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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.         if Carla.host is not None:

  158.             Carla.host.set_engine_callback(engineCallback)

  159. 

  160.         # -------------------------------------------------------------

  161.         # Internal stuff

  162. 

  163.         self.fIdleTimerFast = 0

  164.         self.fIdleTimerSlow = 0

  165. 

  166.         self.fIsProjectLoading = False

  167.         self.fProjectFilename  = ""

  168. 

  169.         self.fLadspaRdfNeedsUpdate = True

  170.         self.fLadspaRdfList = []

  171. 

  172.         self.fLastTransportFrame = 0

  173.         self.fLastTransportState = False

  174.         self.fTransportText = ""

  175. 

  176.         # when true, call engineChanged() asap

  177.         self.fEngineChanged = False

  178. 

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

  180.         self.fFirstEngineInit = True

  181. 

  182.         self.fSavedSettings = {}

  183. 

  184.         if LADISH_APP_NAME:

  185.             self.fClientName         = LADISH_APP_NAME

  186.             self.fSessionManagerName = "LADISH"

  187.         elif NSM_URL:

  188.             self.fClientName         = "Carla.tmp"

  189.             self.fSessionManagerName = "Non Session Manager"

  190.         else:

  191.             self.fClientName         = "Carla"

  192.             self.fSessionManagerName = ""

  193. 

  194.         # -------------------------------------------------------------

  195.         # Load Settings

  196. 

  197.         self.loadSettings(True)

  198. 

  199.         # -------------------------------------------------------------

  200.         # Set up GUI (engine stopped)

  201. 

  202.         if Carla.isPlugin:

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

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

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

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

  207.         else:

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

  209. 

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

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

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

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

  214. 

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

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

  217. 

  218.         self.setTransportMenuEnabled(False)

  219. 

  220.         # -------------------------------------------------------------

  221.         # Set up GUI (right panel)

  222. 

  223.         self.fDirModel = QFileSystemModel(self)

  224.         self.fDirModel.setRootPath(HOME)

  225. 

  226.         if Carla.host is not None:

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

  228. 

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

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

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

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

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

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

  235. 

  236.         self.setProperWindowTitle()

  237. 

  238.         # -------------------------------------------------------------

  239.         # Connect actions to functions

  240. 

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

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

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

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

  245. 

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

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

  248. 

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

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

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

  252. 

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

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

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

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

  257. 

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

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

  260. 

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

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

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

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

  265. 

  266.         self.DebugCallback.connect(self.slot_handleDebugCallback)

  267. 

  268.         self.PluginAddedCallback.connect(self.slot_handlePluginAddedCallback)

  269.         self.PluginRemovedCallback.connect(self.slot_handlePluginRemovedCallback)

  270.         self.PluginRenamedCallback.connect(self.slot_handlePluginRenamedCallback)

  271.         self.PluginUnavailableCallback.connect(self.slot_handlePluginUnavailableCallback)

  272. 

  273.         # parameter (rack, patchbay)

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

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

  276.         # update, reload (rack, patchbay)

  277.         # patchbay

  278. 

  279.         self.EngineStartedCallback.connect(self.slot_handleEngineStartedCallback)

  280.         self.EngineStoppedCallback.connect(self.slot_handleEngineStoppedCallback)

  281. 

  282.         self.ProcessModeChangedCallback.connect(self.slot_handleProcessModeChangedCallback)

  283.         self.TransportModeChangedCallback.connect(self.slot_handleTransportModeChangedCallback)

  284. 

  285.         self.BufferSizeChangedCallback.connect(self.slot_handleBufferSizeChangedCallback)

  286.         self.SampleRateChangedCallback.connect(self.slot_handleSampleRateChangedCallback)

  287. 

  288.         self.InfoCallback.connect(self.slot_handleInfoCallback)

  289.         self.ErrorCallback.connect(self.slot_handleErrorCallback)

  290.         self.QuitCallback.connect(self.slot_handleQuitCallback)

  291. 

