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Carla
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Audio plugin host https://kx.studio/carla
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Carla/source/carla_host.py

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  1. #!/usr/bin/env python3

  2. # -*- coding: utf-8 -*-

  3. 

  4. # Carla host code

  5. # Copyright (C) 2011-2014 Filipe Coelho <falktx@falktx.com>

  6. #

  7. # This program is free software; you can redistribute it and/or

  8. # modify it under the terms of the GNU General Public License as

  9. # published by the Free Software Foundation; either version 2 of

  10. # the License, or any later version.

  11. #

  12. # This program is distributed in the hope that it will be useful,

  13. # but WITHOUT ANY WARRANTY; without even the implied warranty of

  14. # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

  15. # GNU General Public License for more details.

  16. #

  17. # For a full copy of the GNU General Public License see the doc/GPL.txt file.

  18. 

  19. # ------------------------------------------------------------------------------------------------------------

  20. # Imports (Config)

  21. 

  22. from carla_config import *

  23. 

  24. # ------------------------------------------------------------------------------------------------------------

  25. # Imports (Global)

  26. 

  27. if config_UseQt5:

  28.     from PyQt5.QtCore import qCritical, QFileInfo, QModelIndex, QTimer

  29.     from PyQt5.QtGui import QPalette

  30.     from PyQt5.QtWidgets import QAction, QApplication, QFileSystemModel, QListWidgetItem, QMainWindow

  31. else:

  32.     from PyQt4.QtCore import qCritical, QFileInfo, QModelIndex, QTimer

  33.     from PyQt4.QtGui import QApplication, QFileSystemModel, QListWidgetItem, QMainWindow, QPalette

  34. 

  35. # ------------------------------------------------------------------------------------------------------------

  36. # Imports (Custom)

  37. 

  38. import ui_carla_host

  39. 

  40. from carla_app import *

  41. from carla_database import *

  42. from carla_settings import *

  43. from carla_widgets import *

  44. 

  45. # ------------------------------------------------------------------------------------------------------------

  46. # PatchCanvas defines

  47. 

  48. CANVAS_ANTIALIASING_SMALL = 1

  49. CANVAS_EYECANDY_SMALL     = 1

  50. 

  51. # ------------------------------------------------------------------------------------------------------------

  52. # Session Management support

  53. 

  54. LADISH_APP_NAME = os.getenv("LADISH_APP_NAME")

  55. NSM_URL         = os.getenv("NSM_URL")

  56. 

  57. # ------------------------------------------------------------------------------------------------------------

  58. # Dummy widget

  59. 

  60. class CarlaDummyW(object):

  61.     def __init__(self, parent):

  62.         object.__init__(self)

  63. 

  64.     # -----------------------------------------------------------------

  65. 

  66.     def getPluginCount(self):

  67.         return 0

  68. 

  69.     # -----------------------------------------------------------------

  70. 

  71.     def addPlugin(self, pluginId, isProjectLoading):

  72.         pass

  73. 

  74.     def removePlugin(self, pluginId):

  75.         pass

  76. 

  77.     def renamePlugin(self, pluginId, newName):

  78.         pass

  79. 

  80.     def disablePlugin(self, pluginId, errorMsg):

  81.         pass

  82. 

  83.     def removeAllPlugins(self):

  84.         pass

  85. 

  86.     # -----------------------------------------------------------------

  87. 

  88.     def engineStarted(self):

  89.         pass

  90. 

  91.     def engineStopped(self):

  92.         pass

  93. 

  94.     def engineChanged(self):

  95.         pass

  96. 

  97.     # -----------------------------------------------------------------

  98. 

  99.     def idleFast(self):

  100.         pass

  101. 

  102.     def idleSlow(self):

  103.         pass

  104. 

  105.     # -----------------------------------------------------------------

  106. 

  107.     def projectLoadingStarted(self):

  108.         pass

  109. 

  110.     def projectLoadingFinished(self):

  111.         pass

  112. 

  113.     # -----------------------------------------------------------------

  114. 

  115.     def saveSettings(self, settings):

  116.         pass

  117. 

  118.     def showEditDialog(self, pluginId):

  119.         pass

  120. 

  121. # ------------------------------------------------------------------------------------------------------------

  122. # Host Window

  123. 

  124. class HostWindow(QMainWindow):

  125.     # signals

  126.     DebugCallback = pyqtSignal(int, int, int, float, str)

  127.     PluginAddedCallback = pyqtSignal(int, str)

  128.     PluginRemovedCallback = pyqtSignal(int)

  129.     PluginRenamedCallback = pyqtSignal(int, str)

  130.     PluginUnavailableCallback = pyqtSignal(int, str)

  131.     ParameterValueChangedCallback = pyqtSignal(int, int, float)

  132.     ParameterDefaultChangedCallback = pyqtSignal(int, int, float)

  133.     ParameterMidiCcChangedCallback = pyqtSignal(int, int, int)

  134.     ParameterMidiChannelChangedCallback = pyqtSignal(int, int, int)

  135.     ProgramChangedCallback = pyqtSignal(int, int)

  136.     MidiProgramChangedCallback = pyqtSignal(int, int)

  137.     OptionChangedCallback = pyqtSignal(int, int, bool)

  138.     UiStateChangedCallback = pyqtSignal(int, int)

  139.     NoteOnCallback = pyqtSignal(int, int, int, int)

  140.     NoteOffCallback = pyqtSignal(int, int, int)

  141.     UpdateCallback = pyqtSignal(int)

  142.     ReloadInfoCallback = pyqtSignal(int)

  143.     ReloadParametersCallback = pyqtSignal(int)

  144.     ReloadProgramsCallback = pyqtSignal(int)

  145.     ReloadAllCallback = pyqtSignal(int)

  146.     PatchbayClientAddedCallback = pyqtSignal(int, int, int, str)

  147.     PatchbayClientRemovedCallback = pyqtSignal(int)

  148.     PatchbayClientRenamedCallback = pyqtSignal(int, str)

  149.     PatchbayClientDataChangedCallback = pyqtSignal(int, int, int)

  150.     PatchbayPortAddedCallback = pyqtSignal(int, int, int, str)

  151.     PatchbayPortRemovedCallback = pyqtSignal(int, int)

  152.     PatchbayPortRenamedCallback = pyqtSignal(int, int, str)

  153.     PatchbayConnectionAddedCallback = pyqtSignal(int, int, int, int, int)

  154.     PatchbayConnectionRemovedCallback = pyqtSignal(int, int, int)

  155.     EngineStartedCallback = pyqtSignal(int, int, str)

  156.     EngineStoppedCallback = pyqtSignal()

  157.     ProcessModeChangedCallback = pyqtSignal(int)

  158.     TransportModeChangedCallback = pyqtSignal(int)

  159.     BufferSizeChangedCallback = pyqtSignal(int)

  160.     SampleRateChangedCallback = pyqtSignal(float)

  161.     InfoCallback = pyqtSignal(str)

  162.     ErrorCallback = pyqtSignal(str)

  163.     QuitCallback = pyqtSignal()

  164.     SIGTERM = pyqtSignal()

  165.     SIGUSR1 = pyqtSignal()

  166. 

  167.     def __init__(self, parent):

  168.         QMainWindow.__init__(self, parent)

  169.         self.ui = ui_carla_host.Ui_CarlaHostW()

  170.         self.ui.setupUi(self)

  171. 

  172.         if False:

  173.             # kdevelop likes this :)

  174.             gCarla.gui  = self

  175.             gCarla.host = Host("")

  176.             self.fContainer = CarlaDummyW(self)

  177. 

  178.         if MACOS and config_UseQt5:

  179.             self.ui.act_file_quit.setMenuRole(QAction.QuitRole)

  180.             self.ui.act_settings_configure.setMenuRole(QAction.PreferencesRole)

  181.             self.ui.act_help_about.setMenuRole(QAction.AboutRole)

  182.             self.ui.act_help_about_juce.setMenuRole(QAction.AboutQtRole)

  183.             self.ui.act_help_about_qt.setMenuRole(QAction.AboutQtRole)

  184.             self.ui.menu_Settings.setTitle("Panels")

  185.             #self.ui.menu_Help.hide()

  186. 

  187.         # -------------------------------------------------------------

  188.         # Internal stuff

  189. 

  190.         self.fIdleTimerFast = 0

  191.         self.fIdleTimerSlow = 0

  192. 

  193.         self.fIsProjectLoading = False

  194.         self.fProjectFilename  = ""

  195. 

  196.         self.fLadspaRdfNeedsUpdate = True

  197.         self.fLadspaRdfList = []

  198. 

  199.         self.fLastTransportFrame = 0

  200.         self.fLastTransportState = False

  201.         self.fTransportText = ""

  202. 

  203.         # when true, call engineChanged() asap

  204.         self.fEngineChanged = False

  205. 

  206.         # first attempt of auto-start engine doesn't show an error

  207.         self.fFirstEngineInit = True

  208. 

  209.         self.fSavedSettings = {}

  210. 

  211.         if gCarla.isPlugin:

  212.             self.fClientName         = "Carla-Plugin"

  213.             self.fSessionManagerName = "Plugin"

  214.         elif LADISH_APP_NAME:

  215.             self.fClientName         = LADISH_APP_NAME

  216.             self.fSessionManagerName = "LADISH"

  217.         elif NSM_URL:

  218.             self.fClientName         = "Carla" # "Carla.tmp"

  219.             self.fSessionManagerName = "Non Session Manager"

  220.         else:

  221.             self.fClientName         = "Carla"

  222.             self.fSessionManagerName = ""

  223. 

  224.         # -------------------------------------------------------------

  225.         # Load Settings

  226. 

