modules/gui/skins2/vars/equalizer.hpp

   1 /*****************************************************************************
   2  * equalizer.hpp
   3  *****************************************************************************
   4  * Copyright (C) 2003 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Cyril Deguet     <asmax@via.ecp.fr>
   8  *
   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.
  13  *
  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.
  18  *
  19  * You should have received a copy of the GNU General Public License along
  20  * with this program; if not, write to the Free Software Foundation, Inc.,
  21  * 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  22  *****************************************************************************/
  23
  24 #ifndef EQUALIZER_HPP
  25 #define EQUALIZER_HPP
  26
  27 #include "../utils/var_percent.hpp"
  28 #include <string>
  29
  30
  31 /// Variable for graphical equalizer
  32 class EqualizerBands: public SkinObject, public Observer<VarPercent>
  33 {
  34 public:
  35     /// Number of bands
  36     static const int kNbBands = 10;
  37
  38     EqualizerBands( intf_thread_t *pIntf );
  39     virtual ~EqualizerBands();
  40
  41     /// Set the equalizer bands from a configuration string,
  42     /// e.g. "1 5.2 -3.6 0 0 2.5 0 0 0 0"
  43     void set( string bands );
  44
  45     /// Return the variable for a specific band
  46     VariablePtr getBand( int band );
  47
  48 private:
  49     /// Array of equalizer bands
  50     VariablePtr m_cBands[kNbBands];
  51     /// Flag set when an update is in progress
  52     bool m_isUpdating;
  53
  54     /// Callback for band updates
  55     virtual void onUpdate( Subject<VarPercent> &rBand , void *);
  56 };
  57
  58
  59 /// Variable for equalizer preamp
  60 class EqualizerPreamp: public VarPercent
  61 {
  62 public:
  63     EqualizerPreamp( intf_thread_t *pIntf );
  64     virtual ~EqualizerPreamp() { }
  65
  66     virtual void set( float percentage, bool updateVLC );
  67
  68     void set( float percentage ) { set( percentage, true ); }
  69 };
  70
  71
  72 #endif