jamulus/src/audiomixerboard.cpp
Volker Fischer 8bfdc7347a 2017 -> 2018
2018-03-09 21:13:02 +00:00

769 lines
30 KiB
C++
Executable file

/******************************************************************************\
* Copyright (c) 2004-2018
*
* Author(s):
* Volker Fischer
*
******************************************************************************
*
* This program is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License as published by the Free Software
* Foundation; either version 2 of the License, or (at your option) any later
* version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
\******************************************************************************/
#include "audiomixerboard.h"
/******************************************************************************\
* CChanneFader *
\******************************************************************************/
CChannelFader::CChannelFader ( QWidget* pNW,
QHBoxLayout* pParentLayout )
{
// create new GUI control objects and store pointers to them (note that
// QWidget takes the ownership of the pMainGrid so that this only has
// to be created locally in this constructor)
pFrame = new QFrame ( pNW );
QVBoxLayout* pMainGrid = new QVBoxLayout ( pFrame );
pFader = new QSlider ( Qt::Vertical, pFrame );
pcbMute = new QCheckBox ( "Mute", pFrame );
pcbSolo = new QCheckBox ( "Solo", pFrame );
pLabelInstBox = new QGroupBox ( pFrame );
plblLabel = new QLabel ( "", pFrame );
plblInstrument = new QLabel ( pFrame );
plblCountryFlag = new QLabel ( pFrame );
QHBoxLayout* pLabelGrid = new QHBoxLayout ( pLabelInstBox );
QVBoxLayout* pLabelPictGrid = new QVBoxLayout();
// setup slider
pFader->setPageStep ( 1 );
pFader->setTickPosition ( QSlider::TicksBothSides );
pFader->setRange ( 0, AUD_MIX_FADER_MAX );
pFader->setTickInterval ( AUD_MIX_FADER_MAX / 9 );
// setup fader tag label (black bold text which is centered)
plblLabel->setTextFormat ( Qt::PlainText );
plblLabel->setAlignment ( Qt::AlignHCenter | Qt::AlignVCenter );
plblLabel->setMinimumHeight ( 40 ); // maximum hight of the instrument+flag pictures
plblLabel->setStyleSheet (
"QLabel { color: black;"
" font: bold; }" );
// set margins of the layouts to zero to get maximum space for the controls
pMainGrid->setContentsMargins ( 0, 0, 0, 0 );
pLabelGrid->setContentsMargins ( 0, 0, 0, 0 );
pLabelGrid->setSpacing ( 2 ); // only minimal space between picture and text
// add user controls to the grids
pLabelPictGrid->addWidget ( plblCountryFlag, 0, Qt::AlignHCenter );
pLabelPictGrid->addWidget ( plblInstrument, 0, Qt::AlignHCenter );
pLabelGrid->addLayout ( pLabelPictGrid );
pLabelGrid->addWidget ( plblLabel, 0, Qt::AlignVCenter );
pMainGrid->addWidget ( pFader, 0, Qt::AlignHCenter );
pMainGrid->addWidget ( pcbMute, 0, Qt::AlignLeft );
pMainGrid->addWidget ( pcbSolo, 0, Qt::AlignLeft );
pMainGrid->addWidget ( pLabelInstBox );
// add fader frame to audio mixer board layout
pParentLayout->addWidget( pFrame );
// reset current fader
Reset();
// add help text to controls
pFader->setWhatsThis ( tr ( "<b>Mixer Fader:</b> Adjusts the audio level of "
"this channel. All connected clients at the server will be assigned "
"an audio fader at each client." ) );
pFader->setAccessibleName ( tr ( "Mixer level setting of the connected client "