  227.         self.loadSettings(True)

  228. 

  229.         # -------------------------------------------------------------

  230.         # Set up GUI (engine stopped)

  231. 

  232.         if gCarla.isPlugin:

  233.             self.ui.act_engine_start.setEnabled(False)

  234.             self.ui.menu_Engine.setEnabled(False)

  235.         else:

  236.             self.ui.act_engine_start.setEnabled(True)

  237. 

  238.         if self.fSessionManagerName:

  239.             self.ui.act_file_new.setEnabled(False)

  240. 

  241.         self.ui.act_file_open.setEnabled(False)

  242.         self.ui.act_file_save.setEnabled(False)

  243.         self.ui.act_file_save_as.setEnabled(False)

  244.         self.ui.act_engine_stop.setEnabled(False)

  245.         self.ui.act_plugin_remove_all.setEnabled(False)

  246. 

  247.         if gCarla.externalPatchbay:

  248.             self.ui.act_canvas_show_internal.setChecked(False)

  249.             self.ui.act_canvas_show_external.setChecked(True)

  250.         else:

  251.             self.ui.act_canvas_show_internal.setChecked(True)

  252.             self.ui.act_canvas_show_external.setChecked(False)

  253. 

  254.         self.ui.menu_PluginMacros.setEnabled(False)

  255.         self.ui.menu_Canvas.setEnabled(False)

  256. 

  257.         self.ui.dockWidgetTitleBar = QWidget(self)

  258.         self.ui.dockWidget.setTitleBarWidget(self.ui.dockWidgetTitleBar)

  259. 

  260.         self.setTransportMenuEnabled(False)

  261. 

  262.         # -------------------------------------------------------------

  263.         # Set up GUI (disk)

  264. 

  265.         self.fDirModel = QFileSystemModel(self)

  266.         self.fDirModel.setRootPath(HOME)

  267. 

  268.         if gCarla.host is not None:

  269.             self.fDirModel.setNameFilters(gCarla.host.get_supported_file_extensions().split(";"))

  270. 

  271.         self.ui.fileTreeView.setModel(self.fDirModel)

  272.         self.ui.fileTreeView.setRootIndex(self.fDirModel.index(HOME))

  273.         self.ui.fileTreeView.setColumnHidden(1, True)

  274.         self.ui.fileTreeView.setColumnHidden(2, True)

  275.         self.ui.fileTreeView.setColumnHidden(3, True)

  276.         self.ui.fileTreeView.setHeaderHidden(True)

  277. 

  278.         # -------------------------------------------------------------

  279.         # Set up GUI (disk)

  280. 

  281.         #self.item1 = QListWidgetItem(self.ui.lw_plugins)

  282.         #self.item1.setFlags(Qt.ItemIsSelectable|Qt.ItemIsEnabled|Qt.ItemIsDragEnabled)

  283.         #self.item1.setIcon(QIcon(":/bitmaps/thumbs/zita-rev1.png"))

  284.         #self.item1.setText("zita-rev1")

  285.         #item1.setTextAlignment(Qt.ali)

  286.         #self.ui.lw_plugins.()

  287. 

  288.         # -------------------------------------------------------------

  289. 

  290.         self.setProperWindowTitle()

  291. 

  292.         # -------------------------------------------------------------

  293.         # Connect actions to functions

  294. 

  295.         self.ui.act_file_new.triggered.connect(self.slot_fileNew)

  296.         self.ui.act_file_open.triggered.connect(self.slot_fileOpen)

  297.         self.ui.act_file_save.triggered.connect(self.slot_fileSave)

  298.         self.ui.act_file_save_as.triggered.connect(self.slot_fileSaveAs)

  299. 

  300.         self.ui.act_engine_start.triggered.connect(self.slot_engineStart)

  301.         self.ui.act_engine_stop.triggered.connect(self.slot_engineStop)

  302. 

  303.         self.ui.act_plugin_add.triggered.connect(self.slot_pluginAdd)

  304.         self.ui.act_plugin_add2.triggered.connect(self.slot_pluginAdd)

  305.         self.ui.act_plugin_remove_all.triggered.connect(self.slot_pluginRemoveAll)

  306. 

  307.         self.ui.act_transport_play.triggered.connect(self.slot_transportPlayPause)

  308.         self.ui.act_transport_stop.triggered.connect(self.slot_transportStop)

  309.         self.ui.act_transport_backwards.triggered.connect(self.slot_transportBackwards)

  310.         self.ui.act_transport_forwards.triggered.connect(self.slot_transportForwards)

  311. 

  312.         self.ui.act_help_about.triggered.connect(self.slot_aboutCarla)

  313.         self.ui.act_help_about_juce.triggered.connect(self.slot_aboutJuce)

  314.         self.ui.act_help_about_qt.triggered.connect(self.slot_aboutQt)

  315. 

  316.         self.ui.cb_disk.currentIndexChanged.connect(self.slot_diskFolderChanged)

  317.         self.ui.b_disk_add.clicked.connect(self.slot_diskFolderAdd)

  318.         self.ui.b_disk_remove.clicked.connect(self.slot_diskFolderRemove)

  319.         self.ui.fileTreeView.doubleClicked.connect(self.slot_fileTreeDoubleClicked)

  320. 

  321.         self.DebugCallback.connect(self.slot_handleDebugCallback)

  322. 

  323.         self.PluginAddedCallback.connect(self.slot_handlePluginAddedCallback)

  324.         self.PluginRemovedCallback.connect(self.slot_handlePluginRemovedCallback)

  325.         self.PluginRenamedCallback.connect(self.slot_handlePluginRenamedCallback)

  326.         self.PluginUnavailableCallback.connect(self.slot_handlePluginUnavailableCallback)

  327. 

  328.         # parameter (rack, patchbay)

  329.         # program, midi-program, ui-state (rack, patchbay)

  330.         # note on, off (rack, patchbay)

  331.         # update, reload (rack, patchbay)

  332.         # patchbay

  333. 

  334.         self.EngineStartedCallback.connect(self.slot_handleEngineStartedCallback)

  335.         self.EngineStoppedCallback.connect(self.slot_handleEngineStoppedCallback)

  336. 

  337.         self.ProcessModeChangedCallback.connect(self.slot_handleProcessModeChangedCallback)

  338.         self.TransportModeChangedCallback.connect(self.slot_handleTransportModeChangedCallback)

  339. 

  340.         self.BufferSizeChangedCallback.connect(self.slot_handleBufferSizeChangedCallback)

  341.         self.SampleRateChangedCallback.connect(self.slot_handleSampleRateChangedCallback)

  342. 

  343.         self.InfoCallback.connect(self.slot_handleInfoCallback)

  344.         self.ErrorCallback.connect(self.slot_handleErrorCallback)

  345.         self.QuitCallback.connect(self.slot_handleQuitCallback)

  346. 

  347.         self.SIGUSR1.connect(self.slot_handleSIGUSR1)

  348.         self.SIGTERM.connect(self.slot_handleSIGTERM)

  349. 

  350.         # -------------------------------------------------------------

  351.         # Final setup

  352. 

  353.         QTimer.singleShot(0, self.slot_engineStart)

  354. 

  355.     # -----------------------------------------------------------------

  356.     # Called by containers

  357. 

  358.     def openSettingsWindow(self, hasCanvas, hasCanvasGL):

  359.         hasEngine = bool(self.fSessionManagerName != "Non Session Manager")

  360.         dialog = CarlaSettingsW(self, gCarla.host, hasCanvas, hasCanvasGL, hasEngine)

  361.         return dialog.exec_()

  362. 

  363.     def setupContainer(self, showCanvas, canvasThemeData = []):

  364.         if showCanvas:

  365.             canvasWidth, canvasHeight, canvasBg, canvasBrush, canvasPen = canvasThemeData

  366.             self.ui.miniCanvasPreview.setViewTheme(canvasBg, canvasBrush, canvasPen)

  367.             self.ui.miniCanvasPreview.init(self.fContainer.scene, canvasWidth, canvasHeight, self.fSavedSettings[CARLA_KEY_CUSTOM_PAINTING])

  368.         else:

  369.             self.ui.act_canvas_arrange.setVisible(False)

  370.             self.ui.act_canvas_print.setVisible(False)

  371.             self.ui.act_canvas_refresh.setVisible(False)

  372.             self.ui.act_canvas_save_image.setVisible(False)

  373.             self.ui.act_canvas_zoom_100.setVisible(False)

  374.             self.ui.act_canvas_zoom_fit.setVisible(False)

  375.             self.ui.act_canvas_zoom_in.setVisible(False)

  376.             self.ui.act_canvas_zoom_out.setVisible(False)

  377.             self.ui.act_settings_show_meters.setVisible(False)

  378.             self.ui.act_settings_show_keyboard.setVisible(False)

  379.             self.ui.menu_Canvas.setEnabled(False)

  380.             self.ui.menu_Canvas.setVisible(False)

  381.             self.ui.menu_Canvas_Zoom.setEnabled(False)

  382.             self.ui.menu_Canvas_Zoom.setVisible(False)

  383.             self.ui.miniCanvasPreview.hide()

  384. 

  385.         self.setCentralWidget(self.fContainer)

  386.         self.ui.centralwidget = self.fContainer

  387. 

  388.     def updateContainer(self, canvasThemeData):

  389.         canvasWidth, canvasHeight, canvasBg, canvasBrush, canvasPen = canvasThemeData

  390.         self.ui.miniCanvasPreview.setViewTheme(canvasBg, canvasBrush, canvasPen)

  391.         self.ui.miniCanvasPreview.init(self.fContainer.scene, canvasWidth, canvasHeight, self.fSavedSettings[CARLA_KEY_CUSTOM_PAINTING])

  392. 

