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carla_host.py
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carla_host.py
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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
# Carla host code
# Copyright (C) 2011-2022 Filipe Coelho <falktx@falktx.com>
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation; either version 2 of
# the License, or any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# For a full copy of the GNU General Public License see the doc/GPL.txt file.
# ------------------------------------------------------------------------------------------------------------
# Imports (Global)
import json
# ------------------------------------------------------------------------------------------------------------
# Imports (ctypes)
from ctypes import (
byref, pointer
)
# ------------------------------------------------------------------------------------------------------------
# Imports (PyQt5)
# This fails in some configurations, assume >= 5.6.0 in that case
try:
from PyQt5.Qt import PYQT_VERSION
except ImportError:
PYQT_VERSION = 0x50600
from PyQt5.QtCore import (
QT_VERSION, qCritical, QBuffer, QEventLoop, QFileInfo, QIODevice, QMimeData, QModelIndex, QPointF, QTimer, QEvent
)
from PyQt5.QtGui import (
QImage, QImageWriter, QPainter, QPalette, QBrush
)
from PyQt5.QtWidgets import (
QAction, QApplication, QInputDialog, QFileSystemModel, QListWidgetItem, QGraphicsView, QMainWindow
)
# ------------------------------------------------------------------------------------------------------------
# Imports (Custom)
import ui_carla_host
from carla_app import *
from carla_backend import *
from carla_backend_qt import CarlaHostQtDLL, CarlaHostQtNull
from carla_frontend import CarlaFrontendLib
from carla_shared import *
from carla_settings import *
from carla_utils import *
from carla_widgets import *
from patchcanvas import patchcanvas
from widgets.digitalpeakmeter import DigitalPeakMeter
from widgets.pixmapkeyboard import PixmapKeyboardHArea
# ------------------------------------------------------------------------------------------------------------
# Try Import OpenGL
try:
from PyQt5.QtOpenGL import QGLWidget
hasGL = True
except:
hasGL = False
# ------------------------------------------------------------------------------------------------------------
# Safe exception hook, needed for PyQt5
def sys_excepthook(typ, value, tback):
return sys.__excepthook__(typ, value, tback)
# ------------------------------------------------------------------------------------------------------------
# Session Management support
CARLA_CLIENT_NAME = os.getenv("CARLA_CLIENT_NAME")
LADISH_APP_NAME = os.getenv("LADISH_APP_NAME")
NSM_URL = os.getenv("NSM_URL")
# ------------------------------------------------------------------------------------------------------------
# Small print helper
def processMode2Str(processMode):
if processMode == ENGINE_PROCESS_MODE_SINGLE_CLIENT:
return "Single client"
if processMode == ENGINE_PROCESS_MODE_MULTIPLE_CLIENTS:
return "Multi client"
if processMode == ENGINE_PROCESS_MODE_CONTINUOUS_RACK:
return "Continuous Rack"
if processMode == ENGINE_PROCESS_MODE_PATCHBAY:
return "Patchbay"
if processMode == ENGINE_PROCESS_MODE_BRIDGE:
return "Bridge"
return "Unknown"
# ------------------------------------------------------------------------------------------------------------
# Carla Print class
class CarlaPrint:
def __init__(self, err):
self.err = err
def flush(self):
gCarla.utils.fflush(self.err)
def write(self, string):
gCarla.utils.fputs(self.err, string)
# ------------------------------------------------------------------------------------------------------------
# Host Window
class HostWindow(QMainWindow):
#class HostWindow(QMainWindow, PluginEditParentMeta, metaclass=PyQtMetaClass):
# signals
SIGTERM = pyqtSignal()
SIGUSR1 = pyqtSignal()
# CustomActions
CUSTOM_ACTION_NONE = 0
CUSTOM_ACTION_APP_CLOSE = 1
CUSTOM_ACTION_PROJECT_LOAD = 2
# --------------------------------------------------------------------------------------------------------
def __init__(self, host, withCanvas, parent=None):
QMainWindow.__init__(self, parent)
self.host = host
self.ui = ui_carla_host.Ui_CarlaHostW()
self.ui.setupUi(self)
gCarla.gui = self
if False:
# kdevelop likes this :)
host = CarlaHostNull()
self.host = host
self._true = c_char_p("true".encode("utf-8"))
