DCAContext Struct Reference

Data Fields
AVCodecContext *	avctx
int	frame_type
	type of the current frame
int	samples_deficit
	deficit sample count
int	crc_present
	crc is present in the bitstream
int	sample_blocks
	number of PCM sample blocks
int	frame_size
	primary frame byte size
int	amode
	audio channels arrangement
int	sample_rate
	audio sampling rate
int	bit_rate
	transmission bit rate
int	bit_rate_index
	transmission bit rate index
int	downmix
	embedded downmix enabled
int	dynrange
	embedded dynamic range flag
int	timestamp
	embedded time stamp flag
int	aux_data
	auxiliary data flag
int	hdcd
	source material is mastered in HDCD
int	ext_descr
	extension audio descriptor flag
int	ext_coding
	extended coding flag
int	aspf
	audio sync word insertion flag
int	lfe
	low frequency effects flag
int	predictor_history
	predictor history flag
int	header_crc
	header crc check bytes
int	multirate_inter
	multirate interpolator switch
int	version
	encoder software revision
int	copy_history
	copy history
int	source_pcm_res
	source pcm resolution
int	front_sum
	front sum/difference flag
int	surround_sum
	surround sum/difference flag
int	dialog_norm
	dialog normalisation parameter
int	subframes
	number of subframes
int	total_channels
	number of channels including extensions
int	prim_channels
	number of primary audio channels
int	subband_activity [DCA_PRIM_CHANNELS_MAX]
	subband activity count
int	vq_start_subband [DCA_PRIM_CHANNELS_MAX]
	high frequency vq start subband
int	joint_intensity [DCA_PRIM_CHANNELS_MAX]
	joint intensity coding index
int	transient_huffman [DCA_PRIM_CHANNELS_MAX]
	transient mode code book
int	scalefactor_huffman [DCA_PRIM_CHANNELS_MAX]
	scale factor code book
int	bitalloc_huffman [DCA_PRIM_CHANNELS_MAX]
	bit allocation quantizer select
int	quant_index_huffman [DCA_PRIM_CHANNELS_MAX][DCA_ABITS_MAX]
	quantization index codebook select
float	scalefactor_adj [DCA_PRIM_CHANNELS_MAX][DCA_ABITS_MAX]
	scale factor adjustment
int	subsubframes [DCA_SUBFRAMES_MAX]
	number of subsubframes
int	partial_samples [DCA_SUBFRAMES_MAX]
	partial subsubframe samples count
int	prediction_mode [DCA_PRIM_CHANNELS_MAX][DCA_SUBBANDS]
	prediction mode (ADPCM used or not)
int	prediction_vq [DCA_PRIM_CHANNELS_MAX][DCA_SUBBANDS]
	prediction VQ coefs
int	bitalloc [DCA_PRIM_CHANNELS_MAX][DCA_SUBBANDS]
	bit allocation index
int	transition_mode [DCA_PRIM_CHANNELS_MAX][DCA_SUBBANDS]
	transition mode (transients)
int	scale_factor [DCA_PRIM_CHANNELS_MAX][DCA_SUBBANDS][2]
	scale factors (2 if transient)
int	joint_huff [DCA_PRIM_CHANNELS_MAX]
	joint subband scale factors codebook
int	joint_scale_factor [DCA_PRIM_CHANNELS_MAX][DCA_SUBBANDS]
	joint subband scale factors
int	downmix_coef [DCA_PRIM_CHANNELS_MAX][2]
	stereo downmix coefficients
int	dynrange_coef
	dynamic range coefficient
int	high_freq_vq [DCA_PRIM_CHANNELS_MAX][DCA_SUBBANDS]
	VQ encoded high frequency subbands.
float	lfe_data [2 *DCA_LFE_MAX *(DCA_BLOCKS_MAX+4)]
	Low frequency effect data.
int	lfe_scale_factor
float	subband_samples_hist [DCA_PRIM_CHANNELS_MAX][DCA_SUBBANDS][4]
float	subband_fir_hist [DCA_PRIM_CHANNELS_MAX][512]
float	subband_fir_noidea [DCA_PRIM_CHANNELS_MAX][32]
int	hist_index [DCA_PRIM_CHANNELS_MAX]
float	raXin [32]
int	output
	type of output
float	subband_samples [DCA_BLOCKS_MAX][DCA_PRIM_CHANNELS_MAX][DCA_SUBBANDS][8]
float *	samples_chanptr [DCA_PRIM_CHANNELS_MAX+1]
float *	extra_channels [DCA_PRIM_CHANNELS_MAX+1]
uint8_t *	extra_channels_buffer
unsigned int	extra_channels_buffer_size
uint8_t	dca_buffer [DCA_MAX_FRAME_SIZE+DCA_MAX_EXSS_HEADER_SIZE+DCA_BUFFER_PADDING_SIZE]
int	dca_buffer_size
	how much data is in the dca_buffer
const int8_t *	channel_order_tab
	channel reordering table, lfe and non lfe
GetBitContext	gb
int	current_subframe
int	current_subsubframe
int	core_ext_mask
	present extensions in the core substream
int	xch_present
	XCh extension present and valid.
int	xch_base_channel
	index of first (only) channel containing XCH data
int	xxch_chset
int	xxch_nbits_spk_mask
uint32_t	xxch_core_spkmask
uint32_t	xxch_spk_masks [4]
int	xxch_chset_nch [4]
float	xxch_dmix_sf [DCA_CHSETS_MAX]
uint32_t	xxch_dmix_embedded
float	xxch_dmix_coeff [DCA_PRIM_CHANNELS_MAX][32]
int8_t	xxch_order_tab [32]
int8_t	lfe_index
int	static_fields
	static fields present
int	mix_metadata
	mixing metadata present
int	num_mix_configs
	number of mix out configurations
int	mix_config_num_ch [4]
	number of channels in each mix out configuration
int	profile
int	debug_flag
	used for suppressing repeated error messages output
AVFloatDSPContext	fdsp
FFTContext	imdct
SynthFilterContext	synth
DCADSPContext	dcadsp
FmtConvertContext	fmt_conv
PutBitContext	pb
int32_t	history [MAX_CHANNELS][512]
int	start [MAX_CHANNELS]
int	lfe_channel
int	sample_rate_code
int	lfe_data [SUBFRAMES *SUBSUBFRAMES *4]
int	a_mode
	audio channels arrangement
int	num_channel
int	lfe_state
int	lfe_offset
int32_t	pcm [FFMAX(LFE_INTERPOLATION, DCA_SUBBANDS_32)]
int32_t	subband [PCM_SAMPLES][MAX_CHANNELS][DCA_SUBBANDS_32]

