jack_mixer.py

   1 #!/usr/bin/env python3
   2 # -*- coding: utf-8 -*-
   3 #
   4 # This file is part of jack_mixer
   5 #
   6 # Copyright (C) 2006-2009 Nedko Arnaudov <nedko@arnaudov.name>
   7 # Copyright (C) 2009 Frederic Peters <fpeters@0d.be>
   8 #
   9 # This program is free software; you can redistribute it and/or modify
  10 # it under the terms of the GNU General Public License as published by
  11 # the Free Software Foundation; version 2 of the License
  12 #
  13 # This program is distributed in the hope that it will be useful,
  14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 # GNU General Public License for more details.
  17 #
  18 # You should have received a copy of the GNU General Public License
  19 # along with this program; if not, write to the Free Software
  20 # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  21
  22 import logging
  23 import os
  24 import signal
  25 import sys
  26 from argparse import ArgumentParser
  27
  28 import gi
  29 gi.require_version('Gtk', '3.0')
  30 from gi.repository import Gtk
  31 from gi.repository import GObject
  32 from gi.repository import GLib
  33
  34 # temporary change Python modules lookup path to look into installation
  35 # directory ($prefix/share/jack_mixer/)
  36 old_path = sys.path
  37 sys.path.insert(0, os.path.join(os.path.dirname(sys.argv[0]), '..', 'share', 'jack_mixer'))
  38
  39 import jack_mixer_c
  40
  41 import gui
  42 import scale
  43 from channel import *
  44 from nsmclient import NSMClient
  45 from serialization_xml import XmlSerialization
  46 from serialization import SerializedObject, Serializator
  47 from preferences import PreferencesDialog
  48
  49 # restore Python modules lookup path
  50 sys.path = old_path
  51 log = logging.getLogger("jack_mixer")
  52
  53
  54 class JackMixer(SerializedObject):
  55
  56     # scales suitable as meter scales
  57     meter_scales = [scale.IEC268(), scale.Linear70dB(), scale.IEC268Minimalistic()]
  58
  59     # scales suitable as volume slider scales
  60     slider_scales = [scale.Linear30dB(), scale.Linear70dB()]
  61
  62     # name of settngs file that is currently open
  63     current_filename = None
  64
  65     _init_solo_channels = None
  66
  67     def __init__(self, client_name='jack_mixer'):
  68         self.visible = False
  69         self.nsm_client = None
  70
  71         if os.environ.get('NSM_URL'):
  72             self.nsm_client = NSMClient(prettyName = "jack_mixer",
  73                                         saveCallback = self.nsm_save_cb,
  74                                         openOrNewCallback = self.nsm_open_cb,
  75                                         supportsSaveStatus = False,
  76                                         hideGUICallback = self.nsm_hide_cb,
  77                                         showGUICallback = self.nsm_show_cb,
  78                                         exitProgramCallback = self.nsm_exit_cb,
  79                                         loggingLevel = "error",
  80                                        )
  81             self.nsm_client.announceGuiVisibility(self.visible)
  82         else:
  83
  84             self.visible = True
  85             self.create_mixer(client_name, with_nsm = False)
  86
  87     def create_mixer(self, client_name, with_nsm = True):
  88         self.create_ui(with_nsm)
  89         self.mixer = jack_mixer_c.Mixer(client_name)
  90         if not self.mixer:
  91             sys.exit(1)
  92
  93         self.window.set_title(client_name)
  94
  95         self.monitor_channel = self.mixer.add_output_channel("Monitor", True, True)
  96         self.save = False
  97
  98         GLib.timeout_add(80, self.read_meters)
  99         if with_nsm:
 100             GLib.timeout_add(200, self.nsm_react)
 101         GLib.timeout_add(50, self.midi_events_check)
 102
 103     def new_menu_item(self, title, callback=None, accel=None, enabled=True):
 104         menuitem = Gtk.MenuItem.new_with_mnemonic(title)
