AACContext Struct Reference

main AAC context More...

#include <aac.h>

Public Member Functions
	DECLARE_ALIGNED (16, float, buf_mdct)[1024]
	DECLARE_ALIGNED (16, float, temp)[128]
Data Fields
AVCodecContext *	avctx
MPEG4AudioConfig	m4ac
int	is_saved
	Set if elements have stored overlap from previous frame.
DynamicRangeControl	che_drc
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
FFTContext	mdct
FFTContext	mdct_small
DSPContext	dsp
int	random_state
float *	output_data [MAX_CHANNELS]
	Points to each element's 'ret' buffer (PCM output).
float	add_bias
	offset for dsp.float_to_int16
float	sf_scale
	Pre-scale for correct IMDCT and dsp.float_to_int16.
int	sf_offset
	offset into pow2sf_tab as appropriate for dsp.float_to_int16
enum OCStatus	output_configured

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Detailed Description

main AAC context

Definition at line 237 of file aac.h.

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Member Function Documentation

AACContext::DECLARE_ALIGNED	(	16	,
		float	,
		temp
	)

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Field Documentation

AVCodecContext* AACContext::avctx

Definition at line 238 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_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().

MPEG4AudioConfig AACContext::m4ac

Definition at line 240 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().

int AACContext::is_saved

Set if elements have stored overlap from previous frame.

Definition at line 242 of file aac.h.

DynamicRangeControl AACContext::che_drc

Definition at line 243 of file aac.h.

Referenced by decode_extension_payload().

enum OCStatus AACContext::output_configured

Definition at line 286 of file aac.h.

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

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

• libavcodec/aac.h