Detailed Description

Definition at line 350 of file dcadec.c.

Field Documentation

AVCodecContext* DCAContext::avctx

Definition at line 351 of file dcadec.c.

Referenced by dca_decode_block(), dca_decode_init(), dca_exss_parse_asset_header(), dca_exss_parse_header(), dca_filter_channels(), dca_parse_audio_coding_header(), dca_parse_frame_header(), dca_subframe_header(), dca_subsubframe(), dca_xbr_parse_frame(), and dca_xxch_decode_frame().

int DCAContext::frame_type

type of the current frame

Definition at line 353 of file dcadec.c.

Referenced by dca_parse_frame_header().

int DCAContext::samples_deficit

deficit sample count

Definition at line 354 of file dcadec.c.

Referenced by dca_parse_frame_header().

int DCAContext::crc_present

crc is present in the bitstream

Definition at line 355 of file dcadec.c.

Referenced by dca_parse_audio_coding_header(), dca_parse_frame_header(), dca_subframe_footer(), and dca_subframe_header().

int DCAContext::sample_blocks

number of PCM sample blocks

Definition at line 356 of file dcadec.c.

Referenced by dca_decode_frame(), dca_parse_frame_header(), dca_xbr_parse_frame(), and dca_xxch_decode_frame().

int DCAContext::frame_size

primary frame byte size

Definition at line 357 of file dcadec.c.

