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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 projectLoaded(self):

  98.         pass

  99. 

  100.     def saveSettings(self, settings):

  101.         pass

  102. 

  103.     def showEditDialog(self, pluginId):

  104.         pass

  105. 

  106. # ------------------------------------------------------------------------------------------------------------

  107. # Host Window

  108. 

  109. class HostWindow(QMainWindow):

  110.     # signals

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

  112.     PluginAddedCallback = pyqtSignal(int, str)

  113.     PluginRemovedCallback = pyqtSignal(int)

  114.     PluginRenamedCallback = pyqtSignal(int, str)

  115.     PluginUnavailableCallback = pyqtSignal(int, str)

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

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

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

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

  120.     ProgramChangedCallback = pyqtSignal(int, int)

  121.     MidiProgramChangedCallback = pyqtSignal(int, int)

  122.     UiStateChangedCallback = pyqtSignal(int, int)

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

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

  125.     UpdateCallback = pyqtSignal(int)

  126.     ReloadInfoCallback = pyqtSignal(int)

  127.     ReloadParametersCallback = pyqtSignal(int)

  128.     ReloadProgramsCallback = pyqtSignal(int)

  129.     ReloadAllCallback = pyqtSignal(int)

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

  131.     PatchbayClientRemovedCallback = pyqtSignal(int)

  132.     PatchbayClientRenamedCallback = pyqtSignal(int, str)

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

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

  135.     PatchbayPortRemovedCallback = pyqtSignal(int, int)

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

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

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

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

  140.     EngineStoppedCallback = pyqtSignal()

  141.     ProcessModeChangedCallback = pyqtSignal(int)

  142.     TransportModeChangedCallback = pyqtSignal(int)

  143.     BufferSizeChangedCallback = pyqtSignal(int)

  144.     SampleRateChangedCallback = pyqtSignal(float)

  145.     InfoCallback = pyqtSignal(str)

  146.     ErrorCallback = pyqtSignal(str)

  147.     QuitCallback = pyqtSignal()

  148.     SIGTERM = pyqtSignal()

  149.     SIGUSR1 = pyqtSignal()

  150. 

  151.     def __init__(self, parent):

  152.         QMainWindow.__init__(self, parent)

  153.         self.ui = ui_carla_host.Ui_CarlaHostW()

  154.         self.ui.setupUi(self)

  155. 

  156.         if False:

  157.             Carla.gui = self

  158.             self.fContainer = CarlaDummyW(self)

  159. 

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

  161.         # Set callback, TODO put somewhere else

  162. 

  163.         if Carla.host is not None:

  164.             Carla.host.set_engine_callback(engineCallback)

  165. 

  166.         # -------------------------------------------------------------

  167.         # Internal stuff

  168. 

  169.         self.fIdleTimerFast = 0

  170.         self.fIdleTimerSlow = 0

  171. 

  172.         self.fIsProjectLoading = False

  173.         self.fProjectFilename  = ""

  174. 

  175.         self.fLadspaRdfNeedsUpdate = True

  176.         self.fLadspaRdfList = []

  177. 

  178.         self.fLastTransportFrame = 0

  179.         self.fLastTransportState = False

  180.         self.fTransportText = ""

  181. 

  182.         # when true, call engineChanged() asap

  183.         self.fEngineChanged = False

  184. 

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

  186.         self.fFirstEngineInit = True

  187. 

  188.         self.fSavedSettings = {}

  189. 

  190.         if LADISH_APP_NAME:

  191.             self.fClientName         = LADISH_APP_NAME

  192.             self.fSessionManagerName = "LADISH"

  193.         elif NSM_URL:

  194.             self.fClientName         = "Carla.tmp"

  195.             self.fSessionManagerName = "Non Session Manager"

  196.         else:

  197.             self.fClientName         = "Carla"

  198.             self.fSessionManagerName = ""

  199. 

  200.         # -------------------------------------------------------------

  201.         # Load Settings

  202. 

  203.         self.loadSettings(True)

  204. 

  205.         # -------------------------------------------------------------

  206.         # Set up GUI (engine stopped)

  207. 

  208.         if Carla.isPlugin:

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

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

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

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

  213.         else:

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

  215. 

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

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

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

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

  220. 

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

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

  223. 

  224.         self.setTransportMenuEnabled(False)

  225. 

  226.         # -------------------------------------------------------------

  227.         # Set up GUI (right panel)

  228. 

