fix merge conflicts from master
[ardour.git] / gtk2_ardour / lv2_plugin_ui.cc
1 /*
2     Copyright (C) 2008-2012 Paul Davis
3     Author: David Robillard
4
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.
9
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.
14
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.
18 */
19
20 #include "ardour/lv2_plugin.h"
21 #include "ardour/session.h"
22 #include "pbd/error.h"
23
24 #include "ardour_ui.h"
25 #include "lv2_plugin_ui.h"
26
27 #include "lv2/lv2plug.in/ns/extensions/ui/ui.h"
28
29 #include <lilv/lilv.h>
30 #include <suil/suil.h>
31
32 #include "i18n.h"
33
34 using namespace ARDOUR;
35 using namespace Gtk;
36 using namespace PBD;
37
38 #define NS_UI "http://lv2plug.in/ns/extensions/ui#"
39
40 static SuilHost* ui_host = NULL;
41
42 void
43 LV2PluginUI::write_from_ui(void*       controller,
44                            uint32_t    port_index,
45                            uint32_t    buffer_size,
46                            uint32_t    format,
47                            const void* buffer)
48 {
49         LV2PluginUI* me = (LV2PluginUI*)controller;
50         if (format == 0) {
51                 if (port_index >= me->_controllables.size()) {
52                         return;
53                 }
54
55                 boost::shared_ptr<AutomationControl> ac = me->_controllables[port_index];
56                 if (ac) {
57                         ac->set_value(*(const float*)buffer);
58                 }
59         } else if (format == me->_lv2->urids.atom_eventTransfer) {
60
61                 const int cnt = me->_pi->get_count();
62                 for (int i=0; i < cnt; i++ ) {
63                         boost::shared_ptr<LV2Plugin> lv2i = boost::dynamic_pointer_cast<LV2Plugin> (me->_pi->plugin(i));
64                         lv2i->write_from_ui(port_index, format, buffer_size, (const uint8_t*)buffer);
65                 }
66         }
67 }
68
69 void
70 LV2PluginUI::write_to_ui(void*       controller,
71                          uint32_t    port_index,
72                          uint32_t    buffer_size,
73                          uint32_t    format,
74                          const void* buffer)
75 {
76         LV2PluginUI* me = (LV2PluginUI*)controller;
77         if (me->_inst) {
78                 suil_instance_port_event((SuilInstance*)me->_inst,
79                                          port_index, buffer_size, format, buffer);
80         }
81 }
82
83 uint32_t
84 LV2PluginUI::port_index(void* controller, const char* symbol)
85 {
86         return ((LV2PluginUI*)controller)->_lv2->port_index(symbol);
87 }
88
89 void
90 LV2PluginUI::touch(void*    controller,
91                    uint32_t port_index,
92                    bool     grabbed)
93 {
94         LV2PluginUI* me = (LV2PluginUI*)controller;
95         if (port_index >= me->_controllables.size()) {
96                 return;
97         }
98
99         ControllableRef control = me->_controllables[port_index];
100         if (grabbed) {
101                 control->start_touch(control->session().transport_frame());
102         } else {
103                 control->stop_touch(false, control->session().transport_frame());
104         }
105 }
106
107 void
108 LV2PluginUI::update_timeout()
109 {
110         _lv2->emit_to_ui(this, &LV2PluginUI::write_to_ui);
111 }
112
113 void
114 LV2PluginUI::on_external_ui_closed(void* controller)
115 {
116         LV2PluginUI* me = (LV2PluginUI*)controller;
117         me->_screen_update_connection.disconnect();
118         me->_external_ui_ptr = NULL;
119 }
120
121 void
122 LV2PluginUI::parameter_changed(uint32_t port_index, float val)
123 {
124         PlugUIBase::parameter_changed(port_index, val);
125
126         if (val != _values[port_index]) {
127                 parameter_update(port_index, val);
128         }
129 }
130
131 void
132 LV2PluginUI::parameter_update(uint32_t port_index, float val)
133 {
134         if (!_inst) {
135                 return;
136         }
137
138         suil_instance_port_event((SuilInstance*)_inst, port_index, 4, 0, &val);
139         _values[port_index] = val;
140 }
141
142 bool
143 LV2PluginUI::start_updating(GdkEventAny*)
144 {
145         if (!_output_ports.empty()) {
146                 _screen_update_connection.disconnect();
