jack_mixer.py

   1 #!/usr/bin/env python3
   2 # -*- coding: utf-8 -*-
   3 #
   4 # This file is part of jack_mixer
   5 #
   6 # Copyright (C) 2006-2009 Nedko Arnaudov <nedko@arnaudov.name>
   7 # Copyright (C) 2009 Frederic Peters <fpeters@0d.be>
   8 #
   9 # This program is free software; you can redistribute it and/or modify
  10 # it under the terms of the GNU General Public License as published by
  11 # the Free Software Foundation; version 2 of the License
  12 #
  13 # This program is distributed in the hope that it will be useful,
  14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 # GNU General Public License for more details.
  17 #
  18 # You should have received a copy of the GNU General Public License
  19 # along with this program; if not, write to the Free Software
  20 # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  21
  22 import logging
  23 import os
  24 import signal
  25 import sys
  26 from argparse import ArgumentParser
  27
  28 import gi
  29 gi.require_version('Gtk', '3.0')
  30 from gi.repository import Gtk
  31 from gi.repository import GObject
  32 from gi.repository import GLib
  33
  34 # temporary change Python modules lookup path to look into installation
  35 # directory ($prefix/share/jack_mixer/)
  36 old_path = sys.path
  37 sys.path.insert(0, os.path.join(os.path.dirname(sys.argv[0]), '..', 'share', 'jack_mixer'))
  38
  39 import jack_mixer_c
  40
  41 import gui
  42 import scale
  43 from channel import *
  44 from nsmclient import NSMClient
  45 from serialization_xml import XmlSerialization
  46 from serialization import SerializedObject, Serializator
  47 from preferences import PreferencesDialog
  48
  49 # restore Python modules lookup path
  50 sys.path = old_path
  51 log = logging.getLogger("jack_mixer")
  52
  53
  54 class JackMixer(SerializedObject):
  55
  56     # scales suitable as meter scales
  57     meter_scales = [scale.IEC268(), scale.Linear70dB(), scale.IEC268Minimalistic()]
  58
  59     # scales suitable as volume slider scales
  60     slider_scales = [scale.Linear30dB(), scale.Linear70dB()]
  61
  62     # name of settngs file that is currently open
  63     current_filename = None
  64
  65     _init_solo_channels = None
  66
  67     def __init__(self, client_name='jack_mixer'):
  68         self.visible = False
  69         self.nsm_client = None
  70
  71         if os.environ.get('NSM_URL'):
  72             self.nsm_client = NSMClient(prettyName = "jack_mixer",
  73                                         saveCallback = self.nsm_save_cb,
  74                                         openOrNewCallback = self.nsm_open_cb,
  75                                         supportsSaveStatus = False,
  76                                         hideGUICallback = self.nsm_hide_cb,
  77                                         showGUICallback = self.nsm_show_cb,
  78                                         exitProgramCallback = self.nsm_exit_cb,
  79                                         loggingLevel = "error",
  80                                        )
  81             self.nsm_client.announceGuiVisibility(self.visible)
  82         else:
  83
  84             self.visible = True
  85             self.create_mixer(client_name, with_nsm = False)
  86
  87     def create_mixer(self, client_name, with_nsm = True):
  88         self.create_ui(with_nsm)
  89         self.mixer = jack_mixer_c.Mixer(client_name)
  90         if not self.mixer:
  91             sys.exit(1)
  92
  93         self.window.set_title(client_name)
  94
  95         self.monitor_channel = self.mixer.add_output_channel("Monitor", True, True)
  96         self.save = False
  97
  98         GLib.timeout_add(80, self.read_meters)
