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