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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) 2011-2013 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 (Global)

  21. 

  22. from PyQt4.QtCore import qCritical, QModelIndex, QTimer

  23. from PyQt4.QtGui import QApplication, QFileSystemModel, QMainWindow, QPalette

  24. 

  25. # ------------------------------------------------------------------------------------------------------------

  26. # Imports (Custom)

  27. 

  28. import ui_carla_host

  29. 

  30. from carla_database import *

  31. from carla_settings import *

  32. from carla_style import *

  33. from carla_widgets import *

  34. 

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

  36. # PatchCanvas defines

  37. 

  38. CANVAS_ANTIALIASING_SMALL = 1

  39. CANVAS_EYECANDY_SMALL     = 1

  40. 

  41. # ------------------------------------------------------------------------------------------------------------

  42. # Session Management support

  43. 

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

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

  46. 

  47. # ------------------------------------------------------------------------------------------------------------

  48. # Dummy widget

  49. 

  50. class CarlaDummyW(object):

  51.     def __init__(self, parent):

  52.         object.__init__(self)

  53. 

  54.     # -----------------------------------------------------------------

  55. 

  56.     def getPluginCount(self):

  57.         return 0

  58. 

  59.     # -----------------------------------------------------------------

  60. 

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

  62.         pass

  63. 

  64.     def removePlugin(self, pluginId):

  65.         pass

  66. 

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

  68.         pass

  69. 

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

  71.         pass

  72. 

  73.     def removeAllPlugins(self):

  74.         pass

  75. 

  76.     # -----------------------------------------------------------------

  77. 

  78.     def engineStarted(self):

  79.         pass

  80. 

  81.     def engineStopped(self):

  82.         pass

  83. 

  84.     def engineChanged(self):

  85.         pass

  86. 

  87.     # -----------------------------------------------------------------

  88. 

  89.     def idleFast(self):

  90.         pass

  91. 

  92.     def idleSlow(self):

  93.         pass

  94. 

  95.     # -----------------------------------------------------------------

  96. 

  97.     def saveSettings(self, settings):

  98.         pass

  99. 

  100. # ------------------------------------------------------------------------------------------------------------

  101. # Host Window

  102. 

  103. class HostWindow(QMainWindow):

  104.     # signals

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

  106.     PluginAddedCallback = pyqtSignal(int, str)

  107.     PluginRemovedCallback = pyqtSignal(int)

  108.     PluginRenamedCallback = pyqtSignal(int, str)

  109.     PluginUnavailableCallback = pyqtSignal(int, str)

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

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

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

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

  114.     ProgramChangedCallback = pyqtSignal(int, int)

  115.     MidiProgramChangedCallback = pyqtSignal(int, int)

  116.     UiStateChangedCallback = pyqtSignal(int, int)

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

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

  119.     UpdateCallback = pyqtSignal(int)

  120.     ReloadInfoCallback = pyqtSignal(int)

  121.     ReloadParametersCallback = pyqtSignal(int)

  122.     ReloadProgramsCallback = pyqtSignal(int)

  123.     ReloadAllCallback = pyqtSignal(int)

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

  125.     PatchbayClientRemovedCallback = pyqtSignal(int)

  126.     PatchbayClientRenamedCallback = pyqtSignal(int, str)

  127.     PatchbayClientIconChangedCallback = pyqtSignal(int, int)

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

  129.     PatchbayPortRemovedCallback = pyqtSignal(int, int)

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

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

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

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

  134.     EngineStoppedCallback = pyqtSignal()

  135.     ProcessModeChangedCallback = pyqtSignal(int)

  136.     TransportModeChangedCallback = pyqtSignal(int)

  137.     BufferSizeChangedCallback = pyqtSignal(int)

  138.     SampleRateChangedCallback = pyqtSignal(float)

  139.     InfoCallback = pyqtSignal(str)

  140.     ErrorCallback = pyqtSignal(str)

  141.     QuitCallback = pyqtSignal()

  142.     SIGTERM = pyqtSignal()

  143.     SIGUSR1 = pyqtSignal()

  144. 

  145.     def __init__(self, parent):

  146.         QMainWindow.__init__(self, parent)

  147.         self.ui = ui_carla_host.Ui_CarlaHostW()

  148.         self.ui.setupUi(self)

  149. 

  150.         if False:

  151.             Carla.gui = self

  152.             self.fContainer = CarlaDummyW(self)

  153. 

  154.         # -------------------------------------------------------------

  155.         # Set callback, TODO put somewhere else

  156. 

  157.         Carla.host.set_engine_callback(engineCallback)

  158. 

  159.         # -------------------------------------------------------------

  160.         # Internal stuff

  161. 

  162.         self.fIdleTimerFast = 0

  163.         self.fIdleTimerSlow = 0

  164. 

  165.         self.fIsProjectLoading = False

  166.         self.fProjectFilename  = ""

  167. 

  168.         self.fLadspaRdfNeedsUpdate = True

  169.         self.fLadspaRdfList = []

  170. 

  171.         self.fLastTransportFrame = 0

  172.         self.fLastTransportState = False

  173.         self.fTransportText = ""

  174. 

  175.         # when true, call engineChanged() asap

  176.         self.fEngineChanged = False

  177. 

