Add more fx

plugin/Source/FX/FXBase.h

@@ -0,0 +1,108 @@
+#pragma once
+
+#include <JuceHeader.h>
+
+#define VstInt32                int32_t
+#define AudioEffect             FXBase
+#define AudioEffectX            FXBase
+#define audioMasterCallback     FXBaseCallback
+#define VstPlugCategory         int
+#define kPlugCategEffect        1
+#define kVstMaxProgNameLen      32
+#define kVstMaxParamStrLen      32
+#define kVstMaxProductStrLen    32
+#define kVstMaxVendorStrLen     32
+#define vst_strncpy             strncpy
+
+inline void float2string (float f, char* text, int len)
+{
+    int decimals = 0;
+    if (std::fabs (f) >= 10.0f)
+        decimals = 1;
+    else if (std::fabs (f) > 1.0f)
+        decimals = 2;
+    else
+        decimals = 3;
+
+    juce::String str (f, decimals);
+    str.copyToUTF8 (text, (size_t)len);
+}
+
+inline void int2string (float i, char* text, int len)
+{
+    juce::String str (i);
+    str.copyToUTF8 (text, (size_t)len);
+}
+
+inline void dB2string (float value, char* text, int maxLen)
+{
+    if (value <= 0)
+        vst_strncpy (text, "-oo", (size_t) maxLen);
+    else
+        float2string (20.0f * log10 (value), text, maxLen);
+}
+
+//==============================================================================
+class FXBaseCallback
+{
+public:
+    FXBaseCallback (std::function<double()> cb_) : cb (cb_) {}
+
+    double getSampleRate()
+    {
+        return cb();
+    }
+
+    std::function<double()> cb;
+};
+
+//==============================================================================
+class FXBase
+{
+public:
+    //==============================================================================
+    FXBase (FXBaseCallback c, int numPrograms_, int numParams_)
+        : numPrograms (numPrograms_), numParams (numParams_), callback (c)
+    {
+    }
+
+    virtual ~FXBase() = default;
+
+    int getNumInputs()                  { return numInputs;     }
+    int getNumOutputs()                 { return numOutputs;    }
+    int getNumParameters()              { return numParams;     }
+
+    //==============================================================================
+    virtual bool getEffectName(char* name)                        = 0;
+    virtual VstPlugCategory getPlugCategory()                     = 0;
+    virtual bool getProductString(char* text)                     = 0;
+    virtual bool getVendorString(char* text)                      = 0;
+    virtual VstInt32 getVendorVersion()                           = 0;
+    virtual void processReplacing (float** inputs, float** outputs, VstInt32 sampleFrames) = 0;
+    virtual void processDoubleReplacing (double** inputs, double** outputs, VstInt32 sampleFrames) = 0;
+    virtual void getProgramName(char* name)                       = 0;
+    virtual void setProgramName(char* name)                       = 0;
+    virtual VstInt32 getChunk (void** data, bool isPreset)                          { juce::ignoreUnused (data, isPreset); return 0; }
+    virtual VstInt32 setChunk (void* data, VstInt32 byteSize, bool isPreset)        { juce::ignoreUnused (data, byteSize, isPreset); return 0; }
+    virtual float getParameter(VstInt32 index)                                      { juce::ignoreUnused (index); return 0; }
+    virtual void setParameter(VstInt32 index, float value)                          { juce::ignoreUnused (index, value); }
+    virtual void getParameterLabel(VstInt32 index, char* text)                      { juce::ignoreUnused (index, text); }
+    virtual void getParameterName(VstInt32 index, char* text)                       { juce::ignoreUnused (index, text); }
+    virtual void getParameterDisplay(VstInt32 index, char* text)                    { juce::ignoreUnused (index, text); }
+    virtual VstInt32 canDo(char *text)                            = 0;
+
+protected:
+    //==============================================================================
+    void setNumInputs (int numIn)       { numInputs = numIn;    }
+    void setNumOutputs (int numOut)     { numOutputs = numOut;  }
+    void setUniqueID (int)              {}
+    void canProcessReplacing()          {}
+    void canDoubleReplacing()           {}
+    void programsAreChunks (bool)       {}
+
+    int numInputs = 0, numOutputs = 0, numPrograms = 0, numParams = 0;
+
+    FXBaseCallback callback;
+
+    double getSampleRate()              { return callback.getSampleRate(); }
+};