T
182 lines
8.0 KiB
C
182 lines
8.0 KiB
C
/*
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* Copyright (C) 2004-2010 NXP Software
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* Copyright (C) 2010 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef _VECTOR_ARITHMETIC_H_
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#define _VECTOR_ARITHMETIC_H_
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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#include "LVM_Types.h"
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/**********************************************************************************
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VARIOUS FUNCTIONS
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***********************************************************************************/
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void LoadConst_16( const LVM_INT16 val,
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LVM_INT16 *dst,
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LVM_INT16 n );
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void LoadConst_32( const LVM_INT32 val,
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LVM_INT32 *dst,
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LVM_INT16 n );
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void Copy_16( const LVM_INT16 *src,
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LVM_INT16 *dst,
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LVM_INT16 n );
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/*********************************************************************************
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* note: In Mult3s_16x16() saturation of result is not taken care when *
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* overflow occurs. *
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* For example when *src = 0x8000, val = *0x8000 *
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* The function gives the output as 0x8000 instead of 0x7fff *
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* This is the only case which will give wrong result. *
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* For more information refer to Vector_Arithmetic.doc in /doc folder *
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*********************************************************************************/
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void Mult3s_16x16( const LVM_INT16 *src,
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const LVM_INT16 val,
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LVM_INT16 *dst,
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LVM_INT16 n);
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/*********************************************************************************
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* note: In Mult3s_32x16() saturation of result is not taken care when *
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* overflow occurs. *
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* For example when *src = 0x8000000, val = *0x8000 *
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* The function gives the output as 0x8000000 instead of 0x7fffffff *
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* This is the only extreme condition which is giving unexpected result *
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* For more information refer to Vector_Arithmetic.doc in /doc folder *
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*********************************************************************************/
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void Mult3s_32x16( const LVM_INT32 *src,
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const LVM_INT16 val,
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LVM_INT32 *dst,
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LVM_INT16 n);
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void DelayMix_16x16( const LVM_INT16 *src,
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LVM_INT16 *delay,
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LVM_INT16 size,
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LVM_INT16 *dst,
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LVM_INT16 *pOffset,
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LVM_INT16 n);
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void DelayWrite_32( const LVM_INT32 *src, /* Source 1, to be delayed */
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LVM_INT32 *delay, /* Delay buffer */
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LVM_UINT16 size, /* Delay size */
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LVM_UINT16 *pOffset, /* Delay offset */
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LVM_INT16 n);
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void Add2_Sat_16x16( const LVM_INT16 *src,
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LVM_INT16 *dst,
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LVM_INT16 n );
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void Add2_Sat_32x32( const LVM_INT32 *src,
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LVM_INT32 *dst,
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LVM_INT16 n );
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void Mac3s_Sat_16x16( const LVM_INT16 *src,
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const LVM_INT16 val,
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LVM_INT16 *dst,
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LVM_INT16 n);
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void Mac3s_Sat_32x16( const LVM_INT32 *src,
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const LVM_INT16 val,
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LVM_INT32 *dst,
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LVM_INT16 n);
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void DelayAllPass_Sat_32x16To32( LVM_INT32 *delay, /* Delay buffer */
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LVM_UINT16 size, /* Delay size */
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LVM_INT16 coeff, /* All pass filter coefficient */
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LVM_UINT16 DelayOffset, /* Simple delay offset */
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LVM_UINT16 *pAllPassOffset, /* All pass filter delay offset */
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LVM_INT32 *dst, /* Source/destination */
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LVM_INT16 n);
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/**********************************************************************************
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SHIFT FUNCTIONS
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***********************************************************************************/
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void Shift_Sat_v16xv16 ( const LVM_INT16 val,
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const LVM_INT16 *src,
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LVM_INT16 *dst,
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LVM_INT16 n);
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void Shift_Sat_v32xv32 ( const LVM_INT16 val,
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const LVM_INT32 *src,
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LVM_INT32 *dst,
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LVM_INT16 n);
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/**********************************************************************************
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AUDIO FORMAT CONVERSION FUNCTIONS
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***********************************************************************************/
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void MonoTo2I_16( const LVM_INT16 *src,
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LVM_INT16 *dst,
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LVM_INT16 n);
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void MonoTo2I_32( const LVM_INT32 *src,
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LVM_INT32 *dst,
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LVM_INT16 n);
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void From2iToMono_32( const LVM_INT32 *src,
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LVM_INT32 *dst,
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LVM_INT16 n);
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void MSTo2i_Sat_16x16( const LVM_INT16 *srcM,
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const LVM_INT16 *srcS,
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LVM_INT16 *dst,
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LVM_INT16 n );
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void From2iToMS_16x16( const LVM_INT16 *src,
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LVM_INT16 *dstM,
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LVM_INT16 *dstS,
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LVM_INT16 n );
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void From2iToMono_16( const LVM_INT16 *src,
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LVM_INT16 *dst,
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LVM_INT16 n);
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void JoinTo2i_32x32( const LVM_INT32 *srcL,
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const LVM_INT32 *srcR,
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LVM_INT32 *dst,
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LVM_INT16 n );
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/**********************************************************************************
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DATA TYPE CONVERSION FUNCTIONS
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***********************************************************************************/
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void Int16LShiftToInt32_16x32(const LVM_INT16 *src,
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LVM_INT32 *dst,
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LVM_INT16 n,
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LVM_INT16 shift );
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void Int32RShiftToInt16_Sat_32x16(const LVM_INT32 *src,
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LVM_INT16 *dst,
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LVM_INT16 n,
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LVM_INT16 shift );
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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/**********************************************************************************/
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#endif /* _VECTOR_ARITHMETIC_H_ */
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/**********************************************************************************/
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