Initial checkin of ZamDynamicEQ

Signed-off-by: Damien Zammit <damien@zamaudio.com>

1 files changed, 185 insertions, 0 deletions

diff --git a/plugins/ZamDynamicEQ/ZamDynamicEQPlugin.hpp b/plugins/ZamDynamicEQ/ZamDynamicEQPlugin.hpp
new file mode 100644
index 0000000..9187526
--- /dev/null
+++ b/plugins/ZamDynamicEQ/ZamDynamicEQPlugin.hpp
@@ -0,0 +1,185 @@
+/*
+ * ZamDynamicEQ
+ * Copyright (C) 2016  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 ZAMDYNAMICEQPLUGIN_HPP_INCLUDED
+#define ZAMDYNAMICEQPLUGIN_HPP_INCLUDED
+
+#include "DistrhoPlugin.hpp"
+#include <algorithm>
+
+START_NAMESPACE_DISTRHO
+
+#define MAX_SAMPLES 12
+
+// -----------------------------------------------------------------------
+
+class ZamDynamicEQPlugin : public Plugin
+{
+public:
+    enum Parameters
+    {
+        paramAttack = 0,
+        paramRelease,
+        paramKnee,
+        paramRatio,
+        paramThresh,
+        paramMaxBoostCut,
+        paramSlew,
+        paramSidechain,
+        paramToggleLow,
+        paramTogglePeak,
+        paramToggleHigh,
+        paramDetectFreq,
+        paramTargetFreq,
+        paramTargetWidth,
+        paramBoostCut,
+        paramControlGain,
+        paramCount
+    };
+
+    ZamDynamicEQPlugin();
+
+protected:
+    // -------------------------------------------------------------------
+    // Information
+
+    const char* getLabel() const noexcept override
+    {
+        return "ZamDynamicEQ";
+    }
+
+    const char* getDescription() const noexcept override
+    {
+        return "Mono dynamic EQ";
+    }
+
+    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', 'M', 'D', 'Q');
+    }
+
+    // -------------------------------------------------------------------
+    // Init
+
+    void initParameter(uint32_t index, Parameter& parameter) ;
+    void initProgramName(uint32_t index, String& programName) ;
+
+    // -------------------------------------------------------------------
+    // Internal data
+
+    float getParameterValue(uint32_t index) const override;
+    void setParameterValue(uint32_t index, float value) override;
+    void loadProgram(uint32_t index) override;
+
+    // -------------------------------------------------------------------
+    // 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 peq(double G0, double G, double GB, double w0, double Dw,
+             double *a0, double *a1, double *a2, double *b0, double *b1, double *b2, double *gn);
+    void highshelfeq(double, double G, double, double w0, double, double q, double B[], double A[]);
+    void lowshelfeq(double, double G, double, double w0, double, double q, double B[], double A[]);
+
+    void run_comp(double input, double* output);
+    // -------------------------------------------------------------------
+
+    void activate() override;
+    void run(const float** inputs, float** outputs, uint32_t frames) override;
+    void initAudioPort(bool input, uint32_t index, AudioPort& port) override;
+
+	void run_highshelf(double input, double* output);
+	void run_lowshelf(double input, double* output);
+	void run_peq1(double input, double* output);
+	void run_peq2(double input, double* output);
+
+    // -------------------------------------------------------------------
+
+private:
+
+	void reset_low(void);
+	void reset_high(void);
+	void reset_peak(void);
+	
+	struct linear_svf {
+		float g, k;
+		float a[3];
+		float m[3];
+
+		float s[2][2];
+	};
+
+	struct linear_svf bandpass;
+
+	void linear_svf_set_params(struct linear_svf *self,
+			float sample_rate, float cutoff, float resonance);
+	void linear_svf_reset(struct linear_svf *self);
+	float run_linear_svf(struct linear_svf *self, int c, float in);
+
+    float attack,release,knee,ratio,thresdb,max,slewfactor,sidechain, toglow, togpeak, toghigh, detectfreq, targetfreq, targetwidth, boostcut, controlgain; //parameters
+    float oldL_yl, oldL_y1, oldL_yg;
+
+    double x1,x2,y1,y2;
+    double x1a,x2a,y1a,y2a;
+    double zln1,zln2,zld1,zld2;
+    double zhn1,zhn2,zhd1,zhd2;
+    double a0x,a1x,a2x,b0x,b1x,b2x,gainx;
+    double a0y,a1y,a2y,b0y,b1y,b2y,gainy;
+    double Bl[3];
+    double Al[3];
+    double Bh[3];
+    double Ah[3];
+};
+
+// -----------------------------------------------------------------------
+
+END_NAMESPACE_DISTRHO
+
+#endif