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livetrax/libs/panners/2in2out/panner_2in2out.h

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/*
* Copyright (C) 2011-2012 Carl Hetherington <carl@carlh.net>
* Copyright (C) 2011-2017 Paul Davis <paul@linuxaudiosystems.com>
*
* 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 __ardour_panner_2in2out_h__
#define __ardour_panner_2in2out_h__
#include <cmath>
#include <cassert>
#include <vector>
#include <string>
#include <iostream>
#include "pbd/stateful.h"
#include "pbd/controllable.h"
#include "pbd/cartesian.h"
#include "ardour/automation_control.h"
#include "ardour/automatable.h"
#include "ardour/panner.h"
#include "ardour/types.h"
namespace ARDOUR {
class Panner2in2out : public Panner
{
public:
Panner2in2out (boost::shared_ptr<Pannable>);
~Panner2in2out ();
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ChanCount in() const { return ChanCount (DataType::AUDIO, 2); }
ChanCount out() const { return ChanCount (DataType::AUDIO, 2); }
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bool clamp_position (double&);
bool clamp_width (double&);
std::pair<double, double> position_range () const;
std::pair<double, double> width_range () const;
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void set_position (double);
void set_width (double);
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double position () const;
double width () const;
std::set<Evoral::Parameter> what_can_be_automated() const;
static Panner* factory (boost::shared_ptr<Pannable>, boost::shared_ptr<Speakers>);
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std::string describe_parameter (Evoral::Parameter);
std::string value_as_string (boost::shared_ptr<const AutomationControl>) const;
XMLNode& get_state ();
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void update ();
void reset ();
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void thaw ();
protected:
float left[2];
float right[2];
float desired_left[2];
float desired_right[2];
float left_interp[2];
float right_interp[2];
private:
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bool clamp_stereo_pan (double& direction_as_lr_fract, double& width);
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void distribute_one (AudioBuffer& srcbuf, BufferSet& obufs, gain_t gain_coeff, pframes_t nframes, uint32_t which);
void distribute_one_automated (AudioBuffer& srcbuf, BufferSet& obufs,
samplepos_t start, samplepos_t end, pframes_t nframes,
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pan_t** buffers, uint32_t which);
};
} // namespace
#endif /* __ardour_panner_2in2out_h__ */