gtk2_ardour/lv2_plugin_ui.cc

   1 /*
   2     Copyright (C) 2008-2011 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
  21 #include "ardour/lv2_plugin.h"
  22 #include "ardour/plugin_manager.h"
  23 #include "ardour/processor.h"
  24
  25 #include "ardour_ui.h"
  26 #include "gui_thread.h"
  27 #include "lv2_plugin_ui.h"
  28
  29 #include "lv2_ui.h"
  30
  31 using namespace Gtk;
  32 using namespace ARDOUR;
  33 using namespace PBD;
  34
  35 #define NS_UI "http://lv2plug.in/ns/extensions/ui#"
  36
  37 #if defined(HAVE_NEW_SLV2) && defined(HAVE_SUIL)
  38 SuilHost* LV2PluginUI::ui_host = NULL;
  39 #endif
  40
  41 void
  42 LV2PluginUI::lv2_ui_write(void*       controller,
  43                           uint32_t    port_index,
  44                           uint32_t    /*buffer_size*/,
  45                           uint32_t    /*format*/,
  46                           const void* buffer)
  47 {
  48         LV2PluginUI* me = (LV2PluginUI*)controller;
  49         boost::shared_ptr<AutomationControl> ac = me->_controllables[port_index];
  50
  51         if (ac) {
  52                 ac->set_value(*(float*)buffer);
  53         }
  54 }
  55
  56 void
  57 LV2PluginUI::on_external_ui_closed(void* controller)
  58 {
  59         LV2PluginUI* me = (LV2PluginUI*)controller;
  60         me->_screen_update_connection.disconnect();
  61         me->_external_ui_ptr = NULL;
  62 }
  63
  64 void
  65 LV2PluginUI::parameter_changed(uint32_t port_index, float val)
  66 {
  67         PlugUIBase::parameter_changed(port_index, val);
  68
  69         if (val != _values[port_index]) {
  70                 parameter_update(port_index, val);
  71         }
  72 }
  73
  74 void
  75 LV2PluginUI::parameter_update(uint32_t port_index, float val)
  76 {
  77         if (!_inst) {
  78                 return;
  79         }
  80
  81 #ifdef HAVE_SUIL
  82         suil_instance_port_event(_inst, port_index, 4, 0, &val);
  83 #else
  84         const LV2UI_Descriptor* ui_desc   = slv2_ui_instance_get_descriptor(_inst);
  85         LV2UI_Handle            ui_handle = slv2_ui_instance_get_handle(_inst);
  86         if (ui_desc->port_event) {
  87                 ui_desc->port_event(ui_handle, port_index, 4, 0, &val);
  88         }
  89 #endif
  90         _values[port_index] = val;
  91 }
  92
  93 bool
  94 LV2PluginUI::start_updating(GdkEventAny*)
  95 {
  96         if (!_output_ports.empty()) {
  97                 _screen_update_connection.disconnect();
  98                 _screen_update_connection = ARDOUR_UI::instance()->RapidScreenUpdate.connect
  99                         (sigc::mem_fun(*this, &LV2PluginUI::output_update));
 100         }
 101         return false;
 102 }
 103
 104 bool
 105 LV2PluginUI::stop_updating(GdkEventAny*)
 106 {
 107         //cout << "stop_updating" << endl;
 108
 109         if ( //!_external_ui_ptr &&
 110             !_output_ports.empty()) {
 111                 _screen_update_connection.disconnect();
 112         }
 113         return false;
 114 }
 115
 116 void
 117 LV2PluginUI::output_update()
 118 {
 119         //cout << "output_update" << endl;
 120         if (_external_ui_ptr) {
 121                 LV2_EXTERNAL_UI_RUN(_external_ui_ptr);
 122         }
 123
 124         /* FIXME only works with control output ports (which is all we support now anyway) */
 125         uint32_t nports = _output_ports.size();
 126         for (uint32_t i = 0; i < nports; ++i) {
 127                 uint32_t index = _output_ports[i];
 128                 parameter_changed(index, _lv2->get_parameter(index));
 129         }
 130
 131 }
 132
 133 LV2PluginUI::LV2PluginUI(boost::shared_ptr<PluginInsert> pi,
 134                          boost::shared_ptr<LV2Plugin>    lv2p)
 135         : PlugUIBase(pi)
 136         , _lv2(lv2p)
 137         , _values(NULL)
 138         , _external_ui_ptr(NULL)
 139         , _inst(NULL)
 140 {
 141         if (!_lv2->is_external_ui()) {
 142                 lv2ui_instantiate("gtk2gui");
 143         }
 144 }
 145
 146 void
 147 LV2PluginUI::lv2ui_instantiate(const std::string& title)
 148 {
 149         LV2_Feature** features;
