annotate transform/FeatureExtractionModelTransformer.h @ 489:82ab61fa9223

* Reorganise our sparql queries on the basis that Redland must be
  available, not only optional.  So for anything querying the pool
  of data about plugins, we use a single datastore and model which
  is initialised at the outset by PluginRDFIndexer and then queried
  directly; for anything that "reads from a file" (e.g. loading
  annotations) we query directly using Rasqal, going to the
  datastore when we need additional plugin-related information.

  This may improve performance, but mostly it simplifies the code
  and fixes a serious issue with RDF import in the previous versions
  (namely that multiple sequential RDF imports would end up sharing
  the same RDF data pool!)

/* -*- 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 "ModelTransformer.h"

#include <QString>

#include <vamp-hostsdk/Plugin.h>

#include <iostream>

class DenseTimeValueModel;

class FeatureExtractionModelTransformer : public ModelTransformer
{
    Q_OBJECT

public:
    FeatureExtractionModelTransformer(Input input,
                                      const Transform &transform);
    virtual ~FeatureExtractionModelTransformer();

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 channelCount, long startFrame, long size,
                   float **buffer);

    // just casts

    DenseTimeValueModel *getConformingInput();

    template <typename ModelClass> bool isOutput() {
        return dynamic_cast<ModelClass *>(m_output) != 0;
    }

    template <typename ModelClass> ModelClass *getConformingOutput() {
	ModelClass *mc = dynamic_cast<ModelClass *>(m_output);
	if (!mc) {
	    std::cerr << "FeatureExtractionModelTransformer::getOutput: Output model not conformable" << std::endl;
	}
	return mc;
    }
};

#endif