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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. try:

  23.     from PyQt5.QtCore import QTimer

  24.     from PyQt5.QtWidgets import QApplication, QMainWindow

  25. except:

  26.     from PyQt4.QtCore import QTimer

  27.     from PyQt4.QtGui import QApplication, QMainWindow

  28. 

  29. # ------------------------------------------------------------------------------------------------------------

  30. # Imports (Custom)

  31. 

  32. import ui_carla_host

  33. 

  34. from carla_database import *

  35. from carla_settings import *

  36. from carla_widgets import *

  37. 

  38. # ------------------------------------------------------------------------------------------------------------

  39. # PatchCanvas defines

  40. 

  41. CANVAS_ANTIALIASING_SMALL = 1

  42. CANVAS_EYECANDY_SMALL     = 1

  43. CANVAS_DEFAULT_THEME_NAME = "Modern Dark"

  44. 

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

  46. # Session Management support

  47. 

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

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

  50. 

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

  52. # Dummy widget

  53. 

  54. class CarlaDummyW(object):

  55.     def __init__(self, parent):

  56.         object.__init__(self)

  57. 

  58.     # -----------------------------------------------------------------

  59. 

  60.     def getPluginCount(self):

  61.         return 0

  62. 

  63.     # -----------------------------------------------------------------

  64. 

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

  66.         pass

  67. 

  68.     def removePlugin(self, pluginId):

  69.         pass

  70. 

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

  72.         pass

  73. 

  74.     def removeAllPlugins(self):

  75.         pass

  76. 

  77.     # -----------------------------------------------------------------

  78. 

  79.     def engineStarted(self):

  80.         pass

  81. 

  82.     def engineStopped(self):

  83.         pass

  84. 

  85.     # -----------------------------------------------------------------

  86. 

  87.     def idleFast(self):

  88.         pass

  89. 

  90.     def idleSlow(self):

  91.         pass

  92. 

  93.     # -----------------------------------------------------------------

  94. 

  95.     def saveSettings(self, settings):

  96.         pass

  97. 

  98. # ------------------------------------------------------------------------------------------------------------

  99. # Host Window

  100. 

  101. class HostWindow(QMainWindow):

  102.     # signals

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

  104.     PluginAddedCallback = pyqtSignal(int)

  105.     PluginRemovedCallback = pyqtSignal(int)

  106.     PluginRenamedCallback = pyqtSignal(int, str)

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

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

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

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

  111.     ProgramChangedCallback = pyqtSignal(int, int)

  112.     MidiProgramChangedCallback = pyqtSignal(int, int)

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

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

  115.     ShowGuiCallback = pyqtSignal(int, int)

  116.     UpdateCallback = pyqtSignal(int)

  117.     ReloadInfoCallback = pyqtSignal(int)

  118.     ReloadParametersCallback = pyqtSignal(int)

  119.     ReloadProgramsCallback = pyqtSignal(int)

  120.     ReloadAllCallback = pyqtSignal(int)

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

  122.     PatchbayClientRemovedCallback = pyqtSignal(int, str)

  123.     PatchbayClientRenamedCallback = pyqtSignal(int, str)

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

  125.     PatchbayPortRemovedCallback = pyqtSignal(int, int, str)

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

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

  128.     PatchbayConnectionRemovedCallback = pyqtSignal(int)

  129.     PatchbayIconChangedCallback = pyqtSignal(int, int)

  130.     BufferSizeChangedCallback = pyqtSignal(int)

  131.     SampleRateChangedCallback = pyqtSignal(float)

  132.     ProcessModeChangedCallback = pyqtSignal(int)

  133.     EngineStartedCallback = pyqtSignal(str)

  134.     EngineStoppedChangedCallback = pyqtSignal()

  135.     NSM_AnnounceCallback = pyqtSignal(str)

  136.     NSM_OpenCallback = pyqtSignal(str)

  137.     NSM_SaveCallback = pyqtSignal()

  138.     ErrorCallback = pyqtSignal(str)

  139.     QuitCallback = pyqtSignal()

  140.     SIGTERM = pyqtSignal()

  141.     SIGUSR1 = pyqtSignal()

  142. 

  143.     def __init__(self, parent):

  144.         QMainWindow.__init__(self, parent)

  145.         self.ui = ui_carla_host.Ui_CarlaHostW()

  146.         self.ui.setupUi(self)

  147. 

  148.         if False:

  149.             Carla.gui = self

  150.             self.fContainer = CarlaDummyW(self)

  151. 

  152.         # -------------------------------------------------------------

  153.         # Set callback

  154. 