147                 _screen_update_connection = ARDOUR_UI::instance()->SuperRapidScreenUpdate.connect
148                         (sigc::mem_fun(*this, &LV2PluginUI::output_update));
149         }
150         return false;
151 }
152
153 bool
154 LV2PluginUI::stop_updating(GdkEventAny*)
155 {
156         //cout << "stop_updating" << endl;
157
158         if (!_output_ports.empty()) {
159                 _screen_update_connection.disconnect();
160         }
161         return false;
162 }
163
164 void
165 LV2PluginUI::output_update()
166 {
167         //cout << "output_update" << endl;
168         if (_external_ui_ptr) {
169                 LV2_EXTERNAL_UI_RUN(_external_ui_ptr);
170         }
171
172         /* FIXME only works with control output ports (which is all we support now anyway) */
173         uint32_t nports = _output_ports.size();
174         for (uint32_t i = 0; i < nports; ++i) {
175                 uint32_t index = _output_ports[i];
176                 parameter_changed(index, _lv2->get_parameter(index));
177         }
178
179 }
180
181 LV2PluginUI::LV2PluginUI(boost::shared_ptr<PluginInsert> pi,
182                          boost::shared_ptr<LV2Plugin>    lv2p)
183         : PlugUIBase(pi)
184         , _pi(pi)
185         , _lv2(lv2p)
186         , _gui_widget(NULL)
187         , _values(NULL)
188         , _external_ui_ptr(NULL)
189         , _inst(NULL)
190 {
191         _ardour_buttons_box.set_spacing (6);
192         _ardour_buttons_box.set_border_width (6);
193         _ardour_buttons_box.pack_end (focus_button, false, false);
194         _ardour_buttons_box.pack_end (bypass_button, false, false, 10);
195         _ardour_buttons_box.pack_end (delete_button, false, false);
196         _ardour_buttons_box.pack_end (save_button, false, false);
197         _ardour_buttons_box.pack_end (add_button, false, false);
198         _ardour_buttons_box.pack_end (_preset_combo, false, false);
199         _ardour_buttons_box.pack_end (_preset_modified, false, false);
200 }
201
202 void
203 LV2PluginUI::lv2ui_instantiate(const std::string& title)
204 {
205         bool          is_external_ui = _lv2->is_external_ui();
206         LV2_Feature** features_src   = const_cast<LV2_Feature**>(_lv2->features());
207         LV2_Feature** features       = const_cast<LV2_Feature**>(_lv2->features());
208         size_t        features_count = 0;
209         while (*features++) {
210                 features_count++;
211         }
212
213         Gtk::Alignment* container = NULL;
214         if (is_external_ui) {
215                 _external_ui_host.ui_closed       = LV2PluginUI::on_external_ui_closed;
216                 _external_ui_host.plugin_human_id = strdup(title.c_str());
217
218                 _external_ui_feature.URI  = LV2_EXTERNAL_UI_URI;
219                 _external_ui_feature.data = &_external_ui_host;
220
221                 ++features_count;
222                 features = (LV2_Feature**)malloc(
223                         sizeof(LV2_Feature*) * (features_count + 1));
224                 for (size_t i = 0; i < features_count - 1; ++i) {
225                         features[i] = features_src[i];
226                 }
227                 features[features_count - 1] = &_external_ui_feature;
228                 features[features_count]     = NULL;
229         } else {
230                 if (_ardour_buttons_box.get_parent()) {
231                         _ardour_buttons_box.get_parent()->remove(_ardour_buttons_box);
232                 }
233                 pack_start(_ardour_buttons_box, false, false);
234                 _ardour_buttons_box.show_all();
235
236                 _gui_widget = Gtk::manage((container = new Gtk::Alignment()));
237                 pack_start(*_gui_widget, true, true);
238                 _gui_widget->show();
239
240                 _parent_feature.URI  = LV2_UI__parent;
241                 _parent_feature.data = _gui_widget->gobj();
242
243                 ++features_count;
244                 features = (LV2_Feature**)malloc(
245                         sizeof(LV2_Feature*) * (features_count + 1));
246                 for (size_t i = 0; i < features_count - 1; ++i) {
247                         features[i] = features_src[i];
248                 }
249                 features[features_count - 1] = &_parent_feature;
250                 features[features_count]     = NULL;