self.fParentOrSelf = parent or self
# ----------------------------------------------------------------------------------------------------
# Internal stuff
self.fIdleTimerNull = self.startTimer(1000) # keep application signals alive
self.fIdleTimerFast = 0
self.fIdleTimerSlow = 0
self.fLadspaRdfNeedsUpdate = True
self.fLadspaRdfList = []
self.fPluginCount = 0
self.fPluginList = []
self.fPluginListDialog = None
self.fFavoritePlugins = []
self.fProjectFilename = ""
self.fIsProjectLoading = False
self.fCurrentlyRemovingAllPlugins = False
self.fHasLoadedLv2Plugins = False
self.fLastTransportBPM = 0.0
self.fLastTransportFrame = 0
self.fLastTransportState = False
self.fBufferSize = 0
self.fSampleRate = 0.0
self.fOscAddressTCP = ""
self.fOscAddressUDP = ""
if MACOS:
self.fMacClosingHelper = True
# CancelableActionCallback Box
self.fCancelableActionBox = None
# run a custom action after engine is properly closed
self.fCustomStopAction = self.CUSTOM_ACTION_NONE
# first attempt of auto-start engine doesn't show an error
self.fFirstEngineInit = True
# to be filled with key-value pairs of current settings
self.fSavedSettings = {}
# true if NSM server handles our window management
self.fWindowCloseHideGui = False
if host.isControl:
self.fClientName = "Carla-Control"
self.fSessionManagerName = "Control"
elif host.isPlugin:
self.fClientName = "Carla-Plugin"
self.fSessionManagerName = "Plugin"
elif LADISH_APP_NAME:
self.fClientName = LADISH_APP_NAME
self.fSessionManagerName = ""
elif NSM_URL and host.nsmOK:
self.fClientName = "Carla.tmp"
self.fSessionManagerName = "Non Session Manager TMP"
self.fWindowCloseHideGui = True
else:
self.fClientName = CARLA_CLIENT_NAME or "Carla"
self.fSessionManagerName = ""
# ----------------------------------------------------------------------------------------------------
# Internal stuff (patchbay)
self.fPeaksCleared = True
self.fExternalPatchbay = False
self.fSelectedPlugins = []
self.fCanvasWidth = 0
self.fCanvasHeight = 0
self.fMiniCanvasUpdateTimeout = 0
self.fWithCanvas = withCanvas
# ----------------------------------------------------------------------------------------------------
# Internal stuff (logs)
self.autoscrollOnNewLog = True
self.lastLogSliderPos = 0
# ----------------------------------------------------------------------------------------------------
# Set up GUI (engine stopped)
if self.host.isPlugin or self.host.isControl:
self.ui.act_file_save.setVisible(False)
self.ui.act_engine_start.setEnabled(False)
self.ui.act_engine_start.setVisible(False)
self.ui.act_engine_stop.setEnabled(False)
self.ui.act_engine_stop.setVisible(False)
self.ui.menu_Engine.setEnabled(False)
self.ui.menu_Engine.setVisible(False)
self.ui.menu_Engine.menuAction().setVisible(False)
self.ui.tabWidget.removeTab(2)
if self.host.isControl:
self.ui.act_file_new.setVisible(False)
self.ui.act_file_open.setVisible(False)
self.ui.act_file_save_as.setVisible(False)
self.ui.tabUtils.removeTab(0)
else:
self.ui.act_file_save_as.setText(self.tr("Export as..."))
if not withCanvas:
self.ui.tabWidget.tabBar().hide()
else:
self.ui.act_engine_start.setEnabled(True)
if WINDOWS:
self.ui.tabWidget.removeTab(2)
if self.host.isControl:
self.ui.act_file_refresh.setEnabled(False)
else:
self.ui.act_file_connect.setEnabled(False)
self.ui.act_file_connect.setVisible(False)
self.ui.act_file_refresh.setEnabled(False)
self.ui.act_file_refresh.setVisible(False)
if self.fSessionManagerName and not self.host.isPlugin:
self.ui.act_file_new.setEnabled(False)
self.ui.act_file_open.setEnabled(False)
self.ui.act_file_save.setEnabled(False)
self.ui.act_file_save_as.setEnabled(False)
self.ui.act_engine_stop.setEnabled(False)
self.ui.act_plugin_remove_all.setEnabled(False)
self.ui.act_canvas_show_internal.setChecked(False)
self.ui.act_canvas_show_internal.setVisible(False)
self.ui.act_canvas_show_external.setChecked(False)
self.ui.act_canvas_show_external.setVisible(False)
self.ui.menu_PluginMacros.setEnabled(False)
self.ui.menu_Canvas.setEnabled(False)
self.ui.dockWidgetTitleBar = QWidget(self)
self.ui.dockWidget.setTitleBarWidget(self.ui.dockWidgetTitleBar)
if not withCanvas:
self.ui.act_canvas_show_internal.setVisible(False)
self.ui.act_canvas_show_external.setVisible(False)
self.ui.act_canvas_arrange.setVisible(False)
self.ui.act_canvas_refresh.setVisible(False)
self.ui.act_canvas_save_image.setVisible(False)
self.ui.act_canvas_zoom_100.setVisible(False)
