AACEncContext Struct Reference

AAC encoder context. More...

#include <aacenc.h>

Public Member Functions
	DECLARE_ALIGNED (16, FFTSample, output)[2048]
	temporary buffer for MDCT input coefficients
	DECLARE_ALIGNED (16, int, qcoefs)[96]
	quantized coefficients
	DECLARE_ALIGNED (16, float, scoefs)[1024]
	scaled coefficients
Data Fields
PutBitContext	pb
FFTContext	mdct1024
	long (1024 samples) frame transform context
FFTContext	mdct128
	short (128 samples) frame transform context
DSPContext	dsp
int16_t *	samples
	saved preprocessed input
int	samplerate_index
	MPEG-4 samplerate index.
ChannelElement *	cpe
	channel elements
FFPsyContext	psy
struct FFPsyPreprocessContext *	psypp
AACCoefficientsEncoder *	coder
int	cur_channel
int	last_frame
float	lambda

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Detailed Description

AAC encoder context.

Definition at line 50 of file aacenc.h.

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Member Function Documentation

AACEncContext::DECLARE_ALIGNED	(	16	,
		FFTSample	,
		output
	)

temporary buffer for MDCT input coefficients

AACEncContext::DECLARE_ALIGNED	(	16	,
		int	,
		qcoefs
	)

quantized coefficients

AACEncContext::DECLARE_ALIGNED	(	16	,
		float	,
		scoefs
	)

scaled coefficients

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Field Documentation

PutBitContext AACEncContext::pb

Definition at line 51 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(), put_bitstream_info(), and put_ics_info().

FFTContext AACEncContext::mdct1024

long (1024 samples) frame transform context

Definition at line 52 of file aacenc.h.

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

FFTContext AACEncContext::mdct128

short (128 samples) frame transform context

Definition at line 53 of file aacenc.h.

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

DSPContext AACEncContext::dsp

Definition at line 54 of file aacenc.h.

Referenced by aac_encode_init(), and apply_window_and_mdct().

int16_t* AACEncContext::samples

saved preprocessed input

Definition at line 56 of file aacenc.h.

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

int AACEncContext::samplerate_index

MPEG-4 samplerate index.

Definition at line 58 of file aacenc.h.

Referenced by aac_encode_init(), and put_audio_specific_config().

ChannelElement* AACEncContext::cpe

channel elements

Definition at line 60 of file aacenc.h.

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

FFPsyContext AACEncContext::psy

Definition at line 61 of file aacenc.h.

Referenced by aac_encode_end(), aac_encode_frame(), aac_encode_init(), encode_window_bands_info(), search_for_ms(), search_for_quantizers_anmr(), search_for_quantizers_fast(), and search_for_quantizers_twoloop().

struct FFPsyPreprocessContext* AACEncContext::psypp [read]

Definition at line 62 of file aacenc.h.

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

AACCoefficientsEncoder* AACEncContext::coder

Definition at line 63 of file aacenc.h.

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

int AACEncContext::cur_channel

Definition at line 64 of file aacenc.h.

Referenced by aac_encode_frame(), encode_window_bands_info(), search_for_ms(), search_for_quantizers_anmr(), search_for_quantizers_fast(), and search_for_quantizers_twoloop().

int AACEncContext::last_frame

Definition at line 65 of file aacenc.h.

Referenced by aac_encode_frame().

float AACEncContext::lambda

Definition at line 66 of file aacenc.h.

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

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

• libavcodec/aacenc.h