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.mixer = jack_mixer_c.Mixer(client_name)
  89         self.create_ui(with_nsm)
  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.gui_factory.emit_midi_behavior_mode()
 122
 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.width = 420
 140         self.height = 420
 141         self.paned_position = 210
 142         self.window.set_default_size(self.width, self.height)
 143
 144         self.mixer_menu = Gtk.Menu()
 145         mixer_menu_item.set_submenu(self.mixer_menu)
 146
 147         self.mixer_menu.append(self.new_menu_item('New _Input Channel',
 148                                                   self.on_add_input_channel, "<Control>N"))
 149         self.mixer_menu.append(self.new_menu_item('New Output _Channel',
 150                                                   self.on_add_output_channel, "<Shift><Control>N"))
 151
 152         self.mixer_menu.append(Gtk.SeparatorMenuItem())
 153         if not with_nsm:
 154             self.mixer_menu.append(self.new_menu_item('_Open...', self.on_open_cb, "<Control>O"))
 155
 156         self.mixer_menu.append(self.new_menu_item('_Save', self.on_save_cb, "<Control>S"))
 157
 158         if not with_nsm:
 159             self.mixer_menu.append(self.new_menu_item('Save _As...', self.on_save_as_cb,
 160                                                       "<Shift><Control>S"))
 161
 162         self.mixer_menu.append(Gtk.SeparatorMenuItem())
 163         self.mixer_menu.append(self.new_menu_item('_Quit', self.on_quit_cb, "<Control>Q"))
 164
 165         edit_menu = Gtk.Menu()
 166         edit_menu_item.set_submenu(edit_menu)
 167
 168         self.channel_edit_input_menu_item = self.new_menu_item('_Edit Input Channel',
 169                                                                enabled=False)
 170         edit_menu.append(self.channel_edit_input_menu_item)
 171         self.channel_edit_input_menu = Gtk.Menu()
 172         self.channel_edit_input_menu_item.set_submenu(self.channel_edit_input_menu)
 173
 174         self.channel_edit_output_menu_item = self.new_menu_item('E_dit Output Channel',
 175                                                                 enabled=False)
 176         edit_menu.append(self.channel_edit_output_menu_item)
 177         self.channel_edit_output_menu = Gtk.Menu()
 178         self.channel_edit_output_menu_item.set_submenu(self.channel_edit_output_menu)
 179
 180         self.channel_remove_input_menu_item = self.new_menu_item('_Remove Input Channel',
 181                                                                  enabled=False)
 182         edit_menu.append(self.channel_remove_input_menu_item)
 183         self.channel_remove_input_menu = Gtk.Menu()
 184         self.channel_remove_input_menu_item.set_submenu(self.channel_remove_input_menu)
 185
 186         self.channel_remove_output_menu_item = self.new_menu_item('Re_move Output Channel',
 187                                                                   enabled=False)
 188         edit_menu.append(self.channel_remove_output_menu_item)
 189         self.channel_remove_output_menu = Gtk.Menu()
 190         self.channel_remove_output_menu_item.set_submenu(self.channel_remove_output_menu)
 191
 192         edit_menu.append(self.new_menu_item('_Clear', self.on_channels_clear, "<Control>X"))
 193         edit_menu.append(Gtk.SeparatorMenuItem())
 194         edit_menu.append(self.new_menu_item('_Preferences', self.on_preferences_cb, "<Control>P"))
 195
 196         help_menu = Gtk.Menu()
