include/FxMixer.h

   1 /*
   2  * FxMixer.h - effect-mixer for LMMS
   3  *
   4  * Copyright (c) 2008-2009 Tobias Doerffel <tobydox/at/users.sourceforge.net>
   5  *
   6  * This file is part of Linux MultiMedia Studio - http://lmms.sourceforge.net
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2 of the License, or (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public
  19  * License along with this program (see COPYING); if not, write to the
  20  * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  21  * Boston, MA 02110-1301 USA.
  22  *
  23  */
  24
  25 #ifndef _FX_MIXER_H
  26 #define _FX_MIXER_H
  27
  28 #include "Model.h"
  29 #include "mixer.h"
  30 #include "EffectChain.h"
  31 #include "JournallingObject.h"
  32
  33
  34 const int NumFxChannels = 64;
  35
  36
  37 struct FxChannel
  38 {
  39         FxChannel( Model * _parent );
  40         ~FxChannel();
  41
  42         EffectChain m_fxChain;
  43         bool m_used;
  44         bool m_stillRunning;
  45         float m_peakLeft;
  46         float m_peakRight;
  47         sampleFrame * m_buffer;
  48         BoolModel m_muteModel;
  49         FloatModel m_volumeModel;
  50         QString m_name;
  51         QMutex m_lock;
  52
  53 } ;
  54
  55
  56
  57 class FxMixer : public JournallingObject, public Model
  58 {
  59 public:
  60         FxMixer();
  61         virtual ~FxMixer();
  62
  63         void mixToChannel( const sampleFrame * _buf, fx_ch_t _ch );
  64         void processChannel( fx_ch_t _ch, sampleFrame * _buf = NULL );
  65
  66         void prepareMasterMix();
  67         void masterMix( sampleFrame * _buf );
  68
  69
  70         void clear();
  71
  72         virtual void saveSettings( QDomDocument & _doc, QDomElement & _parent );
  73         virtual void loadSettings( const QDomElement & _this );
  74
  75         virtual QString nodeName() const
  76         {
  77                 return "fxmixer";
  78         }
  79
  80         FxChannel * effectChannel( int _ch )
  81         {
  82                 if( _ch >= 0 && _ch <= NumFxChannels )
  83                 {
  84                         return m_fxChannels[_ch];
  85                 }
  86                 return NULL;
  87         }
  88
  89
  90 private:
  91         FxChannel * m_fxChannels[NumFxChannels+1];      // +1 = master
  92
  93
  94         friend class mixerWorkerThread;
  95         friend class FxMixerView;
  96
  97 } ;
  98
  99
 100 #endif