loudness_reader.h

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/*
 * Copyright (C) 2016 Robin Gareus <robin@gareus.org>
 *
 * 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.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
 
#ifndef AUDIOGRAPHER_LOUDNESS_READER_H
#define AUDIOGRAPHER_LOUDNESS_READER_H
 
#include <vector>
 
#include <vamp-hostsdk/PluginLoader.h>
 
#include "audiographer/visibility.h"
#include "audiographer/sink.h"
#include "audiographer/routines.h"
#include "audiographer/utils/listed_source.h"
 
namespace AudioGrapher
{
 
class LIBAUDIOGRAPHER_API LoudnessReader : public ListedSource<float>, public Sink<float>
{
  public:
        LoudnessReader (float sample_rate, unsigned int channels, samplecnt_t bufsize);
        ~LoudnessReader ();
 
        void reset ();
 
        float calc_peak (float target_lufs = -23, float target_dbtp = -1) const;
        bool  get_loudness (float* integrated, float* short_term = NULL, float* momentary = NULL) const;
 
        virtual void process (ProcessContext<float> const & c);
 
        using Sink<float>::process;
 
  protected:
        Vamp::Plugin*              _ebur_plugin;
        std::vector<Vamp::Plugin*> _dbtp_plugins;
 
        float        _sample_rate;
        unsigned int _channels;
        samplecnt_t   _bufsize;
        samplecnt_t   _pos;
        float*       _bufs[2];
};
 
} // namespace
 
 
#endif // AUDIOGRAPHER_LOUDNESS_READER_H