Referenced by dca_decode_frame(), dca_parse_frame_header(), encode_frame(), put_frame(), and put_frame_header().

int DCAContext::amode

audio channels arrangement

Definition at line 358 of file dcadec.c.

Referenced by dca_decode_frame(), dca_filter_channels(), dca_parse_frame_header(), and dca_subframe_header().

int DCAContext::sample_rate

audio sampling rate

Definition at line 359 of file dcadec.c.

Referenced by dca_decode_frame(), and dca_parse_frame_header().

int DCAContext::bit_rate

transmission bit rate

Definition at line 360 of file dcadec.c.

Referenced by dca_decode_frame(), and dca_parse_frame_header().

int DCAContext::bit_rate_index

transmission bit rate index

Definition at line 361 of file dcadec.c.

Referenced by dca_parse_frame_header(), and dca_subsubframe().

int DCAContext::downmix

embedded downmix enabled

Definition at line 363 of file dcadec.c.

Referenced by dca_parse_frame_header(), dca_subframe_footer(), and dca_subframe_header().

int DCAContext::dynrange

embedded dynamic range flag

Definition at line 364 of file dcadec.c.

Referenced by dca_parse_frame_header(), dca_subframe_footer(), and dca_subframe_header().

int DCAContext::timestamp

embedded time stamp flag

Definition at line 365 of file dcadec.c.

Referenced by dca_parse_frame_header(), and dca_subframe_footer().

int DCAContext::aux_data

auxiliary data flag

Definition at line 366 of file dcadec.c.

Referenced by dca_parse_frame_header(), and dca_subframe_footer().

int DCAContext::hdcd

source material is mastered in HDCD

Definition at line 367 of file dcadec.c.

Referenced by dca_parse_frame_header().

int DCAContext::ext_descr

extension audio descriptor flag

Definition at line 368 of file dcadec.c.

Referenced by dca_decode_frame(), and dca_parse_frame_header().

int DCAContext::ext_coding

extended coding flag

Definition at line 369 of file dcadec.c.

Referenced by dca_decode_frame(), and dca_parse_frame_header().

int DCAContext::aspf

audio sync word insertion flag

Definition at line 370 of file dcadec.c.

Referenced by dca_parse_frame_header(), dca_subsubframe(), and dca_xbr_parse_frame().

int DCAContext::lfe

low frequency effects flag

Definition at line 371 of file dcadec.c.

Referenced by dca_decode_frame(), dca_filter_channels(), dca_parse_frame_header(), and dca_subframe_header().

int DCAContext::predictor_history

predictor history flag

Definition at line 372 of file dcadec.c.

Referenced by dca_parse_frame_header(), and dca_subsubframe().

int DCAContext::header_crc

header crc check bytes

Definition at line 373 of file dcadec.c.

Referenced by dca_parse_frame_header().

int DCAContext::multirate_inter

multirate interpolator switch

Definition at line 374 of file dcadec.c.

Referenced by dca_parse_frame_header(), and qmf_32_subbands().

int DCAContext::version

encoder software revision

Definition at line 375 of file dcadec.c.

Referenced by dca_parse_frame_header().

int DCAContext::copy_history

copy history

Definition at line 376 of file dcadec.c.

Referenced by dca_parse_frame_header().

int DCAContext::source_pcm_res

source pcm resolution

Definition at line 377 of file dcadec.c.

Referenced by dca_decode_frame(), and dca_parse_frame_header().

int DCAContext::front_sum

front sum/difference flag

Definition at line 378 of file dcadec.c.

Referenced by dca_parse_frame_header().

int DCAContext::surround_sum

surround sum/difference flag

Definition at line 379 of file dcadec.c.

Referenced by dca_parse_frame_header().

int DCAContext::dialog_norm

dialog normalisation parameter

Definition at line 380 of file dcadec.c.

Referenced by dca_parse_frame_header().

int DCAContext::subframes

number of subframes

Definition at line 383 of file dcadec.c.

