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+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ * audiocacheeventhandler.h
+ *
+ * Sun Jan 3 19:57:55 CET 2016
+ * Copyright 2016 Bent Bisballe Nyeng
+ * deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ * This file is part of DrumGizmo.
+ *
+ * DrumGizmo 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.
+ *
+ * DrumGizmo 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 DrumGizmo; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+#pragma once
+
+#include <list>
+#include <vector>
+#include <mutex>
+
+#include "thread.h"
+#include "semaphore.h"
+#include "mutex.h"
+
+#include "audiocachefile.h"
+#include "audiocacheidmanager.h"
+
+class CacheEvent;
+
+class AudioCacheEventHandler
+ : protected Thread
+{
+public:
+ AudioCacheEventHandler(AudioCacheIDManager& id_manager);
+ ~AudioCacheEventHandler();
+
+ //! Start event handler thread.
+ //! This method blocks until the thread has actually been started.
+ void start();
+
+ //! Stop event handler thread.
+ //! This method blocks until the thread has actually been stopped.
+ void stop();
+
+ //! Set thread status and start/stop thread accordingly.
+ //! \param threaded Set to true to start thread or false to stop it.
+ void setThreaded(bool threaded);
+
+ //! Get current threaded status.
+ bool getThreaded() const;
+
+ //! Lock thread mutex.
+ //! This methods are supplied to make this class lockable by std::lock_guard
+ void lock();
+
+ //! Unlock thread mutex.
+ //! This methods are supplied to make this class lockable by std::lock_guard
+ void unlock();
+
+ void pushLoadNextEvent(AudioCacheFile* afile, size_t channel,
+ size_t pos, sample_t* buffer,
+ volatile bool* ready);
+ void pushCloseEvent(cacheid_t id);
+
+ void setChunkSize(size_t chunksize);
+ size_t chunkSize();
+
+ AudioCacheFile& openFile(const std::string& filename);
+
+protected:
+ void clearEvents();
+
+ void handleLoadNextEvent(CacheEvent& cache_event);
+
+ //! Lock the mutex and calls handleCloseCache
+ void handleCloseEvent(CacheEvent& cache_event);
+
+ //! Close decrease the file ref and release the cache id.
+ void handleCloseCache(cacheid_t cacheid);
+
+ void handleEvent(CacheEvent& cache_event);
+
+ // From Thread
+ void thread_main() override;
+
+ void pushEvent(CacheEvent& cache_event);
+
+ AudioCacheFiles files;
+
+ std::mutex mutex;
+
+ std::list<CacheEvent>* eventqueue;
+
+ bool threaded{false};
+ Semaphore sem;
+ Semaphore sem_run;
+ bool running{false};
+
+ AudioCacheIDManager& id_manager;
+
+ size_t chunksize{1024};
+};