  155.         Carla.host.set_engine_callback(EngineCallback)

  156. 

  157.         # -------------------------------------------------------------

  158.         # Internal stuff

  159. 

  160.         self.fBufferSize = 0

  161.         self.fSampleRate = 0.0

  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. 

  175.         self.fSavedSettings = {}

  176. 

  177.         if LADISH_APP_NAME:

  178.             self.fClientName         = LADISH_APP_NAME

  179.             self.fSessionManagerName = "LADISH"

  180.         elif NSM_URL:

  181.             self.fClientName         = "Carla.tmp"

  182.             self.fSessionManagerName = "Non Session Manager"

  183.         else:

  184.             self.fClientName         = "Carla"

  185.             self.fSessionManagerName = ""

  186. 

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

  188.         # Load Settings

  189. 

  190.         self.loadSettings(True)

  191. 

  192.         # -------------------------------------------------------------

  193.         # Set up GUI (engine stopped)

  194. 

  195.         if Carla.isPlugin:

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

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

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

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

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

  201.         else:

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

  203. 

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

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

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

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

  208. 

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

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

  211. 

  212.         self.setTransportMenuEnabled(False)

  213. 

  214.         self.setProperWindowTitle()

  215. 

  216.         # -------------------------------------------------------------

  217.         # Connect actions to functions

  218. 

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

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

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

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

  223. 

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

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

  226. 

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

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

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

  230. 

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

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

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

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

  235. 

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

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

  238. 

  239.         #self.ui.splitter.splitterMoved.connect(self.slot_splitterMoved)

  240. 

  241.         #self.ui.cb_disk.currentIndexChanged.connect(self.slot_diskFolderChanged)

  242.         #self.ui.b_disk_add.clicked.connect(self.slot_diskFolderAdd)

  243.         #self.ui.b_disk_remove.clicked.connect(self.slot_diskFolderRemove)

  244.         #self.ui.fileTreeView.doubleClicked.connect(self.slot_fileTreeDoubleClicked)

  245. 

  246.         self.DebugCallback.connect(self.slot_handleDebugCallback)

  247.         self.PluginAddedCallback.connect(self.slot_handlePluginAddedCallback)

  248.         self.PluginRemovedCallback.connect(self.slot_handlePluginRemovedCallback)

  249.         self.PluginRenamedCallback.connect(self.slot_handlePluginRenamedCallback)

  250.         self.BufferSizeChangedCallback.connect(self.slot_handleBufferSizeChangedCallback)

  251.         self.SampleRateChangedCallback.connect(self.slot_handleSampleRateChangedCallback)

  252.         self.EngineStartedCallback.connect(self.slot_handleEngineStartedCallback)

  253.         self.EngineStoppedChangedCallback.connect(self.slot_handleEngineStoppedCallback)

  254.         #self.NSM_AnnounceCallback.connect(self.slot_handleNSM_AnnounceCallback)

  255.         #self.NSM_OpenCallback.connect(self.slot_handleNSM_OpenCallback)

  256.         #self.NSM_SaveCallback.connect(self.slot_handleNSM_SaveCallback)

  257.         #self.ErrorCallback.connect(self.slot_handleErrorCallback)

  258.         #self.QuitCallback.connect(self.slot_handleQuitCallback)

  259. 

  260.         self.SIGUSR1.connect(self.slot_handleSIGUSR1)

  261.         self.SIGTERM.connect(self.slot_handleSIGTERM)

  262. 

  263.         # -------------------------------------------------------------

  264.         # Final setup

  265. 

  266.         if Carla.isPlugin:

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

  268.         elif NSM_URL:

  269.             Carla.host.nsm_ready()

  270. 

  271.     # -----------------------------------------------------------------

  272.     # Called by containers

  273. 

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

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

  276.         return dialog.exec_()

  277. 

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

  279.     # Internal stuff (files)

  280. 

  281.     def loadProjectNow(self):

  282.         if not self.fProjectFilename:

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

  284. 

  285.         # TESTING

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

  287.             self.slot_engineStart()

  288. 

  289.         self.fIsProjectLoading = True

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

  291.         self.fIsProjectLoading = False

  292. 

  293.     @pyqtSlot()

  294.     def slot_loadProjectNow(self):

  295.         self.loadProjectNow()

  296. 

  297.     def loadProjectLater(self, filename):

  298.         self.fProjectFilename = filename

  299.         self.setProperWindowTitle()

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

  301. 

  302.     def saveProjectNow(self):

  303.         if not self.fProjectFilename:

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

  305. 

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

  307. 

  308.     # -----------------------------------------------------------------

  309.     # Internal stuff (engine)

  310. 

