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;
68 virtual bool is_instrument() const;
71 friend class PluginManager;
75 typedef boost::shared_ptr<PluginInfo> PluginInfoPtr;
76 typedef std::list<PluginInfoPtr> PluginInfoList;
78 class Plugin : public PBD::StatefulDestructible, public Latent
81 Plugin (ARDOUR::AudioEngine&, ARDOUR::Session&);
82 Plugin (const Plugin&);
85 struct ParameterDescriptor {
87 /* XXX: it would probably be nice if this initialised everything */
88 ParameterDescriptor ()
92 /* essentially a union of LADSPA and VST info */
99 float lower; ///< if this is a frequency, it will be in Hz (not a fraction of the sample rate)
100 float upper; ///< if this is a frequency, it will be in Hz (not a fraction of the sample rate)
109 XMLNode& get_state ();
110 virtual int set_state (const XMLNode &, int version);
112 virtual void set_insert_info (const PluginInsert*) {}
114 virtual std::string unique_id() const = 0;
115 virtual const char * label() const = 0;
116 virtual const char * name() const = 0;
117 virtual const char * maker() const = 0;
118 virtual uint32_t parameter_count () const = 0;
119 virtual float default_value (uint32_t port) = 0;
120 virtual float get_parameter(uint32_t which) const = 0;
121 virtual std::string get_parameter_docs(uint32_t which) const { return ""; }
123 virtual int get_parameter_descriptor (uint32_t which, ParameterDescriptor&) const = 0;
124 virtual uint32_t nth_parameter (uint32_t which, bool& ok) const = 0;
125 virtual void activate () = 0;
126 virtual void deactivate () = 0;
127 virtual void flush () { deactivate(); activate(); }
129 virtual int set_block_size (pframes_t nframes) = 0;
131 virtual int connect_and_run (BufferSet& bufs,
132 ChanMapping in, ChanMapping out,
133 pframes_t nframes, framecnt_t offset);
135 virtual std::set<Evoral::Parameter> automatable() const = 0;
136 virtual std::string describe_parameter (Evoral::Parameter) = 0;
137 virtual std::string state_node_name() const = 0;
138 virtual void print_parameter (uint32_t, char*, uint32_t len) const = 0;
140 virtual bool parameter_is_audio(uint32_t) const = 0;
141 virtual bool parameter_is_control(uint32_t) const = 0;
142 virtual bool parameter_is_input(uint32_t) const = 0;
143 virtual bool parameter_is_output(uint32_t) const = 0;
145 typedef std::map<const std::string, const float> ScalePoints;
147 virtual boost::shared_ptr<ScalePoints> get_scale_points(uint32_t /*port_index*/) const {
148 return boost::shared_ptr<ScalePoints>();
151 void realtime_handle_transport_stopped ();
152 void realtime_locate ();
153 void monitoring_changed ();
155 struct PresetRecord {
156 PresetRecord () : user (true) {}
157 PresetRecord (const std::string& u, const std::string& l, bool s = true) : uri (u), label (l), user (s) {}
159 bool operator!= (PresetRecord const & a) const {
160 return uri != a.uri || label != a.label;
168 PresetRecord save_preset (std::string);
169 void remove_preset (std::string);
171 virtual bool load_preset (PresetRecord);
173 const PresetRecord * preset_by_label (const std::string &);
174 const PresetRecord * preset_by_uri (const std::string &);
176 std::vector<PresetRecord> get_presets ();
178 /** @return Last preset to be requested; the settings may have
179 * been changed since; find out with parameter_changed_since_last_preset.
181 PresetRecord last_preset () const {
185 bool parameter_changed_since_last_preset () const {
186 return _parameter_changed_since_last_preset;
189 virtual int first_user_preset_index () const {
193 /** Emitted when a preset is added or removed, respectively */
194 PBD::Signal0<void> PresetAdded;
195 PBD::Signal0<void> PresetRemoved;
197 /** Emitted when a preset has been loaded */
198 PBD::Signal0<void> PresetLoaded;
200 virtual bool has_editor () const = 0;
202 /** Emitted when any parameter changes */
203 PBD::Signal2<void, uint32_t, float> ParameterChanged;
205 /* NOTE: this block of virtual methods looks like the interface
206 to a Processor, but Plugin does not inherit from Processor.
207 It is therefore not required that these precisely match
208 the interface, but it is likely that they will evolve together.
211 /* this returns true if the plugin can change its inputs or outputs on demand.
212 LADSPA, LV2 and VST plugins cannot do this. AudioUnits can.
215 virtual bool reconfigurable_io() const { return false; }
217 /* this is only called if reconfigurable_io() returns true */
218 virtual bool configure_io (ChanCount /*in*/, ChanCount /*out*/) { return true; }
220 /* specific types of plugins can overload this. As of September 2008, only
223 virtual bool can_support_io_configuration (const ChanCount& /*in*/, ChanCount& /*out*/) const { return false; }
224 virtual ChanCount output_streams() const;
225 virtual ChanCount input_streams() const;
227 PluginInfoPtr get_info() const { return _info; }
228 virtual void set_info (const PluginInfoPtr inf);
230 ARDOUR::AudioEngine& engine() const { return _engine; }
231 ARDOUR::Session& session() const { return _session; }
233 void set_cycles (uint32_t c) { _cycles = c; }
234 cycles_t cycles() const { return _cycles; }
238 friend class PluginInsert;
239 friend struct PluginInsert::PluginControl;
241 virtual void set_parameter (uint32_t which, float val);
243 /** Do the actual saving of the current plugin settings to a preset of the provided name.
244 * Should return a URI on success, or an empty string on failure.
246 virtual std::string do_save_preset (std::string) = 0;
247 /** Do the actual removal of a preset of the provided name */
248 virtual void do_remove_preset (std::string) = 0;
250 ARDOUR::AudioEngine& _engine;
251 ARDOUR::Session& _session;
254 std::map<std::string, PresetRecord> _presets;
258 /** Fill _presets with our presets */
259 virtual void find_presets () = 0;
261 /** Add state to an existing XMLNode */
262 virtual void add_state (XMLNode *) const = 0;
265 MidiStateTracker _tracker;
266 BufferSet _pending_stop_events;
267 bool _have_pending_stop_events;
268 PresetRecord _last_preset;
269 bool _parameter_changed_since_last_preset;
271 void resolve_midi ();
274 PluginPtr find_plugin(ARDOUR::Session&, std::string unique_id, ARDOUR::PluginType);
276 } // namespace ARDOUR
278 #endif /* __ardour_plugin_h__ */