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1 # -*- Mode: Python -*- 2 # vi:si:et:sw=4:sts=4:ts=4 3 # 4 # Flumotion - a streaming media server 5 # Copyright (C) 2004,2005,2006,2007,2008 Fluendo, S.L. (www.fluendo.com). 6 # All rights reserved. 7 8 # This file may be distributed and/or modified under the terms of 9 # the GNU General Public License version 2 as published by 10 # the Free Software Foundation. 11 # This file is distributed without any warranty; without even the implied 12 # warranty of merchantability or fitness for a particular purpose. 13 # See "LICENSE.GPL" in the source distribution for more information. 14 15 # Licensees having purchased or holding a valid Flumotion Advanced 16 # Streaming Server license may use this file in accordance with the 17 # Flumotion Advanced Streaming Server Commercial License Agreement. 18 # See "LICENSE.Flumotion" in the source distribution for more information. 19 20 # Headers in this file shall remain intact. 21 22 from gettext import gettext as _ 23 24 import gtk 25 import os 26 import math 27 28 # import custom glade handler 29 from flumotion.ui import glade 30 from flumotion.ui.fvumeter import FVUMeter 31 from flumotion.component.base.effectsnode import EffectAdminGtkNode 32 33 __version__ = "$Rev: 7162 $" 34 35 42 4345 logCategory = 'volume' 46 gladeFile = os.path.join('flumotion', 'component', 'effects', 47 'volume', 'volume.glade') 48 49 uiStateHandlers = None 5019952 self.widget = self.wtree.get_widget('volume-widget') 53 self.level_widgets = [] 54 self._volume_set_label = self.wtree.get_widget('volume-set-label') 55 self._volume_set_label.set_text('0') 56 self.shown = False 57 58 # now do the callbacks for the volume setting 59 self._hscale = self.wtree.get_widget('volume-set-hscale') 60 self._scale_changed_id = self._hscale.connect('value_changed', 61 self.cb_volume_set) 62 self._hscale.set_sensitive(False) 63 # callback for checkbutton 64 check = self.wtree.get_widget('volume-set-check') 65 check.set_sensitive(False) 66 check.connect('toggled', self._check_toggled_cb) 67 changeLabel = self.wtree.get_widget('volume-change-label') 68 changeLabel.set_sensitive(False)6971 EffectAdminGtkNode.setUIState(self, state) 72 if not self.uiStateHandlers: 73 self.uiStateHandlers = {'volume-volume': self.volumeSet, 74 'volume-peak': self.peakSet, 75 'volume-decay': self.decaySet} 76 for k, handler in self.uiStateHandlers.items(): 77 handler(state.get(k)) 78 # volume-allow-increase is static for lifetime of component 79 # for soundcard it is false, for others that have a gst volume 80 # element it is true 81 if state.get("volume-allow-increase"): 82 check = self.wtree.get_widget('volume-set-check') 83 if check is not None: 84 check.set_sensitive(True) 85 if state.get("volume-allow-set"): 86 self._hscale.set_sensitive(True) 87 changeLabel = self.wtree.get_widget('volume-change-label') 88 if changeLabel is not None: 89 changeLabel.set_sensitive(True)9092 """ 93 This method dynamically creates labels and level meters for channels 94 that currently do not have level meters. The glade file no longer 95 contains the labels or the level meters. Also the table size in the 96 glade file is set to 50 and the widgets inside the table that are 97 statically configured have a bottom y of 50 allowing about 23 channels 98 in the audio. 99 100 @param numchannels: total number of channels there is volume data for 101 """ 102 if numchannels > len(self.level_widgets): 103 totalLevelWidgets = len(self.level_widgets) 104 for chan in range(totalLevelWidgets, numchannels): 105 levelWidget = FVUMeter() 106 levelLabel = gtk.Label() 107 if chan == 0 and numchannels > 1: 108 levelLabel.set_text(_("Left channel level:")) 109 elif numchannels == 1: 110 levelLabel.set_text(_("Mono channel level:")) 111 elif chan == 1: 112 levelLabel.set_text(_("Right channel level:")) 113 else: 114 levelLabel.set_text(_("Channel %d level:") % chan) 115 levelLabel.set_property("xpad", 0) 116 levelLabel.set_property("ypad", 0) 117 levelLabel.set_property("xalign", 0) 118 levelLabel.set_property("yalign", 0.5) 119 levelLabel.set_justify(gtk.JUSTIFY_LEFT) 120 self.widget.attach(levelLabel, 0, 1, chan * 2, chan * 2 + 1, 121 xoptions=gtk.FILL, yoptions=0, xpadding=3, ypadding=3) 122 self.widget.attach(levelWidget, 0, 1, chan * 2 + 1, 123 chan * 2 + 2, yoptions=gtk.FILL, 124 xpadding=6, ypadding=3) 125 levelLabel.show() 126 levelWidget.show() 127 self.level_widgets.append(levelWidget)128130 if len(peak) > len(self.level_widgets): 131 self._createEnoughLevelWidgets(len(peak)) 132 for i in range(0, len(peak)): 133 self.level_widgets[i].set_property('peak', 134 clamp(peak[i], -90.0, 0.0))135137 if len(decay) > len(self.level_widgets): 138 self._createEnoughLevelWidgets(len(decay)) 139 for i in range(0, len(decay)): 140 self.level_widgets[i].set_property('decay', 141 clamp(decay[i], -90.0, 0.0))142 143 # when volume has been set by another admin client 144146 self._hscale.handler_block(self._scale_changed_id) 147 148 # Ensure that the scale has an adjustment. 149 # This is not a proper solution to a problem that 150 # can be when switching components, but it avoids an 151 # unexpected segfault in set_value which expects 152 # range->adjustment to be non-NULL 153 self._hscale.get_adjustment() 154 155 self._hscale.set_value(volume) 156 self.debug("volume: %f", volume) 157 dB = "- inf" 158 if volume: 159 dB = "%2.2f" % (20.0 * math.log10(volume)) 160 self._volume_set_label.set_text(dB) 161 self._hscale.handler_unblock(self._scale_changed_id)162 167 168 # run when the scale is moved by user 169171 # do something 172 volume = self._hscale.get_value() 173 #self.volumeSet(volume) 174 d = self.effectCallRemote("setVolume", volume) 175 d.addErrback(self.setVolumeErrback)176178 self.warning("Failure %s setting volume: %s" % ( 179 failure.type, failure.getErrorMessage())) 180 return None181 185 186 # when the "increase volume" checkbutton is toggled 187
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