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

  312.         if Carla.isPlugin:

  313.             return "Plugin"

  314. 

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

  316. 

  317.         forceStereo         = settings.value("Engine/ForceStereo",         CARLA_DEFAULT_FORCE_STEREO,          type=bool)

  318.         preferPluginBridges = settings.value("Engine/PreferPluginBridges", CARLA_DEFAULT_PREFER_PLUGIN_BRIDGES, type=bool)

  319.         preferUiBridges     = settings.value("Engine/PreferUiBridges",     CARLA_DEFAULT_PREFER_UI_BRIDGES,     type=bool)

  320.         uisAlwaysOnTop      = settings.value("Engine/OscUiTimeout",        CARLA_DEFAULT_UIS_ALWAYS_ON_TOP,     type=bool)

  321.         uiBridgesTimeout    = settings.value("Engine/OscUiTimeout",        CARLA_DEFAULT_UI_BRIDGES_TIMEOUT,    type=int)

  322. 

  323.         Carla.processMode   = settings.value("Engine/ProcessMode",         CARLA_DEFAULT_PROCESS_MODE,          type=int)

  324.         Carla.maxParameters = settings.value("Engine/MaxParameters",       CARLA_DEFAULT_MAX_PARAMETERS,        type=int)

  325. 

  326.         audioDriver         = settings.value("Engine/AudioDriver",         CARLA_DEFAULT_AUDIO_DRIVER,          type=str)

  327. 

  328.         if audioDriver == "JACK":

  329.             #transportMode  = settings.value("Engine/TransportMode",       TRANSPORT_MODE_JACK,                 type=int)

  330.             transportMode   = TRANSPORT_MODE_JACK

  331.         else:

  332.             transportMode   = TRANSPORT_MODE_INTERNAL

  333.             audioNumPeriods = settings.value("Engine/AudioBufferSize", CARLA_DEFAULT_AUDIO_NUM_PERIODS, type=int)

  334.             audioBufferSize = settings.value("Engine/AudioBufferSize", CARLA_DEFAULT_AUDIO_BUFFER_SIZE, type=int)

  335.             audioSampleRate = settings.value("Engine/AudioSampleRate", CARLA_DEFAULT_AUDIO_SAMPLE_RATE, type=int)

  336.             audioDevice     = settings.value("Engine/AudioDevice",     "",                              type=str)

  337. 

  338.             Carla.host.set_engine_option(OPTION_AUDIO_NUM_PERIODS, audioNumPeriods, "")

  339.             Carla.host.set_engine_option(OPTION_AUDIO_BUFFER_SIZE, audioBufferSize, "")

  340.             Carla.host.set_engine_option(OPTION_AUDIO_SAMPLE_RATE, audioSampleRate, "")

  341.             Carla.host.set_engine_option(OPTION_AUDIO_DEVICE,   0, audioDevice)

  342. 

  343.         if Carla.processMode == PROCESS_MODE_CONTINUOUS_RACK:

  344.             forceStereo = True

  345.         elif Carla.processMode == PROCESS_MODE_MULTIPLE_CLIENTS: # and LADISH_APP_NAME:

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

  347.             Carla.processMode = PROCESS_MODE_SINGLE_CLIENT

  348. 

  349.         Carla.host.set_engine_option(OPTION_FORCE_STEREO,          forceStereo,         "")

  350.         Carla.host.set_engine_option(OPTION_PREFER_PLUGIN_BRIDGES, preferPluginBridges, "")

  351.         Carla.host.set_engine_option(OPTION_PREFER_UI_BRIDGES,     preferUiBridges,     "")

  352.         Carla.host.set_engine_option(OPTION_UIS_ALWAYS_ON_TOP,     uisAlwaysOnTop,      "")

  353.         Carla.host.set_engine_option(OPTION_UI_BRIDGES_TIMEOUT,    uiBridgesTimeout,    "")

  354.         Carla.host.set_engine_option(OPTION_PROCESS_MODE,          Carla.processMode,   "")

  355.         Carla.host.set_engine_option(OPTION_MAX_PARAMETERS,        Carla.maxParameters, "")

  356.         Carla.host.set_engine_option(OPTION_TRANSPORT_MODE,        transportMode,       "")

  357. 

  358.         return audioDriver

  359. 

  360.     def startEngine(self):

  361.         audioDriver = self.setEngineSettings()

  362. 

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

  364.             #if self.fFirstEngineInit:

  365.                 #self.fFirstEngineInit = False

  366.                 #return

  367. 

  368.             audioError = cString(Carla.host.get_last_error())

  369. 

