main AAC decoding context More...

#include <aacdec.h>

Public Member Functions
temporary aligned temporary buffers
(We do not want to have these on the stack.)
	INTFLOAT_ALIGNED_UNION (32, buf_mdct, 1024)

	INTFLOAT_ALIGNED_UNION (32, temp, 128)

Data Fields
const struct AVClass *	class

struct AVCodecContext *	avctx

AACDecDSP	dsp

AACDecProc	proc

struct AVFrame *	frame

int	is_saved
	Set if elements have stored overlap from previous frame. More...

DynamicRangeControl	che_drc

enum AACOutputChannelOrder	output_channel_order

OutputConfiguration	oc [2]

int	warned_num_aac_frames

int	warned_960_sbr

unsigned	warned_71_wide

int	warned_gain_control

int	warned_he_aac_mono

int	is_fixed

AVFloatDSPContext *	fdsp

Channel element related data
ChannelElement *	che [4][MAX_ELEM_ID]

ChannelElement *	tag_che_map [4][MAX_ELEM_ID]

int	tags_mapped

int	warned_remapping_once

Computed / set up during initialization
AVTXContext *	mdct96

AVTXContext *	mdct120

AVTXContext *	mdct128

AVTXContext *	mdct480

AVTXContext *	mdct512

AVTXContext *	mdct768

AVTXContext *	mdct960

AVTXContext *	mdct1024

AVTXContext *	mdct_ltp

av_tx_fn	mdct96_fn

av_tx_fn	mdct120_fn

av_tx_fn	mdct128_fn

av_tx_fn	mdct480_fn

av_tx_fn	mdct512_fn

av_tx_fn	mdct768_fn

av_tx_fn	mdct960_fn

av_tx_fn	mdct1024_fn

av_tx_fn	mdct_ltp_fn

union {
AVFloatDSPContext * fdsp

};

int	random_state

Members used for output
SingleChannelElement *	output_element [MAX_CHANNELS]
	Points to each SingleChannelElement. More...

Japanese DTV specific extension
int	force_dmono_mode
	0->not dmono, 1->use first channel, 2->use second channel More...

int	dmono_mode
	0->not dmono, 1->use first channel, 2->use second channel More...

Detailed Description

main AAC decoding context

Definition at line 448 of file aacdec.h.

Member Function Documentation

◆ INTFLOAT_ALIGNED_UNION() [1/2]

AACDecContext::INTFLOAT_ALIGNED_UNION	(	32	,
		buf_mdct	,
		1024
	)

◆ INTFLOAT_ALIGNED_UNION() [2/2]

AACDecContext::INTFLOAT_ALIGNED_UNION	(	32	,
		temp	,
		128
	)

Field Documentation

◆ class

const struct AVClass* AACDecContext::class

Definition at line 449 of file aacdec.h.

◆ avctx

struct AVCodecContext* AACDecContext::avctx

Definition at line 450 of file aacdec.h.

Referenced by aac_decode_er_frame(), aac_decode_frame(), aac_decode_frame_int(), che_configure(), decode_band_types(), decode_cpe(), decode_extension_payload(), decode_fill(), decode_frame_ga(), decode_ics_info(), decode_loudness_set(), decode_prediction(), decode_scalefactors(), decode_usac_core_coder(), decode_usac_extension(), decode_usac_sbr_data(), decode_usac_scale_factors(), decode_usac_stereo_info(), ff_aac_decode_ics(), ff_aac_decode_init(), ff_aac_decode_tns(), ff_aac_get_che(), ff_aac_output_configure(), ff_aac_usac_config_decode(), ff_aac_usac_decode_frame(), latm_decode_audio_specific_config(), latm_decode_frame(), parse_adts_frame_header(), parse_audio_preroll(), pop_output_configuration(), read_audio_mux_element(), read_sbr_data(), read_sbr_envelope(), read_sbr_extension(), read_sbr_grid(), read_sbr_noise(), read_stream_mux_config(), sbr_hf_calc_npatches(), sbr_hf_gen(), sbr_make_f_derived(), sbr_make_f_master(), sbr_mapping(), sbr_reset(), setup_sce(), skip_data_stream_element(), and spectral_to_sample().

◆ dsp

AACDecDSP AACDecContext::dsp

Definition at line 452 of file aacdec.h.