Referenced by dca_decode_block(), dca_parse_audio_coding_header(), and dca_parse_frame_header().

int DCAContext::total_channels

number of channels including extensions

Definition at line 384 of file dcadec.c.

Referenced by dca_parse_audio_coding_header().

int DCAContext::prim_channels

number of primary audio channels

Definition at line 385 of file dcadec.c.

Referenced by dca_decode_frame(), dca_filter_channels(), dca_parse_audio_coding_header(), dca_subframe_header(), dca_subsubframe(), dca_xbr_parse_frame(), dca_xxch_decode_frame(), encode_frame(), encode_init(), lfe_downsample(), put_primary_audio_header(), and put_subframe().

int DCAContext::subband_activity[DCA_PRIM_CHANNELS_MAX]

subband activity count

Definition at line 386 of file dcadec.c.

Referenced by dca_parse_audio_coding_header(), dca_subframe_header(), and qmf_32_subbands().

int DCAContext::vq_start_subband[DCA_PRIM_CHANNELS_MAX]

high frequency vq start subband

Definition at line 387 of file dcadec.c.

Referenced by dca_parse_audio_coding_header(), dca_subframe_header(), and dca_subsubframe().

int DCAContext::joint_intensity[DCA_PRIM_CHANNELS_MAX]

joint intensity coding index

Definition at line 388 of file dcadec.c.

Referenced by dca_parse_audio_coding_header(), and dca_subframe_header().

int DCAContext::transient_huffman[DCA_PRIM_CHANNELS_MAX]

transient mode code book

Definition at line 389 of file dcadec.c.

Referenced by dca_parse_audio_coding_header(), and dca_subframe_header().

int DCAContext::scalefactor_huffman[DCA_PRIM_CHANNELS_MAX]

scale factor code book

Definition at line 390 of file dcadec.c.

Referenced by dca_parse_audio_coding_header(), dca_subframe_header(), and dca_xbr_parse_frame().

int DCAContext::bitalloc_huffman[DCA_PRIM_CHANNELS_MAX]

bit allocation quantizer select

Definition at line 391 of file dcadec.c.

Referenced by dca_parse_audio_coding_header(), and dca_subframe_header().

int DCAContext::quant_index_huffman[DCA_PRIM_CHANNELS_MAX][DCA_ABITS_MAX]

quantization index codebook select

Definition at line 392 of file dcadec.c.

Referenced by dca_parse_audio_coding_header(), and dca_subsubframe().

float DCAContext::scalefactor_adj[DCA_PRIM_CHANNELS_MAX][DCA_ABITS_MAX]

scale factor adjustment

Definition at line 393 of file dcadec.c.

Referenced by dca_parse_audio_coding_header(), and dca_subsubframe().

int DCAContext::subsubframes[DCA_SUBFRAMES_MAX]

number of subsubframes

Definition at line 396 of file dcadec.c.

Referenced by dca_decode_block(), dca_subframe_header(), dca_subsubframe(), and dca_xbr_parse_frame().

int DCAContext::partial_samples[DCA_SUBFRAMES_MAX]

partial subsubframe samples count

Definition at line 397 of file dcadec.c.

Referenced by dca_subframe_header().

int DCAContext::prediction_mode[DCA_PRIM_CHANNELS_MAX][DCA_SUBBANDS]

prediction mode (ADPCM used or not)

Definition at line 398 of file dcadec.c.

Referenced by dca_subframe_header(), and dca_subsubframe().

int DCAContext::prediction_vq[DCA_PRIM_CHANNELS_MAX][DCA_SUBBANDS]

prediction VQ coefs

Definition at line 399 of file dcadec.c.

Referenced by dca_subframe_header(), and dca_subsubframe().

int DCAContext::bitalloc[DCA_PRIM_CHANNELS_MAX][DCA_SUBBANDS]

bit allocation index

Definition at line 400 of file dcadec.c.