  370.             if audioError:

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

  372.             else:

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

  374.             return

  375. 

  376.         self.fBufferSize = Carla.host.get_buffer_size()

  377.         self.fSampleRate = Carla.host.get_sample_rate()

  378. 

  379.         #self.fFirstEngineInit = False

  380. 

  381.         # Peaks and TimeInfo

  382.         self.fIdleTimerFast = self.startTimer(self.fSavedSettings["Main/RefreshInterval"])

  383.         # LEDs and edit dialog parameters

  384.         self.fIdleTimerSlow = self.startTimer(self.fSavedSettings["Main/RefreshInterval"]*2)

  385. 

  386.     def stopEngine(self):

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

  388.             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"

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

  390.                                                                          QMessageBox.Yes | QMessageBox.No, QMessageBox.No)

  391.             if ask != QMessageBox.Yes:

  392.                 return

  393. 

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

  395.             self.fContainer.removeAllPlugins()

  396. 

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

  398.             print(cString(Carla.host.get_last_error()))

  399. 

  400.         self.fBufferSize = 0

  401.         self.fSampleRate = 0.0

  402. 

  403.         if self.fIdleTimerFast != 0:

  404.             self.killTimer(self.fIdleTimerFast)

  405.             self.fIdleTimerFast = 0

  406. 

  407.         if self.fIdleTimerSlow != 0:

  408.             self.killTimer(self.fIdleTimerSlow)

  409.             self.fIdleTimerSlow = 0

  410. 

  411.     # -----------------------------------------------------------------

  412.     # Internal stuff (plugins)

  413. 

  414.     def getExtraStuff(self, plugin):

  415.         ptype = plugin['type']

  416. 

  417.         if ptype == PLUGIN_LADSPA:

  418.             uniqueId = plugin['uniqueId']

  419. 

  420.             self.maybeLoadRDFs()

  421. 

  422.             for rdfItem in self.fLadspaRdfList:

  423.                 if rdfItem.UniqueID == uniqueId:

  424.                     return pointer(rdfItem)

  425. 

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

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

  428.                 # return a dummy non-null pointer

  429.                 INTPOINTER = POINTER(c_int)

  430.                 int1 = c_int(0x1)

  431.                 addr = addressof(int1)

  432.                 return cast(addr, INTPOINTER)

  433. 

  434.         return c_nullptr

  435. 

  436.     def maybeLoadRDFs(self):

  437.         if not self.fLadspaRdfNeedsUpdate:

  438.             return

  439. 

  440.         self.fLadspaRdfNeedsUpdate = False

  441.         self.fLadspaRdfList = []

  442. 

  443.         if not haveLRDF:

  444.             return

  445. 

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

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

  448. 

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

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

  451. 

  452.             try:

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

  454.             except:

  455.                 pass

  456. 

  457.             frLadspa.close()

  458. 

  459.     def setLoadRDFsNeeded(self):

  460.         self.fLadspaRdfNeedsUpdate = True

  461. 

  462.     # -----------------------------------------------------------------

  463.     # Internal stuff (transport)

  464. 

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

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

  467.             return

  468.         if self.fSampleRate == 0.0:

  469.             return

  470. 

  471.         timeInfo = Carla.host.get_transport_info()

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

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

  474. 

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

  476.             if playing:

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

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

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

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

  481.             else:

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

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

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

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

  486. 

  487.             self.fLastTransportState = playing

  488. 

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

  490.             time = frame / self.fSampleRate

  491.             secs = time % 60

  492.             mins = (time / 60) % 60

  493.             hrs  = (time / 3600) % 60

  494. 

  495.             #textTransport = "Transport %s, at %02i:%02i:%02i" % ("playing" if playing else "stopped", hrs, mins, secs)

  496.             #self.fInfoLabel.setText("%s | %s" % (self.fInfoText, textTransport))

  497. 

  498.             self.fLastTransportFrame = frame

  499. 

  500.     def setTransportMenuEnabled(self, enabled):

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

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

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

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

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

  506. 

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

  508.     # Internal stuff (settings)

  509. 

  510.     def loadSettings(self, doGeometry):

  511.         settings = QSettings()

  512. 

  513.         if doGeometry:

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

  515. 

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

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

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

  519. 

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

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

  522.             #else:

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

  524. 

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

  526. 

  527.             #self.ui.cb_disk.setItemData(0, HOME)

  528. 

  529.             #for i in range(len(diskFolders)):

  530.                 #if i == 0: continue

  531.                 #folder = diskFolders[i]

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

  533. 