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

  179.         self.fFirstEngineInit = True

  180. 

  181.         self.fSavedSettings = {}

  182. 

  183.         if LADISH_APP_NAME:

  184.             self.fClientName         = LADISH_APP_NAME

  185.             self.fSessionManagerName = "LADISH"

  186.         elif NSM_URL:

  187.             self.fClientName         = "Carla.tmp"

  188.             self.fSessionManagerName = "Non Session Manager"

  189.         else:

  190.             self.fClientName         = "Carla"

  191.             self.fSessionManagerName = ""

  192. 

  193.         # -------------------------------------------------------------

  194.         # Load Settings

  195. 

  196.         self.loadSettings(True)

  197. 

  198.         # -------------------------------------------------------------

  199.         # Set up GUI (engine stopped)

  200. 

  201.         if Carla.isPlugin:

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

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

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

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

  206.         else:

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

  208. 

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

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

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

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

  213. 

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

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

  216. 

  217.         self.setTransportMenuEnabled(False)

  218. 

  219.         # -------------------------------------------------------------

  220.         # Set up GUI (right panel)

  221. 

  222.         self.fDirModel = QFileSystemModel(self)

  223.         self.fDirModel.setNameFilters(Carla.host.get_supported_file_extensions().split(";"))

  224.         self.fDirModel.setRootPath(HOME)

  225. 

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

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

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

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

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

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

  232. 

  233.         self.setProperWindowTitle()

  234. 

  235.         # -------------------------------------------------------------

  236.         # Connect actions to functions

  237. 

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

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

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

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

  242. 

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

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

  245. 

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

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

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

  249. 

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

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

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

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

  254. 

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

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

  257. 

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

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

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

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

  262. 

  263.         self.DebugCallback.connect(self.slot_handleDebugCallback)

  264. 

  265.         self.PluginAddedCallback.connect(self.slot_handlePluginAddedCallback)

  266.         self.PluginRemovedCallback.connect(self.slot_handlePluginRemovedCallback)

  267.         self.PluginRenamedCallback.connect(self.slot_handlePluginRenamedCallback)

  268.         self.PluginUnavailableCallback.connect(self.slot_handlePluginUnavailableCallback)

  269. 

  270.         # parameter (rack, patchbay)

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

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

  273.         # update, reload (rack, patchbay)

  274.         # patchbay

  275. 

  276.         self.EngineStartedCallback.connect(self.slot_handleEngineStartedCallback)

  277.         self.EngineStoppedCallback.connect(self.slot_handleEngineStoppedCallback)

  278. 

  279.         self.ProcessModeChangedCallback.connect(self.slot_handleProcessModeChangedCallback)

  280.         self.TransportModeChangedCallback.connect(self.slot_handleTransportModeChangedCallback)

  281. 

  282.         self.BufferSizeChangedCallback.connect(self.slot_handleBufferSizeChangedCallback)

  283.         self.SampleRateChangedCallback.connect(self.slot_handleSampleRateChangedCallback)

  284. 

  285.         self.InfoCallback.connect(self.slot_handleInfoCallback)

  286.         self.ErrorCallback.connect(self.slot_handleErrorCallback)

  287.         self.QuitCallback.connect(self.slot_handleQuitCallback)

  288. 

  289.         self.SIGUSR1.connect(self.slot_handleSIGUSR1)

  290.         self.SIGTERM.connect(self.slot_handleSIGTERM)

  291. 

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

  293.         # Final setup

  294. 

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

  296. 

  297.     # -----------------------------------------------------------------

  298.     # Called by containers

  299. 

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

  301.         dialog = CarlaSettingsW(self, hasCanvas, hasCanvasGL)

  302.         return dialog.exec_()

  303. 

  304.     def setupContainer(self, showMiniCanvas, canvasThemeData = []):

  305.         if showMiniCanvas:

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

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

  308.             self.ui.miniCanvasPreview.init(self.fContainer.scene, canvasWidth, canvasHeight, self.fSavedSettings["UseCustomMiniCanvasPaint"])

  309.         else:

  310.             self.ui.miniCanvasPreview.hide()

  311. 

  312.         self.ui.mainwidget.hide()

  313.         del self.ui.mainwidget

  314.         self.ui.splitter.insertWidget(0, self.fContainer)

  315. 

  316.     def updateContainer(self, canvasThemeData):

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

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

  319.         self.ui.miniCanvasPreview.init(self.fContainer.scene, canvasWidth, canvasHeight, self.fSavedSettings["UseCustomMiniCanvasPaint"])

  320. 

  321.     # -----------------------------------------------------------------

  322.     # Internal stuff (files)

  323. 

  324.     def loadProjectNow(self):

  325.         if not self.fProjectFilename:

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

  327. 

  328.         self.fIsProjectLoading = True

  329.         Carla.host.load_project(self.fProjectFilename)

  330.         self.fIsProjectLoading = False

  331. 

  332.     @pyqtSlot()

  333.     def slot_loadProjectNow(self):

  334.         self.loadProjectNow()

  335. 

  336.     def loadProjectLater(self, filename):

  337.         self.fProjectFilename = filename

  338.         self.setProperWindowTitle()

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

  340. 

  341.     def saveProjectNow(self):

  342.         if not self.fProjectFilename:

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

  344. 

