annotate transform/FeatureExtractionPluginTransform.h @ 25:e74f508db18c

* Add setRatio method to the time stretcher, and make it possible to change
  the ratio without having to construct and replace the time stretcher.  This
  means we can do it seamlessly.  Add a lot more ratios to the
  time stretch control in the main window

/* -*- 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.
    
    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_TRANSFORM_H_
#define _FEATURE_EXTRACTION_PLUGIN_TRANSFORM_H_

#include "Transform.h"

#include "vamp-sdk/Plugin.h"

class DenseTimeValueModel;

class FeatureExtractionPluginTransform : public Transform
{
public:
    FeatureExtractionPluginTransform(Model *inputModel,
				     QString plugin,
                                     int channel,
                                     QString configurationXml = "",
				     QString outputName = "");
    virtual ~FeatureExtractionPluginTransform();

protected:
    virtual void run();

    Vamp::Plugin *m_plugin;
    int m_channel;
    size_t m_stepSize;
    size_t m_blockSize;
    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 << "FeatureExtractionPluginTransform::getOutput: Output model not conformable" << std::endl;
	}
	return mc;
    }
};

#endif