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Diffstat (limited to 'arts/modules/effects/monostereoconversion_impl.cc')
| -rw-r--r-- | arts/modules/effects/monostereoconversion_impl.cc | 160 |
1 files changed, 160 insertions, 0 deletions
diff --git a/arts/modules/effects/monostereoconversion_impl.cc b/arts/modules/effects/monostereoconversion_impl.cc new file mode 100644 index 00000000..4d408e68 --- /dev/null +++ b/arts/modules/effects/monostereoconversion_impl.cc @@ -0,0 +1,160 @@ +/* + + Copyright ( C ) 2002 Arnold Krille <arnold@arnoldarts.de> + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public + License as published by the Free Software Foundation; either + version 2 of the License, or ( at your option ) any later version. + + This library 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public License + along with this library; see the file COPYING.LIB. If not, write to + the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. + + */ + +#include <artsflow.h> +#include <flowsystem.h> +#include <stdsynthmodule.h> +#include <debug.h> +#include <artsmoduleseffects.h> +#include <connect.h> + +#include <kglobal.h> +#include <klocale.h> + +namespace Arts { + +class MonoToStereo_impl : virtual public MonoToStereo_skel, + virtual public StdSynthModule +{ +protected: + float _pan, _pLeft, _pRight; +public: + MonoToStereo_impl() + { + pan( 0 ); + } + + float pan() { return _pan; } + void pan( float pan ) + { + if( pan < -1 ) pan = -1; + if( pan > 1 ) pan = 1; + _pan = pan; + _pLeft = _pRight = 1; + if( _pan < 0 ) + _pRight = 1 + _pan; + else + _pLeft = 1 - _pan; + } + + void calculateBlock( unsigned long samples ) + { + for( unsigned int i=0; i<samples; i++ ) + { + outleft[ i ] = inmono[ i ] * _pLeft; + outright[ i ] = inmono[ i ] * _pRight; + } + } +}; +REGISTER_IMPLEMENTATION( MonoToStereo_impl ); + +class StereoToMono_impl : virtual public StereoToMono_skel, + virtual public StdSynthModule +{ +protected: + float _pan, _pLeft, _pRight; +public: + StereoToMono_impl() + { + pan( 0 ); + } + + float pan() { return _pan; } + void pan( float pan ) + { + if( pan < -1 ) pan = -1; + if( pan > 1 ) pan = 1; + _pan = pan; + _pLeft = _pRight = 1; + if( _pan < 0 ) + _pRight = 1 + _pan; + else + _pLeft = 1 - _pan; + } + + void calculateBlock( unsigned long samples ) + { + for( unsigned int i=0; i<samples; i++ ) + outmono[ i ] = ( inleft[ i ] * _pLeft + inright[ i ] * _pRight ) / ( _pLeft + _pRight ); + } +}; +REGISTER_IMPLEMENTATION( StereoToMono_impl ); + +class StereoBalance_impl : virtual public StereoBalance_skel, + virtual public StdSynthModule +{ +protected: + float _balance, _left, _right; +public: + StereoBalance_impl() : _balance( 0 ), _left( 1 ), _right( 1 ) { } + + float balance() { return _balance; } + void balance( float n ) + { +//arts_debug( "StereoBalance::balance( float %f )", n ); + if( n>1 ) n=1; + if( n<-1 ) n=-1; + _balance = n; + _right = _left = 1; + if( _balance < 0 ) + _right = 1 + _balance; + else + _left = 1 - _balance; + } + + void calculateBlock( unsigned long samples ) + { +//arts_debug( "StereoBalance::calculateBlock( unsigned int %i )", samples ); + for( unsigned long i=0; i<samples; i++ ) + { + // outleft[ i ] = inleft[ i ]; + // outright[ i ] = inright[ i ]; + outleft[ i ] = inleft[ i ] * _left; + outright[ i ] = inright[ i ] * _right; + } + } +}; +REGISTER_IMPLEMENTATION( StereoBalance_impl ); + +class StereoBalanceGuiFactory_impl : virtual public StereoBalanceGuiFactory_skel +{ +public: + Widget createGui( Object object ) + { + KGlobal::locale()->insertCatalogue( "artsmodules" ); + + arts_return_val_if_fail( !object.isNull(), Arts::Widget::null() ); + StereoBalance ch= DynamicCast( object ); + arts_return_val_if_fail( !ch.isNull(), Arts::Widget::null() ); + + Poti bal; + bal.caption( i18n( "Balance" ).utf8().data() ); + bal.min( -1 ); bal.max( 1 ); + bal.value( ch.balance() ); + connect( bal, "value_changed", ch, "balance" ); + + return bal; + } +}; +REGISTER_IMPLEMENTATION( StereoBalanceGuiFactory_impl ); + +} + |