 150         LV2_Feature** features_src;
 151         LV2_Feature** features_dst;
 152         size_t        features_count;
 153         bool          is_external_ui;
 154
 155         is_external_ui = _lv2->is_external_ui();
 156
 157         if (is_external_ui) {
 158                 _external_ui_host.ui_closed       = LV2PluginUI::on_external_ui_closed;
 159                 _external_ui_host.plugin_human_id = strdup(title.c_str());
 160
 161                 _external_ui_feature.URI  = LV2_EXTERNAL_UI_URI;
 162                 _external_ui_feature.data = &_external_ui_host;
 163
 164                 features_src = features = (LV2_Feature**)_lv2->features();
 165                 features_count = 2;
 166                 while (*features++) {
 167                         features_count++;
 168                 }
 169                 features_dst = features = (LV2_Feature**)malloc(
 170                         sizeof(LV2_Feature*) * features_count);
 171                 features_dst[--features_count] = NULL;
 172                 features_dst[--features_count] = &_external_ui_feature;
 173                 while (features_count--) {
 174                         *features++ = *features_src++;
 175                 }
 176         } else {
 177                 features_dst = (LV2_Feature**)_lv2->features();
 178         }
 179
 180 #if defined(HAVE_NEW_SLV2) && defined(HAVE_SUIL)
 181         if (!LV2PluginUI::ui_host) {
 182                 LV2PluginUI::ui_host = suil_host_new(
 183                 LV2PluginUI::lv2_ui_write, NULL, NULL, NULL);
 184         }
 185         const char* container_type = (is_external_ui)
 186                 ? NS_UI "external"
 187                 : NS_UI "GtkUI";
 188
 189         SLV2UI ui = _lv2->slv2_ui();
 190         _inst = suil_instance_new(
 191                 LV2PluginUI::ui_host,
 192                 this,
 193                 container_type,
 194                 slv2_value_as_uri(slv2_plugin_get_uri(_lv2->slv2_plugin())),
 195                 slv2_value_as_uri(slv2_ui_get_uri(ui)),
 196                 slv2_value_as_uri(_lv2->ui_type()),
 197                 slv2_uri_to_path(slv2_value_as_uri(slv2_ui_get_bundle_uri(ui))),
 198                 slv2_uri_to_path(slv2_value_as_uri(slv2_ui_get_binary_uri(ui))),
 199                 features_dst);
 200 #else
 201         _inst = slv2_ui_instantiate(
 202                 _lv2->slv2_plugin(), _lv2->slv2_ui(), LV2PluginUI::lv2_ui_write, this,
 203                 features_dst);
 204 #endif
 205
 206         if (is_external_ui) {
 207                 free(features_dst);
 208         }
 209
 210 #if defined(HAVE_NEW_SLV2) && defined(HAVE_SUIL)
 211 #define GET_WIDGET(inst) suil_instance_get_widget(inst);
 212 #else
 213 #define GET_WIDGET(inst) slv2_ui_instance_get_widget(inst);
 214 #endif
 215
 216         uint32_t num_ports = slv2_plugin_get_num_ports(_lv2->slv2_plugin());
 217         for (uint32_t i = 0; i < num_ports; ++i) {
 218                 if (_lv2->parameter_is_output(i)
 219                     && _lv2->parameter_is_control(i)
 220                     && is_update_wanted(i)) {
 221                         _output_ports.push_back(i);
 222                 }
 223         }
 224
 225         _external_ui_ptr = NULL;
 226         if (_inst) {
 227                 if (!is_external_ui) {
 228                         GtkWidget* c_widget = (GtkWidget*)GET_WIDGET(_inst);
 229                         _gui_widget = Glib::wrap(c_widget);
 230                         _gui_widget->show_all();
 231                         pack_start(*_gui_widget, true, true);
 232                 } else {
 233                         _external_ui_ptr = (struct lv2_external_ui*)GET_WIDGET(_inst);
 234                 }
 235         }
 236
 237         _values = new float[num_ports];
 238         _controllables.resize(num_ports);
 239         for (uint32_t i = 0; i < num_ports; ++i) {
 240                 bool     ok;
 241                 uint32_t port = _lv2->nth_parameter(i, ok);
 242                 if (ok) {
 243                         _values[port]        = _lv2->get_parameter(port);
