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 os
  23 import signal
  24 import sys
  25 from argparse import ArgumentParser
  26
  27 import gi
  28 gi.require_version('Gtk', '3.0')
  29 from gi.repository import Gtk
  30 from gi.repository import GObject
  31 from gi.repository import GLib
  32
  33 # temporary change Python modules lookup path to look into installation
  34 # directory ($prefix/share/jack_mixer/)
  35 old_path = sys.path
  36 sys.path.insert(0, os.path.join(os.path.dirname(sys.argv[0]), '..', 'share', 'jack_mixer'))
  37
  38 import jack_mixer_c
  39
  40 import scale
  41 from channel import *
  42
  43 import gui
  44 from preferences import PreferencesDialog
  45
  46 from serialization_xml import XmlSerialization
  47 from serialization import SerializedObject, Serializator
  48
  49 from nsmclient import NSMClient
  50
  51 # restore Python modules lookup path
  52 sys.path = old_path
  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.mixer.midi_behavior_mode = self.gui_factory.midi_behavior_modes[self.gui_factory.get_midi_behavior_mode()]
  94
  95         self.window.set_title(client_name)
  96
  97         self.monitor_channel = self.mixer.add_output_channel("Monitor", True, True)
  98         self.save = False
  99
 100         GLib.timeout_add(80, self.read_meters)
 101         if with_nsm:
 102             GLib.timeout_add(200, self.nsm_react)
 103         GLib.timeout_add(50, self.midi_events_check)
 104
 105     def new_menu_item(self, title, callback=None, accel=None, enabled=True):
 106         menuitem = Gtk.MenuItem.new_with_mnemonic(title)
 107         menuitem.set_sensitive(enabled)
 108         if callback:
 109             menuitem.connect("activate", callback)
 110         if accel:
 111             key, mod = Gtk.accelerator_parse(accel)
 112             menuitem.add_accelerator("activate", self.menu_accelgroup, key, mod,
 113                                      Gtk.AccelFlags.VISIBLE)
 114         return menuitem
 115
 116     def create_ui(self, with_nsm):
 117         self.channels = []
 118         self.output_channels = []
 119         self.window = Gtk.Window(type=Gtk.WindowType.TOPLEVEL)
 120         self.window.set_icon_name('jack_mixer')
 121         self.gui_factory = gui.Factory(self.window, self.meter_scales, self.slider_scales)
 122         self.gui_factory.connect('midi-behavior-mode-changed', self.on_midi_behavior_mode_changed)
 123         self.vbox_top = Gtk.VBox()
 124         self.window.add(self.vbox_top)
 125
 126         self.menu_accelgroup = Gtk.AccelGroup()
 127         self.window.add_accel_group(self.menu_accelgroup)
 128
 129         self.menubar = Gtk.MenuBar()
 130         self.vbox_top.pack_start(self.menubar, False, True, 0)
 131
 132         mixer_menu_item = Gtk.MenuItem.new_with_mnemonic("_Mixer")
 133         self.menubar.append(mixer_menu_item)
 134         edit_menu_item = Gtk.MenuItem.new_with_mnemonic('_Edit')
 135         self.menubar.append(edit_menu_item)
 136         help_menu_item = Gtk.MenuItem.new_with_mnemonic('_Help')
 137         self.menubar.append(help_menu_item)
 138
 139         self.window.set_default_size(420, 420)
 140
 141         self.mixer_menu = Gtk.Menu()
 142         mixer_menu_item.set_submenu(self.mixer_menu)
 143
 144         self.mixer_menu.append(self.new_menu_item('New _Input Channel',
 145                                                   self.on_add_input_channel, "<Control>N"))
 146         self.mixer_menu.append(self.new_menu_item('New Output _Channel',
 147                                                   self.on_add_output_channel, "<Shift><Control>N"))
 148
 149         self.mixer_menu.append(Gtk.SeparatorMenuItem())
 150         if not with_nsm:
 151             self.mixer_menu.append(self.new_menu_item('_Open...', self.on_open_cb, "<Control>O"))
 152
 153         self.mixer_menu.append(self.new_menu_item('_Save', self.on_save_cb, "<Control>S"))
 154
 155         if not with_nsm:
 156             self.mixer_menu.append(self.new_menu_item('Save _As...', self.on_save_as_cb,
 157                                                       "<Shift><Control>S"))
 158
 159         self.mixer_menu.append(Gtk.SeparatorMenuItem())
 160         self.mixer_menu.append(self.new_menu_item('_Quit', self.on_quit_cb, "<Control>Q"))
 161
 162         edit_menu = Gtk.Menu()
 163         edit_menu_item.set_submenu(edit_menu)
 164
 165         self.channel_edit_input_menu_item = self.new_menu_item('_Edit Input Channel',
 166                                                                enabled=False)
 167         edit_menu.append(self.channel_edit_input_menu_item)
 168         self.channel_edit_input_menu = Gtk.Menu()
 169         self.channel_edit_input_menu_item.set_submenu(self.channel_edit_input_menu)
 170
 171         self.channel_edit_output_menu_item = self.new_menu_item('E_dit Output Channel',
 172                                                                 enabled=False)
 173         edit_menu.append(self.channel_edit_output_menu_item)
 174         self.channel_edit_output_menu = Gtk.Menu()
 175         self.channel_edit_output_menu_item.set_submenu(self.channel_edit_output_menu)
 176
 177         self.channel_remove_input_menu_item = self.new_menu_item('_Remove Input Channel',
 178                                                                  enabled=False)
 179         edit_menu.append(self.channel_remove_input_menu_item)
 180         self.channel_remove_input_menu = Gtk.Menu()
 181         self.channel_remove_input_menu_item.set_submenu(self.channel_remove_input_menu)
 182
 183         self.channel_remove_output_menu_item = self.new_menu_item('Re_move Output Channel',
 184                                                                   enabled=False)
 185         edit_menu.append(self.channel_remove_output_menu_item)
 186         self.channel_remove_output_menu = Gtk.Menu()
 187         self.channel_remove_output_menu_item.set_submenu(self.channel_remove_output_menu)
 188
 189         edit_menu.append(self.new_menu_item('_Clear', self.on_channels_clear, "<Control>X"))
 190         edit_menu.append(Gtk.SeparatorMenuItem())
 191         edit_menu.append(self.new_menu_item('_Preferences', self.on_preferences_cb, "<Control>P"))
 192
 193         help_menu = Gtk.Menu()
 194         help_menu_item.set_submenu(help_menu)
 195
 196         help_menu.append(self.new_menu_item('_About', self.on_about, "F1"))
 197
 198         self.hbox_top = Gtk.HBox()
 199         self.vbox_top.pack_start(self.hbox_top, True, True, 0)
 200
 201         self.scrolled_window = Gtk.ScrolledWindow()
 202         self.scrolled_window.set_policy(Gtk.PolicyType.AUTOMATIC, Gtk.PolicyType.AUTOMATIC)
 203
 204         self.hbox_inputs = Gtk.Box()
 205         self.hbox_inputs.set_spacing(0)
 206         self.hbox_inputs.set_border_width(0)
 207         self.hbox_top.set_spacing(0)
 208         self.hbox_top.set_border_width(0)
 209         self.scrolled_window.add(self.hbox_inputs)
 210         self.hbox_outputs = Gtk.Box()
 211         self.hbox_outputs.set_spacing(0)
 212         self.hbox_outputs.set_border_width(0)
 213         self.scrolled_output = Gtk.ScrolledWindow()
 214         self.scrolled_output.set_policy(Gtk.PolicyType.AUTOMATIC, Gtk.PolicyType.AUTOMATIC)
 215         self.scrolled_output.add(self.hbox_outputs)
 216         self.paned = Gtk.HPaned()
 217         self.paned.set_wide_handle(True)
 218         self.hbox_top.pack_start(self.paned, True, True, 0)
 219         self.paned.pack1(self.scrolled_window, True, False)
 220         self.paned.pack2(self.scrolled_output, True, False)
 221
 222         self.window.connect("destroy", Gtk.main_quit)
 223
 224         self.window.connect('delete-event', self.on_delete_event)
 225
 226     def nsm_react(self):
 227         self.nsm_client.reactToMessage()
 228         return True
 229
 230     def nsm_hide_cb(self):
 231         self.window.hide()
 232         self.visible = False
