AAC encoder context. More...

#include <libavcodec/aacenc.h>

Data Fields
AVClass *	av_class

AACEncOptions	options
	encoding options More...

PutBitContext	pb

FFTContext	mdct1024
	long (1024 samples) frame transform context More...

FFTContext	mdct128
	short (128 samples) frame transform context More...

AVFloatDSPContext *	fdsp

AACPCEInfo	pce
	PCE data, if needed. More...

float *	planar_samples [16]
	saved preprocessed input More...

int	profile
	copied from avctx More...

int	needs_pce
	flag for non-standard layout More...

LPCContext	lpc
	used by TNS More...

int	samplerate_index
	MPEG-4 samplerate index. More...

int	channels
	channel count More...

const uint8_t *	reorder_map
	lavc to aac reorder map More...

const uint8_t *	chan_map
	channel configuration map More...

ChannelElement *	cpe
	channel elements More...

FFPsyContext	psy

struct FFPsyPreprocessContext *	psypp

const AACCoefficientsEncoder *	coder

int	cur_channel
	current channel for coder context More...

int	random_state

float	lambda

int	last_frame_pb_count
	number of bits for the previous frame More...

float	lambda_sum
	sum(lambda), for Qvg reporting More...

int	lambda_count
	count(lambda), for Qvg reporting More...

enum RawDataBlockType	cur_type
	channel group type cur_channel belongs to More...

AudioFrameQueue	afq

int	qcoefs [96]
	quantized coefficients More...

float	scoefs [1024]
	scaled coefficients More...

uint16_t	quantize_band_cost_cache_generation

AACQuantizeBandCostCacheEntry	quantize_band_cost_cache [256][128]
	memoization area for quantize_band_cost More...

void(*	abs_pow34 )(float out, const float in, const int size)

void(*	quant_bands )(int out, const float in, const float *scaled, int size, int is_signed, int maxval, const float Q34, const float rounding)

struct {
float * samples

}	buffer

Detailed Description

AAC encoder context.

Definition at line 376 of file aacenc.h.

Field Documentation

◆ av_class

AVClass* AACEncContext::av_class

Definition at line 377 of file aacenc.h.

◆ options

AACEncOptions AACEncContext::options

encoding options

Definition at line 378 of file aacenc.h.

Referenced by aac_encode_frame(), aac_encode_init(), ff_aac_coder_init_mips(), and search_for_quantizers_twoloop().

◆ pb

PutBitContext AACEncContext::pb

Definition at line 379 of file aacenc.h.

Referenced by aac_encode_frame(), codebook_trellis_rate(), encode_individual_channel(), encode_pulses(), encode_scale_factors(), encode_spectral_coeffs(), encode_window_bands_info(), ff_aac_encode_ltp_info(), ff_aac_encode_main_pred(), ff_aac_encode_tns_info(), put_bitstream_info(), and put_ics_info().

◆ mdct1024

FFTContext AACEncContext::mdct1024

long (1024 samples) frame transform context

Definition at line 380 of file aacenc.h.

Referenced by aac_encode_end(), aac_encode_frame(), apply_window_and_mdct(), and dsp_init().

◆ mdct128

FFTContext AACEncContext::mdct128

short (128 samples) frame transform context

Definition at line 381 of file aacenc.h.

Referenced by aac_encode_end(), apply_window_and_mdct(), and dsp_init().

◆ fdsp

AVFloatDSPContext* AACEncContext::fdsp

Definition at line 382 of file aacenc.h.

Referenced by aac_encode_end(), aac_encode_frame(), apply_window_and_mdct(), dsp_init(), and search_for_pns().

◆ pce

AACPCEInfo AACEncContext::pce

PCE data, if needed.

Definition at line 383 of file aacenc.h.

Referenced by aac_encode_init(), and put_pce().

◆ planar_samples

float* AACEncContext::planar_samples[16]

saved preprocessed input

Definition at line 384 of file aacenc.h.

Referenced by aac_encode_frame(), alloc_buffers(), copy_input_samples(), ff_aac_ltp_insert_new_frame(), and ff_aac_update_ltp().

◆ profile

int AACEncContext::profile

copied from avctx

Definition at line 386 of file aacenc.h.

Referenced by aac_encode_init(), ff_aac_encode_ltp_info(), ff_aac_encode_main_pred(), ff_aac_search_for_tns(), ff_aac_update_ltp(), and put_audio_specific_config().

◆ needs_pce

int AACEncContext::needs_pce

flag for non-standard layout

Definition at line 387 of file aacenc.h.

Referenced by aac_encode_init(), and put_audio_specific_config().

◆ lpc

LPCContext AACEncContext::lpc

used by TNS

Definition at line 388 of file aacenc.h.

Referenced by aac_encode_end(), aac_encode_init(), ff_aac_apply_tns(), and ff_aac_search_for_tns().

◆ samplerate_index

int AACEncContext::samplerate_index

MPEG-4 samplerate index.

Definition at line 389 of file aacenc.h.

Referenced by aac_encode_frame(), aac_encode_init(), ff_aac_adjust_common_pred(), ff_aac_apply_main_pred(), ff_aac_encode_main_pred(), ff_aac_search_for_pred(), ff_aac_search_for_tns(), put_audio_specific_config(), and put_pce().

