libavcodec/aacsbr.h File Reference

AAC Spectral Band Replication function declarations. More...

#include "get_bits.h"
#include "aac.h"
#include "sbr.h"

Go to the source code of this file.

Functions
av_cold void	ff_aac_sbr_init (void)
	Initialize SBR.
av_cold void	ff_aac_sbr_ctx_init (SpectralBandReplication *sbr)
	Initialize one SBR context.
av_cold void	ff_aac_sbr_ctx_close (SpectralBandReplication *sbr)
	Close one SBR context.
int	ff_decode_sbr_extension (AACContext *ac, SpectralBandReplication *sbr, GetBitContext *gb, int crc, int cnt, int id_aac)
	Decode one SBR element.
void	ff_sbr_apply (AACContext *ac, SpectralBandReplication *sbr, int id_aac, float *L, float *R)
	Apply one SBR element to one AAC element.

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Detailed Description

AAC Spectral Band Replication function declarations.

Author:

Robert Swain ( rob opendot cl )

Definition in file aacsbr.h.

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Function Documentation

av_cold void ff_aac_sbr_ctx_close

(

SpectralBandReplication *

sbr

)

Close one SBR context.

Definition at line 140 of file aacsbr.c.

Referenced by aac_decode_close(), and che_configure().

av_cold void ff_aac_sbr_ctx_init

(

SpectralBandReplication *

sbr

)

Initialize one SBR context.

Definition at line 129 of file aacsbr.c.

Referenced by che_configure().

av_cold void ff_aac_sbr_init

(

void

)

Initialize SBR.

Definition at line 87 of file aacsbr.c.

Referenced by aac_decode_init().

int ff_decode_sbr_extension	(	AACContext *	ac,
		SpectralBandReplication *	sbr,
		GetBitContext *	gb_host,
		int	crc,
		int	cnt,
		int	id_aac
	)

Decode one SBR element.

Decode one SBR element.

Parameters:

	crc	flag indicating the presence of CRC checksum
	cnt	length of TYPE_FIL syntactic element in bytes

Returns:

Returns number of bytes consumed from the TYPE_FIL element.

Definition at line 1045 of file aacsbr.c.

Referenced by decode_extension_payload().

void ff_sbr_apply	(	AACContext *	ac,
		SpectralBandReplication *	sbr,
		int	id_aac,
		float *	L,
		float *	R
	)

Apply one SBR element to one AAC element.

Definition at line 1718 of file aacsbr.c.

Referenced by spectral_to_sample().