500 lines
19 KiB
C++
Executable file
500 lines
19 KiB
C++
Executable file
/******************************************************************************\
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* Copyright (c) 2004-2013
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*
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* Author(s):
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* Volker Fischer
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*
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******************************************************************************
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*
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* This program is free software; you can redistribute it and/or modify it under
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* the terms of the GNU General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at your option) any later
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* version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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\******************************************************************************/
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#include "audiomixerboard.h"
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/******************************************************************************\
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* CChanneFader *
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\******************************************************************************/
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CChannelFader::CChannelFader ( QWidget* pNW,
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QHBoxLayout* pParentLayout )
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{
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// create new GUI control objects and store pointers to them (note that
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// QWidget takes the ownership of the pMainGrid so that this only has
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// to be created locally in this constructor)
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pFrame = new QFrame ( pNW );
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QVBoxLayout* pMainGrid = new QVBoxLayout ( pFrame );
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pFader = new QSlider ( Qt::Vertical, pFrame );
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pcbMute = new QCheckBox ( "Mute", pFrame );
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pcbSolo = new QCheckBox ( "Solo", pFrame );
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QGroupBox* pLabelInstBox = new QGroupBox ( pFrame );
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pLabel = new QLabel ( "", pFrame );
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pInstrument = new QLabel ( pFrame );
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QHBoxLayout* pLabelGrid = new QHBoxLayout ( pLabelInstBox );
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// setup slider
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pFader->setPageStep ( 1 );
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pFader->setTickPosition ( QSlider::TicksBothSides );
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pFader->setRange ( 0, AUD_MIX_FADER_MAX );
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pFader->setTickInterval ( AUD_MIX_FADER_MAX / 9 );
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// setup group box for label/instrument picture (use white background of
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// label and set a thick black border with nice round edges)
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pLabelInstBox->setStyleSheet (
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"QGroupBox { border: 2px solid black;"
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" border-radius: 4px;"
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" padding: 3px;"
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" background-color: white; }" );
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// setup fader tag label (black bold text which is centered)
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pLabel->setTextFormat ( Qt::PlainText );
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pLabel->setAlignment ( Qt::AlignHCenter );
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pLabel->setStyleSheet (
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"QLabel { color: black;"
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" font: bold; }" );
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// set margins of the layouts to zero to get maximum space for the controls
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pMainGrid->setContentsMargins ( 0, 0, 0, 0 );
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pLabelGrid->setContentsMargins ( 0, 0, 0, 0 );
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pLabelGrid->setSpacing ( 2 ); // only minimal space between picture and text
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// add user controls to the grids
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pLabelGrid->addWidget ( pInstrument );
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pLabelGrid->addWidget ( pLabel, 0 );
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pMainGrid->addWidget ( pFader, 0, Qt::AlignHCenter );
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pMainGrid->addWidget ( pcbMute, 0, Qt::AlignLeft );
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pMainGrid->addWidget ( pcbSolo, 0, Qt::AlignLeft );
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pMainGrid->addWidget ( pLabelInstBox );
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// add fader frame to audio mixer board layout
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pParentLayout->addWidget( pFrame );
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// reset current fader
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Reset();
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// add help text to controls
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pFader->setWhatsThis ( tr ( "<b>Mixer Fader:</b> Adjusts the audio level of "
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"this channel. All connected clients at the server will be assigned "
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"an audio fader at each client." ) );
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pFader->setAccessibleName ( tr ( "Mixer level setting of the connected client "
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"at the server" ) );
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pcbMute->setWhatsThis ( tr ( "<b>Mute:</b> With the Mute checkbox, the current "
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"audio channel can be muted." ) );
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pcbMute->setAccessibleName ( tr ( "Mute button" ) );
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pcbSolo->setWhatsThis ( tr ( "<b>Solo:</b> With the Solo checkbox, the current "
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"audio channel can be set to solo which means that all other channels "
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"except of the current channel are muted.<br>"
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"Only one channel at a time can be set to solo." ) );
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pcbSolo->setAccessibleName ( tr ( "Solo button" ) );
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QString strFaderText = tr ( "<b>Fader Tag:</b> The fader tag "
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"identifies the connected client. The tag name and the picture of your "
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"instrument can be set in the main window." );
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pInstrument->setWhatsThis ( strFaderText );
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pInstrument->setAccessibleName ( tr ( "Mixer channel instrument picture" ) );