  292.         self.SIGUSR1.connect(self.slot_handleSIGUSR1)

  293.         self.SIGTERM.connect(self.slot_handleSIGTERM)

  294. 

  295.         # -------------------------------------------------------------

  296.         # Final setup

  297. 

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

  299. 

  300.     # -----------------------------------------------------------------

  301.     # Called by containers

  302. 

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

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

  305.         return dialog.exec_()

  306. 

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

  308.         if showMiniCanvas:

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

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

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

  312.         else:

  313.             self.ui.miniCanvasPreview.hide()

  314. 

  315.         self.ui.splitter.insertWidget(1, self.fContainer)

  316. 

  317.     def updateContainer(self, canvasThemeData):

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

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

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

  321. 

  322.     # -----------------------------------------------------------------

  323.     # Internal stuff (files)

  324. 

  325.     def loadProjectNow(self):

  326.         if not self.fProjectFilename:

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

  328. 

  329.         self.fIsProjectLoading = True

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

  331.         self.fIsProjectLoading = False

  332. 

  333.     @pyqtSlot()

  334.     def slot_loadProjectNow(self):

  335.         self.loadProjectNow()

  336. 

  337.     def loadProjectLater(self, filename):

  338.         self.fProjectFilename = filename

  339.         self.setProperWindowTitle()

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

  341. 

  342.     def saveProjectNow(self):

  343.         if not self.fProjectFilename:

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

  345. 

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

  347. 

  348.     # -----------------------------------------------------------------

  349.     # Internal stuff (engine)

  350. 

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

  352.         if Carla.isPlugin:

  353.             return "Plugin"

  354. 

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

  356. 

  357.         # -------------------------------------------------------------

  358.         # read settings

  359. 

  360.         # bool values

  361.         try:

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

  363.         except:

  364.             forceStereo = CARLA_DEFAULT_FORCE_STEREO

  365. 

  366.         try:

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

  368.         except:

  369.             preferPluginBridges = CARLA_DEFAULT_PREFER_PLUGIN_BRIDGES

  370. 

  371.         try:

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

  373.         except:

  374.             preferUiBridges = CARLA_DEFAULT_PREFER_UI_BRIDGES

  375. 

  376.         try:

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

  378.         except:

  379.             uisAlwaysOnTop = CARLA_DEFAULT_UIS_ALWAYS_ON_TOP

  380. 

  381.         # int values

  382.         try:

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

  384.         except:

  385.             maxParameters = CARLA_DEFAULT_MAX_PARAMETERS

  386. 

  387.         try:

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

  389.         except:

  390.             uiBridgesTimeout = CARLA_DEFAULT_UI_BRIDGES_TIMEOUT

  391. 

  392.         # enums

  393.         try:

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

  395.         except:

  396.             processMode = CARLA_DEFAULT_PROCESS_MODE

  397. 

  398.         try:

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

  400.         except:

  401.             transportMode = CARLA_DEFAULT_TRANSPORT_MODE

  402. 

  403.         # driver name

  404.         try:

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

  406.         except:

  407.             audioDriver = CARLA_DEFAULT_AUDIO_DRIVER

  408. 

  409.         # driver options

  410.         try:

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

  412.         except:

  413.             audioDevice = ""

  414. 

  415.         try:

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

  417.         except:

  418.             audioNumPeriods = CARLA_DEFAULT_AUDIO_NUM_PERIODS

  419. 

  420.         try:

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

  422.         except:

  423.             audioBufferSize = CARLA_DEFAULT_AUDIO_BUFFER_SIZE

  424. 

  425.         try:

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

  427.         except:

  428.             audioSampleRate = CARLA_DEFAULT_AUDIO_SAMPLE_RATE

  429. 

  430.         # -------------------------------------------------------------

  431.         # fix things if needed

  432. 

  433.         if processMode == ENGINE_PROCESS_MODE_CONTINUOUS_RACK:

  434.             forceStereo = True

  435.         elif processMode == ENGINE_PROCESS_MODE_MULTIPLE_CLIENTS and LADISH_APP_NAME:

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

  437.             processMode = ENGINE_PROCESS_MODE_SINGLE_CLIENT

  438. 