  534.             if MACOS and not settings.value("Main/UseProTheme", True, type=bool):

  535.                 self.setUnifiedTitleAndToolBarOnMac(True)

  536. 

  537.         # ---------------------------------------------

  538.         # plugin checks

  539. 

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

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

  542. 

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

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

  545. 

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

  547. 

  548.         if not Carla.isPlugin:

  549.             # engine

  550.             self.setEngineSettings(settings)

  551. 

  552.             # plugin paths

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

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

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

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

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

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

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

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

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

  562. 

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

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

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

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

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

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

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

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

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

  572. 

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

  574. 

  575.         useCustomMiniCanvasPaint = bool(settings.value("Main/UseProTheme", True, type=bool) and

  576.                                         settings.value("Main/ProThemeColor", "Black", type=str) == "Black")

  577. 

  578.         self.fSavedSettings = {

  579.             "Main/DefaultProjectFolder":      settings.value("Main/DefaultProjectFolder", HOME, type=str),

  580.             "Main/RefreshInterval":           settings.value("Main/RefreshInterval",      50, type=int),

  581.             "Canvas/Theme":                   settings.value("Canvas/Theme",              CANVAS_DEFAULT_THEME_NAME, type=str),

  582.             "Canvas/AutoHideGroups":          settings.value("Canvas/AutoHideGroups",     False, type=bool),

  583.             "Canvas/UseBezierLines":          settings.value("Canvas/UseBezierLines",     True, type=bool),

  584.             "Canvas/EyeCandy":                settings.value("Canvas/EyeCandy",           CANVAS_EYECANDY_SMALL, type=int),

  585.             "Canvas/UseOpenGL":               settings.value("Canvas/UseOpenGL",          False, type=bool),

  586.             "Canvas/Antialiasing":            settings.value("Canvas/Antialiasing",       CANVAS_ANTIALIASING_SMALL, type=int),

  587.             "Canvas/HighQualityAntialiasing": settings.value("Canvas/HighQualityAntialiasing", False, type=bool),

  588.             "UseCustomMiniCanvasPaint":       useCustomMiniCanvasPaint

  589.         }

  590. 

  591.         # ---------------------------------------------

  592. 

  593.         if self.fIdleTimerFast != 0:

  594.             self.killTimer(self.fIdleTimerFast)

  595.             self.fIdleTimerFast = self.startTimer(self.fSavedSettings["Main/RefreshInterval"])

  596. 

  597.         if self.fIdleTimerSlow != 0:

  598.             self.killTimer(self.fIdleTimerSlow)

  599.             self.fIdleTimerSlow = self.startTimer(self.fSavedSettings["Main/RefreshInterval"]*2)

  600. 

  601.     def saveSettings(self):

  602.         settings = QSettings()

  603. 

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

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

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

  607.         #settings.setValue("HorizontalScrollBarValue", self.ui.graphicsView.horizontalScrollBar().value())

  608.         #settings.setValue("VerticalScrollBarValue", self.ui.graphicsView.verticalScrollBar().value())

  609. 

  610.         #diskFolders = []

  611. 

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

  613.             #diskFolders.append(self.ui.cb_disk.itemData(i))

  614. 

  615.         #settings.setValue("DiskFolders", diskFolders)

  616. 

  617.         self.fContainer.saveSettings(settings)

  618. 

  619.     # -----------------------------------------------------------------

  620.     # Internal stuff (gui)

  621. 

  622.     def setProperWindowTitle(self):

  623.         title = self.fClientName

  624. 

  625.         if self.fProjectFilename:

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

  627.         if self.fSessionManagerName:

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

  629. 

  630.         self.setWindowTitle(title)

  631. 

  632.     # -----------------------------------------------------------------

  633. 

  634.     @pyqtSlot()

  635.     def slot_fileNew(self):

  636.         self.fContainer.removeAllPlugins()

  637.         self.fProjectFilename = ""

  638.         self.setProperWindowTitle()

  639. 

  640.     @pyqtSlot()

  641.     def slot_fileOpen(self):

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

  643.         filenameTry = QFileDialog.getOpenFileName(self, self.tr("Open Carla Project File"), self.fSavedSettings["Main/DefaultProjectFolder"], filter=fileFilter)[0]

  644. 

  645.         if not filenameTry:

  646.             return

  647. 

  648.         newFile = True

  649. 

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

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

  652.                                                                           QMessageBox.Yes | QMessageBox.No, QMessageBox.No)

  653.             newFile = ask == QMessageBox.Yes

  654. 

