diff plugin/transform/FeatureExtractionPluginTransformer.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/FeatureExtractionPluginTransformer.h	Mon Nov 05 15:31:06 2007 +0000
@@ -0,0 +1,62 @@
+/* -*- 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 Chris Cannam and 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 _FEATURE_EXTRACTION_PLUGIN_TRANSFORMER_H_
+#define _FEATURE_EXTRACTION_PLUGIN_TRANSFORMER_H_
+
+#include "PluginTransformer.h"
+
+class DenseTimeValueModel;
+
+class FeatureExtractionPluginTransformer : public PluginTransformer
+{
+    Q_OBJECT
+
+public:
+    FeatureExtractionPluginTransformer(Model *inputModel,
+                                       QString plugin,
+                                       const ExecutionContext &context,
+                                       QString configurationXml = "",
+                                       QString outputName = "");
+    virtual ~FeatureExtractionPluginTransformer();
+
+protected:
+    virtual void run();
+
+    Vamp::Plugin *m_plugin;
+    Vamp::Plugin::OutputDescriptor *m_descriptor;
+    int m_outputFeatureNo;
+
+    void addFeature(size_t blockFrame,
+		    const Vamp::Plugin::Feature &feature);
+
+    void setCompletion(int);
+
+    void getFrames(int channel, int channelCount,
+                   long startFrame, long size, float *buffer);
+
+    // just casts
+    DenseTimeValueModel *getInput();
+    template <typename ModelClass> ModelClass *getOutput() {
+	ModelClass *mc = dynamic_cast<ModelClass *>(m_output);
+	if (!mc) {
+	    std::cerr << "FeatureExtractionPluginTransformer::getOutput: Output model not conformable" << std::endl;
+	}
+	return mc;
+    }
+};
+
+#endif
+