comparison transform/Transform.h @ 0:da6937383da8

initial import

+/* -*- c-basic-offset: 4 -*-  vi:set ts=8 sts=4 sw=4: */
+
+/*
+    A waveform viewer and audio annotation editor.
+    Chris Cannam, Queen Mary University of London, 2005
+   
+    This is experimental software.  Not for distribution.
+*/
+
+#ifndef _TRANSFORM_H_
+#define _TRANSFORM_H_
+
+#include <QThread>
+
+#include "base/Model.h"
+
+typedef QString TransformName;
+
+/**
+ * A Transform turns one data model into another.
+ *
+ * Typically in this application, a Transform might have a
+ * DenseTimeValueModel as its input (e.g. an audio waveform) and a
+ * SparseOneDimensionalModel (e.g. detected beats) as its output.
+ *
+ * The Transform typically runs in the background, as a separate
+ * thread populating the output model.  The model is available to the
+ * user of the Transform immediately, but may be initially empty until
+ * the background thread has populated it.
+ */
+
+class Transform : public QThread
+{
+public:
+    virtual ~Transform();
+
+    Model *getInputModel()  { return m_input; }
+    Model *getOutputModel() { return m_output; }
+    Model *detachOutputModel() { m_detached = true; return m_output; }
+
+protected:
+    Transform(Model *m);
+
+    Model *m_input; // I don't own this
+    Model *m_output; // I own this, unless...
+    bool m_detached; // ... this is true.
+    bool m_deleting;
+};
+
+#endif