Referenced by dca_subframe_header(), and dca_subsubframe().

int DCAContext::transition_mode[DCA_PRIM_CHANNELS_MAX][DCA_SUBBANDS]

transition mode (transients)

Definition at line 401 of file dcadec.c.

Referenced by dca_subframe_header(), dca_subsubframe(), and dca_xbr_parse_frame().

int DCAContext::scale_factor

scale factors (2 if transient)

Definition at line 402 of file dcadec.c.

Referenced by dca_subframe_header(), dca_subsubframe(), and put_subframe().

int DCAContext::joint_huff[DCA_PRIM_CHANNELS_MAX]

joint subband scale factors codebook

Definition at line 403 of file dcadec.c.

Referenced by dca_subframe_header().

int DCAContext::joint_scale_factor[DCA_PRIM_CHANNELS_MAX][DCA_SUBBANDS]

joint subband scale factors

Definition at line 404 of file dcadec.c.

Referenced by dca_subframe_header().

int DCAContext::downmix_coef[DCA_PRIM_CHANNELS_MAX][2]

stereo downmix coefficients

Definition at line 405 of file dcadec.c.

Referenced by dca_filter_channels(), and dca_subframe_header().

int DCAContext::dynrange_coef

dynamic range coefficient

Definition at line 406 of file dcadec.c.

Referenced by dca_subframe_header().

int DCAContext::high_freq_vq[DCA_PRIM_CHANNELS_MAX][DCA_SUBBANDS]

VQ encoded high frequency subbands.

Definition at line 408 of file dcadec.c.

Referenced by dca_subframe_header(), and dca_subsubframe().

float DCAContext::lfe_data[2 *DCA_LFE_MAX *(DCA_BLOCKS_MAX+4)]

Low frequency effect data.

Definition at line 410 of file dcadec.c.

Referenced by dca_decode_frame(), dca_filter_channels(), dca_subframe_header(), encode_frame(), and put_subframe().

int DCAContext::lfe_scale_factor

Definition at line 411 of file dcadec.c.

Referenced by dca_subframe_header(), and put_subframe().

float DCAContext::subband_samples_hist[DCA_PRIM_CHANNELS_MAX][DCA_SUBBANDS][4]

Definition at line 414 of file dcadec.c.

Referenced by dca_subsubframe().

float DCAContext::subband_fir_hist[DCA_PRIM_CHANNELS_MAX][512]

Definition at line 415 of file dcadec.c.

Referenced by qmf_32_subbands().

float DCAContext::subband_fir_noidea[DCA_PRIM_CHANNELS_MAX][32]

Definition at line 416 of file dcadec.c.

Referenced by qmf_32_subbands().

int DCAContext::hist_index[DCA_PRIM_CHANNELS_MAX]

Definition at line 417 of file dcadec.c.

Referenced by qmf_32_subbands().

float DCAContext::raXin[32]

Definition at line 418 of file dcadec.c.

Referenced by qmf_32_subbands().

int DCAContext::output

type of output

Definition at line 420 of file dcadec.c.

Referenced by dca_decode_frame(), dca_filter_channels(), and dca_parse_frame_header().

float DCAContext::subband_samples[DCA_BLOCKS_MAX][DCA_PRIM_CHANNELS_MAX][DCA_SUBBANDS][8]

Definition at line 422 of file dcadec.c.

Referenced by dca_filter_channels(), dca_subsubframe(), and dca_xbr_parse_frame().

float* DCAContext::samples_chanptr[DCA_PRIM_CHANNELS_MAX+1]

Definition at line 423 of file dcadec.c.

Referenced by dca_decode_frame(), and dca_filter_channels().

float* DCAContext::extra_channels[DCA_PRIM_CHANNELS_MAX+1]

Definition at line 424 of file dcadec.c.

Referenced by dca_decode_frame().

uint8_t* DCAContext::extra_channels_buffer

Definition at line 425 of file dcadec.c.

Referenced by dca_decode_end(), and dca_decode_frame().

unsigned int DCAContext::extra_channels_buffer_size

Definition at line 426 of file dcadec.c.

