diff plugin/transform/PluginTransformer.h @ 328:21bd032ae791

* Introduce new Transform class which contains data necessary to describe the
  context for a plugin -- the plugin's name and output, the step/block size
  etc (formerly spread across ExecutionContext and TransformFactory).  Other
  code hasn't been updated to use this yet.
* Rename existing Transform stuff to Transformers (because they run Transforms)

I'm still not 100% sure about this change, don't rely on it.

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/plugin/transform/PluginTransformer.h	Mon Nov 05 15:31:06 2007 +0000
@@ -0,0 +1,63 @@
+/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
+
+/*
+    Sonic Visualiser
+    An audio file viewer and annotation editor.
+    Centre for Digital Music, Queen Mary, University of London.
+    This file copyright 2006 QMUL.
+   
+    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 (at your option) any later version.  See the file
+    COPYING included with this distribution for more information.
+*/
+
+#ifndef _PLUGIN_TRANSFORMER_H_
+#define _PLUGIN_TRANSFORMER_H_
+
+#include "Transformer.h"
+
+#include "base/Window.h"
+
+#include "vamp-sdk/Plugin.h"
+
+//!!! should this just move back up to Transformer? It is after all used
+//directly in all sorts of generic places, like Document
+
+class PluginTransformer : public Transformer
+{
+public:
+    class ExecutionContext {
+    public:
+        // Time domain:
+        ExecutionContext(int _c = -1, size_t _bs = 0);
+        
+        // Frequency domain:
+        ExecutionContext(int _c, size_t _ss, size_t _bs, WindowType _wt);
+
+        // From plugin defaults:
+        ExecutionContext(int _c, const Vamp::PluginBase *_plugin);
+
+        bool operator==(const ExecutionContext &);
+
+        void makeConsistentWithPlugin(const Vamp::PluginBase *_plugin);
+
+        int channel;
+        Vamp::Plugin::InputDomain domain;
+        size_t stepSize;
+        size_t blockSize;
+        WindowType windowType;
+        size_t startFrame;
+        size_t duration;    // 0 -> whole thing
+        float sampleRate;   // 0 -> model's rate
+    };
+
+protected:
+    PluginTransformer(Model *inputModel,
+                      const ExecutionContext &context);
+
+    ExecutionContext m_context;
+};
+
+#endif