251         }
252
253         if (!ui_host) {
254                 ui_host = suil_host_new(LV2PluginUI::write_from_ui,
255                                         LV2PluginUI::port_index,
256                                         NULL, NULL);
257                 suil_host_set_touch_func(ui_host, LV2PluginUI::touch);
258         }
259         const char* container_type = (is_external_ui)
260                 ? NS_UI "external"
261                 : NS_UI "GtkUI";
262
263         const LilvUI* ui = (const LilvUI*)_lv2->c_ui();
264         _inst = suil_instance_new(
265                 ui_host,
266                 this,
267                 container_type,
268                 _lv2->uri(),
269                 lilv_node_as_uri(lilv_ui_get_uri(ui)),
270                 lilv_node_as_uri((const LilvNode*)_lv2->c_ui_type()),
271                 lilv_uri_to_path(lilv_node_as_uri(lilv_ui_get_bundle_uri(ui))),
272                 lilv_uri_to_path(lilv_node_as_uri(lilv_ui_get_binary_uri(ui))),
273                 features);
274
275         free(features);
276
277 #define GET_WIDGET(inst) suil_instance_get_widget((SuilInstance*)inst);
278
279         const uint32_t num_ports = _lv2->num_ports();
280         for (uint32_t i = 0; i < num_ports; ++i) {
281                 if (_lv2->parameter_is_output(i)
282                     && _lv2->parameter_is_control(i)
283                     && is_update_wanted(i)) {
284                         _output_ports.push_back(i);
285                 }
286         }
287
288         _external_ui_ptr = NULL;
289         if (_inst) {
290                 if (!is_external_ui) {
291                         GtkWidget* c_widget = (GtkWidget*)GET_WIDGET(_inst);
292                         if (!c_widget) {
293                                 error << _("failed to get LV2 UI widget") << endmsg;
294                                 suil_instance_free((SuilInstance*)_inst);
295                                 _inst = NULL;
296                                 return;
297                         }
298                         if (!container->get_child()) {
299                                 // Suil didn't add the UI to the container for us, so do it now
300                                 container->add(*Gtk::manage(Glib::wrap(c_widget)));
301                         }
302                         container->show_all();
303                 } else {
304                         _external_ui_ptr = (struct lv2_external_ui*)GET_WIDGET(_inst);
305                 }
306         }
307
308         _values = new float[num_ports];
309         _controllables.resize(num_ports);
310         for (uint32_t i = 0; i < num_ports; ++i) {
311                 bool     ok;
312                 uint32_t port = _lv2->nth_parameter(i, ok);
313                 if (ok) {
314                         _values[port]        = _lv2->get_parameter(port);
315                         _controllables[port] = boost::dynamic_pointer_cast<ARDOUR::AutomationControl> (
316                                 insert->control(Evoral::Parameter(PluginAutomation, 0, port)));
317
318                         if (_lv2->parameter_is_control(port) && _lv2->parameter_is_input(port)) {
319                                 parameter_update(port, _values[port]);
320                         }
321                 }
322         }
323
324         if (_lv2->has_message_output()) {
325                 _lv2->enable_ui_emmission();
326                 ARDOUR_UI::instance()->SuperRapidScreenUpdate.connect(
327                         sigc::mem_fun(*this, &LV2PluginUI::update_timeout));
328         }
329 }
330
331 void
332 LV2PluginUI::lv2ui_free()
333 {
334         stop_updating (0);
335
336         if (_gui_widget) {
337                 remove (*_gui_widget);
338                 _gui_widget = NULL;
339         }
340
341         if (_inst) {
342                 suil_instance_free((SuilInstance*)_inst);
343                 _inst = NULL;
344         }
345 }
346
347 LV2PluginUI::~LV2PluginUI ()
348 {
349         if (_values) {
350                 delete[] _values;
351         }
352
353         /* Close and delete GUI. */
354         lv2ui_free();
355
356         _screen_update_connection.disconnect();
357
358         if (_lv2->is_external_ui()) {
359                 /* External UI is no longer valid.
