mirror of https://github.com/bsnes-emu/bsnes.git
45 lines
849 B
C++
Executable File
45 lines
849 B
C++
Executable File
#ifdef NALL_DSP_INTERNAL_HPP
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struct ResampleCosine : Resampler {
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inline void setFrequency();
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inline void clear();
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inline void sample();
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ResampleCosine(DSP &dsp) : Resampler(dsp) {}
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real fraction;
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real step;
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};
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void ResampleCosine::setFrequency() {
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fraction = 0.0;
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step = dsp.settings.frequency / frequency;
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}
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void ResampleCosine::clear() {
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fraction = 0.0;
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}
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void ResampleCosine::sample() {
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while(fraction <= 1.0) {
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real channel[dsp.settings.channels];
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for(unsigned n = 0; n < dsp.settings.channels; n++) {
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real a = dsp.buffer.read(n, -1);
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real b = dsp.buffer.read(n, -0);
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real mu = fraction;
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mu = (1.0 - cos(mu * 3.14159265)) / 2.0;
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channel[n] = a * (1.0 - mu) + b * mu;
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}
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dsp.write(channel);
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fraction += step;
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}
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dsp.buffer.rdoffset++;
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fraction -= 1.0;
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}
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#endif
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