2 Copyright (C) 2000-2006 Paul Davis
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 #ifndef __ardour_plugin_h__
21 #define __ardour_plugin_h__
23 #include <boost/shared_ptr.hpp>
26 #include "pbd/statefuldestructible.h"
27 #include "pbd/controllable.h"
29 #include <jack/types.h>
30 #include "ardour/chan_count.h"
31 #include "ardour/chan_mapping.h"
32 #include "ardour/cycles.h"
33 #include "ardour/latent.h"
34 #include "ardour/plugin_insert.h"
35 #include "ardour/types.h"
36 #include "ardour/midi_state_tracker.h"
50 typedef boost::shared_ptr<Plugin> PluginPtr;
55 virtual ~PluginInfo () { }
63 ARDOUR::PluginType type;
65 std::string unique_id;
67 virtual PluginPtr load (Session& session) = 0;
70 friend class PluginManager;
74 typedef boost::shared_ptr<PluginInfo> PluginInfoPtr;
75 typedef std::list<PluginInfoPtr> PluginInfoList;
77 class Plugin : public PBD::StatefulDestructible, public Latent
80 Plugin (ARDOUR::AudioEngine&, ARDOUR::Session&);
81 Plugin (const Plugin&);
84 struct ParameterDescriptor {
86 /* essentially a union of LADSPA and VST info */
93 float lower; ///< if this is a frequency, it will be in Hz (not a fraction of the sample rate)
94 float upper; ///< if this is a frequency, it will be in Hz (not a fraction of the sample rate)
102 XMLNode& get_state ();
103 virtual int set_state (const XMLNode &, int version);
105 virtual std::string unique_id() const = 0;
106 virtual const char * label() const = 0;
107 virtual const char * name() const = 0;
108 virtual const char * maker() const = 0;
109 virtual uint32_t parameter_count () const = 0;
110 virtual float default_value (uint32_t port) = 0;
111 virtual float get_parameter(uint32_t which) const = 0;
113 virtual int get_parameter_descriptor (uint32_t which, ParameterDescriptor&) const = 0;
114 virtual uint32_t nth_parameter (uint32_t which, bool& ok) const = 0;
115 virtual void activate () = 0;
116 virtual void deactivate () = 0;
117 virtual void flush () { deactivate(); activate(); }
119 virtual int set_block_size (pframes_t nframes) = 0;
121 virtual int connect_and_run (BufferSet& bufs,
122 ChanMapping in, ChanMapping out,
123 pframes_t nframes, framecnt_t offset);
125 virtual std::set<Evoral::Parameter> automatable() const = 0;
126 virtual std::string describe_parameter (Evoral::Parameter) = 0;
127 virtual std::string state_node_name() const = 0;
128 virtual void print_parameter (uint32_t, char*, uint32_t len) const = 0;
130 virtual bool parameter_is_audio(uint32_t) const = 0;
131 virtual bool parameter_is_control(uint32_t) const = 0;
132 virtual bool parameter_is_input(uint32_t) const = 0;
133 virtual bool parameter_is_output(uint32_t) const = 0;
135 void realtime_handle_transport_stopped ();
137 struct PresetRecord {
138 PresetRecord () : user (true) {}
139 PresetRecord (const std::string& u, const std::string& l, bool s = true) : uri (u), label (l), user (s) {}
141 bool operator!= (PresetRecord const & a) const {
142 return uri != a.uri || label != a.label;
150 PresetRecord save_preset (std::string);
151 void remove_preset (std::string);
153 virtual bool load_preset (PresetRecord);
155 const PresetRecord * preset_by_label (const std::string &);
156 const PresetRecord * preset_by_uri (const std::string &);
158 std::vector<PresetRecord> get_presets ();
160 /** @return Last preset to be requested; the settings may have
161 * been changed since; find out with parameter_changed_since_last_preset.
163 PresetRecord last_preset () const {
167 bool parameter_changed_since_last_preset () const {
168 return _parameter_changed_since_last_preset;
171 virtual int first_user_preset_index () const {
175 /** Emitted when a preset is added or removed, respectively */
176 PBD::Signal0<void> PresetAdded;
177 PBD::Signal0<void> PresetRemoved;
179 /** Emitted when a preset has been loaded */
180 PBD::Signal0<void> PresetLoaded;
182 virtual bool has_editor () const = 0;
184 /** Emitted when any parameter changes */
185 PBD::Signal2<void, uint32_t, float> ParameterChanged;
187 /* NOTE: this block of virtual methods looks like the interface
188 to a Processor, but Plugin does not inherit from Processor.
189 It is therefore not required that these precisely match
190 the interface, but it is likely that they will evolve together.
193 /* this returns true if the plugin can change its inputs or outputs on demand.
194 LADSPA, LV2 and VST plugins cannot do this. AudioUnits can.
197 virtual bool reconfigurable_io() const { return false; }
199 /* this is only called if reconfigurable_io() returns true */
200 virtual bool configure_io (ChanCount /*in*/, ChanCount /*out*/) { return true; }
202 /* specific types of plugins can overload this. As of September 2008, only
205 virtual bool can_support_io_configuration (const ChanCount& /*in*/, ChanCount& /*out*/) const { return false; }
206 virtual ChanCount output_streams() const;
207 virtual ChanCount input_streams() const;
209 PluginInfoPtr get_info() const { return _info; }
210 void set_info (const PluginInfoPtr inf) { _info = inf; }
212 ARDOUR::AudioEngine& engine() const { return _engine; }
213 ARDOUR::Session& session() const { return _session; }
215 void set_cycles (uint32_t c) { _cycles = c; }
216 cycles_t cycles() const { return _cycles; }
220 friend class PluginInsert;
221 friend struct PluginInsert::PluginControl;
223 virtual void set_parameter (uint32_t which, float val);
225 /** Do the actual saving of the current plugin settings to a preset of the provided name.
226 * Should return a URI on success, or an empty string on failure.
228 virtual std::string do_save_preset (std::string) = 0;
229 /** Do the actual removal of a preset of the provided name */
230 virtual void do_remove_preset (std::string) = 0;
232 ARDOUR::AudioEngine& _engine;
233 ARDOUR::Session& _session;
236 std::map<std::string, PresetRecord> _presets;
240 /** Fill _presets with our presets */
241 virtual void find_presets () = 0;
243 /** Add state to an existing XMLNode */
244 virtual void add_state (XMLNode *) const = 0;
247 MidiStateTracker _tracker;
248 BufferSet _pending_stop_events;
249 bool _have_pending_stop_events;
250 PresetRecord _last_preset;
251 bool _parameter_changed_since_last_preset;
254 PluginPtr find_plugin(ARDOUR::Session&, std::string unique_id, ARDOUR::PluginType);
256 } // namespace ARDOUR
258 #endif /* __ardour_plugin_h__ */