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83 lines
2.5 KiB
83 lines
2.5 KiB
/*****************************************************************************
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* volume.cpp
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*****************************************************************************
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* Copyright (C) 2003 the VideoLAN team
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*
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* Authors: Cyril Deguet <asmax@via.ecp.fr>
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* Olivier Teulière <ipkiss@via.ecp.fr>
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* Erwan Tulou <erwan10 aT videolan Dot org>
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*
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* This program 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 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
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*****************************************************************************/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <vlc_common.h>
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#include <vlc_configuration.h>
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#include <vlc_player.h>
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#include <vlc_playlist.h>
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#include <vlc_aout.h>
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#include "volume.hpp"
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#include <math.h>
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Volume::Volume( intf_thread_t *pIntf ): VarPercent( pIntf )
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{
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// compute preferred step in [0.,1.] range
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m_step = config_GetFloat( "volume-step" ) / (float)AOUT_VOLUME_MAX;
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// set current volume from the playlist
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setVolume( 0.0f, false );
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}
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void Volume::set( float percentage, bool updateVLC )
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{
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VarPercent::set( percentage );
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if( updateVLC )
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{
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vlc_player_t *player = vlc_playlist_GetPlayer( getPL());
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vlc_player_aout_SetVolume( player, getVolume() );
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}
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}
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void Volume::setVolume( float volume, bool updateVLC )
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{
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// translate from [0.,AOUT_VOLUME_MAX/AOUT_VOLUME_DEFAULT] into [0.,1.]
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float percentage = (volume > 0.f ) ?
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volume * AOUT_VOLUME_DEFAULT / AOUT_VOLUME_MAX :
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0.f;
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set( percentage, updateVLC );
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}
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float Volume::getVolume() const
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{
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// translate from [0.,1.] into [0.,AOUT_VOLUME_MAX/AOUT_VOLUME_DEFAULT]
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return get() * AOUT_VOLUME_MAX / AOUT_VOLUME_DEFAULT;
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}
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std::string Volume::getAsStringPercent() const
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{
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int value = lround( getVolume() * 100. );
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// 0 <= value <= 200, so we need 4 chars
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char str[4];
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snprintf( str, 4, "%i", value );
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return std::string(str);
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}
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