79 lines
1.9 KiB
C++
79 lines
1.9 KiB
C++
/* This file is part of Om. Copyright (C) 2006 Dave Robillard.
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*
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* Om is free software; you can redistribute it and/or modify it under the
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* terms of the GNU General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at your option) any later
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* version.
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*
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* Om is distributed in the hope that it will be useful, but WITHOUT ANY
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* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef POSTPROCESSOR_H
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#define POSTPROCESSOR_H
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#include <pthread.h>
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#include "util/types.h"
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#include "util/Queue.h"
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#include "util/Semaphore.h"
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namespace Om {
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class Event;
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/** Processor for Events after leaving the audio thread.
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*
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* The audio thread pushes events to this when it is done with them (which
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* is realtime-safe), which signals the processing thread through a semaphore
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* to handle the event and pass it on to the Maid.
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*
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* \ingroup engine
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*/
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class PostProcessor
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{
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public:
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PostProcessor(size_t queue_size);
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~PostProcessor();
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void start();
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void stop();
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inline void push(Event* const ev);
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void signal();
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private:
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// Prevent copies
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PostProcessor(const PostProcessor&);
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PostProcessor& operator=(const PostProcessor&);
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Queue<Event*> m_events;
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static void* process_events(void* me);
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void* m_process_events();
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pthread_t m_process_thread;
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bool m_thread_exists;
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static bool m_process_thread_exit_flag;
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Semaphore m_semaphore;
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};
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/** Push an event on to the process queue, realtime-safe, not thread-safe.
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*/
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inline void
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PostProcessor::push(Event* const ev)
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{
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m_events.push(ev);
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}
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} // namespace Om
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#endif // POSTPROCESSOR_H
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