96 extension.

Definition at line 175 of file dca_core.h.

Referenced by ff_dca_core_filter_fixed(), filter_frame_float(), parse_x96_coding_header(), parse_x96_frame(), parse_x96_frame_data(), parse_x96_frame_exss(), parse_x96_subframe_audio(), and parse_x96_subframe_header().

◆ x96_high_res

int DCACoreDecoder::x96_high_res

X96 high resolution flag.

Definition at line 176 of file dca_core.h.

Referenced by parse_x96_coding_header(), and parse_x96_subframe_header().

◆ x96_subband_start

int DCACoreDecoder::x96_subband_start

First encoded subband in X96 extension.

Definition at line 177 of file dca_core.h.

Referenced by parse_x96_coding_header(), parse_x96_frame_data(), parse_x96_subframe_audio(), and parse_x96_subframe_header().

◆ x96_rand

int DCACoreDecoder::x96_rand

Random seed for generating samples for unallocated X96 subbands.

Definition at line 178 of file dca_core.h.

Referenced by ff_dca_core_init(), and rand_x96().

◆ x96_pos

int DCACoreDecoder::x96_pos

Bit position of X96 frame in core substream.

Definition at line 179 of file dca_core.h.

Referenced by ff_dca_core_parse(), ff_dca_core_parse_exss(), and parse_optional_info().

◆ x96_subband_size

unsigned int DCACoreDecoder::x96_subband_size

Definition at line 182 of file dca_core.h.

Referenced by alloc_x96_sample_buffer(), and ff_dca_core_close().

◆ x96_subband_buffer

int32_t* DCACoreDecoder::x96_subband_buffer

X96 subband sample buffer base.

Definition at line 183 of file dca_core.h.

Referenced by alloc_x96_sample_buffer(), ff_dca_core_close(), and ff_dca_core_flush().

◆ x96_subband_samples

int32_t* DCACoreDecoder::x96_subband_samples[DCA_CHANNELS][DCA_SUBBANDS_X96]

X96 subband samples.

Definition at line 184 of file dca_core.h.

Referenced by alloc_x96_sample_buffer(), erase_x96_adpcm_history(), ff_dca_core_filter_fixed(), filter_frame_float(), parse_x96_frame_data(), and parse_x96_subframe_audio().

◆ subband_size

unsigned int DCACoreDecoder::subband_size

Definition at line 186 of file dca_core.h.

Referenced by alloc_sample_buffer(), and ff_dca_core_close().

◆ subband_buffer

int32_t* DCACoreDecoder::subband_buffer

Subband sample buffer base.

Definition at line 187 of file dca_core.h.

Referenced by alloc_sample_buffer(), ff_dca_core_close(), and ff_dca_core_flush().

◆ subband_samples

int32_t* DCACoreDecoder::subband_samples[DCA_CHANNELS][DCA_SUBBANDS]

Subband samples.

Definition at line 188 of file dca_core.h.

Referenced by alloc_sample_buffer(), erase_adpcm_history(), ff_dca_core_filter_fixed(), filter_frame_float(), parse_frame_data(), parse_subframe_audio(), and parse_xbr_subframe().

◆ lfe_samples

int32_t* DCACoreDecoder::lfe_samples

Decimated LFE samples.

Definition at line 189 of file dca_core.h.

Referenced by alloc_sample_buffer(), ff_dca_core_filter_fixed(), ff_dca_core_flush(), filter_frame_float(), and parse_subframe_audio().

◆ dcadsp_data

DCADSPData DCACoreDecoder::dcadsp_data[DCA_CHANNELS]

FIR history buffers.

Definition at line 192 of file dca_core.h.

Referenced by erase_dsp_history(), ff_dca_core_filter_fixed(), and filter_frame_float().

◆ dcadsp

DCADSPContext* DCACoreDecoder::dcadsp

Definition at line 193 of file dca_core.h.

Referenced by dcadec_init(), ff_dca_core_filter_fixed(), filter_frame_fixed(), filter_frame_float(), parse_subframe_audio(), and parse_x96_subframe_audio().

◆ dcadct

DCADCTContext DCACoreDecoder::dcadct

Definition at line 194 of file dca_core.h.

Referenced by ff_dca_core_filter_fixed(), and ff_dca_core_init().

◆ imdct

FFTContext DCACoreDecoder::imdct[2]

Definition at line 195 of file dca_core.h.

Referenced by ff_dca_core_close(), ff_dca_core_init(), and filter_frame_float().

◆ synth

SynthFilterContext DCACoreDecoder::synth

Definition at line 196 of file dca_core.h.

Referenced by ff_dca_core_filter_fixed(), ff_dca_core_init(), and filter_frame_float().

◆ float_dsp

AVFloatDSPContext* DCACoreDecoder::float_dsp

Definition at line 197 of file dca_core.h.

Referenced by ff_dca_core_close(), ff_dca_core_init(), and filter_frame_float().