  345.         Carla.host.save_project(self.fProjectFilename)

  346. 

  347.     # -----------------------------------------------------------------

  348.     # Internal stuff (engine)

  349. 

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

  351.         if Carla.isPlugin:

  352.             return "Plugin"

  353. 

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

  355. 

  356.         # -------------------------------------------------------------

  357.         # read settings

  358. 

  359.         # bool values

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

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

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

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

  364. 

  365.         # int values

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

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

  368. 

  369.         # enums

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

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

  372. 

  373.         # driver name

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

  375. 

  376.         # driver options

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

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

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

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

  381. 

  382.         # -------------------------------------------------------------

  383.         # fix things if needed

  384. 

  385.         if processMode == ENGINE_PROCESS_MODE_CONTINUOUS_RACK:

  386.             forceStereo = True

  387.         elif processMode == ENGINE_PROCESS_MODE_MULTIPLE_CLIENTS and LADISH_APP_NAME:

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

  389.             processMode = ENGINE_PROCESS_MODE_SINGLE_CLIENT

  390. 

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

  392.             transportMode = ENGINE_TRANSPORT_MODE_INTERNAL

  393. 

  394.         # -------------------------------------------------------------

  395.         # apply to engine

  396. 

  397.         Carla.host.set_engine_option(ENGINE_OPTION_FORCE_STEREO,          forceStereo,         "")

  398.         Carla.host.set_engine_option(ENGINE_OPTION_PREFER_PLUGIN_BRIDGES, preferPluginBridges, "")

  399.         Carla.host.set_engine_option(ENGINE_OPTION_PREFER_UI_BRIDGES,     preferUiBridges,     "")

  400.         Carla.host.set_engine_option(ENGINE_OPTION_UIS_ALWAYS_ON_TOP,     uisAlwaysOnTop,      "")

  401. 

  402.         Carla.host.set_engine_option(ENGINE_OPTION_MAX_PARAMETERS,        maxParameters,       "")

  403.         Carla.host.set_engine_option(ENGINE_OPTION_UI_BRIDGES_TIMEOUT,    uiBridgesTimeout,    "")

  404. 

  405.         Carla.host.set_engine_option(ENGINE_OPTION_PROCESS_MODE,          processMode,         "")

  406.         Carla.host.set_engine_option(ENGINE_OPTION_TRANSPORT_MODE,        transportMode,       "")

  407. 

  408.         Carla.host.set_engine_option(ENGINE_OPTION_AUDIO_NUM_PERIODS,     audioNumPeriods,     "")

  409.         Carla.host.set_engine_option(ENGINE_OPTION_AUDIO_BUFFER_SIZE,     audioBufferSize,     "")

  410.         Carla.host.set_engine_option(ENGINE_OPTION_AUDIO_SAMPLE_RATE,     audioSampleRate,     "")

  411.         Carla.host.set_engine_option(ENGINE_OPTION_AUDIO_DEVICE,          0,                   audioDevice)

  412. 

  413.         # save this for later

  414.         Carla.maxParameters = maxParameters

  415. 

  416.         # return selected driver name

  417.         return audioDriver

  418. 

  419.     def startEngine(self):

  420.         audioDriver = self.setEngineSettings()

  421. 

  422.         if not Carla.host.engine_init(audioDriver, self.fClientName):

  423.             if self.fFirstEngineInit:

  424.                 self.fFirstEngineInit = False

  425.                 return

  426. 

  427.             audioError = Carla.host.get_last_error()

  428. 

  429.             if audioError:

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

  431.             else:

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

  433.             return

  434. 

  435.         self.fFirstEngineInit = False

  436. 

  437.     def stopEngine(self):

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

  439.             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"

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

  441.                                                                          QMessageBox.Yes | QMessageBox.No, QMessageBox.No)

  442.             if ask != QMessageBox.Yes:

  443.                 return

  444. 

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

  446.             self.fContainer.removeAllPlugins()

  447. 

  448.         if Carla.host.is_engine_running() and not Carla.host.engine_close():

  449.             print(Carla.host.get_last_error())

  450. 

  451.     # -----------------------------------------------------------------

  452.     # Internal stuff (plugins)

  453. 

  454.     def getExtraPtr(self, plugin):

  455.         ptype = plugin['type']

  456. 

  457.         if ptype == PLUGIN_LADSPA:

  458.             uniqueId = plugin['uniqueId']

  459. 

  460.             self.maybeLoadRDFs()

  461. 

  462.             for rdfItem in self.fLadspaRdfList:

  463.                 if rdfItem.UniqueID == uniqueId:

  464.                     return pointer(rdfItem)

  465. 

  466.         elif ptype in (PLUGIN_GIG, PLUGIN_SF2, PLUGIN_SFZ):

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

  468.                 # return a dummy non-null pointer

  469.                 INTPOINTER = POINTER(c_int)

  470.                 int1 = c_int(0x1)

  471.                 addr = addressof(int1)

  472.                 return cast(addr, INTPOINTER)

  473. 

  474.         return None

  475. 

  476.     def maybeLoadRDFs(self):

  477.         if not self.fLadspaRdfNeedsUpdate:

  478.             return

  479. 

