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33 lines
747 B
33 lines
747 B
4 years ago
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#include "decimator.h"
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using namespace daisysp;
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void Decimator::Init()
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{
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downsample_factor_ = 1.0f;
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bitcrush_factor_ = 0.0f;
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downsampled_ = 0.0f;
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bitcrushed_ = 0.0f;
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inc_ = 0;
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threshold_ = 0;
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}
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float Decimator::Process(float input)
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{
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int32_t temp;
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//downsample
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threshold_ = (uint32_t)((downsample_factor_ * downsample_factor_) * 96.0f);
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inc_ += 1;
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if(inc_ > threshold_)
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{
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inc_ = 0;
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downsampled_ = input;
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}
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//bitcrush
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temp = (int32_t)(downsampled_ * 65536.0f);
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temp >>= bits_to_crush_; // shift off
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temp <<= bits_to_crush_; // move back with zeros
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bitcrushed_ = (float)temp / 65536.0f;
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return bitcrushed_;
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}
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