src/plugins/InstrumentEditorFactory.h

/***************************************************************************
 *                                                                         *
 *   Copyright (C) 2007 - 2014 Christian Schoenebeck                       *
 *                                                                         *
 *   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; if not, write to the Free Software           *
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston,                 *
 *   MA  02111-1307  USA                                                   *
 ***************************************************************************/

#ifndef LS_INSTRUMENT_EDITOR_FACTORY_H
#define LS_INSTRUMENT_EDITOR_FACTORY_H

#include <map>
#include <vector>
#include <list>

#include "../common/Exception.h"
#include "InstrumentEditor.h"

#if defined(WIN32)
# define REGISTER_INSTRUMENT_EDITOR(PluginClass) \
    extern "C" __declspec(dllexport) void* \
    createInstrumentEditorInnerFactory() { \
        return new LinuxSampler::InstrumentEditorFactory::InnerFactoryTemplate<PluginClass>(); \
    }
#else
# define REGISTER_INSTRUMENT_EDITOR(PluginClass) \
    LinuxSampler::InstrumentEditorFactory::InnerFactoryRegistrator<PluginClass> \
    __auto_register_instrument_editor__##PluginClass;
#endif

namespace LinuxSampler {

    class InstrumentEditorFactory {
    public:
        class InnerFactory {
        public:
            virtual ~InnerFactory() {}
            virtual InstrumentEditor* Create() = 0;
            virtual void Destroy(InstrumentEditor* pEditor) = 0;
        };

        template<class PluginClass_T>
        class InnerFactoryTemplate : public InnerFactory {
        public:
            virtual InstrumentEditor* Create() {
                return new PluginClass_T();
            }

            virtual void Destroy(InstrumentEditor* pEditor)  {
                delete pEditor;
            }
        };

        template<class PluginClass_T>
        class InnerFactoryRegistrator {
        public:
            InnerFactoryRegistrator() {
                InnerFactoryTemplate<PluginClass_T>* pInnerFactory =
                    new InnerFactoryTemplate<PluginClass_T>();
                InstrumentEditor* pEditor = pInnerFactory->Create();
                if (InnerFactories.count(pEditor->Name())) {
                    pInnerFactory->Destroy(pEditor);
                    delete pInnerFactory;
                } else {
                    InnerFactories[pEditor->Name()] = pInnerFactory;
                    pInnerFactory->Destroy(pEditor);
                }
            }

           ~InnerFactoryRegistrator() {
                InnerFactoryTemplate<PluginClass_T> innerFactory;
                InstrumentEditor* pEditor = innerFactory.Create();
                if (InnerFactories.count(pEditor->Name())) {
                    InnerFactory* pZombie =
                        InnerFactories[pEditor->Name()];
                    InnerFactories.erase(pEditor->Name());
                    if (pZombie) delete pZombie;
                }
                innerFactory.Destroy(pEditor);
            }
        };

        static InstrumentEditor*   Create(String InstrumentEditorName) throw (Exception);
        static void                Destroy(InstrumentEditor* pInstrumentEditor) throw (Exception);
        static std::vector<String> AvailableEditors();
        static String              AvailableEditorsAsString();
        static std::vector<String> MatchingEditors(String sTypeName, String sTypeVersion);
        static void                LoadPlugins();
        static void                ClosePlugins();

    protected:
        static std::map<String, InnerFactory*> InnerFactories;
        static bool                            bPluginsLoaded;
        static std::list<void*>                LoadedDLLs;

    private:
        static bool LoadPlugins(String plugindir);
    };