 105         menuitem.set_sensitive(enabled)
 106         if callback:
 107             menuitem.connect("activate", callback)
 108         if accel:
 109             key, mod = Gtk.accelerator_parse(accel)
 110             menuitem.add_accelerator("activate", self.menu_accelgroup, key, mod,
 111                                      Gtk.AccelFlags.VISIBLE)
 112         return menuitem
 113
 114     def create_ui(self, with_nsm):
 115         self.channels = []
 116         self.output_channels = []
 117         self.window = Gtk.Window(type=Gtk.WindowType.TOPLEVEL)
 118         self.window.set_icon_name('jack_mixer')
 119         self.gui_factory = gui.Factory(self.window, self.meter_scales, self.slider_scales)
 120         self.gui_factory.connect('midi-behavior-mode-changed', self.on_midi_behavior_mode_changed)
 121         self.vbox_top = Gtk.VBox()
 122         self.window.add(self.vbox_top)
 123
 124         self.menu_accelgroup = Gtk.AccelGroup()
 125         self.window.add_accel_group(self.menu_accelgroup)
 126
 127         self.menubar = Gtk.MenuBar()
 128         self.vbox_top.pack_start(self.menubar, False, True, 0)
 129
 130         mixer_menu_item = Gtk.MenuItem.new_with_mnemonic("_Mixer")
 131         self.menubar.append(mixer_menu_item)
 132         edit_menu_item = Gtk.MenuItem.new_with_mnemonic('_Edit')
 133         self.menubar.append(edit_menu_item)
 134         help_menu_item = Gtk.MenuItem.new_with_mnemonic('_Help')
 135         self.menubar.append(help_menu_item)
 136
 137         self.window.set_default_size(420, 420)
 138
 139         self.mixer_menu = Gtk.Menu()
 140         mixer_menu_item.set_submenu(self.mixer_menu)
 141
 142         self.mixer_menu.append(self.new_menu_item('New _Input Channel',
 143                                                   self.on_add_input_channel, "<Control>N"))
 144         self.mixer_menu.append(self.new_menu_item('New Output _Channel',
 145                                                   self.on_add_output_channel, "<Shift><Control>N"))
 146
 147         self.mixer_menu.append(Gtk.SeparatorMenuItem())
 148         if not with_nsm:
 149             self.mixer_menu.append(self.new_menu_item('_Open...', self.on_open_cb, "<Control>O"))
 150
 151         self.mixer_menu.append(self.new_menu_item('_Save', self.on_save_cb, "<Control>S"))
 152
 153         if not with_nsm:
 154             self.mixer_menu.append(self.new_menu_item('Save _As...', self.on_save_as_cb,
 155                                                       "<Shift><Control>S"))
 156
 157         self.mixer_menu.append(Gtk.SeparatorMenuItem())
 158         self.mixer_menu.append(self.new_menu_item('_Quit', self.on_quit_cb, "<Control>Q"))
 159
 160         edit_menu = Gtk.Menu()
 161         edit_menu_item.set_submenu(edit_menu)
 162
 163         self.channel_edit_input_menu_item = self.new_menu_item('_Edit Input Channel',
 164                                                                enabled=False)
 165         edit_menu.append(self.channel_edit_input_menu_item)
 166         self.channel_edit_input_menu = Gtk.Menu()
 167         self.channel_edit_input_menu_item.set_submenu(self.channel_edit_input_menu)
 168
 169         self.channel_edit_output_menu_item = self.new_menu_item('E_dit Output Channel',
 170                                                                 enabled=False)
 171         edit_menu.append(self.channel_edit_output_menu_item)
 172         self.channel_edit_output_menu = Gtk.Menu()
 173         self.channel_edit_output_menu_item.set_submenu(self.channel_edit_output_menu)
 174
 175         self.channel_remove_input_menu_item = self.new_menu_item('_Remove Input Channel',
 176                                                                  enabled=False)
 177         edit_menu.append(self.channel_remove_input_menu_item)
 178         self.channel_remove_input_menu = Gtk.Menu()
 179         self.channel_remove_input_menu_item.set_submenu(self.channel_remove_input_menu)
 180
 181         self.channel_remove_output_menu_item = self.new_menu_item('Re_move Output Channel',