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

  440.             transportMode = ENGINE_TRANSPORT_MODE_INTERNAL

  441. 

  442.         # -------------------------------------------------------------

  443.         # apply to engine

  444. 

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

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

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

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

  449. 

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

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

  452. 

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

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

  455. 

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

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

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

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

  460. 

  461.         # save this for later

  462.         Carla.maxParameters = maxParameters

  463. 

  464.         # return selected driver name

  465.         return audioDriver

  466. 

  467.     def startEngine(self):

  468.         audioDriver = self.setEngineSettings()

  469. 

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

  471.             if self.fFirstEngineInit:

  472.                 self.fFirstEngineInit = False

  473.                 return

  474. 

  475.             audioError = Carla.host.get_last_error()

  476. 

  477.             if audioError:

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

  479.             else:

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

  481.             return

  482. 

  483.         self.fFirstEngineInit = False

  484. 

  485.     def stopEngine(self):

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

  487.             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"

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

  489.                                                                          QMessageBox.Yes | QMessageBox.No, QMessageBox.No)

  490.             if ask != QMessageBox.Yes:

  491.                 return

  492. 

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

  494.             self.fContainer.removeAllPlugins()

  495. 

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

  497.             print(Carla.host.get_last_error())

  498. 

  499.     # -----------------------------------------------------------------

  500.     # Internal stuff (plugins)

  501. 

  502.     def getExtraPtr(self, plugin):

  503.         ptype = plugin['type']

  504. 

  505.         if ptype == PLUGIN_LADSPA:

  506.             uniqueId = plugin['uniqueId']

  507. 

  508.             self.maybeLoadRDFs()

  509. 

  510.             for rdfItem in self.fLadspaRdfList:

  511.                 if rdfItem.UniqueID == uniqueId:

  512.                     return pointer(rdfItem)

  513. 

  514.         elif ptype in (PLUGIN_FILE_GIG, PLUGIN_FILE_SF2):

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

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

  517. 

  518.         return None

  519. 

  520.     def maybeLoadRDFs(self):

  521.         if not self.fLadspaRdfNeedsUpdate:

  522.             return

  523. 

  524.         self.fLadspaRdfNeedsUpdate = False

  525.         self.fLadspaRdfList = []

  526. 

  527.         if not haveLRDF:

  528.             return

  529. 

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

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

  532. 

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

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

  535. 

  536.             try:

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

  538.             except:

  539.                 pass

  540. 

  541.             frLadspa.close()

  542. 

  543.     def setLoadRDFsNeeded(self):

  544.         self.fLadspaRdfNeedsUpdate = True

  545. 

  546.     # -----------------------------------------------------------------

  547.     # Internal stuff (transport)

  548. 

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

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

  551.             return

  552. 

  553.         timeInfo = Carla.host.get_transport_info()

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

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

  556. 

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

  558.             if playing:

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

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

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

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

  563.             else:

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

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

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

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

  568. 

  569.             self.fLastTransportState = playing

  570. 

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

  572.             time = frame / Carla.sampleRate

  573.             secs = time % 60

  574.             mins = (time / 60) % 60

  575.             hrs  = (time / 3600) % 60

  576. 

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

  578.             self.fLastTransportFrame = frame

  579. 

  580.     def setTransportMenuEnabled(self, enabled):

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

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

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

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

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

  586. 

  587.     # -----------------------------------------------------------------

  588.     # Internal stuff (settings)

  589. 

  590.     def loadSettings(self, firstTime):

  591.         settings = QSettings()

  592. 

  593.         if firstTime:

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

  595. 

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

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

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

  599. 

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

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

  602.             #else:

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

  604. 

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

  606. 

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

  608. 

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

  610.                 if i == 0: continue

  611.                 folder = diskFolders[i]

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

  613. 

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

  615.                 self.setUnifiedTitleAndToolBarOnMac(True)

  616. 

  617.         # ---------------------------------------------

  618.         # plugin checks

  619. 

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

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

  622. 

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

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

  625. 