 197         help_menu_item.set_submenu(help_menu)
 198
 199         help_menu.append(self.new_menu_item('_About', self.on_about, "F1"))
 200
 201         self.hbox_top = Gtk.HBox()
 202         self.vbox_top.pack_start(self.hbox_top, True, True, 0)
 203
 204         self.scrolled_window = Gtk.ScrolledWindow()
 205         self.scrolled_window.set_policy(Gtk.PolicyType.AUTOMATIC, Gtk.PolicyType.AUTOMATIC)
 206
 207         self.hbox_inputs = Gtk.Box()
 208         self.hbox_inputs.set_spacing(0)
 209         self.hbox_inputs.set_border_width(0)
 210         self.hbox_top.set_spacing(0)
 211         self.hbox_top.set_border_width(0)
 212         self.scrolled_window.add(self.hbox_inputs)
 213         self.hbox_outputs = Gtk.Box()
 214         self.hbox_outputs.set_spacing(0)
 215         self.hbox_outputs.set_border_width(0)
 216         self.scrolled_output = Gtk.ScrolledWindow()
 217         self.scrolled_output.set_policy(Gtk.PolicyType.AUTOMATIC, Gtk.PolicyType.AUTOMATIC)
 218         self.scrolled_output.add(self.hbox_outputs)
 219         self.paned = Gtk.HPaned()
 220         self.paned.set_wide_handle(True)
 221         self.hbox_top.pack_start(self.paned, True, True, 0)
 222         self.paned.pack1(self.scrolled_window, True, False)
 223         self.paned.pack2(self.scrolled_output, True, False)
 224
 225         self.window.connect("destroy", Gtk.main_quit)
 226
 227         self.window.connect('delete-event', self.on_delete_event)
 228
 229     def nsm_react(self):
 230         self.nsm_client.reactToMessage()
 231         return True
 232
 233     def nsm_hide_cb(self):
 234         self.window.hide()
 235         self.visible = False
 236         self.nsm_client.announceGuiVisibility(False)
 237
 238     def nsm_show_cb(self):
 239         width, height = self.window.get_size()
 240         self.window.show_all()
 241         self.paned.set_position(self.paned_position/self.width*width)
 242
 243         self.visible = True
 244         self.nsm_client.announceGuiVisibility(True)
 245
 246     def nsm_open_cb(self, path, session_name, client_name):
 247         self.create_mixer(client_name, with_nsm = True)
 248         self.current_filename = path + '.xml'
 249         if os.path.isfile(self.current_filename):
 250             f = open(self.current_filename, 'r')
 251             self.load_from_xml(f, from_nsm=True)
 252             f.close()
 253         else:
 254             f = open(self.current_filename, 'w')
 255             f.close()
 256
 257     def nsm_save_cb(self, path, session_name, client_name):
 258         self.current_filename = path + '.xml'
 259         f = open(self.current_filename, 'w')
 260         self.save_to_xml(f)
 261         f.close()
 262
 263     def nsm_exit_cb(self, path, session_name, client_name):
 264         Gtk.main_quit()
 265
 266     def on_midi_behavior_mode_changed(self, gui_factory, value):
 267         self.mixer.midi_behavior_mode = value
 268
 269     def on_delete_event(self, widget, event):
 270         return False
 271
 272     def sighandler(self, signum, frame):
 273         log.debug("Signal %d received.", signum)
 274         if signum == signal.SIGUSR1:
 275             self.save = True
 276         elif signum == signal.SIGTERM:
 277             Gtk.main_quit()
 278         elif signum == signal.SIGINT:
 279             Gtk.main_quit()
 280         else:
 281             log.warning("Unknown signal %d received.", signum)
 282
 283     def cleanup(self):
 284         log.debug("Cleaning jack_mixer.")
