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SourMesen
e391fd8f9a
* Code: Add auto-formatting rules for C++ projects (clang-format) and enforce code style via "clang-format" and "dotnet format" * fix ui format warnings
23 lines
840 B
C++
23 lines
840 B
C++
#include "pch.h"
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#include "StereoPanningFilter.h"
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#include <cmath>
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void StereoPanningFilter::UpdateFactors(double angle)
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{
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_leftChannelFactor = _baseFactor * (std::cos(angle) - std::sin(angle));
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_rightChannelFactor = _baseFactor * (std::cos(angle) + std::sin(angle));
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}
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void StereoPanningFilter::ApplyFilter(int16_t* stereoBuffer, size_t sampleCount, uint32_t angle)
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{
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constexpr double PI = 3.14159265358979323846;
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angle = (uint32_t)(angle / 180.0 * PI);
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UpdateFactors(angle);
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for(size_t i = 0; i < sampleCount * 2; i += 2) {
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int16_t leftSample = stereoBuffer[i];
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int16_t rightSample = stereoBuffer[i + 1];
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stereoBuffer[i] = (int16_t)((_leftChannelFactor * leftSample + _leftChannelFactor * rightSample) / 2);
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stereoBuffer[i + 1] = (int16_t)((_rightChannelFactor * rightSample + _rightChannelFactor * leftSample) / 2);
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}
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} |