  626.         # ---------------------------------------------

  627. 

  628.         if not Carla.isPlugin:

  629.             # engine

  630.             self.setEngineSettings(settings)

  631. 

  632.             # plugin paths

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

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

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

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

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

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

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

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

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

  642. 

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

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

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

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

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

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

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

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

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

  652. 

  653.         # ---------------------------------------------

  654. 

  655.         # TODO

  656. 

  657.         self.fSavedSettings = {

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

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

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

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

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

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

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

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

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

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

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

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

  670.         }

  671. 

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

  673. 

  674.         if self.fIdleTimerFast != 0:

  675.             self.killTimer(self.fIdleTimerFast)

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

  677. 

  678.         if self.fIdleTimerSlow != 0:

  679.             self.killTimer(self.fIdleTimerSlow)

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

  681. 

  682.     def saveSettings(self):

  683.         settings = QSettings()

  684. 

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

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

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

  688. 

  689.         diskFolders = []

  690. 

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

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

  693. 

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

  695. 

  696.         self.fContainer.saveSettings(settings)

  697. 

  698.     # -----------------------------------------------------------------

  699.     # Internal stuff (gui)

  700. 

  701.     def setProperWindowTitle(self):

  702.         title = self.fClientName

  703. 

  704.         if self.fProjectFilename:

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

  706.         if self.fSessionManagerName:

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

  708. 

  709.         self.setWindowTitle(title)

  710. 

  711.     # -----------------------------------------------------------------

  712. 

  713.     @pyqtSlot()

  714.     def slot_fileNew(self):

  715.         self.fContainer.removeAllPlugins()

  716.         self.fProjectFilename = ""

  717.         self.setProperWindowTitle()

  718. 

  719.     @pyqtSlot()

  720.     def slot_fileOpen(self):

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

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

  723. 

  724.         if not filenameTry:

  725.             return

  726. 

  727.         newFile = True

  728. 

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

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

  731.                                                                           QMessageBox.Yes | QMessageBox.No, QMessageBox.No)

  732.             newFile = ask == QMessageBox.Yes

  733. 

  734.         if newFile:

  735.             self.fContainer.removeAllPlugins()

  736.             self.fProjectFilename = filenameTry

  737.             self.setProperWindowTitle()

  738.             self.loadProjectNow()

  739.         else:

  740.             filenameOld = self.fProjectFilename

  741.             self.fProjectFilename = filenameTry

  742.             self.loadProjectNow()

  743.             self.fProjectFilename = filenameOld

  744. 

  745.     @pyqtSlot()

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

  747.         if self.fProjectFilename and not saveAs:

  748.             return self.saveProjectNow()

  749. 

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

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

  752. 

  753.         if not filenameTry:

  754.             return

  755. 

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

  757.             filenameTry += ".carxp"

  758. 

  759.         if self.fProjectFilename != filenameTry:

  760.             self.fProjectFilename = filenameTry

  761.             self.setProperWindowTitle()

  762. 

  763.         self.saveProjectNow()

  764. 

  765.     @pyqtSlot()

  766.     def slot_fileSaveAs(self):

  767.         self.slot_fileSave(True)

  768. 

  769.     # -----------------------------------------------------------------

  770. 

  771.     @pyqtSlot()

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

  773.         if doStart: self.startEngine()

  774. 

  775.         check = Carla.host.is_engine_running()

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

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

  778. 

  779.         if not Carla.isPlugin:

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

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

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

  783. 

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

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

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

  787. 

  788.             self.setTransportMenuEnabled(check)

  789. 

  790.         if check:

  791.             if not Carla.isPlugin:

  792.                 self.refreshTransport(True)

  793. 

  794.             self.fContainer.engineStarted()

  795. 

  796.     @pyqtSlot()

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

  798.         if doStop: self.stopEngine()

  799. 

  800.         # FIXME?

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

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

  803.             self.fContainer.removeAllPlugins()

  804. 

  805.         check = Carla.host.is_engine_running()

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

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

  808. 

  809.         if not Carla.isPlugin:

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

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

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

  813. 

