From 271d4c04271f63d565ff0ff96415106b2c121327 Mon Sep 17 00:00:00 2001
From: Harald Eilertsen <haraldei@anduin.net>
Date: Sun, 19 Jul 2020 18:57:34 +0200
Subject: LV2: Refactor common code to base class.

---
 plugins/LV2/include/lv2plugin.h               | 18 ++++++++++++++++++
 plugins/LV2/src/ADClip7/ADClip7.cpp           | 12 +-----------
 plugins/LV2/src/ADClip7/ADClip7.h             | 14 ++++++--------
 plugins/LV2/src/Acceleration/Acceleration.cpp | 12 +-----------
 plugins/LV2/src/Acceleration/Acceleration.h   | 13 ++++++-------
 5 files changed, 32 insertions(+), 37 deletions(-)
 create mode 100644 plugins/LV2/include/lv2plugin.h

diff --git a/plugins/LV2/include/lv2plugin.h b/plugins/LV2/include/lv2plugin.h
new file mode 100644
index 0000000..f8ae4da
--- /dev/null
+++ b/plugins/LV2/include/lv2plugin.h
@@ -0,0 +1,18 @@
+// Required typa alias for VTS processing funcs.
+using VstInt32 = int32_t;
+
+class LV2Plugin
+{
+public:
+    LV2Plugin(double frame_rate)
+        : rate(frame_rate)
+    {}
+
+    double getSampleRate() const
+    {
+        return rate;
+    }
+
+private:
+    double rate;
+};
diff --git a/plugins/LV2/src/ADClip7/ADClip7.cpp b/plugins/LV2/src/ADClip7/ADClip7.cpp
index adf6eb9..11c8c27 100644
--- a/plugins/LV2/src/ADClip7/ADClip7.cpp
+++ b/plugins/LV2/src/ADClip7/ADClip7.cpp
@@ -19,7 +19,7 @@ enum class PortIndex : uint32_t {
 } // anon namespace
 
 ADClip7::ADClip7(double rate)
-    : rate(rate)
+    : LV2Plugin(rate)
     , refclipL(0.99)
     , refclipR(0.99)
 {
@@ -75,16 +75,6 @@ void ADClip7::run(uint32_t num_samples)
     processReplacing(const_cast<float **>(in), out, num_samples);
 }
 
-//
-// Helper functions to satisfy the processing code
-//
-
-double ADClip7::getSampleRate()
-{
-    return rate;
-}
-
-
 //
 // Include the processing code from the VST version.
 //
diff --git a/plugins/LV2/src/ADClip7/ADClip7.h b/plugins/LV2/src/ADClip7/ADClip7.h
index cfe7f40..e3d8474 100644
--- a/plugins/LV2/src/ADClip7/ADClip7.h
+++ b/plugins/LV2/src/ADClip7/ADClip7.h
@@ -2,11 +2,9 @@
 #define __ADClip7_H
 
 #include <cstdint>
+#include <lv2plugin.h>
 
-// Required typa alias for VTS processing funcs.
-using VstInt32 = int32_t;
-
-class ADClip7 {
+class ADClip7 : protected LV2Plugin {
 public:
     ADClip7(double rate);
 
@@ -16,13 +14,13 @@ public:
     static constexpr const char * URI = "https://www.airwindows.com/adclip-7";
 
 private:
+    /*
+     * These are the original DSP functions from the VST plugin.
+     * They need to be called from the LV2 plugins `run` function.
+     */
     void processReplacing(float **in, float **out, VstInt32 samples);
     void processDoubleReplacing(double **in, double **out, VstInt32 samples);
 
-    double getSampleRate();
-
-    double rate;
-
     // Pointers to control ports
     const float * boost;
     const float * soften;
diff --git a/plugins/LV2/src/Acceleration/Acceleration.cpp b/plugins/LV2/src/Acceleration/Acceleration.cpp
index c873e53..840d0f3 100644
--- a/plugins/LV2/src/Acceleration/Acceleration.cpp
+++ b/plugins/LV2/src/Acceleration/Acceleration.cpp
@@ -16,7 +16,7 @@ enum class PortIndex : uint32_t {
 } // anon namespace
 
 Acceleration::Acceleration(double rate)
-    : rate(rate)
+    : LV2Plugin(rate)
 {
 }
 
@@ -59,16 +59,6 @@ void Acceleration::run(uint32_t num_samples)
     processReplacing(const_cast<float **>(in), out, num_samples);
 }
 
-//
-// Helper functions to satisfy the processing code
-//
-
-double Acceleration::getSampleRate()
-{
-    return rate;
-}
-
-
 //
 // Include the processing code from the VST version.
 //
diff --git a/plugins/LV2/src/Acceleration/Acceleration.h b/plugins/LV2/src/Acceleration/Acceleration.h
index 16efc9a..0971045 100644
--- a/plugins/LV2/src/Acceleration/Acceleration.h
+++ b/plugins/LV2/src/Acceleration/Acceleration.h
@@ -2,11 +2,9 @@
 #define __Acceleration_H
 
 #include <cstdint>
+#include <lv2plugin.h>
 
-// Required typa alias for VTS processing funcs.
-using VstInt32 = int32_t;
-
-class Acceleration {
+class Acceleration : protected LV2Plugin {
 public:
     Acceleration(double rate);
 
@@ -16,12 +14,13 @@ public:
     static constexpr const char * URI = "https://www.airwindows.com/acceleration";
 
 private:
+    /*
+     * These are the original DSP functions from the VST plugin.
+     * They need to be called from the LV2 plugins `run` function.
+     */
     void processReplacing(float **in, float **out, VstInt32 samples);
     void processDoubleReplacing(double **in, double **out, VstInt32 samples);
 
-    double getSampleRate();
-
-    double rate;
     const float * limit;
     const float * drywet;
     const float * in[2];
-- 
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