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__
26 #include <boost/enable_shared_from_this.hpp>
28 #include "ardour/plugin.h"
29 #include "ardour/uri_map.h"
30 #include "ardour/worker.h"
31 #include "pbd/ringbuffer.h"
37 typedef struct LV2_Evbuf_Impl LV2_Evbuf;
41 // a callback function for lilv_state_new_from_instance(). friend of LV2Plugin
42 // so we can pass an LV2Plugin* in user_data and access its private members.
43 const void* lv2plugin_get_port_value(const char* port_symbol,
51 class LIBARDOUR_API LV2Plugin : public ARDOUR::Plugin, public ARDOUR::Workee
54 LV2Plugin (ARDOUR::AudioEngine& engine,
55 ARDOUR::Session& session,
57 framecnt_t sample_rate);
58 LV2Plugin (const LV2Plugin &);
61 std::string unique_id () const;
62 const char* uri () const;
63 const char* label () const;
64 const char* name () const;
65 const char* maker () const;
67 uint32_t num_ports () const;
68 uint32_t parameter_count () const;
69 float default_value (uint32_t port);
70 framecnt_t signal_latency () const;
71 void set_parameter (uint32_t port, float val);
72 float get_parameter (uint32_t port) const;
73 std::string get_docs() const;
74 std::string get_parameter_docs(uint32_t which) const;
75 int get_parameter_descriptor (uint32_t which, ParameterDescriptor&) const;
76 uint32_t nth_parameter (uint32_t port, bool& ok) const;
78 const void* extension_data (const char* uri) const;
80 const void* c_plugin();
82 const void* c_ui_type();
84 bool is_external_ui () const;
85 bool is_external_kx () const;
86 bool ui_is_resizable () const;
88 const char* port_symbol (uint32_t port) const;
89 uint32_t port_index (const char* symbol) const;
91 const LV2_Feature* const* features () { return _features; }
93 std::set<Evoral::Parameter> automatable () const;
99 int set_block_size (pframes_t /*nframes*/) { return 0; }
101 int connect_and_run (BufferSet& bufs,
102 ChanMapping in, ChanMapping out,
103 pframes_t nframes, framecnt_t offset);
105 std::string describe_parameter (Evoral::Parameter);
106 std::string state_node_name () const { return "lv2"; }
108 void print_parameter (uint32_t param,
112 bool parameter_is_audio (uint32_t) const;
113 bool parameter_is_control (uint32_t) const;
114 bool parameter_is_event (uint32_t) const;
115 bool parameter_is_input (uint32_t) const;
116 bool parameter_is_output (uint32_t) const;
117 bool parameter_is_toggled (uint32_t) const;
119 boost::shared_ptr<Plugin::ScalePoints>
120 get_scale_points(uint32_t port_index) const;
122 void set_insert_info(const PluginInsert* insert);
124 int set_state (const XMLNode& node, int version);
125 bool save_preset (std::string uri);
126 void remove_preset (std::string uri);
127 bool load_preset (PresetRecord);
128 std::string current_preset () const;
130 bool has_editor () const;
131 bool has_message_output () const;
133 bool write_from_ui(uint32_t index,
136 const uint8_t* body);
138 typedef void UIMessageSink(void* controller,
144 void enable_ui_emmission();
145 void emit_to_ui(void* controller, UIMessageSink sink);
147 Worker* worker() { return _worker; }
149 uint32_t patch_count() const { return _patch_count; }
150 const char * patch_uri(const uint32_t p) const { if (p < _patch_count) return _patch_value_uri[p]; else return NULL; }
151 const char * patch_key(const uint32_t p) const { if (p < _patch_count) return _patch_value_key[p]; else return NULL; }
152 const char * patch_val(const uint32_t p) const { if (p < _patch_count) return _patch_value_cur[p]; else return NULL; }
153 bool patch_set(const uint32_t p, const char * val);
154 PBD::Signal1<void,const uint32_t> PatchChanged;
156 int work(uint32_t size, const void* data);