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pLabel->setWhatsThis ( strFaderText );
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pLabel->setAccessibleName ( tr ( "Mixer channel label (fader tag)" ) );
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// Connections -------------------------------------------------------------
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QObject::connect ( pFader, SIGNAL ( valueChanged ( int ) ),
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this, SLOT ( OnGainValueChanged ( int ) ) );
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QObject::connect ( pcbMute, SIGNAL ( stateChanged ( int ) ),
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this, SLOT ( OnMuteStateChanged ( int ) ) );
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QObject::connect ( pcbSolo,
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SIGNAL ( stateChanged ( int ) ),
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SIGNAL ( soloStateChanged ( int ) ) );
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}
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void CChannelFader::SetGUIDesign ( const EGUIDesign eNewDesign )
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{
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switch ( eNewDesign )
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{
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case GD_ORIGINAL:
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// fader
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pFader->setStyleSheet (
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"QSlider { width: 45px;"
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" border-image: url(:/png/fader/res/faderbackground.png) repeat;"
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" border-top: 10px transparent;"
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" border-bottom: 10px transparent;"
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" border-left: 20px transparent;"
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" border-right: -25px transparent; }"
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"QSlider::groove { image: url();"
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" padding-left: -38px;"
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" padding-top: -10px;"
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" padding-bottom: -15px; }"
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"QSlider::handle { image: url(:/png/fader/res/faderhandle.png); }" );
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// mute button
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pcbMute->setText ( tr ( "MUTE" ) );
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// solo button
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pcbSolo->setText ( tr ( "SOLO" ) );
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break;
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default:
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// reset style sheet and set original paramters
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pFader->setStyleSheet ( "" );
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pcbMute->setText ( tr ( "Mute" ) );
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pcbSolo->setText ( tr ( "Solo" ) );
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break;
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}
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}
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void CChannelFader::Reset()
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{
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// init gain value -> maximum value as definition according to server
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pFader->setValue ( AUD_MIX_FADER_MAX );
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// reset mute/solo check boxes
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pcbMute->setChecked ( false );
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pcbSolo->setChecked ( false );
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// clear instrument picture and label text
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pInstrument->setVisible ( false );
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pLabel->setText ( "" );
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bOtherChannelIsSolo = false;
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}
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void CChannelFader::OnGainValueChanged ( int value )
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{
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// if mute flag is set or other channel is on solo, do not apply the new
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// fader value
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if ( ( pcbMute->checkState() == Qt::Unchecked ) && !bOtherChannelIsSolo )
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{
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// emit signal for new fader gain value
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emit gainValueChanged ( CalcFaderGain ( value ) );
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}
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}
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void CChannelFader::OnMuteStateChanged ( int value )
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{
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// call muting function
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SetMute ( static_cast<Qt::CheckState> ( value ) == Qt::Checked );
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}
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void CChannelFader::SetMute ( const bool bState )
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{
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if ( bState )
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{
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// mute channel -> send gain of 0
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emit gainValueChanged ( 0 );
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}
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else
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{
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// only unmute if no other channel is on solo
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if ( !bOtherChannelIsSolo )
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{
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// mute was unchecked, get current fader value and apply
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emit gainValueChanged ( CalcFaderGain ( pFader->value() ) );
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}
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}
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}
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void CChannelFader::ResetSoloState()
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{
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// reset solo state -> since solo state means that this channel is not
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// muted but all others, we simply have to uncheck the check box (make
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// sure the setChecked does not fire a signal)
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pcbSolo->blockSignals ( true );
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{
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pcbSolo->setChecked ( false );
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}
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pcbSolo->blockSignals ( false );
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}
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void CChannelFader::SetOtherSoloState ( const bool bState )
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{
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// store state (must be done before the SetMute() call!)