  229.         self.fDirModel = QFileSystemModel(self)

  230.         self.fDirModel.setRootPath(HOME)

  231. 

  232.         if Carla.host is not None:

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

  234. 

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

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

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

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

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

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

  241. 

  242.         self.setProperWindowTitle()

  243. 

  244.         # -------------------------------------------------------------

  245.         # Connect actions to functions

  246. 

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

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

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

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

  251. 

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

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

  254. 

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

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

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

  258. 

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

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

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

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

  263. 

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

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

  266. 

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

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

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

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

  271. 

  272.         self.DebugCallback.connect(self.slot_handleDebugCallback)

  273. 

  274.         self.PluginAddedCallback.connect(self.slot_handlePluginAddedCallback)

  275.         self.PluginRemovedCallback.connect(self.slot_handlePluginRemovedCallback)

  276.         self.PluginRenamedCallback.connect(self.slot_handlePluginRenamedCallback)

  277.         self.PluginUnavailableCallback.connect(self.slot_handlePluginUnavailableCallback)

  278. 

  279.         # parameter (rack, patchbay)

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

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

  282.         # update, reload (rack, patchbay)

  283.         # patchbay

  284. 

  285.         self.EngineStartedCallback.connect(self.slot_handleEngineStartedCallback)

  286.         self.EngineStoppedCallback.connect(self.slot_handleEngineStoppedCallback)

  287. 

  288.         self.ProcessModeChangedCallback.connect(self.slot_handleProcessModeChangedCallback)

  289.         self.TransportModeChangedCallback.connect(self.slot_handleTransportModeChangedCallback)

  290. 

  291.         self.BufferSizeChangedCallback.connect(self.slot_handleBufferSizeChangedCallback)

  292.         self.SampleRateChangedCallback.connect(self.slot_handleSampleRateChangedCallback)

  293. 

  294.         self.InfoCallback.connect(self.slot_handleInfoCallback)

  295.         self.ErrorCallback.connect(self.slot_handleErrorCallback)

  296.         self.QuitCallback.connect(self.slot_handleQuitCallback)

  297. 

  298.         self.SIGUSR1.connect(self.slot_handleSIGUSR1)

  299.         self.SIGTERM.connect(self.slot_handleSIGTERM)

  300. 

  301.         # -------------------------------------------------------------

  302.         # Final setup

  303. 

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

  305. 

  306.     # -----------------------------------------------------------------

  307.     # Called by containers

  308. 

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

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

  311.         return dialog.exec_()

  312. 

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

  314.         if showMiniCanvas:

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

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

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

  318.         else:

  319.             self.ui.miniCanvasPreview.hide()

  320. 

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

  322. 

  323.     def updateContainer(self, canvasThemeData):

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

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

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

  327. 

  328.     # -----------------------------------------------------------------

  329.     # Internal stuff (files)

  330. 

  331.     def loadProjectNow(self):

  332.         if not self.fProjectFilename:

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

  334. 

  335.         self.fIsProjectLoading = True

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

  337.         self.fIsProjectLoading = False

  338. 

  339.         self.fContainer.projectLoaded()

  340. 

  341.     @pyqtSlot()

  342.     def slot_loadProjectNow(self):

  343.         self.loadProjectNow()

  344. 

  345.     def loadProjectLater(self, filename):

  346.         self.fProjectFilename = filename

  347.         self.setProperWindowTitle()

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

  349. 

  350.     def saveProjectNow(self):

  351.         if not self.fProjectFilename:

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

  353. 

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

  355. 

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

  357.     # Internal stuff (engine)

  358. 

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

  360.         if Carla.isPlugin:

  361.             return "Plugin"

  362. 

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

  364. 

  365.         # -------------------------------------------------------------

  366.         # read settings

  367. 

  368.         # bool values

  369.         try:

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

  371.         except:

  372.             forceStereo = CARLA_DEFAULT_FORCE_STEREO

  373. 

  374.         try:

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

  376.         except:

  377.             preferPluginBridges = CARLA_DEFAULT_PREFER_PLUGIN_BRIDGES

  378. 

  379.         try:

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

  381.         except:

  382.             preferUiBridges = CARLA_DEFAULT_PREFER_UI_BRIDGES

  383. 

  384.         try:

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

  386.         except:

  387.             uisAlwaysOnTop = CARLA_DEFAULT_UIS_ALWAYS_ON_TOP

  388. 

