1 files changed, 114 insertions, 0 deletions
diff --git a/src/audiocacheeventhandler.h b/src/audiocacheeventhandler.h
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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};
+};