 182                                                                   enabled=False)
 183         edit_menu.append(self.channel_remove_output_menu_item)
 184         self.channel_remove_output_menu = Gtk.Menu()
 185         self.channel_remove_output_menu_item.set_submenu(self.channel_remove_output_menu)
 186
 187         edit_menu.append(self.new_menu_item('_Clear', self.on_channels_clear, "<Control>X"))
 188         edit_menu.append(Gtk.SeparatorMenuItem())
 189         edit_menu.append(self.new_menu_item('_Preferences', self.on_preferences_cb, "<Control>P"))
 190
 191         help_menu = Gtk.Menu()
 192         help_menu_item.set_submenu(help_menu)
 193
 194         help_menu.append(self.new_menu_item('_About', self.on_about, "F1"))
 195
 196         self.hbox_top = Gtk.HBox()
 197         self.vbox_top.pack_start(self.hbox_top, True, True, 0)
 198
 199         self.scrolled_window = Gtk.ScrolledWindow()
 200         self.scrolled_window.set_policy(Gtk.PolicyType.AUTOMATIC, Gtk.PolicyType.AUTOMATIC)
 201
 202         self.hbox_inputs = Gtk.Box()
 203         self.hbox_inputs.set_spacing(0)
 204         self.hbox_inputs.set_border_width(0)
 205         self.hbox_top.set_spacing(0)
 206         self.hbox_top.set_border_width(0)
 207         self.scrolled_window.add(self.hbox_inputs)
 208         self.hbox_outputs = Gtk.Box()
 209         self.hbox_outputs.set_spacing(0)
 210         self.hbox_outputs.set_border_width(0)
 211         self.scrolled_output = Gtk.ScrolledWindow()
 212         self.scrolled_output.set_policy(Gtk.PolicyType.AUTOMATIC, Gtk.PolicyType.AUTOMATIC)
 213         self.scrolled_output.add(self.hbox_outputs)
 214         self.paned = Gtk.HPaned()
 215         self.paned.set_wide_handle(True)
 216         self.hbox_top.pack_start(self.paned, True, True, 0)
 217         self.paned.pack1(self.scrolled_window, True, False)
 218         self.paned.pack2(self.scrolled_output, True, False)
 219
 220         self.window.connect("destroy", Gtk.main_quit)
 221
 222         self.window.connect('delete-event', self.on_delete_event)
 223
 224     def nsm_react(self):
 225         self.nsm_client.reactToMessage()
 226         return True
 227
 228     def nsm_hide_cb(self):
 229         self.window.hide()
 230         self.visible = False
 231         self.nsm_client.announceGuiVisibility(False)
 232
 233     def nsm_show_cb(self):
 234         self.window.show_all()
 235         self.visible = True
 236         self.nsm_client.announceGuiVisibility(True)
 237
 238     def nsm_open_cb(self, path, session_name, client_name):
 239         self.create_mixer(client_name, with_nsm = True)
 240         self.current_filename = path + '.xml'
 241         if os.path.isfile(self.current_filename):
 242             f = open(self.current_filename, 'r')
 243             self.load_from_xml(f)
 244             f.close()
 245         else:
 246             f = open(self.current_filename, 'w')
 247             f.close()
 248
 249     def nsm_save_cb(self, path, session_name, client_name):
 250         self.current_filename = path + '.xml'
 251         f = open(self.current_filename, 'w')
 252         self.save_to_xml(f)
 253         f.close()
 254
 255     def nsm_exit_cb(self, path, session_name, client_name):
 256         Gtk.main_quit()
 257
 258     def on_midi_behavior_mode_changed(self, gui_factory, value):
 259         self.mixer.midi_behavior_mode = value
 260
 261     def on_delete_event(self, widget, event):
 262         return False
 263
 264     def sighandler(self, signum, frame):
 265         log.debug("Signal %d received.", signum)
 266         if signum == signal.SIGUSR1:
 267             self.save = True
 268         elif signum == signal.SIGTERM:
 269             Gtk.main_quit()
 270         elif signum == signal.SIGINT:
 271             Gtk.main_quit()
 272         else:
 273             log.warning("Unknown signal %d received.", signum)
 274
 275     def cleanup(self):
 276         log.debug("Cleaning jack_mixer.")
