audio_port.h

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/*
 * Copyright (C) 2006-2009 David Robillard <d@drobilla.net>
 * Copyright (C) 2007-2010 Carl Hetherington <carl@carlh.net>
 * Copyright (C) 2007-2015 Paul Davis <paul@linuxaudiosystems.com>
 * Copyright (C) 2017 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.
 */
 
#pragma once
 
#include "zita-resampler/vmresampler.h"
 
#include "ardour/port.h"
#include "ardour/audio_buffer.h"
 
namespace ARDOUR {
 
class LIBARDOUR_API AudioPort : public Port
{
public:
        ~AudioPort ();
 
        DataType type () const {
                return DataType::AUDIO;
        }
 
        void cycle_start (pframes_t);
        void cycle_end (pframes_t);
        void cycle_split ();
 
        void flush_buffers (pframes_t nframes);
 
        /* reset SRC, clear out any state */
        void reinit (bool with_ratio);
 
        Buffer& get_buffer (pframes_t nframes) {
                return get_audio_buffer (nframes);
        }
 
        AudioBuffer& get_audio_buffer (pframes_t nframes);
        void set_buffer_size (pframes_t nframes);
 
protected:
        friend class PortManager;
        AudioPort (std::string const &, PortFlags);
 
 
        /* special access for PortManager only (hah, C++) */
        Sample* engine_get_whole_audio_buffer ();
 
private:
        AudioBuffer*            _buffer;
        ArdourZita::VMResampler _src;
        Sample*                 _data;
        bool                    _buf_valid;
};
 
} // namespace ARDOUR