  480.         self.fLadspaRdfNeedsUpdate = False

  481.         self.fLadspaRdfList = []

  482. 

  483.         if not haveLRDF:

  484.             return

  485. 

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

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

  488. 

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

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

  491. 

  492.             try:

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

  494.             except:

  495.                 pass

  496. 

  497.             frLadspa.close()

  498. 

  499.     def setLoadRDFsNeeded(self):

  500.         self.fLadspaRdfNeedsUpdate = True

  501. 

  502.     # -----------------------------------------------------------------

  503.     # Internal stuff (transport)

  504. 

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

  506.         if Carla.sampleRate == 0.0 or not Carla.host.is_engine_running():

  507.             return

  508. 

  509.         timeInfo = Carla.host.get_transport_info()

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

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

  512. 

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

  514.             if playing:

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

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

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

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

  519.             else:

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

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

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

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

  524. 

  525.             self.fLastTransportState = playing

  526. 

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

  528.             time = frame / Carla.sampleRate

  529.             secs = time % 60

  530.             mins = (time / 60) % 60

  531.             hrs  = (time / 3600) % 60

  532. 

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

  534.             self.fLastTransportFrame = frame

  535. 

  536.     def setTransportMenuEnabled(self, enabled):

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

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

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

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

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

  542. 

  543.     # -----------------------------------------------------------------

  544.     # Internal stuff (settings)

  545. 

  546.     def loadSettings(self, firstTime):

  547.         settings = QSettings()

  548. 

  549.         if firstTime:

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

  551. 

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

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

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

  555. 

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

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

  558.             #else:

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

  560. 

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

  562. 

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

  564. 

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

  566.                 if i == 0: continue

  567.                 folder = diskFolders[i]

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

  569. 

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

  571.                 self.setUnifiedTitleAndToolBarOnMac(True)

  572. 

  573.         # ---------------------------------------------

  574.         # plugin checks

  575. 

  576.         if settings.value("Engine/DisableChecks", False, type=bool):

  577.             os.environ["CARLA_DISCOVERY_NO_PROCESSING_CHECKS"] = "true"

  578. 

  579.         elif os.getenv("CARLA_DISCOVERY_NO_PROCESSING_CHECKS"):

  580.             os.environ.pop("CARLA_DISCOVERY_NO_PROCESSING_CHECKS")

  581. 

  582.         # ---------------------------------------------

  583. 

  584.         if not Carla.isPlugin:

  585.             # engine

  586.             self.setEngineSettings(settings)

  587. 

  588.             # plugin paths

  589.             LADSPA_PATH = toList(settings.value("Paths/LADSPA", Carla.DEFAULT_LADSPA_PATH))

  590.             DSSI_PATH   = toList(settings.value("Paths/DSSI",   Carla.DEFAULT_DSSI_PATH))

  591.             LV2_PATH    = toList(settings.value("Paths/LV2",    Carla.DEFAULT_LV2_PATH))

  592.             VST_PATH    = toList(settings.value("Paths/VST",    Carla.DEFAULT_VST_PATH))

  593.             AU_PATH     = toList(settings.value("Paths/AU",     Carla.DEFAULT_AU_PATH))

  594.             CSOUND_PATH = toList(settings.value("Paths/CSOUND", Carla.DEFAULT_CSOUND_PATH))

  595.             GIG_PATH    = toList(settings.value("Paths/GIG",    Carla.DEFAULT_GIG_PATH))

  596.             SF2_PATH    = toList(settings.value("Paths/SF2",    Carla.DEFAULT_SF2_PATH))

  597.             SFZ_PATH    = toList(settings.value("Paths/SFZ",    Carla.DEFAULT_SFZ_PATH))

  598. 

  599.             os.environ["LADSPA_PATH"] = splitter.join(LADSPA_PATH)

  600.             os.environ["DSSI_PATH"]   = splitter.join(DSSI_PATH)

  601.             os.environ["LV2_PATH"]    = splitter.join(LV2_PATH)

  602.             os.environ["VST_PATH"]    = splitter.join(VST_PATH)

  603.             os.environ["AU_PATH"]     = splitter.join(AU_PATH)

  604.             os.environ["CSOUND_PATH"] = splitter.join(CSOUND_PATH)

  605.             os.environ["GIG_PATH"]    = splitter.join(GIG_PATH)

  606.             os.environ["SF2_PATH"]    = splitter.join(SF2_PATH)

  607.             os.environ["SFZ_PATH"]    = splitter.join(SFZ_PATH)

  608. 

  609.         # ---------------------------------------------

  610. 

  611.         # TODO

  612. 

  613.         self.fSavedSettings = {

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

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

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

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

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

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

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

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

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

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

  624.             "UseCustomMiniCanvasPaint":       (settings.value(CARLA_KEY_MAIN_USE_PRO_THEME, True, type=bool) and

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

  626.         }

  627. 

  628.         # ---------------------------------------------

  629. 

  630.         if self.fIdleTimerFast != 0:

  631.             self.killTimer(self.fIdleTimerFast)

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

  633. 

  634.         if self.fIdleTimerSlow != 0:

  635.             self.killTimer(self.fIdleTimerSlow)

  636.             self.fIdleTimerSlow = self.startTimer(self.fSavedSettings[CARLA_KEY_MAIN_REFRESH_INTERVAL]*2)

  637. 