"at the server" ) );
pcbMute->setWhatsThis ( tr ( "<b>Mute:</b> With the Mute checkbox, the current "
"audio channel can be muted." ) );
pcbMute->setAccessibleName ( tr ( "Mute button" ) );
pcbSolo->setWhatsThis ( tr ( "<b>Solo:</b> With the Solo checkbox, the current "
"audio channel can be set to solo which means that all other channels "
"except of the current channel are muted. It is possible to set more than "
"one channel to solo." ) );
pcbSolo->setAccessibleName ( tr ( "Solo button" ) );
QString strFaderText = tr ( "<b>Fader Tag:</b> The fader tag "
"identifies the connected client. The tag name, the picture of your "
"instrument and a flag of your country can be set in the main window." );
plblInstrument->setWhatsThis ( strFaderText );
plblInstrument->setAccessibleName ( tr ( "Mixer channel instrument picture" ) );
plblLabel->setWhatsThis ( strFaderText );
plblLabel->setAccessibleName ( tr ( "Mixer channel label (fader tag)" ) );
plblCountryFlag->setWhatsThis ( strFaderText );
plblCountryFlag->setAccessibleName ( tr ( "Mixer channel country flag" ) );
// Connections -------------------------------------------------------------
QObject::connect ( pFader, SIGNAL ( valueChanged ( int ) ),
this, SLOT ( OnLevelValueChanged ( int ) ) );
QObject::connect ( pcbMute, SIGNAL ( stateChanged ( int ) ),
this, SLOT ( OnMuteStateChanged ( int ) ) );
QObject::connect ( pcbSolo,
SIGNAL ( stateChanged ( int ) ),
SIGNAL ( soloStateChanged ( int ) ) );
}
void CChannelFader::SetGUIDesign ( const EGUIDesign eNewDesign )
{
switch ( eNewDesign )
{
case GD_ORIGINAL:
// fader
pFader->setStyleSheet (
"QSlider { width: 45px;"
" border-image: url(:/png/fader/res/faderbackground.png) repeat;"
" border-top: 10px transparent;"
" border-bottom: 10px transparent;"
" border-left: 20px transparent;"
" border-right: -25px transparent; }"
"QSlider::groove { image: url();"
" padding-left: -38px;"
" padding-top: -10px;"
" padding-bottom: -15px; }"
"QSlider::handle { image: url(:/png/fader/res/faderhandle.png); }" );
// mute button
pcbMute->setText ( tr ( "MUTE" ) );
// solo button
pcbSolo->setText ( tr ( "SOLO" ) );
break;
default:
// reset style sheet and set original paramters
pFader->setStyleSheet ( "" );
pcbMute->setText ( tr ( "Mute" ) );
pcbSolo->setText ( tr ( "Solo" ) );
break;
}
}
void CChannelFader::SetupFaderTag ( const ESkillLevel eSkillLevel )
{
// setup group box for label/instrument picture: set a thick black border
// with nice round edges
QString strStile =
"QGroupBox { border: 2px solid black;"
" border-radius: 4px;"
" padding: 3px;";
// the background color depends on the skill level
switch ( eSkillLevel )
{
case SL_BEGINNER:
strStile += QString ( "background-color: rgb(%1, %2, %3); }" ).
arg ( RGBCOL_R_SL_BEGINNER ).
arg ( RGBCOL_G_SL_BEGINNER ).
arg ( RGBCOL_B_SL_BEGINNER );
break;
case SL_INTERMEDIATE:
strStile += QString ( "background-color: rgb(%1, %2, %3); }" ).
arg ( RGBCOL_R_SL_INTERMEDIATE ).
arg ( RGBCOL_G_SL_INTERMEDIATE ).
arg ( RGBCOL_B_SL_INTERMEDIATE );
break;
case SL_PROFESSIONAL:
strStile += QString ( "background-color: rgb(%1, %2, %3); }" ).
arg ( RGBCOL_R_SL_SL_PROFESSIONAL ).
arg ( RGBCOL_G_SL_SL_PROFESSIONAL ).
arg ( RGBCOL_B_SL_SL_PROFESSIONAL );
break;
default:
strStile += QString ( "background-color: rgb(%1, %2, %3); }" ).