self.ui.act_canvas_zoom_fit.setVisible(False)
self.ui.act_canvas_zoom_in.setVisible(False)
self.ui.act_canvas_zoom_out.setVisible(False)
self.ui.act_settings_show_meters.setVisible(False)
self.ui.act_settings_show_keyboard.setVisible(False)
self.ui.menu_Canvas_Zoom.setEnabled(False)
self.ui.menu_Canvas_Zoom.setVisible(False)
self.ui.menu_Canvas_Zoom.menuAction().setVisible(False)
self.ui.menu_Canvas.setEnabled(False)
self.ui.menu_Canvas.setVisible(False)
self.ui.menu_Canvas.menuAction().setVisible(False)
self.ui.tw_miniCanvas.hide()
self.ui.tabWidget.removeTab(1)
if WINDOWS:
self.ui.tabWidget.tabBar().hide()
# ----------------------------------------------------------------------------------------------------
# Set up GUI (disk)
exts = gCarla.utils.get_supported_file_extensions()
self.fDirModel = QFileSystemModel(self)
self.fDirModel.setRootPath(HOME)
self.fDirModel.setNameFilters(tuple(("*." + i) for i in exts))
self.ui.fileTreeView.setModel(self.fDirModel)
self.ui.fileTreeView.setRootIndex(self.fDirModel.index(HOME))
self.ui.fileTreeView.setColumnHidden(1, True)
self.ui.fileTreeView.setColumnHidden(2, True)
self.ui.fileTreeView.setColumnHidden(3, True)
self.ui.fileTreeView.setHeaderHidden(True)
# ----------------------------------------------------------------------------------------------------
# Set up GUI (transport)
fontMetrics = self.ui.l_transport_bbt.fontMetrics()
minValueWidth = fontMetricsHorizontalAdvance(fontMetrics, "000|00|0000")
minLabelWidth = fontMetricsHorizontalAdvance(fontMetrics, self.ui.label_transport_frame.text())
labelTimeWidth = fontMetricsHorizontalAdvance(fontMetrics, self.ui.label_transport_time.text())
labelBBTWidth = fontMetricsHorizontalAdvance(fontMetrics, self.ui.label_transport_bbt.text())
if minLabelWidth < labelTimeWidth:
minLabelWidth = labelTimeWidth
if minLabelWidth < labelBBTWidth:
minLabelWidth = labelBBTWidth
self.ui.label_transport_frame.setMinimumWidth(minLabelWidth + 3)
self.ui.label_transport_time.setMinimumWidth(minLabelWidth + 3)
self.ui.label_transport_bbt.setMinimumWidth(minLabelWidth + 3)
self.ui.l_transport_bbt.setMinimumWidth(minValueWidth + 3)
self.ui.l_transport_frame.setMinimumWidth(minValueWidth + 3)
self.ui.l_transport_time.setMinimumWidth(minValueWidth + 3)
if host.isPlugin:
self.ui.b_transport_play.setEnabled(False)
self.ui.b_transport_stop.setEnabled(False)
self.ui.b_transport_backwards.setEnabled(False)
self.ui.b_transport_forwards.setEnabled(False)
self.ui.group_transport_controls.setEnabled(False)
self.ui.group_transport_controls.setVisible(False)
self.ui.cb_transport_link.setEnabled(False)
self.ui.cb_transport_link.setVisible(False)
self.ui.cb_transport_jack.setEnabled(False)
self.ui.cb_transport_jack.setVisible(False)
self.ui.dsb_transport_bpm.setEnabled(False)
self.ui.dsb_transport_bpm.setReadOnly(True)
self.ui.w_transport.setEnabled(False)
# ----------------------------------------------------------------------------------------------------
# Set up GUI (rack)
self.ui.listWidget.setHostAndParent(self.host, self)
sb = self.ui.listWidget.verticalScrollBar()
self.ui.rackScrollBar.setMinimum(sb.minimum())
self.ui.rackScrollBar.setMaximum(sb.maximum())
self.ui.rackScrollBar.setValue(sb.value())
sb.rangeChanged.connect(self.ui.rackScrollBar.setRange)
sb.valueChanged.connect(self.ui.rackScrollBar.setValue)
self.ui.rackScrollBar.rangeChanged.connect(sb.setRange)
self.ui.rackScrollBar.valueChanged.connect(sb.setValue)
self.updateStyle()
self.ui.rack.setStyleSheet("""
CarlaRackList#CarlaRackList {
background-color: black;
}
""")
# ----------------------------------------------------------------------------------------------------
# Set up GUI (patchbay)
self.ui.peak_in.setChannelCount(2)
self.ui.peak_in.setMeterColor(DigitalPeakMeter.COLOR_BLUE)
self.ui.peak_in.setMeterOrientation(DigitalPeakMeter.VERTICAL)
self.ui.peak_in.setFixedWidth(25)
self.ui.peak_out.setChannelCount(2)
self.ui.peak_out.setMeterColor(DigitalPeakMeter.COLOR_GREEN)
self.ui.peak_out.setMeterOrientation(DigitalPeakMeter.VERTICAL)
self.ui.peak_out.setFixedWidth(25)
self.ui.scrollArea = PixmapKeyboardHArea(self.ui.patchbay)
self.ui.keyboard = self.ui.scrollArea.keyboard
self.ui.patchbay.layout().addWidget(self.ui.scrollArea, 1, 0, 1, 0)
self.ui.scrollArea.setEnabled(False)
self.ui.miniCanvasPreview.setRealParent(self)
self.ui.tw_miniCanvas.tabBar().hide()
