/* ========================================
 *  SoftClock - SoftClock.h
 *  Copyright (c) airwindows, Airwindows uses the MIT license
 * ======================================== */

#ifndef __SoftClock_H
#include "SoftClock.h"
#endif

void SoftClock::processReplacing(float **inputs, float **outputs, VstInt32 sampleFrames) 
{
    float* in1  =  inputs[0];
    float* in2  =  inputs[1];
    float* out1 = outputs[0];
    float* out2 = outputs[1];

	double overallscale = 1.0;
	overallscale /= 44100.0;
	overallscale *= getSampleRate();
	int bpm = (int)(A*200.99)+40;
	int beatCode = (int)(B*32.99);
	double notes = (double)fmax(((int)(C*16.99))/4.0, 0.125);
	double bpmTarget = (getSampleRate()*60.0)/((double)bpm*notes);
	double swing = D*bpmTarget*0.66666;
	double bigbeat = E*bpmTarget*0.33333;
	//swing makes beats hit LATER, so the One is 0.0
	//bigbeat makes snares hit either on the beat or later
	int beatMax = beatTable[beatCode];
	//only some counts are literal, others are ways to do prime grooves with different subrhythms
	for (int x = 0; x < (beatMax+1); x++) {
		beatAccent[x] = ((double)fabs((double)beatMax-((double)x*2.0)))/(double)(beatMax*1.618033988749894);
		if (x % 2 > 0) beatSwing[x] = 0.0;
		else beatSwing[x] = swing;
	} //this makes the non-accented beats drop down to quiet and back up to half volume
	if (beatCode > 0) beatAccent[1] = 1.0; beatSwing[1] = 0.0; //first note is an accent at full crank
	switch (beatCode)
	{
		case 0:	break; //not used
		case 1:	break; //1
		case 2:	break; //2
		case 3:	break; //3
		case 4: beatAccent[3]=0.9;
			beatSwing[3]=bigbeat; break; //4-22
		case 5:	beatAccent[4]=0.9;
			beatSwing[4]=bigbeat; break; //5-32
		case 6:	beatAccent[4]=0.9;
			beatSwing[4]=bigbeat; break; //6-33
		case 7:	beatAccent[5]=0.9;
			beatSwing[5]=bigbeat; break; //7-43
		case 8:	beatAccent[5]=0.9;
			beatSwing[5]=bigbeat; break; //8-44
		case 9:	beatAccent[4]=0.9; beatAccent[7]=0.8;
			beatSwing[4]=bigbeat; beatSwing[7]=bigbeat; break; //9-333
		case 10: beatAccent[6]=0.9;
			beatSwing[6]=bigbeat; break; //10-55
		case 11: beatAccent[4]=0.9;	beatAccent[7]=0.8;	beatAccent[10]=0.7;
			beatSwing[4]=bigbeat; beatSwing[7]=bigbeat; beatSwing[10]=bigbeat; break; //11-3332
		case 12: beatAccent[5]=0.9;	beatAccent[9]=0.8;
			beatSwing[5]=bigbeat; beatSwing[9]=bigbeat; break; //11-443
		case 13: beatAccent[6]=0.9;	beatAccent[11]=0.8;
			beatSwing[6]=bigbeat; beatSwing[11]=bigbeat; break; //11-551
		case 14: beatAccent[7]=0.9;
			beatSwing[7]=bigbeat; break; //11-65
		case 15: beatAccent[4]=0.9;	beatAccent[7]=0.8;	beatAccent[10]=0.7;
			beatSwing[4]=bigbeat; beatSwing[7]=bigbeat; beatSwing[10]=bigbeat; break; //13-3334
		case 16: beatAccent[9]=0.9;
			beatSwing[9]=bigbeat; break; //16-88
		case 17: beatAccent[5]=0.9;	beatAccent[9]=0.8;
			beatSwing[5]=bigbeat; beatSwing[9]=bigbeat; break; //13-445
		case 18: beatAccent[6]=0.9;	beatAccent[11]=0.8;
			beatSwing[6]=bigbeat; beatSwing[11]=bigbeat; break; //13-553
		case 19: beatAccent[5]=0.9;	beatAccent[9]=0.85;	beatAccent[13]=0.8;	beatAccent[17]=0.75;
			beatSwing[5]=bigbeat; beatSwing[9]=bigbeat; beatSwing[13]=bigbeat; beatSwing[17]=bigbeat; break; //17-44441
		case 20: beatAccent[6]=0.9;	beatAccent[11]=0.8;	beatAccent[16]=0.7;
			beatSwing[6]=bigbeat; beatSwing[11]=bigbeat; beatSwing[16]=bigbeat; break; //17-5552
		case 21: beatAccent[8]=0.9;	beatAccent[15]=0.8;
			beatSwing[8]=bigbeat; beatSwing[15]=bigbeat; break; //17-773
		case 22: beatAccent[9]=0.9;	beatAccent[17]=0.8;
			beatSwing[9]=bigbeat; beatSwing[17]=bigbeat; break; //17-881
		case 23: beatAccent[5]=0.9;	beatAccent[9]=0.85;	beatAccent[13]=0.8;	beatAccent[17]=0.75;
			beatSwing[5]=bigbeat; beatSwing[9]=bigbeat; beatSwing[13]=bigbeat; beatSwing[17]=bigbeat; break; //19-44443
		case 24: beatAccent[9]=0.9;	beatAccent[17]=0.8;
			beatSwing[9]=bigbeat; beatSwing[17]=bigbeat; break; //24-888
		case 25: beatAccent[6]=0.9;	beatAccent[11]=0.8;	beatAccent[16]=0.7;
			beatSwing[6]=bigbeat; beatSwing[11]=bigbeat; beatSwing[16]=bigbeat; break; //19-5554
		case 26: beatAccent[8]=0.9;	beatAccent[15]=0.8;
			beatSwing[8]=bigbeat; beatSwing[15]=bigbeat; break; //19-775
		case 27: beatAccent[9]=0.9;	beatAccent[17]=0.8;
			beatSwing[9]=bigbeat; beatSwing[17]=bigbeat; break; //19-883
		case 28: beatAccent[5]=0.9;	beatAccent[9]=0.85;	beatAccent[13]=0.8;	beatAccent[17]=0.75;	beatAccent[21]=0.7;
			beatSwing[5]=bigbeat; beatSwing[9]=bigbeat; beatSwing[13]=bigbeat; beatSwing[17]=bigbeat; beatSwing[21]=bigbeat; break; //23-444443
		case 29: beatAccent[6]=0.9;	beatAccent[11]=0.8;	beatAccent[16]=0.7;
			beatSwing[6]=bigbeat; beatSwing[11]=bigbeat; beatSwing[16]=bigbeat; break; //23-5558
		case 30: beatAccent[8]=0.9;	beatAccent[15]=0.8;	beatAccent[22]=0.7;
			beatSwing[8]=bigbeat; beatSwing[15]=bigbeat; beatSwing[22]=bigbeat; break; //23-7772
		case 31: beatAccent[9]=0.9;	beatAccent[17]=0.8;
			beatSwing[9]=bigbeat; beatSwing[17]=bigbeat; break; //23-887
		case 32: beatAccent[9]=0.9;	beatAccent[17]=0.8;	beatAccent[25]=0.7;
			beatSwing[9]=bigbeat; beatSwing[17]=bigbeat; beatSwing[25]=bigbeat; break; //32-8888
		default: break;			
	}			
	double accent = 1.0-pow(1.0-F,2);
	double chaseSpeed = ((H*0.00016)+0.000016)/overallscale;
	double rootSpeed = 1.0-(chaseSpeed*((1.0-H)+0.5)*4.0);
	double pulseWidth = ((G*0.2)-((1.0-H)*0.03))/chaseSpeed;
	