} // namespace LinuxSampler

#endif // LS_INSTRUMENT_EDITOR_FACTORY_H
1	/***************************************************************************
2	* *
3	* Copyright (C) 2007 - 2014 Christian Schoenebeck *
4	* *
5	* This program is free software; you can redistribute it and/or modify *
6	* it under the terms of the GNU General Public License as published by *
7	* the Free Software Foundation; either version 2 of the License, or *
8	* (at your option) any later version. *
9	* *
10	* This program is distributed in the hope that it will be useful, *
11	* but WITHOUT ANY WARRANTY; without even the implied warranty of *
12	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13	* GNU General Public License for more details. *
14	* *
15	* You should have received a copy of the GNU General Public License *
16	* along with this program; if not, write to the Free Software *
17	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, *
18	* MA 02111-1307 USA *
19	***************************************************************************/
20
21	#ifndef LS_INSTRUMENT_EDITOR_FACTORY_H
22	#define LS_INSTRUMENT_EDITOR_FACTORY_H
23
24	#include <map>
25	#include <vector>
26	#include <list>
27
28	#include "../common/Exception.h"
29	#include "InstrumentEditor.h"
30
31	#if defined(WIN32)
32	# define REGISTER_INSTRUMENT_EDITOR(PluginClass) \
33	extern "C" __declspec(dllexport) void* \
34	createInstrumentEditorInnerFactory() { \
35	return new LinuxSampler::InstrumentEditorFactory::InnerFactoryTemplate<PluginClass>(); \
36	}
37	#else
38	# define REGISTER_INSTRUMENT_EDITOR(PluginClass) \
39	LinuxSampler::InstrumentEditorFactory::InnerFactoryRegistrator<PluginClass> \
40	__auto_register_instrument_editor__##PluginClass;
41	#endif
42
43	namespace LinuxSampler {
44
45	class InstrumentEditorFactory {
46	public:
47	class InnerFactory {
48	public:
49	virtual ~InnerFactory() {}
50	virtual InstrumentEditor* Create() = 0;
51	virtual void Destroy(InstrumentEditor* pEditor) = 0;
52	};
53
54	template<class PluginClass_T>
55	class InnerFactoryTemplate : public InnerFactory {
56	public:
57	virtual InstrumentEditor* Create() {
58	return new PluginClass_T();
59	}
60
61	virtual void Destroy(InstrumentEditor* pEditor) {
62	delete pEditor;
63	}
64	};
65
66	template<class PluginClass_T>
67	class InnerFactoryRegistrator {
68	public:
69	InnerFactoryRegistrator() {
70	InnerFactoryTemplate<PluginClass_T>* pInnerFactory =
71	new InnerFactoryTemplate<PluginClass_T>();
72	InstrumentEditor* pEditor = pInnerFactory->Create();
73	if (InnerFactories.count(pEditor->Name())) {
74	pInnerFactory->Destroy(pEditor);
75	delete pInnerFactory;
76	} else {
77	InnerFactories[pEditor->Name()] = pInnerFactory;
78	pInnerFactory->Destroy(pEditor);
79	}
80	}
81
82	~InnerFactoryRegistrator() {
83	InnerFactoryTemplate<PluginClass_T> innerFactory;
84	InstrumentEditor* pEditor = innerFactory.Create();
85	if (InnerFactories.count(pEditor->Name())) {
86	InnerFactory* pZombie =
87	InnerFactories[pEditor->Name()];
88	InnerFactories.erase(pEditor->Name());
89	if (pZombie) delete pZombie;
90	}
91	innerFactory.Destroy(pEditor);
92	}
93	};
94
95	static InstrumentEditor* Create(String InstrumentEditorName) throw (Exception);
96	static void Destroy(InstrumentEditor* pInstrumentEditor) throw (Exception);
97	static std::vector<String> AvailableEditors();
98	static String AvailableEditorsAsString();
99	static std::vector<String> MatchingEditors(String sTypeName, String sTypeVersion);
100	static void LoadPlugins();
101	static void ClosePlugins();
102
103	protected:
104	static std::map<String, InnerFactory*> InnerFactories;
105	static bool bPluginsLoaded;
106	static std::list<void*> LoadedDLLs;
107
108	private:
109	static bool LoadPlugins(String plugindir);
110	};
111
112	} // namespace LinuxSampler
113
114	#endif // LS_INSTRUMENT_EDITOR_FACTORY_H