# ----------------------------------------------------------------------------------------------------
# Set up GUI (logs)
self.ui.text_logs.textChanged.connect(self.slot_logButtonsState)
self.ui.logs_clear.clicked.connect(self.slot_logClear)
self.ui.logs_save.clicked.connect(self.slot_logSave)
self.ui.logs_autoscroll.stateChanged.connect(self.slot_toggleLogAutoscroll)
self.ui.text_logs.verticalScrollBar().valueChanged.connect(self.slot_logSliderMoved)
# ----------------------------------------------------------------------------------------------------
# Set up GUI (special stuff for Mac OS)
if MACOS:
self.ui.act_file_quit.setMenuRole(QAction.QuitRole)
self.ui.act_settings_configure.setMenuRole(QAction.PreferencesRole)
self.ui.act_help_about.setMenuRole(QAction.AboutRole)
self.ui.act_help_about_juce.setMenuRole(QAction.ApplicationSpecificRole)
self.ui.act_help_about_qt.setMenuRole(QAction.AboutQtRole)
self.ui.menu_Settings.setTitle("Panels")
# ----------------------------------------------------------------------------------------------------
# Load Settings
self.loadSettings(True)
# ----------------------------------------------------------------------------------------------------
# Set-up Canvas
if withCanvas:
self.scene = patchcanvas.PatchScene(self, self.ui.graphicsView)
self.ui.graphicsView.setScene(self.scene)
if self.fSavedSettings[CARLA_KEY_CANVAS_USE_OPENGL] and hasGL:
self.ui.glView = QGLWidget(self)
self.ui.graphicsView.setViewport(self.ui.glView)
self.setupCanvas()
# ----------------------------------------------------------------------------------------------------
# Set-up Icons
if self.fSavedSettings[CARLA_KEY_MAIN_SYSTEM_ICONS]:
self.ui.act_file_connect.setIcon(getIcon('network-connect', 16, 'svgz'))
self.ui.act_file_refresh.setIcon(getIcon('view-refresh', 16, 'svgz'))
self.ui.act_file_new.setIcon(getIcon('document-new', 16, 'svgz'))
self.ui.act_file_open.setIcon(getIcon('document-open', 16, 'svgz'))
self.ui.act_file_save.setIcon(getIcon('document-save', 16, 'svgz'))
self.ui.act_file_save_as.setIcon(getIcon('document-save-as', 16, 'svgz'))
self.ui.act_file_quit.setIcon(getIcon('application-exit', 16, 'svgz'))
self.ui.act_engine_start.setIcon(getIcon('media-playback-start', 16, 'svgz'))
self.ui.act_engine_stop.setIcon(getIcon('media-playback-stop', 16, 'svgz'))
self.ui.act_engine_panic.setIcon(getIcon('dialog-warning', 16, 'svgz'))
self.ui.act_engine_config.setIcon(getIcon('configure', 16, 'svgz'))
self.ui.act_plugin_add.setIcon(getIcon('list-add', 16, 'svgz'))
self.ui.act_plugin_add_jack.setIcon(getIcon('list-add', 16, 'svgz'))
self.ui.act_plugin_remove_all.setIcon(getIcon('edit-delete', 16, 'svgz'))
self.ui.act_canvas_arrange.setIcon(getIcon('view-sort-ascending', 16, 'svgz'))
self.ui.act_canvas_refresh.setIcon(getIcon('view-refresh', 16, 'svgz'))
self.ui.act_canvas_zoom_fit.setIcon(getIcon('zoom-fit-best', 16, 'svgz'))
self.ui.act_canvas_zoom_in.setIcon(getIcon('zoom-in', 16, 'svgz'))
self.ui.act_canvas_zoom_out.setIcon(getIcon('zoom-out', 16, 'svgz'))
self.ui.act_canvas_zoom_100.setIcon(getIcon('zoom-original', 16, 'svgz'))
self.ui.act_settings_configure.setIcon(getIcon('configure', 16, 'svgz'))
self.ui.b_disk_add.setIcon(getIcon('list-add', 16, 'svgz'))
self.ui.b_disk_remove.setIcon(getIcon('list-remove', 16, 'svgz'))
self.ui.b_transport_play.setIcon(getIcon('media-playback-start', 16, 'svgz'))
self.ui.b_transport_stop.setIcon(getIcon('media-playback-stop', 16, 'svgz'))
self.ui.b_transport_backwards.setIcon(getIcon('media-seek-backward', 16, 'svgz'))
self.ui.b_transport_forwards.setIcon(getIcon('media-seek-forward', 16, 'svgz'))
self.ui.logs_clear.setIcon(getIcon('edit-clear', 16, 'svgz'))
self.ui.logs_save.setIcon(getIcon('document-save', 16, 'svgz'))
# ----------------------------------------------------------------------------------------------------
# Connect actions to functions
self.ui.act_file_new.triggered.connect(self.slot_fileNew)
self.ui.act_file_open.triggered.connect(self.slot_fileOpen)
self.ui.act_file_save.triggered.connect(self.slot_fileSave)
self.ui.act_file_save_as.triggered.connect(self.slot_fileSaveAs)
self.ui.act_engine_start.triggered.connect(self.slot_engineStart)
self.ui.act_engine_stop.triggered.connect(self.slot_engineStop)
self.ui.act_engine_panic.triggered.connect(self.slot_pluginsDisable)
self.ui.act_engine_config.triggered.connect(self.slot_engineConfig)
