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/*************************************************************************** |
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* * |
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* Copyright (C) 2005, 2006 Christian Schoenebeck * |
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* * |
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* This library is free software; you can redistribute it and/or modify * |
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* it under the terms of the GNU General Public License as published by * |
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* the Free Software Foundation; either version 2 of the License, or * |
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* (at your option) any later version. * |
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* * |
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* This library 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 * |
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* GNU 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 License * |
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* along with this library; if not, write to the Free Software * |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, * |
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* MA 02111-1307 USA * |
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***************************************************************************/ |
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#ifndef __LS_INSTRUMENTLOADER_H__ |
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#define __LS_INSTRUMENTLOADER_H__ |
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#include "../common/global.h" |
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#include "../common/Thread.h" |
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#include "../common/Condition.h" |
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#include "../common/RingBuffer.h" |
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#include "../Sampler.h" |
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#include "InstrumentManager.h" |
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/// Maximum numbers of instruments waiting to be loaded by the InstrumentLoader. |
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#define INSTRUMENT_LOADER_QUEUE_SIZE 200 |
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namespace LinuxSampler { |
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/** @brief Used by InstrumentManager for background tasks. |
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* |
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* This class is just an encapsulation of tasks that should be done by |
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* the InstrumentManager in the background, that is in a separate thread |
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* without blocking the calling thread. This class is thus not exported |
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* to the API. |
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*/ |
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class InstrumentManagerThread : public Thread { |
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public: |
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InstrumentManagerThread(); |
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void StartNewLoad(String Filename, uint uiInstrumentIndex, EngineChannel* pEngineChannel); |
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void StartSettingMode(InstrumentManager* pManager, const InstrumentManager::instrument_id_t& ID, InstrumentManager::mode_t Mode); |
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virtual ~InstrumentManagerThread(); |
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protected: |
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struct command_t { |
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enum cmd_type_t { |
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DIRECT_LOAD, ///< command was created by a StartNewLoad() call |
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INSTR_MODE ///< command was created by a StartSettingMode() call |
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} type; |
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EngineChannel* pEngineChannel; ///< only for DIRECT_LOAD commands |
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InstrumentManager* pManager; ///< only for INSTR_MODE commands |
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InstrumentManager::instrument_id_t instrumentId; ///< only for INSTR_MODE commands |
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InstrumentManager::mode_t mode; ///< only for INSTR_MODE commands |
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}; |
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// Instance variables. |
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RingBuffer<command_t,true>* pQueue; ///< queue with commands for loading new instruments. |
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Condition conditionJobsLeft; ///< synchronizer to block this thread until a new job arrives |
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int Main(); ///< Implementation of virtual method from class Thread. |
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}; |
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} // namespace LinuxSampler |
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#endif // __LS_INSTRUMENTLOADER_H__ |
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