arg ( RGBCOL_R_SL_NOT_SET ).
arg ( RGBCOL_G_SL_NOT_SET ).
arg ( RGBCOL_B_SL_NOT_SET );
break;
}
pLabelInstBox->setStyleSheet ( strStile );
}
void CChannelFader::Reset()
{
// init gain value -> maximum value as definition according to server
pFader->setValue ( AUD_MIX_FADER_MAX );
// reset mute/solo check boxes
pcbMute->setChecked ( false );
pcbSolo->setChecked ( false );
// clear instrument picture, country flag, tool tips and label text
plblLabel->setText ( "" );
plblLabel->setToolTip ( "" );
plblInstrument->setVisible ( false );
plblInstrument->setToolTip ( "" );
plblCountryFlag->setVisible ( false );
plblCountryFlag->setToolTip ( "" );
strReceivedName = "";
SetupFaderTag ( SL_NOT_SET );
// set a defined tool tip time out (only available in Qt5)
#if QT_VERSION >= QT_VERSION_CHECK(5, 0, 0)
const int iToolTipDurMs = 30000;
plblLabel->setToolTipDuration ( iToolTipDurMs );
plblInstrument->setToolTipDuration ( iToolTipDurMs );
plblCountryFlag->setToolTipDuration ( iToolTipDurMs );
#endif
bOtherChannelIsSolo = false;
}
void CChannelFader::SetFaderLevel ( const int iLevel )
{
// first make a range check
if ( ( iLevel >= 0 ) && ( iLevel <= AUD_MIX_FADER_MAX ) )
{
// we set the new fader level in the GUI (slider control) and also tell the
// server about the change
pFader->setValue ( iLevel );
SendFaderLevelToServer ( iLevel );
}
}
void CChannelFader::SetFaderIsSolo ( const bool bIsSolo )
{
// changing the state automatically emits the signal, too
pcbSolo->setChecked ( bIsSolo );
}
void CChannelFader::SendFaderLevelToServer ( const int iLevel )
{
// if mute flag is set or other channel is on solo, do not apply the new
// fader value (exception: we are on solo, in that case we ignore the
// "other channel is on solo" flag)
if ( ( pcbMute->checkState() == Qt::Unchecked ) &&
( !bOtherChannelIsSolo || IsSolo() ) )
{
// emit signal for new fader gain value
emit gainValueChanged ( CalcFaderGain ( iLevel ) );
}
}
void CChannelFader::OnMuteStateChanged ( int value )
{
// call muting function
SetMute ( static_cast<Qt::CheckState> ( value ) == Qt::Checked );
}
void CChannelFader::SetMute ( const bool bState )
{
if ( bState )
{
// mute channel -> send gain of 0
emit gainValueChanged ( 0 );
}
else
{
// only unmute if we are not solot but an other channel is on solo
if ( !bOtherChannelIsSolo || IsSolo() )
{
// mute was unchecked, get current fader value and apply
emit gainValueChanged ( CalcFaderGain ( GetFaderLevel() ) );
}
}
}
void CChannelFader::UpdateSoloState ( const bool bNewOtherSoloState )
{
// store state (must be done before the SetMute() call!)