self.ui.act_plugin_add.triggered.connect(self.slot_pluginAdd)
self.ui.act_plugin_add_jack.triggered.connect(self.slot_jackAppAdd)
self.ui.act_plugin_remove_all.triggered.connect(self.slot_confirmRemoveAll)
self.ui.act_plugins_enable.triggered.connect(self.slot_pluginsEnable)
self.ui.act_plugins_disable.triggered.connect(self.slot_pluginsDisable)
self.ui.act_plugins_volume100.triggered.connect(self.slot_pluginsVolume100)
self.ui.act_plugins_mute.triggered.connect(self.slot_pluginsMute)
self.ui.act_plugins_wet100.triggered.connect(self.slot_pluginsWet100)
self.ui.act_plugins_bypass.triggered.connect(self.slot_pluginsBypass)
self.ui.act_plugins_center.triggered.connect(self.slot_pluginsCenter)
self.ui.act_plugins_compact.triggered.connect(self.slot_pluginsCompact)
self.ui.act_plugins_expand.triggered.connect(self.slot_pluginsExpand)
self.ui.act_settings_show_toolbar.toggled.connect(self.slot_showToolbar)
self.ui.act_settings_show_meters.toggled.connect(self.slot_showCanvasMeters)
self.ui.act_settings_show_keyboard.toggled.connect(self.slot_showCanvasKeyboard)
self.ui.act_settings_show_side_panel.toggled.connect(self.slot_showSidePanel)
self.ui.act_settings_configure.triggered.connect(self.slot_configureCarla)
self.ui.act_help_about.triggered.connect(self.slot_aboutCarla)
self.ui.act_help_about_juce.triggered.connect(self.slot_aboutJuce)
self.ui.act_help_about_qt.triggered.connect(self.slot_aboutQt)
self.ui.cb_disk.currentIndexChanged.connect(self.slot_diskFolderChanged)
self.ui.b_disk_add.clicked.connect(self.slot_diskFolderAdd)
self.ui.b_disk_remove.clicked.connect(self.slot_diskFolderRemove)
self.ui.fileTreeView.doubleClicked.connect(self.slot_fileTreeDoubleClicked)
self.ui.b_transport_play.clicked.connect(self.slot_transportPlayPause)
self.ui.b_transport_stop.clicked.connect(self.slot_transportStop)
self.ui.b_transport_backwards.clicked.connect(self.slot_transportBackwards)
self.ui.b_transport_forwards.clicked.connect(self.slot_transportForwards)
self.ui.dsb_transport_bpm.valueChanged.connect(self.slot_transportBpmChanged)
self.ui.cb_transport_jack.clicked.connect(self.slot_transportJackEnabled)
self.ui.cb_transport_link.clicked.connect(self.slot_transportLinkEnabled)
self.ui.b_xruns.clicked.connect(self.slot_xrunClear)
self.ui.listWidget.customContextMenuRequested.connect(self.slot_showPluginActionsMenu)
self.ui.keyboard.noteOn.connect(self.slot_noteOn)
self.ui.keyboard.noteOff.connect(self.slot_noteOff)
self.ui.tabWidget.currentChanged.connect(self.slot_tabChanged)
self.ui.toolBar.visibilityChanged.connect(self.slot_toolbarVisibilityChanged)
if withCanvas:
self.ui.act_canvas_show_internal.triggered.connect(self.slot_canvasShowInternal)
self.ui.act_canvas_show_external.triggered.connect(self.slot_canvasShowExternal)
self.ui.act_canvas_arrange.triggered.connect(self.slot_canvasArrange)
self.ui.act_canvas_refresh.triggered.connect(self.slot_canvasRefresh)
self.ui.act_canvas_zoom_fit.triggered.connect(self.slot_canvasZoomFit)
self.ui.act_canvas_zoom_in.triggered.connect(self.slot_canvasZoomIn)
self.ui.act_canvas_zoom_out.triggered.connect(self.slot_canvasZoomOut)
self.ui.act_canvas_zoom_100.triggered.connect(self.slot_canvasZoomReset)
self.ui.act_canvas_save_image.triggered.connect(self.slot_canvasSaveImage)
self.ui.act_canvas_save_image_2x.triggered.connect(self.slot_canvasSaveImage)
self.ui.act_canvas_save_image_4x.triggered.connect(self.slot_canvasSaveImage)
self.ui.act_canvas_copy_clipboard.triggered.connect(self.slot_canvasCopyToClipboard)
self.ui.act_canvas_arrange.setEnabled(False) # TODO, later
self.ui.graphicsView.horizontalScrollBar().valueChanged.connect(self.slot_horizontalScrollBarChanged)
self.ui.graphicsView.verticalScrollBar().valueChanged.connect(self.slot_verticalScrollBarChanged)
self.ui.miniCanvasPreview.miniCanvasMoved.connect(self.slot_miniCanvasMoved)
self.scene.scaleChanged.connect(self.slot_canvasScaleChanged)
self.scene.pluginSelected.connect(self.slot_canvasPluginSelected)
self.scene.selectionChanged.connect(self.slot_canvasSelectionChanged)
self.SIGUSR1.connect(self.slot_handleSIGUSR1)
self.SIGTERM.connect(self.slot_handleSIGTERM)
host.EngineStartedCallback.connect(self.slot_handleEngineStartedCallback)
host.EngineStoppedCallback.connect(self.slot_handleEngineStoppedCallback)
host.TransportModeChangedCallback.connect(self.slot_handleTransportModeChangedCallback)
host.BufferSizeChangedCallback.connect(self.slot_handleBufferSizeChangedCallback)
