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 "equalizer.hpp"
27 #include "../utils/var_percent.hpp"
32 EqualizerBands::EqualizerBands( intf_thread_t *pIntf ): SkinObject( pIntf ),
35 for( int i = 0; i < kNbBands; i++ )
37 // Create and observe the band variables
38 VarPercent *pVar = new VarPercent( pIntf );
39 m_cBands[i] = VariablePtr( pVar );
41 pVar->addObserver( this );
46 EqualizerBands::~EqualizerBands()
48 for( int i = 0; i < kNbBands; i++ )
50 ((VarPercent*)m_cBands[i].get())->delObserver( this );
55 void EqualizerBands::set( string bands )
58 stringstream ss( bands );
62 for( int i = 0; i < kNbBands; i++ )
65 // Set the band value in percent
66 ((VarPercent*)m_cBands[i].get())->set( (val + 20) / 40 );
72 VariablePtr EqualizerBands::getBand( int band )
74 return m_cBands[band];
78 void EqualizerBands::onUpdate( Subject<VarPercent> &rBand, void *arg )
80 // Make sure we are not called from set()
85 // Write one digit after the floating point
86 ss << setprecision( 1 ) << setiosflags( ios::fixed );
88 // Convert the band values to a string
89 val = 40 * ((VarPercent*)m_cBands[0].get())->get() - 20;
91 for( int i = 1; i < kNbBands; i++ )
93 val = 40 * ((VarPercent*)m_cBands[i].get())->get() - 20;
98 string bands = ss.str();
99 aout_instance_t *pAout = (aout_instance_t *)vlc_object_find( getIntf(),
100 VLC_OBJECT_AOUT, FIND_ANYWHERE );
101 config_PutPsz( getIntf(), "equalizer-bands", bands.c_str() );
104 // Update the audio output
105 var_SetString( pAout, "equalizer-bands", (char*)bands.c_str() );
106 vlc_object_release( pAout );
112 EqualizerPreamp::EqualizerPreamp( intf_thread_t *pIntf ): VarPercent( pIntf )
115 VarPercent::set( 0.8 );
119 void EqualizerPreamp::set( float percentage, bool updateVLC )
121 VarPercent::set( percentage );
123 // Avoid infinite loop
126 float val = 40 * percentage - 20;
128 aout_instance_t *pAout = (aout_instance_t *)vlc_object_find( getIntf(),
129 VLC_OBJECT_AOUT, FIND_ANYWHERE );
130 config_PutFloat( getIntf(), "equalizer-preamp", val );
133 // Update the audio output
134 var_SetFloat( pAout, "equalizer-preamp", val );
135 vlc_object_release( pAout );