LV2: Refactor in, out and params to base class.

Base class is now a template taking number of params, inputs and outputs
as template args. The last two defaults to 2 (stereo pair), but number
of params have to be given.

Now if only we could find a smart template for generating the run
function too...

1 files changed, 24 insertions, 0 deletions

diff --git a/plugins/LV2/include/lv2plugin.h b/plugins/LV2/include/lv2plugin.h
index f8ae4da..46464a3 100644
--- a/plugins/LV2/include/lv2plugin.h
+++ b/plugins/LV2/include/lv2plugin.h
@@ -1,6 +1,10 @@
+#include <cstddef>
+#include <iostream>
+
 // Required typa alias for VTS processing funcs.
 using VstInt32 = int32_t;
 
+template<size_t nparams, size_t ninputs = 2, size_t noutputs = 2>
 class LV2Plugin
 {
 public:
@@ -8,11 +12,31 @@ public:
         : rate(frame_rate)
     {}
 
+    void connect_port(uint32_t port, void * data)
+    {
+        if (port < nparams) {
+            params[port] = static_cast<const float *>(data);
+        }
+        else if (port < nparams + ninputs) {
+            in[port - nparams] = static_cast<const float *>(data);
+        }
+        else if (port < nparams + ninputs + noutputs) {
+            out[port - nparams - ninputs] = static_cast<float *>(data);
+        }
+        else {
+            std::cerr << "Invalid port " << port << ": ignoring." << std::endl;
+        }
+    }
+
     double getSampleRate() const
     {
         return rate;
     }
 
+    const float * params[nparams];
+    const float * in[ninputs];
+    float * out[noutputs];
+
 private:
     double rate;
 };