bOtherChannelIsSolo = bNewOtherSoloState;
// mute overwrites solo -> if mute is active, do not change anything
if ( !pcbMute->isChecked() )
{
// mute channel if we are not solo but another channel is solo
SetMute ( bOtherChannelIsSolo && !IsSolo() );
}
}
void CChannelFader::SetText ( const CChannelInfo& ChanInfo )
{
// store original received name
strReceivedName = ChanInfo.strName;
// break text at predefined position
const int iBreakPos = MAX_LEN_FADER_TAG / 2;
QString strModText = ChanInfo.GenNameForDisplay();
if ( strModText.length() > iBreakPos )
{
strModText.insert ( iBreakPos, QString ( "\n" ) );
}
plblLabel->setText ( strModText );
}
void CChannelFader::SetChannelInfos ( const CChannelInfo& cChanInfo )
{
// init properties for the tool tip
int iTTInstrument = CInstPictures::GetNotUsedInstrument();
QLocale::Country eTTCountry = QLocale::AnyCountry;
// Instrument picture ------------------------------------------------------
// get the resource reference string for this instrument
const QString strCurResourceRef =
CInstPictures::GetResourceReference ( cChanInfo.iInstrument );
// first check if instrument picture is used or not and if it is valid
if ( CInstPictures::IsNotUsedInstrument ( cChanInfo.iInstrument ) ||
strCurResourceRef.isEmpty() )
{
// disable instrument picture
plblInstrument->setVisible ( false );
}
else
{
// set correct picture
plblInstrument->setPixmap ( QPixmap ( strCurResourceRef ) );
iTTInstrument = cChanInfo.iInstrument;
// enable instrument picture
plblInstrument->setVisible ( true );
}
// Country flag icon -------------------------------------------------------
if ( cChanInfo.eCountry != QLocale::AnyCountry )
{
// try to load the country flag icon
QPixmap CountryFlagPixmap (
CCountyFlagIcons::GetResourceReference ( cChanInfo.eCountry ) );
// first check if resource reference was valid
if ( CountryFlagPixmap.isNull() )
{
// disable country flag
plblCountryFlag->setVisible ( false );
}
else
{
// set correct picture
plblCountryFlag->setPixmap ( CountryFlagPixmap );
eTTCountry = cChanInfo.eCountry;
// enable country flag
plblCountryFlag->setVisible ( true );
}
}
else
{
// disable country flag
plblCountryFlag->setVisible ( false );
}
// Skill level background color --------------------------------------------
SetupFaderTag ( cChanInfo.eSkillLevel );
// Tool tip ----------------------------------------------------------------
// complete musician profile in the tool tip
QString strToolTip = "";
// alias/name
if ( !strReceivedName.isEmpty() )
{
strToolTip += "<h4>Alias/Name</h4>" + strReceivedName;
}
// instrument
if ( !CInstPictures::IsNotUsedInstrument ( iTTInstrument ) )
{
strToolTip += "<h4>Instrument</h4>" +
CInstPictures::GetName ( iTTInstrument );
}
// location
if ( ( eTTCountry != QLocale::AnyCountry ) ||
( !cChanInfo.strCity.isEmpty() ) )
{
strToolTip += "<h4>Location</h4>";
if ( !cChanInfo.strCity.isEmpty() )
{
strToolTip += cChanInfo.strCity;
if ( eTTCountry != QLocale::AnyCountry )
{
strToolTip += ", ";
}
}
if ( eTTCountry != QLocale::AnyCountry )
{
strToolTip += QLocale::countryToString ( eTTCountry );
}
}
// skill level
switch ( cChanInfo.eSkillLevel )
{
case SL_BEGINNER:
strToolTip += "<h4>Skill Level</h4>Beginner";
break;
case SL_INTERMEDIATE:
strToolTip += "<h4>Skill Level</h4>Intermediate";
break;
case SL_PROFESSIONAL:
strToolTip += "<h4>Skill Level</h4>Expert";
break;
case SL_NOT_SET:
// skill level not set, do not add this entry
break;
}
// if no information is given, leave the tool tip empty, otherwise add header
if ( !strToolTip.isEmpty() )
{
strToolTip.prepend ( "<h3>Musician Profile</h3>" );
}
plblCountryFlag->setToolTip ( strToolTip );
plblInstrument->setToolTip ( strToolTip );
plblLabel->setToolTip ( strToolTip );
}
double CChannelFader::CalcFaderGain ( const int value )
{
// convert actual slider range in gain values
// and normalize so that maximum gain is 1
return static_cast<double> ( value ) / AUD_MIX_FADER_MAX;
}
/******************************************************************************\
* CAudioMixerBoard *
\******************************************************************************/
CAudioMixerBoard::CAudioMixerBoard ( QWidget* parent, Qt::WindowFlags ) :
QGroupBox ( parent ),
vecStoredFaderTags ( MAX_NUM_STORED_FADER_SETTINGS, "" ),
vecStoredFaderLevels ( MAX_NUM_STORED_FADER_SETTINGS, AUD_MIX_FADER_MAX ),
vecStoredFaderIsSolo ( MAX_NUM_STORED_FADER_SETTINGS, false ),
iNewClientFaderLevel ( 100 ),
bNoFaderVisible ( true )
{
// set title text (default: no server given)
SetServerName ( "" );
// add hboxlayout
pMainLayout = new QHBoxLayout ( this );
// create all mixer controls and make them invisible
vecpChanFader.Init ( MAX_NUM_CHANNELS );
for ( int i = 0; i < MAX_NUM_CHANNELS; i++ )
{
vecpChanFader[i] = new CChannelFader ( this, pMainLayout );
vecpChanFader[i]->Hide();
}
// insert horizontal spacer
pMainLayout->addItem ( new QSpacerItem ( 0, 0, QSizePolicy::Expanding ) );
// Connections -------------------------------------------------------------
// CODE TAG: MAX_NUM_CHANNELS_TAG
// make sure we have MAX_NUM_CHANNELS connections!!!
QObject::connect ( vecpChanFader[0], SIGNAL ( gainValueChanged ( double ) ), this, SLOT ( OnGainValueChangedCh0 ( double ) ) );
QObject::connect ( vecpChanFader[1], SIGNAL ( gainValueChanged ( double ) ), this, SLOT ( OnGainValueChangedCh1 ( double ) ) );
QObject::connect ( vecpChanFader[2], SIGNAL ( gainValueChanged ( double ) ), this, SLOT ( OnGainValueChangedCh2 ( double ) ) );
QObject::connect ( vecpChanFader[3], SIGNAL ( gainValueChanged ( double ) ), this, SLOT ( OnGainValueChangedCh3 ( double ) ) );
QObject::connect ( vecpChanFader[4], SIGNAL ( gainValueChanged ( double ) ), this, SLOT ( OnGainValueChangedCh4 ( double ) ) );
QObject::connect ( vecpChanFader[5], SIGNAL ( gainValueChanged ( double ) ), this, SLOT ( OnGainValueChangedCh5 ( double ) ) );
QObject::connect ( vecpChanFader[6], SIGNAL ( gainValueChanged ( double ) ), this, SLOT ( OnGainValueChangedCh6 ( double ) ) );
QObject::connect ( vecpChanFader[7], SIGNAL ( gainValueChanged ( double ) ), this, SLOT ( OnGainValueChangedCh7 ( double ) ) );
QObject::connect ( vecpChanFader[8], SIGNAL ( gainValueChanged ( double ) ), this, SLOT ( OnGainValueChangedCh8 ( double ) ) );
QObject::connect ( vecpChanFader[9], SIGNAL ( gainValueChanged ( double ) ), this, SLOT ( OnGainValueChangedCh9 ( double ) ) );
QObject::connect ( vecpChanFader[10], SIGNAL ( gainValueChanged ( double ) ), this, SLOT ( OnGainValueChangedCh10 ( double ) ) );