  393.     # -----------------------------------------------------------------

  394.     # Internal stuff (files)

  395. 

  396.     def loadProjectNow(self):

  397.         if not self.fProjectFilename:

  398.             return qCritical("ERROR: loading project without filename set")

  399. 

  400.         self.fContainer.projectLoadingStarted()

  401.         self.fIsProjectLoading = True

  402. 

  403.         if gCarla.host is not None:

  404.             gCarla.host.load_project(self.fProjectFilename)

  405. 

  406.         self.fIsProjectLoading = False

  407.         self.fContainer.projectLoadingFinished()

  408. 

  409.     @pyqtSlot()

  410.     def slot_loadProjectNow(self):

  411.         self.loadProjectNow()

  412. 

  413.     def loadProjectLater(self, filename):

  414.         self.fProjectFilename = QFileInfo(filename).absoluteFilePath()

  415.         self.setProperWindowTitle()

  416.         QTimer.singleShot(0, self.slot_loadProjectNow)

  417. 

  418.     def saveProjectNow(self):

  419.         if not self.fProjectFilename:

  420.             return qCritical("ERROR: saving project without filename set")

  421. 

  422.         gCarla.host.save_project(self.fProjectFilename)

  423. 

  424.     # -----------------------------------------------------------------

  425.     # Internal stuff (engine)

  426. 

  427.     def setEngineSettings(self, settings = None):

  428.         if self.fSessionManagerName == "Non Session Manager":

  429.             return "JACK"

  430. 

  431.         if settings is None: settings = QSettings()

  432. 

  433.         # -------------------------------------------------------------

  434.         # read settings (engine base)

  435. 

  436.         # bool values

  437.         try:

  438.             forceStereo = settings.value(CARLA_KEY_ENGINE_FORCE_STEREO, CARLA_DEFAULT_FORCE_STEREO, type=bool)

  439.         except:

  440.             forceStereo = CARLA_DEFAULT_FORCE_STEREO

  441. 

  442.         try:

  443.             preferPluginBridges = settings.value(CARLA_KEY_ENGINE_PREFER_PLUGIN_BRIDGES, CARLA_DEFAULT_PREFER_PLUGIN_BRIDGES, type=bool)

  444.         except:

  445.             preferPluginBridges = CARLA_DEFAULT_PREFER_PLUGIN_BRIDGES

  446. 

  447.         try:

  448.             preferUiBridges = settings.value(CARLA_KEY_ENGINE_PREFER_UI_BRIDGES, CARLA_DEFAULT_PREFER_UI_BRIDGES, type=bool)

  449.         except:

  450.             preferUiBridges = CARLA_DEFAULT_PREFER_UI_BRIDGES

  451. 

  452.         try:

  453.             uisAlwaysOnTop = settings.value(CARLA_KEY_ENGINE_UIS_ALWAYS_ON_TOP, CARLA_DEFAULT_UIS_ALWAYS_ON_TOP, type=bool)

  454.         except:

  455.             uisAlwaysOnTop = CARLA_DEFAULT_UIS_ALWAYS_ON_TOP

  456. 

  457.         # int values

  458.         try:

  459.             maxParameters = settings.value(CARLA_KEY_ENGINE_MAX_PARAMETERS, CARLA_DEFAULT_MAX_PARAMETERS, type=int)

  460.         except:

  461.             maxParameters = CARLA_DEFAULT_MAX_PARAMETERS

  462. 

  463.         try:

  464.             uiBridgesTimeout = settings.value(CARLA_KEY_ENGINE_UI_BRIDGES_TIMEOUT, CARLA_DEFAULT_UI_BRIDGES_TIMEOUT, type=int)

  465.         except:

  466.             uiBridgesTimeout = CARLA_DEFAULT_UI_BRIDGES_TIMEOUT

  467. 

  468.         # -------------------------------------------------------------

  469.         # read settings (plugin paths)

  470. 

  471.         LADSPA_PATH = toList(settings.value(CARLA_KEY_PATHS_LADSPA, CARLA_DEFAULT_LADSPA_PATH))

  472.         DSSI_PATH   = toList(settings.value(CARLA_KEY_PATHS_DSSI,   CARLA_DEFAULT_DSSI_PATH))

  473.         LV2_PATH    = toList(settings.value(CARLA_KEY_PATHS_LV2,    CARLA_DEFAULT_LV2_PATH))

  474.         VST_PATH    = toList(settings.value(CARLA_KEY_PATHS_VST,    CARLA_DEFAULT_VST_PATH))

  475.         VST3_PATH   = toList(settings.value(CARLA_KEY_PATHS_VST3,   CARLA_DEFAULT_VST3_PATH))

  476.         AU_PATH     = toList(settings.value(CARLA_KEY_PATHS_AU,     CARLA_DEFAULT_AU_PATH))

  477.         GIG_PATH    = toList(settings.value(CARLA_KEY_PATHS_GIG,    CARLA_DEFAULT_GIG_PATH))

  478.         SF2_PATH    = toList(settings.value(CARLA_KEY_PATHS_SF2,    CARLA_DEFAULT_SF2_PATH))

  479.         SFZ_PATH    = toList(settings.value(CARLA_KEY_PATHS_SFZ,    CARLA_DEFAULT_SFZ_PATH))

  480. 

  481.         # -------------------------------------------------------------

  482.         # read settings (other)

  483. 

  484.         # int values

  485.         try:

  486.             useCustomSkins = settings.value(CARLA_KEY_MAIN_USE_CUSTOM_SKINS, CARLA_DEFAULT_MAIN_USE_CUSTOM_SKINS, type=bool)

  487.         except:

  488.             useCustomSkins = CARLA_DEFAULT_MAIN_USE_CUSTOM_SKINS

  489. 

  490.         # -------------------------------------------------------------

  491.         # read settings (engine advanced)

  492. 

  493.         if gCarla.isPlugin:

  494.             audioDriver = "Plugin"

  495. 

  496.         else:

  497.             # enums

  498.             try:

  499.                 processMode = settings.value(CARLA_KEY_ENGINE_PROCESS_MODE, CARLA_DEFAULT_PROCESS_MODE, type=int)

  500.             except:

  501.                 processMode = CARLA_DEFAULT_PROCESS_MODE

  502. 

  503.             try:

  504.                 transportMode = settings.value(CARLA_KEY_ENGINE_TRANSPORT_MODE, CARLA_DEFAULT_TRANSPORT_MODE, type=int)

  505.             except:

  506.                 transportMode = CARLA_DEFAULT_TRANSPORT_MODE

  507. 

  508.             # driver name

  509.             try:

  510.                 audioDriver = settings.value(CARLA_KEY_ENGINE_AUDIO_DRIVER, CARLA_DEFAULT_AUDIO_DRIVER, type=str)

  511.             except:

  512.                 audioDriver = CARLA_DEFAULT_AUDIO_DRIVER

  513. 

  514.             # driver options

  515.             try:

  516.                 audioDevice = settings.value("%s%s/Device" % (CARLA_KEY_ENGINE_DRIVER_PREFIX, audioDriver), "", type=str)

  517.             except:

  518.                 audioDevice = ""

  519. 

  520.             try:

  521.                 audioNumPeriods = settings.value("%s%s/NumPeriods" % (CARLA_KEY_ENGINE_DRIVER_PREFIX, audioDriver), CARLA_DEFAULT_AUDIO_NUM_PERIODS, type=int)

  522.             except:

  523.                 audioNumPeriods = CARLA_DEFAULT_AUDIO_NUM_PERIODS

  524. 

  525.             try:

  526.                 audioBufferSize = settings.value("%s%s/BufferSize" % (CARLA_KEY_ENGINE_DRIVER_PREFIX, audioDriver), CARLA_DEFAULT_AUDIO_BUFFER_SIZE, type=int)

  527.             except:

  528.                 audioBufferSize = CARLA_DEFAULT_AUDIO_BUFFER_SIZE

  529. 

  530.             try:

  531.                 audioSampleRate = settings.value("%s%s/SampleRate" % (CARLA_KEY_ENGINE_DRIVER_PREFIX, audioDriver), CARLA_DEFAULT_AUDIO_SAMPLE_RATE, type=int)

  532.             except:

  533.                 audioSampleRate = CARLA_DEFAULT_AUDIO_SAMPLE_RATE

  534. 

  535.             # -------------------------------------------------------------

  536.             # fix things if needed

  537. 

  538.             if processMode == ENGINE_PROCESS_MODE_CONTINUOUS_RACK:

  539.                 forceStereo = True

  540.             elif processMode == ENGINE_PROCESS_MODE_MULTIPLE_CLIENTS and LADISH_APP_NAME:

  541.                 print("LADISH detected but using multiple clients (not allowed), forcing single client now")

  542.                 processMode = ENGINE_PROCESS_MODE_SINGLE_CLIENT

  543. 

  544.             if audioDriver != "JACK" and transportMode == ENGINE_TRANSPORT_MODE_JACK:

  545.                 transportMode = ENGINE_TRANSPORT_MODE_INTERNAL

  546. 

  547.         if gCarla.processModeForced or gCarla.isPlugin:

  548.             processMode = gCarla.processMode

  549. 

  550.         # -------------------------------------------------------------

  551.         # save this for later

  552. 

  553.         gCarla.maxParameters  = maxParameters

  554.         gCarla.useCustomSkins = useCustomSkins

  555. 

  556.         if gCarla.host is None:

  557.             return audioDriver

  558. 

  559.         # -------------------------------------------------------------

  560.         # apply settings

  561. 