  99         if with_nsm:
 100             GLib.timeout_add(200, self.nsm_react)
 101         GLib.timeout_add(50, self.midi_events_check)
 102
 103     def new_menu_item(self, title, callback=None, accel=None, enabled=True):
 104         menuitem = Gtk.MenuItem.new_with_mnemonic(title)
 105         menuitem.set_sensitive(enabled)
 106         if callback:
 107             menuitem.connect("activate", callback)
 108         if accel:
 109             key, mod = Gtk.accelerator_parse(accel)
 110             menuitem.add_accelerator("activate", self.menu_accelgroup, key, mod,
 111                                      Gtk.AccelFlags.VISIBLE)
 112         return menuitem
 113
 114     def create_ui(self, with_nsm):
 115         self.channels = []
 116         self.output_channels = []
 117         self.window = Gtk.Window(type=Gtk.WindowType.TOPLEVEL)
 118         self.window.set_icon_name('jack_mixer')
 119         self.gui_factory = gui.Factory(self.window, self.meter_scales, self.slider_scales)
 120         self.gui_factory.connect('midi-behavior-mode-changed', self.on_midi_behavior_mode_changed)
 121         self.vbox_top = Gtk.VBox()
 122         self.window.add(self.vbox_top)
 123
 124         self.menu_accelgroup = Gtk.AccelGroup()
 125         self.window.add_accel_group(self.menu_accelgroup)
 126
 127         self.menubar = Gtk.MenuBar()
 128         self.vbox_top.pack_start(self.menubar, False, True, 0)
 129
 130         mixer_menu_item = Gtk.MenuItem.new_with_mnemonic("_Mixer")
 131         self.menubar.append(mixer_menu_item)
 132         edit_menu_item = Gtk.MenuItem.new_with_mnemonic('_Edit')
 133         self.menubar.append(edit_menu_item)
 134         help_menu_item = Gtk.MenuItem.new_with_mnemonic('_Help')
 135         self.menubar.append(help_menu_item)
 136
 137         self.width = 420
 138         self.height = 420
 139         self.window.set_default_size(self.width, self.height)
 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         width, height = self.window.get_size()
 237         self.window.show_all()
 238         self.paned.set_position(self.paned_position/self.width*width)
 239
 240         self.visible = True
 241         self.nsm_client.announceGuiVisibility(True)
 242
 243     def nsm_open_cb(self, path, session_name, client_name):
 244         self.create_mixer(client_name, with_nsm = True)
 245         self.current_filename = path + '.xml'
 246         if os.path.isfile(self.current_filename):
 247             f = open(self.current_filename, 'r')
 248             self.load_from_xml(f, from_nsm=True)
 249             f.close()
 250         else:
 251             f = open(self.current_filename, 'w')
 252             f.close()
 253
 254     def nsm_save_cb(self, path, session_name, client_name):
 255         self.current_filename = path + '.xml'
 256         f = open(self.current_filename, 'w')
 257         self.save_to_xml(f)
 258         f.close()
 259
 260     def nsm_exit_cb(self, path, session_name, client_name):
 261         Gtk.main_quit()
 262
 263     def on_midi_behavior_mode_changed(self, gui_factory, value):
 264         self.mixer.midi_behavior_mode = value
 265
 266     def on_delete_event(self, widget, event):
 267         return False
 268
 269     def sighandler(self, signum, frame):
 270         log.debug("Signal %d received.", signum)
 271         if signum == signal.SIGUSR1:
 272             self.save = True
 273         elif signum == signal.SIGTERM:
 274             Gtk.main_quit()
 275         elif signum == signal.SIGINT:
 276             Gtk.main_quit()
 277         else:
 278             log.warning("Unknown signal %d received.", signum)
 279
 280     def cleanup(self):
 281         log.debug("Cleaning jack_mixer.")
