1/* 2 * AAC Spectral Band Replication function declarations 3 * Copyright (c) 2008-2009 Robert Swain ( rob opendot cl ) 4 * Copyright (c) 2010 Alex Converse <alex.converse@gmail.com> 5 * 6 * This file is part of FFmpeg. 7 * 8 * FFmpeg is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU Lesser General Public 10 * License as published by the Free Software Foundation; either 11 * version 2.1 of the License, or (at your option) any later version. 12 * 13 * FFmpeg is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 * Lesser General Public License for more details. 17 * 18 * You should have received a copy of the GNU Lesser General Public 19 * License along with FFmpeg; if not, write to the Free Software 20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 21 */ 22 23/** 24 * @file 25 * AAC Spectral Band Replication function declarations 26 * @author Robert Swain ( rob opendot cl ) 27 */ 28 29#ifndef AVCODEC_AACSBR_H 30#define AVCODEC_AACSBR_H 31 32#include "get_bits.h" 33#include "aac.h" 34#include "sbr.h" 35 36/** Initialize SBR. */ 37av_cold void ff_aac_sbr_init(void); 38/** Initialize one SBR context. */ 39av_cold void ff_aac_sbr_ctx_init(SpectralBandReplication *sbr); 40/** Close one SBR context. */ 41av_cold void ff_aac_sbr_ctx_close(SpectralBandReplication *sbr); 42/** Decode one SBR element. */ 43int ff_decode_sbr_extension(AACContext *ac, SpectralBandReplication *sbr, 44 GetBitContext *gb, int crc, int cnt, int id_aac); 45/** Apply one SBR element to one AAC element. */ 46void ff_sbr_apply(AACContext *ac, SpectralBandReplication *sbr, int id_aac, 47 float* L, float *R); 48 49#endif /* AVCODEC_AACSBR_H */ 50