  638.     def saveSettings(self):

  639.         settings = QSettings()

  640. 

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

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

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

  644. 

  645.         diskFolders = []

  646. 

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

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

  649. 

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

  651. 

  652.         self.fContainer.saveSettings(settings)

  653. 

  654.     # -----------------------------------------------------------------

  655.     # Internal stuff (gui)

  656. 

  657.     def setProperWindowTitle(self):

  658.         title = self.fClientName

  659. 

  660.         if self.fProjectFilename:

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

  662.         if self.fSessionManagerName:

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

  664. 

  665.         self.setWindowTitle(title)

  666. 

  667.     # -----------------------------------------------------------------

  668. 

  669.     @pyqtSlot()

  670.     def slot_fileNew(self):

  671.         self.fContainer.removeAllPlugins()

  672.         self.fProjectFilename = ""

  673.         self.setProperWindowTitle()

  674. 

  675.     @pyqtSlot()

  676.     def slot_fileOpen(self):

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

  678.         filenameTry = QFileDialog.getOpenFileName(self, self.tr("Open Carla Project File"), self.fSavedSettings[CARLA_KEY_MAIN_PROJECT_FOLDER], filter=fileFilter)[0]

  679. 

  680.         if not filenameTry:

  681.             return

  682. 

  683.         newFile = True

  684. 

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

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

  687.                                                                           QMessageBox.Yes | QMessageBox.No, QMessageBox.No)

  688.             newFile = ask == QMessageBox.Yes

  689. 

  690.         if newFile:

  691.             self.fContainer.removeAllPlugins()

  692.             self.fProjectFilename = filenameTry

  693.             self.setProperWindowTitle()

  694.             self.loadProjectNow()

  695.         else:

  696.             filenameOld = self.fProjectFilename

  697.             self.fProjectFilename = filenameTry

  698.             self.loadProjectNow()

  699.             self.fProjectFilename = filenameOld

  700. 

  701.     @pyqtSlot()

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

  703.         if self.fProjectFilename and not saveAs:

  704.             return self.saveProjectNow()

  705. 

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

  707.         filenameTry = QFileDialog.getSaveFileName(self, self.tr("Save Carla Project File"), self.fSavedSettings[CARLA_KEY_MAIN_PROJECT_FOLDER], filter=fileFilter)[0]

  708. 

  709.         if not filenameTry:

  710.             return

  711. 

  712.         if not filenameTry.endswith(".carxp"):

  713.             filenameTry += ".carxp"

  714. 

  715.         if self.fProjectFilename != filenameTry:

  716.             self.fProjectFilename = filenameTry

  717.             self.setProperWindowTitle()

  718. 

  719.         self.saveProjectNow()

  720. 

  721.     @pyqtSlot()

  722.     def slot_fileSaveAs(self):

  723.         self.slot_fileSave(True)

  724. 

  725.     # -----------------------------------------------------------------

  726. 

  727.     @pyqtSlot()

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

  729.         if doStart: self.startEngine()

  730. 

  731.         check = Carla.host.is_engine_running()

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

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

  734. 

  735.         if not Carla.isPlugin:

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

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

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

  739. 

  740.             if self.fSessionManagerName != "Non Session Manager":

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

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

  743. 

  744.             self.setTransportMenuEnabled(check)

  745. 

  746.         if check:

  747.             if not Carla.isPlugin:

  748.                 self.refreshTransport(True)

  749. 

  750.             self.fContainer.engineStarted()

  751. 

  752.     @pyqtSlot()

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

  754.         if doStop: self.stopEngine()

  755. 

  756.         # FIXME?

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

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

  759.             self.fContainer.removeAllPlugins()

  760. 

  761.         check = Carla.host.is_engine_running()

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

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

  764. 

  765.         if not Carla.isPlugin:

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

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

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

  769. 

  770.             if self.fSessionManagerName != "Non Session Manager":

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

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

  773. 

  774.             self.setTransportMenuEnabled(check)

  775. 

  776.         if not check:

  777.             self.fTextTransport = ""

  778.             self.fContainer.engineStopped()

  779. 

  780.     # -----------------------------------------------------------------

  781. 

  782.     @pyqtSlot()

  783.     def slot_pluginAdd(self):

  784.         dialog = PluginDatabaseW(self)

  785. 

  786.         if not dialog.exec_():

  787.             return

  788. 

  789.         if not Carla.host.is_engine_running():

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

  791.             return

  792. 

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

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

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

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

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

  798. 

  799.         if not Carla.host.add_plugin(btype, ptype, filename, None, label, extraPtr):

  800.             CustomMessageBox(self, QMessageBox.Critical, self.tr("Error"), self.tr("Failed to load plugin"), charPtrToString(Carla.host.get_last_error()), QMessageBox.Ok, QMessageBox.Ok)

  801.             return

  802. 

  803.     @pyqtSlot()

  804.     def slot_pluginRemoveAll(self):

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

  806.         self.fContainer.removeAllPlugins()

  807.         Carla.host.remove_all_plugins()

  808. 

  809.     # -----------------------------------------------------------------

  810. 

