Line data    Source code

       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             : /*
      13             :  * This file contains the implementation of functions
      14             :  * WebRtcSpl_MemSetW16()
      15             :  * WebRtcSpl_MemSetW32()
      16             :  * WebRtcSpl_MemCpyReversedOrder()
      17             :  * WebRtcSpl_CopyFromEndW16()
      18             :  * WebRtcSpl_ZerosArrayW16()
      19             :  * WebRtcSpl_ZerosArrayW32()
      20             :  *
      21             :  * The description header can be found in signal_processing_library.h
      22             :  *
      23             :  */
      24             : 
      25             : #include <string.h>
      26             : #include "webrtc/common_audio/signal_processing/include/signal_processing_library.h"
      27             : 
      28             : 
      29           0 : void WebRtcSpl_MemSetW16(int16_t *ptr, int16_t set_value, size_t length)
      30             : {
      31             :     size_t j;
      32           0 :     int16_t *arrptr = ptr;
      33             : 
      34           0 :     for (j = length; j > 0; j--)
      35             :     {
      36           0 :         *arrptr++ = set_value;
      37             :     }
      38           0 : }
      39             : 
      40           0 : void WebRtcSpl_MemSetW32(int32_t *ptr, int32_t set_value, size_t length)
      41             : {
      42             :     size_t j;
      43           0 :     int32_t *arrptr = ptr;
      44             : 
      45           0 :     for (j = length; j > 0; j--)
      46             :     {
      47           0 :         *arrptr++ = set_value;
      48             :     }
      49           0 : }
      50             : 
      51           0 : void WebRtcSpl_MemCpyReversedOrder(int16_t* dest,
      52             :                                    int16_t* source,
      53             :                                    size_t length)
      54             : {
      55             :     size_t j;
      56           0 :     int16_t* destPtr = dest;
      57           0 :     int16_t* sourcePtr = source;
      58             : 
      59           0 :     for (j = 0; j < length; j++)
      60             :     {
      61           0 :         *destPtr-- = *sourcePtr++;
      62             :     }
      63           0 : }
      64             : 
      65           0 : void WebRtcSpl_CopyFromEndW16(const int16_t *vector_in,
      66             :                               size_t length,
      67             :                               size_t samples,
      68             :                               int16_t *vector_out)
      69             : {
      70             :     // Copy the last <samples> of the input vector to vector_out
      71           0 :     WEBRTC_SPL_MEMCPY_W16(vector_out, &vector_in[length - samples], samples);
      72           0 : }
      73             : 
      74           0 : void WebRtcSpl_ZerosArrayW16(int16_t *vector, size_t length)
      75             : {
      76           0 :     WebRtcSpl_MemSetW16(vector, 0, length);
      77           0 : }
      78             : 
      79           0 : void WebRtcSpl_ZerosArrayW32(int32_t *vector, size_t length)
      80             : {
      81           0 :     WebRtcSpl_MemSetW32(vector, 0, length);
      82           0 : }