DelayWrite_32.c revision 2c8e5cab3faa6d360e222b7a6c40a80083d021ac
12c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent/* 22c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent * Copyright (C) 2004-2010 NXP Software 32c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent * Copyright (C) 2010 The Android Open Source Project 42c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent * 52c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent * Licensed under the Apache License, Version 2.0 (the "License"); 62c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent * you may not use this file except in compliance with the License. 72c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent * You may obtain a copy of the License at 82c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent * 92c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent * http://www.apache.org/licenses/LICENSE-2.0 102c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent * 112c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent * Unless required by applicable law or agreed to in writing, software 122c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent * distributed under the License is distributed on an "AS IS" BASIS, 132c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 142c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent * See the License for the specific language governing permissions and 152c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent * limitations under the License. 162c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent */ 172c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent 182c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent/************************************************************************/ 192c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent/* */ 202c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent/* Project:: */ 212c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent/* $Author: beq07716 $*/ 222c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent/* $Revision: 1000 $*/ 232c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent/* $Date: 2010-06-28 13:08:20 +0200 (Mon, 28 Jun 2010) $*/ 242c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent/* */ 252c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent/************************************************************************/ 262c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent 272c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent/********************************************************************************** 282c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent INCLUDE FILES 292c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent***********************************************************************************/ 302c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent 312c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent#include "VectorArithmetic.h" 322c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent 332c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent/********************************************************************************** 342c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent FUNCTION DelayMix_16x16 352c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent***********************************************************************************/ 362c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent 372c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurentvoid DelayWrite_32(const LVM_INT32 *src, /* Source 1, to be delayed */ 382c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent LVM_INT32 *delay, /* Delay buffer */ 392c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent LVM_UINT16 size, /* Delay size */ 402c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent LVM_UINT16 *pOffset, /* Delay offset */ 412c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent LVM_INT16 n) /* Number of samples */ 422c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent{ 432c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent LVM_INT16 i; 442c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent LVM_INT16 Offset = (LVM_INT16)*pOffset; 452c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent 462c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent for (i=0; i<n; i++) 472c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent { 482c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent delay[Offset] = *src; 492c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent Offset++; 502c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent src++; 512c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent 522c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent /* Make the delay buffer a circular buffer */ 532c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent if (Offset >= size) 542c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent { 552c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent Offset = 0; 562c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent } 572c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent } 582c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent 592c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent /* Update the offset */ 602c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent *pOffset = (LVM_UINT16)Offset; 612c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent 622c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent return; 632c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent} 642c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent 652c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent/**********************************************************************************/ 662c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent 67