  811.     @pyqtSlot(bool)

  812.     def slot_transportPlayPause(self, toggled):

  813.         if not Carla.host.is_engine_running():

  814.             return

  815. 

  816.         if toggled:

  817.             Carla.host.transport_play()

  818.         else:

  819.             Carla.host.transport_pause()

  820. 

  821.         self.refreshTransport()

  822. 

  823.     @pyqtSlot()

  824.     def slot_transportStop(self):

  825.         if not Carla.host.is_engine_running():

  826.             return

  827. 

  828.         Carla.host.transport_pause()

  829.         Carla.host.transport_relocate(0)

  830. 

  831.         self.refreshTransport()

  832. 

  833.     @pyqtSlot()

  834.     def slot_transportBackwards(self):

  835.         if not Carla.host.is_engine_running():

  836.             return

  837. 

  838.         newFrame = Carla.host.get_current_transport_frame() - 100000

  839. 

  840.         if newFrame < 0:

  841.             newFrame = 0

  842. 

  843.         Carla.host.transport_relocate(newFrame)

  844. 

  845.     @pyqtSlot()

  846.     def slot_transportForwards(self):

  847.         if not Carla.host.is_engine_running():

  848.             return

  849. 

  850.         newFrame = Carla.host.get_current_transport_frame() + 100000

  851.         Carla.host.transport_relocate(newFrame)

  852. 

  853.     # -----------------------------------------------------------------

  854. 

  855.     @pyqtSlot()

  856.     def slot_aboutCarla(self):

  857.         CarlaAboutW(self).exec_()

  858. 

  859.     @pyqtSlot()

  860.     def slot_aboutQt(self):

  861.         QApplication.instance().aboutQt()

  862. 

  863.     # -----------------------------------------------------------------

  864. 

  865.     @pyqtSlot(int)

  866.     def slot_diskFolderChanged(self, index):

  867.         if index < 0:

  868.             return

  869.         elif index == 0:

  870.             filename = HOME

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

  872.         else:

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

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

  875. 

  876.         self.fDirModel.setRootPath(filename)

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

  878. 

  879.     @pyqtSlot()

  880.     def slot_diskFolderAdd(self):

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

  882. 

  883.         if newPath:

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

  885.                 newPath = newPath[:-1]

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

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

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

  889. 

  890.     @pyqtSlot()

  891.     def slot_diskFolderRemove(self):

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

  893. 

  894.         if index <= 0:

  895.             return

  896. 

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

  898. 

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

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

  901. 

  902.     @pyqtSlot(QModelIndex)

  903.     def slot_fileTreeDoubleClicked(self, modelIndex):

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

  905. 

  906.         if not Carla.host.load_file(filename):

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

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

  909.                              Carla.host.get_last_error(), QMessageBox.Ok, QMessageBox.Ok)

  910. 

  911.     # -----------------------------------------------------------------

  912. 

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

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

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

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

  917. 

  918.     # -----------------------------------------------------------------

  919. 

  920.     @pyqtSlot(int, str)

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

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

  923. 

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

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

  926. 

  927.     @pyqtSlot(int)

  928.     def slot_handlePluginRemovedCallback(self, pluginId):

  929.         self.fContainer.removePlugin(pluginId)

  930. 

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

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

  933. 

  934.     @pyqtSlot(int, str)

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

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

  937. 

  938.     @pyqtSlot(int, str)

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

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

  941. 

  942.     # -----------------------------------------------------------------

  943. 

  944.     @pyqtSlot(str)

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

  946.         Carla.processMode   = processMode

  947.         Carla.transportMode = transportMode

  948.         Carla.bufferSize    = Carla.host.get_buffer_size()

  949.         Carla.sampleRate    = Carla.host.get_sample_rate()

  950. 

  951.         self.slot_engineStart(False)

  952. 

  953.         if self.fIdleTimerFast == 0:

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

  955.         if self.fIdleTimerSlow == 0:

  956.             self.fIdleTimerSlow = self.startTimer(self.fSavedSettings[CARLA_KEY_MAIN_REFRESH_INTERVAL]*2)

  957. 

  958.     @pyqtSlot()

  959.     def slot_handleEngineStoppedCallback(self):

  960.         if self.fIdleTimerFast != 0:

  961.             self.killTimer(self.fIdleTimerFast)

  962.             self.fIdleTimerFast = 0

  963. 

  964.         if self.fIdleTimerSlow != 0:

  965.             self.killTimer(self.fIdleTimerSlow)

  966.             self.fIdleTimerSlow = 0

  967. 

  968.         self.slot_engineStop(False)

  969. 

  970.         Carla.bufferSize = 0

  971.         Carla.sampleRate = 0.0

  972. 

  973.     # -----------------------------------------------------------------

  974. 

  975.     @pyqtSlot(int)

  976.     def slot_handleProcessModeChangedCallback(self, newProcessMode):

  977.         self.fEngineChanged = True

  978. 

  979.     @pyqtSlot(int)

  980.     def slot_handleTransportModeChangedCallback(self, newTransportMode):

  981.         self.fEngineChanged = True

  982. 

  983.     # -----------------------------------------------------------------

  984. 

  985.     @pyqtSlot(int)

  986.     def slot_handleBufferSizeChangedCallback(self, newBufferSize):

  987.         self.fEngineChanged = True

  988. 

