67 lines
1.6 KiB
C++
67 lines
1.6 KiB
C++
/* This file is part of Clementine.
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Clementine 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 3 of the License, or
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(at your option) any later version.
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Clementine 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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You should have received a copy of the GNU General Public License
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along with Clementine. If not, see <http://www.gnu.org/licenses/>.
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*/
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//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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