/*-----------------------------------------------------------------------------

© 1999, Steinberg Soft und Hardware GmbH, All Rights Reserved

-----------------------------------------------------------------------------*/

#include "AGain.hpp"

//-----------------------------------------------------------------------------
AGain::AGain(audioMasterCallback audioMaster)
	: AudioEffectX(audioMaster, 1, 1)	// 1 program, 1 parameter only
{
	fGain = 1.;				// default to 0 dB
	setNumInputs(2);		// stereo in
	setNumOutputs(2);		// stereo out
	setUniqueID('Gain');	// identify
	canMono();				// makes sense to feed both inputs with the same signal
	canProcessReplacing();	// supports both accumulating and replacing output
	strcpy(programName, "Default");	// default program name
}

//-----------------------------------------------------------------------------------------
AGain::~AGain()
{
	// nothing to do here
}

//-----------------------------------------------------------------------------------------
void AGain::setProgramName(char *name)
{
	strcpy(programName, name);
}

//-----------------------------------------------------------------------------------------
void AGain::getProgramName(char *name)
{
	strcpy(name, programName);
}

//-----------------------------------------------------------------------------------------
void AGain::setParameter(long index, float value)
{
	fGain = value;
}

//-----------------------------------------------------------------------------------------
float AGain::getParameter(long index)
{
	return fGain;
}

//-----------------------------------------------------------------------------------------
void AGain::getParameterName(long index, char *label)
{
	strcpy(label, "  Gain  ");
}

//-----------------------------------------------------------------------------------------
void AGain::getParameterDisplay(long index, char *text)
{
	dB2string(fGain, text);
}

//-----------------------------------------------------------------------------------------
void AGain::getParameterLabel(long index, char *label)
{
	strcpy(label, "   dB   ");
}

//-----------------------------------------------------------------------------------------
void AGain::process(float **inputs, float **outputs, long sampleFrames)
{
    float *in1  =  inputs[0];
    float *in2  =  inputs[1];
    float *out1 = outputs[0];
    float *out2 = outputs[1];
	static float i=0;
	static int k=1;

    while(--sampleFrames >= 0)
    {
		if (i==44100)
		{
			i=0;
			k=-k;
		}
		if (k==1)
		{
			(*out1++) += (*in1++) * fGain;    // accumulating
			(*out2++) += (*in2++) * fGain;
		}
		if (k==-1)
		{
			(*out1++) += (*in1++) / fGain;    // accumulating
			(*out2++) += (*in2++) / fGain;
		}
    }
}

//-----------------------------------------------------------------------------------------
void AGain::processReplacing(float **inputs, float **outputs, long sampleFrames)
{
    float *in1  =  inputs[0];
    float *in2  =  inputs[1];
    float *out1 = outputs[0];
    float *out2 = outputs[1];
	static float i=0;
	static int k=1;

    while(--sampleFrames >= 0)
    {
        if (i==44100)
		{
			i=0;
			k=-k;
		}
		if (k==1)
		{
			(*out1++) = (*in1++) * fGain;    // replacing
			(*out2++) = (*in2++) * fGain;
		}
		if (k==-1)
		{
			(*out1++) = (*in1++) / fGain;    // replacing
			(*out2++) = (*in2++) / fGain;
		}
		i++;
    }
}