 233         self.nsm_client.announceGuiVisibility(False)
 234
 235     def nsm_show_cb(self):
 236         self.window.show_all()
 237         self.visible = True
 238         self.nsm_client.announceGuiVisibility(True)
 239
 240     def nsm_open_cb(self, path, session_name, client_name):
 241         self.create_mixer(client_name, with_nsm = True)
 242         self.current_filename = path + '.xml'
 243         if os.path.isfile(self.current_filename):
 244             f = open(self.current_filename, 'r')
 245             self.load_from_xml(f)
 246             f.close()
 247         else:
 248             f = open(self.current_filename, 'w')
 249             f.close()
 250
 251     def nsm_save_cb(self, path, session_name, client_name):
 252         self.current_filename = path + '.xml'
 253         f = open(self.current_filename, 'w')
 254         self.save_to_xml(f)
 255         f.close()
 256
 257     def nsm_exit_cb(self, path, session_name, client_name):
 258         Gtk.main_quit()
 259
 260     def on_midi_behavior_mode_changed(self, gui_factory, value):
 261         self.mixer.midi_behavior_mode = value
 262
 263     def on_delete_event(self, widget, event):
 264         return False
 265
 266     def sighandler(self, signum, frame):
 267         #print "Signal %d received" % signum
 268         if signum == signal.SIGUSR1:
 269             self.save = True
 270         elif signum == signal.SIGTERM:
 271             Gtk.main_quit()
 272         elif signum == signal.SIGINT:
 273             Gtk.main_quit()
 274         else:
 275             print("Unknown signal %d received" % signum)
 276
 277     def cleanup(self):
 278         print("Cleaning jack_mixer")
 279         if not self.mixer:
 280             return
 281
 282         for channel in self.channels:
 283             channel.unrealize()
 284
 285         self.mixer.destroy()
 286
 287     def on_open_cb(self, *args):
 288         dlg = Gtk.FileChooserDialog(title='Open', parent=self.window,
 289                         action=Gtk.FileChooserAction.OPEN)
 290         dlg.add_buttons(Gtk.STOCK_CANCEL, Gtk.ResponseType.CANCEL,
 291                         Gtk.STOCK_OPEN, Gtk.ResponseType.OK)
 292         dlg.set_default_response(Gtk.ResponseType.OK)
 293         if dlg.run() == Gtk.ResponseType.OK:
 294             filename = dlg.get_filename()
 295             try:
 296                 f = open(filename, 'r')
 297                 self.load_from_xml(f)
 298             except Exception as e:
 299                 err = Gtk.MessageDialog(parent = self.window,
 300                             modal = True,
 301                             message_type = Gtk.MessageType.ERROR,
 302                             buttons = Gtk.ButtonsType.OK,
 303                             text = "Failed loading settings (%s)." % str(e))
 304                 err.run()
 305                 err.destroy()
 306             else:
 307                 self.current_filename = filename
 308             finally:
 309                 f.close()
 310         dlg.destroy()
 311
 312     def on_save_cb(self, *args):
 313         if not self.current_filename:
 314             return self.on_save_as_cb()
 315         f = open(self.current_filename, 'w')
 316         self.save_to_xml(f)
 317         f.close()
 318
 319     def on_save_as_cb(self, *args):
 320         dlg = Gtk.FileChooserDialog(title='Save', parent=self.window,
 321                         action=Gtk.FileChooserAction.SAVE)
 322         dlg.add_buttons(Gtk.STOCK_CANCEL, Gtk.ResponseType.CANCEL,
 323                         Gtk.STOCK_SAVE, Gtk.ResponseType.OK)
 324         dlg.set_default_response(Gtk.ResponseType.OK)
 325         if dlg.run() == Gtk.ResponseType.OK:
 326             self.current_filename = dlg.get_filename()
 327             self.on_save_cb()
 328         dlg.destroy()
 329
 330     def on_quit_cb(self, *args):
 331         Gtk.main_quit()
 332
 333     preferences_dialog = None
 334     def on_preferences_cb(self, widget):
 335         if not self.preferences_dialog:
 336             self.preferences_dialog = PreferencesDialog(self)
 337         self.preferences_dialog.show()
 338         self.preferences_dialog.present()
 339
 340     def on_add_input_channel(self, widget):
 341         dialog = NewInputChannelDialog(app=self)
 342         dialog.set_transient_for(self.window)
 343         dialog.show()
 344         ret = dialog.run()
 345         dialog.hide()
 346
 347         if ret == Gtk.ResponseType.OK:
 348             result = dialog.get_result()
 349             channel = self.add_channel(**result)
 350             if self.visible:
 351                 self.window.show_all()
 352
 353     def on_add_output_channel(self, widget):
 354         dialog = NewOutputChannelDialog(app=self)
 355         dialog.set_transient_for(self.window)
 356         dialog.show()
 357         ret = dialog.run()
 358         dialog.hide()
 359
 360         if ret == Gtk.ResponseType.OK:
 361             result = dialog.get_result()
 362             channel = self.add_output_channel(**result)
 363             if self.visible:
 364                 self.window.show_all()
 365
 366     def on_edit_input_channel(self, widget, channel):
 367         print('Editing channel "%s"' % channel.channel_name)
 368         channel.on_channel_properties()
 369
 370     def remove_channel_edit_input_menuitem_by_label(self, widget, label):
 371         if (widget.get_label() == label):
 372             self.channel_edit_input_menu.remove(widget)
 373
 374     def on_remove_input_channel(self, widget, channel):
 375         print('Removing channel "%s"' % channel.channel_name)
 376         self.channel_remove_input_menu.remove(widget)
 377         self.channel_edit_input_menu.foreach(
 378             self.remove_channel_edit_input_menuitem_by_label,
 379             channel.channel_name);
 380         if self.monitored_channel is channel:
 381             channel.monitor_button.set_active(False)
 382         for i in range(len(self.channels)):
 383             if self.channels[i] is channel:
 384                 channel.unrealize()
 385                 del self.channels[i]
 386                 self.hbox_inputs.remove(channel.get_parent())
 387                 break
 388         if not self.channels:
 389             self.channel_edit_input_menu_item.set_sensitive(False)
 390             self.channel_remove_input_menu_item.set_sensitive(False)
 391
 392     def on_edit_output_channel(self, widget, channel):
 393         print('Editing channel "%s"' % channel.channel_name)
 394         channel.on_channel_properties()
 395
 396     def remove_channel_edit_output_menuitem_by_label(self, widget, label):
 397         if (widget.get_label() == label):
 398             self.channel_edit_output_menu.remove(widget)
 399
 400     def on_remove_output_channel(self, widget, channel):
 401         print('Removing channel "%s"' % channel.channel_name)
 402         self.channel_remove_output_menu.remove(widget)
 403         self.channel_edit_output_menu.foreach(
 404             self.remove_channel_edit_output_menuitem_by_label,
 405             channel.channel_name);
 406         if self.monitored_channel is channel:
 407             channel.monitor_button.set_active(False)
 408         for i in range(len(self.channels)):
 409             if self.output_channels[i] is channel:
 410                 channel.unrealize()
 411                 del self.output_channels[i]
 412                 self.hbox_outputs.remove(channel.get_parent())
 413                 break
 414         if not self.output_channels:
 415             self.channel_edit_output_menu_item.set_sensitive(False)
 416             self.channel_remove_output_menu_item.set_sensitive(False)
 417
 418     def rename_channels(self, container, parameters):
 419         if (container.get_label() == parameters['oldname']):
 420             container.set_label(parameters['newname'])
 421
 422     def on_channel_rename(self, oldname, newname):