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bOtherChannelIsSolo = bState;
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// check if we are in solo on state, in that case we first have to disable
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// our solo state since only one channel can be set to solo
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if ( bState && pcbSolo->isChecked() )
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{
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// we do not want to fire a signal with the following set function
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// -> block signals temporarily
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pcbSolo->blockSignals ( true );
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{
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pcbSolo->setChecked ( false );
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}
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pcbSolo->blockSignals ( false );
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}
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// if other channel is solo, mute this channel, else enable channel gain
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// (only enable channel gain if local mute switch is not set to on)
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if ( !pcbMute->isChecked() )
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{
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SetMute ( bState );
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}
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}
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void CChannelFader::SetText ( const QString sText )
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{
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const int iBreakPos = MAX_LEN_FADER_TAG / 2;
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// break text at predefined position, if text is too short, break anyway to
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// make sure we have two lines for fader tag
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QString sModText = sText;
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if ( sModText.length() > iBreakPos )
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{
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sModText.insert ( iBreakPos, QString ( "\n" ) );
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}
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else
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{
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// insert line break at the beginning of the string -> make sure
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// if we only have one line that the text appears at the bottom line
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sModText.prepend ( QString ( "\n" ) );
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}
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pLabel->setText ( sModText );
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}
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void CChannelFader::SetInstrumentPicture ( const int iInstrument )
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{
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// get the resource reference string for this instrument
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const QString strCurResourceRef =
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CInstPictures::GetResourceReference ( iInstrument );
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// first check if instrument picture is used or not and if it is valid
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if ( CInstPictures::IsNotUsedInstrument ( iInstrument ) ||
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strCurResourceRef.isEmpty() )
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{
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// disable instrument picture
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pInstrument->setVisible ( false );
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}
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else
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{
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// set correct picture
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pInstrument->setPixmap ( QPixmap ( strCurResourceRef ) );
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// enable instrument picture
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pInstrument->setVisible ( true );
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}
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}
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double CChannelFader::CalcFaderGain ( const int value )
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{
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// convert actual slider range in gain values
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// and normalize so that maximum gain is 1
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return static_cast<double> ( value ) / AUD_MIX_FADER_MAX;
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}
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/******************************************************************************\
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* CAudioMixerBoard *
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\******************************************************************************/
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CAudioMixerBoard::CAudioMixerBoard ( QWidget* parent, Qt::WindowFlags ) :
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QGroupBox ( parent )
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{
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// set title text (default: no server given)
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SetServerName ( "" );
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// add hboxlayout
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pMainLayout = new QHBoxLayout ( this );
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// create all mixer controls and make them invisible
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vecpChanFader.Init ( MAX_NUM_CHANNELS );
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for ( int i = 0; i < MAX_NUM_CHANNELS; i++ )
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{
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vecpChanFader[i] = new CChannelFader ( this, pMainLayout );
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vecpChanFader[i]->Hide();
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}
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// insert horizontal spacer
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pMainLayout->addItem ( new QSpacerItem ( 0, 0, QSizePolicy::Expanding ) );
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// Connections -------------------------------------------------------------
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// CODE TAG: MAX_NUM_CHANNELS_TAG
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// make sure we have MAX_NUM_CHANNELS connections!!!