 277         if not self.mixer:
 278             return
 279
 280         for channel in self.channels:
 281             channel.unrealize()
 282
 283         self.mixer.destroy()
 284
 285     def on_open_cb(self, *args):
 286         dlg = Gtk.FileChooserDialog(title='Open', parent=self.window,
 287                         action=Gtk.FileChooserAction.OPEN)
 288         dlg.add_buttons(Gtk.STOCK_CANCEL, Gtk.ResponseType.CANCEL,
 289                         Gtk.STOCK_OPEN, Gtk.ResponseType.OK)
 290         dlg.set_default_response(Gtk.ResponseType.OK)
 291         if dlg.run() == Gtk.ResponseType.OK:
 292             filename = dlg.get_filename()
 293             try:
 294                 f = open(filename, 'r')
 295                 self.load_from_xml(f)
 296             except Exception as e:
 297                 error_dialog(self.window, "Failed loading settings (%s)", e)
 298             else:
 299                 self.current_filename = filename
 300             finally:
 301                 f.close()
 302         dlg.destroy()
 303
 304     def on_save_cb(self, *args):
 305         if not self.current_filename:
 306             return self.on_save_as_cb()
 307         f = open(self.current_filename, 'w')
 308         self.save_to_xml(f)
 309         f.close()
 310
 311     def on_save_as_cb(self, *args):
 312         dlg = Gtk.FileChooserDialog(title='Save', parent=self.window,
 313                         action=Gtk.FileChooserAction.SAVE)
 314         dlg.add_buttons(Gtk.STOCK_CANCEL, Gtk.ResponseType.CANCEL,
 315                         Gtk.STOCK_SAVE, Gtk.ResponseType.OK)
 316         dlg.set_default_response(Gtk.ResponseType.OK)
 317         if dlg.run() == Gtk.ResponseType.OK:
 318             self.current_filename = dlg.get_filename()
 319             self.on_save_cb()
 320         dlg.destroy()
 321
 322     def on_quit_cb(self, *args):
 323         Gtk.main_quit()
 324
 325     preferences_dialog = None
 326     def on_preferences_cb(self, widget):
 327         if not self.preferences_dialog:
 328             self.preferences_dialog = PreferencesDialog(self)
 329         self.preferences_dialog.show()
 330         self.preferences_dialog.present()
 331
 332     def on_add_input_channel(self, widget):
 333         dialog = NewInputChannelDialog(app=self)
 334         dialog.set_transient_for(self.window)
 335         dialog.show()
 336         ret = dialog.run()
 337         dialog.hide()
 338
 339         if ret == Gtk.ResponseType.OK:
 340             result = dialog.get_result()
 341             channel = self.add_channel(**result)
 342             if self.visible:
 343                 self.window.show_all()
 344
 345     def on_add_output_channel(self, widget):
 346         dialog = NewOutputChannelDialog(app=self)
 347         dialog.set_transient_for(self.window)
 348         dialog.show()
 349         ret = dialog.run()
 350         dialog.hide()
 351
 352         if ret == Gtk.ResponseType.OK:
 353             result = dialog.get_result()
 354             channel = self.add_output_channel(**result)
 355             if self.visible:
 356                 self.window.show_all()
 357
 358     def on_edit_input_channel(self, widget, channel):
 359         log.debug('Editing input channel "%s".', channel.channel_name)
 360         channel.on_channel_properties()
 361
 362     def remove_channel_edit_input_menuitem_by_label(self, widget, label):
 363         if (widget.get_label() == label):
 364             self.channel_edit_input_menu.remove(widget)
 365
 366     def on_remove_input_channel(self, widget, channel):
 367         log.debug('Removing input channel "%s".', channel.channel_name)
 368         self.channel_remove_input_menu.remove(widget)
 369         self.channel_edit_input_menu.foreach(
 370             self.remove_channel_edit_input_menuitem_by_label,
 371             channel.channel_name);
 372         if self.monitored_channel is channel:
 373             channel.monitor_button.set_active(False)
 374         for i in range(len(self.channels)):
 375             if self.channels[i] is channel:
 376                 channel.unrealize()
 377                 del self.channels[i]
 378                 self.hbox_inputs.remove(channel.get_parent())
 379                 break
 380         if not self.channels:
 381             self.channel_edit_input_menu_item.set_sensitive(False)
