1 files changed, 135 insertions, 0 deletions
diff --git a/plugins/ZamGrains/ZamGrainsPlugin.hpp b/plugins/ZamGrains/ZamGrainsPlugin.hpp
new file mode 100644
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+++ b/plugins/ZamGrains/ZamGrainsPlugin.hpp
@@ -0,0 +1,135 @@
+/*
+ * ZamGrains Granular Delay
+ * Copyright (C) 2018  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 ZAMGRAINSPLUGIN_HPP_INCLUDED
+#define ZAMGRAINSPLUGIN_HPP_INCLUDED
+
+#include "DistrhoPlugin.hpp"
+
+// 1 second of delay at 192kHz
+#define MAX_DELAY 192000
+
+START_NAMESPACE_DISTRHO
+
+// -----------------------------------------------------------------------
+
+class ZamGrainsPlugin : public Plugin
+{
+public:
+    enum Parameters
+    {
+        paramGain = 0,
+        paramGrains,
+	paramGrainspeed,
+	paramPlayspeed,
+        paramDelaytime,
+        paramCount
+    };
+
+    ZamGrainsPlugin();
+
+protected:
+    // -------------------------------------------------------------------
+    // Information
+
+    const char* getLabel() const noexcept override
+    {
+        return "ZamGrains";
+    }
+
+    const char* getDescription() const noexcept override
+    {
+        return "A granular delay plugin";
+    }
+
+    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, 10, 0);
+    }
+
+    int64_t getUniqueId() const noexcept override
+    {
+        return d_cconst('Z', 'M', 'G', 'R');
+    }
+
+    // -------------------------------------------------------------------
+    // 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;
+    float sample_and_hold(int ctrl, float input, int *state);
+    float hanning(int pos, int windowsize);
+
+    // -------------------------------------------------------------------
+
+private:
+    int currgrains, zidx, zidx2, zidxold, zidx2old, samphold, samphold2;
+    float grains, grainspeed, playspeed, delaytime, gain, delaytimeout;
+    float delaytimeold;
+    float z[MAX_DELAY];
+    unsigned int posz;
+    unsigned int posphasor, posrate;
+};
+
+// -----------------------------------------------------------------------
+
+END_NAMESPACE_DISTRHO
+
+#endif  // ZAMGRAINS_HPP_INCLUDED