    while (--sampleFrames >= 0)
    {
		double inputSampleL = *in1;
		double inputSampleR = *in2;
		if (fabs(inputSampleL)<1.18e-23) inputSampleL = fpdL * 1.18e-17;
		if (fabs(inputSampleR)<1.18e-23) inputSampleR = fpdR * 1.18e-17;
		
		barPos += 1.0;
		if (barPos>bpmTarget) {
			barPos=0.0;
			beatPos++;
			if (beatPos>beatMax) beatPos=1;
		}
		if ((barPos < (pulseWidth+beatSwing[beatPos])) && (barPos > beatSwing[beatPos]))
			inc = (((beatAccent[beatPos]*accent)+(1.0-accent))*chaseSpeed)+(inc*(1.0-chaseSpeed));
		else
			inc *= rootSpeed;
		sinePos += inc;
		if (sinePos > 6.283185307179586) sinePos -= 6.283185307179586;
		inputSampleL = inputSampleR = sin(sin(sinePos)*inc*8.0);
		
		//begin 32 bit stereo floating point dither
		int expon; frexpf((float)inputSampleL, &expon);
		fpdL ^= fpdL << 13; fpdL ^= fpdL >> 17; fpdL ^= fpdL << 5;
		inputSampleL += ((double(fpdL)-uint32_t(0x7fffffff)) * 5.5e-36l * pow(2,expon+62));
		frexpf((float)inputSampleR, &expon);
		fpdR ^= fpdR << 13; fpdR ^= fpdR >> 17; fpdR ^= fpdR << 5;
		inputSampleR += ((double(fpdR)-uint32_t(0x7fffffff)) * 5.5e-36l * pow(2,expon+62));
		//end 32 bit stereo floating point dither
		