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

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

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

  817. 

  818.             self.setTransportMenuEnabled(check)

  819. 

  820.         if not check:

  821.             self.fTextTransport = ""

  822.             self.fContainer.engineStopped()

  823. 

  824.     # -----------------------------------------------------------------

  825. 

  826.     @pyqtSlot()

  827.     def slot_pluginAdd(self):

  828.         dialog = PluginDatabaseW(self)

  829. 

  830.         if not dialog.exec_():

  831.             return

  832. 

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

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

  835.             return

  836. 

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

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

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

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

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

  842. 

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

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

  845.             return

  846. 

  847.     @pyqtSlot()

  848.     def slot_pluginRemoveAll(self):

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

  850.         self.fContainer.removeAllPlugins()

  851.         Carla.host.remove_all_plugins()

  852. 

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

  854. 

  855.     @pyqtSlot(bool)

  856.     def slot_transportPlayPause(self, toggled):

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

  858.             return

  859. 

  860.         if toggled:

  861.             Carla.host.transport_play()

  862.         else:

  863.             Carla.host.transport_pause()

  864. 

  865.         self.refreshTransport()

  866. 

  867.     @pyqtSlot()

  868.     def slot_transportStop(self):

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

  870.             return

  871. 

  872.         Carla.host.transport_pause()

  873.         Carla.host.transport_relocate(0)

  874. 

  875.         self.refreshTransport()

  876. 

  877.     @pyqtSlot()

  878.     def slot_transportBackwards(self):

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

  880.             return

  881. 

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

  883. 

  884.         if newFrame < 0:

  885.             newFrame = 0

  886. 

  887.         Carla.host.transport_relocate(newFrame)

  888. 

  889.     @pyqtSlot()

  890.     def slot_transportForwards(self):

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

  892.             return

  893. 

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

  895.         Carla.host.transport_relocate(newFrame)

  896. 

  897.     # -----------------------------------------------------------------

  898. 

  899.     @pyqtSlot()

  900.     def slot_aboutCarla(self):

  901.         CarlaAboutW(self).exec_()

  902. 

  903.     @pyqtSlot()

  904.     def slot_aboutQt(self):

  905.         QApplication.instance().aboutQt()

  906. 

  907.     # -----------------------------------------------------------------

  908. 

  909.     @pyqtSlot(int)

  910.     def slot_diskFolderChanged(self, index):

  911.         if index < 0:

  912.             return

  913.         elif index == 0:

  914.             filename = HOME

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

  916.         else:

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

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

  919. 

  920.         self.fDirModel.setRootPath(filename)

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

  922. 

  923.     @pyqtSlot()

  924.     def slot_diskFolderAdd(self):

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

  926. 

  927.         if newPath:

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

  929.                 newPath = newPath[:-1]

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

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

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

  933. 

  934.     @pyqtSlot()

  935.     def slot_diskFolderRemove(self):

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

  937. 

  938.         if index <= 0:

  939.             return

  940. 

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

  942. 

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

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

  945. 

  946.     @pyqtSlot(QModelIndex)

  947.     def slot_fileTreeDoubleClicked(self, modelIndex):

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

  949. 

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

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

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

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

  954. 

  955.     # -----------------------------------------------------------------

  956. 

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

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

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

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

  961. 

  962.     # -----------------------------------------------------------------

  963. 

  964.     @pyqtSlot(int, str)

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

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

  967. 

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

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

  970. 

  971.     @pyqtSlot(int)

  972.     def slot_handlePluginRemovedCallback(self, pluginId):

  973.         self.fContainer.removePlugin(pluginId)

  974. 

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

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

  977. 

  978.     @pyqtSlot(int, str)

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

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

  981. 

  982.     @pyqtSlot(int, str)

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

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

  985. 

  986.     # -----------------------------------------------------------------

  987. 

  988.     @pyqtSlot(str)

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

  990.         Carla.processMode   = processMode

  991.         Carla.transportMode = transportMode

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

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

  994. 

  995.         self.slot_engineStart(False)

  996. 