  562.         gCarla.host.set_engine_option(ENGINE_OPTION_FORCE_STEREO,          forceStereo,         "")

  563.         gCarla.host.set_engine_option(ENGINE_OPTION_PREFER_PLUGIN_BRIDGES, preferPluginBridges, "")

  564.         gCarla.host.set_engine_option(ENGINE_OPTION_PREFER_UI_BRIDGES,     preferUiBridges,     "")

  565.         gCarla.host.set_engine_option(ENGINE_OPTION_UIS_ALWAYS_ON_TOP,     uisAlwaysOnTop,      "")

  566.         gCarla.host.set_engine_option(ENGINE_OPTION_MAX_PARAMETERS,        maxParameters,       "")

  567.         gCarla.host.set_engine_option(ENGINE_OPTION_UI_BRIDGES_TIMEOUT,    uiBridgesTimeout,    "")

  568. 

  569.         gCarla.host.set_engine_option(ENGINE_OPTION_PLUGIN_PATH, PLUGIN_LADSPA, splitter.join(LADSPA_PATH))

  570.         gCarla.host.set_engine_option(ENGINE_OPTION_PLUGIN_PATH, PLUGIN_DSSI,   splitter.join(DSSI_PATH))

  571.         gCarla.host.set_engine_option(ENGINE_OPTION_PLUGIN_PATH, PLUGIN_LV2,    splitter.join(LV2_PATH))

  572.         gCarla.host.set_engine_option(ENGINE_OPTION_PLUGIN_PATH, PLUGIN_VST,    splitter.join(VST_PATH))

  573.         gCarla.host.set_engine_option(ENGINE_OPTION_PLUGIN_PATH, PLUGIN_VST3,   splitter.join(VST3_PATH))

  574.         gCarla.host.set_engine_option(ENGINE_OPTION_PLUGIN_PATH, PLUGIN_AU,     splitter.join(AU_PATH))

  575.         gCarla.host.set_engine_option(ENGINE_OPTION_PLUGIN_PATH, PLUGIN_GIG,    splitter.join(GIG_PATH))

  576.         gCarla.host.set_engine_option(ENGINE_OPTION_PLUGIN_PATH, PLUGIN_SF2,    splitter.join(SF2_PATH))

  577.         gCarla.host.set_engine_option(ENGINE_OPTION_PLUGIN_PATH, PLUGIN_SFZ,    splitter.join(SFZ_PATH))

  578. 

  579.         if not gCarla.isPlugin:

  580.             gCarla.host.set_engine_option(ENGINE_OPTION_PROCESS_MODE,          processMode,         "")

  581.             gCarla.host.set_engine_option(ENGINE_OPTION_TRANSPORT_MODE,        transportMode,       "")

  582. 

  583.             gCarla.host.set_engine_option(ENGINE_OPTION_AUDIO_NUM_PERIODS,     audioNumPeriods,     "")

  584.             gCarla.host.set_engine_option(ENGINE_OPTION_AUDIO_BUFFER_SIZE,     audioBufferSize,     "")

  585.             gCarla.host.set_engine_option(ENGINE_OPTION_AUDIO_SAMPLE_RATE,     audioSampleRate,     "")

  586.             gCarla.host.set_engine_option(ENGINE_OPTION_AUDIO_DEVICE,          0,                   audioDevice)

  587. 

  588.         # -------------------------------------------------------------

  589.         # return selected driver name

  590. 

  591.         return audioDriver

  592. 

  593.     def startEngine(self):

  594.         audioDriver = self.setEngineSettings()

  595. 

  596.         if gCarla.host is not None and not gCarla.host.engine_init(audioDriver, self.fClientName):

  597.             if self.fFirstEngineInit:

  598.                 self.fFirstEngineInit = False

  599.                 return

  600. 

  601.             audioError = gCarla.host.get_last_error()

  602. 

  603.             if audioError:

  604.                 QMessageBox.critical(self, self.tr("Error"), self.tr("Could not connect to Audio backend '%s', possible reasons:\n%s" % (audioDriver, audioError)))

  605.             else:

  606.                 QMessageBox.critical(self, self.tr("Error"), self.tr("Could not connect to Audio backend '%s'" % audioDriver))

  607.             return

  608. 

  609.         self.fFirstEngineInit = False

  610. 

  611.     def stopEngine(self):

  612.         if self.fContainer.getPluginCount() > 0:

  613.             ask = QMessageBox.question(self, self.tr("Warning"), self.tr("There are still some plugins loaded, you need to remove them to stop the engine.\n"

  614.                                                                          "Do you want to do this now?"),

  615.                                                                          QMessageBox.Yes | QMessageBox.No, QMessageBox.No)

  616.             if ask != QMessageBox.Yes:

  617.                 return

  618. 

  619.             self.ui.act_plugin_remove_all.setEnabled(False)

  620.             self.fContainer.removeAllPlugins()

  621. 

  622.         if gCarla.host.is_engine_running() and not gCarla.host.engine_close():

  623.             print(gCarla.host.get_last_error())

  624. 

  625.     # -----------------------------------------------------------------

  626.     # Internal stuff (plugins)

  627. 

  628.     def getExtraPtr(self, plugin):

  629.         ptype = plugin['type']

  630. 

  631.         if ptype == PLUGIN_LADSPA:

  632.             uniqueId = plugin['uniqueId']

  633. 

  634.             self.maybeLoadRDFs()

  635. 

  636.             for rdfItem in self.fLadspaRdfList:

  637.                 if rdfItem.UniqueID == uniqueId:

  638.                     return pointer(rdfItem)

  639. 

  640.         elif ptype in (PLUGIN_GIG, PLUGIN_SF2):

  641.             if plugin['name'].lower().endswith(" (16 outputs)"):

  642.                 return c_char_p("true".encode("utf-8"))

  643. 

  644.         return None

  645. 

  646.     def maybeLoadRDFs(self):

  647.         if not self.fLadspaRdfNeedsUpdate:

  648.             return

  649. 

  650.         self.fLadspaRdfNeedsUpdate = False

  651.         self.fLadspaRdfList = []

  652. 

  653.         if not haveLRDF:

  654.             return

  655. 

  656.         settingsDir  = os.path.join(HOME, ".config", "falkTX")

  657.         frLadspaFile = os.path.join(settingsDir, "ladspa_rdf.db")

  658. 

  659.         if os.path.exists(frLadspaFile):

  660.             frLadspa = open(frLadspaFile, 'r')

  661. 

  662.             try:

  663.                 self.fLadspaRdfList = ladspa_rdf.get_c_ladspa_rdfs(json.load(frLadspa))

  664.             except:

  665.                 pass

  666. 

  667.             frLadspa.close()

  668. 

  669.     def setLoadRDFsNeeded(self):

  670.         self.fLadspaRdfNeedsUpdate = True

  671. 

  672.     # -----------------------------------------------------------------

  673.     # Internal stuff (transport)

  674. 

  675.     def refreshTransport(self, forced = False):

  676.         if gCarla.sampleRate == 0.0 or not gCarla.host.is_engine_running():

  677.             return

  678. 

  679.         timeInfo = gCarla.host.get_transport_info()

  680.         playing  = bool(timeInfo['playing'])

  681.         frame    = int(timeInfo['frame'])

  682. 

  683.         if playing != self.fLastTransportState or forced:

  684.             if playing:

  685.                 icon = getIcon("media-playback-pause")

  686.                 self.ui.act_transport_play.setChecked(True)

  687.                 self.ui.act_transport_play.setIcon(icon)

  688.                 self.ui.act_transport_play.setText(self.tr("&Pause"))

  689.             else:

  690.                 icon = getIcon("media-playback-start")

  691.                 self.ui.act_transport_play.setChecked(False)

  692.                 self.ui.act_transport_play.setIcon(icon)

  693.                 self.ui.act_transport_play.setText(self.tr("&Play"))

  694. 

  695.             self.fLastTransportState = playing

  696. 

  697.         if frame != self.fLastTransportFrame or forced:

  698.             time = frame / gCarla.sampleRate

  699.             secs = time % 60

  700.             mins = (time / 60) % 60

  701.             hrs  = (time / 3600) % 60

  702. 

  703.             self.fTextTransport = "Transport %s, at %02i:%02i:%02i" % ("playing" if playing else "stopped", hrs, mins, secs)

  704.             self.fLastTransportFrame = frame

  705. 

  706.     def setTransportMenuEnabled(self, enabled):

  707.         self.ui.act_transport_play.setEnabled(enabled)

  708.         self.ui.act_transport_stop.setEnabled(enabled)

  709.         self.ui.act_transport_backwards.setEnabled(enabled)

  710.         self.ui.act_transport_forwards.setEnabled(enabled)

  711.         self.ui.menu_Transport.setEnabled(enabled)

  712. 

  713.     # -----------------------------------------------------------------

  714.     # Internal stuff (settings)

  715. 

  716.     def loadSettings(self, firstTime):

  717.         settings = QSettings()

  718. 

  719.         if firstTime:

  720.             self.restoreGeometry(settings.value("Geometry", ""))

  721. 

  722.             showToolbar = settings.value("ShowToolbar", True, type=bool)

  723.             self.ui.act_settings_show_toolbar.setChecked(showToolbar)

  724.             self.ui.toolBar.setVisible(showToolbar)

  725. 

  726.             #if settings.contains("SplitterState"):

  727.                 #self.ui.splitter.restoreState(settings.value("SplitterState", ""))

  728.             #else:

  729.                 #self.ui.splitter.setSizes([210, 99999])

  730. 

  731.             diskFolders = toList(settings.value("DiskFolders", [HOME]))

  732. 

  733.             self.ui.cb_disk.setItemData(0, HOME)

  734. 