  655.         if newFile:

  656.             self.fContainer.removeAllPlugins()

  657.             self.fProjectFilename = filenameTry

  658.             self.setProperWindowTitle()

  659.             self.loadProjectNow()

  660.         else:

  661.             filenameOld = self.fProjectFilename

  662.             self.fProjectFilename = filenameTry

  663.             self.loadProjectNow()

  664.             self.fProjectFilename = filenameOld

  665. 

  666.     @pyqtSlot()

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

  668.         if self.fProjectFilename and not saveAs:

  669.             return self.saveProjectNow()

  670. 

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

  672.         filenameTry = QFileDialog.getSaveFileName(self, self.tr("Save Carla Project File"), self.fSavedSettings["Main/DefaultProjectFolder"], filter=fileFilter)[0]

  673. 

  674.         if not filenameTry:

  675.             return

  676. 

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

  678.             filenameTry += ".carxp"

  679. 

  680.         if self.fProjectFilename != filenameTry:

  681.             self.fProjectFilename = filenameTry

  682.             self.setProperWindowTitle()

  683. 

  684.         self.saveProjectNow()

  685. 

  686.     @pyqtSlot()

  687.     def slot_fileSaveAs(self):

  688.         self.slot_fileSave(True)

  689. 

  690.     # -----------------------------------------------------------------

  691. 

  692.     @pyqtSlot()

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

  694.         if doStart: self.startEngine()

  695. 

  696.         check = Carla.host.is_engine_running()

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

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

  699. 

  700.         if not Carla.isPlugin:

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

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

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

  704. 

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

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

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

  708. 

  709.             self.setTransportMenuEnabled(check)

  710. 

  711.         if check:

  712.             #self.fInfoText = "Engine running | SampleRate: %g | BufferSize: %i" % (self.fSampleRate, self.fBufferSize)

  713.             self.fContainer.engineStarted()

  714. 

  715.             if not Carla.isPlugin:

  716.                 self.refreshTransport(True)

  717. 

  718.     @pyqtSlot()

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

  720.         if doStop: self.stopEngine()

  721. 

  722.         check = Carla.host.is_engine_running()

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

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

  725. 

  726.         if not Carla.isPlugin:

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

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

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

  730. 

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

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

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

  734. 

  735.             self.setTransportMenuEnabled(check)

  736. 

  737.         if not check:

  738.             self.fContainer.engineStopped()

  739.             #self.fInfoText = ""

  740.             #self.fInfoLabel.setText("Engine stopped")

  741. 

  742.     # -----------------------------------------------------------------

  743. 

  744.     @pyqtSlot()

  745.     def slot_pluginAdd(self):

  746.         dialog = PluginDatabaseW(self)

  747. 

  748.         if not dialog.exec_():

  749.             return

  750. 

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

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

  753.             return

  754. 

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

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

  757.         filename = dialog.fRetPlugin['binary']

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

  759.         extraStuff = self.getExtraStuff(dialog.fRetPlugin)

  760. 

  761.         if not Carla.host.add_plugin(btype, ptype, filename, None, label, c_nullptr):

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

  763.             return

  764. 

  765.     @pyqtSlot()

  766.     def slot_pluginRemoveAll(self):

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

  768.         self.fContainer.removeAllPlugins()

  769.         Carla.host.remove_all_plugins()

  770. 

  771.     # -----------------------------------------------------------------

  772. 

  773.     @pyqtSlot(bool)

  774.     def slot_transportPlayPause(self, toggled):

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

  776.             return

  777. 

  778.         if toggled:

  779.             Carla.host.transport_play()

  780.         else:

  781.             Carla.host.transport_pause()

  782. 

  783.         self.refreshTransport()

  784. 

  785.     @pyqtSlot()

  786.     def slot_transportStop(self):

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

  788.             return

  789. 

  790.         Carla.host.transport_pause()

  791.         Carla.host.transport_relocate(0)

  792. 

  793.         self.refreshTransport()

  794. 

  795.     @pyqtSlot()

  796.     def slot_transportBackwards(self):

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

  798.             return

  799. 

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

  801. 

  802.         if newFrame < 0:

  803.             newFrame = 0

  804. 

  805.         Carla.host.transport_relocate(newFrame)

  806. 

  807.     @pyqtSlot()

  808.     def slot_transportForwards(self):

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

  810.             return

  811. 

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

  813.         Carla.host.transport_relocate(newFrame)

  814. 

  815.     # -----------------------------------------------------------------

  816. 

  817.     @pyqtSlot()

  818.     def slot_aboutCarla(self):

  819.         CarlaAboutW(self).exec_()

  820. 

  821.     @pyqtSlot()

  822.     def slot_aboutQt(self):

  823.         QApplication.instance().aboutQt()

  824. 