  389.         # int values

  390.         try:

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

  392.         except:

  393.             maxParameters = CARLA_DEFAULT_MAX_PARAMETERS

  394. 

  395.         try:

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

  397.         except:

  398.             uiBridgesTimeout = CARLA_DEFAULT_UI_BRIDGES_TIMEOUT

  399. 

  400.         # enums

  401.         try:

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

  403.         except:

  404.             processMode = CARLA_DEFAULT_PROCESS_MODE

  405. 

  406.         try:

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

  408.         except:

  409.             transportMode = CARLA_DEFAULT_TRANSPORT_MODE

  410. 

  411.         # driver name

  412.         try:

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

  414.         except:

  415.             audioDriver = CARLA_DEFAULT_AUDIO_DRIVER

  416. 

  417.         # driver options

  418.         try:

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

  420.         except:

  421.             audioDevice = ""

  422. 

  423.         try:

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

  425.         except:

  426.             audioNumPeriods = CARLA_DEFAULT_AUDIO_NUM_PERIODS

  427. 

  428.         try:

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

  430.         except:

  431.             audioBufferSize = CARLA_DEFAULT_AUDIO_BUFFER_SIZE

  432. 

  433.         try:

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

  435.         except:

  436.             audioSampleRate = CARLA_DEFAULT_AUDIO_SAMPLE_RATE

  437. 

  438.         # -------------------------------------------------------------

  439.         # fix things if needed

  440. 

  441.         if processMode == ENGINE_PROCESS_MODE_CONTINUOUS_RACK:

  442.             forceStereo = True

  443.         elif processMode == ENGINE_PROCESS_MODE_MULTIPLE_CLIENTS and LADISH_APP_NAME:

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

  445.             processMode = ENGINE_PROCESS_MODE_SINGLE_CLIENT

  446. 

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

  448.             transportMode = ENGINE_TRANSPORT_MODE_INTERNAL

  449. 

  450.         # -------------------------------------------------------------

  451.         # apply to engine

  452. 

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

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

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

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

  457. 

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

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

  460. 

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

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

  463. 

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

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

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

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

  468. 

  469.         # save this for later

  470.         Carla.maxParameters = maxParameters

  471. 

  472.         # return selected driver name

  473.         return audioDriver

  474. 

  475.     def startEngine(self):

  476.         audioDriver = self.setEngineSettings()

  477. 

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

  479.             if self.fFirstEngineInit:

  480.                 self.fFirstEngineInit = False

  481.                 return

  482. 

  483.             audioError = Carla.host.get_last_error()

  484. 

  485.             if audioError:

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

  487.             else:

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

  489.             return

  490. 

  491.         self.fFirstEngineInit = False

  492. 

  493.     def stopEngine(self):

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

  495.             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"

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

  497.                                                                          QMessageBox.Yes | QMessageBox.No, QMessageBox.No)

  498.             if ask != QMessageBox.Yes:

  499.                 return

  500. 

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

  502.             self.fContainer.removeAllPlugins()

  503. 

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

  505.             print(Carla.host.get_last_error())

  506. 

  507.     # -----------------------------------------------------------------

  508.     # Internal stuff (plugins)

  509. 

  510.     def getExtraPtr(self, plugin):

  511.         ptype = plugin['type']

  512. 

  513.         if ptype == PLUGIN_LADSPA:

  514.             uniqueId = plugin['uniqueId']

  515. 

  516.             self.maybeLoadRDFs()

  517. 

  518.             for rdfItem in self.fLadspaRdfList:

  519.                 if rdfItem.UniqueID == uniqueId:

  520.                     return pointer(rdfItem)

  521. 

  522.         elif ptype in (PLUGIN_FILE_GIG, PLUGIN_FILE_SF2):

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

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

  525. 

  526.         return None

  527. 

  528.     def maybeLoadRDFs(self):

  529.         if not self.fLadspaRdfNeedsUpdate:

  530.             return

  531. 

  532.         self.fLadspaRdfNeedsUpdate = False

  533.         self.fLadspaRdfList = []

  534. 

  535.         if not haveLRDF:

  536.             return

  537. 

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

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

  540. 

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

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

  543. 

  544.             try:

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

  546.             except:

  547.                 pass

  548. 

  549.             frLadspa.close()

  550. 