 285         if not self.mixer:
 286             return
 287
 288         for channel in self.channels:
 289             channel.unrealize()
 290
 291         self.mixer.destroy()
 292
 293     def on_open_cb(self, *args):
 294         dlg = Gtk.FileChooserDialog(title='Open', parent=self.window,
 295                         action=Gtk.FileChooserAction.OPEN)
 296         dlg.add_buttons(Gtk.STOCK_CANCEL, Gtk.ResponseType.CANCEL,
 297                         Gtk.STOCK_OPEN, Gtk.ResponseType.OK)
 298         dlg.set_default_response(Gtk.ResponseType.OK)
 299         if dlg.run() == Gtk.ResponseType.OK:
 300             filename = dlg.get_filename()
 301             try:
 302                 f = open(filename, 'r')
 303                 self.load_from_xml(f)
 304             except Exception as e:
 305                 error_dialog(self.window, "Failed loading settings (%s)", e)
 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 or self.nsm_client == None:
 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 or self.nsm_client == None:
 364                 self.window.show_all()
 365
 366     def on_edit_input_channel(self, widget, channel):
 367         log.debug('Editing input 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         log.debug('Removing input 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         log.debug('Editing output 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         log.debug('Removing output 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         log.debug('Renaming channel from "%s" to "%s".', oldname, newname)
 433
 434     def on_channels_clear(self, widget):
 435         dlg = Gtk.MessageDialog(parent = self.window,
 436                 modal = True,
 437                 message_type = Gtk.MessageType.WARNING,
 438                 text = "Are you sure you want to clear all channels?",
 439                 buttons = Gtk.ButtonsType.OK_CANCEL)
 440         if not widget or dlg.run() == Gtk.ResponseType.OK:
 441             for channel in self.output_channels:
 442                 channel.unrealize()
 443                 self.hbox_outputs.remove(channel.get_parent())
 444             for channel in self.channels:
 445                 channel.unrealize()
 446                 self.hbox_inputs.remove(channel.get_parent())
 447             self.channels = []
 448             self.output_channels = []
 449             self.channel_edit_input_menu = Gtk.Menu()
 450             self.channel_edit_input_menu_item.set_submenu(self.channel_edit_input_menu)
 451             self.channel_edit_input_menu_item.set_sensitive(False)
 452             self.channel_remove_input_menu = Gtk.Menu()
 453             self.channel_remove_input_menu_item.set_submenu(self.channel_remove_input_menu)
 454             self.channel_remove_input_menu_item.set_sensitive(False)
 455             self.channel_edit_output_menu = Gtk.Menu()
 456             self.channel_edit_output_menu_item.set_submenu(self.channel_edit_output_menu)
 457             self.channel_edit_output_menu_item.set_sensitive(False)
 458             self.channel_remove_output_menu = Gtk.Menu()
 459             self.channel_remove_output_menu_item.set_submenu(self.channel_remove_output_menu)
 460             self.channel_remove_output_menu_item.set_sensitive(False)
 461         dlg.destroy()
 462
 463     def add_channel(self, name, stereo, volume_cc, balance_cc, mute_cc, solo_cc, value):
 464         try:
 465             channel = InputChannel(self, name, stereo, value)
 466             self.add_channel_precreated(channel)
 467         except Exception:
 468             error_dialog(self.window, "Channel creation failed.")
 469             return
 470         if volume_cc != -1:
 471             channel.channel.volume_midi_cc = volume_cc
 472         else:
 473             channel.channel.autoset_volume_midi_cc()
 474         if balance_cc != -1:
 475             channel.channel.balance_midi_cc = balance_cc
 476         else:
 477             channel.channel.autoset_balance_midi_cc()
 478         if mute_cc != -1:
 479             channel.channel.mute_midi_cc = mute_cc
 480         else:
 481             channel.channel.autoset_mute_midi_cc()
 482         if solo_cc != -1:
 483             channel.channel.solo_midi_cc = solo_cc
 484         else:
 485             channel.channel.autoset_solo_midi_cc()
 486         return channel
 487
 488     def add_channel_precreated(self, channel):
 489         frame = Gtk.Frame()
 490         frame.add(channel)
 491         self.hbox_inputs.pack_start(frame, False, True, 0)
 492         channel.realize()
 493
 494         channel_edit_menu_item = Gtk.MenuItem(label=channel.channel_name)
 495         self.channel_edit_input_menu.append(channel_edit_menu_item)
 496         channel_edit_menu_item.connect("activate", self.on_edit_input_channel, channel)
 497         self.channel_edit_input_menu_item.set_sensitive(True)
 498
 499         channel_remove_menu_item = Gtk.MenuItem(label=channel.channel_name)
 500         self.channel_remove_input_menu.append(channel_remove_menu_item)
 501         channel_remove_menu_item.connect("activate", self.on_remove_input_channel, channel)
 502         self.channel_remove_input_menu_item.set_sensitive(True)
 503
 504         self.channels.append(channel)
 505
 506         for outputchannel in self.output_channels:
 507             channel.add_control_group(outputchannel)
 508