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QObject::connect ( vecpChanFader[0], SIGNAL ( gainValueChanged ( double ) ), this, SLOT ( OnGainValueChangedCh0 ( double ) ) );
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QObject::connect ( vecpChanFader[1], SIGNAL ( gainValueChanged ( double ) ), this, SLOT ( OnGainValueChangedCh1 ( double ) ) );
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QObject::connect ( vecpChanFader[2], SIGNAL ( gainValueChanged ( double ) ), this, SLOT ( OnGainValueChangedCh2 ( double ) ) );
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QObject::connect ( vecpChanFader[3], SIGNAL ( gainValueChanged ( double ) ), this, SLOT ( OnGainValueChangedCh3 ( double ) ) );
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QObject::connect ( vecpChanFader[4], SIGNAL ( gainValueChanged ( double ) ), this, SLOT ( OnGainValueChangedCh4 ( double ) ) );
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QObject::connect ( vecpChanFader[5], SIGNAL ( gainValueChanged ( double ) ), this, SLOT ( OnGainValueChangedCh5 ( double ) ) );
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QObject::connect ( vecpChanFader[6], SIGNAL ( gainValueChanged ( double ) ), this, SLOT ( OnGainValueChangedCh6 ( double ) ) );
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QObject::connect ( vecpChanFader[7], SIGNAL ( gainValueChanged ( double ) ), this, SLOT ( OnGainValueChangedCh7 ( double ) ) );
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QObject::connect ( vecpChanFader[8], SIGNAL ( gainValueChanged ( double ) ), this, SLOT ( OnGainValueChangedCh8 ( double ) ) );
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QObject::connect ( vecpChanFader[9], SIGNAL ( gainValueChanged ( double ) ), this, SLOT ( OnGainValueChangedCh9 ( double ) ) );
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QObject::connect ( vecpChanFader[10], SIGNAL ( gainValueChanged ( double ) ), this, SLOT ( OnGainValueChangedCh10 ( double ) ) );
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QObject::connect ( vecpChanFader[11], SIGNAL ( gainValueChanged ( double ) ), this, SLOT ( OnGainValueChangedCh11 ( double ) ) );
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QObject::connect ( vecpChanFader[0], SIGNAL ( soloStateChanged ( int ) ), this, SLOT ( OnChSoloStateChangedCh0 ( int ) ) );
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QObject::connect ( vecpChanFader[1], SIGNAL ( soloStateChanged ( int ) ), this, SLOT ( OnChSoloStateChangedCh1 ( int ) ) );
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QObject::connect ( vecpChanFader[2], SIGNAL ( soloStateChanged ( int ) ), this, SLOT ( OnChSoloStateChangedCh2 ( int ) ) );
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QObject::connect ( vecpChanFader[3], SIGNAL ( soloStateChanged ( int ) ), this, SLOT ( OnChSoloStateChangedCh3 ( int ) ) );
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QObject::connect ( vecpChanFader[4], SIGNAL ( soloStateChanged ( int ) ), this, SLOT ( OnChSoloStateChangedCh4 ( int ) ) );
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QObject::connect ( vecpChanFader[5], SIGNAL ( soloStateChanged ( int ) ), this, SLOT ( OnChSoloStateChangedCh5 ( int ) ) );
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QObject::connect ( vecpChanFader[6], SIGNAL ( soloStateChanged ( int ) ), this, SLOT ( OnChSoloStateChangedCh6 ( int ) ) );
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QObject::connect ( vecpChanFader[7], SIGNAL ( soloStateChanged ( int ) ), this, SLOT ( OnChSoloStateChangedCh7 ( int ) ) );
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QObject::connect ( vecpChanFader[8], SIGNAL ( soloStateChanged ( int ) ), this, SLOT ( OnChSoloStateChangedCh8 ( int ) ) );
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QObject::connect ( vecpChanFader[9], SIGNAL ( soloStateChanged ( int ) ), this, SLOT ( OnChSoloStateChangedCh9 ( int ) ) );
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QObject::connect ( vecpChanFader[10], SIGNAL ( soloStateChanged ( int ) ), this, SLOT ( OnChSoloStateChangedCh10 ( int ) ) );
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QObject::connect ( vecpChanFader[11], SIGNAL ( soloStateChanged ( int ) ), this, SLOT ( OnChSoloStateChangedCh11 ( int ) ) );
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}
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void CAudioMixerBoard::SetServerName ( const QString& strNewServerName )
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{
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// set title text of the group box
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if ( strNewServerName.isEmpty() )
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{
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setTitle ( "Server" );
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}
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else
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{
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setTitle ( strNewServerName );
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}
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}
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void CAudioMixerBoard::SetGUIDesign ( const EGUIDesign eNewDesign )
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{
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// apply GUI design to child GUI controls
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for ( int i = 0; i < MAX_NUM_CHANNELS; i++ )
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{
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vecpChanFader[i]->SetGUIDesign ( eNewDesign );
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}
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}
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void CAudioMixerBoard::HideAll()
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{
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// make all controls invisible
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for ( int i = 0; i < MAX_NUM_CHANNELS; i++ )
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{
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vecpChanFader[i]->Hide();
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}
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// emit status of connected clients
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emit NumClientsChanged ( 0 ); // -> no clients connected
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}
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void CAudioMixerBoard::ApplyNewConClientList ( CVector<CChannelInfo>& vecChanInfo )