  551.     def setLoadRDFsNeeded(self):

  552.         self.fLadspaRdfNeedsUpdate = True

  553. 

  554.     # -----------------------------------------------------------------

  555.     # Internal stuff (transport)

  556. 

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

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

  559.             return

  560. 

  561.         timeInfo = Carla.host.get_transport_info()

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

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

  564. 

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

  566.             if playing:

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

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

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

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

  571.             else:

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

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

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

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

  576. 

  577.             self.fLastTransportState = playing

  578. 

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

  580.             time = frame / Carla.sampleRate

  581.             secs = time % 60

  582.             mins = (time / 60) % 60

  583.             hrs  = (time / 3600) % 60

  584. 

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

  586.             self.fLastTransportFrame = frame

  587. 

  588.     def setTransportMenuEnabled(self, enabled):

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

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

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

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

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

  594. 

  595.     # -----------------------------------------------------------------

  596.     # Internal stuff (settings)

  597. 

  598.     def loadSettings(self, firstTime):

  599.         settings = QSettings()

  600. 

  601.         if firstTime:

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

  603. 

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

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

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

  607. 

  608.             if settings.contains("SplitterState"):

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

  610.             else:

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

  612. 

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

  614. 

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

  616. 

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

  618.                 if i == 0: continue

  619.                 folder = diskFolders[i]

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

  621. 

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

  623.                 self.setUnifiedTitleAndToolBarOnMac(True)

  624. 

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

  626.         # plugin checks

  627. 

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

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

  630. 

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

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

  633. 

  634.         # ---------------------------------------------

  635. 

  636.         if not Carla.isPlugin:

  637.             # engine

  638.             self.setEngineSettings(settings)

  639. 

  640.             # plugin paths

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

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

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

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

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

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

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

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

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

  650. 

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

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

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

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

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

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

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

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

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

  660. 

  661.         # ---------------------------------------------

  662. 

  663.         # TODO

  664. 

  665.         self.fSavedSettings = {

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

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

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

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

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

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

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

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

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

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

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

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

  678.         }

  679. 

  680.         # ---------------------------------------------

  681. 

  682.         if self.fIdleTimerFast != 0:

  683.             self.killTimer(self.fIdleTimerFast)

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

  685. 

  686.         if self.fIdleTimerSlow != 0:

  687.             self.killTimer(self.fIdleTimerSlow)

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

  689. 

  690.     def saveSettings(self):

  691.         settings = QSettings()

  692. 

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

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

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

  696. 

  697.         diskFolders = []

  698. 

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

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

  701. 

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

  703. 

  704.         self.fContainer.saveSettings(settings)

  705. 

  706.     # -----------------------------------------------------------------

  707.     # Internal stuff (gui)

  708. 

  709.     def setProperWindowTitle(self):

  710.         title = self.fClientName

  711. 

  712.         if self.fProjectFilename:

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

  714.         if self.fSessionManagerName:

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

  716. 

  717.         self.setWindowTitle(title)

  718. 

  719.     # -----------------------------------------------------------------

  720. 

  721.     @pyqtSlot()

  722.     def slot_fileNew(self):

  723.         self.fContainer.removeAllPlugins()

  724.         self.fProjectFilename = ""

  725.         self.setProperWindowTitle()

  726. 

  727.     @pyqtSlot()

  728.     def slot_fileOpen(self):

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

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

  731. 

  732.         if not filenameTry:

  733.             return

  734.         filename = filenameTry if isinstance(filenameTry, str) else filenameTry[0]

  735. 

  736.         newFile = True

  737. 

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

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

  740.                                                                           QMessageBox.Yes | QMessageBox.No, QMessageBox.No)

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

  742. 

  743.         if newFile:

  744.             self.fContainer.removeAllPlugins()

  745.             self.fProjectFilename = filename

  746.             self.setProperWindowTitle()

  747.             self.loadProjectNow()

  748.         else:

  749.             filenameOld = self.fProjectFilename

  750.             self.fProjectFilename = filename

  751.             self.loadProjectNow()

  752.             self.fProjectFilename = filenameOld

  753. 

  754.     @pyqtSlot()

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

  756.         if self.fProjectFilename and not saveAs:

  757.             return self.saveProjectNow()

  758. 

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

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

  761. 

  762.         if not filenameTry:

  763.             return

  764.         filename = filenameTry if isinstance(filenameTry, str) else filenameTry[0]

  765. 

