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 *****************************************************************************/
28 #include <vlc_common.h>
29 #include <vlc_playlist.h>
30 #include <vlc_input.h>
32 #include "equalizer.hpp"
33 #include "../utils/var_percent.hpp"
38 EqualizerBands::EqualizerBands( intf_thread_t *pIntf ): SkinObject( pIntf ),
41 for( int i = 0; i < kNbBands; i++ )
43 // Create and observe the band variables
44 VarPercent *pVar = new VarPercent( pIntf );
45 m_cBands[i] = VariablePtr( pVar );
47 pVar->addObserver( this );
52 EqualizerBands::~EqualizerBands()
54 for( int i = 0; i < kNbBands; i++ )
56 ((VarPercent*)m_cBands[i].get())->delObserver( this );
61 void EqualizerBands::set( string bands )
64 stringstream ss( bands );
68 for( int i = 0; i < kNbBands; i++ )
71 // Set the band value in percent
72 ((VarPercent*)m_cBands[i].get())->set( (val + 20) / 40 );
78 VariablePtr EqualizerBands::getBand( int band )
80 return m_cBands[band];
84 void EqualizerBands::onUpdate( Subject<VarPercent> &rBand, void *arg )
86 (void)rBand; (void)arg;
87 audio_output_t *pAout = NULL;
89 playlist_t *pPlaylist = getIntf()->p_sys->p_playlist;
90 input_thread_t *pInput = playlist_CurrentInput( pPlaylist );
92 pAout = input_GetAout( pInput );
94 // Make sure we are not called from set()
99 // Write one digit after the floating point
100 ss << setprecision( 1 ) << setiosflags( ios::fixed );
102 // Convert the band values to a string
103 val = 40 * ((VarPercent*)m_cBands[0].get())->get() - 20;
105 for( int i = 1; i < kNbBands; i++ )
107 val = 40 * ((VarPercent*)m_cBands[i].get())->get() - 20;
111 string bands = ss.str();
113 config_PutPsz( getIntf(), "equalizer-bands", bands.c_str() );
116 // Update the audio output
117 var_SetString( pAout, "equalizer-bands", (char*)bands.c_str() );
122 vlc_object_release( pAout );
124 vlc_object_release( pInput );
128 EqualizerPreamp::EqualizerPreamp( intf_thread_t *pIntf ): VarPercent( pIntf )
131 VarPercent::set( 0.8 );
135 void EqualizerPreamp::set( float percentage, bool updateVLC )
137 audio_output_t *pAout = NULL;
139 playlist_t *pPlaylist = getIntf()->p_sys->p_playlist;
140 input_thread_t *pInput = playlist_CurrentInput( pPlaylist );
142 pAout = input_GetAout( pInput );
144 VarPercent::set( percentage );
146 // Avoid infinite loop
149 float val = 40 * percentage - 20;
151 config_PutFloat( getIntf(), "equalizer-preamp", val );
154 // Update the audio output
155 var_SetFloat( pAout, "equalizer-preamp", val );
160 vlc_object_release( pAout );
162 vlc_object_release( pInput );