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https://github.com/jhbruhn/eurorack.git
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45 lines
1.1 KiB
C++
45 lines
1.1 KiB
C++
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#include "processor.h"
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#include "stmlib/stmlib.h"
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#include <math.h>
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using namespace stereo_mix;
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const int kVolumeFilterValue = 4095;
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void Processor::Process(int16_t cvs[], uint16_t* outs)
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{
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uint32_t value_l;
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uint32_t value_r;
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uint16_t pan_pot = (pan_offset + 32767L) >> (16 - 12); // adc is only 12 bit anyways
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uint16_t vol_pot = (volume_offset) >> (16 - 12);
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int16_t pan_cv = cvs[0] >> (16 - 12);
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int16_t vol_cv = cvs[1] >> (16 - 12);
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int32_t pan = pan_pot + pan_cv;
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int32_t vol = vol_pot + vol_cv;
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CONSTRAIN(pan, 0, (1 << 12) - 1);
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CONSTRAIN(vol, 0, (1 << 12) - 1);
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if (mute) {
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vol = 0;
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}
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if (vol > previous_vol + kVolumeFilterValue) {
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vol = previous_vol + kVolumeFilterValue;
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} else if (vol < previous_vol - kVolumeFilterValue) {
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vol = previous_vol - kVolumeFilterValue;
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}
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CONSTRAIN(pan, 0, (1 << 12) - 1);
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CONSTRAIN(vol, 0, (1 << 12) - 1);
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previous_vol = vol;
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// leds.set_intensity(i, vol >> 4);
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value_l = (lut_left_sin_pan[pan] * lut_linear_to_exp[vol]) >> 16;
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value_r = (lut_right_cos_pan[pan] * lut_linear_to_exp[vol]) >> 16;
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outs[0] = value_r;
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outs[1] = value_l;
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}
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