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/*
* Copyright (C) 2014 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.
*/
#ifndef ThreadedCompositor_h
#define ThreadedCompositor_h
#if USE(COORDINATED_GRAPHICS_THREADED)
#include "CoordinatedGraphicsScene.h"
#include "SimpleViewportController.h"
#include <WebCore/GLContext.h>
#include <WebCore/IntSize.h>
#include <WebCore/TransformationMatrix.h>
#include <wtf/Condition.h>
#include <wtf/FastMalloc.h>
#include <wtf/Noncopyable.h>
#include <wtf/ThreadSafeRefCounted.h>
#include <wtf/Threading.h>
namespace WebCore {
struct CoordinatedGraphicsState;
}
namespace WebKit {
class CoordinatedGraphicsScene;
class CoordinatedGraphicsSceneClient;
class CompositingRunLoop;
class ThreadedCompositor : public SimpleViewportController::Client, public CoordinatedGraphicsSceneClient, public ThreadSafeRefCounted<ThreadedCompositor> {
WTF_MAKE_NONCOPYABLE(ThreadedCompositor);
WTF_MAKE_FAST_ALLOCATED;
public:
class Client {
public:
virtual void setVisibleContentsRect(const WebCore::FloatRect&, const WebCore::FloatPoint&, float) = 0;
virtual void purgeBackingStores() = 0;
virtual void renderNextFrame() = 0;
virtual void commitScrollOffset(uint32_t layerID, const WebCore::IntSize& offset) = 0;
};
static Ref<ThreadedCompositor> create(Client*);
virtual ~ThreadedCompositor();
void setNeedsDisplay();
void setNativeSurfaceHandleForCompositing(uint64_t);
void setDeviceScaleFactor(float);
void updateSceneState(const WebCore::CoordinatedGraphicsState&);
void didChangeViewportSize(const WebCore::IntSize&);
void didChangeViewportAttribute(const WebCore::ViewportAttributes&);
void didChangeContentsSize(const WebCore::IntSize&);
void scrollTo(const WebCore::IntPoint&);
void scrollBy(const WebCore::IntSize&);
private:
ThreadedCompositor(Client*);
// CoordinatedGraphicsSceneClient
virtual void purgeBackingStores() override;
virtual void renderNextFrame() override;
virtual void updateViewport() override;
virtual void commitScrollOffset(uint32_t layerID, const WebCore::IntSize& offset) override;
void renderLayerTree();
void scheduleDisplayImmediately();
virtual void didChangeVisibleRect() override;
bool ensureGLContext();
WebCore::GLContext* glContext();
SimpleViewportController* viewportController() { return m_viewportController.get(); }
void callOnCompositingThread(std::function<void()>);
void createCompositingThread();
void runCompositingThread();
void terminateCompositingThread();
static void compositingThreadEntry(void*);
Client* m_client;
RefPtr<CoordinatedGraphicsScene> m_scene;
std::unique_ptr<SimpleViewportController> m_viewportController;
std::unique_ptr<WebCore::GLContext> m_context;
WebCore::IntSize m_viewportSize;
float m_deviceScaleFactor;
uint64_t m_nativeSurfaceHandle;
std::unique_ptr<CompositingRunLoop> m_compositingRunLoop;
ThreadIdentifier m_threadIdentifier;
Condition m_initializeRunLoopCondition;
Lock m_initializeRunLoopConditionMutex;
Condition m_terminateRunLoopCondition;
Lock m_terminateRunLoopConditionMutex;
};
} // namespace WebKit
#endif
#endif // ThreadedCompositor_h
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