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/*
* ZamHeadX2 stereo widener
* Copyright (C) 2014 Damien Zammit <damien@zamaudio.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef ZAMWIDTHX2PLUGIN_HPP_INCLUDED
#define ZAMWIDTHX2PLUGIN_HPP_INCLUDED
#include "DistrhoPlugin.hpp"
START_NAMESPACE_DISTRHO
// -----------------------------------------------------------------------
class ZamHeadX2Plugin : public Plugin
{
public:
enum Parameters
{
paramAzimuth = 0,
paramElevation,
paramWidth,
paramCount
};
ZamHeadX2Plugin();
~ZamHeadX2Plugin();
protected:
// -------------------------------------------------------------------
// Information
const char* getLabel() const noexcept override
{
return "ZamHeadX2";
}
const char* getDescription() const noexcept override
{
return "HRTF acoustic filtering plugin for directional sound.";
}
const char* getMaker() const noexcept override
{
return "Damien Zammit";
}
const char* getHomePage() const noexcept override
{
return "http://www.zamaudio.com";
}
const char* getLicense() const noexcept override
{
return "GPL v2+";
}
uint32_t getVersion() const noexcept override
{
return d_version(3, 7, 0);
}
int64_t getUniqueId() const noexcept override
{
return d_cconst('Z', 'H', 'D', '2');
}
// -------------------------------------------------------------------
// Init
void initParameter(uint32_t index, Parameter& parameter) override;
void initProgramName(uint32_t index, String& programName) override;
// -------------------------------------------------------------------
// Internal data
float getParameterValue(uint32_t index) const override;
void setParameterValue(uint32_t index, float value) override;
void loadProgram(uint32_t index);
// -------------------------------------------------------------------
// Process
static inline float
sanitize_denormal(float v) {
if(!std::isnormal(v))
return 0.f;
return v;
}
static inline float
from_dB(float gdb) {
return (exp(gdb/20.f*log(10.f)));
}
static inline float
to_dB(float g) {
return (20.f*log10(g));
}
void activate() override;
void run(const float** inputs, float** outputs, uint32_t frames) override;
void pushsample(float* buf, float val, int i, uint32_t maxframes);
float getsample(float* buf, int i, uint32_t maxframes);
// -------------------------------------------------------------------
private:
float elevation, azimuth, width;
float inbuf[2][4096+200];
float outbuf[2][4096+200];
int pos[6];
};
// -----------------------------------------------------------------------
END_NAMESPACE_DISTRHO
#endif // ZAMHEADX2_HPP_INCLUDED
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