157 int work_response(uint32_t size, const void* data);
159 static URIMap _uri_map;
164 uint32_t atom_Sequence;
165 uint32_t atom_eventTransfer;
170 uint32_t log_Warning;
171 uint32_t midi_MidiEvent;
172 uint32_t time_Position;
174 uint32_t time_barBeat;
175 uint32_t time_beatUnit;
176 uint32_t time_beatsPerBar;
177 uint32_t time_beatsPerMinute;
181 uint32_t patch_property;
182 uint32_t patch_value;
191 LV2_Feature** _features;
193 framecnt_t _sample_rate;
194 float* _control_data;
197 LV2_Evbuf** _ev_buffers;
198 LV2_Evbuf** _atom_ev_buffers;
199 float* _bpm_control_port; ///< Special input set by ardour
200 float* _freewheel_control_port; ///< Special input set by ardour
201 float* _latency_control_port; ///< Special output set by ardour
202 framepos_t _next_cycle_start; ///< Expected start frame of next run cycle
203 double _next_cycle_speed; ///< Expected start frame of next run cycle
206 uint32_t _patch_count;
207 char ** _patch_value_uri;
208 char ** _patch_value_key;
209 char (*_patch_value_cur)[PATH_MAX]; ///< current value
210 char (*_patch_value_set)[PATH_MAX]; ///< new value to set
211 Glib::Threads::Mutex _patch_set_lock;
213 friend const void* lv2plugin_get_port_value(const char* port_symbol,
219 PORT_INPUT = 1, ///< Input port
220 PORT_OUTPUT = 1 << 1, ///< Output port
221 PORT_AUDIO = 1 << 2, ///< Audio (buffer of float)
222 PORT_CONTROL = 1 << 3, ///< Control (single float)
223 PORT_EVENT = 1 << 4, ///< Old event API event port
224 PORT_SEQUENCE = 1 << 5, ///< New atom API event port
225 PORT_MIDI = 1 << 6, ///< Event port understands MIDI
226 PORT_POSITION = 1 << 7, ///< Event port understands position
227 PORT_PATCHMSG = 1 << 8 ///< Event port supports patch:Message
230 typedef unsigned PortFlags;
232 std::vector<PortFlags> _port_flags;
233 std::vector<size_t> _port_minimumSize;
234 std::map<std::string,uint32_t> _port_indices;
236 /// Message send to/from UI via ports
243 bool write_to_ui(uint32_t index,
246 const uint8_t* body);
248 bool write_to(RingBuffer<uint8_t>* dest,
252 const uint8_t* body);
254 // Created on demand so the space is only consumed if necessary
255 RingBuffer<uint8_t>* _to_ui;
256 RingBuffer<uint8_t>* _from_ui;
259 const void* (*extension_data) (const char* uri);
262 LV2_DataAccess _data_access_extension_data;
263 LV2_Feature _data_access_feature;
264 LV2_Feature _instance_access_feature;
265 LV2_Feature _make_path_feature;
266 LV2_Feature _log_feature;
267 LV2_Feature _work_schedule_feature;
268 LV2_Feature _options_feature;
269 LV2_Feature _def_state_feature;
271 // Options passed to plugin
272 int32_t _block_length;
275 mutable unsigned _state_version;
278 bool _has_state_interface;
280 const std::string plugin_dir () const;
281 const std::string scratch_dir () const;
282 const std::string file_dir () const;
283 const std::string state_dir (unsigned num) const;
285 static char* lv2_state_make_path (void* host_data,
288 void init (const void* c_plugin, framecnt_t rate);
289 void allocate_atom_event_buffers ();
290 void run (pframes_t nsamples);
292 void latency_compute_run ();
293 std::string do_save_preset (std::string);
294 void do_remove_preset (std::string);
295 void find_presets ();
296 void add_state (XMLNode *) const;
300 class LIBARDOUR_API LV2PluginInfo : public PluginInfo , public boost::enable_shared_from_this<ARDOUR::LV2PluginInfo> {
302 LV2PluginInfo (const char* plugin_uri);
305 static PluginInfoList* discover ();
307 PluginPtr load (Session& session);
312 typedef boost::shared_ptr<LV2PluginInfo> LV2PluginInfoPtr;
314 } // namespace ARDOUR
316 #endif /* __ardour_lv2_plugin_h__ */