  766.         if not filename.endswith(".carxp"):

  767.             filename += ".carxp"

  768. 

  769.         if self.fProjectFilename != filename:

  770.             self.fProjectFilename = filename

  771.             self.setProperWindowTitle()

  772. 

  773.         self.saveProjectNow()

  774. 

  775.     @pyqtSlot()

  776.     def slot_fileSaveAs(self):

  777.         self.slot_fileSave(True)

  778. 

  779.     # -----------------------------------------------------------------

  780. 

  781.     @pyqtSlot()

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

  783.         if doStart: self.startEngine()

  784. 

  785.         check = Carla.host.is_engine_running()

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

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

  788. 

  789.         if not Carla.isPlugin:

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

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

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

  793. 

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

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

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

  797. 

  798.             self.setTransportMenuEnabled(check)

  799. 

  800.         if check:

  801.             if not Carla.isPlugin:

  802.                 self.refreshTransport(True)

  803. 

  804.             self.fContainer.engineStarted()

  805. 

  806.     @pyqtSlot()

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

  808.         if doStop: self.stopEngine()

  809. 

  810.         # FIXME?

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

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

  813.             self.fContainer.removeAllPlugins()

  814. 

  815.         check = Carla.host.is_engine_running()

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

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

  818. 

  819.         if not Carla.isPlugin:

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

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

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

  823. 

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

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

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

  827. 

  828.             self.setTransportMenuEnabled(check)

  829. 

  830.         if not check:

  831.             self.fTextTransport = ""

  832.             self.fContainer.engineStopped()

  833. 

  834.     # -----------------------------------------------------------------

  835. 

  836.     @pyqtSlot()

  837.     def slot_pluginAdd(self):

  838.         dialog = PluginDatabaseW(self)

  839. 

  840.         if not dialog.exec_():

  841.             return

  842. 

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

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

  845.             return

  846. 

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

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

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

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

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

  852. 

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

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

  855.             return

  856. 

  857.     @pyqtSlot()

  858.     def slot_pluginRemoveAll(self):

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

  860.         self.fContainer.removeAllPlugins()

  861.         Carla.host.remove_all_plugins()

  862. 

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

  864. 

  865.     @pyqtSlot(bool)

  866.     def slot_transportPlayPause(self, toggled):

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

  868.             return

  869. 

  870.         if toggled:

  871.             Carla.host.transport_play()

  872.         else:

  873.             Carla.host.transport_pause()

  874. 

  875.         self.refreshTransport()

  876. 

  877.     @pyqtSlot()

  878.     def slot_transportStop(self):

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

  880.             return

  881. 

  882.         Carla.host.transport_pause()

  883.         Carla.host.transport_relocate(0)

  884. 

  885.         self.refreshTransport()

  886. 

  887.     @pyqtSlot()

  888.     def slot_transportBackwards(self):

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

  890.             return

  891. 

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

  893. 

  894.         if newFrame < 0:

  895.             newFrame = 0

  896. 

  897.         Carla.host.transport_relocate(newFrame)

  898. 

  899.     @pyqtSlot()

  900.     def slot_transportForwards(self):

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

  902.             return

  903. 

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

  905.         Carla.host.transport_relocate(newFrame)

  906. 

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

  908. 

  909.     @pyqtSlot()

  910.     def slot_aboutCarla(self):

  911.         CarlaAboutW(self).exec_()

  912. 

  913.     @pyqtSlot()

  914.     def slot_aboutQt(self):

  915.         QApplication.instance().aboutQt()

  916. 

  917.     # -----------------------------------------------------------------

  918. 

  919.     @pyqtSlot(int)

  920.     def slot_diskFolderChanged(self, index):

  921.         if index < 0:

  922.             return

  923.         elif index == 0:

  924.             filename = HOME

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

  926.         else:

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

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

  929. 

  930.         self.fDirModel.setRootPath(filename)

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

  932. 

  933.     @pyqtSlot()

  934.     def slot_diskFolderAdd(self):

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

  936. 

  937.         if newPath:

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

  939.                 newPath = newPath[:-1]

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

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

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

  943. 

  944.     @pyqtSlot()

  945.     def slot_diskFolderRemove(self):

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

  947. 

  948.         if index <= 0:

  949.             return

  950. 

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

  952. 

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

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

  955. 