  997.         if self.fIdleTimerFast == 0:

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

  999.         if self.fIdleTimerSlow == 0:

  1000.             self.fIdleTimerSlow = self.startTimer(self.fSavedSettings[CARLA_KEY_MAIN_REFRESH_INTERVAL]*2)

  1001. 

  1002.     @pyqtSlot()

  1003.     def slot_handleEngineStoppedCallback(self):

  1004.         if self.fIdleTimerFast != 0:

  1005.             self.killTimer(self.fIdleTimerFast)

  1006.             self.fIdleTimerFast = 0

  1007. 

  1008.         if self.fIdleTimerSlow != 0:

  1009.             self.killTimer(self.fIdleTimerSlow)

  1010.             self.fIdleTimerSlow = 0

  1011. 

  1012.         self.slot_engineStop(False)

  1013. 

  1014.         Carla.bufferSize = 0

  1015.         Carla.sampleRate = 0.0

  1016. 

  1017.     # -----------------------------------------------------------------

  1018. 

  1019.     @pyqtSlot(int)

  1020.     def slot_handleProcessModeChangedCallback(self, newProcessMode):

  1021.         self.fEngineChanged = True

  1022. 

  1023.     @pyqtSlot(int)

  1024.     def slot_handleTransportModeChangedCallback(self, newTransportMode):

  1025.         self.fEngineChanged = True

  1026. 

  1027.     # -----------------------------------------------------------------

  1028. 

  1029.     @pyqtSlot(int)

  1030.     def slot_handleBufferSizeChangedCallback(self, newBufferSize):

  1031.         self.fEngineChanged = True

  1032. 

  1033.     @pyqtSlot(float)

  1034.     def slot_handleSampleRateChangedCallback(self, newSampleRate):

  1035.         self.fEngineChanged = True

  1036. 

  1037.     # -----------------------------------------------------------------

  1038. 

  1039.     @pyqtSlot(str)

  1040.     def slot_handleInfoCallback(self, info):

  1041.         pass

  1042. 

  1043.     @pyqtSlot(str)

  1044.     def slot_handleErrorCallback(self, error):

  1045.         pass

  1046. 

  1047.     @pyqtSlot()

  1048.     def slot_handleQuitCallback(self):

  1049.         pass

  1050. 

  1051.     # -----------------------------------------------------------------

  1052. 

  1053.     @pyqtSlot()

  1054.     def slot_handleSIGUSR1(self):

  1055.         print("Got SIGUSR1 -> Saving project now")

  1056.         QTimer.singleShot(0, self.slot_fileSave)

  1057. 

  1058.     @pyqtSlot()

  1059.     def slot_handleSIGTERM(self):

  1060.         print("Got SIGTERM -> Closing now")

  1061.         self.close()

  1062. 

  1063.     # -----------------------------------------------------------------

  1064. 

  1065.     def timerEvent(self, event):

  1066.         if event.timerId() == self.fIdleTimerFast:

  1067.             #if not Carla.isPlugin:

  1068.             Carla.host.engine_idle()

  1069.             self.refreshTransport()

  1070. 

  1071.             self.fContainer.idleFast()

  1072. 

  1073.         elif event.timerId() == self.fIdleTimerSlow:

  1074.             if self.fEngineChanged:

  1075.                 self.fContainer.engineChanged()

  1076.                 self.fEngineChanged = False

  1077. 

  1078.             self.fContainer.idleSlow()

  1079. 

  1080.         QMainWindow.timerEvent(self, event)

  1081. 

  1082.     def closeEvent(self, event):

  1083.         if self.fIdleTimerFast != 0:

  1084.             self.killTimer(self.fIdleTimerFast)

  1085.             self.fIdleTimerFast = 0

  1086. 

  1087.         if self.fIdleTimerSlow != 0:

  1088.             self.killTimer(self.fIdleTimerSlow)

  1089.             self.fIdleTimerSlow = 0

  1090. 

  1091.         self.saveSettings()

  1092. 