		*out1 = inputSampleL;
		*out2 = inputSampleR;

		in1++;
		in2++;
		out1++;
		out2++;
    }
}

void SoftClock::processDoubleReplacing(double **inputs, double **outputs, VstInt32 sampleFrames) 
{
    double* in1  =  inputs[0];
    double* in2  =  inputs[1];
    double* out1 = outputs[0];
    double* out2 = outputs[1];

	double overallscale = 1.0;
	overallscale /= 44100.0;
	overallscale *= getSampleRate();
	int bpm = (int)(A*200.99)+40;
	int beatCode = (int)(B*32.99);
	double notes = (double)fmax(((int)(C*16.99))/4.0, 0.125);
	double bpmTarget = (getSampleRate()*60.0)/((double)bpm*notes);
	double swing = D*bpmTarget*0.66666;
	double bigbeat = E*bpmTarget*0.33333;
	//swing makes beats hit LATER, so the One is 0.0
	//bigbeat makes snares hit either on the beat or later
	int beatMax = beatTable[beatCode];
	//only some counts are literal, others are ways to do prime grooves with different subrhythms
	for (int x = 0; x < (beatMax+1); x++) {
		beatAccent[x] = ((double)fabs((double)beatMax-((double)x*2.0)))/(double)(beatMax*1.618033988749894);
		if (x % 2 > 0) beatSwing[x] = 0.0;
		else beatSwing[x] = swing;
	} //this makes the non-accented beats drop down to quiet and back up to half volume
	if (beatCode > 0) beatAccent[1] = 1.0; beatSwing[1] = 0.0; //first note is an accent at full crank
	switch (beatCode)
	{
		case 0:	break; //not used
		case 1:	break; //1
		case 2:	break; //2
		case 3:	break; //3
		case 4: beatAccent[3]=0.9;
			beatSwing[3]=bigbeat; break; //4-22
		case 5:	beatAccent[4]=0.9;
			beatSwing[4]=bigbeat; break; //5-32
		case 6:	beatAccent[4]=0.9;
			beatSwing[4]=bigbeat; break; //6-33
		case 7:	beatAccent[5]=0.9;
			beatSwing[5]=bigbeat; break; //7-43
		case 8:	beatAccent[5]=0.9;
			beatSwing[5]=bigbeat; break; //8-44
		case 9:	beatAccent[4]=0.9; beatAccent[7]=0.8;
			beatSwing[4]=bigbeat; beatSwing[7]=bigbeat; break; //9-333
		case 10: beatAccent[6]=0.9;
			beatSwing[6]=bigbeat; break; //10-55
		case 11: beatAccent[4]=0.9;	beatAccent[7]=0.8;	beatAccent[10]=0.7;
			beatSwing[4]=bigbeat; beatSwing[7]=bigbeat; beatSwing[10]=bigbeat; break; //11-3332
		case 12: beatAccent[5]=0.9;	beatAccent[9]=0.8;
			beatSwing[5]=bigbeat; beatSwing[9]=bigbeat; break; //11-443
		case 13: beatAccent[6]=0.9;	beatAccent[11]=0.8;
			beatSwing[6]=bigbeat; beatSwing[11]=bigbeat; break; //11-551
		case 14: beatAccent[7]=0.9;
			beatSwing[7]=bigbeat; break; //11-65
		case 15: beatAccent[4]=0.9;	beatAccent[7]=0.8;	beatAccent[10]=0.7;
			beatSwing[4]=bigbeat; beatSwing[7]=bigbeat; beatSwing[10]=bigbeat; break; //13-3334
		case 16: beatAccent[9]=0.9;
			beatSwing[9]=bigbeat; break; //16-88
		case 17: beatAccent[5]=0.9;	beatAccent[9]=0.8;
			beatSwing[5]=bigbeat; beatSwing[9]=bigbeat; break; //13-445
		case 18: beatAccent[6]=0.9;	beatAccent[11]=0.8;
			beatSwing[6]=bigbeat; beatSwing[11]=bigbeat; break; //13-553
		case 19: beatAccent[5]=0.9;	beatAccent[9]=0.85;	beatAccent[13]=0.8;	beatAccent[17]=0.75;
			beatSwing[5]=bigbeat; beatSwing[9]=bigbeat; beatSwing[13]=bigbeat; beatSwing[17]=bigbeat; break; //17-44441
		case 20: beatAccent[6]=0.9;	beatAccent[11]=0.8;	beatAccent[16]=0.7;
			beatSwing[6]=bigbeat; beatSwing[11]=bigbeat; beatSwing[16]=bigbeat; break; //17-5552
		case 21: beatAccent[8]=0.9;	beatAccent[15]=0.8;
			beatSwing[8]=bigbeat; beatSwing[15]=bigbeat; break; //17-773
		case 22: beatAccent[9]=0.9;	beatAccent[17]=0.8;
			beatSwing[9]=bigbeat; beatSwing[17]=bigbeat; break; //17-881
		case 23: beatAccent[5]=0.9;	beatAccent[9]=0.85;	beatAccent[13]=0.8;	beatAccent[17]=0.75;
			beatSwing[5]=bigbeat; beatSwing[9]=bigbeat; beatSwing[13]=bigbeat; beatSwing[17]=bigbeat; break; //19-44443
		case 24: beatAccent[9]=0.9;	beatAccent[17]=0.8;
			beatSwing[9]=bigbeat; beatSwing[17]=bigbeat; break; //24-888
		case 25: beatAccent[6]=0.9;	beatAccent[11]=0.8;	beatAccent[16]=0.7;
			beatSwing[6]=bigbeat; beatSwing[11]=bigbeat; beatSwing[16]=bigbeat; break; //19-5554
		case 26: beatAccent[8]=0.9;	beatAccent[15]=0.8;
			beatSwing[8]=bigbeat; beatSwing[15]=bigbeat; break; //19-775
		case 27: beatAccent[9]=0.9;	beatAccent[17]=0.8;
			beatSwing[9]=bigbeat; beatSwing[17]=bigbeat; break; //19-883
		case 28: beatAccent[5]=0.9;	beatAccent[9]=0.85;	beatAccent[13]=0.8;	beatAccent[17]=0.75;	beatAccent[21]=0.7;
			beatSwing[5]=bigbeat; beatSwing[9]=bigbeat; beatSwing[13]=bigbeat; beatSwing[17]=bigbeat; beatSwing[21]=bigbeat; break; //23-444443
		case 29: beatAccent[6]=0.9;	beatAccent[11]=0.8;	beatAccent[16]=0.7;
			beatSwing[6]=bigbeat; beatSwing[11]=bigbeat; beatSwing[16]=bigbeat; break; //23-5558
		case 30: beatAccent[8]=0.9;	beatAccent[15]=0.8;	beatAccent[22]=0.7;
			beatSwing[8]=bigbeat; beatSwing[15]=bigbeat; beatSwing[22]=bigbeat; break; //23-7772
		case 31: beatAccent[9]=0.9;	beatAccent[17]=0.8;
			beatSwing[9]=bigbeat; beatSwing[17]=bigbeat; break; //23-887
		case 32: beatAccent[9]=0.9;	beatAccent[17]=0.8;	beatAccent[25]=0.7;
			beatSwing[9]=bigbeat; beatSwing[17]=bigbeat; beatSwing[25]=bigbeat; break; //32-8888
		default: break;			
	}			
	double accent = 1.0-pow(1.0-F,2);
	double chaseSpeed = ((H*0.00016)+0.000016)/overallscale;
	double rootSpeed = 1.0-(chaseSpeed*((1.0-H)+0.5)*4.0);
	double pulseWidth = ((G*0.2)-((1.0-H)*0.03))/chaseSpeed;
	
