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-rw-r--r--chromium/third_party/WebKit/Source/core/platform/audio/HRTFDatabaseLoader.h93
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diff --git a/chromium/third_party/WebKit/Source/core/platform/audio/HRTFDatabaseLoader.h b/chromium/third_party/WebKit/Source/core/platform/audio/HRTFDatabaseLoader.h
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--- a/chromium/third_party/WebKit/Source/core/platform/audio/HRTFDatabaseLoader.h
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-/*
- * Copyright (C) 2010 Google Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
- * its contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
- * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
- * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifndef HRTFDatabaseLoader_h
-#define HRTFDatabaseLoader_h
-
-#include "core/platform/audio/HRTFDatabase.h"
-#include "wtf/HashMap.h"
-#include "wtf/PassRefPtr.h"
-#include "wtf/RefCounted.h"
-#include "wtf/RefPtr.h"
-#include "wtf/Threading.h"
-#include "wtf/ThreadingPrimitives.h"
-
-namespace WebCore {
-
-// HRTFDatabaseLoader will asynchronously load the default HRTFDatabase in a new thread.
-
-class HRTFDatabaseLoader : public RefCounted<HRTFDatabaseLoader> {
-public:
- // Lazily creates a HRTFDatabaseLoader (if not already created) for the given sample-rate
- // and starts loading asynchronously (when created the first time).
- // Returns the HRTFDatabaseLoader.
- // Must be called from the main thread.
- static PassRefPtr<HRTFDatabaseLoader> createAndLoadAsynchronouslyIfNecessary(float sampleRate);
-
- // Both constructor and destructor must be called from the main thread.
- ~HRTFDatabaseLoader();
-
- // Returns true once the default database has been completely loaded.
- bool isLoaded() const;
-
- // waitForLoaderThreadCompletion() may be called more than once and is thread-safe.
- void waitForLoaderThreadCompletion();
-
- HRTFDatabase* database() { return m_hrtfDatabase.get(); }
-
- float databaseSampleRate() const { return m_databaseSampleRate; }
-
- // Called in asynchronous loading thread.
- void load();
-
-private:
- // Both constructor and destructor must be called from the main thread.
- explicit HRTFDatabaseLoader(float sampleRate);
-
- // If it hasn't already been loaded, creates a new thread and initiates asynchronous loading of the default database.
- // This must be called from the main thread.
- void loadAsynchronously();
-
- // Map from sample-rate to loader.
- typedef HashMap<double, HRTFDatabaseLoader*> LoaderMap;
-
- // Keeps track of loaders on a per-sample-rate basis.
- static LoaderMap* s_loaderMap; // singleton
-
- OwnPtr<HRTFDatabase> m_hrtfDatabase;
-
- // Holding a m_threadLock is required when accessing m_databaseLoaderThread.
- Mutex m_threadLock;
- ThreadIdentifier m_databaseLoaderThread;
-
- float m_databaseSampleRate;
-};
-
-} // namespace WebCore
-
-#endif // HRTFDatabaseLoader_h