 509         # create post fader output channel matching the input channel
 510         channel.post_fader_output_channel = self.mixer.add_output_channel(
 511                         channel.channel.name + ' Out', channel.channel.is_stereo, True)
 512         channel.post_fader_output_channel.volume = 0
 513         channel.post_fader_output_channel.set_solo(channel.channel, True)
 514
 515     def read_meters(self):
 516         for channel in self.channels:
 517             channel.read_meter()
 518         for channel in self.output_channels:
 519             channel.read_meter()
 520         return True
 521
 522     def midi_events_check(self):
 523         for channel in self.channels + self.output_channels:
 524             channel.midi_events_check()
 525         return True
 526
 527     def add_output_channel(self, name, stereo, volume_cc, balance_cc, mute_cc,
 528             display_solo_buttons, color, value):
 529         try:
 530             channel = OutputChannel(self, name, stereo, value)
 531             channel.display_solo_buttons = display_solo_buttons
 532             channel.color = color
 533             self.add_output_channel_precreated(channel)
 534         except Exception:
 535             error_dialog(self.window, "Channel creation failed")
 536             return
 537
 538         if volume_cc != -1:
 539             channel.channel.volume_midi_cc = volume_cc
 540         else:
 541             channel.channel.autoset_volume_midi_cc()
 542         if balance_cc != -1:
 543             channel.channel.balance_midi_cc = balance_cc
 544         else:
 545             channel.channel.autoset_balance_midi_cc()
 546         if mute_cc != -1:
 547             channel.channel.mute_midi_cc = mute_cc
 548         else:
 549             channel.channel.autoset_mute_midi_cc()
 550
 551         return channel
 552
 553     def add_output_channel_precreated(self, channel):
 554         frame = Gtk.Frame()
 555         frame.add(channel)
 556         self.hbox_outputs.pack_end(frame, False, True, 0)
 557         self.hbox_outputs.reorder_child(frame, 0)
 558         channel.realize()
 559
 560         channel_edit_menu_item = Gtk.MenuItem(label=channel.channel_name)
 561         self.channel_edit_output_menu.append(channel_edit_menu_item)
 562         channel_edit_menu_item.connect("activate", self.on_edit_output_channel, channel)
 563         self.channel_edit_output_menu_item.set_sensitive(True)
 564
 565         channel_remove_menu_item = Gtk.MenuItem(label=channel.channel_name)
 566         self.channel_remove_output_menu.append(channel_remove_menu_item)
 567         channel_remove_menu_item.connect("activate", self.on_remove_output_channel, channel)
 568         self.channel_remove_output_menu_item.set_sensitive(True)
 569
 570         self.output_channels.append(channel)
 571
 572     _monitored_channel = None
 573     def get_monitored_channel(self):
 574         return self._monitored_channel
 575
 576     def set_monitored_channel(self, channel):
 577         if self._monitored_channel:
 578             if channel.channel.name == self._monitored_channel.channel.name:
 579                 return
 580         self._monitored_channel = channel
 581         if type(channel) is InputChannel:
 582             # reset all solo/mute settings
 583             for in_channel in self.channels:
 584                 self.monitor_channel.set_solo(in_channel.channel, False)
 585                 self.monitor_channel.set_muted(in_channel.channel, False)
 586             self.monitor_channel.set_solo(channel.channel, True)
 587             self.monitor_channel.prefader = True
 588         else:
 589             self.monitor_channel.prefader = False
 590         self.update_monitor(channel)
 591     monitored_channel = property(get_monitored_channel, set_monitored_channel)
 592
 593     def update_monitor(self, channel):
 594         if self.monitored_channel is not channel:
 595             return
 596         self.monitor_channel.volume = channel.channel.volume
 597         self.monitor_channel.balance = channel.channel.balance
 598         self.monitor_channel.out_mute = channel.channel.out_mute
 599         if type(self.monitored_channel) is OutputChannel:
 600             # sync solo/muted channels
 601             for input_channel in self.channels:
 602                 self.monitor_channel.set_solo(input_channel.channel,
 603                                 channel.channel.is_solo(input_channel.channel))
 604                 self.monitor_channel.set_muted(input_channel.channel,
 605                                 channel.channel.is_muted(input_channel.channel))
 606
 607     def get_input_channel_by_name(self, name):
 608         for input_channel in self.channels:
 609             if input_channel.channel.name == name:
 610                 return input_channel
 611         return None
 612
 613     def on_about(self, *args):
 614         about = Gtk.AboutDialog()
 615         about.set_name('jack_mixer')
 616         about.set_copyright('Copyright © 2006-2020\nNedko Arnaudov, Frédéric Péters, Arnout Engelen, Daniel Sheeler')
 617         about.set_license('''\
 618 jack_mixer is free software; you can redistribute it and/or modify it
 619 under the terms of the GNU General Public License as published by the
 620 Free Software Foundation; either version 2 of the License, or (at your
 621 option) any later version.