Referenced by decode_cpe(), ff_aac_decode_ics(), ff_aac_decode_init_fixed(), ff_aac_decode_init_float(), spectral_to_sample(), spectrum_decode(), and spectrum_scale().

◆ proc

AACDecProc AACDecContext::proc

Definition at line 453 of file aacdec.h.

Referenced by che_configure(), decode_close(), decode_extension_payload(), decode_frame_ga(), decode_usac_core_coder(), ff_aac_decode_ics(), ff_aac_decode_init_fixed(), ff_aac_decode_init_float(), and spectral_to_sample().

◆ frame

struct AVFrame* AACDecContext::frame

Definition at line 455 of file aacdec.h.

Referenced by aac_decode_er_frame(), aac_decode_frame_int(), decode_frame_ga(), ff_aac_usac_decode_frame(), and frame_configure_elements().

◆ is_saved

int AACDecContext::is_saved

Set if elements have stored overlap from previous frame.

Definition at line 457 of file aacdec.h.

◆ che_drc

DynamicRangeControl AACDecContext::che_drc

Definition at line 458 of file aacdec.h.

Referenced by decode_extension_payload().

◆ che

ChannelElement* AACDecContext::che[4][MAX_ELEM_ID]

Definition at line 464 of file aacdec.h.

Referenced by apply_channel_coupling(), che_configure(), decode_close(), ff_aac_get_che(), ff_aac_output_configure(), flush(), frame_configure_elements(), and spectral_to_sample().

◆ tag_che_map

ChannelElement* AACDecContext::tag_che_map[4][MAX_ELEM_ID]

Definition at line 465 of file aacdec.h.

Referenced by ff_aac_get_che(), and ff_aac_output_configure().

◆ tags_mapped

int AACDecContext::tags_mapped

Definition at line 466 of file aacdec.h.

Referenced by aac_decode_er_frame(), aac_decode_frame_int(), and ff_aac_get_che().

◆ warned_remapping_once

int AACDecContext::warned_remapping_once

Definition at line 467 of file aacdec.h.

Referenced by ff_aac_get_che().

◆ mdct96

AVTXContext* AACDecContext::mdct96

Definition at line 483 of file aacdec.h.

Referenced by decode_close(), and init_dsp().

◆ mdct120

AVTXContext* AACDecContext::mdct120

Definition at line 484 of file aacdec.h.

Referenced by decode_close(), and init_dsp().

◆ mdct128

AVTXContext* AACDecContext::mdct128

Definition at line 485 of file aacdec.h.

Referenced by decode_close(), and init_dsp().

◆ mdct480

AVTXContext* AACDecContext::mdct480

Definition at line 486 of file aacdec.h.

Referenced by decode_close(), and init_dsp().

◆ mdct512

AVTXContext* AACDecContext::mdct512

Definition at line 487 of file aacdec.h.

Referenced by decode_close(), and init_dsp().

◆ mdct768

AVTXContext* AACDecContext::mdct768

Definition at line 488 of file aacdec.h.

Referenced by decode_close(), and init_dsp().

◆ mdct960

AVTXContext* AACDecContext::mdct960

Definition at line 489 of file aacdec.h.

Referenced by decode_close(), and init_dsp().

◆ mdct1024

AVTXContext* AACDecContext::mdct1024

Definition at line 490 of file aacdec.h.

Referenced by decode_close(), and init_dsp().

◆ mdct_ltp

AVTXContext* AACDecContext::mdct_ltp

Definition at line 491 of file aacdec.h.

Referenced by decode_close(), and init_dsp().

◆ mdct96_fn

av_tx_fn AACDecContext::mdct96_fn

Definition at line 493 of file aacdec.h.

Referenced by init_dsp().

◆ mdct120_fn

av_tx_fn AACDecContext::mdct120_fn

Definition at line 494 of file aacdec.h.

Referenced by init_dsp().

◆ mdct128_fn

av_tx_fn AACDecContext::mdct128_fn

Definition at line 495 of file aacdec.h.

Referenced by init_dsp().

◆ mdct480_fn

av_tx_fn AACDecContext::mdct480_fn

Definition at line 496 of file aacdec.h.

Referenced by init_dsp().

◆ mdct512_fn

av_tx_fn AACDecContext::mdct512_fn

Definition at line 497 of file aacdec.h.

Referenced by init_dsp().

◆ mdct768_fn

av_tx_fn AACDecContext::mdct768_fn

Definition at line 498 of file aacdec.h.

Referenced by init_dsp().