  735.             for i in range(len(diskFolders)):

  736.                 if i == 0: continue

  737.                 folder = diskFolders[i]

  738.                 self.ui.cb_disk.addItem(os.path.basename(folder), folder)

  739. 

  740.             #if MACOS and not settings.value(CARLA_KEY_MAIN_USE_PRO_THEME, True, type=bool):

  741.             #    self.setUnifiedTitleAndToolBarOnMac(True)

  742. 

  743.         # ---------------------------------------------

  744. 

  745.         if gCarla.host is not None and not gCarla.isPlugin:

  746.             # engine

  747.             self.setEngineSettings(settings)

  748. 

  749.         # ---------------------------------------------

  750. 

  751.         # TODO

  752. 

  753.         self.fSavedSettings = {

  754.             CARLA_KEY_MAIN_PROJECT_FOLDER:     settings.value(CARLA_KEY_MAIN_PROJECT_FOLDER,     CARLA_DEFAULT_MAIN_PROJECT_FOLDER,     type=str),

  755.             CARLA_KEY_MAIN_REFRESH_INTERVAL:   settings.value(CARLA_KEY_MAIN_REFRESH_INTERVAL,   CARLA_DEFAULT_MAIN_REFRESH_INTERVAL,   type=int),

  756.             CARLA_KEY_CANVAS_THEME:            settings.value(CARLA_KEY_CANVAS_THEME,            CARLA_DEFAULT_CANVAS_THEME,            type=str),

  757.             CARLA_KEY_CANVAS_SIZE:             settings.value(CARLA_KEY_CANVAS_SIZE,             CARLA_DEFAULT_CANVAS_SIZE,             type=str),

  758.             CARLA_KEY_CANVAS_AUTO_HIDE_GROUPS: settings.value(CARLA_KEY_CANVAS_AUTO_HIDE_GROUPS, CARLA_DEFAULT_CANVAS_AUTO_HIDE_GROUPS, type=bool),

  759.             CARLA_KEY_CANVAS_USE_BEZIER_LINES: settings.value(CARLA_KEY_CANVAS_USE_BEZIER_LINES, CARLA_DEFAULT_CANVAS_USE_BEZIER_LINES, type=bool),

  760.             CARLA_KEY_CANVAS_EYE_CANDY:        settings.value(CARLA_KEY_CANVAS_EYE_CANDY,        CARLA_DEFAULT_CANVAS_EYE_CANDY,        type=int),

  761.             CARLA_KEY_CANVAS_USE_OPENGL:       settings.value(CARLA_KEY_CANVAS_USE_OPENGL,       CARLA_DEFAULT_CANVAS_USE_OPENGL,       type=bool),

  762.             CARLA_KEY_CANVAS_ANTIALIASING:     settings.value(CARLA_KEY_CANVAS_ANTIALIASING,     CARLA_DEFAULT_CANVAS_ANTIALIASING,     type=int),

  763.             CARLA_KEY_CANVAS_HQ_ANTIALIASING:  settings.value(CARLA_KEY_CANVAS_HQ_ANTIALIASING,  CARLA_DEFAULT_CANVAS_HQ_ANTIALIASING,  type=bool),

  764.             CARLA_KEY_CUSTOM_PAINTING:        (settings.value(CARLA_KEY_MAIN_USE_PRO_THEME, True, type=bool) and

  765.                                                settings.value(CARLA_KEY_MAIN_PRO_THEME_COLOR, "Black", type=str).lower() == "black")

  766.         }

  767. 

  768.         # ---------------------------------------------

  769. 

  770.         if self.fIdleTimerFast != 0:

  771.             self.killTimer(self.fIdleTimerFast)

  772.             self.fIdleTimerFast = self.startTimer(self.fSavedSettings[CARLA_KEY_MAIN_REFRESH_INTERVAL])

  773. 

  774.         if self.fIdleTimerSlow != 0:

  775.             self.killTimer(self.fIdleTimerSlow)

  776.             self.fIdleTimerSlow = self.startTimer(self.fSavedSettings[CARLA_KEY_MAIN_REFRESH_INTERVAL]*4)

  777. 

  778.     def saveSettings(self):

  779.         settings = QSettings()

  780. 

  781.         settings.setValue("Geometry", self.saveGeometry())

  782.         #settings.setValue("SplitterState", self.ui.splitter.saveState())

  783.         settings.setValue("ShowToolbar", self.ui.toolBar.isVisible())

  784. 

  785.         diskFolders = []

  786. 

  787.         for i in range(self.ui.cb_disk.count()):

  788.             diskFolders.append(self.ui.cb_disk.itemData(i))

  789. 

  790.         settings.setValue("DiskFolders", diskFolders)

  791. 

  792.         self.fContainer.saveSettings(settings)

  793. 

  794.     # -----------------------------------------------------------------

  795.     # Internal stuff (gui)

  796. 

  797.     def killTimers(self):

  798.         if self.fIdleTimerFast != 0:

  799.             self.killTimer(self.fIdleTimerFast)

  800.             self.fIdleTimerFast = 0

  801. 

  802.         if self.fIdleTimerSlow != 0:

  803.             self.killTimer(self.fIdleTimerSlow)

  804.             self.fIdleTimerSlow = 0

  805. 

  806.     def setProperWindowTitle(self):

  807.         title = self.fClientName

  808. 

  809.         if self.fProjectFilename:

  810.             title += " - %s" % os.path.basename(self.fProjectFilename)

  811.         if self.fSessionManagerName:

  812.             title += " (%s)" % self.fSessionManagerName

  813. 

  814.         self.setWindowTitle(title)

  815. 

  816.     # -----------------------------------------------------------------

  817. 

  818.     @pyqtSlot()

  819.     def slot_fileNew(self):

  820.         self.fContainer.removeAllPlugins()

  821.         self.fProjectFilename = ""

  822.         self.setProperWindowTitle()

  823. 

  824.     @pyqtSlot()

  825.     def slot_fileOpen(self):

  826.         fileFilter = self.tr("Carla Project File (*.carxp)")

  827.         filename   = QFileDialog.getOpenFileName(self, self.tr("Open Carla Project File"), self.fSavedSettings[CARLA_KEY_MAIN_PROJECT_FOLDER], filter=fileFilter)

  828. 

  829.         if config_UseQt5:

  830.             filename = filename[0]

  831.         if not filename:

  832.             return

  833. 

  834.         newFile = True

  835. 

  836.         if self.fContainer.getPluginCount() > 0:

  837.             ask = QMessageBox.question(self, self.tr("Question"), self.tr("There are some plugins loaded, do you want to remove them now?"),

  838.                                                                           QMessageBox.Yes | QMessageBox.No, QMessageBox.No)

  839.             newFile = (ask == QMessageBox.Yes)

  840. 

  841.         if newFile:

  842.             self.fContainer.removeAllPlugins()

  843.             self.fProjectFilename = filename

  844.             self.setProperWindowTitle()

  845.             self.loadProjectNow()

  846.         else:

  847.             filenameOld = self.fProjectFilename

  848.             self.fProjectFilename = filename

  849.             self.loadProjectNow()

  850.             self.fProjectFilename = filenameOld

  851. 

  852.     @pyqtSlot()

  853.     def slot_fileSave(self, saveAs=False):

  854.         if self.fProjectFilename and not saveAs:

  855.             return self.saveProjectNow()

  856. 

  857.         fileFilter = self.tr("Carla Project File (*.carxp)")

  858.         filename   = QFileDialog.getSaveFileName(self, self.tr("Save Carla Project File"), self.fSavedSettings[CARLA_KEY_MAIN_PROJECT_FOLDER], filter=fileFilter)

  859. 

  860.         if config_UseQt5:

  861.             filename = filename[0]

  862.         if not filename:

  863.             return

  864. 

  865.         if not filename.lower().endswith(".carxp"):

  866.             filename += ".carxp"

  867. 

  868.         if self.fProjectFilename != filename:

  869.             self.fProjectFilename = filename

  870.             self.setProperWindowTitle()

  871. 

  872.         self.saveProjectNow()

  873. 

  874.     @pyqtSlot()

  875.     def slot_fileSaveAs(self):

  876.         self.slot_fileSave(True)

  877. 

  878.     # -----------------------------------------------------------------

  879. 

  880.     @pyqtSlot()

  881.     def slot_engineStart(self, doStart = True):

  882.         if doStart: self.startEngine()

  883. 

  884.         check = gCarla.host is not None and gCarla.host.is_engine_running()

  885.         self.ui.menu_PluginMacros.setEnabled(check)

  886.         self.ui.menu_Canvas.setEnabled(check)

  887. 

  888.         if not gCarla.isPlugin:

  889.             self.ui.act_engine_start.setEnabled(not check)

  890.             self.ui.act_engine_stop.setEnabled(check)

  891. 

  892.             if not self.fSessionManagerName:

  893.                 self.ui.act_file_open.setEnabled(check)

  894.                 self.ui.act_file_save.setEnabled(check)

  895.                 self.ui.act_file_save_as.setEnabled(check)

  896. 

  897.             self.setTransportMenuEnabled(check)

  898. 

  899.         if check:

  900.             if not gCarla.isPlugin:

  901.                 self.refreshTransport(True)

  902. 

  903.             self.fContainer.engineStarted()

  904. 

  905.     @pyqtSlot()

  906.     def slot_engineStop(self, doStop = True):

  907.         if doStop: self.stopEngine()

  908. 

  909.         # FIXME?

  910.         if self.fContainer.getPluginCount() > 0:

  911.             self.ui.act_plugin_remove_all.setEnabled(False)

  912.             self.fContainer.removeAllPlugins()

  913. 

