mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-11-26 19:01:44 +02:00
52 lines
1.9 KiB
C
52 lines
1.9 KiB
C
|
/*
|
||
|
|
* AAC Spectral Band Replication function declarations
|
||
|
|
* Copyright (c) 2008-2009 Robert Swain ( rob opendot cl )
|
||
|
|
* Copyright (c) 2010 Alex Converse <alex.converse@gmail.com>
|
||
|
|
*
|
||
|
|
* This file is part of FFmpeg.
|
||
|
|
*
|
||
|
|
* FFmpeg is free software; you can redistribute it and/or
|
||
|
|
* modify it under the terms of the GNU Lesser General Public
|
||
|
|
* License as published by the Free Software Foundation; either
|
||
|
|
* version 2.1 of the License, or (at your option) any later version.
|
||
|
|
*
|
||
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
||
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||
|
|
* Lesser General Public License for more details.
|
||
|
|
*
|
||
|
|
* You should have received a copy of the GNU Lesser General Public
|
||
|
|
* License along with FFmpeg; if not, write to the Free Software
|
||
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
||
|
|
*/
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @file libavcodec/aacsbr.h
|
||
|
|
* AAC Spectral Band Replication function declarations
|
||
|
|
* @author Robert Swain ( rob opendot cl )
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef AVCODEC_AACSBR_H
|
||
|
|
#define AVCODEC_AACSBR_H
|
||
|
|
|
||
|
|
#include "get_bits.h"
|
||
|
|
#include "aac.h"
|
||
|
|
#include "sbr.h"
|
||
|
|
|
||
|
|
/** Initialize SBR. */
|
||
|
|
av_cold void ff_aac_sbr_init(void);
|
||
|
|
/** Initialize one SBR context. */
|
||
|
|
av_cold void ff_aac_sbr_ctx_init(SpectralBandReplication *sbr);
|
||
|
|
/** Close one SBR context. */
|
||
|
|
av_cold void ff_aac_sbr_ctx_close(SpectralBandReplication *sbr);
|
||
|
|
/** Decode one SBR element. */
|
||
|
|
int ff_decode_sbr_extension(AACContext *ac, SpectralBandReplication *sbr,
|
||
|
|
GetBitContext *gb, int crc, int cnt, int id_aac);
|
||
|
|
/** Dequantized all channels in one SBR element. */
|
||
|
|
void ff_sbr_dequant(AACContext *ac, SpectralBandReplication *sbr, int id_aac);
|
||
|
|
/** Apply dequantized SBR to a single AAC channel. */
|
||
|
|
void ff_sbr_apply(AACContext *ac, SpectralBandReplication *sbr, int ch,
|
||
|
|
const float* in, float* out);
|
||
|
|
|
||
|
|
#endif /* AVCODEC_AACSBR_H */
|