  989.     @pyqtSlot(float)

  990.     def slot_handleSampleRateChangedCallback(self, newSampleRate):

  991.         self.fEngineChanged = True

  992. 

  993.     # -----------------------------------------------------------------

  994. 

  995.     @pyqtSlot(str)

  996.     def slot_handleInfoCallback(self, info):

  997.         pass

  998. 

  999.     @pyqtSlot(str)

  1000.     def slot_handleErrorCallback(self, error):

  1001.         pass

  1002. 

  1003.     @pyqtSlot()

  1004.     def slot_handleQuitCallback(self):

  1005.         pass

  1006. 

  1007.     # -----------------------------------------------------------------

  1008. 

  1009.     @pyqtSlot()

  1010.     def slot_handleSIGUSR1(self):

  1011.         print("Got SIGUSR1 -> Saving project now")

  1012.         QTimer.singleShot(0, self.slot_fileSave)

  1013. 

  1014.     @pyqtSlot()

  1015.     def slot_handleSIGTERM(self):

  1016.         print("Got SIGTERM -> Closing now")

  1017.         self.close()

  1018. 

  1019.     # -----------------------------------------------------------------

  1020. 

  1021.     def timerEvent(self, event):

  1022.         if event.timerId() == self.fIdleTimerFast:

  1023.             if not Carla.isPlugin:

  1024.                 Carla.host.engine_idle()

  1025.                 self.refreshTransport()

  1026. 

  1027.             self.fContainer.idleFast()

  1028. 

  1029.         elif event.timerId() == self.fIdleTimerSlow:

  1030.             if self.fEngineChanged:

  1031.                 self.fContainer.engineChanged()

  1032.                 self.fEngineChanged = False

  1033. 

  1034.             self.fContainer.idleSlow()

  1035. 

  1036.         QMainWindow.timerEvent(self, event)

  1037. 

  1038.     def closeEvent(self, event):

  1039.         if self.fIdleTimerFast != 0:

  1040.             self.killTimer(self.fIdleTimerFast)

  1041.             self.fIdleTimerFast = 0

  1042. 

  1043.         if self.fIdleTimerSlow != 0:

  1044.             self.killTimer(self.fIdleTimerSlow)

  1045.             self.fIdleTimerSlow = 0

  1046. 

  1047.         self.saveSettings()

  1048. 

  1049.         if Carla.host.is_engine_running():

  1050.             Carla.host.set_engine_about_to_close()

  1051.             self.ui.act_plugin_remove_all.setEnabled(False)

  1052.             self.fContainer.removeAllPlugins()

  1053.             self.stopEngine()

  1054. 

  1055.         QMainWindow.closeEvent(self, event)

  1056. 

  1057. # ------------------------------------------------------------------------------------------------------------

  1058. # Engine callback

  1059. 

  1060. def engineCallback(ptr, action, pluginId, value1, value2, value3, valueStr):

  1061.     if action == ENGINE_CALLBACK_PROCESS_MODE_CHANGED:

  1062.         Carla.processMode = value1

  1063.         if Carla.gui is not None:

  1064.             Carla.gui.ProcessModeChangedCallback.emit(value1)

  1065.         return

  1066. 

  1067.     if action == ENGINE_CALLBACK_TRANSPORT_MODE_CHANGED:

  1068.         Carla.transportMode = value1

  1069.         if Carla.gui is not None:

  1070.             Carla.gui.TransportModeChangedCallback.emit(value1)

  1071.         return

  1072. 

  1073.     if action == ENGINE_CALLBACK_BUFFER_SIZE_CHANGED:

  1074.         Carla.bufferSize = value1

  1075.         if Carla.gui is not None:

  1076.             Carla.gui.BufferSizeChangedCallback.emit(value1)

  1077.         return

  1078. 

  1079.     if action == ENGINE_CALLBACK_SAMPLE_RATE_CHANGED:

  1080.         Carla.sampleRate = value1

  1081.         if Carla.gui is not None:

  1082.             Carla.gui.SampleRateChangedCallback.emit(value3)

  1083.         return

  1084. 

  1085.     if Carla.gui is None:

  1086.         print("WARNING: Got engine callback but UI is not ready : ", pluginId, value1, value2, value3, valueStr)

  1087.         return

  1088. 

  1089.     valueStr = charPtrToString(valueStr)

  1090. 

  1091.     if action == ENGINE_CALLBACK_DEBUG:

  1092.         Carla.gui.DebugCallback.emit(pluginId, value1, value2, value3, valueStr)

  1093.     elif action == ENGINE_CALLBACK_PLUGIN_ADDED:

  1094.         Carla.gui.PluginAddedCallback.emit(pluginId, valueStr)

  1095.     elif action == ENGINE_CALLBACK_PLUGIN_REMOVED:

  1096.         Carla.gui.PluginRemovedCallback.emit(pluginId)

  1097.     elif action == ENGINE_CALLBACK_PLUGIN_RENAMED:

  1098.         Carla.gui.PluginRenamedCallback.emit(pluginId, valueStr)

  1099.     elif action == ENGINE_CALLBACK_PLUGIN_UNAVAILABLE:

  1100.         Carla.gui.PluginUnavailableCallback.emit(pluginId, valueStr)

  1101.     elif action == ENGINE_CALLBACK_PARAMETER_VALUE_CHANGED:

  1102.         Carla.gui.ParameterValueChangedCallback.emit(pluginId, value1, value3)

  1103.     elif action == ENGINE_CALLBACK_PARAMETER_DEFAULT_CHANGED:

  1104.         Carla.gui.ParameterDefaultChangedCallback.emit(pluginId, value1, value3)

  1105.     elif action == ENGINE_CALLBACK_PARAMETER_MIDI_CC_CHANGED:

  1106.         Carla.gui.ParameterMidiCcChangedCallback.emit(pluginId, value1, value2)

  1107.     elif action == ENGINE_CALLBACK_PARAMETER_MIDI_CHANNEL_CHANGED:

  1108.         Carla.gui.ParameterMidiChannelChangedCallback.emit(pluginId, value1, value2)

  1109.     elif action == ENGINE_CALLBACK_PROGRAM_CHANGED:

  1110.         Carla.gui.ProgramChangedCallback.emit(pluginId, value1)

  1111.     elif action == ENGINE_CALLBACK_MIDI_PROGRAM_CHANGED:

  1112.         Carla.gui.MidiProgramChangedCallback.emit(pluginId, value1)

  1113.     elif action == ENGINE_CALLBACK_UI_STATE_CHANGED:

  1114.         Carla.gui.UiStateChangedCallback.emit(pluginId, value1)

  1115.     elif action == ENGINE_CALLBACK_NOTE_ON:

  1116.         Carla.gui.NoteOnCallback.emit(pluginId, value1, value2, int(value3))

  1117.     elif action == ENGINE_CALLBACK_NOTE_OFF:

  1118.         Carla.gui.NoteOffCallback.emit(pluginId, value1, value2)

  1119.     elif action == ENGINE_CALLBACK_UPDATE:

  1120.         Carla.gui.UpdateCallback.emit(pluginId)

  1121.     elif action == ENGINE_CALLBACK_RELOAD_INFO:

  1122.         Carla.gui.ReloadInfoCallback.emit(pluginId)

  1123.     elif action == ENGINE_CALLBACK_RELOAD_PARAMETERS:

  1124.         Carla.gui.ReloadParametersCallback.emit(pluginId)

  1125.     elif action == ENGINE_CALLBACK_RELOAD_PROGRAMS:

  1126.         Carla.gui.ReloadProgramsCallback.emit(pluginId)

  1127.     elif action == ENGINE_CALLBACK_RELOAD_ALL:

  1128.         Carla.gui.ReloadAllCallback.emit(pluginId)

  1129.     elif action == ENGINE_CALLBACK_PATCHBAY_CLIENT_ADDED:

  1130.         Carla.gui.PatchbayClientAddedCallback.emit(pluginId, value1, valueStr)

  1131.     elif action == ENGINE_CALLBACK_PATCHBAY_CLIENT_REMOVED:

  1132.         Carla.gui.PatchbayClientRemovedCallback.emit(pluginId)

  1133.     elif action == ENGINE_CALLBACK_PATCHBAY_CLIENT_RENAMED:

  1134.         Carla.gui.PatchbayClientRenamedCallback.emit(pluginId, valueStr)

  1135.     elif action == ENGINE_CALLBACK_PATCHBAY_CLIENT_ICON_CHANGED:

  1136.         Carla.gui.PatchbayClientIconChangedCallback.emit(pluginId, value1)

  1137.     elif action == ENGINE_CALLBACK_PATCHBAY_PORT_ADDED:

  1138.         Carla.gui.PatchbayPortAddedCallback.emit(pluginId, value1, value2, valueStr)

  1139.     elif action == ENGINE_CALLBACK_PATCHBAY_PORT_REMOVED:

  1140.         Carla.gui.PatchbayPortRemovedCallback.emit(pluginId, value1)

  1141.     elif action == ENGINE_CALLBACK_PATCHBAY_PORT_RENAMED:

  1142.         Carla.gui.PatchbayPortRenamedCallback.emit(pluginId, value1, valueStr)

  1143.     elif action == ENGINE_CALLBACK_PATCHBAY_CONNECTION_ADDED:

  1144.         Carla.gui.PatchbayConnectionAddedCallback.emit(pluginId, value1, value2)

  1145.     elif action == ENGINE_CALLBACK_PATCHBAY_CONNECTION_REMOVED:

  1146.         Carla.gui.PatchbayConnectionRemovedCallback.emit(pluginId, value1, value2)

  1147.     elif action == ENGINE_CALLBACK_ENGINE_STARTED:

  1148.         Carla.gui.EngineStartedCallback.emit(value1, value2, valueStr)

  1149.     elif action == ENGINE_CALLBACK_ENGINE_STOPPED:

  1150.         Carla.gui.EngineStoppedCallback.emit()

  1151.     elif action == ENGINE_CALLBACK_INFO:

  1152.         Carla.gui.InfoCallback.emit(valueStr)

  1153.     elif action == ENGINE_CALLBACK_ERROR:

  1154.         Carla.gui.ErrorCallback.emit(valueStr)

  1155.     elif action == ENGINE_CALLBACK_QUIT:

  1156.         Carla.gui.QuitCallback.emit()