  914.         check = gCarla.host.is_engine_running()

  915.         self.ui.menu_PluginMacros.setEnabled(check)

  916.         self.ui.menu_Canvas.setEnabled(check)

  917. 

  918.         if not gCarla.isPlugin:

  919.             self.ui.act_engine_start.setEnabled(not check)

  920.             self.ui.act_engine_stop.setEnabled(check)

  921. 

  922.             if not self.fSessionManagerName:

  923.                 self.ui.act_file_open.setEnabled(check)

  924.                 self.ui.act_file_save.setEnabled(check)

  925.                 self.ui.act_file_save_as.setEnabled(check)

  926. 

  927.             self.setTransportMenuEnabled(check)

  928. 

  929.         if not check:

  930.             self.fTextTransport = ""

  931.             self.fContainer.engineStopped()

  932. 

  933.     # -----------------------------------------------------------------

  934. 

  935.     @pyqtSlot()

  936.     def slot_pluginAdd(self, pluginToReplace = -1):

  937.         dialog = PluginDatabaseW(self)

  938. 

  939.         if not dialog.exec_():

  940.             return

  941. 

  942.         if gCarla.host is None:

  943.             return

  944.         if not gCarla.host.is_engine_running():

  945.             QMessageBox.warning(self, self.tr("Warning"), self.tr("Cannot add new plugins while engine is stopped"))

  946.             return

  947. 

  948.         btype    = dialog.fRetPlugin['build']

  949.         ptype    = dialog.fRetPlugin['type']

  950.         filename = dialog.fRetPlugin['filename']

  951.         label    = dialog.fRetPlugin['label']

  952.         uniqueId = dialog.fRetPlugin['uniqueId']

  953.         extraPtr = self.getExtraPtr(dialog.fRetPlugin)

  954. 

  955.         if pluginToReplace >= 0:

  956.             if not gCarla.host.replace_plugin(pluginToReplace):

  957.                 CustomMessageBox(self, QMessageBox.Critical, self.tr("Error"), self.tr("Failed to replace plugin"), gCarla.host.get_last_error(), QMessageBox.Ok, QMessageBox.Ok)

  958.                 return

  959. 

  960.         ok = gCarla.host.add_plugin(btype, ptype, filename, None, label, uniqueId, extraPtr)

  961. 

  962.         if pluginToReplace >= 0:

  963.             gCarla.host.replace_plugin(self.fContainer.getPluginCount())

  964. 

  965.         if not ok:

  966.             CustomMessageBox(self, QMessageBox.Critical, self.tr("Error"), self.tr("Failed to load plugin"), gCarla.host.get_last_error(), QMessageBox.Ok, QMessageBox.Ok)

  967. 

  968.     @pyqtSlot()

  969.     def slot_pluginRemoveAll(self):

  970.         self.ui.act_plugin_remove_all.setEnabled(False)

  971. 

  972.         count = self.fContainer.getPluginCount()

  973. 

  974.         if count == 0:

  975.             return

  976. 

  977.         self.fContainer.projectLoadingStarted()

  978. 

  979.         app = QApplication.instance()

  980.         for i in range(count):

  981.             app.processEvents()

  982.             gCarla.host.remove_plugin(count-i-1)

  983. 

  984.         self.fContainer.projectLoadingFinished()

  985. 

  986.         #self.fContainer.removeAllPlugins()

  987.         #gCarla.host.remove_all_plugins()

  988. 

  989.     # -----------------------------------------------------------------

  990. 

  991.     @pyqtSlot(bool)

  992.     def slot_transportPlayPause(self, toggled):

  993.         if not gCarla.host.is_engine_running():

  994.             return

  995. 

  996.         if toggled:

  997.             gCarla.host.transport_play()

  998.         else:

  999.             gCarla.host.transport_pause()

  1000. 

  1001.         self.refreshTransport()

  1002. 

  1003.     @pyqtSlot()

  1004.     def slot_transportStop(self):

  1005.         if not gCarla.host.is_engine_running():

  1006.             return

  1007. 

  1008.         gCarla.host.transport_pause()

  1009.         gCarla.host.transport_relocate(0)

  1010. 

  1011.         self.refreshTransport()

  1012. 

  1013.     @pyqtSlot()

  1014.     def slot_transportBackwards(self):

  1015.         if not gCarla.host.is_engine_running():

  1016.             return

  1017. 

  1018.         newFrame = gCarla.host.get_current_transport_frame() - 100000

  1019. 

  1020.         if newFrame < 0:

  1021.             newFrame = 0

  1022. 

  1023.         gCarla.host.transport_relocate(newFrame)

  1024. 

  1025.     @pyqtSlot()

  1026.     def slot_transportForwards(self):

  1027.         if not gCarla.host.is_engine_running():

  1028.             return

  1029. 

  1030.         newFrame = gCarla.host.get_current_transport_frame() + 100000

  1031.         gCarla.host.transport_relocate(newFrame)

  1032. 

  1033.     # -----------------------------------------------------------------

  1034. 

  1035.     @pyqtSlot()

  1036.     def slot_aboutCarla(self):

  1037.         CarlaAboutW(self, gCarla.host).exec_()

  1038. 

  1039.     @pyqtSlot()

  1040.     def slot_aboutJuce(self):

  1041.         JuceAboutW(self, gCarla.host).exec_()

  1042. 

  1043.     @pyqtSlot()

  1044.     def slot_aboutQt(self):

  1045.         QApplication.instance().aboutQt()

  1046. 

  1047.     # -----------------------------------------------------------------

  1048. 

  1049.     @pyqtSlot(int)

  1050.     def slot_diskFolderChanged(self, index):

  1051.         if index < 0:

  1052.             return

  1053.         elif index == 0:

  1054.             filename = HOME

  1055.             self.ui.b_disk_remove.setEnabled(False)

  1056.         else:

  1057.             filename = self.ui.cb_disk.itemData(index)

  1058.             self.ui.b_disk_remove.setEnabled(True)

  1059. 

  1060.         self.fDirModel.setRootPath(filename)

  1061.         self.ui.fileTreeView.setRootIndex(self.fDirModel.index(filename))

  1062. 

  1063.     @pyqtSlot()

  1064.     def slot_diskFolderAdd(self):

  1065.         newPath = QFileDialog.getExistingDirectory(self, self.tr("New Folder"), "", QFileDialog.ShowDirsOnly)

  1066. 

  1067.         if newPath:

  1068.             if newPath[-1] == os.sep:

  1069.                 newPath = newPath[:-1]

  1070.             self.ui.cb_disk.addItem(os.path.basename(newPath), newPath)

  1071.             self.ui.cb_disk.setCurrentIndex(self.ui.cb_disk.count()-1)

  1072.             self.ui.b_disk_remove.setEnabled(True)

  1073. 

  1074.     @pyqtSlot()

  1075.     def slot_diskFolderRemove(self):

  1076.         index = self.ui.cb_disk.currentIndex()

  1077. 

  1078.         if index <= 0:

  1079.             return

  1080. 

  1081.         self.ui.cb_disk.removeItem(index)

  1082. 

  1083.         if self.ui.cb_disk.currentIndex() == 0:

  1084.             self.ui.b_disk_remove.setEnabled(False)

  1085. 

  1086.     @pyqtSlot(QModelIndex)

  1087.     def slot_fileTreeDoubleClicked(self, modelIndex):

  1088.         filename = self.fDirModel.filePath(modelIndex)

  1089. 

  1090.         if not gCarla.host.load_file(filename):

  1091.             CustomMessageBox(self, QMessageBox.Critical, self.tr("Error"),

  1092.                              self.tr("Failed to load file"),

  1093.                              gCarla.host.get_last_error(), QMessageBox.Ok, QMessageBox.Ok)

  1094. 

  1095.     # -----------------------------------------------------------------

  1096. 

  1097.     @pyqtSlot(int, int, int, float, str)

  1098.     def slot_handleDebugCallback(self, pluginId, value1, value2, value3, valueStr):

  1099.         print("DEBUG:", pluginId, value1, value2, value3, valueStr)

  1100.         #self.ui.pte_log.appendPlainText(valueStr.replace("", "DEBUG: ").replace("", "ERROR: ").replace("", "").replace("\n", ""))

  1101. 

  1102.     # -----------------------------------------------------------------

  1103. 

  1104.     @pyqtSlot(int, str)

  1105.     def slot_handlePluginAddedCallback(self, pluginId, pluginName):

  1106.         self.fContainer.addPlugin(pluginId, self.fIsProjectLoading)

  1107. 

  1108.         if self.fContainer.getPluginCount() == 1:

  1109.             self.ui.act_plugin_remove_all.setEnabled(True)

  1110. 

  1111.     @pyqtSlot(int)

  1112.     def slot_handlePluginRemovedCallback(self, pluginId):

  1113.         self.fContainer.removePlugin(pluginId)

  1114. 

  1115.         if self.fContainer.getPluginCount() == 0:

  1116.             self.ui.act_plugin_remove_all.setEnabled(False)

  1117. 

  1118.     @pyqtSlot(int, str)

  1119.     def slot_handlePluginRenamedCallback(self, pluginId, newName):

  1120.         self.fContainer.renamePlugin(pluginId, newName)

  1121. 

  1122.     @pyqtSlot(int, str)

  1123.     def slot_handlePluginUnavailableCallback(self, pluginId, errorMsg):

  1124.         self.fContainer.disablePlugin(pluginId, errorMsg)

  1125. 

  1126.     # -----------------------------------------------------------------

  1127. 

  1128.     @pyqtSlot(str)

  1129.     def slot_handleEngineStartedCallback(self, processMode, transportMode, driverName):

  1130.         gCarla.processMode   = processMode

  1131.         gCarla.transportMode = transportMode

  1132.         gCarla.bufferSize    = gCarla.host.get_buffer_size()

  1133.         gCarla.sampleRate    = gCarla.host.get_sample_rate()

  1134. 