  1093.         if Carla.host.is_engine_running():

  1094.             Carla.host.set_engine_about_to_close()

  1095.             self.ui.act_plugin_remove_all.setEnabled(False)

  1096.             self.fContainer.removeAllPlugins()

  1097.             self.stopEngine()

  1098. 

  1099.         QMainWindow.closeEvent(self, event)

  1100. 

  1101. # ------------------------------------------------------------------------------------------------------------

  1102. # Engine callback

  1103. 

  1104. def engineCallback(ptr, action, pluginId, value1, value2, value3, valueStr):

  1105.     if action == ENGINE_CALLBACK_PROCESS_MODE_CHANGED:

  1106.         Carla.processMode = value1

  1107.         if Carla.gui is not None:

  1108.             Carla.gui.ProcessModeChangedCallback.emit(value1)

  1109.         return

  1110. 

  1111.     if action == ENGINE_CALLBACK_TRANSPORT_MODE_CHANGED:

  1112.         Carla.transportMode = value1

  1113.         if Carla.gui is not None:

  1114.             Carla.gui.TransportModeChangedCallback.emit(value1)

  1115.         return

  1116. 

  1117.     if action == ENGINE_CALLBACK_BUFFER_SIZE_CHANGED:

  1118.         Carla.bufferSize = value1

  1119.         if Carla.gui is not None:

  1120.             Carla.gui.BufferSizeChangedCallback.emit(value1)

  1121.         return

  1122. 

  1123.     if action == ENGINE_CALLBACK_SAMPLE_RATE_CHANGED:

  1124.         Carla.sampleRate = value1

  1125.         if Carla.gui is not None:

  1126.             Carla.gui.SampleRateChangedCallback.emit(value3)

  1127.         return

  1128. 

  1129.     if Carla.gui is None:

  1130.         print("WARNING: Got engine callback but UI is not ready : ", pluginId, value1, value2, value3, valueStr)

  1131.         return

  1132. 

  1133.     valueStr = charPtrToString(valueStr)

  1134. 

  1135.     if action == ENGINE_CALLBACK_DEBUG:

  1136.         Carla.gui.DebugCallback.emit(pluginId, value1, value2, value3, valueStr)

  1137.     elif action == ENGINE_CALLBACK_PLUGIN_ADDED:

  1138.         Carla.gui.PluginAddedCallback.emit(pluginId, valueStr)

  1139.     elif action == ENGINE_CALLBACK_PLUGIN_REMOVED:

  1140.         Carla.gui.PluginRemovedCallback.emit(pluginId)

  1141.     elif action == ENGINE_CALLBACK_PLUGIN_RENAMED:

  1142.         Carla.gui.PluginRenamedCallback.emit(pluginId, valueStr)

  1143.     elif action == ENGINE_CALLBACK_PLUGIN_UNAVAILABLE:

  1144.         Carla.gui.PluginUnavailableCallback.emit(pluginId, valueStr)

  1145.     elif action == ENGINE_CALLBACK_PARAMETER_VALUE_CHANGED:

  1146.         Carla.gui.ParameterValueChangedCallback.emit(pluginId, value1, value3)

  1147.     elif action == ENGINE_CALLBACK_PARAMETER_DEFAULT_CHANGED:

  1148.         Carla.gui.ParameterDefaultChangedCallback.emit(pluginId, value1, value3)

  1149.     elif action == ENGINE_CALLBACK_PARAMETER_MIDI_CC_CHANGED:

  1150.         Carla.gui.ParameterMidiCcChangedCallback.emit(pluginId, value1, value2)

  1151.     elif action == ENGINE_CALLBACK_PARAMETER_MIDI_CHANNEL_CHANGED:

  1152.         Carla.gui.ParameterMidiChannelChangedCallback.emit(pluginId, value1, value2)

  1153.     elif action == ENGINE_CALLBACK_PROGRAM_CHANGED:

  1154.         Carla.gui.ProgramChangedCallback.emit(pluginId, value1)

  1155.     elif action == ENGINE_CALLBACK_MIDI_PROGRAM_CHANGED:

