copy_set_operations.c (2038B)
1 /* 2 * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 /* 12 * This file contains the implementation of functions 13 * WebRtcSpl_MemSetW16() 14 * WebRtcSpl_MemSetW32() 15 * WebRtcSpl_MemCpyReversedOrder() 16 * WebRtcSpl_CopyFromEndW16() 17 * WebRtcSpl_ZerosArrayW16() 18 * WebRtcSpl_ZerosArrayW32() 19 * 20 * The description header can be found in signal_processing_library.h 21 * 22 */ 23 24 #include <string.h> 25 26 #include "common_audio/signal_processing/include/signal_processing_library.h" 27 28 void WebRtcSpl_MemSetW16(int16_t* ptr, int16_t set_value, size_t length) { 29 size_t j; 30 int16_t* arrptr = ptr; 31 32 for (j = length; j > 0; j--) { 33 *arrptr++ = set_value; 34 } 35 } 36 37 void WebRtcSpl_MemSetW32(int32_t* ptr, int32_t set_value, size_t length) { 38 size_t j; 39 int32_t* arrptr = ptr; 40 41 for (j = length; j > 0; j--) { 42 *arrptr++ = set_value; 43 } 44 } 45 46 void WebRtcSpl_MemCpyReversedOrder(int16_t* dest, 47 int16_t* source, 48 size_t length) { 49 size_t j; 50 int16_t* destPtr = dest; 51 int16_t* sourcePtr = source; 52 53 for (j = 0; j < length; j++) { 54 *destPtr-- = *sourcePtr++; 55 } 56 } 57 58 void WebRtcSpl_CopyFromEndW16(const int16_t* vector_in, 59 size_t length, 60 size_t samples, 61 int16_t* vector_out) { 62 // Copy the last <samples> of the input vector to vector_out 63 WEBRTC_SPL_MEMCPY_W16(vector_out, &vector_in[length - samples], samples); 64 } 65 66 void WebRtcSpl_ZerosArrayW16(int16_t* vector, size_t length) { 67 WebRtcSpl_MemSetW16(vector, 0, length); 68 } 69 70 void WebRtcSpl_ZerosArrayW32(int32_t* vector, size_t length) { 71 WebRtcSpl_MemSetW32(vector, 0, length); 72 }