 622
 623 jack_mixer is distributed in the hope that it will be useful, but
 624 WITHOUT ANY WARRANTY; without even the implied warranty of
 625 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 626 General Public License for more details.
 627
 628 You should have received a copy of the GNU General Public License along
 629 with jack_mixer; if not, write to the Free Software Foundation, Inc., 51
 630 Franklin Street, Fifth Floor, Boston, MA 02110-130159 USA''')
 631         about.set_authors([
 632             'Nedko Arnaudov <nedko@arnaudov.name>',
 633             'Christopher Arndt <chris@chrisarndt.de>',
 634             'Arnout Engelen <arnouten@bzzt.net>',
 635             'John Hedges <john@drystone.co.uk>',
 636             'Olivier Humbert <trebmuh@tuxfamily.org>',
 637             'Sarah Mischke <sarah@spooky-online.de>',
 638             'Frédéric Péters <fpeters@0d.be>',
 639             'Daniel Sheeler <dsheeler@pobox.com>',
 640             'Athanasios Silis <athanasios.silis@gmail.com>',
 641         ])
 642         about.set_logo_icon_name('jack_mixer')
 643         about.set_website('https://rdio.space/jackmixer/')
 644
 645         about.run()
 646         about.destroy()
 647
 648     def save_to_xml(self, file):
 649         log.debug("Saving to XML...")
 650         b = XmlSerialization()
 651         s = Serializator()
 652         s.serialize(self, b)
 653         b.save(file)
 654
 655     def load_from_xml(self, file, silence_errors=False, from_nsm=False):
 656         log.debug("Loading from XML...")
 657         self.unserialized_channels = []
 658         b = XmlSerialization()
 659         try:
 660             b.load(file)
 661         except:
 662             if silence_errors:
 663                 return
 664             raise
 665         self.on_channels_clear(None)
 666         s = Serializator()
 667         s.unserialize(self, b)
 668         for channel in self.unserialized_channels:
 669             if isinstance(channel, InputChannel):
 670                 if self._init_solo_channels and channel.channel_name in self._init_solo_channels:
 671                     channel.solo = True
 672                 self.add_channel_precreated(channel)
 673         self._init_solo_channels = None
 674         for channel in self.unserialized_channels:
 675             if isinstance(channel, OutputChannel):
 676                 self.add_output_channel_precreated(channel)
 677         del self.unserialized_channels
 678         width, height = self.window.get_size()
 679         if self.visible or not from_nsm:
 680             self.window.show_all()
 681         self.paned.set_position(self.paned_position/self.width*width)
 682         self.window.resize(self.width, self.height)
 683
 684     def serialize(self, object_backend):
 685         width, height = self.window.get_size()
 686         object_backend.add_property('geometry',
 687                         '%sx%s' % (width, height))
 688         pos = self.paned.get_position()
 689         object_backend.add_property('paned_position', '%s' % pos)
 690         solo_channels = []
 691         for input_channel in self.channels:
 692             if input_channel.channel.solo:
 693                 solo_channels.append(input_channel)
 694         if solo_channels:
 695             object_backend.add_property('solo_channels', '|'.join([x.channel.name for x in solo_channels]))
 696         object_backend.add_property('visible', '%s' % str(self.visible))
 697
 698     def unserialize_property(self, name, value):
 699         if name == 'geometry':
 700             width, height = value.split('x')
 701             self.width = int(width)