◆ mdct960_fn

av_tx_fn AACDecContext::mdct960_fn

Definition at line 499 of file aacdec.h.

Referenced by init_dsp().

◆ mdct1024_fn

av_tx_fn AACDecContext::mdct1024_fn

Definition at line 500 of file aacdec.h.

Referenced by init_dsp().

◆ mdct_ltp_fn

av_tx_fn AACDecContext::mdct_ltp_fn

Definition at line 501 of file aacdec.h.

Referenced by init_dsp().

◆ fdsp

AVFloatDSPContext* AACDecContext::fdsp

Definition at line 504 of file aacdec.h.

Referenced by decode_close(), ff_aac_decode_init_fixed(), ff_aac_decode_init_float(), and spectrum_scale().

◆ @28

union { ... }

◆ random_state

int AACDecContext::random_state

Definition at line 506 of file aacdec.h.

Referenced by ff_aac_decode_init().

◆ output_element

SingleChannelElement* AACDecContext::output_element[MAX_CHANNELS]

Points to each SingleChannelElement.

Definition at line 513 of file aacdec.h.

Referenced by che_configure(), and frame_configure_elements().

◆ force_dmono_mode

int AACDecContext::force_dmono_mode

0->not dmono, 1->use first channel, 2->use second channel

Definition at line 521 of file aacdec.h.

Referenced by aac_decode_frame().

◆ dmono_mode

int AACDecContext::dmono_mode

0->not dmono, 1->use first channel, 2->use second channel

Definition at line 522 of file aacdec.h.

Referenced by aac_decode_frame(), decode_frame_ga(), ff_aac_usac_decode_frame(), and parse_adts_frame_header().

◆ output_channel_order

enum AACOutputChannelOrder AACDecContext::output_channel_order

Definition at line 525 of file aacdec.h.

Referenced by ff_aac_output_configure().

◆ oc

OutputConfiguration AACDecContext::oc[2]

◆ warned_num_aac_frames

int AACDecContext::warned_num_aac_frames

Definition at line 528 of file aacdec.h.

Referenced by parse_adts_frame_header().

◆ warned_960_sbr

int AACDecContext::warned_960_sbr

Definition at line 529 of file aacdec.h.

Referenced by decode_extension_payload(), and decode_ga_specific_config().

◆ warned_71_wide

unsigned AACDecContext::warned_71_wide

Definition at line 530 of file aacdec.h.

Referenced by ff_aac_set_default_channel_config().

◆ warned_gain_control

int AACDecContext::warned_gain_control

Definition at line 531 of file aacdec.h.

Referenced by ff_aac_decode_ics().

◆ warned_he_aac_mono

int AACDecContext::warned_he_aac_mono

Definition at line 532 of file aacdec.h.

Referenced by decode_extension_payload(), and read_sbr_extension().

◆ is_fixed

int AACDecContext::is_fixed

Definition at line 534 of file aacdec.h.

Referenced by aac_decode_frame_int(), decode_close(), decode_ltp(), ff_aac_decode_init_fixed(), ff_aac_decode_init_float(), ff_aac_decode_tns(), and init_dsp().

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

libavcodec/aac/aacdec.h

Public Member Functions

Data Fields

Detailed Description

Member Function Documentation

◆ INTFLOAT_ALIGNED_UNION() [1/2]

◆ INTFLOAT_ALIGNED_UNION() [2/2]

Field Documentation

◆ class

◆ avctx

◆ dsp

◆ proc

◆ frame

◆ is_saved

◆ che_drc

◆ che

◆ tag_che_map

◆ tags_mapped

◆ warned_remapping_once

◆ mdct96

◆ mdct120

◆ mdct128

◆ mdct480

◆ mdct512

◆ mdct768

◆ mdct960

◆ mdct1024

◆ mdct_ltp

◆ mdct96_fn

◆ mdct120_fn

◆ mdct128_fn

◆ mdct480_fn

◆ mdct512_fn

◆ mdct768_fn

◆ mdct960_fn

◆ mdct1024_fn

◆ mdct_ltp_fn

◆ fdsp

◆ @28

◆ random_state

◆ output_element

◆ force_dmono_mode

◆ dmono_mode

◆ output_channel_order

◆ oc

◆ warned_num_aac_frames

◆ warned_960_sbr

◆ warned_71_wide

◆ warned_gain_control

◆ warned_he_aac_mono

◆ is_fixed