    while (--sampleFrames >= 0)
    {
		double inputSampleL = *in1;
		double inputSampleR = *in2;
		if (fabs(inputSampleL)<1.18e-23) inputSampleL = fpdL * 1.18e-17;
		if (fabs(inputSampleR)<1.18e-23) inputSampleR = fpdR * 1.18e-17;
		
		barPos += 1.0;
		if (barPos>bpmTarget) {
			barPos=0.0;
			beatPos++;
			if (beatPos>beatMax) beatPos=1;
		}
		if ((barPos < (pulseWidth+beatSwing[beatPos])) && (barPos > beatSwing[beatPos]))
			inc = (((beatAccent[beatPos]*accent)+(1.0-accent))*chaseSpeed)+(inc*(1.0-chaseSpeed));
		else
			inc *= rootSpeed;
		sinePos += inc;
		if (sinePos > 6.283185307179586) sinePos -= 6.283185307179586;
		inputSampleL = inputSampleR = sin(sin(sinePos)*inc*8.0);
		
		//begin 64 bit stereo floating point dither
		//int expon; frexp((double)inputSampleL, &expon);
		fpdL ^= fpdL << 13; fpdL ^= fpdL >> 17; fpdL ^= fpdL << 5;
		//inputSampleL += ((double(fpdL)-uint32_t(0x7fffffff)) * 1.1e-44l * pow(2,expon+62));
		//frexp((double)inputSampleR, &expon);
		fpdR ^= fpdR << 13; fpdR ^= fpdR >> 17; fpdR ^= fpdR << 5;
		//inputSampleR += ((double(fpdR)-uint32_t(0x7fffffff)) * 1.1e-44l * pow(2,expon+62));
		//end 64 bit stereo floating point dither
		
		*out1 = inputSampleL;
		*out2 = inputSampleR;

		in1++;
		in2++;
		out1++;
		out2++;
    }
}