 282         if not self.mixer:
 283             return
 284
 285         for channel in self.channels:
 286             channel.unrealize()
 287
 288         self.mixer.destroy()
 289
 290     def on_open_cb(self, *args):
 291         dlg = Gtk.FileChooserDialog(title='Open', parent=self.window,
 292                         action=Gtk.FileChooserAction.OPEN)
 293         dlg.add_buttons(Gtk.STOCK_CANCEL, Gtk.ResponseType.CANCEL,
 294                         Gtk.STOCK_OPEN, Gtk.ResponseType.OK)
 295         dlg.set_default_response(Gtk.ResponseType.OK)
 296         if dlg.run() == Gtk.ResponseType.OK:
 297             filename = dlg.get_filename()
 298             try:
 299                 f = open(filename, 'r')
 300                 self.load_from_xml(f)
 301             except Exception as e:
 302                 error_dialog(self.window, "Failed loading settings (%s)", e)
 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 = NewInputChannelDialog(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         log.debug('Editing input 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         log.debug('Removing input 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 not self.channels:
 386             self.channel_edit_input_menu_item.set_sensitive(False)
 387             self.channel_remove_input_menu_item.set_sensitive(False)
 388
 389     def on_edit_output_channel(self, widget, channel):
 390         log.debug('Editing output channel "%s".', channel.channel_name)
 391         channel.on_channel_properties()
 392
 393     def remove_channel_edit_output_menuitem_by_label(self, widget, label):
 394         if (widget.get_label() == label):
 395             self.channel_edit_output_menu.remove(widget)
 396
 397     def on_remove_output_channel(self, widget, channel):
 398         log.debug('Removing output channel "%s".', channel.channel_name)
 399         self.channel_remove_output_menu.remove(widget)
 400         self.channel_edit_output_menu.foreach(
 401             self.remove_channel_edit_output_menuitem_by_label,
 402             channel.channel_name);
 403         if self.monitored_channel is channel:
 404             channel.monitor_button.set_active(False)
 405         for i in range(len(self.channels)):
 406             if self.output_channels[i] is channel:
 407                 channel.unrealize()
 408                 del self.output_channels[i]
 409                 self.hbox_outputs.remove(channel.get_parent())
 410                 break
 411         if not self.output_channels:
 412             self.channel_edit_output_menu_item.set_sensitive(False)
 413             self.channel_remove_output_menu_item.set_sensitive(False)
 414
 415     def rename_channels(self, container, parameters):
 416         if (container.get_label() == parameters['oldname']):
 417             container.set_label(parameters['newname'])
 418
 419     def on_channel_rename(self, oldname, newname):
 420         rename_parameters = { 'oldname' : oldname, 'newname' : newname }
 421         self.channel_edit_input_menu.foreach(self.rename_channels,
 422             rename_parameters)
 423         self.channel_edit_output_menu.foreach(self.rename_channels,
 424             rename_parameters)
 425         self.channel_remove_input_menu.foreach(self.rename_channels,
 426             rename_parameters)
 427         self.channel_remove_output_menu.foreach(self.rename_channels,
 428             rename_parameters)
 429         log.debug('Renaming channel from "%s" to "%s".', oldname, newname)
 430
 431     def on_channels_clear(self, widget):
 432         dlg = Gtk.MessageDialog(parent = self.window,
 433                 modal = True,
 434                 message_type = Gtk.MessageType.WARNING,
 435                 text = "Are you sure you want to clear all channels?",
 436                 buttons = Gtk.ButtonsType.OK_CANCEL)
 437         if not widget or dlg.run() == Gtk.ResponseType.OK:
 438             for channel in self.output_channels:
 439                 channel.unrealize()
 440                 self.hbox_outputs.remove(channel.get_parent())
 441             for channel in self.channels:
 442                 channel.unrealize()
 443                 self.hbox_inputs.remove(channel.get_parent())
 444             self.channels = []
 445             self.output_channels = []
 446             self.channel_edit_input_menu = Gtk.Menu()
 447             self.channel_edit_input_menu_item.set_submenu(self.channel_edit_input_menu)
 448             self.channel_edit_input_menu_item.set_sensitive(False)
 449             self.channel_remove_input_menu = Gtk.Menu()
 450             self.channel_remove_input_menu_item.set_submenu(self.channel_remove_input_menu)
 451             self.channel_remove_input_menu_item.set_sensitive(False)
 452             self.channel_edit_output_menu = Gtk.Menu()
 453             self.channel_edit_output_menu_item.set_submenu(self.channel_edit_output_menu)
 454             self.channel_edit_output_menu_item.set_sensitive(False)
 455             self.channel_remove_output_menu = Gtk.Menu()
 456             self.channel_remove_output_menu_item.set_submenu(self.channel_remove_output_menu)
 457             self.channel_remove_output_menu_item.set_sensitive(False)
 458         dlg.destroy()
 459
 460     def add_channel(self, name, stereo, volume_cc, balance_cc, mute_cc, solo_cc, value):
 461         try:
 462             channel = InputChannel(self, name, stereo, value)
 463             self.add_channel_precreated(channel)
 464         except Exception:
 465             error_dialog(self.window, "Channel creation failed.")