 423         rename_parameters = { 'oldname' : oldname, 'newname' : newname }
 424         self.channel_edit_input_menu.foreach(self.rename_channels,
 425             rename_parameters)
 426         self.channel_edit_output_menu.foreach(self.rename_channels,
 427             rename_parameters)
 428         self.channel_remove_input_menu.foreach(self.rename_channels,
 429             rename_parameters)
 430         self.channel_remove_output_menu.foreach(self.rename_channels,
 431             rename_parameters)
 432         #print("Renaming channel from %s to %s\n" % (oldname, newname))
 433
 434
 435     def on_channels_clear(self, widget):
 436         dlg = Gtk.MessageDialog(parent = self.window,
 437                 modal = True,
 438                 message_type = Gtk.MessageType.WARNING,
 439                 text = "Are you sure you want to clear all channels?",
 440                 buttons = Gtk.ButtonsType.OK_CANCEL)
 441         if not widget or dlg.run() == Gtk.ResponseType.OK:
 442             for channel in self.output_channels:
 443                 channel.unrealize()
 444                 self.hbox_outputs.remove(channel.get_parent())
 445             for channel in self.channels:
 446                 channel.unrealize()
 447                 self.hbox_inputs.remove(channel.get_parent())
 448             self.channels = []
 449             self.output_channels = []
 450             self.channel_edit_input_menu = Gtk.Menu()
 451             self.channel_edit_input_menu_item.set_submenu(self.channel_edit_input_menu)
 452             self.channel_edit_input_menu_item.set_sensitive(False)
 453             self.channel_remove_input_menu = Gtk.Menu()
 454             self.channel_remove_input_menu_item.set_submenu(self.channel_remove_input_menu)
 455             self.channel_remove_input_menu_item.set_sensitive(False)
 456             self.channel_edit_output_menu = Gtk.Menu()
 457             self.channel_edit_output_menu_item.set_submenu(self.channel_edit_output_menu)
 458             self.channel_edit_output_menu_item.set_sensitive(False)
 459             self.channel_remove_output_menu = Gtk.Menu()
 460             self.channel_remove_output_menu_item.set_submenu(self.channel_remove_output_menu)
 461             self.channel_remove_output_menu_item.set_sensitive(False)
 462         dlg.destroy()
 463
 464     def add_channel(self, name, stereo, volume_cc, balance_cc, mute_cc, solo_cc, value):
 465         try:
 466             channel = InputChannel(self, name, stereo, value)
 467             self.add_channel_precreated(channel)
 468         except Exception:
 469             e = sys.exc_info()[0]
 470             err = Gtk.MessageDialog(self.window,
 471                             Gtk.DialogFlags.MODAL | Gtk.DialogFlags.DESTROY_WITH_PARENT,
 472                             Gtk.MessageType.ERROR,
 473                             Gtk.ButtonsType.OK,
 474                             "Channel creation failed")
 475             err.run()
 476             err.destroy()
 477             return
 478         if volume_cc != -1:
 479             channel.channel.volume_midi_cc = volume_cc
 480         else:
 481             channel.channel.autoset_volume_midi_cc()
 482         if balance_cc != -1:
 483             channel.channel.balance_midi_cc = balance_cc
 484         else:
 485             channel.channel.autoset_balance_midi_cc()
 486         if mute_cc != -1:
 487             channel.channel.mute_midi_cc = mute_cc
 488         else:
 489             channel.channel.autoset_mute_midi_cc()
 490         if solo_cc != -1:
 491             channel.channel.solo_midi_cc = solo_cc
 492         else:
 493             channel.channel.autoset_solo_midi_cc()
 494         return channel
 495
 496     def add_channel_precreated(self, channel):
 497         frame = Gtk.Frame()
 498         frame.add(channel)
 499         self.hbox_inputs.pack_start(frame, False, True, 0)
 500         channel.realize()
 501
 502         channel_edit_menu_item = Gtk.MenuItem(label=channel.channel_name)
