// generated from file '../src/faust/biquad.dsp' by dsp2cc:
// Code generated with Faust 0.9.43 (http://faust.grame.fr)


namespace biquad {

class Dsp: public PluginDef {
private:
	int fSamplingFreq;
	FAUSTFLOAT 	fslider0;
	double 	fConst0;
	double 	fRec0[3];
	void clear_state_f();
	void init(unsigned int samplingFreq);
	void compute(int count, float *input0, float *output0);
	int register_par(const ParamReg& reg);

	static void clear_state_f_static(PluginDef*);
	static void init_static(unsigned int samplingFreq, PluginDef*);
	static void compute_static(int count, float *input0, float *output0, PluginDef*);
	static int register_params_static(const ParamReg& reg);
	static void del_instance(PluginDef *p);

public:
	Dsp();
	~Dsp();
};



Dsp::Dsp()
	: PluginDef() {
	version = PLUGINDEF_VERSION;
	flags = 0;
	id = "biquad";
	name = N_("BiQuad Filter");
	groups = 0;
	mono_audio = compute_static;
	stereo_audio = 0;
	set_samplerate = init_static;
	activate_plugin = 0;
	register_params = register_params_static;
	load_ui = 0;
	clear_state = clear_state_f_static;
	delete_instance = del_instance;
}

Dsp::~Dsp() {
}

inline void Dsp::clear_state_f()
{
	for (int i=0; i<3; i++) fRec0[i] = 0;
}

void Dsp::clear_state_f_static(PluginDef *p)
{
	static_cast<Dsp*>(p)->clear_state_f();
}

inline void Dsp::init(unsigned int samplingFreq)
{
	fSamplingFreq = samplingFreq;
	fConst0 = (6.283185307179586 / min(192000, max(1, fSamplingFreq)));
	clear_state_f();
}

void Dsp::init_static(unsigned int samplingFreq, PluginDef *p)
{
	static_cast<Dsp*>(p)->init(samplingFreq);
}

inline void Dsp::compute(int count, float *input0, float *output0)
{
	double 	fSlow0 = log((fConst0 * fslider0));
	double 	fSlow1 = (0 - (1.8442 * cos(exp((0.07238887 + (fSlow0 * (1.31282248 + (fSlow0 * (0.43359433 + (fSlow0 * (0.27547621 + (fSlow0 * (0.06446806 + (0.00506158 * fSlow0))))))))))))));
	for (int i=0; i<count; i++) {
		fRec0[0] = ((double)input0[i] - ((0.8502684100000001 * fRec0[2]) + (fSlow1 * fRec0[1])));
		output0[i] = (FAUSTFLOAT)(0.31622776601683794 * (fRec0[0] - (1.059 * fRec0[1])));
		// post processing
		fRec0[2] = fRec0[1]; fRec0[1] = fRec0[0];
	}
}

void Dsp::compute_static(int count, float *input0, float *output0, PluginDef *p)
{
	static_cast<Dsp*>(p)->compute(count, input0, output0);
}

int Dsp::register_par(const ParamReg& reg)
{
	reg.registerVar("biquad.Freq","","S","",&fslider0, 1.2e+03, 3e+02, 3e+03, 5.0);
	return 0;
}

int Dsp::register_params_static(const ParamReg& reg)
{
	return static_cast<Dsp*>(reg.plugin)->register_par(reg);
}

PluginDef *plugin() {
	return new Dsp();
}

void Dsp::del_instance(PluginDef *p)
{
	delete static_cast<Dsp*>(p);
}

} // end namespace biquad