 466             return
 467         if volume_cc != -1:
 468             channel.channel.volume_midi_cc = volume_cc
 469         else:
 470             channel.channel.autoset_volume_midi_cc()
 471         if balance_cc != -1:
 472             channel.channel.balance_midi_cc = balance_cc
 473         else:
 474             channel.channel.autoset_balance_midi_cc()
 475         if mute_cc != -1:
 476             channel.channel.mute_midi_cc = mute_cc
 477         else:
 478             channel.channel.autoset_mute_midi_cc()
 479         if solo_cc != -1:
 480             channel.channel.solo_midi_cc = solo_cc
 481         else:
 482             channel.channel.autoset_solo_midi_cc()
 483         return channel
 484
 485     def add_channel_precreated(self, channel):
 486         frame = Gtk.Frame()
 487         frame.add(channel)
 488         self.hbox_inputs.pack_start(frame, False, True, 0)
 489         channel.realize()
 490
 491         channel_edit_menu_item = Gtk.MenuItem(label=channel.channel_name)
 492         self.channel_edit_input_menu.append(channel_edit_menu_item)
 493         channel_edit_menu_item.connect("activate", self.on_edit_input_channel, channel)
 494         self.channel_edit_input_menu_item.set_sensitive(True)
 495
 496         channel_remove_menu_item = Gtk.MenuItem(label=channel.channel_name)
 497         self.channel_remove_input_menu.append(channel_remove_menu_item)
 498         channel_remove_menu_item.connect("activate", self.on_remove_input_channel, channel)
 499         self.channel_remove_input_menu_item.set_sensitive(True)
 500
 501         self.channels.append(channel)
 502
 503         for outputchannel in self.output_channels:
 504             channel.add_control_group(outputchannel)
 505
 506         # create post fader output channel matching the input channel
 507         channel.post_fader_output_channel = self.mixer.add_output_channel(
 508                         channel.channel.name + ' Out', channel.channel.is_stereo, True)
 509         channel.post_fader_output_channel.volume = 0
 510         channel.post_fader_output_channel.set_solo(channel.channel, True)
 511
 512     def read_meters(self):
 513         for channel in self.channels:
 514             channel.read_meter()
 515         for channel in self.output_channels:
 516             channel.read_meter()
 517         return True
 518
 519     def midi_events_check(self):
 520         for channel in self.channels + self.output_channels:
 521             channel.midi_events_check()
 522         return True
 523
 524     def add_output_channel(self, name, stereo, volume_cc, balance_cc, mute_cc,
 525             display_solo_buttons, color, value):
 526         try:
 527             channel = OutputChannel(self, name, stereo, value)
 528             channel.display_solo_buttons = display_solo_buttons
 529             channel.color = color
 530             self.add_output_channel_precreated(channel)
 531         except Exception:
 532             error_dialog(self.window, "Channel creation failed")
 533             return
 534
 535         if volume_cc != -1:
 536             channel.channel.volume_midi_cc = volume_cc
 537         else:
 538             channel.channel.autoset_volume_midi_cc()
 539         if balance_cc != -1:
 540             channel.channel.balance_midi_cc = balance_cc
 541         else:
 542             channel.channel.autoset_balance_midi_cc()
 543         if mute_cc != -1:
 544             channel.channel.mute_midi_cc = mute_cc
 545         else:
 546             channel.channel.autoset_mute_midi_cc()
 547
 548         return channel
 549
 550     def add_output_channel_precreated(self, channel):
 551         frame = Gtk.Frame()
 552         frame.add(channel)
 553         self.hbox_outputs.pack_end(frame, False, True, 0)
 554         self.hbox_outputs.reorder_child(frame, 0)
 555         channel.realize()
 556
 557         channel_edit_menu_item = Gtk.MenuItem(label=channel.channel_name)
 558         self.channel_edit_output_menu.append(channel_edit_menu_item)
 559         channel_edit_menu_item.connect("activate", self.on_edit_output_channel, channel)
 560         self.channel_edit_output_menu_item.set_sensitive(True)
 561
 562         channel_remove_menu_item = Gtk.MenuItem(label=channel.channel_name)
 563         self.channel_remove_output_menu.append(channel_remove_menu_item)