 702             self.height = int(height)
 703             return True
 704         if name == 'solo_channels':
 705             self._init_solo_channels = value.split('|')
 706             return True
 707         if name == 'visible':
 708             self.visible = value == 'True'
 709             return True
 710         if name == 'paned_position':
 711             self.paned_position = int(value)
 712             return True
 713         return False
 714
 715     def unserialize_child(self, name):
 716         if name == InputChannel.serialization_name():
 717             channel = InputChannel(self, "", True)
 718             self.unserialized_channels.append(channel)
 719             return channel
 720
 721         if name == OutputChannel.serialization_name():
 722             channel = OutputChannel(self, "", True)
 723             self.unserialized_channels.append(channel)
 724             return channel
 725
 726         if name == gui.Factory.serialization_name():
 727             return self.gui_factory
 728
 729     def serialization_get_childs(self):
 730         '''Get child objects that required and support serialization'''
 731         childs = self.channels[:] + self.output_channels[:] + [self.gui_factory]
 732         return childs
 733
 734     def serialization_name(self):
 735         return "jack_mixer"
 736
 737     def main(self):
 738         if not self.mixer:
 739             return
 740
 741         if self.visible or self.nsm_client == None:
 742             width, height = self.window.get_size()
 743             self.window.show_all()
 744             if hasattr(self, 'paned_position'):
 745                 self.paned.set_position(self.paned_position/self.width*width)
 746
 747         signal.signal(signal.SIGUSR1, self.sighandler)
 748         signal.signal(signal.SIGTERM, self.sighandler)
 749         signal.signal(signal.SIGINT, self.sighandler)
 750         signal.signal(signal.SIGHUP, signal.SIG_IGN)
 751
 752         Gtk.main()
 753
 754 def error_dialog(parent, msg, *args):
 755     log.exception(msg, *args)
 756     err = Gtk.MessageDialog(parent=parent, modal=True, destroy_with_parent=True,
 757         message_type=Gtk.MessageType.ERROR, buttons=Gtk.ButtonsType.OK, text=msg % args)
 758     err.run()
 759     err.destroy()
 760
 761 def main():
 762     parser = ArgumentParser()
 763     parser.add_argument('-c', '--config', metavar="FILE", help='load mixer project configuration from FILE')
 764     parser.add_argument('-d', '--debug', action="store_true", help='enable debug logging messages')
 765     parser.add_argument('client_name', metavar='NAME', nargs='?', default='jack_mixer',
 766                         help='set JACK client name')
 767     args = parser.parse_args()
 768
 769     logging.basicConfig(level=logging.DEBUG if args.debug else logging.INFO,
 770                         format="%(levelname)s: %(message)s")
 771
 772     try:
 773         mixer = JackMixer(args.client_name)
 774     except Exception as e:
 775         error_dialog(None, "Mixer creation failed (%s).", e)
 776         sys.exit(1)
 777
 778     if not mixer.nsm_client and args.config:
 779         f = open(args.config)
 780         mixer.current_filename = args.config
 781
 782         try:
 783             mixer.load_from_xml(f)
 784         except Exception as e:
 785             error_dialog(mixer.window, "Failed loading settings (%s).", e)
 786
 787         mixer.window.set_default_size(60*(1+len(mixer.channels)+len(mixer.output_channels)), 300)
 788         f.close()
 789
 790     mixer.main()
 791
 792     mixer.cleanup()
 793
 794 if __name__ == "__main__":
 795     main()