| /* |
| * Copyright (C) 2015 Igalia S.L. |
| * |
| * 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 INC. 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 INC. 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. |
| */ |
| |
| #pragma once |
| |
| #if USE(COORDINATED_GRAPHICS) |
| |
| #include "TextureMapperGLHeaders.h" |
| #include <wtf/Condition.h> |
| #include <wtf/Function.h> |
| #include <wtf/Lock.h> |
| #include <wtf/RunLoop.h> |
| #include <wtf/ThreadSafeRefCounted.h> |
| #include <wtf/Vector.h> |
| |
| #ifndef NDEBUG |
| #include <wtf/Threading.h> |
| #endif |
| |
| namespace WebCore { |
| |
| class IntSize; |
| class TextureMapperGL; |
| class TextureMapperLayer; |
| class TextureMapperPlatformLayerBuffer; |
| |
| class TextureMapperPlatformLayerProxy : public ThreadSafeRefCounted<TextureMapperPlatformLayerProxy> { |
| WTF_MAKE_FAST_ALLOCATED(); |
| public: |
| class Compositor { |
| public: |
| virtual void onNewBufferAvailable() = 0; |
| }; |
| |
| TextureMapperPlatformLayerProxy(); |
| virtual ~TextureMapperPlatformLayerProxy(); |
| |
| // To avoid multiple lock/release situation to update a single frame, |
| // the implementation of TextureMapperPlatformLayerProxyProvider should |
| // aquire / release the lock explicitly to use below methods. |
| Lock& lock() { return m_lock; } |
| std::unique_ptr<TextureMapperPlatformLayerBuffer> getAvailableBuffer(const IntSize&, GLint internalFormat); |
| void pushNextBuffer(std::unique_ptr<TextureMapperPlatformLayerBuffer>); |
| bool isActive(); |
| |
| WEBCORE_EXPORT void activateOnCompositingThread(Compositor*, TextureMapperLayer*); |
| WEBCORE_EXPORT void invalidate(); |
| |
| WEBCORE_EXPORT void swapBuffer(); |
| void dropCurrentBufferWhilePreservingTexture(bool shouldWait = false); |
| |
| bool scheduleUpdateOnCompositorThread(Function<void()>&&); |
| |
| private: |
| void appendToUnusedBuffers(std::unique_ptr<TextureMapperPlatformLayerBuffer>); |
| void scheduleReleaseUnusedBuffers(); |
| void releaseUnusedBuffersTimerFired(); |
| |
| Compositor* m_compositor; |
| TextureMapperLayer* m_targetLayer; |
| |
| std::unique_ptr<TextureMapperPlatformLayerBuffer> m_currentBuffer; |
| std::unique_ptr<TextureMapperPlatformLayerBuffer> m_pendingBuffer; |
| |
| Lock m_lock; |
| |
| Lock m_wasBufferDroppedLock; |
| Condition m_wasBufferDroppedCondition; |
| bool m_wasBufferDropped { false }; |
| |
| Vector<std::unique_ptr<TextureMapperPlatformLayerBuffer>> m_usedBuffers; |
| std::unique_ptr<RunLoop::Timer<TextureMapperPlatformLayerProxy>> m_releaseUnusedBuffersTimer; |
| |
| #ifndef NDEBUG |
| RefPtr<Thread> m_compositorThread; |
| #endif |
| |
| void compositorThreadUpdateTimerFired(); |
| std::unique_ptr<RunLoop::Timer<TextureMapperPlatformLayerProxy>> m_compositorThreadUpdateTimer; |
| Function<void()> m_compositorThreadUpdateFunction; |
| }; |
| |
| } // namespace WebCore |
| |
| #endif // USE(COORDINATED_GRAPHICS) |