  1135.         self.slot_engineStart(False)

  1136. 

  1137.         if self.fIdleTimerFast == 0:

  1138.             self.fIdleTimerFast = self.startTimer(self.fSavedSettings[CARLA_KEY_MAIN_REFRESH_INTERVAL])

  1139.         if self.fIdleTimerSlow == 0:

  1140.             self.fIdleTimerSlow = self.startTimer(self.fSavedSettings[CARLA_KEY_MAIN_REFRESH_INTERVAL]*4)

  1141. 

  1142.     @pyqtSlot()

  1143.     def slot_handleEngineStoppedCallback(self):

  1144.         self.killTimers()

  1145.         self.slot_engineStop(False)

  1146. 

  1147.         gCarla.bufferSize = 0

  1148.         gCarla.sampleRate = 0.0

  1149. 

  1150.     # -----------------------------------------------------------------

  1151. 

  1152.     @pyqtSlot(int)

  1153.     def slot_handleProcessModeChangedCallback(self, newProcessMode):

  1154.         self.fEngineChanged = True

  1155. 

  1156.     @pyqtSlot(int)

  1157.     def slot_handleTransportModeChangedCallback(self, newTransportMode):

  1158.         self.fEngineChanged = True

  1159. 

  1160.     # -----------------------------------------------------------------

  1161. 

  1162.     @pyqtSlot(int)

  1163.     def slot_handleBufferSizeChangedCallback(self, newBufferSize):

  1164.         self.fEngineChanged = True

  1165. 

  1166.     @pyqtSlot(float)

  1167.     def slot_handleSampleRateChangedCallback(self, newSampleRate):

  1168.         self.fEngineChanged = True

  1169. 

  1170.     # -----------------------------------------------------------------

  1171. 

  1172.     @pyqtSlot(str)

  1173.     def slot_handleInfoCallback(self, info):

  1174.         QMessageBox.information(self, "Information", info)

  1175. 

  1176.     @pyqtSlot(str)

  1177.     def slot_handleErrorCallback(self, error):

  1178.         QMessageBox.critical(self, "Error", error)

  1179. 

  1180.     @pyqtSlot()

  1181.     def slot_handleQuitCallback(self):

  1182.         pass

  1183. 

  1184.     # -----------------------------------------------------------------

  1185. 

  1186.     @pyqtSlot()

  1187.     def slot_handleSIGUSR1(self):

  1188.         print("Got SIGUSR1 -> Saving project now")

  1189.         self.slot_fileSave()

  1190. 

  1191.     @pyqtSlot()

  1192.     def slot_handleSIGTERM(self):

  1193.         print("Got SIGTERM -> Closing now")

  1194.         self.close()

  1195. 

  1196.     # -----------------------------------------------------------------

  1197. 

  1198.     def showEvent(self, event):

  1199.         QMainWindow.showEvent(self, event)

  1200. 

  1201.         # set our gui as parent for all plugins UIs

  1202.         if gCarla.host is not None:

  1203.             winIdStr = "%x" % self.winId()

  1204.             gCarla.host.set_engine_option(ENGINE_OPTION_FRONTEND_WIN_ID, 0, winIdStr)

  1205. 

  1206.     def timerEvent(self, event):

  1207.         if event.timerId() == self.fIdleTimerFast:

  1208.             #if not gCarla.isPlugin:

  1209.             gCarla.host.engine_idle()

  1210.             self.refreshTransport()

  1211. 

  1212.             self.fContainer.idleFast()

  1213. 

  1214.         elif event.timerId() == self.fIdleTimerSlow:

  1215.             if self.fEngineChanged:

  1216.                 self.fContainer.engineChanged()

  1217.                 self.fEngineChanged = False

  1218. 

  1219.             self.fContainer.idleSlow()

  1220. 

  1221.         QMainWindow.timerEvent(self, event)

  1222. 

  1223.     def closeEvent(self, event):

  1224.         self.killTimers()

  1225.         self.saveSettings()

  1226. 

  1227.         if gCarla.host is None or gCarla.isPlugin:

  1228.             pass

  1229. 

  1230.         elif gCarla.host.is_engine_running():

  1231.             gCarla.host.set_engine_about_to_close()

  1232. 

  1233.             count = self.fContainer.getPluginCount()

  1234. 

  1235.             if count > 0:

  1236.                 # simulate project loading, to disable container

  1237.                 self.ui.act_plugin_remove_all.setEnabled(False)

  1238.                 self.fContainer.projectLoadingStarted()

  1239. 

  1240.                 app = QApplication.instance()

  1241.                 for i in range(count):

  1242.                     app.processEvents()

  1243.                     gCarla.host.remove_plugin(count-i-1)

  1244. 

  1245.                 app.processEvents()

  1246. 

  1247.                 #self.fContainer.removeAllPlugins()

  1248.                 #gCarla.host.remove_all_plugins()

  1249. 

  1250.             self.stopEngine()

  1251. 

  1252.         QMainWindow.closeEvent(self, event)

  1253. 

  1254. # ------------------------------------------------------------------------------------------------------------

  1255. # Engine callback

  1256. 

  1257. def engineCallback(ptr, action, pluginId, value1, value2, value3, valueStr):

  1258.     if action == ENGINE_CALLBACK_PROCESS_MODE_CHANGED:

  1259.         gCarla.processMode = value1

  1260.         if gCarla.gui is not None:

  1261.             gCarla.gui.ProcessModeChangedCallback.emit(value1)

  1262.         return

  1263. 

  1264.     if action == ENGINE_CALLBACK_TRANSPORT_MODE_CHANGED:

  1265.         gCarla.transportMode = value1

  1266.         if gCarla.gui is not None:

  1267.             gCarla.gui.TransportModeChangedCallback.emit(value1)

  1268.         return

  1269. 

  1270.     if action == ENGINE_CALLBACK_BUFFER_SIZE_CHANGED:

  1271.         gCarla.bufferSize = value1

  1272.         if gCarla.gui is not None:

  1273.             gCarla.gui.BufferSizeChangedCallback.emit(value1)

  1274.         return

  1275. 

  1276.     if action == ENGINE_CALLBACK_SAMPLE_RATE_CHANGED:

  1277.         gCarla.sampleRate = value1

  1278.         if gCarla.gui is not None:

  1279.             gCarla.gui.SampleRateChangedCallback.emit(value3)

  1280.         return

  1281. 

  1282.     if gCarla.gui is None:

  1283.         print("WARNING: Got engine callback but UI is not ready : ", pluginId, value1, value2, value3, valueStr)

  1284.         return

  1285. 

  1286.     valueStr = charPtrToString(valueStr)

  1287. 

  1288.     if action == ENGINE_CALLBACK_DEBUG:

  1289.         gCarla.gui.DebugCallback.emit(pluginId, value1, value2, value3, valueStr)

  1290.     elif action == ENGINE_CALLBACK_PLUGIN_ADDED:

  1291.         gCarla.gui.PluginAddedCallback.emit(pluginId, valueStr)

  1292.     elif action == ENGINE_CALLBACK_PLUGIN_REMOVED:

  1293.         gCarla.gui.PluginRemovedCallback.emit(pluginId)

  1294.     elif action == ENGINE_CALLBACK_PLUGIN_RENAMED:

  1295.         gCarla.gui.PluginRenamedCallback.emit(pluginId, valueStr)

  1296.     elif action == ENGINE_CALLBACK_PLUGIN_UNAVAILABLE:

  1297.         gCarla.gui.PluginUnavailableCallback.emit(pluginId, valueStr)

  1298.     elif action == ENGINE_CALLBACK_PARAMETER_VALUE_CHANGED:

  1299.         gCarla.gui.ParameterValueChangedCallback.emit(pluginId, value1, value3)

  1300.     elif action == ENGINE_CALLBACK_PARAMETER_DEFAULT_CHANGED:

  1301.         gCarla.gui.ParameterDefaultChangedCallback.emit(pluginId, value1, value3)

  1302.     elif action == ENGINE_CALLBACK_PARAMETER_MIDI_CC_CHANGED:

  1303.         gCarla.gui.ParameterMidiCcChangedCallback.emit(pluginId, value1, value2)

  1304.     elif action == ENGINE_CALLBACK_PARAMETER_MIDI_CHANNEL_CHANGED:

  1305.         gCarla.gui.ParameterMidiChannelChangedCallback.emit(pluginId, value1, value2)

  1306.     elif action == ENGINE_CALLBACK_PROGRAM_CHANGED:

  1307.         gCarla.gui.ProgramChangedCallback.emit(pluginId, value1)

  1308.     elif action == ENGINE_CALLBACK_MIDI_PROGRAM_CHANGED:

  1309.         gCarla.gui.MidiProgramChangedCallback.emit(pluginId, value1)

  1310.     elif action == ENGINE_CALLBACK_OPTION_CHANGED:

  1311.         gCarla.gui.OptionChangedCallback.emit(pluginId, value1, bool(value2))

  1312.     elif action == ENGINE_CALLBACK_UI_STATE_CHANGED:

  1313.         gCarla.gui.UiStateChangedCallback.emit(pluginId, value1)

  1314.     elif action == ENGINE_CALLBACK_NOTE_ON:

  1315.         gCarla.gui.NoteOnCallback.emit(pluginId, value1, value2, int(value3))

  1316.     elif action == ENGINE_CALLBACK_NOTE_OFF:

  1317.         gCarla.gui.NoteOffCallback.emit(pluginId, value1, value2)

  1318.     elif action == ENGINE_CALLBACK_UPDATE:

