/[svn]/linuxsampler/trunk/src/engines/Engine.h
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Annotation of /linuxsampler/trunk/src/engines/Engine.h

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Revision 1012 - (hide annotations) (download) (as text)
Sun Jan 7 15:52:36 2007 UTC (13 years, 6 months ago) by capela
File MIME type: text/x-c++hdr
File size: 3847 byte(s)
* Fixed a memory leak due to EngineFactory::Destroy() not doing it
as an actual destructor and just removing the engine instance from
factory stock and all instances allocated via EngineFactory::Create()
never got delete'd and thus their destructors never called. This bug
was evident while having many mapped instruments and querying the
instrument status via GET MIDI_INSTRUMENT INFO command, eating up
system memory very quickly and never let it go.

1 schoenebeck 887 /***************************************************************************
2     * *
3     * LinuxSampler - modular, streaming capable sampler *
4     * *
5 capela 1012 * Copyright (C) 2003,2004 by Benno Senoner and Christian Schoenebeck *
6     * Copyright (C) 2005-2007 Christian Schoenebeck *
7 schoenebeck 887 * *
8     * This program is free software; you can redistribute it and/or modify *
9     * it under the terms of the GNU General Public License as published by *
10     * the Free Software Foundation; either version 2 of the License, or *
11     * (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 *
16     * GNU General Public License for more details. *
17     * *
18     * You should have received a copy of the GNU General Public License *
19     * along with this program; if not, write to the Free Software *
20     * Foundation, Inc., 59 Temple Place, Suite 330, Boston, *
21     * MA 02111-1307 USA *
22     ***************************************************************************/
23    
24     #ifndef __LS_ENGINE_H__
25     #define __LS_ENGINE_H__
26    
27     #include "../common/global.h"
28 schoenebeck 947 #include "InstrumentManager.h"
29 schoenebeck 887
30     namespace LinuxSampler {
31    
32     /** @brief LinuxSampler Sampler Engine Interface
33     *
34     * Abstract base interface class for all LinuxSampler engines which
35     * defines all mandatory methods which have to be implemented by all
36     * sampler engine implementations.
37     */
38     class Engine {
39     public:
40    
41     /////////////////////////////////////////////////////////////////
42     // abstract methods
43     // (these have to be implemented by the descendant)
44    
45     virtual int RenderAudio(uint Samples) = 0;
46     virtual void SendSysex(void* pData, uint Size) = 0;
47     virtual void Reset() = 0;
48     virtual void Enable() = 0;
49     virtual void Disable() = 0;
50     virtual uint VoiceCount() = 0;
51     virtual uint VoiceCountMax() = 0;
52     virtual bool DiskStreamSupported() = 0;
53     virtual uint DiskStreamCount() = 0;
54     virtual uint DiskStreamCountMax() = 0;
55     virtual String DiskStreamBufferFillBytes() = 0;
56     virtual String DiskStreamBufferFillPercentage() = 0;
57     virtual String Description() = 0;
58     virtual String Version() = 0;
59     virtual String EngineName() = 0;
60    
61 schoenebeck 947 /**
62     * Returns pointer to the Engine's InstrumentManager or NULL if
63     * the Engine does not provide an InstrumentManager.
64     *
65     * <b>Important:</b> All engine instances of the same engine
66     * type have to return the same InstrumentManager, that is all
67     * instances of the same engine type have to share one and
68     * the same InstrumentManager object.
69     */
70     virtual InstrumentManager* GetInstrumentManager() = 0;
71    
72 schoenebeck 887 protected:
73     virtual ~Engine() {}; // MUST only be destroyed by EngineFactory
74 capela 1012 void Unregister(); // Remove self from EngineFactory.
75 schoenebeck 887 friend class EngineFactory;
76     };
77    
78     } // namespace LinuxSampler
79    
80     #endif // __LS_ENGINE_H__

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