host.SampleRateChangedCallback.connect(self.slot_handleSampleRateChangedCallback)
host.CancelableActionCallback.connect(self.slot_handleCancelableActionCallback)
host.ProjectLoadFinishedCallback.connect(self.slot_handleProjectLoadFinishedCallback)
host.PluginAddedCallback.connect(self.slot_handlePluginAddedCallback)
host.PluginRemovedCallback.connect(self.slot_handlePluginRemovedCallback)
host.ReloadAllCallback.connect(self.slot_handleReloadAllCallback)
host.NoteOnCallback.connect(self.slot_handleNoteOnCallback)
host.NoteOffCallback.connect(self.slot_handleNoteOffCallback)
host.UpdateCallback.connect(self.slot_handleUpdateCallback)
if withCanvas:
host.PatchbayClientAddedCallback.connect(self.slot_handlePatchbayClientAddedCallback)
host.PatchbayClientRemovedCallback.connect(self.slot_handlePatchbayClientRemovedCallback)
host.PatchbayClientRenamedCallback.connect(self.slot_handlePatchbayClientRenamedCallback)
host.PatchbayClientDataChangedCallback.connect(self.slot_handlePatchbayClientDataChangedCallback)
host.PatchbayClientPositionChangedCallback.connect(self.slot_handlePatchbayClientPositionChangedCallback)
host.PatchbayPortAddedCallback.connect(self.slot_handlePatchbayPortAddedCallback)
host.PatchbayPortRemovedCallback.connect(self.slot_handlePatchbayPortRemovedCallback)
host.PatchbayPortChangedCallback.connect(self.slot_handlePatchbayPortChangedCallback)
host.PatchbayPortGroupAddedCallback.connect(self.slot_handlePatchbayPortGroupAddedCallback)
host.PatchbayPortGroupRemovedCallback.connect(self.slot_handlePatchbayPortGroupRemovedCallback)
host.PatchbayPortGroupChangedCallback.connect(self.slot_handlePatchbayPortGroupChangedCallback)
host.PatchbayConnectionAddedCallback.connect(self.slot_handlePatchbayConnectionAddedCallback)
host.PatchbayConnectionRemovedCallback.connect(self.slot_handlePatchbayConnectionRemovedCallback)
host.NSMCallback.connect(self.slot_handleNSMCallback)
host.DebugCallback.connect(self.slot_handleDebugCallback)
host.InfoCallback.connect(self.slot_handleInfoCallback)
host.ErrorCallback.connect(self.slot_handleErrorCallback)
host.QuitCallback.connect(self.slot_handleQuitCallback)
host.InlineDisplayRedrawCallback.connect(self.slot_handleInlineDisplayRedrawCallback)
# ----------------------------------------------------------------------------------------------------
# Final setup
self.ui.text_logs.clear()
self.slot_logButtonsState(False)
self.setProperWindowTitle()
# Disable non-supported features
features = gCarla.utils.get_supported_features()
if "link" not in features:
self.ui.cb_transport_link.setEnabled(False)
self.ui.cb_transport_link.setVisible(False)
if "juce" not in features:
self.ui.act_help_about_juce.setEnabled(False)
self.ui.act_help_about_juce.setVisible(False)
# Plugin needs to have timers always running so it receives messages
if self.host.isPlugin or self.host.isRemote:
self.startTimers()
# Qt needs this so it properly creates & resizes the canvas
self.ui.tabWidget.blockSignals(True)
self.ui.tabWidget.setCurrentIndex(1)
self.ui.tabWidget.setCurrentIndex(0)
self.ui.tabWidget.blockSignals(False)
# Start in patchbay tab if using forced patchbay mode
if host.processModeForced and host.processMode == ENGINE_PROCESS_MODE_PATCHBAY:
self.ui.tabWidget.setCurrentIndex(1)
# Load initial project file if set
if not (self.host.isControl or self.host.isPlugin):
projectFile = getInitialProjectFile(QApplication.instance())
if projectFile:
self.loadProjectLater(projectFile)
# For NSM we wait for the open message
if NSM_URL and host.nsmOK:
host.nsm_ready(NSM_CALLBACK_INIT)
return
if not host.isControl:
QTimer.singleShot(0, self.slot_engineStart)
# --------------------------------------------------------------------------------------------------------
# Manage visibility state, needed for NSM
def hideForNSM(self):
for pitem in reversed(self.fPluginList):
if pitem is None:
continue
pitem.getWidget().hideCustomUI()
self.hide()
def showIfNeeded(self):
if self.host.nsmOK:
self.ui.act_file_quit.setText(self.tr("Hide"))
QApplication.instance().setQuitOnLastWindowClosed(False)
else:
self.show()
# --------------------------------------------------------------------------------------------------------
# Setup
def compactPlugin(self, pluginId):
if pluginId > self.fPluginCount:
return
pitem = self.fPluginList[pluginId]
if pitem is None:
return
pitem.recreateWidget(True)