 503         self.channel_edit_input_menu.append(channel_edit_menu_item)
 504         channel_edit_menu_item.connect("activate", self.on_edit_input_channel, channel)
 505         self.channel_edit_input_menu_item.set_sensitive(True)
 506
 507         channel_remove_menu_item = Gtk.MenuItem(label=channel.channel_name)
 508         self.channel_remove_input_menu.append(channel_remove_menu_item)
 509         channel_remove_menu_item.connect("activate", self.on_remove_input_channel, channel)
 510         self.channel_remove_input_menu_item.set_sensitive(True)
 511
 512         self.channels.append(channel)
 513
 514         for outputchannel in self.output_channels:
 515             channel.add_control_group(outputchannel)
 516
 517         # create post fader output channel matching the input channel
 518         channel.post_fader_output_channel = self.mixer.add_output_channel(
 519                         channel.channel.name + ' Out', channel.channel.is_stereo, True)
 520         channel.post_fader_output_channel.volume = 0
 521         channel.post_fader_output_channel.set_solo(channel.channel, True)
 522
 523     def read_meters(self):
 524         for channel in self.channels:
 525             channel.read_meter()
 526         for channel in self.output_channels:
 527             channel.read_meter()
 528         return True
 529
 530     def midi_events_check(self):
 531         for channel in self.channels + self.output_channels:
 532             channel.midi_events_check()
 533         return True
 534
 535     def add_output_channel(self, name, stereo, volume_cc, balance_cc, mute_cc,
 536             display_solo_buttons, color, value):
 537         try:
 538             channel = OutputChannel(self, name, stereo, value)
 539             channel.display_solo_buttons = display_solo_buttons
 540             channel.color = color
 541             self.add_output_channel_precreated(channel)
 542         except Exception:
 543             err = Gtk.MessageDialog(self.window,
 544                             Gtk.DialogFlags.MODAL | Gtk.DialogFlags.DESTROY_WITH_PARENT,
 545                             Gtk.MessageType.ERROR,
 546                             Gtk.ButtonsType.OK,
 547                             "Channel creation failed")
 548             err.run()
 549             err.destroy()
 550             return
 551
 552         if volume_cc != -1:
 553             channel.channel.volume_midi_cc = volume_cc
 554         else:
 555             channel.channel.autoset_volume_midi_cc()
 556         if balance_cc != -1:
 557             channel.channel.balance_midi_cc = balance_cc
 558         else:
 559             channel.channel.autoset_balance_midi_cc()
 560         if mute_cc != -1:
 561             channel.channel.mute_midi_cc = mute_cc
 562         else:
 563             channel.channel.autoset_mute_midi_cc()
 564
 565         return channel
 566
 567     def add_output_channel_precreated(self, channel):
 568         frame = Gtk.Frame()
 569         frame.add(channel)
 570         self.hbox_outputs.pack_end(frame, False, True, 0)
 571         self.hbox_outputs.reorder_child(frame, 0)
 572         channel.realize()
 573
 574         channel_edit_menu_item = Gtk.MenuItem(label=channel.channel_name)
 575         self.channel_edit_output_menu.append(channel_edit_menu_item)
 576         channel_edit_menu_item.connect("activate", self.on_edit_output_channel, channel)
 577         self.channel_edit_output_menu_item.set_sensitive(True)
 578
 579         channel_remove_menu_item = Gtk.MenuItem(label=channel.channel_name)
 580         self.channel_remove_output_menu.append(channel_remove_menu_item)
 581         channel_remove_menu_item.connect("activate", self.on_remove_output_channel, channel)
 582         self.channel_remove_output_menu_item.set_sensitive(True)
 583
 584         self.output_channels.append(channel)
 585
 586     _monitored_channel = None
 587     def get_monitored_channel(self):
 588         return self._monitored_channel