360                    on_window_hide() will not try to use it if is NULL.
361                 */
362                 _external_ui_ptr = NULL;
363         }
364 }
365
366 int
367 LV2PluginUI::get_preferred_height()
368 {
369         Gtk::Requisition r = size_request();
370         return r.height;
371 }
372
373 int
374 LV2PluginUI::get_preferred_width()
375 {
376         Gtk::Requisition r = size_request();
377         return r.width;
378 }
379
380 bool
381 LV2PluginUI::resizable()
382 {
383         return _lv2->ui_is_resizable();
384 }
385
386 int
387 LV2PluginUI::package(Gtk::Window& win)
388 {
389         if (_external_ui_ptr) {
390                 _win_ptr = &win;
391         } else {
392                 /* forward configure events to plugin window */
393                 win.signal_configure_event().connect(
394                         sigc::mem_fun(*this, &LV2PluginUI::configure_handler));
395                 win.signal_map_event().connect(
396                         sigc::mem_fun(*this, &LV2PluginUI::start_updating));
397                 win.signal_unmap_event().connect(
398                         sigc::mem_fun(*this, &LV2PluginUI::stop_updating));
399         }
400         return 0;
401 }
402
403 bool
404 LV2PluginUI::configure_handler(GdkEventConfigure*)
405 {
406         std::cout << "CONFIGURE" << std::endl;
407         return false;
408 }
409
410 bool
411 LV2PluginUI::is_update_wanted(uint32_t /*index*/)
412 {
413         /* FIXME: use port notification properties
414            and/or new UI extension subscription methods
415         */
416         return true;
417 }
418
419 bool
420 LV2PluginUI::on_window_show(const std::string& title)
421 {
422         //cout << "on_window_show - " << title << endl; flush(cout);
423
424         if (_lv2->is_external_ui()) {
425                 if (_external_ui_ptr) {
426                         LV2_EXTERNAL_UI_SHOW(_external_ui_ptr);
427                         return false;
428                 }
429                 lv2ui_instantiate(title);
430                 if (!_external_ui_ptr) {
431                         return false;
432                 }
433
434                 LV2_EXTERNAL_UI_SHOW(_external_ui_ptr);
435                 _screen_update_connection.disconnect();
436                 _screen_update_connection = ARDOUR_UI::instance()->SuperRapidScreenUpdate.connect
437                         (sigc::mem_fun(*this, &LV2PluginUI::output_update));
438                 return false;
439         } else {
440                 lv2ui_instantiate("gtk2gui");
441         }
442
443         return true;
444 }
445
446 void
447 LV2PluginUI::on_window_hide()
448 {
449         //cout << "on_window_hide" << endl; flush(cout);
450
451         if (_external_ui_ptr) {
452                 LV2_EXTERNAL_UI_HIDE(_external_ui_ptr);
453                 //slv2_ui_instance_get_descriptor(_inst)->cleanup(_inst);
454                 //_external_ui_ptr = NULL;
455                 //_screen_update_connection.disconnect();
456         } else {
457                 lv2ui_free();
458         }
459 }