def changePluginColor(self, pluginId, color, colorStr):
if pluginId > self.fPluginCount:
return
pitem = self.fPluginList[pluginId]
if pitem is None:
return
self.host.set_custom_data(pluginId, CUSTOM_DATA_TYPE_PROPERTY, "CarlaColor", colorStr)
pitem.recreateWidget(newColor = color)
def changePluginSkin(self, pluginId, skin):
if pluginId > self.fPluginCount:
return
pitem = self.fPluginList[pluginId]
if pitem is None:
return
self.host.set_custom_data(pluginId, CUSTOM_DATA_TYPE_PROPERTY, "CarlaSkin", skin)
if skin not in ("default","rncbc","presets","mpresets"):
pitem.recreateWidget(newSkin = skin, newColor = (255,255,255))
else:
pitem.recreateWidget(newSkin = skin)
def findPluginInPatchbay(self, pluginId):
if pluginId > self.fPluginCount:
return
if self.fExternalPatchbay:
self.slot_canvasShowInternal()
if not patchcanvas.focusGroupUsingPluginId(pluginId):
name = self.host.get_plugin_info(pluginId)['name']
if not patchcanvas.focusGroupUsingGroupName(name):
return
self.ui.tabWidget.setCurrentIndex(1)
def switchPlugins(self, pluginIdA, pluginIdB):
if pluginIdA == pluginIdB:
return
if pluginIdA < 0 or pluginIdB < 0:
return
if pluginIdA >= self.fPluginCount or pluginIdB >= self.fPluginCount:
return
self.host.switch_plugins(pluginIdA, pluginIdB)
itemA = self.fPluginList[pluginIdA]
compactA = itemA.isCompacted()
guiShownA = itemA.isGuiShown()
itemB = self.fPluginList[pluginIdB]
compactB = itemB.isCompacted()
guiShownB = itemB.isGuiShown()
itemA.setPluginId(pluginIdA)
itemA.recreateWidget2(compactB, guiShownB)
itemB.setPluginId(pluginIdB)
itemB.recreateWidget2(compactA, guiShownA)
if self.fWithCanvas:
self.slot_canvasRefresh()
def setLoadRDFsNeeded(self):
self.fLadspaRdfNeedsUpdate = True
def setProperWindowTitle(self):
title = self.fClientName
if self.fProjectFilename and not self.host.nsmOK:
title += " - %s" % os.path.basename(self.fProjectFilename)
if self.fSessionManagerName:
title += " (%s)" % self.fSessionManagerName
self.setWindowTitle(title)
def updateBufferSize(self, newBufferSize):
if self.fBufferSize == newBufferSize:
return
self.fBufferSize = newBufferSize
self.ui.cb_buffer_size.clear()
self.ui.cb_buffer_size.addItem(str(newBufferSize))
self.ui.cb_buffer_size.setCurrentIndex(0)
def updateSampleRate(self, newSampleRate):
if self.fSampleRate == newSampleRate:
return
self.fSampleRate = newSampleRate
self.ui.cb_sample_rate.clear()
self.ui.cb_sample_rate.addItem(str(newSampleRate))
self.ui.cb_sample_rate.setCurrentIndex(0)
self.refreshTransport(True)
# --------------------------------------------------------------------------------------------------------
# Files
def loadProjectNow(self):
if not self.fProjectFilename:
return qCritical("ERROR: loading project without filename set")
if self.host.nsmOK and not os.path.exists(self.fProjectFilename):
return
self.projectLoadingStarted()
self.fIsProjectLoading = True
if not self.host.load_project(self.fProjectFilename):
self.fIsProjectLoading = False
self.projectLoadingFinished(True)
CustomMessageBox(self, QMessageBox.Critical, self.tr("Error"), self.tr("Failed to load project"),
self.host.get_last_error(),
QMessageBox.Ok, QMessageBox.Ok)
def loadProjectLater(self, filename):
self.fProjectFilename = QFileInfo(filename).absoluteFilePath()
self.setProperWindowTitle()
QTimer.singleShot(1, self.slot_loadProjectNow)
def saveProjectNow(self):
if not self.fProjectFilename:
return qCritical("ERROR: saving project without filename set")
if not self.host.save_project(self.fProjectFilename):
CustomMessageBox(self, QMessageBox.Critical, self.tr("Error"), self.tr("Failed to save project"),
self.host.get_last_error(),
QMessageBox.Ok, QMessageBox.Ok)
return
def projectLoadingStarted(self):
self.ui.rack.setEnabled(False)
self.ui.graphicsView.setEnabled(False)
def projectLoadingFinished(self, refreshCanvas):
self.ui.rack.setEnabled(True)
self.ui.graphicsView.setEnabled(True)
if self.fCustomStopAction == self.CUSTOM_ACTION_APP_CLOSE or not self.fWithCanvas:
return
if refreshCanvas and not self.loadExternalCanvasGroupPositionsIfNeeded(self.fProjectFilename):
QTimer.singleShot(1, self.slot_canvasRefresh)
def loadExternalCanvasGroupPositionsIfNeeded(self, filename):
extrafile = filename.rsplit(".",1)[0]+".json"
if not os.path.exists(extrafile):
return False
with open(filename, "r") as fh:
if "".join(fh.readlines(90)).find("<CARLA-PROJECT VERSION='2.0'>") < 0:
return False
with open(extrafile, "r") as fh:
try:
canvasdata = json.load(fh)['canvas']
except:
return False
print("NOTICE: loading old-style canvas group positions via legacy json file")
patchcanvas.restoreGroupPositions(canvasdata)
QTimer.singleShot(1, self.slot_canvasRefresh)
return True
# --------------------------------------------------------------------------------------------------------
# Files (menu actions)
@pyqtSlot()
def slot_fileNew(self):
if self.fPluginCount > 0 and QMessageBox.question(self, self.tr("New File"),
self.tr("Plugins that are currently loaded will be removed. Are you sure?"),
QMessageBox.Yes|QMessageBox.No) == QMessageBox.No:
return
self.pluginRemoveAll()
self.fProjectFilename = ""
self.setProperWindowTitle()
self.host.clear_project_filename()
@pyqtSlot()
def slot_fileOpen(self):
fileFilter = self.tr("Carla Project File (*.carxp);;Carla Preset File (*.carxs)")
filename, ok = QFileDialog.getOpenFileName(self, self.tr("Open Carla Project File"), self.fSavedSettings[CARLA_KEY_MAIN_PROJECT_FOLDER], filter=fileFilter)
# FIXME use ok value, test if it works as expected
if not filename:
return
newFile = True
if self.fPluginCount > 0:
ask = QMessageBox.question(self, self.tr("Question"), self.tr("There are some plugins loaded, do you want to remove them now?"),
QMessageBox.Yes | QMessageBox.No, QMessageBox.No)
newFile = (ask == QMessageBox.Yes)
if newFile:
self.pluginRemoveAll()
self.fProjectFilename = filename
self.setProperWindowTitle()
self.loadProjectNow()
else:
filenameOld = self.fProjectFilename
self.fProjectFilename = filename
self.loadProjectNow()
self.fProjectFilename = filenameOld
@pyqtSlot()
def slot_fileSave(self, saveAs=False):
if self.fProjectFilename and not saveAs:
return self.saveProjectNow()
fileFilter = self.tr("Carla Project File (*.carxp)")
filename, ok = QFileDialog.getSaveFileName(self, self.tr("Save Carla Project File"), self.fSavedSettings[CARLA_KEY_MAIN_PROJECT_FOLDER], filter=fileFilter)
# FIXME use ok value, test if it works as expected
if not filename:
return
if not filename.lower().endswith(".carxp"):
filename += ".carxp"
if self.fProjectFilename != filename:
self.fProjectFilename = filename
self.setProperWindowTitle()
self.saveProjectNow()
@pyqtSlot()
def slot_fileSaveAs(self):
self.slot_fileSave(True)
@pyqtSlot()
def slot_loadProjectNow(self):
self.loadProjectNow()
# --------------------------------------------------------------------------------------------------------
# Engine (menu actions)
@pyqtSlot()
def slot_engineStart(self):
audioDriver = setEngineSettings(self.host, self.fSavedSettings)
firstInit = self.fFirstEngineInit
self.fFirstEngineInit = False
self.ui.text_logs.appendPlainText("======= Starting engine =======")
if self.host.engine_init(audioDriver, self.fClientName):
if firstInit and not (self.host.isControl or self.host.isPlugin):
settings = QSafeSettings()
lastBpm = settings.value("LastBPM", 120.0, float)
del settings
if lastBpm >= 20.0:
self.host.transport_bpm(lastBpm)
return
elif firstInit:
self.ui.text_logs.appendPlainText("Failed to start engine on first try, ignored")
return
audioError = self.host.get_last_error()
if audioError:
QMessageBox.critical(self, self.tr("Error"),
self.tr("Could not connect to Audio backend '%s', possible reasons:\n%s" % (audioDriver, audioError)))
else:
QMessageBox.critical(self, self.tr("Error"),
self.tr("Could not connect to Audio backend '%s'" % audioDriver))
@pyqtSlot()
def slot_engineStop(self, forced = False):
self.ui.text_logs.appendPlainText("======= Stopping engine =======")
if self.fPluginCount == 0 or not self.host.is_engine_running():
self.engineStopFinal()
return True
if not forced:
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"
"Do you want to do this now?"),
QMessageBox.Yes | QMessageBox.No, QMessageBox.No)
if ask != QMessageBox.Yes:
return False
return self.slot_engineStopTryAgain()
@pyqtSlot()
def slot_engineConfig(self):
engineRunning = self.host.is_engine_running()
if engineRunning:
dialog = RuntimeDriverSettingsW(self.fParentOrSelf, self.host)
else:
if self.host.isPlugin:
driverName = "Plugin"
driverIndex = 0
elif self.host.audioDriverForced:
driverName = self.host.audioDriverForced
driverIndex = 0
else:
settings = QSafeSettings()
driverName = settings.value(CARLA_KEY_ENGINE_AUDIO_DRIVER, CARLA_DEFAULT_AUDIO_DRIVER, str)
for i in range(self.host.get_engine_driver_count()):
if self.host.get_engine_driver_name(i) == driverName:
driverIndex = i
break