 589
 590     def set_monitored_channel(self, channel):
 591         if self._monitored_channel:
 592             if channel.channel.name == self._monitored_channel.channel.name:
 593                 return
 594         self._monitored_channel = channel
 595         if type(channel) is InputChannel:
 596             # reset all solo/mute settings
 597             for in_channel in self.channels:
 598                 self.monitor_channel.set_solo(in_channel.channel, False)
 599                 self.monitor_channel.set_muted(in_channel.channel, False)
 600             self.monitor_channel.set_solo(channel.channel, True)
 601             self.monitor_channel.prefader = True
 602         else:
 603             self.monitor_channel.prefader = False
 604         self.update_monitor(channel)
 605     monitored_channel = property(get_monitored_channel, set_monitored_channel)
 606
 607     def update_monitor(self, channel):
 608         if self.monitored_channel is not channel:
 609             return
 610         self.monitor_channel.volume = channel.channel.volume
 611         self.monitor_channel.balance = channel.channel.balance
 612         self.monitor_channel.out_mute = channel.channel.out_mute
 613         if type(self.monitored_channel) is OutputChannel:
 614             # sync solo/muted channels
 615             for input_channel in self.channels:
 616                 self.monitor_channel.set_solo(input_channel.channel,
 617                                 channel.channel.is_solo(input_channel.channel))
 618                 self.monitor_channel.set_muted(input_channel.channel,
 619                                 channel.channel.is_muted(input_channel.channel))
 620
 621     def get_input_channel_by_name(self, name):
 622         for input_channel in self.channels:
 623             if input_channel.channel.name == name:
 624                 return input_channel
 625         return None
 626
 627     def on_about(self, *args):
 628         about = Gtk.AboutDialog()
 629         about.set_name('jack_mixer')
 630         about.set_copyright('Copyright © 2006-2020\nNedko Arnaudov, Frédéric Péters, Arnout Engelen, Daniel Sheeler')
 631         about.set_license('''\
 632 jack_mixer is free software; you can redistribute it and/or modify it
 633 under the terms of the GNU General Public License as published by the
 634 Free Software Foundation; either version 2 of the License, or (at your
 635 option) any later version.
 636
 637 jack_mixer is distributed in the hope that it will be useful, but
 638 WITHOUT ANY WARRANTY; without even the implied warranty of
 639 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 640 General Public License for more details.
 641
 642 You should have received a copy of the GNU General Public License along
 643 with jack_mixer; if not, write to the Free Software Foundation, Inc., 51
 644 Franklin Street, Fifth Floor, Boston, MA 02110-130159 USA''')
 645         about.set_authors([
 646             'Nedko Arnaudov <nedko@arnaudov.name>',
 647             'Christopher Arndt <chris@chrisarndt.de>',
 648             'Arnout Engelen <arnouten@bzzt.net>',
 649             'John Hedges <john@drystone.co.uk>',
 650             'Olivier Humbert <trebmuh@tuxfamily.org>',
 651             'Sarah Mischke <sarah@spooky-online.de>',
 652             'Frédéric Péters <fpeters@0d.be>',
 653             'Daniel Sheeler <dsheeler@pobox.com>',
 654             'Athanasios Silis <athanasios.silis@gmail.com>',
 655         ])
 656         about.set_logo_icon_name('jack_mixer')
 657         about.set_website('https://rdio.space/jackmixer/')
 658
 659         about.run()
 660         about.destroy()
 661
 662     def save_to_xml(self, file):
 663         #print "Saving to XML..."
 664         b = XmlSerialization()
 665         s = Serializator()
 666         s.serialize(self, b)
 667         b.save(file)
 668
 669     def load_from_xml(self, file, silence_errors=False):
 670         #print "Loading from XML..."
