src/network/lscpinstrumentloader.h

/***************************************************************************
 *                                                                         *
 *   Copyright (C) 2005 Christian Schoenebeck                              *
 *                                                                         *
 *   This library 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 library 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 library; if not, write to the Free Software           *
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston,                 *
 *   MA  02111-1307  USA                                                   *
 ***************************************************************************/

#ifndef __LSCPINSTRUMENTLOADER_H__
#define __LSCPINSTRUMENTLOADER_H__

#include "../common/global.h"
#include "../common/Thread.h"
#include "../common/Condition.h"
#include "../common/RingBuffer.h"
#include "../Sampler.h"

/// Maximum numbers of instruments waiting to be loaded by the LSCPInstrumentLoader.
#define INSTRUMENT_LOADER_QUEUE_SIZE    200

using namespace LinuxSampler;

/**
 * Instrument loader thread for the LinuxSampler Control Protocol (LSCP)
 * Server for loading instruments in the background. This loader will only
 * load one instrument by one. The thread will actually only be created once
 * StartnewLoad() method was called the first time. After that the thread
 * will exist for the whole life time of the LSCPInstrumentLoader instance
 * and just block until new loading jobs arrive.
 */
class LSCPInstrumentLoader : public Thread {
    public:
        LSCPInstrumentLoader();
        void StartNewLoad(String Filename, uint uiInstrumentIndex, Engine* pEngine);
        virtual ~LSCPInstrumentLoader();
    protected:
        struct command_t {
            String* pFilename;
            uint    uiInstrumentIndex;
            Engine* pEngine;
        };

        // Instance variables.
        RingBuffer<command_t>* pQueue; ///< queue with commands for loading new instruments.
        Condition              conditionJobsLeft; ///< synchronizer to block this thread until a new job arrives

        int Main(); ///< Implementation of virtual method from class Thread.
};

#endif // __LSCPINSTRUMENTLOADER_H__
1	/***************************************************************************
2	* *
3	* Copyright (C) 2005 Christian Schoenebeck *
4	* *
5	* This library 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 library 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 library; 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 __LSCPINSTRUMENTLOADER_H__
22	#define __LSCPINSTRUMENTLOADER_H__
23
24	#include "../common/global.h"
25	#include "../common/Thread.h"
26	#include "../common/Condition.h"
27	#include "../common/RingBuffer.h"
28	#include "../Sampler.h"
29
30	/// Maximum numbers of instruments waiting to be loaded by the LSCPInstrumentLoader.
31	#define INSTRUMENT_LOADER_QUEUE_SIZE 200
32
33	using namespace LinuxSampler;
34
35	/**
36	* Instrument loader thread for the LinuxSampler Control Protocol (LSCP)
37	* Server for loading instruments in the background. This loader will only
38	* load one instrument by one. The thread will actually only be created once
39	* StartnewLoad() method was called the first time. After that the thread
40	* will exist for the whole life time of the LSCPInstrumentLoader instance
41	* and just block until new loading jobs arrive.
42	*/
43	class LSCPInstrumentLoader : public Thread {
44	public:
45	LSCPInstrumentLoader();
46	void StartNewLoad(String Filename, uint uiInstrumentIndex, Engine* pEngine);
47	virtual ~LSCPInstrumentLoader();
48	protected:
49	struct command_t {
50	String* pFilename;
51	uint uiInstrumentIndex;
52	Engine* pEngine;
53	};
54
55	// Instance variables.
56	RingBuffer<command_t>* pQueue; ///< queue with commands for loading new instruments.
57	Condition conditionJobsLeft; ///< synchronizer to block this thread until a new job arrives
58
59	int Main(); ///< Implementation of virtual method from class Thread.
60	};
61
62	#endif // __LSCPINSTRUMENTLOADER_H__