AACDecContext Struct Reference

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 *	mdct120
AVTXContext *	mdct128
AVTXContext *	mdct480
AVTXContext *	mdct512
AVTXContext *	mdct960
AVTXContext *	mdct1024
AVTXContext *	mdct_ltp
av_tx_fn	mdct120_fn
av_tx_fn	mdct128_fn
av_tx_fn	mdct480_fn
av_tx_fn	mdct512_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 253 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 254 of file aacdec.h.

avctx

struct AVCodecContext* AACDecContext::avctx

Definition at line 255 of file aacdec.h.

Referenced by aac_decode_er_frame(), aac_decode_frame(), aac_decode_frame_int(), aac_decode_init_internal(), che_configure(), decode_band_types(), decode_cpe(), decode_extension_payload(), decode_fill(), decode_ics_info(), decode_prediction(), decode_scalefactors(), decode_tns(), ff_aac_decode_ics(), get_che(), init(), init_fixed(), latm_decode_audio_specific_config(), latm_decode_frame(), output_configure(), parse_adts_frame_header(), 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(), skip_data_stream_element(), and spectral_to_sample().

dsp

AACDecDSP AACDecContext::dsp

Definition at line 257 of file aacdec.h.

Referenced by decode_cpe(), ff_aac_decode_ics(), init_dsp(), and spectral_to_sample().

proc

AACDecProc AACDecContext::proc

Definition at line 258 of file aacdec.h.

Referenced by aac_decode_frame_int(), ff_aac_decode_ics(), and init_dsp().

frame

struct AVFrame* AACDecContext::frame

Definition at line 260 of file aacdec.h.

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

is_saved

int AACDecContext::is_saved

Set if elements have stored overlap from previous frame.

Definition at line 262 of file aacdec.h.

che_drc

DynamicRangeControl AACDecContext::che_drc

Definition at line 263 of file aacdec.h.

Referenced by decode_extension_payload().

che

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

Definition at line 269 of file aacdec.h.

Referenced by apply_channel_coupling(), che_configure(), decode_close(), flush(), frame_configure_elements(), get_che(), output_configure(), and spectral_to_sample().

tag_che_map

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

Definition at line 270 of file aacdec.h.

Referenced by get_che(), and output_configure().

tags_mapped

int AACDecContext::tags_mapped

Definition at line 271 of file aacdec.h.

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

warned_remapping_once

int AACDecContext::warned_remapping_once

Definition at line 272 of file aacdec.h.

Referenced by get_che().

mdct120

AVTXContext* AACDecContext::mdct120

Definition at line 288 of file aacdec.h.

Referenced by decode_close(), and init_dsp().

mdct128

AVTXContext* AACDecContext::mdct128

Definition at line 289 of file aacdec.h.

Referenced by decode_close(), and init_dsp().

mdct480

AVTXContext* AACDecContext::mdct480

Definition at line 290 of file aacdec.h.

Referenced by decode_close(), and init_dsp().

mdct512

AVTXContext* AACDecContext::mdct512

Definition at line 291 of file aacdec.h.

Referenced by decode_close(), and init_dsp().

mdct960

AVTXContext* AACDecContext::mdct960

Definition at line 292 of file aacdec.h.

Referenced by decode_close(), and init_dsp().

mdct1024

AVTXContext* AACDecContext::mdct1024

Definition at line 293 of file aacdec.h.

Referenced by decode_close(), and init_dsp().

mdct_ltp

AVTXContext* AACDecContext::mdct_ltp

Definition at line 294 of file aacdec.h.

Referenced by decode_close(), and init_dsp().

mdct120_fn

av_tx_fn AACDecContext::mdct120_fn

Definition at line 296 of file aacdec.h.

Referenced by init_dsp().

mdct128_fn

av_tx_fn AACDecContext::mdct128_fn

Definition at line 297 of file aacdec.h.

Referenced by init_dsp().

mdct480_fn

av_tx_fn AACDecContext::mdct480_fn

Definition at line 298 of file aacdec.h.

Referenced by init_dsp().

mdct512_fn

av_tx_fn AACDecContext::mdct512_fn

Definition at line 299 of file aacdec.h.

Referenced by init_dsp().

mdct960_fn

av_tx_fn AACDecContext::mdct960_fn

Definition at line 300 of file aacdec.h.

Referenced by init_dsp().

mdct1024_fn

av_tx_fn AACDecContext::mdct1024_fn

Definition at line 301 of file aacdec.h.

Referenced by init_dsp().

mdct_ltp_fn

av_tx_fn AACDecContext::mdct_ltp_fn

Definition at line 302 of file aacdec.h.

Referenced by init_dsp().

fdsp

AVFloatDSPContext* AACDecContext::fdsp

Definition at line 305 of file aacdec.h.

Referenced by decode_close(), init(), and init_fixed().

@17

union { ... }

random_state

int AACDecContext::random_state

Definition at line 307 of file aacdec.h.

Referenced by init_dsp().

output_element

SingleChannelElement* AACDecContext::output_element[MAX_CHANNELS]

Points to each SingleChannelElement.

Definition at line 314 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 322 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 323 of file aacdec.h.

Referenced by aac_decode_frame(), aac_decode_frame_int(), and parse_adts_frame_header().

output_channel_order

enum AACOutputChannelOrder AACDecContext::output_channel_order

Definition at line 326 of file aacdec.h.

Referenced by output_configure().

oc

OutputConfiguration AACDecContext::oc[2]

Definition at line 328 of file aacdec.h.

Referenced by aac_decode_er_frame(), aac_decode_frame(), aac_decode_frame_int(), aac_decode_init_internal(), che_configure(), decode_cpe(), decode_extension_payload(), decode_ics_info(), decode_prediction(), decode_tns(), ff_aac_decode_ics(), get_che(), latm_decode_audio_specific_config(), latm_decode_frame(), output_configure(), parse_adts_frame_header(), pop_output_configuration(), push_output_configuration(), read_sbr_extension(), and spectral_to_sample().

warned_num_aac_frames

int AACDecContext::warned_num_aac_frames

Definition at line 329 of file aacdec.h.

Referenced by parse_adts_frame_header().

warned_960_sbr

int AACDecContext::warned_960_sbr

Definition at line 330 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 331 of file aacdec.h.

Referenced by set_default_channel_config().

warned_gain_control

int AACDecContext::warned_gain_control

Definition at line 332 of file aacdec.h.

Referenced by ff_aac_decode_ics().

warned_he_aac_mono

int AACDecContext::warned_he_aac_mono

Definition at line 333 of file aacdec.h.

Referenced by decode_extension_payload(), and read_sbr_extension().

is_fixed

int AACDecContext::is_fixed

Definition at line 335 of file aacdec.h.

Referenced by aac_decode_init(), aac_decode_init_fixed(), aac_decode_init_internal(), che_configure(), decode_close(), decode_extension_payload(), decode_ltp(), decode_tns(), init_dsp(), and spectral_to_sample().

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

• libavcodec/aac/aacdec.h