/* * Copyright (C) 2011 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. * * 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 RateLimiter_h #define RateLimiter_h #if USE(ACCELERATED_COMPOSITING) #include "Timer.h" #include <wtf/RefCounted.h> #include <wtf/RefPtr.h> namespace WebCore { class GraphicsContext3D; class RateLimiterClient { public: virtual void rateLimit() = 0; }; // A class containing a timer, which calls rateLimitCHROMIUM on expiry class RateLimiter : public RefCounted<RateLimiter> { public: static PassRefPtr<RateLimiter> create(GraphicsContext3D*, RateLimiterClient*); ~RateLimiter(); void start(); void stop(); private: RateLimiter(GraphicsContext3D*, RateLimiterClient*); RefPtr<GraphicsContext3D> m_context; bool m_contextSupportsRateLimitingExtension; Timer<RateLimiter> m_timer; void rateLimitContext(Timer<RateLimiter>*); RateLimiterClient *m_client; }; } #endif // USE(ACCELERATED_COMPOSITING) #endif