1 /* 2 * Copyright (C) 2011 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 /** 17 ****************************************************************************** 18 * @file M4ChannelCoverter.c 19 * @brief 20 * @note 21 ****************************************************************************** 22 */ 23 24 void MonoTo2I_16( const short *src, 25 short *dst, 26 short n) 27 { 28 short ii; 29 src += n-1; 30 dst += (n*2)-1; 31 32 for (ii = n; ii != 0; ii--){ 33 *dst-- = *src; 34 *dst-- = *src--; 35 } 36 37 return; 38 } 39 40 void From2iToMono_16( const short *src, 41 short *dst, 42 short n) 43 { 44 short ii; 45 long Temp; 46 for (ii = n; ii != 0; ii--){ 47 Temp = (long)*(src++); 48 Temp += (long)*(src++); 49 *(dst++) = (short)(Temp >>1); 50 } 51 52 return; 53 } 54 55