 382             self.channel_remove_input_menu_item.set_sensitive(False)
 383
 384     def on_edit_output_channel(self, widget, channel):
 385         log.debug('Editing output channel "%s".', channel.channel_name)
 386         channel.on_channel_properties()
 387
 388     def remove_channel_edit_output_menuitem_by_label(self, widget, label):
 389         if (widget.get_label() == label):
 390             self.channel_edit_output_menu.remove(widget)
 391
 392     def on_remove_output_channel(self, widget, channel):
 393         log.debug('Removing output channel "%s".', channel.channel_name)
 394         self.channel_remove_output_menu.remove(widget)
 395         self.channel_edit_output_menu.foreach(
 396             self.remove_channel_edit_output_menuitem_by_label,
 397             channel.channel_name);
 398         if self.monitored_channel is channel:
 399             channel.monitor_button.set_active(False)
 400         for i in range(len(self.channels)):
 401             if self.output_channels[i] is channel:
 402                 channel.unrealize()
 403                 del self.output_channels[i]
 404                 self.hbox_outputs.remove(channel.get_parent())
 405                 break
 406         if not self.output_channels:
 407             self.channel_edit_output_menu_item.set_sensitive(False)
 408             self.channel_remove_output_menu_item.set_sensitive(False)
 409
 410     def rename_channels(self, container, parameters):
 411         if (container.get_label() == parameters['oldname']):
 412             container.set_label(parameters['newname'])
 413
 414     def on_channel_rename(self, oldname, newname):
 415         rename_parameters = { 'oldname' : oldname, 'newname' : newname }
 416         self.channel_edit_input_menu.foreach(self.rename_channels,
 417             rename_parameters)
 418         self.channel_edit_output_menu.foreach(self.rename_channels,
 419             rename_parameters)
 420         self.channel_remove_input_menu.foreach(self.rename_channels,
 421             rename_parameters)
 422         self.channel_remove_output_menu.foreach(self.rename_channels,
 423             rename_parameters)
 424         log.debug('Renaming channel from "%s" to "%s".', oldname, newname)
 425
 426     def on_channels_clear(self, widget):
 427         dlg = Gtk.MessageDialog(parent = self.window,
 428                 modal = True,
 429                 message_type = Gtk.MessageType.WARNING,
 430                 text = "Are you sure you want to clear all channels?",
 431                 buttons = Gtk.ButtonsType.OK_CANCEL)
 432         if not widget or dlg.run() == Gtk.ResponseType.OK:
 433             for channel in self.output_channels:
 434                 channel.unrealize()
 435                 self.hbox_outputs.remove(channel.get_parent())
 436             for channel in self.channels:
 437                 channel.unrealize()
 438                 self.hbox_inputs.remove(channel.get_parent())
 439             self.channels = []
 440             self.output_channels = []
 441             self.channel_edit_input_menu = Gtk.Menu()
 442             self.channel_edit_input_menu_item.set_submenu(self.channel_edit_input_menu)
 443             self.channel_edit_input_menu_item.set_sensitive(False)
 444             self.channel_remove_input_menu = Gtk.Menu()
 445             self.channel_remove_input_menu_item.set_submenu(self.channel_remove_input_menu)
 446             self.channel_remove_input_menu_item.set_sensitive(False)
 447             self.channel_edit_output_menu = Gtk.Menu()
 448             self.channel_edit_output_menu_item.set_submenu(self.channel_edit_output_menu)
 449             self.channel_edit_output_menu_item.set_sensitive(False)
 450             self.channel_remove_output_menu = Gtk.Menu()
 451             self.channel_remove_output_menu_item.set_submenu(self.channel_remove_output_menu)
 452             self.channel_remove_output_menu_item.set_sensitive(False)
 453         dlg.destroy()
 454
 455     def add_channel(self, name, stereo, volume_cc, balance_cc, mute_cc, solo_cc, value):
 456         try:
 457             channel = InputChannel(self, name, stereo, value)
 458             self.add_channel_precreated(channel)
 459         except Exception:
 460             error_dialog(self.window, "Channel creation failed.")
