2 Copyright (C) 2008-2012 Paul Davis
3 Author: David Robillard
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 #ifndef __ardour_lv2_plugin_h__
21 #define __ardour_lv2_plugin_h__
27 #include "ardour/plugin.h"
28 #include "ardour/uri_map.h"
29 #include "ardour/worker.h"
30 #include "pbd/ringbuffer.h"
34 // a callback function for lilv_state_new_from_instance(). friend of LV2Plugin
35 // so we can pass an LV2Plugin* in user_data and access its private members.
36 const void* lv2plugin_get_port_value(const char* port_symbol,
44 class LV2Plugin : public ARDOUR::Plugin, public ARDOUR::Workee
47 LV2Plugin (ARDOUR::AudioEngine& engine,
48 ARDOUR::Session& session,
50 framecnt_t sample_rate);
51 LV2Plugin (const LV2Plugin &);
54 std::string unique_id () const;
55 const char* uri () const;
56 const char* label () const;
57 const char* name () const;
58 const char* maker () const;
60 uint32_t num_ports () const;
61 uint32_t parameter_count () const;
62 float default_value (uint32_t port);
63 framecnt_t signal_latency () const;
64 void set_parameter (uint32_t port, float val);
65 float get_parameter (uint32_t port) const;
66 std::string get_docs() const;
67 std::string get_parameter_docs(uint32_t which) const;
68 int get_parameter_descriptor (uint32_t which, ParameterDescriptor&) const;
69 uint32_t nth_parameter (uint32_t port, bool& ok) const;
71 const void* extension_data (const char* uri) const;
73 const void* c_plugin();
75 const void* c_ui_type();
77 bool is_external_ui () const;
78 bool is_external_kx () const;
79 bool ui_is_resizable () const;
81 const char* port_symbol (uint32_t port) const;
82 uint32_t port_index (const char* symbol) const;
84 const LV2_Feature* const* features () { return _features; }
86 std::set<Evoral::Parameter> automatable () const;
92 int set_block_size (pframes_t /*nframes*/) { return 0; }
94 int connect_and_run (BufferSet& bufs,
95 ChanMapping in, ChanMapping out,
96 pframes_t nframes, framecnt_t offset);
98 std::string describe_parameter (Evoral::Parameter);
99 std::string state_node_name () const { return "lv2"; }
101 void print_parameter (uint32_t param,
105 bool parameter_is_audio (uint32_t) const;
106 bool parameter_is_control (uint32_t) const;
107 bool parameter_is_event (uint32_t) const;
108 bool parameter_is_input (uint32_t) const;
109 bool parameter_is_output (uint32_t) const;
110 bool parameter_is_toggled (uint32_t) const;
112 boost::shared_ptr<Plugin::ScalePoints>
113 get_scale_points(uint32_t port_index) const;
115 void set_insert_info(const PluginInsert* insert);
117 int set_state (const XMLNode& node, int version);
118 bool save_preset (std::string uri);
119 void remove_preset (std::string uri);
120 bool load_preset (PresetRecord);
121 std::string current_preset () const;
123 bool has_editor () const;
124 bool has_message_output () const;
126 bool write_from_ui(uint32_t index,
129 const uint8_t* body);
131 typedef void UIMessageSink(void* controller,
137 void enable_ui_emmission();
138 void emit_to_ui(void* controller, UIMessageSink sink);
140 Worker* worker() { return _worker; }
142 int work(uint32_t size, const void* data);
143 int work_response(uint32_t size, const void* data);
145 static URIMap _uri_map;
150 uint32_t atom_Sequence;
151 uint32_t atom_eventTransfer;
154 uint32_t log_Warning;
155 uint32_t midi_MidiEvent;
156 uint32_t time_Position;
158 uint32_t time_barBeat;
159 uint32_t time_beatUnit;
160 uint32_t time_beatsPerBar;
161 uint32_t time_beatsPerMinute;
172 LV2_Feature** _features;
174 framecnt_t _sample_rate;
175 float* _control_data;
178 LV2_Evbuf** _ev_buffers;
179 LV2_Evbuf** _atom_ev_buffers;
180 float* _bpm_control_port; ///< Special input set by ardour
181 float* _freewheel_control_port; ///< Special input set by ardour
182 float* _latency_control_port; ///< Special output set by ardour
183 framepos_t _next_cycle_start; ///< Expected start frame of next run cycle
184 double _next_cycle_speed; ///< Expected start frame of next run cycle
187 friend const void* lv2plugin_get_port_value(const char* port_symbol,
193 PORT_INPUT = 1, ///< Input port
194 PORT_OUTPUT = 1 << 1, ///< Output port
195 PORT_AUDIO = 1 << 2, ///< Audio (buffer of float)
196 PORT_CONTROL = 1 << 3, ///< Control (single float)
197 PORT_EVENT = 1 << 4, ///< Old event API event port
198 PORT_SEQUENCE = 1 << 5, ///< New atom API event port
199 PORT_MIDI = 1 << 6, ///< Event port understands MIDI
200 PORT_POSITION = 1 << 7 ///< Event port understands position
203 typedef unsigned PortFlags;
205 std::vector<PortFlags> _port_flags;
206 std::vector<size_t> _port_minimumSize;
207 std::map<std::string,uint32_t> _port_indices;
209 /// Message send to/from UI via ports
216 bool write_to_ui(uint32_t index,
219 const uint8_t* body);
221 bool write_to(RingBuffer<uint8_t>* dest,
225 const uint8_t* body);
227 // Created on demand so the space is only consumed if necessary
228 RingBuffer<uint8_t>* _to_ui;
229 RingBuffer<uint8_t>* _from_ui;
232 const void* (*extension_data) (const char* uri);
235 LV2_DataAccess _data_access_extension_data;
236 LV2_Feature _data_access_feature;
237 LV2_Feature _instance_access_feature;
238 LV2_Feature _make_path_feature;
239 LV2_Feature _log_feature;
240 LV2_Feature _work_schedule_feature;
241 LV2_Feature _options_feature;
242 LV2_Feature _def_state_feature;
244 // Options passed to plugin
245 int32_t _block_length;
248 mutable unsigned _state_version;
251 bool _has_state_interface;
253 const std::string plugin_dir () const;
254 const std::string scratch_dir () const;
255 const std::string file_dir () const;
256 const std::string state_dir (unsigned num) const;
258 static char* lv2_state_make_path (void* host_data,
261 void init (const void* c_plugin, framecnt_t rate);
262 void allocate_atom_event_buffers ();
263 void run (pframes_t nsamples);
265 void latency_compute_run ();
266 std::string do_save_preset (std::string);
267 void do_remove_preset (std::string);
268 void find_presets ();
269 void add_state (XMLNode *) const;
273 class LV2PluginInfo : public PluginInfo {
275 LV2PluginInfo (const void* c_plugin);
278 static PluginInfoList* discover ();
280 PluginPtr load (Session& session);
282 const void* _c_plugin;
285 typedef boost::shared_ptr<LV2PluginInfo> LV2PluginInfoPtr;
287 } // namespace ARDOUR
289 #endif /* __ardour_lv2_plugin_h__ */