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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef ANDROID_WEBVIEW_BROWSER_SHARED_RENDERER_STATE_H_
#define ANDROID_WEBVIEW_BROWSER_SHARED_RENDERER_STATE_H_
#include "base/message_loop/message_loop_proxy.h"
#include "base/synchronization/lock.h"
#include "cc/output/compositor_frame.h"
#include "cc/output/compositor_frame_ack.h"
#include "content/public/browser/android/synchronous_compositor.h"
#include "ui/gfx/geometry/rect.h"
#include "ui/gfx/geometry/vector2d.h"
namespace cc {
class CompositorFrameAck;
}
namespace gpu {
class GLInProcessContext;
}
namespace android_webview {
class BrowserViewRendererClient;
// Set by BrowserViewRenderer and read by HardwareRenderer.
struct DrawGLInput {
gfx::Rect global_visible_rect;
gfx::Vector2d scroll_offset;
int width;
int height;
cc::CompositorFrame frame;
DrawGLInput();
~DrawGLInput();
};
// Set by HardwareRenderer and read by BrowserViewRenderer.
struct DrawGLResult {
bool clip_contains_visible_rect;
DrawGLResult();
};
// This class holds renderer state that is shared between UI and RT threads.
// Android framework will block the UI thread when RT is drawing, so no locking
// is needed in this class. In the interim, this class is also responsible for
// thread hopping that should eventually be removed once RT support work is
// complete.
class SharedRendererState {
public:
SharedRendererState(scoped_refptr<base::MessageLoopProxy> ui_loop,
BrowserViewRendererClient* client);
~SharedRendererState();
void ClientRequestDrawGL();
// This function should only be called on UI thread.
void SetCompositorOnUiThread(content::SynchronousCompositor* compositor);
// This function can be called on both UI and RT thread.
content::SynchronousCompositor* GetCompositor();
void SetMemoryPolicy(const content::SynchronousCompositorMemoryPolicy policy);
content::SynchronousCompositorMemoryPolicy GetMemoryPolicy() const;
void SetMemoryPolicyDirty(bool is_dirty);
bool IsMemoryPolicyDirty() const;
void SetDrawGLInput(scoped_ptr<DrawGLInput> input);
scoped_ptr<DrawGLInput> PassDrawGLInput();
// Set by UI and read by RT.
void SetHardwareAllowed(bool allowed);
bool IsHardwareAllowed() const;
// Set by RT and read by UI.
void SetHardwareInitialized(bool initialized);
bool IsHardwareInitialized() const;
void SetSharedContext(gpu::GLInProcessContext* context);
gpu::GLInProcessContext* GetSharedContext() const;
void ReturnResources(const cc::TransferableResourceArray& input);
void InsertReturnedResources(const cc::ReturnedResourceArray& resources);
void SwapReturnedResources(cc::ReturnedResourceArray* resources);
bool ReturnedResourcesEmpty() const;
private:
void ClientRequestDrawGLOnUIThread();
scoped_refptr<base::MessageLoopProxy> ui_loop_;
// TODO(boliu): Remove |client_on_ui_| from shared state.
BrowserViewRendererClient* client_on_ui_;
base::WeakPtrFactory<SharedRendererState> weak_factory_on_ui_thread_;
base::WeakPtr<SharedRendererState> ui_thread_weak_ptr_;
// Accessed by both UI and RT thread.
mutable base::Lock lock_;
content::SynchronousCompositor* compositor_;
content::SynchronousCompositorMemoryPolicy memory_policy_;
// Set to true when SetMemoryPolicy called with a different memory policy.
// Set to false when memory policy is read and enforced to compositor.
bool memory_policy_dirty_;
scoped_ptr<DrawGLInput> draw_gl_input_;
bool hardware_allowed_;
bool hardware_initialized_;
gpu::GLInProcessContext* share_context_;
cc::ReturnedResourceArray returned_resources_;
};
} // namespace android_webview
#endif // ANDROID_WEBVIEW_BROWSER_SHARED_RENDERER_STATE_H_
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