 461             return
 462         if volume_cc != -1:
 463             channel.channel.volume_midi_cc = volume_cc
 464         else:
 465             channel.channel.autoset_volume_midi_cc()
 466         if balance_cc != -1:
 467             channel.channel.balance_midi_cc = balance_cc
 468         else:
 469             channel.channel.autoset_balance_midi_cc()
 470         if mute_cc != -1:
 471             channel.channel.mute_midi_cc = mute_cc
 472         else:
 473             channel.channel.autoset_mute_midi_cc()
 474         if solo_cc != -1:
 475             channel.channel.solo_midi_cc = solo_cc
 476         else:
 477             channel.channel.autoset_solo_midi_cc()
 478         return channel
 479
 480     def add_channel_precreated(self, channel):
 481         frame = Gtk.Frame()
 482         frame.add(channel)
 483         self.hbox_inputs.pack_start(frame, False, True, 0)
 484         channel.realize()
 485
 486         channel_edit_menu_item = Gtk.MenuItem(label=channel.channel_name)
 487         self.channel_edit_input_menu.append(channel_edit_menu_item)
 488         channel_edit_menu_item.connect("activate", self.on_edit_input_channel, channel)
 489         self.channel_edit_input_menu_item.set_sensitive(True)
 490
 491         channel_remove_menu_item = Gtk.MenuItem(label=channel.channel_name)
 492         self.channel_remove_input_menu.append(channel_remove_menu_item)
 493         channel_remove_menu_item.connect("activate", self.on_remove_input_channel, channel)
 494         self.channel_remove_input_menu_item.set_sensitive(True)
 495
 496         self.channels.append(channel)
 497
 498         for outputchannel in self.output_channels:
 499             channel.add_control_group(outputchannel)
 500
 501         # create post fader output channel matching the input channel
 502         channel.post_fader_output_channel = self.mixer.add_output_channel(
 503                         channel.channel.name + ' Out', channel.channel.is_stereo, True)
 504         channel.post_fader_output_channel.volume = 0
 505         channel.post_fader_output_channel.set_solo(channel.channel, True)
 506
 507     def read_meters(self):
 508         for channel in self.channels:
 509             channel.read_meter()
 510         for channel in self.output_channels:
 511             channel.read_meter()
 512         return True
 513
 514     def midi_events_check(self):
 515         for channel in self.channels + self.output_channels:
 516             channel.midi_events_check()
 517         return True
 518
 519     def add_output_channel(self, name, stereo, volume_cc, balance_cc, mute_cc,
 520             display_solo_buttons, color, value):
 521         try:
 522             channel = OutputChannel(self, name, stereo, value)
 523             channel.display_solo_buttons = display_solo_buttons
 524             channel.color = color
 525             self.add_output_channel_precreated(channel)
 526         except Exception:
 527             error_dialog(self.window, "Channel creation failed")
 528             return
 529
 530         if volume_cc != -1:
 531             channel.channel.volume_midi_cc = volume_cc
 532         else:
 533             channel.channel.autoset_volume_midi_cc()
 534         if balance_cc != -1:
 535             channel.channel.balance_midi_cc = balance_cc
 536         else:
 537             channel.channel.autoset_balance_midi_cc()
 538         if mute_cc != -1:
 539             channel.channel.mute_midi_cc = mute_cc
 540         else:
 541             channel.channel.autoset_mute_midi_cc()
 542
 543         return channel
 544
 545     def add_output_channel_precreated(self, channel):
 546         frame = Gtk.Frame()
 547         frame.add(channel)
 548         self.hbox_outputs.pack_end(frame, False, True, 0)
 549         self.hbox_outputs.reorder_child(frame, 0)
 550         channel.realize()
 551
 552         channel_edit_menu_item = Gtk.MenuItem(label=channel.channel_name)
 553         self.channel_edit_output_menu.append(channel_edit_menu_item)
 554         channel_edit_menu_item.connect("activate", self.on_edit_output_channel, channel)
 555         self.channel_edit_output_menu_item.set_sensitive(True)
 556
 557         channel_remove_menu_item = Gtk.MenuItem(label=channel.channel_name)
 558         self.channel_remove_output_menu.append(channel_remove_menu_item)