 564         channel_remove_menu_item.connect("activate", self.on_remove_output_channel, channel)
 565         self.channel_remove_output_menu_item.set_sensitive(True)
 566
 567         self.output_channels.append(channel)
 568
 569     _monitored_channel = None
 570     def get_monitored_channel(self):
 571         return self._monitored_channel
 572
 573     def set_monitored_channel(self, channel):
 574         if self._monitored_channel:
 575             if channel.channel.name == self._monitored_channel.channel.name:
 576                 return
 577         self._monitored_channel = channel
 578         if type(channel) is InputChannel:
 579             # reset all solo/mute settings
 580             for in_channel in self.channels:
 581                 self.monitor_channel.set_solo(in_channel.channel, False)
 582                 self.monitor_channel.set_muted(in_channel.channel, False)
 583             self.monitor_channel.set_solo(channel.channel, True)
 584             self.monitor_channel.prefader = True
 585         else:
 586             self.monitor_channel.prefader = False
 587         self.update_monitor(channel)
 588     monitored_channel = property(get_monitored_channel, set_monitored_channel)
 589
 590     def update_monitor(self, channel):
 591         if self.monitored_channel is not channel:
 592             return
 593         self.monitor_channel.volume = channel.channel.volume
 594         self.monitor_channel.balance = channel.channel.balance
 595         self.monitor_channel.out_mute = channel.channel.out_mute
 596         if type(self.monitored_channel) is OutputChannel:
 597             # sync solo/muted channels
 598             for input_channel in self.channels:
 599                 self.monitor_channel.set_solo(input_channel.channel,
 600                                 channel.channel.is_solo(input_channel.channel))
 601                 self.monitor_channel.set_muted(input_channel.channel,
 602                                 channel.channel.is_muted(input_channel.channel))
 603
 604     def get_input_channel_by_name(self, name):
 605         for input_channel in self.channels:
 606             if input_channel.channel.name == name:
 607                 return input_channel
 608         return None
 609
 610     def on_about(self, *args):
 611         about = Gtk.AboutDialog()
 612         about.set_name('jack_mixer')
 613         about.set_copyright('Copyright © 2006-2020\nNedko Arnaudov, Frédéric Péters, Arnout Engelen, Daniel Sheeler')
 614         about.set_license('''\
 615 jack_mixer is free software; you can redistribute it and/or modify it
 616 under the terms of the GNU General Public License as published by the
 617 Free Software Foundation; either version 2 of the License, or (at your
 618 option) any later version.
 619
 620 jack_mixer is distributed in the hope that it will be useful, but
 621 WITHOUT ANY WARRANTY; without even the implied warranty of
 622 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 623 General Public License for more details.
 624
 625 You should have received a copy of the GNU General Public License along
 626 with jack_mixer; if not, write to the Free Software Foundation, Inc., 51
 627 Franklin Street, Fifth Floor, Boston, MA 02110-130159 USA''')
 628         about.set_authors([
 629             'Nedko Arnaudov <nedko@arnaudov.name>',
 630             'Christopher Arndt <chris@chrisarndt.de>',
 631             'Arnout Engelen <arnouten@bzzt.net>',
 632             'John Hedges <john@drystone.co.uk>',
 633             'Olivier Humbert <trebmuh@tuxfamily.org>',
 634             'Sarah Mischke <sarah@spooky-online.de>',
 635             'Frédéric Péters <fpeters@0d.be>',
 636             'Daniel Sheeler <dsheeler@pobox.com>',
 637             'Athanasios Silis <athanasios.silis@gmail.com>',
 638         ])
 639         about.set_logo_icon_name('jack_mixer')
 640         about.set_website('https://rdio.space/jackmixer/')
 641
 642         about.run()
 643         about.destroy()
 644
 645     def save_to_xml(self, file):
 646         log.debug("Saving to XML...")
 647         b = XmlSerialization()
 648         s = Serializator()
 649         s.serialize(self, b)
 650         b.save(file)
 651
 652     def load_from_xml(self, file, silence_errors=False, from_nsm=False):
 653         log.debug("Loading from XML...")
