AACContext Struct Reference

main AAC context More...

#include <aac.h>

Data Fields
AVCodecContext *	avctx
MPEG4AudioConfig	m4ac
int	is_saved
	Set if elements have stored overlap from previous frame.
DynamicRangeControl	che_drc
float	temp [128]
enum OCStatus	output_configured
VO_AUDIO_CODECAPI	codec_api
VO_HANDLE	handle
VO_MEM_OPERATOR	mem_operator
VO_CODEC_INIT_USERDATA	user_data
Channel element related data
enum ChannelPosition	che_pos [4][MAX_ELEM_ID]
	channel element channel mapping with the first index as the first 4 raw data block types
ChannelElement *	che [4][MAX_ELEM_ID]
ChannelElement *	tag_che_map [4][MAX_ELEM_ID]
int	tags_mapped
temporary aligned temporary buffers
(We do not want to have these on the stack. )
float	buf_mdct [1024]
Computed / set up during initialization
FFTContext	mdct
FFTContext	mdct_small
FFTContext	mdct_ltp
DSPContext	dsp
FmtConvertContext	fmt_conv
int	random_state
Members used for output interleaving
float *	output_data [MAX_CHANNELS]
	Points to each element's 'ret' buffer (PCM output).

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Detailed Description

main AAC context

Definition at line 252 of file aac.h.

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Field Documentation

AVCodecContext* AACContext::avctx

Definition at line 253 of file aac.h.

Referenced by aac_decode_frame_int(), aac_decode_init(), apply_dependent_coupling(), decode_band_types(), decode_cpe(), decode_extension_payload(), decode_ics(), decode_ics_info(), decode_prediction(), decode_scalefactors(), decode_spectrum_and_dequant(), decode_tns(), ff_aac_sbr_ctx_init(), ff_decode_sbr_extension(), ff_sbr_apply(), latm_decode_audio_specific_config(), latm_decode_frame(), output_configure(), parse_adts_frame_header(), read_audio_mux_element(), read_sbr_data(), read_sbr_extension(), read_sbr_grid(), read_stream_mux_config(), sbr_hf_calc_npatches(), sbr_hf_gen(), sbr_make_f_derived(), sbr_make_f_master(), sbr_reset(), and skip_data_stream_element().

float AACContext::buf_mdct[1024]

Definition at line 277 of file aac.h.

Referenced by apply_ltp(), imdct_and_windowing(), and update_ltp().

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

Definition at line 267 of file aac.h.

Referenced by aac_decode_close(), apply_channel_coupling(), che_configure(), get_che(), output_configure(), and spectral_to_sample().

DynamicRangeControl AACContext::che_drc

Definition at line 258 of file aac.h.

Referenced by decode_extension_payload().

enum ChannelPosition AACContext::che_pos[4][MAX_ELEM_ID]

channel element channel mapping with the first index as the first 4 raw data block types

Definition at line 264 of file aac.h.

Referenced by aac_decode_frame_int(), decode_extension_payload(), decode_ga_specific_config(), and parse_adts_frame_header().

VO_AUDIO_CODECAPI AACContext::codec_api

Definition at line 29 of file libvo-aacenc.c.

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

DSPContext AACContext::dsp

Definition at line 287 of file aac.h.

Referenced by aac_decode_init(), apply_intensity_stereo(), apply_mid_side_stereo(), decode_spectrum_and_dequant(), ff_sbr_apply(), imdct_and_windowing(), update_ltp(), and windowing_and_mdct_ltp().

FmtConvertContext AACContext::fmt_conv

Definition at line 288 of file aac.h.

Referenced by aac_decode_frame_int(), and aac_decode_init().

VO_HANDLE AACContext::handle

Definition at line 30 of file libvo-aacenc.c.

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

int AACContext::is_saved

Set if elements have stored overlap from previous frame.

Definition at line 257 of file aac.h.

MPEG4AudioConfig AACContext::m4ac

Definition at line 255 of file aac.h.

Referenced by aac_decode_frame_int(), aac_decode_init(), apply_dependent_coupling(), apply_independent_coupling(), apply_prediction(), che_configure(), decode_cpe(), decode_extension_payload(), decode_ics(), decode_ics_info(), decode_prediction(), decode_tns(), ff_decode_sbr_extension(), ff_sbr_apply(), get_che(), parse_adts_frame_header(), read_sbr_extension(), and spectral_to_sample().

FFTContext AACContext::mdct

Definition at line 284 of file aac.h.

Referenced by aac_decode_close(), aac_decode_init(), and imdct_and_windowing().

FFTContext AACContext::mdct_ltp

Definition at line 286 of file aac.h.

Referenced by aac_decode_close(), aac_decode_init(), and windowing_and_mdct_ltp().

FFTContext AACContext::mdct_small

Definition at line 285 of file aac.h.

Referenced by aac_decode_close(), aac_decode_init(), and imdct_and_windowing().

VO_MEM_OPERATOR AACContext::mem_operator

Definition at line 31 of file libvo-aacenc.c.

Referenced by aac_encode_init().

enum OCStatus AACContext::output_configured

Definition at line 301 of file aac.h.

Referenced by aac_decode_frame_int(), decode_extension_payload(), output_configure(), and parse_adts_frame_header().

float* AACContext::output_data[MAX_CHANNELS]

Points to each element's 'ret' buffer (PCM output).

Definition at line 296 of file aac.h.

Referenced by aac_decode_frame_int(), and che_configure().

int AACContext::random_state

Definition at line 289 of file aac.h.

Referenced by aac_decode_init(), and decode_spectrum_and_dequant().

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

Definition at line 268 of file aac.h.

Referenced by get_che(), and output_configure().

int AACContext::tags_mapped

Definition at line 269 of file aac.h.

Referenced by aac_decode_frame_int(), and get_che().

float AACContext::temp[128]

Definition at line 299 of file aac.h.

Referenced by imdct_and_windowing().

VO_CODEC_INIT_USERDATA AACContext::user_data

Definition at line 32 of file libvo-aacenc.c.

Referenced by aac_encode_init().

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

• libavcodec/aac.h
• libavcodec/libvo-aacenc.c