  825.     # -----------------------------------------------------------------

  826. 

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

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

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

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

  831. 

  832.     @pyqtSlot(int)

  833.     def slot_handlePluginAddedCallback(self, pluginId):

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

  835. 

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

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

  838. 

  839.     @pyqtSlot(int)

  840.     def slot_handlePluginRemovedCallback(self, pluginId):

  841.         self.fContainer.removePlugin(pluginId)

  842. 

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

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

  845. 

  846.     @pyqtSlot(int, str)

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

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

  849. 

  850.     @pyqtSlot(int)

  851.     def slot_handleBufferSizeChangedCallback(self, newBufferSize):

  852.         self.fBufferSize = newBufferSize

  853.         #self.fInfoText   = "Engine running | SampleRate: %g | BufferSize: %i" % (self.fSampleRate, self.fBufferSize)

  854. 

  855.     @pyqtSlot(float)

  856.     def slot_handleSampleRateChangedCallback(self, newSampleRate):

  857.         self.fSampleRate = newSampleRate

  858.         #self.fInfoText   = "Engine running | SampleRate: %g | BufferSize: %i" % (self.fSampleRate, self.fBufferSize)

  859. 

  860.     # -----------------------------------------------------------------

  861. 

  862.     @pyqtSlot(str)

  863.     def slot_handleEngineStartedCallback(self, driverName):

  864.         self.fBufferSize = Carla.host.get_buffer_size()

  865.         self.fSampleRate = Carla.host.get_sample_rate()

  866. 

  867.         if self.fIdleTimerFast == 0:

  868.             self.fIdleTimerFast = self.startTimer(self.fSavedSettings["Main/RefreshInterval"])

  869.         if self.fIdleTimerSlow == 0:

  870.             self.fIdleTimerSlow = self.startTimer(self.fSavedSettings["Main/RefreshInterval"]*2)

  871. 

  872.         self.slot_engineStart(False)

  873. 

  874.     @pyqtSlot()

  875.     def slot_handleEngineStoppedCallback(self):

  876.         self.fBufferSize = 0

  877.         self.fSampleRate = 0.0

  878. 

  879.         if self.fIdleTimerFast != 0:

  880.             self.killTimer(self.fIdleTimerFast)

  881.             self.fIdleTimerFast = 0

  882. 

  883.         if self.fIdleTimerSlow != 0:

  884.             self.killTimer(self.fIdleTimerSlow)

  885.             self.fIdleTimerSlow = 0

  886. 

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

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

  889.             self.fContainer.removeAllPlugins() # FIXME?

  890. 

  891.         self.slot_engineStop(False)

  892. 

  893.     # -----------------------------------------------------------------

  894. 

  895.     @pyqtSlot()

  896.     def slot_handleSIGUSR1(self):

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

  898.         #QTimer.singleShot(0, self, SLOT("slot_fileSave)

  899. 

  900.     @pyqtSlot()

  901.     def slot_handleSIGTERM(self):

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

  903.         self.close()

  904. 

  905.     # -----------------------------------------------------------------

  906. 

  907.     def timerEvent(self, event):

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

  909.             if not Carla.isPlugin:

  910.                 Carla.host.engine_idle()

  911.                 self.refreshTransport()

  912. 

  913.             self.fContainer.idleFast()

  914. 

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

  916.             self.fContainer.idleSlow()

  917. 

  918.         QMainWindow.timerEvent(self, event)

  919. 

  920.     def closeEvent(self, event):

  921.         if self.fIdleTimerFast != 0:

  922.             self.killTimer(self.fIdleTimerFast)

  923.             self.fIdleTimerFast = 0

  924. 

  925.         if self.fIdleTimerSlow != 0:

  926.             self.killTimer(self.fIdleTimerSlow)

  927.             self.fIdleTimerSlow = 0

  928. 

  929.         self.saveSettings()

  930. 

  931.         if Carla.host.is_engine_running():

  932.             Carla.host.set_engine_about_to_close()

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

  934.             self.fContainer.removeAllPlugins()

  935.             self.stopEngine()

  936. 

  937.         QMainWindow.closeEvent(self, event)

  938. 

  939. # ------------------------------------------------------------------------------------------------------------

  940. # Engine callback

  941. 

  942. def EngineCallback(ptr, action, pluginId, value1, value2, value3, valueStr):

  943.     if pluginId < 0 or not Carla.gui:

  944.         return

  945. 