 559         channel_remove_menu_item.connect("activate", self.on_remove_output_channel, channel)
 560         self.channel_remove_output_menu_item.set_sensitive(True)
 561
 562         self.output_channels.append(channel)
 563
 564     _monitored_channel = None
 565     def get_monitored_channel(self):
 566         return self._monitored_channel
 567
 568     def set_monitored_channel(self, channel):
 569         if self._monitored_channel:
 570             if channel.channel.name == self._monitored_channel.channel.name:
 571                 return
 572         self._monitored_channel = channel
 573         if type(channel) is InputChannel:
 574             # reset all solo/mute settings
 575             for in_channel in self.channels:
 576                 self.monitor_channel.set_solo(in_channel.channel, False)
 577                 self.monitor_channel.set_muted(in_channel.channel, False)
 578             self.monitor_channel.set_solo(channel.channel, True)
 579             self.monitor_channel.prefader = True
 580         else:
 581             self.monitor_channel.prefader = False
 582         self.update_monitor(channel)
 583     monitored_channel = property(get_monitored_channel, set_monitored_channel)
 584
 585     def update_monitor(self, channel):
 586         if self.monitored_channel is not channel:
 587             return
 588         self.monitor_channel.volume = channel.channel.volume
 589         self.monitor_channel.balance = channel.channel.balance
 590         self.monitor_channel.out_mute = channel.channel.out_mute
 591         if type(self.monitored_channel) is OutputChannel:
 592             # sync solo/muted channels
 593             for input_channel in self.channels:
 594                 self.monitor_channel.set_solo(input_channel.channel,
 595                                 channel.channel.is_solo(input_channel.channel))
 596                 self.monitor_channel.set_muted(input_channel.channel,
 597                                 channel.channel.is_muted(input_channel.channel))
 598
 599     def get_input_channel_by_name(self, name):
 600         for input_channel in self.channels:
 601             if input_channel.channel.name == name:
 602                 return input_channel
 603         return None
 604
 605     def on_about(self, *args):
 606         about = Gtk.AboutDialog()
 607         about.set_name('jack_mixer')
 608         about.set_copyright('Copyright © 2006-2020\nNedko Arnaudov, Frédéric Péters, Arnout Engelen, Daniel Sheeler')
 609         about.set_license('''\
 610 jack_mixer is free software; you can redistribute it and/or modify it
 611 under the terms of the GNU General Public License as published by the
 612 Free Software Foundation; either version 2 of the License, or (at your
 613 option) any later version.
 614
 615 jack_mixer is distributed in the hope that it will be useful, but
 616 WITHOUT ANY WARRANTY; without even the implied warranty of
 617 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 618 General Public License for more details.
 619
 620 You should have received a copy of the GNU General Public License along
 621 with jack_mixer; if not, write to the Free Software Foundation, Inc., 51
 622 Franklin Street, Fifth Floor, Boston, MA 02110-130159 USA''')
 623         about.set_authors([
 624             'Nedko Arnaudov <nedko@arnaudov.name>',
 625             'Christopher Arndt <chris@chrisarndt.de>',
 626             'Arnout Engelen <arnouten@bzzt.net>',
 627             'John Hedges <john@drystone.co.uk>',
 628             'Olivier Humbert <trebmuh@tuxfamily.org>',
 629             'Sarah Mischke <sarah@spooky-online.de>',
 630             'Frédéric Péters <fpeters@0d.be>',
 631             'Daniel Sheeler <dsheeler@pobox.com>',
 632             'Athanasios Silis <athanasios.silis@gmail.com>',
 633         ])
 634         about.set_logo_icon_name('jack_mixer')
 635         about.set_website('https://rdio.space/jackmixer/')
 636
 637         about.run()
 638         about.destroy()
 639
 640     def save_to_xml(self, file):
 641         log.debug("Saving to XML...")
 642         b = XmlSerialization()
 643         s = Serializator()
 644         s.serialize(self, b)
 645         b.save(file)
 646
 647     def load_from_xml(self, file, silence_errors=False):
 648         log.debug("Loading from XML...")
