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/*
* Engine.h - engine-system of LMMS
*
* Copyright (c) 2006-2014 Tobias Doerffel <tobydox/at/users.sourceforge.net>
*
* This file is part of LMMS - https://lmms.io
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this program (see COPYING); if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA.
*
*/
#ifndef ENGINE_H
#define ENGINE_H
#include <QtCore/QString>
#include <QtCore/QObject>
#include "export.h"
#include "lmms_basics.h"
class BBTrackContainer;
class DummyTrackContainer;
class FxMixer;
class ProjectJournal;
class Mixer;
class Song;
class Ladspa2LMMS;
// Note: This class is called 'LmmsCore' instead of 'Engine' because of naming
// conflicts caused by ZynAddSubFX. See https://github.com/LMMS/lmms/issues/2269
// and https://github.com/LMMS/lmms/pull/2118 for more details.
//
// The workaround was to rename Lmms' Engine so that it has a different symbol
// name in the object files, but typedef it back to 'Engine' and keep it inside
// of Engine.h so that the rest of the codebase can be oblivious to this issue
// (and it could be fixed without changing every single file).
class LmmsCore;
typedef LmmsCore Engine;
class EXPORT LmmsCore : public QObject
{
Q_OBJECT
public:
static void init( bool renderOnly );
static void destroy();
// core
static Mixer *mixer()
{
return s_mixer;
}
static FxMixer * fxMixer()
{
return s_fxMixer;
}
static Song * getSong()
{
return s_song;
}
static BBTrackContainer * getBBTrackContainer()
{
return s_bbTrackContainer;
}
static ProjectJournal * projectJournal()
{
return s_projectJournal;
}
static Ladspa2LMMS * getLADSPAManager()
{
return s_ladspaManager;
}
static DummyTrackContainer * dummyTrackContainer()
{
return s_dummyTC;
}
static float framesPerTick()
{
return s_framesPerTick;
}
static float framesPerTick(sample_rate_t sample_rate);
static void updateFramesPerTick();
static inline LmmsCore * inst()
{
if( s_instanceOfMe == NULL )
{
s_instanceOfMe = new LmmsCore();
}
return s_instanceOfMe;
}
signals:
void initProgress(const QString &msg);
private:
// small helper function which sets the pointer to NULL before actually deleting
// the object it refers to
template<class T>
static inline void deleteHelper( T * * ptr )
{
T * tmp = *ptr;
*ptr = NULL;
delete tmp;
}
static float s_framesPerTick;
// core
static Mixer *s_mixer;
static FxMixer * s_fxMixer;
static Song * s_song;
static BBTrackContainer * s_bbTrackContainer;
static ProjectJournal * s_projectJournal;
static DummyTrackContainer * s_dummyTC;
static Ladspa2LMMS * s_ladspaManager;
// even though most methods are static, an instance is needed for Qt slots/signals
static LmmsCore * s_instanceOfMe;
friend class GuiApplication;
};
#endif
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