51 lines
986 B
C++
51 lines
986 B
C++
//Copyright: (C) 2003 Mark Kretschmann
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// (C) 2004,2005 Max Howell, <max.howell@methylblue.com>
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//License: See COPYING
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#include "enginebase.h"
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#include <cmath>
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const char* Engine::Base::kSettingsGroup = "Player";
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Engine::Base::Base()
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: m_xfadeLength( 0 )
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, m_xfadeNextTrack( false )
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, m_volume( 50 )
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, m_scope( SCOPESIZE )
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, m_isStream( false )
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{}
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Engine::Base::~Base()
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{
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}
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//////////////////////////////////////////////////////////////////////
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bool
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Engine::Base::load( const QUrl &url, bool stream )
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{
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m_url = url;
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m_isStream = stream;
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return true;
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}
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void Engine::Base::setVolume( uint value )
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{
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m_volume = value;
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setVolumeSW( makeVolumeLogarithmic( value ) );
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}
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uint
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Engine::Base::makeVolumeLogarithmic( uint volume ) // static
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{
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// We're using a logarithmic function to make the volume ramp more natural.
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return static_cast<uint>( 100 - 100.0 * std::log10( ( 100 - volume ) * 0.09 + 1.0 ) );
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}
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