1 /* 2 * Copyright (C) 2004-2010 NXP Software 3 * Copyright (C) 2010 The Android Open Source Project 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 18 #ifndef _VECTOR_ARITHMETIC_H_ 19 #define _VECTOR_ARITHMETIC_H_ 20 21 #include "LVM_Types.h" 22 23 /********************************************************************************** 24 VARIOUS FUNCTIONS 25 ***********************************************************************************/ 26 27 void LoadConst_Float( const LVM_FLOAT val, 28 LVM_FLOAT *dst, 29 LVM_INT16 n ); 30 31 void Copy_Float( const LVM_FLOAT *src, 32 LVM_FLOAT *dst, 33 LVM_INT16 n ); 34 #ifdef SUPPORT_MC 35 void Copy_Float_Mc_Stereo( const LVM_FLOAT *src, 36 LVM_FLOAT *dst, 37 LVM_INT16 NrFrames, 38 LVM_INT32 NrChannels); 39 void Copy_Float_Stereo_Mc( const LVM_FLOAT *src, 40 LVM_FLOAT *StereoOut, 41 LVM_FLOAT *dst, 42 LVM_INT16 NrFrames, 43 LVM_INT32 NrChannels); 44 #endif 45 46 /********************************************************************************* 47 * note: In Mult3s_16x16() saturation of result is not taken care when * 48 * overflow occurs. * 49 * For example when *src = 0x8000, val = *0x8000 * 50 * The function gives the output as 0x8000 instead of 0x7fff * 51 * This is the only case which will give wrong result. * 52 * For more information refer to Vector_Arithmetic.doc in /doc folder * 53 *********************************************************************************/ 54 void Mult3s_Float( const LVM_FLOAT *src, 55 const LVM_FLOAT val, 56 LVM_FLOAT *dst, 57 LVM_INT16 n); 58 59 /********************************************************************************* 60 * note: In Mult3s_32x16() saturation of result is not taken care when * 61 * overflow occurs. * 62 * For example when *src = 0x8000000, val = *0x8000 * 63 * The function gives the output as 0x8000000 instead of 0x7fffffff * 64 * This is the only extreme condition which is giving unexpected result * 65 * For more information refer to Vector_Arithmetic.doc in /doc folder * 66 *********************************************************************************/ 67 void Mult3s_32x16( const LVM_INT32 *src, 68 const LVM_INT16 val, 69 LVM_INT32 *dst, 70 LVM_INT16 n); 71 void DelayMix_Float(const LVM_FLOAT *src, /* Source 1, to be delayed */ 72 LVM_FLOAT *delay, /* Delay buffer */ 73 LVM_INT16 size, /* Delay size */ 74 LVM_FLOAT *dst, /* Source/destination */ 75 LVM_INT16 *pOffset, /* Delay offset */ 76 LVM_INT16 n) ; /* Number of stereo samples */ 77 void DelayWrite_32( const LVM_INT32 *src, /* Source 1, to be delayed */ 78 LVM_INT32 *delay, /* Delay buffer */ 79 LVM_UINT16 size, /* Delay size */ 80 LVM_UINT16 *pOffset, /* Delay offset */ 81 LVM_INT16 n); 82 void Add2_Sat_Float( const LVM_FLOAT *src, 83 LVM_FLOAT *dst, 84 LVM_INT16 n ); 85 void Mac3s_Sat_Float( const LVM_FLOAT *src, 86 const LVM_FLOAT val, 87 LVM_FLOAT *dst, 88 LVM_INT16 n); 89 void DelayAllPass_Sat_32x16To32( LVM_INT32 *delay, /* Delay buffer */ 90 LVM_UINT16 size, /* Delay size */ 91 LVM_INT16 coeff, /* All pass filter coefficient */ 92 LVM_UINT16 DelayOffset, /* Simple delay offset */ 93 LVM_UINT16 *pAllPassOffset, /* All pass filter delay offset */ 94 LVM_INT32 *dst, /* Source/destination */ 95 LVM_INT16 n); 96 97 /********************************************************************************** 98 SHIFT FUNCTIONS 99 ***********************************************************************************/ 100 void Shift_Sat_Float (const LVM_INT16 val, 101 const LVM_FLOAT *src, 102 LVM_FLOAT *dst, 103 LVM_INT16 n); 104 /********************************************************************************** 105 AUDIO FORMAT CONVERSION FUNCTIONS 106 ***********************************************************************************/ 107 void MonoTo2I_Float( const LVM_FLOAT *src, 108 LVM_FLOAT *dst, 109 LVM_INT16 n); 110 void From2iToMono_Float( const LVM_FLOAT *src, 111 LVM_FLOAT *dst, 112 LVM_INT16 n); 113 #ifdef SUPPORT_MC 114 void FromMcToMono_Float(const LVM_FLOAT *src, 115 LVM_FLOAT *dst, 116 LVM_INT16 NrFrames, 117 LVM_INT16 NrChannels); 118 #endif 119 void MSTo2i_Sat_Float( const LVM_FLOAT *srcM, 120 const LVM_FLOAT *srcS, 121 LVM_FLOAT *dst, 122 LVM_INT16 n ); 123 void From2iToMS_Float( const LVM_FLOAT *src, 124 LVM_FLOAT *dstM, 125 LVM_FLOAT *dstS, 126 LVM_INT16 n ); 127 void JoinTo2i_Float( const LVM_FLOAT *srcL, 128 const LVM_FLOAT *srcR, 129 LVM_FLOAT *dst, 130 LVM_INT16 n ); 131 132 /********************************************************************************** 133 DATA TYPE CONVERSION FUNCTIONS 134 ***********************************************************************************/ 135 136 void Int16LShiftToInt32_16x32(const LVM_INT16 *src, 137 LVM_INT32 *dst, 138 LVM_INT16 n, 139 LVM_INT16 shift ); 140 141 void Int32RShiftToInt16_Sat_32x16(const LVM_INT32 *src, 142 LVM_INT16 *dst, 143 LVM_INT16 n, 144 LVM_INT16 shift ); 145 146 /**********************************************************************************/ 147 148 #endif /* _VECTOR_ARITHMETIC_H_ */ 149 150 /**********************************************************************************/ 151