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git-svn-id: https://lmms.svn.sf.net/svnroot/lmms/trunk/lmms@890 0778d3d1-df1d-0410-868b-ea421aaaa00d
104 lines
2.1 KiB
C++
104 lines
2.1 KiB
C++
/*
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* play_handle.h - base-class playHandle which is needed by
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* LMMS-Player-Engine
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*
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* Copyright (c) 2004-2008 Tobias Doerffel <tobydox/at/users.sourceforge.net>
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*
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* This file is part of Linux MultiMedia Studio - http://lmms.sourceforge.net
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program (see COPYING); if not, write to the
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* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301 USA.
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*
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*/
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#ifndef _PLAY_HANDLE_H
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#define _PLAY_HANDLE_H
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#include <QtCore/QVector>
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#include "types.h"
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class track;
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class playHandle
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{
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public:
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enum types
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{
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NotePlayHandle,
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InstrumentPlayHandle,
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SamplePlayHandle,
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PresetPreviewHandle
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} ;
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playHandle( const types _type, f_cnt_t _offset = 0 ) :
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m_type( _type ),
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m_offset( _offset )
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{
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}
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virtual inline ~playHandle()
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{
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}
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inline types type( void ) const
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{
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return( m_type );
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}
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virtual void play( bool _try_parallelizing,
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sampleFrame * _working_buffer ) = 0;
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virtual bool done( void ) const = 0;
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// returns how many frames this play-handle is aligned ahead, i.e.
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// at which position it is inserted in the according buffer
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inline f_cnt_t offset( void ) const
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{
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return ( m_offset );
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}
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inline void setOffset( f_cnt_t _offset )
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{
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m_offset = _offset;
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}
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virtual bool isFromTrack( const track * _track ) const = 0;
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virtual bool supportsParallelizing( void ) const
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{
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return( FALSE );
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}
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virtual void waitForWorkerThread( void )
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{
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}
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private:
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types m_type;
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f_cnt_t m_offset;
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} ;
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typedef QVector<playHandle *> playHandleVector;
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typedef QVector<const playHandle *> constPlayHandleVector;
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#endif
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