  1156.         Carla.gui.MidiProgramChangedCallback.emit(pluginId, value1)

  1157.     elif action == ENGINE_CALLBACK_UI_STATE_CHANGED:

  1158.         Carla.gui.UiStateChangedCallback.emit(pluginId, value1)

  1159.     elif action == ENGINE_CALLBACK_NOTE_ON:

  1160.         Carla.gui.NoteOnCallback.emit(pluginId, value1, value2, int(value3))

  1161.     elif action == ENGINE_CALLBACK_NOTE_OFF:

  1162.         Carla.gui.NoteOffCallback.emit(pluginId, value1, value2)

  1163.     elif action == ENGINE_CALLBACK_UPDATE:

  1164.         Carla.gui.UpdateCallback.emit(pluginId)

  1165.     elif action == ENGINE_CALLBACK_RELOAD_INFO:

  1166.         Carla.gui.ReloadInfoCallback.emit(pluginId)

  1167.     elif action == ENGINE_CALLBACK_RELOAD_PARAMETERS:

  1168.         Carla.gui.ReloadParametersCallback.emit(pluginId)

  1169.     elif action == ENGINE_CALLBACK_RELOAD_PROGRAMS:

  1170.         Carla.gui.ReloadProgramsCallback.emit(pluginId)

  1171.     elif action == ENGINE_CALLBACK_RELOAD_ALL:

  1172.         Carla.gui.ReloadAllCallback.emit(pluginId)

  1173.     elif action == ENGINE_CALLBACK_PATCHBAY_CLIENT_ADDED:

  1174.         Carla.gui.PatchbayClientAddedCallback.emit(pluginId, value1, valueStr)

  1175.     elif action == ENGINE_CALLBACK_PATCHBAY_CLIENT_REMOVED:

  1176.         Carla.gui.PatchbayClientRemovedCallback.emit(pluginId)

  1177.     elif action == ENGINE_CALLBACK_PATCHBAY_CLIENT_RENAMED:

  1178.         Carla.gui.PatchbayClientRenamedCallback.emit(pluginId, valueStr)

  1179.     elif action == ENGINE_CALLBACK_PATCHBAY_CLIENT_ICON_CHANGED:

  1180.         Carla.gui.PatchbayClientIconChangedCallback.emit(pluginId, value1)

  1181.     elif action == ENGINE_CALLBACK_PATCHBAY_PORT_ADDED:

  1182.         Carla.gui.PatchbayPortAddedCallback.emit(pluginId, value1, value2, valueStr)

  1183.     elif action == ENGINE_CALLBACK_PATCHBAY_PORT_REMOVED:

  1184.         Carla.gui.PatchbayPortRemovedCallback.emit(pluginId, value1)

  1185.     elif action == ENGINE_CALLBACK_PATCHBAY_PORT_RENAMED:

  1186.         Carla.gui.PatchbayPortRenamedCallback.emit(pluginId, value1, valueStr)

  1187.     elif action == ENGINE_CALLBACK_PATCHBAY_CONNECTION_ADDED:

  1188.         Carla.gui.PatchbayConnectionAddedCallback.emit(pluginId, value1, value2)

  1189.     elif action == ENGINE_CALLBACK_PATCHBAY_CONNECTION_REMOVED:

  1190.         Carla.gui.PatchbayConnectionRemovedCallback.emit(pluginId, value1, value2)

  1191.     elif action == ENGINE_CALLBACK_ENGINE_STARTED:

  1192.         Carla.gui.EngineStartedCallback.emit(value1, value2, valueStr)

  1193.     elif action == ENGINE_CALLBACK_ENGINE_STOPPED:

  1194.         Carla.gui.EngineStoppedCallback.emit()

  1195.     elif action == ENGINE_CALLBACK_INFO:

  1196.         Carla.gui.InfoCallback.emit(valueStr)

  1197.     elif action == ENGINE_CALLBACK_ERROR:

  1198.         Carla.gui.ErrorCallback.emit(valueStr)

  1199.     elif action == ENGINE_CALLBACK_QUIT:

  1200.         Carla.gui.QuitCallback.emit()