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 INCLUDE FILES 20 ***********************************************************************************/ 21 22 #include "VectorArithmetic.h" 23 24 /********************************************************************************** 25 FUNCTION DelayMix_16x16 26 ***********************************************************************************/ 27 28 void DelayWrite_32(const LVM_INT32 *src, /* Source 1, to be delayed */ 29 LVM_INT32 *delay, /* Delay buffer */ 30 LVM_UINT16 size, /* Delay size */ 31 LVM_UINT16 *pOffset, /* Delay offset */ 32 LVM_INT16 n) /* Number of samples */ 33 { 34 LVM_INT16 i; 35 LVM_INT16 Offset = (LVM_INT16)*pOffset; 36 37 for (i=0; i<n; i++) 38 { 39 delay[Offset] = *src; 40 Offset++; 41 src++; 42 43 /* Make the delay buffer a circular buffer */ 44 if (Offset >= size) 45 { 46 Offset = 0; 47 } 48 } 49 50 /* Update the offset */ 51 *pOffset = (LVM_UINT16)Offset; 52 53 return; 54 } 55 56 /**********************************************************************************/ 57 58