 649         self.unserialized_channels = []
 650         b = XmlSerialization()
 651         try:
 652             b.load(file)
 653         except:
 654             if silence_errors:
 655                 return
 656             raise
 657         self.on_channels_clear(None)
 658         s = Serializator()
 659         s.unserialize(self, b)
 660         for channel in self.unserialized_channels:
 661             if isinstance(channel, InputChannel):
 662                 if self._init_solo_channels and channel.channel_name in self._init_solo_channels:
 663                     channel.solo = True
 664                 self.add_channel_precreated(channel)
 665         self._init_solo_channels = None
 666         for channel in self.unserialized_channels:
 667             if isinstance(channel, OutputChannel):
 668                 self.add_output_channel_precreated(channel)
 669         del self.unserialized_channels
 670         if self.visible:
 671             self.window.show_all()
 672
 673     def serialize(self, object_backend):
 674         width, height = self.window.get_size()
 675         object_backend.add_property('geometry',
 676                         '%sx%s' % (width, height))
 677         pos = self.paned.get_position()
 678         object_backend.add_property('paned_position', '%s' % pos)
 679         solo_channels = []
 680         for input_channel in self.channels:
 681             if input_channel.channel.solo:
 682                 solo_channels.append(input_channel)
 683         if solo_channels:
 684             object_backend.add_property('solo_channels', '|'.join([x.channel.name for x in solo_channels]))
 685         object_backend.add_property('visible', '%s' % str(self.visible))
 686
 687     def unserialize_property(self, name, value):
 688         if name == 'geometry':
 689             width, height = value.split('x')
 690             self.window.resize(int(width), int(height))
 691             return True
 692         if name == 'solo_channels':
 693             self._init_solo_channels = value.split('|')
 694             return True
 695         if name == 'visible':
 696             self.visible = value == 'True'
 697             return True
 698         if name == 'paned_position':
 699             pos = int(value)
 700             self.paned.set_position(pos)
 701             return True
 702         return False
 703
 704     def unserialize_child(self, name):
 705         if name == InputChannel.serialization_name():
 706             channel = InputChannel(self, "", True)
 707             self.unserialized_channels.append(channel)
 708             return channel
 709
 710         if name == OutputChannel.serialization_name():
 711             channel = OutputChannel(self, "", True)
 712             self.unserialized_channels.append(channel)
 713             return channel
 714
 715         if name == gui.Factory.serialization_name():
 716             return self.gui_factory
 717
 718     def serialization_get_childs(self):
 719         '''Get child objects that required and support serialization'''
 720         childs = self.channels[:] + self.output_channels[:] + [self.gui_factory]
 721         return childs
 722
 723     def serialization_name(self):
 724         return "jack_mixer"
 725
 726     def main(self):
 727         if not self.mixer:
 728             return
 729
 730         if self.visible:
 731             self.window.show_all()
 732
 733         signal.signal(signal.SIGUSR1, self.sighandler)
 734         signal.signal(signal.SIGTERM, self.sighandler)
 735         signal.signal(signal.SIGINT, self.sighandler)
 736         signal.signal(signal.SIGHUP, signal.SIG_IGN)
 737
 738         Gtk.main()
 739
 740         #f = file("/dev/stdout", "w")
 741         #self.save_to_xml(f)
 742         #f.close
 743
 744
 745
 746 def error_dialog(parent, msg, *args):
 747     log.exception(msg, *args)
 748     err = Gtk.MessageDialog(parent=parent, modal=True, destroy_with_parent=True,
 749         message_type=Gtk.MessageType.ERROR, buttons=Gtk.ButtonsType.OK, text=msg % args)
 750     err.run()
 751     err.destroy()
 752
 753
 754 def main():
 755     parser = ArgumentParser()
 756     parser.add_argument('-c', '--config', help='use a non default configuration file')
 757     parser.add_argument('-d', '--debug', action="store_true", help='Enable debug logging messages')
 758     parser.add_argument('client_name', metavar='NAME', nargs='?', default='jack_mixer',
 759                         help='set JACK client name')
 760     args = parser.parse_args()
 761
 762     logging.basicConfig(level=logging.DEBUG if args.debug else logging.INFO,
 763                         format="%(levelname)s: %(message)s")
 764
 765     try:
 766         mixer = JackMixer(args.client_name)
 767     except Exception as e:
 768         error_dialog(None, "Mixer creation failed (%s).", e)
 769         sys.exit(1)
 770
 771     if not mixer.nsm_client and args.config:
 772         f = open(args.config)
 773         mixer.current_filename = args.config
 774
 775         try:
 776             mixer.load_from_xml(f)
 777         except Exception as e:
 778             error_dialog(mixer.window, "Failed loading settings (%s).", e)
 779
 780         mixer.window.set_default_size(60*(1+len(mixer.channels)+len(mixer.output_channels)), 300)
 781         f.close()
 782
 783     mixer.main()
 784
 785     mixer.cleanup()
 786
 787 if __name__ == "__main__":
 788     main()