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 /********************************************************************************** 19 20 %created_by: sra % (CM/S) 21 %name: Mac3s_Sat_16x16.c % (CM/S) 22 %version: 1 % (CM/S) 23 %date_created: Fri Nov 13 12:07:13 2009 % (CM/S) 24 25 ***********************************************************************************/ 26 27 /********************************************************************************** 28 INCLUDE FILES 29 ***********************************************************************************/ 30 31 #include "VectorArithmetic.h" 32 #include "LVM_Macros.h" 33 34 /********************************************************************************** 35 FUNCTION Mac3S_16X16 36 ***********************************************************************************/ 37 38 void Mac3s_Sat_16x16( const LVM_INT16 *src, 39 const LVM_INT16 val, 40 LVM_INT16 *dst, 41 LVM_INT16 n) 42 { 43 LVM_INT16 ii; 44 LVM_INT16 srcval; 45 LVM_INT32 Temp,dInVal; 46 47 48 for (ii = n; ii != 0; ii--) 49 { 50 srcval=*src; 51 src++; 52 53 Temp = (srcval *val)>>15; 54 55 dInVal = (LVM_INT32)*dst; 56 57 Temp = Temp + dInVal; 58 59 if (Temp > 0x00007FFF) 60 { 61 *dst = 0x7FFF; 62 } 63 else if (Temp < -0x00008000) 64 { 65 *dst = - 0x8000; 66 } 67 else 68 { 69 *dst = (LVM_INT16)Temp; 70 } 71 72 dst++; 73 } 74 75 return; 76 } 77 78 /**********************************************************************************/ 79 80 81 82
