1 /*****************************************************************************
3 *****************************************************************************
4 * Copyright (C) 2003 the VideoLAN team
7 * Authors: Cyril Deguet <asmax@via.ecp.fr>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
22 *****************************************************************************/
26 #include "aout_internal.h"
27 #include "equalizer.hpp"
28 #include "../utils/var_percent.hpp"
34 EqualizerBands::EqualizerBands( intf_thread_t *pIntf ): SkinObject( pIntf ),
37 for( int i = 0; i < kNbBands; i++ )
39 // Create and observe the band variables
40 VarPercent *pVar = new VarPercent( pIntf );
41 m_cBands[i] = VariablePtr( pVar );
43 pVar->addObserver( this );
48 EqualizerBands::~EqualizerBands()
50 for( int i = 0; i < kNbBands; i++ )
52 ((VarPercent*)m_cBands[i].get())->delObserver( this );
57 void EqualizerBands::set( string bands )
60 stringstream ss( bands );
64 for( int i = 0; i < kNbBands; i++ )
67 // Set the band value in percent
68 ((VarPercent*)m_cBands[i].get())->set( (val + 20) / 40 );
74 VariablePtr EqualizerBands::getBand( int band )
76 return m_cBands[band];
80 void EqualizerBands::onUpdate( Subject<VarPercent,void*> &rBand, void *arg )
82 // Make sure we are not called from set()
87 // Write one digit after the floating point
88 ss << setprecision( 1 ) << setiosflags( ios::fixed );
90 // Convert the band values to a string
91 val = 40 * ((VarPercent*)m_cBands[0].get())->get() - 20;
93 for( int i = 1; i < kNbBands; i++ )
95 val = 40 * ((VarPercent*)m_cBands[i].get())->get() - 20;
99 aout_instance_t *pAout = (aout_instance_t *)vlc_object_find( getIntf(),
100 VLC_OBJECT_AOUT, FIND_ANYWHERE );
101 char *bands = (char*)ss.str().c_str();
102 config_PutPsz( getIntf(), "equalizer-bands", bands );
105 // Update the audio output
106 var_SetString( pAout, "equalizer-bands", bands );
107 vlc_object_release( pAout );
113 EqualizerPreamp::EqualizerPreamp( intf_thread_t *pIntf ): VarPercent( pIntf )
116 VarPercent::set( 0.8 );
120 void EqualizerPreamp::set( float percentage, bool updateVLC )
122 VarPercent::set( percentage );
124 // Avoid infinite loop
127 float val = 40 * percentage - 20;
129 aout_instance_t *pAout = (aout_instance_t *)vlc_object_find( getIntf(),
130 VLC_OBJECT_AOUT, FIND_ANYWHERE );
131 config_PutFloat( getIntf(), "equalizer-preamp", val );
134 // Update the audio output
135 var_SetFloat( pAout, "equalizer-preamp", val );
136 vlc_object_release( pAout );