 671         self.unserialized_channels = []
 672         b = XmlSerialization()
 673         try:
 674             b.load(file)
 675         except:
 676             if silence_errors:
 677                 return
 678             raise
 679         self.on_channels_clear(None)
 680         s = Serializator()
 681         s.unserialize(self, b)
 682         for channel in self.unserialized_channels:
 683             if isinstance(channel, InputChannel):
 684                 if self._init_solo_channels and channel.channel_name in self._init_solo_channels:
 685                     channel.solo = True
 686                 self.add_channel_precreated(channel)
 687         self._init_solo_channels = None
 688         for channel in self.unserialized_channels:
 689             if isinstance(channel, OutputChannel):
 690                 self.add_output_channel_precreated(channel)
 691         del self.unserialized_channels
 692         if self.visible:
 693             self.window.show_all()
 694
 695     def serialize(self, object_backend):
 696         width, height = self.window.get_size()
 697         object_backend.add_property('geometry',
 698                         '%sx%s' % (width, height))
 699         pos = self.paned.get_position()
 700         object_backend.add_property('paned_position', '%s' % pos)
 701         solo_channels = []
 702         for input_channel in self.channels:
 703             if input_channel.channel.solo:
 704                 solo_channels.append(input_channel)
 705         if solo_channels:
 706             object_backend.add_property('solo_channels', '|'.join([x.channel.name for x in solo_channels]))
 707         object_backend.add_property('visible', '%s' % str(self.visible))
 708
 709     def unserialize_property(self, name, value):
 710         if name == 'geometry':
 711             width, height = value.split('x')
 712             self.window.resize(int(width), int(height))
 713             return True
 714         if name == 'solo_channels':
 715             self._init_solo_channels = value.split('|')
 716             return True
 717         if name == 'visible':
 718             self.visible = value == 'True'
 719             return True
 720         if name == 'paned_position':
 721             pos = int(value)
 722             self.paned.set_position(pos)
 723             return True
 724         return False
 725
 726     def unserialize_child(self, name):
 727         if name == InputChannel.serialization_name():
 728             channel = InputChannel(self, "", True)
 729             self.unserialized_channels.append(channel)
 730             return channel
 731
 732         if name == OutputChannel.serialization_name():
 733             channel = OutputChannel(self, "", True)
 734             self.unserialized_channels.append(channel)
 735             return channel
 736
 737         if name == gui.Factory.serialization_name():
 738             return self.gui_factory
 739
 740     def serialization_get_childs(self):
 741         '''Get child objects that required and support serialization'''
 742         childs = self.channels[:] + self.output_channels[:] + [self.gui_factory]
 743         return childs
 744
 745     def serialization_name(self):
 746         return "jack_mixer"
 747
 748     def main(self):
 749         if not self.mixer:
 750             return
 751
 752         if self.visible:
 753             self.window.show_all()
 754
 755         signal.signal(signal.SIGUSR1, self.sighandler)
 756         signal.signal(signal.SIGTERM, self.sighandler)
 757         signal.signal(signal.SIGINT, self.sighandler)
 758         signal.signal(signal.SIGHUP, signal.SIG_IGN)
 759
 760         Gtk.main()
 761
 762         #f = file("/dev/stdout", "w")
 763         #self.save_to_xml(f)
 764         #f.close
 765
 766 def main():
 767     parser = ArgumentParser()
 768     parser.add_argument('-c', '--config', help='use a non default configuration file')
 769     parser.add_argument('client_name', metavar='NAME', nargs='?', default='jack_mixer',
 770                         help='set JACK client name')
 771     args = parser.parse_args()
 772
 773     try:
 774         mixer = JackMixer(args.client_name)
 775     except Exception as e:
 776         err = Gtk.MessageDialog(parent = None,
 777                                 modal = True,
 778                                 message_type = Gtk.MessageType.ERROR,
 779                                 buttons = Gtk.ButtonsType.OK,
 780                                 text = "Mixer creation failed (%s)" % str(e))
 781         err.run()
 782         err.destroy()
 783         sys.exit(1)
 784
 785     if not mixer.nsm_client and args.config:
 786         f = open(args.config)
 787         mixer.current_filename = args.config
 788
 789         try:
 790             mixer.load_from_xml(f)
 791         except Exception as e:
 792             err = Gtk.MessageDialog(parent = mixer.window,
 793                             modal =  True,
 794                             message_type = Gtk.MessageType.ERROR,
 795                             buttons = Gtk.ButtonsType.OK,
 796                             text = "Failed loading settings (%s)." % str(e))
 797             err.run()
 798             err.destroy()
 799         mixer.window.set_default_size(60*(1+len(mixer.channels)+len(mixer.output_channels)), 300)
 800         f.close()
 801
 802     mixer.main()
 803
 804     mixer.cleanup()
 805
 806 if __name__ == "__main__":
 807     main()