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{
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// get number of connected clients
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const int iNumConnectedClients = vecChanInfo.Size();
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// search for channels with are already present and preserve their gain
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// setting, for all other channels reset gain
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for ( int i = 0; i < MAX_NUM_CHANNELS; i++ )
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{
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bool bFaderIsUsed = false;
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for ( int j = 0; j < iNumConnectedClients; j++ )
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{
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// check if current fader is used
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if ( vecChanInfo[j].iChanID == i )
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{
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// check if fader was already in use -> preserve gain value
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if ( !vecpChanFader[i]->IsVisible() )
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{
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vecpChanFader[i]->Reset();
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// show fader
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vecpChanFader[i]->Show();
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}
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else
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{
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// by definition disable all Solo switches if the number of
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// channels at the server has changed
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vecpChanFader[i]->SetOtherSoloState ( false );
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vecpChanFader[i]->ResetSoloState();
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}
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// update text
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vecpChanFader[i]->
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SetText ( GenFaderText ( vecChanInfo[j] ) );
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// update other channel infos (only available for new protocol
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// which is not compatible with old versions -> this way we make
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// sure that the protocol which transferrs only the name does
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// change the other client infos
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// #### COMPATIBILITY OLD VERSION, TO BE REMOVED #### -> the "if-condition" can be removed later on...
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if ( !vecChanInfo[j].bOnlyNameIsUsed )
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{
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// update instrument picture
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vecpChanFader[i]->
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SetInstrumentPicture ( vecChanInfo[j].iInstrument );
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}
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bFaderIsUsed = true;
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}
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}
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// if current fader is not used, hide it
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if ( !bFaderIsUsed )
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{
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vecpChanFader[i]->Hide();
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}
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}
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// emit status of connected clients
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emit NumClientsChanged ( iNumConnectedClients );
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}
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void CAudioMixerBoard::OnChSoloStateChanged ( const int iChannelIdx,
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const int iValue )
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{
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// if channel iChannelIdx has just activated the solo switch, mute all
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// other channels, else enable them again
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const bool bSetOtherSoloState =
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( static_cast<Qt::CheckState> ( iValue ) == Qt::Checked );
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// apply "other solo state" for all other channels
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for ( int i = 0; i < MAX_NUM_CHANNELS; i++ )
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{
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if ( i != iChannelIdx )
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{
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// check if fader is in use
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if ( vecpChanFader[i]->IsVisible() )
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{
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vecpChanFader[i]->SetOtherSoloState ( bSetOtherSoloState );
|
|
}
|
|
}
|
|
}
|
|
|
|
// set "other solo state" always to false for the current fader at which the
|
|
// status was changed because if solo is enabled, it has to be "false" and
|
|
// in case solo is just disabled (check was removed by the user), also no
|
|
// other channel can be solo at this time
|
|
vecpChanFader[iChannelIdx]->SetOtherSoloState ( false );
|
|
}
|
|
|
|
QString CAudioMixerBoard::GenFaderText ( CChannelInfo& ChanInfo )
|
|
{
|
|
// if text is empty, show IP address instead
|
|
if ( ChanInfo.strName.isEmpty() )
|
|
{
|
|
// convert IP address to text and show it (use dummy port number
|
|
// since it is not used here)
|
|
const CHostAddress TempAddr =
|
|
CHostAddress ( QHostAddress ( ChanInfo.iIpAddr ), 0 );
|
|
|
|
return TempAddr.toString ( CHostAddress::SM_IP_NO_LAST_BYTE );
|
|
}
|
|
else
|
|
{
|
|
// show name of channel
|
|
return ChanInfo.strName;
|
|
}
|
|
}
|