  946.     if action == CALLBACK_DEBUG:

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

  948.     elif action == CALLBACK_PLUGIN_ADDED:

  949.         Carla.gui.PluginAddedCallback.emit(pluginId)

  950.     elif action == CALLBACK_PLUGIN_REMOVED:

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

  952.     elif action == CALLBACK_PLUGIN_RENAMED:

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

  954.     elif action == CALLBACK_PARAMETER_VALUE_CHANGED:

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

  956.     elif action == CALLBACK_PARAMETER_DEFAULT_CHANGED:

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

  958.     elif action == CALLBACK_PARAMETER_MIDI_CHANNEL_CHANGED:

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

  960.     elif action == CALLBACK_PARAMETER_MIDI_CC_CHANGED:

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

  962.     elif action == CALLBACK_PROGRAM_CHANGED:

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

  964.     elif action == CALLBACK_MIDI_PROGRAM_CHANGED:

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

  966.     elif action == CALLBACK_NOTE_ON:

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

  968.     elif action == CALLBACK_NOTE_OFF:

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

  970.     elif action == CALLBACK_SHOW_GUI:

  971.         Carla.gui.ShowGuiCallback.emit(pluginId, value1)

  972.     elif action == CALLBACK_UPDATE:

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

  974.     elif action == CALLBACK_RELOAD_INFO:

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

  976.     elif action == CALLBACK_RELOAD_PARAMETERS:

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

  978.     elif action == CALLBACK_RELOAD_PROGRAMS:

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

  980.     elif action == CALLBACK_RELOAD_ALL:

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

  982.     elif action == CALLBACK_PATCHBAY_CLIENT_ADDED:

  983.         Carla.gui.PatchbayClientAddedCallback.emit(value1, value2, cString(valueStr))

  984.     elif action == CALLBACK_PATCHBAY_CLIENT_REMOVED:

  985.         Carla.gui.PatchbayClientRemovedCallback.emit(value1, cString(valueStr))

  986.     elif action == CALLBACK_PATCHBAY_CLIENT_RENAMED:

  987.         Carla.gui.PatchbayClientRenamedCallback.emit(value1, cString(valueStr))

  988.     elif action == CALLBACK_PATCHBAY_PORT_ADDED:

  989.         Carla.gui.PatchbayPortAddedCallback.emit(value1, value2, int(value3), cString(valueStr))

  990.     elif action == CALLBACK_PATCHBAY_PORT_REMOVED:

  991.         Carla.gui.PatchbayPortRemovedCallback.emit(value1, value2, cString(valueStr))

  992.     elif action == CALLBACK_PATCHBAY_PORT_RENAMED:

  993.         Carla.gui.PatchbayPortRenamedCallback.emit(value1, value2, cString(valueStr))

  994.     elif action == CALLBACK_PATCHBAY_CONNECTION_ADDED:

  995.         Carla.gui.PatchbayConnectionAddedCallback.emit(value1, value2, value3)

  996.     elif action == CALLBACK_PATCHBAY_CONNECTION_REMOVED:

  997.         Carla.gui.PatchbayConnectionRemovedCallback.emit(value1)

  998.     elif action == CALLBACK_PATCHBAY_ICON_CHANGED:

  999.         Carla.gui.PatchbayIconChangedCallback.emit(value1, value2)

  1000.     elif action == CALLBACK_BUFFER_SIZE_CHANGED:

  1001.         Carla.gui.BufferSizeChangedCallback.emit(value1)

  1002.     elif action == CALLBACK_SAMPLE_RATE_CHANGED:

  1003.         Carla.gui.SampleRateChangedCallback.emit(value3)

  1004.     elif action == CALLBACK_PROCESS_MODE_CHANGED:

  1005.         Carla.gui.ProcessModeChangedCallback.emit(value1)

  1006.     elif action == CALLBACK_ENGINE_STARTED:

  1007.         Carla.gui.EngineStartedCallback.emit(cString(valueStr))

  1008.     elif action == CALLBACK_ENGINE_STOPPED:

  1009.         Carla.gui.EngineStoppedChangedCallback.emit()

  1010.     elif action == CALLBACK_NSM_ANNOUNCE:

  1011.         Carla.gui.NSM_AnnounceCallback.emit(cString(valueStr))

  1012.     elif action == CALLBACK_NSM_OPEN:

  1013.         Carla.gui.NSM_OpenCallback.emit(cString(valueStr))

  1014.     elif action == CALLBACK_NSM_SAVE:

  1015.         Carla.gui.NSM_SaveCallback.emit()

  1016.     elif action == CALLBACK_ERROR:

  1017.         Carla.gui.ErrorCallback.emit(cString(valueStr))

  1018.     elif action == CALLBACK_QUIT:

  1019.         Carla.gui.QuitCallback.emit()