92 lines
3.1 KiB
C++
92 lines
3.1 KiB
C++
/*
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* Copyright (C) 2006-2014 David Robillard <d@drobilla.net>
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* Copyright (C) 2007-2017 Paul Davis <paul@linuxaudiosystems.com>
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* Copyright (C) 2009-2012 Carl Hetherington <carl@carlh.net>
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* Copyright (C) 2013-2018 Robin Gareus <robin@gareus.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef __ardour_amp_h__
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#define __ardour_amp_h__
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#include "ardour/dB.h"
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#include "ardour/libardour_visibility.h"
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#include "ardour/types.h"
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#include "ardour/chan_count.h"
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#include "ardour/processor.h"
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#include "ardour/automation_control.h"
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namespace ARDOUR {
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class BufferSet;
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class GainControl;
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class IO;
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/** Gain Stage (Fader, Trim). */
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class LIBARDOUR_API Amp : public Processor {
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public:
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Amp(Session& s, const std::string& display_name, boost::shared_ptr<GainControl> control, bool control_midi_also);
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std::string display_name () const { return _display_name; }
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void set_display_name (const std::string& name) { _display_name = name; }
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bool visible () const;
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bool can_support_io_configuration (const ChanCount& in, ChanCount& out);
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bool configure_io (ChanCount in, ChanCount out);
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void run (BufferSet& bufs, samplepos_t start_sample, samplepos_t end_sample, double speed, pframes_t nframes, bool);
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void set_gain_automation_buffer (gain_t *);
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void setup_gain_automation (samplepos_t start_sample, samplepos_t end_sample, samplecnt_t nframes);
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XMLNode& state () const;
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int set_state (const XMLNode&, int version);
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static gain_t apply_gain (BufferSet& bufs, samplecnt_t sample_rate, samplecnt_t nframes, gain_t initial, gain_t target, bool midi_amp = true);
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static void apply_simple_gain(BufferSet& bufs, samplecnt_t nframes, gain_t target, bool midi_amp = true);
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static gain_t apply_gain (AudioBuffer& buf, samplecnt_t sample_rate, samplecnt_t nframes, gain_t initial, gain_t target, sampleoffset_t offset = 0);
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static void apply_simple_gain (AudioBuffer& buf, samplecnt_t nframes, gain_t target, sampleoffset_t offset = 0);
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boost::shared_ptr<GainControl> gain_control() {
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return _gain_control;
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}
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boost::shared_ptr<const GainControl> gain_control() const {
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return _gain_control;
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}
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private:
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bool _apply_gain_automation;
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float _current_gain;
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samplepos_t _current_automation_sample;
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std::string _display_name;
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boost::shared_ptr<GainControl> _gain_control;
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/** Buffer that we should use for gain automation */
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gain_t* _gain_automation_buffer;
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bool _midi_amp;
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};
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} // namespace ARDOUR
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#endif // __ardour_amp_h__
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