mirror of https://github.com/bsnes-emu/bsnes.git
44 lines
837 B
C++
44 lines
837 B
C++
#pragma once
|
|
|
|
struct ResampleNearest : Resampler {
|
|
ResampleNearest(DSP& dsp) : Resampler(dsp) {}
|
|
|
|
inline auto setFrequency() -> void;
|
|
inline auto clear() -> void;
|
|
inline auto sample() -> void;
|
|
|
|
private:
|
|
double fraction;
|
|
double step;
|
|
};
|
|
|
|
auto ResampleNearest::setFrequency() -> void {
|
|
fraction = 0.0;
|
|
step = dsp.settings.frequency / frequency;
|
|
}
|
|
|
|
auto ResampleNearest::clear() -> void {
|
|
fraction = 0.0;
|
|
}
|
|
|
|
auto ResampleNearest::sample() -> void {
|
|
while(fraction <= 1.0) {
|
|
double channel[dsp.settings.channels];
|
|
|
|
for(auto n : range(dsp.settings.channels)) {
|
|
double a = dsp.buffer.read(n, -1);
|
|
double b = dsp.buffer.read(n, -0);
|
|
|
|
double mu = fraction;
|
|
|
|
channel[n] = mu < 0.5 ? a : b;
|
|
}
|
|
|
|
dsp.write(channel);
|
|
fraction += step;
|
|
}
|
|
|
|
dsp.buffer.rdoffset++;
|
|
fraction -= 1.0;
|
|
}
|