QObject::connect ( vecpChanFader[11], SIGNAL ( gainValueChanged ( double ) ), this, SLOT ( OnGainValueChangedCh11 ( double ) ) );
QObject::connect ( vecpChanFader[12], SIGNAL ( gainValueChanged ( double ) ), this, SLOT ( OnGainValueChangedCh12 ( double ) ) );
QObject::connect ( vecpChanFader[13], SIGNAL ( gainValueChanged ( double ) ), this, SLOT ( OnGainValueChangedCh13 ( double ) ) );
QObject::connect ( vecpChanFader[14], SIGNAL ( gainValueChanged ( double ) ), this, SLOT ( OnGainValueChangedCh14 ( double ) ) );
QObject::connect ( vecpChanFader[15], SIGNAL ( gainValueChanged ( double ) ), this, SLOT ( OnGainValueChangedCh15 ( double ) ) );
QObject::connect ( vecpChanFader[16], SIGNAL ( gainValueChanged ( double ) ), this, SLOT ( OnGainValueChangedCh16 ( double ) ) );
QObject::connect ( vecpChanFader[17], SIGNAL ( gainValueChanged ( double ) ), this, SLOT ( OnGainValueChangedCh17 ( double ) ) );
QObject::connect ( vecpChanFader[18], SIGNAL ( gainValueChanged ( double ) ), this, SLOT ( OnGainValueChangedCh18 ( double ) ) );
QObject::connect ( vecpChanFader[19], SIGNAL ( gainValueChanged ( double ) ), this, SLOT ( OnGainValueChangedCh19 ( double ) ) );
QObject::connect ( vecpChanFader[0], SIGNAL ( soloStateChanged ( int ) ), this, SLOT ( OnChSoloStateChanged() ) );
QObject::connect ( vecpChanFader[1], SIGNAL ( soloStateChanged ( int ) ), this, SLOT ( OnChSoloStateChanged() ) );
QObject::connect ( vecpChanFader[2], SIGNAL ( soloStateChanged ( int ) ), this, SLOT ( OnChSoloStateChanged() ) );
QObject::connect ( vecpChanFader[3], SIGNAL ( soloStateChanged ( int ) ), this, SLOT ( OnChSoloStateChanged() ) );
QObject::connect ( vecpChanFader[4], SIGNAL ( soloStateChanged ( int ) ), this, SLOT ( OnChSoloStateChanged() ) );
QObject::connect ( vecpChanFader[5], SIGNAL ( soloStateChanged ( int ) ), this, SLOT ( OnChSoloStateChanged() ) );
QObject::connect ( vecpChanFader[6], SIGNAL ( soloStateChanged ( int ) ), this, SLOT ( OnChSoloStateChanged() ) );
QObject::connect ( vecpChanFader[7], SIGNAL ( soloStateChanged ( int ) ), this, SLOT ( OnChSoloStateChanged() ) );
QObject::connect ( vecpChanFader[8], SIGNAL ( soloStateChanged ( int ) ), this, SLOT ( OnChSoloStateChanged() ) );
QObject::connect ( vecpChanFader[9], SIGNAL ( soloStateChanged ( int ) ), this, SLOT ( OnChSoloStateChanged() ) );
QObject::connect ( vecpChanFader[10], SIGNAL ( soloStateChanged ( int ) ), this, SLOT ( OnChSoloStateChanged() ) );
QObject::connect ( vecpChanFader[11], SIGNAL ( soloStateChanged ( int ) ), this, SLOT ( OnChSoloStateChanged() ) );
QObject::connect ( vecpChanFader[12], SIGNAL ( soloStateChanged ( int ) ), this, SLOT ( OnChSoloStateChanged() ) );
QObject::connect ( vecpChanFader[13], SIGNAL ( soloStateChanged ( int ) ), this, SLOT ( OnChSoloStateChanged() ) );
QObject::connect ( vecpChanFader[14], SIGNAL ( soloStateChanged ( int ) ), this, SLOT ( OnChSoloStateChanged() ) );
QObject::connect ( vecpChanFader[15], SIGNAL ( soloStateChanged ( int ) ), this, SLOT ( OnChSoloStateChanged() ) );
QObject::connect ( vecpChanFader[16], SIGNAL ( soloStateChanged ( int ) ), this, SLOT ( OnChSoloStateChanged() ) );
QObject::connect ( vecpChanFader[17], SIGNAL ( soloStateChanged ( int ) ), this, SLOT ( OnChSoloStateChanged() ) );
