1 /*****************************************************************************
3 *****************************************************************************
4 * Copyright (C) 2003 the VideoLAN team
6 * Authors: Cyril Deguet <asmax@via.ecp.fr>
7 * Olivier Teulière <ipkiss@via.ecp.fr>
8 * Erwan Tulou <erwan10 aT videolan Dot org>
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
23 *****************************************************************************/
29 #include <vlc_common.h>
30 #include <vlc_player.h>
31 #include <vlc_playlist.h>
36 Volume::Volume( intf_thread_t *pIntf ): VarPercent( pIntf )
38 // compute preferred step in [0.,1.] range
39 m_step = config_GetFloat( "volume-step" ) / (float)AOUT_VOLUME_MAX;
41 // set current volume from the playlist
42 setVolume( 0.0f, false );
46 void Volume::set( float percentage, bool updateVLC )
48 VarPercent::set( percentage );
51 vlc_player_t *player = vlc_playlist_GetPlayer( getPL());
52 vlc_player_aout_SetVolume( player, getVolume() );
57 void Volume::setVolume( float volume, bool updateVLC )
59 // translate from [0.,AOUT_VOLUME_MAX/AOUT_VOLUME_DEFAULT] into [0.,1.]
60 float percentage = (volume > 0.f ) ?
61 volume * AOUT_VOLUME_DEFAULT / AOUT_VOLUME_MAX :
63 set( percentage, updateVLC );
67 float Volume::getVolume() const
69 // translate from [0.,1.] into [0.,AOUT_VOLUME_MAX/AOUT_VOLUME_DEFAULT]
70 return get() * AOUT_VOLUME_MAX / AOUT_VOLUME_DEFAULT;
74 std::string Volume::getAsStringPercent() const
76 int value = lround( getVolume() * 100. );
77 // 0 <= value <= 200, so we need 4 chars
79 snprintf( str, 4, "%i", value );
80 return std::string(str);