 244                         _controllables[port] = boost::dynamic_pointer_cast<ARDOUR::AutomationControl> (
 245                                 insert->control(Evoral::Parameter(PluginAutomation, 0, port)));
 246
 247                         if (_lv2->parameter_is_control(port) && _lv2->parameter_is_input(port)) {
 248                                 parameter_update(port, _values[port]);
 249                         }
 250                 }
 251         }
 252 }
 253
 254 LV2PluginUI::~LV2PluginUI ()
 255 {
 256         //cout << "LV2PluginUI destructor called" << endl;
 257
 258         if (_values) {
 259                 delete[] _values;
 260         }
 261
 262         /* Close and delete GUI. */
 263 #if defined(HAVE_NEW_SLV2) && defined(HAVE_SUIL)
 264         suil_instance_free(_inst);
 265 #else
 266         const LV2UI_Descriptor* ui_desc   = slv2_ui_instance_get_descriptor(_inst);
 267         LV2UI_Handle            ui_handle = slv2_ui_instance_get_handle(_inst);
 268
 269         if (ui_desc) {
 270                 ui_desc->cleanup(ui_handle);
 271         }
 272 #endif
 273
 274         _screen_update_connection.disconnect();
 275
 276         if (_lv2->is_external_ui()) {
 277                 /* External UI is no longer valid.
 278                    on_window_hide() will not try to use it if is NULL.
 279                 */
 280                 _external_ui_ptr = NULL;
 281         }
 282 }
 283
 284 int
 285 LV2PluginUI::get_preferred_height()
 286 {
 287         Gtk::Requisition r = size_request();
 288         return r.height;
 289 }
 290
 291 int
 292 LV2PluginUI::get_preferred_width()
 293 {
 294         Gtk::Requisition r = size_request();
 295         return r.width;
 296 }
 297
 298 int
 299 LV2PluginUI::package(Gtk::Window& win)
 300 {
 301         if (_external_ui_ptr) {
 302                 _win_ptr = &win;
 303         } else {
 304                 /* forward configure events to plugin window */
 305                 win.signal_configure_event().connect(
 306                         sigc::mem_fun(*this, &LV2PluginUI::configure_handler));
 307                 win.signal_map_event().connect(
 308                         sigc::mem_fun(*this, &LV2PluginUI::start_updating));
 309                 win.signal_unmap_event().connect(
 310                         sigc::mem_fun(*this, &LV2PluginUI::stop_updating));
 311         }
 312         return 0;
 313 }
 314
 315 bool
 316 LV2PluginUI::configure_handler(GdkEventConfigure*)
 317 {
 318         std::cout << "CONFIGURE" << std::endl;
 319         return false;
 320 }
 321
 322 bool
 323 LV2PluginUI::is_update_wanted(uint32_t /*index*/)
 324 {
 325         /* FIXME: use port notification properties
 326            and/or new UI extension subscription methods
 327         */
 328         return true;
 329 }
 330
 331 bool
 332 LV2PluginUI::on_window_show(const std::string& title)
 333 {
 334         //cout << "on_window_show - " << title << endl; flush(cout);
 335
 336         if (_lv2->is_external_ui()) {
 337                 if (_external_ui_ptr) {
 338                         LV2_EXTERNAL_UI_SHOW(_external_ui_ptr);
 339                         return false;
 340                 }
 341                 lv2ui_instantiate(title);
 342                 if (!_external_ui_ptr) {
 343                         return false;
 344                 }
 345
 346                 LV2_EXTERNAL_UI_SHOW(_external_ui_ptr);
 347                 _screen_update_connection.disconnect();
 348                 _screen_update_connection = ARDOUR_UI::instance()->RapidScreenUpdate.connect
 349                         (sigc::mem_fun(*this, &LV2PluginUI::output_update));
 350                 return false;
 351         }
 352
 353         return true;
 354 }
 355
 356 void
 357 LV2PluginUI::on_window_hide()
 358 {
 359         //cout << "on_window_hide" << endl; flush(cout);
 360
 361         if (_external_ui_ptr) {
 362                 LV2_EXTERNAL_UI_HIDE(_external_ui_ptr);
 363                 //slv2_ui_instance_get_descriptor(_inst)->cleanup(_inst);
 364                 //_external_ui_ptr = NULL;
 365                 //_screen_update_connection.disconnect();
 366         }
 367 }