◆ channels

int AACEncContext::channels

channel count

Definition at line 390 of file aacenc.h.

Referenced by aac_encode_frame(), aac_encode_init(), alloc_buffers(), copy_input_samples(), and put_audio_specific_config().

◆ reorder_map

const uint8_t* AACEncContext::reorder_map

lavc to aac reorder map

Definition at line 391 of file aacenc.h.

Referenced by aac_encode_init(), and copy_input_samples().

◆ chan_map

const uint8_t* AACEncContext::chan_map

channel configuration map

Definition at line 392 of file aacenc.h.

Referenced by aac_encode_frame(), aac_encode_init(), alloc_buffers(), and ff_aac_ltp_insert_new_frame().

◆ cpe

ChannelElement* AACEncContext::cpe

channel elements

Definition at line 394 of file aacenc.h.

Referenced by aac_encode_end(), aac_encode_frame(), alloc_buffers(), and ff_aac_ltp_insert_new_frame().

◆ psy

FFPsyContext AACEncContext::psy

Definition at line 395 of file aacenc.h.

Referenced by aac_encode_end(), aac_encode_frame(), aac_encode_init(), encode_window_bands_info(), ff_aac_search_for_ltp(), ff_aac_search_for_pred(), ff_aac_search_for_tns(), mark_pns(), search_for_ms(), search_for_pns(), search_for_quantizers_anmr(), search_for_quantizers_fast(), and search_for_quantizers_twoloop().

◆ psypp

struct FFPsyPreprocessContext* AACEncContext::psypp

Definition at line 396 of file aacenc.h.

Referenced by aac_encode_end(), aac_encode_frame(), and aac_encode_init().

◆ coder

const AACCoefficientsEncoder* AACEncContext::coder

Definition at line 397 of file aacenc.h.

Referenced by aac_encode_frame(), aac_encode_init(), encode_band_info(), encode_individual_channel(), encode_spectral_coeffs(), and ff_aac_coder_init_mips().

◆ cur_channel

int AACEncContext::cur_channel

current channel for coder context

Definition at line 398 of file aacenc.h.

Referenced by aac_encode_frame(), encode_window_bands_info(), ff_aac_search_for_ltp(), ff_aac_search_for_pred(), ff_aac_search_for_tns(), ff_aac_update_ltp(), mark_pns(), search_for_ms(), search_for_pns(), search_for_quantizers_anmr(), search_for_quantizers_fast(), and search_for_quantizers_twoloop().

◆ random_state

int AACEncContext::random_state

Definition at line 399 of file aacenc.h.

Referenced by aac_encode_init(), and search_for_pns().

◆ lambda

float AACEncContext::lambda

Definition at line 400 of file aacenc.h.

Referenced by aac_encode_frame(), aac_encode_init(), encode_band_info(), encode_spectral_coeffs(), ff_aac_search_for_is(), ff_aac_search_for_ltp(), ff_aac_search_for_pred(), mark_pns(), search_for_ms(), and search_for_pns().

◆ last_frame_pb_count

int AACEncContext::last_frame_pb_count

number of bits for the previous frame

Definition at line 401 of file aacenc.h.

Referenced by aac_encode_frame(), and aac_encode_init().

◆ lambda_sum

float AACEncContext::lambda_sum

sum(lambda), for Qvg reporting

Definition at line 402 of file aacenc.h.

Referenced by aac_encode_end(), and aac_encode_frame().

◆ lambda_count

int AACEncContext::lambda_count

count(lambda), for Qvg reporting

Definition at line 403 of file aacenc.h.

Referenced by aac_encode_end(), and aac_encode_frame().

◆ cur_type

enum RawDataBlockType AACEncContext::cur_type

channel group type cur_channel belongs to

Definition at line 404 of file aacenc.h.

Referenced by aac_encode_frame(), and search_for_quantizers_twoloop().

◆ afq

AudioFrameQueue AACEncContext::afq

Definition at line 406 of file aacenc.h.

Referenced by aac_encode_end(), aac_encode_frame(), and aac_encode_init().

◆ qcoefs

int AACEncContext::qcoefs[96]

quantized coefficients

Definition at line 407 of file aacenc.h.

Referenced by quantize_and_encode_band_cost_template().

◆ scoefs

float AACEncContext::scoefs[1024]

scaled coefficients

Definition at line 408 of file aacenc.h.

Referenced by codebook_trellis_rate(), encode_window_bands_info(), ff_aac_search_for_ltp(), ff_aac_search_for_pred(), quantize_and_encode_band_cost_template(), search_for_ms(), search_for_pns(), search_for_quantizers_anmr(), search_for_quantizers_fast(), and search_for_quantizers_twoloop().

◆ quantize_band_cost_cache_generation

uint16_t AACEncContext::quantize_band_cost_cache_generation

Definition at line 410 of file aacenc.h.

Referenced by ff_quantize_band_cost_cache_init(), and quantize_band_cost_cached().

◆ quantize_band_cost_cache

AACQuantizeBandCostCacheEntry AACEncContext::quantize_band_cost_cache[256][128]

memoization area for quantize_band_cost

Definition at line 411 of file aacenc.h.