Referenced by dca_decode_frame().

uint8_t DCAContext::dca_buffer[DCA_MAX_FRAME_SIZE+DCA_MAX_EXSS_HEADER_SIZE+DCA_BUFFER_PADDING_SIZE]

Definition at line 428 of file dcadec.c.

Referenced by dca_decode_frame(), and dca_parse_frame_header().

int DCAContext::dca_buffer_size

how much data is in the dca_buffer

Definition at line 429 of file dcadec.c.

Referenced by dca_decode_frame(), and dca_parse_frame_header().

const int8_t * DCAContext::channel_order_tab

channel reordering table, lfe and non lfe

Definition at line 431 of file dcadec.c.

Referenced by dca_decode_frame(), dca_filter_channels(), encode_frame(), and encode_init().

GetBitContext DCAContext::gb

Definition at line 432 of file dcadec.c.

Referenced by dca_decode_frame(), dca_exss_parse_asset_header(), dca_exss_parse_header(), dca_parse_audio_coding_header(), dca_parse_frame_header(), dca_subframe_footer(), dca_subframe_header(), dca_subsubframe(), dca_xbr_parse_frame(), and dca_xxch_decode_frame().

int DCAContext::current_subframe

Definition at line 434 of file dcadec.c.

Referenced by dca_decode_block(), dca_parse_audio_coding_header(), dca_subframe_header(), and dca_subsubframe().

int DCAContext::current_subsubframe

Definition at line 435 of file dcadec.c.

Referenced by dca_decode_block(), dca_parse_audio_coding_header(), and dca_subsubframe().

int DCAContext::core_ext_mask

present extensions in the core substream

Definition at line 437 of file dcadec.c.

Referenced by dca_decode_frame(), dca_exss_parse_asset_header(), and dca_exss_parse_header().

int DCAContext::xch_present

XCh extension present and valid.

Definition at line 440 of file dcadec.c.

Referenced by dca_decode_frame().

int DCAContext::xch_base_channel

index of first (only) channel containing XCH data

Definition at line 441 of file dcadec.c.

Referenced by dca_decode_frame().

int DCAContext::xxch_chset

Definition at line 444 of file dcadec.c.

Referenced by dca_decode_frame(), dca_parse_audio_coding_header(), and dca_xxch_decode_frame().

int DCAContext::xxch_nbits_spk_mask

Definition at line 445 of file dcadec.c.

Referenced by dca_decode_frame(), dca_parse_audio_coding_header(), and dca_xxch_decode_frame().

uint32_t DCAContext::xxch_core_spkmask

Definition at line 446 of file dcadec.c.

Referenced by dca_decode_frame(), dca_parse_audio_coding_header(), dca_xxch2index(), and dca_xxch_decode_frame().

uint32_t DCAContext::xxch_spk_masks[4]

Definition at line 447 of file dcadec.c.

Referenced by dca_decode_frame(), dca_parse_audio_coding_header(), and dca_xxch2index().

int DCAContext::xxch_chset_nch[4]

Definition at line 448 of file dcadec.c.

Referenced by dca_decode_frame(), and dca_parse_audio_coding_header().

float DCAContext::xxch_dmix_sf[DCA_CHSETS_MAX]

Definition at line 449 of file dcadec.c.

Referenced by dca_decode_frame(), and dca_parse_audio_coding_header().

uint32_t DCAContext::xxch_dmix_embedded

Definition at line 451 of file dcadec.c.

Referenced by dca_decode_frame(), dca_parse_audio_coding_header(), and dca_xxch_decode_frame().

float DCAContext::xxch_dmix_coeff[DCA_PRIM_CHANNELS_MAX][32]

Definition at line 452 of file dcadec.c.

Referenced by dca_decode_frame(), and dca_parse_audio_coding_header().

int8_t DCAContext::xxch_order_tab[32]

Definition at line 454 of file dcadec.c.

Referenced by dca_decode_frame().

int8_t DCAContext::lfe_index

Definition at line 455 of file dcadec.c.

