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SPU2: Remove unused Lowpass files

This commit is contained in:
Christian Kenny 2021-07-21 14:45:58 -04:00 committed by refractionpcsx2
parent 40da5697c5
commit cf3d5bc040
5 changed files with 0 additions and 145 deletions
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2
pcsx2/CMakeLists.txt
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@ -242,7 +242,6 @@ set(pcsx2SPU2Sources
SPU2/Debug.cpp
SPU2/DplIIdecoder.cpp
SPU2/Dma.cpp
SPU2/Lowpass.cpp
SPU2/Mixer.cpp
SPU2/spu2.cpp
SPU2/ReadInput.cpp
@ -276,7 +275,6 @@ set(pcsx2SPU2Headers
SPU2/Dma.h
SPU2/Global.h
SPU2/interpolate_table.h
SPU2/Lowpass.h
SPU2/Mixer.h
SPU2/spu2.h
SPU2/regs.h

93
pcsx2/SPU2/Lowpass.cpp
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@ -1,93 +0,0 @@
/* PCSX2 - PS2 Emulator for PCs
* Copyright (C) 2002-2020 PCSX2 Dev Team
*
* PCSX2 is free software: you can redistribute it and/or modify it under the terms
* of the GNU Lesser General Public License as published by the Free Software Found-
* ation, either version 3 of the License, or (at your option) any later version.
*
* PCSX2 is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with PCSX2.
* If not, see <http://www.gnu.org/licenses/>.
*/
#include "PrecompiledHeader.h"
#include "Global.h"
#include "Lowpass.h"
#include <math.h>
#include <float.h>
template <typename FloatType>
__forceinline LowPassFilter<FloatType>::LowPassFilter(FloatType freq, FloatType srate)
{
typedef FloatType FT;
FloatType omega = (FT)2.0 * freq / srate;
static const FloatType g = (FT)1.0;
// calculating coefficients:
FloatType k, p, q, a;
FloatType a0, a1, a2, a3, a4;
k = ((FT)4.0 * g - (FT)3.0) / (g + (FT)1.0);
p = (FT)1.0 - (FT)0.25 * k;
p *= p;
// LP:
a = (FT)1.0 / (tan((FT)0.5 * omega) * ((FT)1.0 + p));
p = (FT)1.0 + a;
q = (FT)1.0 - a;
a0 = (FT)1.0 / (k + p * p * p * p);
a1 = (FT)4.0 * (k + p * p * p * q);
a2 = (FT)6.0 * (k + p * p * q * q);
a3 = (FT)4.0 * (k + p * q * q * q);
a4 = (k + q * q * q * q);
p = a0 * (k + (FT)1.0);
coef[0] = p;
coef[1] = (FT)4.0 * p;
coef[2] = (FT)6.0 * p;
coef[3] = (FT)4.0 * p;
coef[4] = p;
coef[5] = -a1 * a0;
coef[6] = -a2 * a0;
coef[7] = -a3 * a0;
coef[8] = -a4 * a0;
}
// Processes a single sample into the LPF.
template <typename FloatType>
__forceinline FloatType LowPassFilter<FloatType>::sample(FloatType inval)
{
const FloatType out = (coef[0] * inval) + d[0];
d[0] = (coef[1] * inval) + (coef[5] * out) + d[1];
d[1] = (coef[2] * inval) + (coef[6] * out) + d[2];
d[2] = (coef[3] * inval) + (coef[7] * out) + d[3];
d[3] = (coef[4] * inval) + (coef[8] * out);
return out;
}
LowPassFilter32::LowPassFilter32(float freq, float srate)
: impl_lpf(freq, srate)
{
}
LowPassFilter64::LowPassFilter64(double freq, double srate)
: impl_lpf(freq, srate)
{
}
float LowPassFilter32::sample(float inval)
{
return impl_lpf.sample(inval);
}
double LowPassFilter64::sample(double inval)
{
return impl_lpf.sample(inval);
}

42
pcsx2/SPU2/Lowpass.h
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@ -1,42 +0,0 @@
/* PCSX2 - PS2 Emulator for PCs
* Copyright (C) 2002-2020 PCSX2 Dev Team
*
* PCSX2 is free software: you can redistribute it and/or modify it under the terms
* of the GNU Lesser General Public License as published by the Free Software Found-
* ation, either version 3 of the License, or (at your option) any later version.
*
* PCSX2 is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with PCSX2.
* If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
template <typename FloatType>
struct LowPassFilter
{
FloatType coef[9];
FloatType d[4];
LowPassFilter(FloatType freq, FloatType srate);
FloatType sample(FloatType inval);
};
struct LowPassFilter32
{
LowPassFilter<float> impl_lpf;
LowPassFilter32(float freq, float srate);
float sample(float inval);
};
struct LowPassFilter64
{
LowPassFilter<double> impl_lpf;
LowPassFilter64(double freq, double srate);
double sample(double inval);
};

2
pcsx2/pcsx2.vcxproj
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@ -340,7 +340,6 @@
<ClCompile Include="SPU2\RegLog.cpp" />
<ClCompile Include="SPU2\SndOut_Portaudio.cpp" />
<ClCompile Include="SPU2\wavedump_wav.cpp" />
<ClCompile Include="SPU2\Lowpass.cpp" />
<ClCompile Include="SPU2\SndOut.cpp" />
<ClCompile Include="SPU2\Timestretcher.cpp" />
<ClCompile Include="SPU2\Windows\SndOut_waveOut.cpp" />
@ -775,7 +774,6 @@
<ClInclude Include="SPU2\Config.h" />
<ClInclude Include="SPU2\Global.h" />
<ClInclude Include="SPU2\interpolate_table.h" />
<ClInclude Include="SPU2\Lowpass.h" />
<ClInclude Include="SPU2\SndOut.h" />
<ClInclude Include="SPU2\spdif.h" />
<ClInclude Include="SPU2\defs.h" />

6
pcsx2/pcsx2.vcxproj.filters
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@ -1059,9 +1059,6 @@
<ClCompile Include="SPU2\Mixer.cpp">
<Filter>System\Ps2\SPU2</Filter>
</ClCompile>
<ClCompile Include="SPU2\Lowpass.cpp">
<Filter>System\Ps2\SPU2</Filter>
</ClCompile>
<ClCompile Include="SPU2\Windows\Config.cpp">
<Filter>System\Ps2\SPU2</Filter>
</ClCompile>
@ -2098,9 +2095,6 @@
<ClInclude Include="SPU2\interpolate_table.h">
<Filter>System\Ps2\SPU2</Filter>
</ClInclude>
<ClInclude Include="SPU2\Lowpass.h">
<Filter>System\Ps2\SPU2</Filter>
</ClInclude>
<ClInclude Include="SPU2\Config.h">
<Filter>System\Ps2\SPU2</Filter>
</ClInclude>