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/libardour_visibility.h"
23 #include "ardour/types.h"
24 #include "ardour/chan_count.h"
25 #include "ardour/processor.h"
26 #include "ardour/automation_control.h"
33 /** Applies a declick operation to all audio inputs, passing the same number of
34 * audio outputs, and passing through any other types unchanged.
36 class LIBARDOUR_API Amp : public Processor {
40 std::string display_name() const;
42 bool visible () const;
44 bool can_support_io_configuration (const ChanCount& in, ChanCount& out);
45 bool configure_io (ChanCount in, ChanCount out);
47 void run (BufferSet& bufs, framepos_t start_frame, framepos_t end_frame, pframes_t nframes, bool);
49 bool apply_gain () const { return _apply_gain; }
50 void apply_gain (bool yn) { _apply_gain = yn; }
52 void set_gain_automation_buffer (gain_t *);
54 void setup_gain_automation (framepos_t start_frame, framepos_t end_frame, framecnt_t nframes);
56 bool apply_gain_automation() const { return _apply_gain_automation; }
57 void apply_gain_automation(bool yn) { _apply_gain_automation = yn; }
59 XMLNode& state (bool full);
60 int set_state (const XMLNode&, int version);
62 static void apply_gain (BufferSet& bufs, framecnt_t nframes, gain_t initial, gain_t target);
63 static void apply_simple_gain(BufferSet& bufs, framecnt_t nframes, gain_t target);
65 static void apply_gain (AudioBuffer& buf, framecnt_t nframes, gain_t initial, gain_t target);
66 static void apply_simple_gain(AudioBuffer& buf, framecnt_t nframes, gain_t target);
68 static void declick (BufferSet& bufs, framecnt_t nframes, int dir);
70 gain_t gain () const { return _gain_control->get_value(); }
72 void set_gain (gain_t g, void *src);
73 void inc_gain (gain_t delta, void *src);
75 static void update_meters();
79 struct GainControl : public AutomationControl {
80 GainControl (std::string name, Session& session, Amp* a, const Evoral::Parameter ¶m,
81 boost::shared_ptr<AutomationList> al = boost::shared_ptr<AutomationList>() )
82 : AutomationControl (session, param, al, name)
84 set_flags (Controllable::Flag (flags() | Controllable::GainLike));
85 alist()->reset_default (1.0);
88 void set_value (double val);
90 double internal_to_interface (double) const;
91 double interface_to_internal (double) const;
92 double internal_to_user (double) const;
97 boost::shared_ptr<GainControl> gain_control() {
101 boost::shared_ptr<const GainControl> gain_control() const {
102 return _gain_control;
105 std::string value_as_string (boost::shared_ptr<AutomationControl>) const;
107 static const float max_gain_coefficient;
110 bool _denormal_protection;
112 bool _apply_gain_automation;
115 boost::shared_ptr<GainControl> _gain_control;
117 /** Buffer that we should use for gain automation */
118 gain_t* _gain_automation_buffer;
122 } // namespace ARDOUR
124 #endif // __ardour_amp_h__