Referenced by dca_decode_frame(), and dca_filter_channels().

int DCAContext::static_fields

static fields present

Definition at line 458 of file dcadec.c.

Referenced by dca_exss_parse_asset_header(), and dca_exss_parse_header().

int DCAContext::mix_metadata

mixing metadata present

Definition at line 459 of file dcadec.c.

Referenced by dca_exss_parse_asset_header(), and dca_exss_parse_header().

int DCAContext::num_mix_configs

number of mix out configurations

Definition at line 460 of file dcadec.c.

Referenced by dca_exss_parse_asset_header(), and dca_exss_parse_header().

int DCAContext::mix_config_num_ch[4]

number of channels in each mix out configuration

Definition at line 461 of file dcadec.c.

Referenced by dca_exss_parse_asset_header(), and dca_exss_parse_header().

int DCAContext::profile

Definition at line 463 of file dcadec.c.

Referenced by dca_decode_frame(), and dca_exss_parse_asset_header().

int DCAContext::debug_flag

used for suppressing repeated error messages output

Definition at line 465 of file dcadec.c.

Referenced by dca_subframe_header(), and dca_subsubframe().

AVFloatDSPContext DCAContext::fdsp

Definition at line 466 of file dcadec.c.

Referenced by dca_decode_frame(), and dca_decode_init().

FFTContext DCAContext::imdct

Definition at line 467 of file dcadec.c.

Referenced by dca_decode_end(), dca_decode_init(), and qmf_32_subbands().

SynthFilterContext DCAContext::synth

Definition at line 468 of file dcadec.c.

Referenced by dca_decode_init(), and qmf_32_subbands().

DCADSPContext DCAContext::dcadsp

Definition at line 469 of file dcadec.c.

Referenced by dca_decode_init(), and lfe_interpolation_fir().

FmtConvertContext DCAContext::fmt_conv

Definition at line 470 of file dcadec.c.

Referenced by dca_decode_init(), and dca_subsubframe().

PutBitContext DCAContext::pb

Definition at line 94 of file dcaenc.c.

Referenced by put_frame(), put_frame_header(), put_primary_audio_header(), put_sample7(), and put_subframe().

int32_t DCAContext::history[MAX_CHANNELS][512]

Definition at line 95 of file dcaenc.c.

Referenced by add_new_samples(), lfe_downsample(), and qmf_decompose().

int DCAContext::start[MAX_CHANNELS]

Definition at line 96 of file dcaenc.c.

Referenced by add_new_samples(), lfe_downsample(), and qmf_decompose().

int DCAContext::lfe_channel

Definition at line 99 of file dcaenc.c.

Referenced by encode_frame(), encode_init(), and put_subframe().

int DCAContext::sample_rate_code

Definition at line 100 of file dcaenc.c.

Referenced by encode_init(), and put_frame_header().

int DCAContext::lfe_data[SUBFRAMES *SUBSUBFRAMES *4]

Definition at line 103 of file dcaenc.c.

int DCAContext::a_mode

audio channels arrangement

Definition at line 105 of file dcaenc.c.

Referenced by encode_init().

int DCAContext::num_channel

Definition at line 106 of file dcaenc.c.

Referenced by encode_init(), and put_frame_header().

int DCAContext::lfe_state

Definition at line 107 of file dcaenc.c.

Referenced by encode_init(), and put_frame_header().

int DCAContext::lfe_offset

Definition at line 108 of file dcaenc.c.

Referenced by encode_frame(), and encode_init().

int32_t DCAContext::pcm[FFMAX(LFE_INTERPOLATION, DCA_SUBBANDS_32)]

Definition at line 111 of file dcaenc.c.

Referenced by encode_frame().

int32_t DCAContext::subband[PCM_SAMPLES][MAX_CHANNELS][DCA_SUBBANDS_32]

Definition at line 112 of file dcaenc.c.

Referenced by encode_frame().

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

• libavcodec/dcadec.c
• libavcodec/dcaenc.c