  956.     @pyqtSlot(QModelIndex)

  957.     def slot_fileTreeDoubleClicked(self, modelIndex):

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

  959. 

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

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

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

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

  964. 

  965.     # -----------------------------------------------------------------

  966. 

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

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

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

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

  971. 

  972.     # -----------------------------------------------------------------

  973. 

  974.     @pyqtSlot(int, str)

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

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

  977. 

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

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

  980. 

  981.     @pyqtSlot(int)

  982.     def slot_handlePluginRemovedCallback(self, pluginId):

  983.         self.fContainer.removePlugin(pluginId)

  984. 

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

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

  987. 

  988.     @pyqtSlot(int, str)

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

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

  991. 

  992.     @pyqtSlot(int, str)

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

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

  995. 

  996.     # -----------------------------------------------------------------

  997. 

  998.     @pyqtSlot(str)

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

  1000.         Carla.processMode   = processMode

  1001.         Carla.transportMode = transportMode

  1002.         Carla.bufferSize    = Carla.host.get_buffer_size()

  1003.         Carla.sampleRate    = Carla.host.get_sample_rate()

  1004. 

  1005.         self.slot_engineStart(False)

  1006. 

  1007.         if self.fIdleTimerFast == 0:

  1008.             self.fIdleTimerFast = self.startTimer(self.fSavedSettings[CARLA_KEY_MAIN_REFRESH_INTERVAL])

  1009.         if self.fIdleTimerSlow == 0:

  1010.             self.fIdleTimerSlow = self.startTimer(self.fSavedSettings[CARLA_KEY_MAIN_REFRESH_INTERVAL]*2)

  1011. 

  1012.     @pyqtSlot()

  1013.     def slot_handleEngineStoppedCallback(self):

  1014.         if self.fIdleTimerFast != 0:

  1015.             self.killTimer(self.fIdleTimerFast)

  1016.             self.fIdleTimerFast = 0

  1017. 

  1018.         if self.fIdleTimerSlow != 0:

  1019.             self.killTimer(self.fIdleTimerSlow)

  1020.             self.fIdleTimerSlow = 0

  1021. 

  1022.         self.slot_engineStop(False)

  1023. 

  1024.         Carla.bufferSize = 0

  1025.         Carla.sampleRate = 0.0

  1026. 

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

  1028. 

  1029.     @pyqtSlot(int)

  1030.     def slot_handleProcessModeChangedCallback(self, newProcessMode):

  1031.         self.fEngineChanged = True

  1032. 

  1033.     @pyqtSlot(int)

  1034.     def slot_handleTransportModeChangedCallback(self, newTransportMode):

  1035.         self.fEngineChanged = True

  1036. 

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

  1038. 

  1039.     @pyqtSlot(int)

  1040.     def slot_handleBufferSizeChangedCallback(self, newBufferSize):

  1041.         self.fEngineChanged = True

  1042. 

  1043.     @pyqtSlot(float)

  1044.     def slot_handleSampleRateChangedCallback(self, newSampleRate):

  1045.         self.fEngineChanged = True

  1046. 

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

  1048. 

  1049.     @pyqtSlot(str)

  1050.     def slot_handleInfoCallback(self, info):

  1051.         pass

  1052. 

  1053.     @pyqtSlot(str)

  1054.     def slot_handleErrorCallback(self, error):

  1055.         pass

  1056. 

  1057.     @pyqtSlot()

  1058.     def slot_handleQuitCallback(self):

  1059.         pass

  1060. 

  1061.     # -----------------------------------------------------------------

  1062. 

  1063.     @pyqtSlot()

  1064.     def slot_handleSIGUSR1(self):

  1065.         print("Got SIGUSR1 -> Saving project now")

  1066.         QTimer.singleShot(0, self.slot_fileSave)

  1067. 

  1068.     @pyqtSlot()

  1069.     def slot_handleSIGTERM(self):

  1070.         print("Got SIGTERM -> Closing now")

  1071.         self.close()

  1072. 

  1073.     # -----------------------------------------------------------------

  1074. 

  1075.     def timerEvent(self, event):

  1076.         if event.timerId() == self.fIdleTimerFast:

  1077.             #if not Carla.isPlugin:

  1078.             Carla.host.engine_idle()

  1079.             self.refreshTransport()

  1080. 

  1081.             self.fContainer.idleFast()

  1082. 