 654         self.unserialized_channels = []
 655         b = XmlSerialization()
 656         try:
 657             b.load(file)
 658         except:
 659             if silence_errors:
 660                 return
 661             raise
 662         self.on_channels_clear(None)
 663         s = Serializator()
 664         s.unserialize(self, b)
 665         for channel in self.unserialized_channels:
 666             if isinstance(channel, InputChannel):
 667                 if self._init_solo_channels and channel.channel_name in self._init_solo_channels:
 668                     channel.solo = True
 669                 self.add_channel_precreated(channel)
 670         self._init_solo_channels = None
 671         for channel in self.unserialized_channels:
 672             if isinstance(channel, OutputChannel):
 673                 self.add_output_channel_precreated(channel)
 674         del self.unserialized_channels
 675         width, height = self.window.get_size()
 676         if self.visible or not from_nsm:
 677             self.window.show_all()
 678         self.paned.set_position(self.paned_position/self.width*width)
 679         self.window.resize(self.width, self.height)
 680
 681     def serialize(self, object_backend):
 682         width, height = self.window.get_size()
 683         object_backend.add_property('geometry',
 684                         '%sx%s' % (width, height))
 685         pos = self.paned.get_position()
 686         object_backend.add_property('paned_position', '%s' % pos)
 687         solo_channels = []
 688         for input_channel in self.channels:
 689             if input_channel.channel.solo:
 690                 solo_channels.append(input_channel)
 691         if solo_channels:
 692             object_backend.add_property('solo_channels', '|'.join([x.channel.name for x in solo_channels]))
 693         object_backend.add_property('visible', '%s' % str(self.visible))
 694
 695     def unserialize_property(self, name, value):
 696         if name == 'geometry':
 697             width, height = value.split('x')
 698             self.width = int(width)
 699             self.height = int(height)
 700             return True
 701         if name == 'solo_channels':
 702             self._init_solo_channels = value.split('|')
 703             return True
 704         if name == 'visible':
 705             self.visible = value == 'True'
 706             return True
 707         if name == 'paned_position':
 708             self.paned_position = int(value)
 709             return True
 710         return False
 711
 712     def unserialize_child(self, name):
 713         if name == InputChannel.serialization_name():
 714             channel = InputChannel(self, "", True)
 715             self.unserialized_channels.append(channel)
 716             return channel
 717
 718         if name == OutputChannel.serialization_name():
 719             channel = OutputChannel(self, "", True)
 720             self.unserialized_channels.append(channel)
 721             return channel
 722
 723         if name == gui.Factory.serialization_name():
 724             return self.gui_factory
 725
 726     def serialization_get_childs(self):
 727         '''Get child objects that required and support serialization'''
 728         childs = self.channels[:] + self.output_channels[:] + [self.gui_factory]
 729         return childs
 730
 731     def serialization_name(self):
 732         return "jack_mixer"
 733
 734     def main(self):
 735         if not self.mixer:
 736             return
 737
 738         if self.visible or self.nsm_client == None:
 739             width, height = self.window.get_size()
 740             self.window.show_all()
 741             if hasattr(self, 'paned_position'):
 742                 self.paned.set_position(self.paned_position/self.width*width)
 743
 744         signal.signal(signal.SIGUSR1, self.sighandler)
 745         signal.signal(signal.SIGTERM, self.sighandler)
 746         signal.signal(signal.SIGINT, self.sighandler)
 747         signal.signal(signal.SIGHUP, signal.SIG_IGN)
 748
 749         Gtk.main()
 750
 751 def error_dialog(parent, msg, *args):
 752     log.exception(msg, *args)
 753     err = Gtk.MessageDialog(parent=parent, modal=True, destroy_with_parent=True,
 754         message_type=Gtk.MessageType.ERROR, buttons=Gtk.ButtonsType.OK, text=msg % args)
 755     err.run()
 756     err.destroy()
 757
 758 def main():
 759     parser = ArgumentParser()
 760     parser.add_argument('-c', '--config', metavar="FILE", help='load mixer project configuration from FILE')
 761     parser.add_argument('-d', '--debug', action="store_true", help='enable debug logging messages')
 762     parser.add_argument('client_name', metavar='NAME', nargs='?', default='jack_mixer',
 763                         help='set JACK client name')
 764     args = parser.parse_args()
 765
 766     logging.basicConfig(level=logging.DEBUG if args.debug else logging.INFO,
 767                         format="%(levelname)s: %(message)s")
 768
 769     try:
 770         mixer = JackMixer(args.client_name)
 771     except Exception as e:
 772         error_dialog(None, "Mixer creation failed (%s).", e)
 773         sys.exit(1)
 774
 775     if not mixer.nsm_client and args.config:
 776         f = open(args.config)
 777         mixer.current_filename = args.config
 778
 779         try:
 780             mixer.load_from_xml(f)
 781         except Exception as e:
 782             error_dialog(mixer.window, "Failed loading settings (%s).", e)
 783
 784         mixer.window.set_default_size(60*(1+len(mixer.channels)+len(mixer.output_channels)), 300)
 785         f.close()
 786
 787     mixer.main()
 788
 789     mixer.cleanup()
 790
 791 if __name__ == "__main__":
 792     main()