aac5773f
 hucm
功能基本完成，接口待打磨
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/*
* Bluetooth low-complexity, subband codec (SBC)
*
* Copyright (C) 2017 Aurelien Jacobs <aurel@gnuage.org>
* Copyright (C) 2008-2010 Nokia Corporation
* Copyright (C) 2004-2010 Marcel Holtmann <marcel@holtmann.org>
* Copyright (C) 2004-2005 Henryk Ploetz <henryk@ploetzli.ch>
* Copyright (C) 2005-2006 Brad Midgley <bmidgley@xmission.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
* miscellaneous SBC tables
*/
#ifndef AVCODEC_SBCDSP_DATA_H
#define AVCODEC_SBCDSP_DATA_H
#include "sbc.h"
#define SBC_PROTO_FIXED_SCALE 16
#define SBC_COS_TABLE_FIXED_SCALE 15
/*
* Constant tables for the use in SIMD optimized analysis filters
* Each table consists of two parts:
* 1. reordered "proto" table
* 2. reordered "cos" table
*
* Due to non-symmetrical reordering, separate tables for "even"
* and "odd" cases are needed
*/
extern const int16_t ff_sbcdsp_analysis_consts_fixed4_simd_even[];
extern const int16_t ff_sbcdsp_analysis_consts_fixed4_simd_odd[];
extern const int16_t ff_sbcdsp_analysis_consts_fixed8_simd_even[];
extern const int16_t ff_sbcdsp_analysis_consts_fixed8_simd_odd[];
#endif /* AVCODEC_SBCDSP_DATA_H */
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