onset_detector.h

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/*
    Copyright (C) 2008 Paul Davis

    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.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

*/

#ifndef __ardour_onset_detector_h__
#define __ardour_onset_detector_h__

#include "ardour/audioanalyser.h"

namespace ARDOUR {

class AudioSource;
class Session;

class LIBARDOUR_API OnsetDetector : public AudioAnalyser
{
public:
        OnsetDetector (float sample_rate);
        ~OnsetDetector();

        static std::string operational_identifier();

        void set_silence_threshold (float);
        void set_peak_threshold (float);
        void set_function (int);

        int run (const std::string& path, Readable*, uint32_t channel, AnalysisFeatureList& results);

        static void cleanup_onsets (AnalysisFeatureList&, float sr, float gap_msecs);

protected:
        AnalysisFeatureList* current_results;
        int use_features (Vamp::Plugin::FeatureSet&, std::ostream*);

        static std::string _op_id;
};

} /* namespace */

#endif /* __ardour_audioanalyser_h__ */