QObject::connect ( vecpChanFader[18], SIGNAL ( soloStateChanged ( int ) ), this, SLOT ( OnChSoloStateChanged() ) );
QObject::connect ( vecpChanFader[19], SIGNAL ( soloStateChanged ( int ) ), this, SLOT ( OnChSoloStateChanged() ) );
}
void CAudioMixerBoard::SetServerName ( const QString& strNewServerName )
{
// set title text of the group box
if ( strNewServerName.isEmpty() )
{
setTitle ( "Server" );
}
else
{
setTitle ( strNewServerName );
}
}
void CAudioMixerBoard::SetGUIDesign ( const EGUIDesign eNewDesign )
{
// apply GUI design to child GUI controls
for ( int i = 0; i < MAX_NUM_CHANNELS; i++ )
{
vecpChanFader[i]->SetGUIDesign ( eNewDesign );
}
}
void CAudioMixerBoard::HideAll()
{
// make all controls invisible
for ( int i = 0; i < MAX_NUM_CHANNELS; i++ )
{
// before hiding the fader, store its level (if some conditions are fullfilled)
StoreFaderSettings ( vecpChanFader[i] );
vecpChanFader[i]->Hide();
}
// set flag
bNoFaderVisible = true;
// emit status of connected clients
emit NumClientsChanged ( 0 ); // -> no clients connected
}
void CAudioMixerBoard::ApplyNewConClientList ( CVector<CChannelInfo>& vecChanInfo )
{
// get number of connected clients
const int iNumConnectedClients = vecChanInfo.Size();
// search for channels with are already present and preserve their gain
// setting, for all other channels reset gain
for ( int i = 0; i < MAX_NUM_CHANNELS; i++ )
{
bool bFaderIsUsed = false;
for ( int j = 0; j < iNumConnectedClients; j++ )
{
// check if current fader is used
if ( vecChanInfo[j].iChanID == i )
{
// check if fader was already in use -> preserve gain value
if ( !vecpChanFader[i]->IsVisible() )
{
// the fader was not in use, reset everything for new client
vecpChanFader[i]->Reset();
// show fader
vecpChanFader[i]->Show();
// Set the default initial fader level. Check first that
// this is not the initialization (i.e. previously there
// were no faders visible) to avoid that our own level is
// adjusted. The fader level of 100 % is the default in the
// server, in that case we do not have to do anything here.
if ( !bNoFaderVisible && ( iNewClientFaderLevel != 100 ) )
{
// the value is in percent -> convert range
vecpChanFader[i]->SetFaderLevel ( static_cast<int> (
iNewClientFaderLevel / 100.0 * AUD_MIX_FADER_MAX ) );
}
}
// restore gain (if new name is different from the current one)
if ( vecpChanFader[i]->GetReceivedName().compare ( vecChanInfo[j].strName ) )
{
// the text has actually changed, search in the list of
// stored settings if we have a matching entry
int iStoredFaderLevel;
bool bStoredFaderIsSolo;
if ( GetStoredFaderSettings ( vecChanInfo[j],
iStoredFaderLevel,
bStoredFaderIsSolo ) )
{
vecpChanFader[i]->SetFaderLevel ( iStoredFaderLevel );
vecpChanFader[i]->SetFaderIsSolo ( bStoredFaderIsSolo );
}
}
// set the text in the fader
vecpChanFader[i]->SetText ( vecChanInfo[j] );
// update other channel infos (only available for new protocol
// which is not compatible with old versions -> this way we make
// sure that the protocol which transfers only the name does
// change the other client infos)
// #### COMPATIBILITY OLD VERSION, TO BE REMOVED #### -> the "if-condition" can be removed later on...
