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https://github.com/LMMS/lmms.git
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857de8d2c8
Well, this commit got a bit out of hand, what with 26 files changed. Oh well. Basically, we're using the buffermanager to dispense temporary buffers for playhandles and audioports to use. This allows us to change the way playhandles work. Earlier, playhandles of the same track were waiting in line to push their output to the audioport. This was of course inefficient, so now they just register themselves to the port, then the port handles mixing the buffers. Caveat: this is still a work in progress, the vol/pan knobs on instruments are temporarily non-functional - will be fixed in the next commit, but I have to get some sleep now.
160 lines
3.0 KiB
C++
160 lines
3.0 KiB
C++
/*
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* PlayHandle.h - base class PlayHandle - core of rendering engine
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*
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* Copyright (c) 2004-2014 Tobias Doerffel <tobydox/at/users.sourceforge.net>
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*
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* This file is part of LMMS - http://lmms.io
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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/QThread>
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#include <QtCore/QVector>
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#include <QtCore/QMutex>
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#include "ThreadableJob.h"
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#include "lmms_basics.h"
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class track;
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class AudioPort;
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class PlayHandle : public ThreadableJob
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{
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public:
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enum Types
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{
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TypeNotePlayHandle,
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TypeInstrumentPlayHandle,
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TypeSamplePlayHandle,
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TypePresetPreviewHandle,
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TypeCount
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} ;
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typedef Types Type;
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PlayHandle( const Type type, f_cnt_t offset = 0 );
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PlayHandle & operator = ( PlayHandle & p )
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{
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m_type = p.m_type;
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m_offset = p.m_offset;
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m_affinity = p.m_affinity;
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return *this;
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}
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virtual ~PlayHandle();
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virtual bool affinityMatters() const
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{
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return false;
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}
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const QThread* affinity() const
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{
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return m_affinity;
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}
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Type type() const
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{
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return m_type;
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}
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// required for ThreadableJob
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virtual void doProcessing();
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virtual bool requiresProcessing() const
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{
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return !isFinished();
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}
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void lock()
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{
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m_processingLock.lock();
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}
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void unlock()
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{
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m_processingLock.unlock();
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}
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bool tryLock()
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{
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return m_processingLock.tryLock();
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}
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virtual void play( sampleFrame* buffer ) = 0;
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virtual bool isFinished() const = 0;
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// returns the frameoffset at the start of the playhandle,
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// ie. how many empty frames should be inserted at the start of the first period
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f_cnt_t offset() const
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{
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return m_offset;
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}
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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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bool usesBuffer() const
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{
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return m_usesBuffer;
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}
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void setUsesBuffer( const bool b )
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{
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m_usesBuffer = b;
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}
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AudioPort * audioPort()
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{
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return m_audioPort;
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}
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void setAudioPort( AudioPort * port )
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{
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m_audioPort = port;
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}
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void releaseBuffer();
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sampleFrame * buffer()
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{
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return m_playHandleBuffer;
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}
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private:
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Type m_type;
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f_cnt_t m_offset;
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QThread* m_affinity;
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QMutex m_processingLock;
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sampleFrame * m_playHandleBuffer;
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bool m_usesBuffer;
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AudioPort * m_audioPort;
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} ;
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typedef QList<PlayHandle *> PlayHandleList;
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typedef QList<const PlayHandle *> ConstPlayHandleList;
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#endif
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