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# Copyright (C) 2008 by Arnold Krille |
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# |
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# This file is part of FFADO |
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# FFADO = Free Firewire (pro-)audio drivers for linux |
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# |
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# FFADO is based upon FreeBoB. |
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# |
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# This program is free software: you can redistribute it and/or modify |
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# it under the terms of the GNU General Public License as published by |
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# the Free Software Foundation, either version 2 of the License, or |
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# (at your option) version 3 of the License. |
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# |
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# This program is distributed in the hope that it will be useful, |
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# but WITHOUT ANY WARRANTY; without even the implied warranty of |
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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# GNU General Public License for more details. |
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# |
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# You should have received a copy of the GNU General Public License |
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# along with this program. If not, see <http://www.gnu.org/licenses/>. |
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# |
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from PyQt4.QtCore import QObject, pyqtSignature |
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from PyQt4.QtGui import QWidget, QMessageBox |
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from ffado.config import * |
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import logging |
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log = logging.getLogger('global') |
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class GlobalMixer(QWidget): |
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def __init__(self, parent, name=None): |
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QWidget.__init__(self, parent) |
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uicLoad("ffado/mixer/globalmixer", self) |
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self.setName(name) |
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def setName(self,name): |
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if name is not None: |
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self.lblName.setText(name) |
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self.lblName.show() |
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else: |
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self.lblName.hide() |
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@pyqtSignature("int") |
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def on_clocksource_activated( self, clock ): |
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#log.debug("updateClockSource( " + str(clock) + " )") |
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if self.clockselect.canChangeValue(): |
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self.clockselect.select( clock ) |
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else: |
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msg = QMessageBox() |
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msg.question( msg, "Error", \ |
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"<qt>Clock source change not permitted. Is streaming active?</qt>", \ |
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QMessageBox.Ok ) |
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self.clocksource.setEnabled(False) |
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return |
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selected = self.clockselect.selected() |
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if selected != clock: |
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clockname = self.clockselect.getEnumLabel( clock ) |
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msg = QMessageBox() |
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msg.question( msg, "Failed to select clock source", \ |
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"<qt>Could not select %s as clock source.</qt>" % clockname, \ |
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QMessageBox.Ok ) |
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self.clocksource.setCurrentIndex( selected ) |
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@pyqtSignature("int") |
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def on_samplerate_activated( self, sr ): |
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log.debug("on_samplerate_activated( " + str(sr) + " )") |
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# If there's no clock, don't bother trying to set the sample rate |
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if (self.no_clock == 1): |
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return |
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if self.samplerateselect.canChangeValue(): |
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self.samplerateselect.select( sr ) |
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if 'onSamplerateChange' in dir(self): |
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self.onSamplerateChange() |
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log.debug("Mixer configuration updated") |
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else: |
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msg = QMessageBox() |
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msg.question( msg, "Error", \ |
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"<qt>Sample rate change not permitted. Is streaming active?</qt>", \ |
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QMessageBox.Ok ) |
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self.samplerate.setEnabled(False) |
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return |
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selected = self.samplerateselect.selected() |
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if selected != sr: |
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srname = self.samplerateselect.getEnumLabel( sr ) |
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msg = QMessageBox() |
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msg.question( msg, "Failed to select sample rate", \ |
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"<qt>Could not select %s as samplerate.</qt>" % srname, \ |
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QMessageBox.Ok ) |
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self.samplerate.setCurrentIndex( selected ) |
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@pyqtSignature("") |
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def on_txtNickname_returnPressed( self ): |
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if self.nickname.canChangeValue(): |
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asciiData = self.txtNickname.text().toAscii() |
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self.nickname.setText( asciiData.data() ) |
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else: |
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self.txtNickname.setText( self.nickname.text() ) |
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def refreshSampleRates( self ): |
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no_clock_status = 0 |
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n_rates = self.samplerateselect.count() |
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if (n_rates<1 or self.samplerateselect.getEnumLabel(0)=="0"): |
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no_clock_status = 1; |
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# Except for changes to the "no clock" status (where the number of |
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# "frequencies" can remain at 1), the following test won't account |
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# for cases where the frequency list changes but the total number of |
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# frequencies remains the same. If a device comes along for which |
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# this is a problem, an alternative approach will be needed. |
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if (no_clock_status!=self.no_clock or n_rates!=self.num_rates): |
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self.no_clock = 0; |
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self.num_rates = n_rates |
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self.samplerate.clear() |
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for i in range( self.num_rates ): |
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label = self.samplerateselect.getEnumLabel( i ) |
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if (label == "0"): |
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label = "No clock found"; |
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self.no_clock = 1; |
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self.samplerate.insertItem( self.num_rates, label ) |
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if (self.no_clock != 1): |
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self.samplerate.setCurrentIndex( self.samplerateselect.selected() ) |
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else: |
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self.samplerate.setCurrentIndex(0); |
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def initValues( self ): |
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#print "GlobalMixer::initValues()" |
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nb_clocks = self.clockselect.count() |
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for i in range( nb_clocks ): |
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self.clocksource.insertItem( nb_clocks, self.clockselect.getEnumLabel( i ) ) |
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self.clocksource.setCurrentIndex( self.clockselect.selected() ) |
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self.no_clock = 0; |
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self.num_rates = -1; |
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self.refreshSampleRates(); |
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self.txtNickname.setText( self.nickname.text() ) |
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self.samplerate.setEnabled(self.samplerateselect.canChangeValue()) |
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self.clocksource.setEnabled(self.clockselect.canChangeValue()) |
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if self.nickname.canChangeValue(): |
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self.txtNickname.setEnabled(True) |
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else: |
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self.txtNickname.setEnabled(False) |
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self.streaming_status = self.streamingstatus.selected() |
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def polledUpdate(self): |
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self.samplerate.setEnabled(self.samplerateselect.canChangeValue()) |
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self.clocksource.setEnabled(self.clockselect.canChangeValue()) |
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self.txtNickname.setEnabled(self.nickname.canChangeValue()) |
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ss = self.streamingstatus.selected() |
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ss_txt = self.streamingstatus.getEnumLabel(ss) |
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if ss_txt == 'Idle': |
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self.chkStreamIn.setChecked(False) |
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self.chkStreamOut.setChecked(False) |
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elif ss_txt == 'Sending': |
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self.chkStreamIn.setChecked(False) |
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self.chkStreamOut.setChecked(True) |
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elif ss_txt == 'Receiving': |
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self.chkStreamIn.setChecked(True) |
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self.chkStreamOut.setChecked(False) |
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elif ss_txt == 'Both': |
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self.chkStreamIn.setChecked(True) |
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self.chkStreamOut.setChecked(True) |
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if (ss!=self.streaming_status and ss_txt!='Idle'): |
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sr = self.samplerate.currentIndex() |
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self.samplerate.setCurrentIndex( self.samplerateselect.selected() ) |
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# Check (and update) if device configuration needs to be updated |
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if ( self.samplerateselect.devConfigChanged(sr) ): |
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log.debug("Samplerate modified by external client") |
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if 'onSamplerateChange' in dir(self): |
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self.onSamplerateChange() |
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log.debug("Mixer configuration updated ") |
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else: |
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log.debug("Mixer configuration need to be updated but no means is provided") |
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self.streaming_status = ss |
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# Allow for devices whose sample rates can change dynamically (for |
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# example, in response to changes in external clock frequency) |
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self.refreshSampleRates(); |
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# vim: et |
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