  1083.         elif event.timerId() == self.fIdleTimerSlow:

  1084.             if self.fEngineChanged:

  1085.                 self.fContainer.engineChanged()

  1086.                 self.fEngineChanged = False

  1087. 

  1088.             self.fContainer.idleSlow()

  1089. 

  1090.         QMainWindow.timerEvent(self, event)

  1091. 

  1092.     def closeEvent(self, event):

  1093.         if self.fIdleTimerFast != 0:

  1094.             self.killTimer(self.fIdleTimerFast)

  1095.             self.fIdleTimerFast = 0

  1096. 

  1097.         if self.fIdleTimerSlow != 0:

  1098.             self.killTimer(self.fIdleTimerSlow)

  1099.             self.fIdleTimerSlow = 0

  1100. 

  1101.         self.saveSettings()

  1102. 

  1103.         if Carla.host.is_engine_running():

  1104.             Carla.host.set_engine_about_to_close()

  1105.             self.ui.act_plugin_remove_all.setEnabled(False)

  1106.             self.fContainer.removeAllPlugins()

  1107.             self.stopEngine()

  1108. 

  1109.         QMainWindow.closeEvent(self, event)

  1110. 

  1111. # ------------------------------------------------------------------------------------------------------------

  1112. # Engine callback

  1113. 

  1114. def engineCallback(ptr, action, pluginId, value1, value2, value3, valueStr):

  1115.     if action == ENGINE_CALLBACK_PROCESS_MODE_CHANGED:

  1116.         Carla.processMode = value1

  1117.         if Carla.gui is not None:

  1118.             Carla.gui.ProcessModeChangedCallback.emit(value1)

  1119.         return

  1120. 

  1121.     if action == ENGINE_CALLBACK_TRANSPORT_MODE_CHANGED:

  1122.         Carla.transportMode = value1

  1123.         if Carla.gui is not None:

  1124.             Carla.gui.TransportModeChangedCallback.emit(value1)

  1125.         return

  1126. 

  1127.     if action == ENGINE_CALLBACK_BUFFER_SIZE_CHANGED:

  1128.         Carla.bufferSize = value1

  1129.         if Carla.gui is not None:

  1130.             Carla.gui.BufferSizeChangedCallback.emit(value1)

  1131.         return

  1132. 

  1133.     if action == ENGINE_CALLBACK_SAMPLE_RATE_CHANGED:

  1134.         Carla.sampleRate = value1

  1135.         if Carla.gui is not None:

  1136.             Carla.gui.SampleRateChangedCallback.emit(value3)

  1137.         return

  1138. 

  1139.     if Carla.gui is None:

  1140.         print("WARNING: Got engine callback but UI is not ready : ", pluginId, value1, value2, value3, valueStr)

  1141.         return

  1142. 

  1143.     valueStr = charPtrToString(valueStr)

  1144. 

  1145.     if action == ENGINE_CALLBACK_DEBUG:

  1146.         Carla.gui.DebugCallback.emit(pluginId, value1, value2, value3, valueStr)

  1147.     elif action == ENGINE_CALLBACK_PLUGIN_ADDED:

  1148.         Carla.gui.PluginAddedCallback.emit(pluginId, valueStr)

  1149.     elif action == ENGINE_CALLBACK_PLUGIN_REMOVED:

  1150.         Carla.gui.PluginRemovedCallback.emit(pluginId)

  1151.     elif action == ENGINE_CALLBACK_PLUGIN_RENAMED:

  1152.         Carla.gui.PluginRenamedCallback.emit(pluginId, valueStr)

  1153.     elif action == ENGINE_CALLBACK_PLUGIN_UNAVAILABLE:

  1154.         Carla.gui.PluginUnavailableCallback.emit(pluginId, valueStr)

  1155.     elif action == ENGINE_CALLBACK_PARAMETER_VALUE_CHANGED:

  1156.         Carla.gui.ParameterValueChangedCallback.emit(pluginId, value1, value3)

  1157.     elif action == ENGINE_CALLBACK_PARAMETER_DEFAULT_CHANGED:

  1158.         Carla.gui.ParameterDefaultChangedCallback.emit(pluginId, value1, value3)

  1159.     elif action == ENGINE_CALLBACK_PARAMETER_MIDI_CC_CHANGED:

  1160.         Carla.gui.ParameterMidiCcChangedCallback.emit(pluginId, value1, value2)

  1161.     elif action == ENGINE_CALLBACK_PARAMETER_MIDI_CHANNEL_CHANGED:

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

  1163.     elif action == ENGINE_CALLBACK_PROGRAM_CHANGED:

  1164.         Carla.gui.ProgramChangedCallback.emit(pluginId, value1)

  1165.     elif action == ENGINE_CALLBACK_MIDI_PROGRAM_CHANGED:

  1166.         Carla.gui.MidiProgramChangedCallback.emit(pluginId, value1)

  1167.     elif action == ENGINE_CALLBACK_UI_STATE_CHANGED:

  1168.         Carla.gui.UiStateChangedCallback.emit(pluginId, value1)

  1169.     elif action == ENGINE_CALLBACK_NOTE_ON:

  1170.         Carla.gui.NoteOnCallback.emit(pluginId, value1, value2, int(value3))

  1171.     elif action == ENGINE_CALLBACK_NOTE_OFF:

  1172.         Carla.gui.NoteOffCallback.emit(pluginId, value1, value2)

  1173.     elif action == ENGINE_CALLBACK_UPDATE:

  1174.         Carla.gui.UpdateCallback.emit(pluginId)

  1175.     elif action == ENGINE_CALLBACK_RELOAD_INFO:

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

  1177.     elif action == ENGINE_CALLBACK_RELOAD_PARAMETERS:

  1178.         Carla.gui.ReloadParametersCallback.emit(pluginId)

  1179.     elif action == ENGINE_CALLBACK_RELOAD_PROGRAMS:

  1180.         Carla.gui.ReloadProgramsCallback.emit(pluginId)

  1181.     elif action == ENGINE_CALLBACK_RELOAD_ALL:

  1182.         Carla.gui.ReloadAllCallback.emit(pluginId)

  1183.     elif action == ENGINE_CALLBACK_PATCHBAY_CLIENT_ADDED:

  1184.         Carla.gui.PatchbayClientAddedCallback.emit(pluginId, value1, value2, valueStr)

  1185.     elif action == ENGINE_CALLBACK_PATCHBAY_CLIENT_REMOVED:

  1186.         Carla.gui.PatchbayClientRemovedCallback.emit(pluginId)

  1187.     elif action == ENGINE_CALLBACK_PATCHBAY_CLIENT_RENAMED:

  1188.         Carla.gui.PatchbayClientRenamedCallback.emit(pluginId, valueStr)

  1189.     elif action == ENGINE_CALLBACK_PATCHBAY_CLIENT_DATA_CHANGED:

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

  1191.     elif action == ENGINE_CALLBACK_PATCHBAY_PORT_ADDED:

  1192.         Carla.gui.PatchbayPortAddedCallback.emit(pluginId, value1, value2, valueStr)

  1193.     elif action == ENGINE_CALLBACK_PATCHBAY_PORT_REMOVED:

  1194.         Carla.gui.PatchbayPortRemovedCallback.emit(pluginId, value1)

  1195.     elif action == ENGINE_CALLBACK_PATCHBAY_PORT_RENAMED:

  1196.         Carla.gui.PatchbayPortRenamedCallback.emit(pluginId, value1, valueStr)

  1197.     elif action == ENGINE_CALLBACK_PATCHBAY_CONNECTION_ADDED:

  1198.         Carla.gui.PatchbayConnectionAddedCallback.emit(pluginId, value1, value2)

  1199.     elif action == ENGINE_CALLBACK_PATCHBAY_CONNECTION_REMOVED:

  1200.         Carla.gui.PatchbayConnectionRemovedCallback.emit(pluginId, value1, value2)

  1201.     elif action == ENGINE_CALLBACK_ENGINE_STARTED:

  1202.         Carla.gui.EngineStartedCallback.emit(value1, value2, valueStr)

  1203.     elif action == ENGINE_CALLBACK_ENGINE_STOPPED:

  1204.         Carla.gui.EngineStoppedCallback.emit()

  1205.     elif action == ENGINE_CALLBACK_INFO:

  1206.         Carla.gui.InfoCallback.emit(valueStr)

  1207.     elif action == ENGINE_CALLBACK_ERROR:

  1208.         Carla.gui.ErrorCallback.emit(valueStr)

  1209.     elif action == ENGINE_CALLBACK_QUIT:

  1210.         Carla.gui.QuitCallback.emit()