  1319.         gCarla.gui.UpdateCallback.emit(pluginId)

  1320.     elif action == ENGINE_CALLBACK_RELOAD_INFO:

  1321.         gCarla.gui.ReloadInfoCallback.emit(pluginId)

  1322.     elif action == ENGINE_CALLBACK_RELOAD_PARAMETERS:

  1323.         gCarla.gui.ReloadParametersCallback.emit(pluginId)

  1324.     elif action == ENGINE_CALLBACK_RELOAD_PROGRAMS:

  1325.         gCarla.gui.ReloadProgramsCallback.emit(pluginId)

  1326.     elif action == ENGINE_CALLBACK_RELOAD_ALL:

  1327.         gCarla.gui.ReloadAllCallback.emit(pluginId)

  1328.     elif action == ENGINE_CALLBACK_PATCHBAY_CLIENT_ADDED:

  1329.         gCarla.gui.PatchbayClientAddedCallback.emit(pluginId, value1, value2, valueStr)

  1330.     elif action == ENGINE_CALLBACK_PATCHBAY_CLIENT_REMOVED:

  1331.         gCarla.gui.PatchbayClientRemovedCallback.emit(pluginId)

  1332.     elif action == ENGINE_CALLBACK_PATCHBAY_CLIENT_RENAMED:

  1333.         gCarla.gui.PatchbayClientRenamedCallback.emit(pluginId, valueStr)

  1334.     elif action == ENGINE_CALLBACK_PATCHBAY_CLIENT_DATA_CHANGED:

  1335.         gCarla.gui.PatchbayClientDataChangedCallback.emit(pluginId, value1, value2)

  1336.     elif action == ENGINE_CALLBACK_PATCHBAY_PORT_ADDED:

  1337.         gCarla.gui.PatchbayPortAddedCallback.emit(pluginId, value1, value2, valueStr)

  1338.     elif action == ENGINE_CALLBACK_PATCHBAY_PORT_REMOVED:

  1339.         gCarla.gui.PatchbayPortRemovedCallback.emit(pluginId, value1)

  1340.     elif action == ENGINE_CALLBACK_PATCHBAY_PORT_RENAMED:

  1341.         gCarla.gui.PatchbayPortRenamedCallback.emit(pluginId, value1, valueStr)

  1342.     elif action == ENGINE_CALLBACK_PATCHBAY_CONNECTION_ADDED:

  1343.         gOut, pOut, gIn, pIn = [int(i) for i in valueStr.split(":")]

  1344.         gCarla.gui.PatchbayConnectionAddedCallback.emit(pluginId, gOut, pOut, gIn, pIn)

  1345.     elif action == ENGINE_CALLBACK_PATCHBAY_CONNECTION_REMOVED:

  1346.         gCarla.gui.PatchbayConnectionRemovedCallback.emit(pluginId, value1, value2)

  1347.     elif action == ENGINE_CALLBACK_ENGINE_STARTED:

  1348.         gCarla.gui.EngineStartedCallback.emit(value1, value2, valueStr)

  1349.     elif action == ENGINE_CALLBACK_ENGINE_STOPPED:

  1350.         gCarla.gui.killTimers()

  1351.         gCarla.gui.EngineStoppedCallback.emit()

  1352.     elif action == ENGINE_CALLBACK_IDLE:

  1353.         QApplication.instance().processEvents()

  1354.     elif action == ENGINE_CALLBACK_INFO:

  1355.         gCarla.gui.InfoCallback.emit(valueStr)

  1356.     elif action == ENGINE_CALLBACK_ERROR:

  1357.         gCarla.gui.ErrorCallback.emit(valueStr)

  1358.     elif action == ENGINE_CALLBACK_QUIT:

  1359.         gCarla.gui.QuitCallback.emit()

  1360. 

  1361. # ------------------------------------------------------------------------------------------------------------

  1362. # File callback

  1363. 

  1364. def fileCallback(ptr, action, isDir, title, filter):

  1365.     if gCarla.gui is None:

  1366.         return None

  1367. 

  1368.     ret = ""

  1369. 

  1370.     if action == FILE_CALLBACK_DEBUG:

  1371.         pass

  1372.     elif action == FILE_CALLBACK_OPEN:

  1373.         ret = QFileDialog.getOpenFileName(gCarla.gui, charPtrToString(title), "", charPtrToString(filter) ) #, QFileDialog.ShowDirsOnly if isDir else 0x0)

  1374.     elif action == FILE_CALLBACK_SAVE:

  1375.         ret = QFileDialog.getSaveFileName(gCarla.gui, charPtrToString(title), "", charPtrToString(filter), QFileDialog.ShowDirsOnly if isDir else 0x0)

  1376. 

  1377.     if config_UseQt5:

  1378.         ret = ret[0]

  1379.     if not ret:

  1380.         return None

  1381. 

  1382.     gCarla.gui._fileRet = c_char_p(ret.encode("utf-8"))

  1383.     retval = cast(byref(gCarla.gui._fileRet), POINTER(c_uintptr))

  1384.     return retval.contents.value

  1385. 

  1386. # ------------------------------------------------------------------------------------------------------------

  1387. # Init host

  1388. 

  1389. def initHost(initName, libPrefix = None, failError = True):

  1390.     # --------------------------------------------------------------------------------------------------------

  1391.     # Set Carla library name

  1392. 

  1393.     libname = "libcarla_"

  1394. 

  1395.     if gCarla.isControl:

  1396.         libname += "control2"

  1397.     else:

  1398.         libname += "standalone2"

  1399. 

  1400.     if WINDOWS:

  1401.         libname += ".dll"

  1402.     elif MACOS:

  1403.         libname += ".dylib"

  1404.     else:

  1405.         libname += ".so"

  1406. 

  1407.     # --------------------------------------------------------------------------------------------------------

  1408.     # Set binary dir

  1409. 

  1410.     CWDl = CWD.lower()

  1411. 

  1412.     # standalone, installed system-wide linux

  1413.     if libPrefix is not None:

  1414.         gCarla.pathBinaries  = os.path.join(libPrefix, "lib", "carla")

  1415.         gCarla.pathResources = os.path.join(libPrefix, "share", "carla", "resources")

  1416. 

  1417.     # standalone, local source

  1418.     elif CWDl.endswith("source"):

  1419.         gCarla.pathBinaries  = os.path.abspath(os.path.join(CWD, "..", "bin"))

  1420.         gCarla.pathResources = os.path.join(gCarla.pathBinaries, "resources")

  1421. 

  1422.     # plugin

  1423.     elif CWDl.endswith("resources"):

  1424.         # installed system-wide linux

  1425.         if CWDl.endswith("/share/carla/resources"):

  1426.             gCarla.pathBinaries  = os.path.abspath(os.path.join(CWD, "..", "..", "..", "lib", "carla"))

  1427.             gCarla.pathResources = CWD

  1428. 

  1429.         # local source

  1430.         elif CWDl.endswith("native-plugins%sresources" % os.sep):

  1431.             gCarla.pathBinaries  = os.path.abspath(os.path.join(CWD, "..", "..", "..", "..", "bin"))

  1432.             gCarla.pathResources = CWD

  1433. 

  1434.         # other

  1435.         else:

  1436.             gCarla.pathBinaries  = os.path.abspath(os.path.join(CWD, ".."))

  1437.             gCarla.pathResources = CWD

  1438. 

  1439.     # everything else

  1440.     else:

  1441.         gCarla.pathBinaries  = CWD

  1442.         gCarla.pathResources = os.path.join(gCarla.pathBinaries, "resources")

  1443. 

  1444.     # --------------------------------------------------------------------------------------------------------

  1445.     # Fail if binary dir is not found

  1446. 

  1447.     if not os.path.exists(gCarla.pathBinaries):

  1448.         if failError:

  1449.             QMessageBox.critical(None, "Error", "Failed to find the carla binaries, cannot continue")

  1450.             sys.exit(1)

  1451.         return

  1452. 

  1453.     # --------------------------------------------------------------------------------------------------------

  1454.     # Print info

  1455. 

  1456.     print("Carla %s started, status:" % VERSION)

  1457.     print("  Python version: %s" % sys.version.split(" ",1)[0])

  1458.     print("  Qt version:     %s" % qVersion())

  1459.     print("  PyQt version:   %s" % PYQT_VERSION_STR)

  1460.     print("  Binary dir:     %s" % gCarla.pathBinaries)

  1461.     print("  Resources dir:  %s" % gCarla.pathResources)

  1462. 

  1463.     # --------------------------------------------------------------------------------------------------------

  1464.     # Init host

  1465. 

  1466.     if gCarla.host is None:

  1467.         #try:

  1468.             gCarla.host = CarlaHostDLL(os.path.join(gCarla.pathBinaries, libname))

  1469.         #except:

  1470.             #print("hmmmm...")

  1471.             #return

  1472. 

  1473.     gCarla.host.set_engine_callback(engineCallback)

  1474.     gCarla.host.set_file_callback(fileCallback)

  1475. 

  1476.     # If it's a plugin the paths are already set

  1477.     if not gCarla.isPlugin:

  1478.         gCarla.host.set_engine_option(ENGINE_OPTION_PATH_BINARIES,  0, gCarla.pathBinaries)

  1479.         gCarla.host.set_engine_option(ENGINE_OPTION_PATH_RESOURCES, 0, gCarla.pathResources)

  1480. 

  1481.         if not gCarla.isControl:

  1482.             gCarla.host.set_engine_option(ENGINE_OPTION_NSM_INIT, os.getpid(), initName)

  1483. 

  1484.     return gCarla.host

  1485. 

  1486. # ------------------------------------------------------------------------------------------------------------