◆ fixed_dsp

AVFixedDSPContext* DCACoreDecoder::fixed_dsp

Definition at line 198 of file dca_core.h.

Referenced by ff_dca_core_close(), ff_dca_core_init(), and filter_frame_fixed().

◆ output_size

unsigned int DCACoreDecoder::output_size

Definition at line 201 of file dca_core.h.

Referenced by ff_dca_core_close(), ff_dca_core_filter_fixed(), and filter_frame_float().

◆ output_buffer

void* DCACoreDecoder::output_buffer

PCM output buffer base.

Definition at line 202 of file dca_core.h.

Referenced by ff_dca_core_close(), ff_dca_core_filter_fixed(), and filter_frame_float().

◆ output_samples

int32_t* DCACoreDecoder::output_samples[DCA_SPEAKER_COUNT]

PCM output for fixed point mode.

Definition at line 203 of file dca_core.h.

Referenced by combine_residual_frame(), ff_dca_core_filter_fixed(), and filter_frame_fixed().

◆ output_history_lfe_fixed

int32_t DCACoreDecoder::output_history_lfe_fixed

LFE PCM history for X96 filter.

Definition at line 204 of file dca_core.h.

Referenced by erase_dsp_history(), and ff_dca_core_filter_fixed().

◆ output_history_lfe_float

float DCACoreDecoder::output_history_lfe_float

LFE PCM history for X96 filter.

Definition at line 205 of file dca_core.h.

Referenced by erase_dsp_history(), and filter_frame_float().

◆ ch_remap

int DCACoreDecoder::ch_remap[DCA_SPEAKER_COUNT]

Channel to speaker map.

Definition at line 207 of file dca_core.h.

Referenced by ff_dca_core_filter_frame(), filter_frame_fixed(), and filter_frame_float().

◆ request_mask

int DCACoreDecoder::request_mask

Requested channel layout (for stereo downmix)

Definition at line 208 of file dca_core.h.

Referenced by ff_dca_core_filter_frame(), filter_frame_fixed(), and filter_frame_float().

◆ npcmsamples

int DCACoreDecoder::npcmsamples

Number of PCM samples per channel.

Definition at line 210 of file dca_core.h.

Referenced by combine_residual_frame(), ff_dca_core_filter_fixed(), and filter_frame_fixed().

◆ output_rate

int DCACoreDecoder::output_rate

Output sample rate (1x or 2x header rate)

Definition at line 211 of file dca_core.h.

Referenced by combine_residual_frame(), ff_dca_core_filter_fixed(), and filter_frame_fixed().

◆ filter_mode

int DCACoreDecoder::filter_mode

Previous filtering mode for detecting changes.

Definition at line 213 of file dca_core.h.

Referenced by dcadec_decode_frame(), and set_filter_mode().

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

libavcodec/dca_core.h

Data Fields

Detailed Description

Field Documentation

◆ avctx

◆ gb

◆ gb_in

◆ crc_present

◆ npcmblocks

◆ frame_size

◆ audio_mode

◆ sample_rate

◆ bit_rate

◆ drc_present

◆ ts_present

◆ aux_present

◆ ext_audio_type

◆ ext_audio_present

◆ sync_ssf

◆ lfe_present

◆ predictor_history

◆ filter_perfect

◆ source_pcm_res

◆ es_format

◆ sumdiff_front

◆ sumdiff_surround

◆ nsubframes

◆ nchannels

◆ ch_mask

◆ nsubbands

◆ subband_vq_start

◆ joint_intensity_index

◆ transition_mode_sel

◆ scale_factor_sel

◆ bit_allocation_sel

◆ quant_index_sel

◆ scale_factor_adj

◆ nsubsubframes

◆ prediction_mode

◆ prediction_vq_index

◆ bit_allocation

◆ transition_mode

◆ scale_factors

◆ joint_scale_sel

◆ joint_scale_factors

◆ prim_dmix_embedded

◆ prim_dmix_type

◆ prim_dmix_coeff

◆ ext_audio_mask

◆ xch_pos

◆ xxch_crc_present

◆ xxch_mask_nbits

◆ xxch_core_mask

◆ xxch_spkr_mask

◆ xxch_dmix_embedded

◆ xxch_dmix_scale_inv

◆ xxch_dmix_mask

◆ xxch_dmix_coeff

◆ xxch_pos

◆ x96_rev_no

◆ x96_crc_present

◆ x96_nchannels

◆ x96_high_res

◆ x96_subband_start

◆ x96_rand

◆ x96_pos

◆ x96_subband_size

◆ x96_subband_buffer

◆ x96_subband_samples

◆ subband_size

◆ subband_buffer

◆ subband_samples

◆ lfe_samples

◆ dcadsp_data

◆ dcadsp

◆ dcadct

◆ imdct

◆ synth

◆ float_dsp

◆ fixed_dsp

◆ output_size