100 lines
2.5 KiB
C++
100 lines
2.5 KiB
C++
|
/*
|
||
|
|
* Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
|
||
|
|
*
|
||
|
|
* Use of this source code is governed by a BSD-style license
|
||
|
|
* that can be found in the LICENSE file in the root of the source
|
||
|
|
* tree. An additional intellectual property rights grant can be found
|
||
|
|
* in the file PATENTS. All contributing project authors may
|
||
|
|
* be found in the AUTHORS file in the root of the source tree.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "utility.h"
|
||
|
|
|
||
|
|
#include "module.h"
|
||
|
|
#include "trace.h"
|
||
|
|
|
||
|
|
namespace webrtc
|
||
|
|
{
|
||
|
|
|
||
|
|
namespace voe
|
||
|
|
{
|
||
|
|
|
||
|
|
void Utility::MixWithSat(WebRtc_Word16 target[],
|
||
|
|
const WebRtc_Word16 source[],
|
||
|
|
WebRtc_UWord16 len)
|
||
|
|
{
|
||
|
|
WebRtc_Word32 temp(0);
|
||
|
|
for (int i = 0; i < len; i++)
|
||
|
|
{
|
||
|
|
temp = source[i] + target[i];
|
||
|
|
if (temp > 32767)
|
||
|
|
target[i] = 32767;
|
||
|
|
else if (temp < -32768)
|
||
|
|
target[i] = -32768;
|
||
|
|
else
|
||
|
|
target[i] = (WebRtc_Word16) temp;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void Utility::MixSubtractWithSat(WebRtc_Word16 target[],
|
||
|
|
const WebRtc_Word16 source[],
|
||
|
|
WebRtc_UWord16 len)
|
||
|
|
{
|
||
|
|
WebRtc_Word32 temp(0);
|
||
|
|
for (int i = 0; i < len; i++)
|
||
|
|
{
|
||
|
|
temp = target[i] - source[i];
|
||
|
|
if (temp > 32767)
|
||
|
|
target[i] = 32767;
|
||
|
|
else if (temp < -32768)
|
||
|
|
target[i] = -32768;
|
||
|
|
else
|
||
|
|
target[i] = (WebRtc_Word16) temp;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void Utility::MixAndScaleWithSat(WebRtc_Word16 target[],
|
||
|
|
const WebRtc_Word16 source[], float scale,
|
||
|
|
WebRtc_UWord16 len)
|
||
|
|
{
|
||
|
|
WebRtc_Word32 temp(0);
|
||
|
|
for (int i = 0; i < len; i++)
|
||
|
|
{
|
||
|
|
temp = (WebRtc_Word32) (target[i] + scale * source[i]);
|
||
|
|
if (temp > 32767)
|
||
|
|
target[i] = 32767;
|
||
|
|
else if (temp < -32768)
|
||
|
|
target[i] = -32768;
|
||
|
|
else
|
||
|
|
target[i] = (WebRtc_Word16) temp;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void Utility::Scale(WebRtc_Word16 vector[], float scale, WebRtc_UWord16 len)
|
||
|
|
{
|
||
|
|
for (int i = 0; i < len; i++)
|
||
|
|
{
|
||
|
|
vector[i] = (WebRtc_Word16) (scale * vector[i]);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void Utility::ScaleWithSat(WebRtc_Word16 vector[], float scale,
|
||
|
|
WebRtc_UWord16 len)
|
||
|
|
{
|
||
|
|
WebRtc_Word32 temp(0);
|
||
|
|
for (int i = 0; i < len; i++)
|
||
|
|
{
|
||
|
|
temp = (WebRtc_Word32) (scale * vector[i]);
|
||
|
|
if (temp > 32767)
|
||
|
|
vector[i] = 32767;
|
||
|
|
else if (temp < -32768)
|
||
|
|
vector[i] = -32768;
|
||
|
|
else
|
||
|
|
vector[i] = (WebRtc_Word16) temp;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
} // namespace voe
|
||
|
|
|
||
|
|
} // namespace webrtc
|