if ( !vecChanInfo[j].bOnlyNameIsUsed )
{
vecpChanFader[i]->SetChannelInfos ( vecChanInfo[j] );
}
bFaderIsUsed = true;
}
}
// if current fader is not used, hide it
if ( !bFaderIsUsed )
{
// before hiding the fader, store its level (if some conditions are fullfilled)
StoreFaderSettings ( vecpChanFader[i] );
vecpChanFader[i]->Hide();
}
}
// update the solo states since if any channel was on solo and a new client
// has just connected, the new channel must be muted
UpdateSoloStates();
// update flag for "all faders are invisible"
bNoFaderVisible = ( iNumConnectedClients == 0 );
// emit status of connected clients
emit NumClientsChanged ( iNumConnectedClients );
}
void CAudioMixerBoard::UpdateSoloStates()
{
// first check if any channel has a solo state active
bool bAnyChannelIsSolo = false;
for ( int i = 0; i < MAX_NUM_CHANNELS; i++ )
{
// check if fader is in use and has solo state active
if ( vecpChanFader[i]->IsVisible() && vecpChanFader[i]->IsSolo() )
{
bAnyChannelIsSolo = true;
continue;
}
}
// now update the solo state of all active faders
for ( int i = 0; i < MAX_NUM_CHANNELS; i++ )
{
if ( vecpChanFader[i]->IsVisible() )
{
vecpChanFader[i]->UpdateSoloState ( bAnyChannelIsSolo );
}
}
}
void CAudioMixerBoard::OnGainValueChanged ( const int iChannelIdx,
const double dValue )
{
emit ChangeChanGain ( iChannelIdx, dValue );
}
void CAudioMixerBoard::StoreFaderSettings ( CChannelFader* pChanFader )
{
// if the fader was visible and the name is not empty, we store the old gain
if ( pChanFader->IsVisible() &&
!pChanFader->GetReceivedName().isEmpty() )
{
CVector<int> viOldStoredFaderLevels ( vecStoredFaderLevels );
CVector<int> vbOldStoredFaderIsSolo ( vecStoredFaderIsSolo );
// init temporary list count (may be overwritten later on)
int iTempListCnt = 0;
// put new value on the top of the list
const int iOldIdx =
vecStoredFaderTags.StringFiFoWithCompare ( pChanFader->GetReceivedName(),
true );
// current fader level and solo state is at the top of the list
vecStoredFaderLevels[0] = pChanFader->GetFaderLevel();
vecStoredFaderIsSolo[0] = pChanFader->IsSolo();
iTempListCnt = 1;
for ( int iIdx = 0; iIdx < MAX_NUM_STORED_FADER_SETTINGS; iIdx++ )
{
// first check if we still have space in our data storage
if ( iTempListCnt < MAX_NUM_STORED_FADER_SETTINGS )
{
// check for the old index of the current entry (this has to be
// skipped), note that per definition: the old index is an illegal
// index in case the entry was not present in the vector before
if ( iIdx != iOldIdx )
{
vecStoredFaderLevels[iTempListCnt] = viOldStoredFaderLevels[iIdx];
vecStoredFaderIsSolo[iTempListCnt] = vbOldStoredFaderIsSolo[iIdx];
iTempListCnt++;
}
}
}
}
}
bool CAudioMixerBoard::GetStoredFaderSettings ( const CChannelInfo& ChanInfo,
int& iStoredFaderLevel,
bool& bStoredFaderIsSolo )
{
// only do the check if the name string is not empty
if ( !ChanInfo.strName.isEmpty() )
{
for ( int iIdx = 0; iIdx < MAX_NUM_STORED_FADER_SETTINGS; iIdx++ )
{
// check if fader text is already known in the list
if ( !vecStoredFaderTags[iIdx].compare ( ChanInfo.strName ) )
{
// copy stored settings values
iStoredFaderLevel = vecStoredFaderLevels[iIdx];
bStoredFaderIsSolo = vecStoredFaderIsSolo[iIdx] != false;
// values found and copied, return OK
return true;
}
}
}
// return "not OK" since we did not find matching fader settings
return false;
}