2 Copyright (C) 2006 Paul Davis
4 This program is free software; you can redistribute it and/or modify it
5 under the terms of the GNU General Public License as published by the Free
6 Software Foundation; either version 2 of the License, or (at your option)
9 This program is distributed in the hope that it will be useful, but WITHOUT
10 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 You should have received a copy of the GNU General Public License along
15 with this program; if not, write to the Free Software Foundation, Inc.,
16 675 Mass Ave, Cambridge, MA 02139, USA.
19 #ifndef __ardour_amp_h__
20 #define __ardour_amp_h__
22 #include "ardour/dB.h"
23 #include "ardour/libardour_visibility.h"
24 #include "ardour/types.h"
25 #include "ardour/chan_count.h"
26 #include "ardour/processor.h"
27 #include "ardour/automation_control.h"
35 /** Applies a declick operation to all audio inputs, passing the same number of
36 * audio outputs, and passing through any other types unchanged.
38 class LIBARDOUR_API Amp : public Processor {
40 Amp(Session& s, const std::string& display_name, boost::shared_ptr<GainControl> control, bool control_midi_also);
42 std::string display_name () const { return _display_name; }
43 void set_display_name (const std::string& name) { _display_name = name; }
45 bool visible () const;
47 bool can_support_io_configuration (const ChanCount& in, ChanCount& out);
48 bool configure_io (ChanCount in, ChanCount out);
50 void run (BufferSet& bufs, framepos_t start_frame, framepos_t end_frame, pframes_t nframes, bool);
52 bool apply_gain () const { return _apply_gain; }
53 void apply_gain (bool yn) { _apply_gain = yn; }
55 void set_gain_automation_buffer (gain_t *);
57 void setup_gain_automation (framepos_t start_frame, framepos_t end_frame, framecnt_t nframes);
59 bool apply_gain_automation() const { return _apply_gain_automation; }
60 void apply_gain_automation(bool yn) { _apply_gain_automation = yn; }
62 XMLNode& state (bool full);
63 int set_state (const XMLNode&, int version);
65 static gain_t apply_gain (BufferSet& bufs, framecnt_t sample_rate, framecnt_t nframes, gain_t initial, gain_t target, bool midi_amp = true);
66 static void apply_simple_gain(BufferSet& bufs, framecnt_t nframes, gain_t target, bool midi_amp = true);
68 static gain_t apply_gain (AudioBuffer& buf, framecnt_t sample_rate, framecnt_t nframes, gain_t initial, gain_t target);
69 static void apply_simple_gain(AudioBuffer& buf, framecnt_t nframes, gain_t target);
71 static void declick (BufferSet& bufs, framecnt_t nframes, int dir);
72 static void update_meters();
74 boost::shared_ptr<GainControl> gain_control() {
78 boost::shared_ptr<const GainControl> gain_control() const {
82 std::string value_as_string (boost::shared_ptr<AutomationControl>) const;
85 bool _denormal_protection;
87 bool _apply_gain_automation;
89 framepos_t _current_automation_frame;
91 std::string _display_name;
93 boost::shared_ptr<GainControl> _gain_control;
95 /** Buffer that we should use for gain automation */
96 gain_t* _gain_automation_buffer;
101 } // namespace ARDOUR
103 #endif // __ardour_amp_h__