1 files changed, 140 insertions, 0 deletions
diff --git a/chromium/content/browser/compositor/reflector_impl.h b/chromium/content/browser/compositor/reflector_impl.h
new file mode 100644
index 00000000000..0a9af98ca61
--- /dev/null
+++ b/chromium/content/browser/compositor/reflector_impl.h
@@ -0,0 +1,140 @@
+// 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 CONTENT_BROWSER_COMPOSITOR_REFLECTOR_IMPL_H_
+#define CONTENT_BROWSER_COMPOSITOR_REFLECTOR_IMPL_H_
+
+#include "base/id_map.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/memory/weak_ptr.h"
+#include "base/synchronization/lock.h"
+#include "content/browser/compositor/image_transport_factory.h"
+#include "gpu/command_buffer/common/mailbox_holder.h"
+#include "ui/compositor/reflector.h"
+#include "ui/gfx/size.h"
+
+namespace base { class MessageLoopProxy; }
+
+namespace gfx { class Rect; }
+
+namespace ui {
+class Compositor;
+class Layer;
+}
+
+namespace content {
+
+class OwnedMailbox;
+class BrowserCompositorOutputSurface;
+
+// A reflector implementation that copies the framebuffer content
+// to the texture, then draw it onto the mirroring compositor.
+class ReflectorImpl : public base::SupportsWeakPtr<ReflectorImpl>,
+                      public ui::Reflector {
+ public:
+  ReflectorImpl(
+      ui::Compositor* mirrored_compositor,
+      ui::Layer* mirroring_layer,
+      IDMap<BrowserCompositorOutputSurface>* output_surface_map,
+      base::MessageLoopProxy* compositor_thread_loop,
+      int surface_id);
+
+  ui::Compositor* mirrored_compositor() {
+    return GetMain().mirrored_compositor;
+  }
+
+  void InitOnImplThread(const gpu::MailboxHolder& mailbox_holder);
+  void Shutdown();
+  void ShutdownOnImplThread();
+
+  // Post a task to attach the reflector to the output surface onto ImplThread.
+  void ReattachToOutputSurfaceFromMainThread(
+      BrowserCompositorOutputSurface* surface);
+
+  // ui::Reflector implementation.
+  virtual void OnMirroringCompositorResized() OVERRIDE;
+
+  // Called in |BrowserCompositorOutputSurface::SwapBuffers| to copy
+  // the full screen image to the |texture_id_|. This must be called
+  // on ImplThread.
+  void OnSwapBuffers();
+
+  // Called in |BrowserCompositorOutputSurface::PostSubBuffer| copy
+  // the sub image given by |rect| to the texture.This must be called
+  // on ImplThread.
+  void OnPostSubBuffer(gfx::Rect rect);
+
+  // Create a shared texture that will be used to copy the content of
+  // mirrored compositor to the mirroring compositor.  This should
+  // be posted to the main thread when the output is attached in
+  // impl thread.
+  void CreateSharedTextureOnMainThread(gfx::Size size);
+
+  // Called when the source surface is bound and available. This must
+  // be called on ImplThread.
+  void OnSourceSurfaceReady(BrowserCompositorOutputSurface* surface);
+
+  void DetachFromOutputSurface();
+
+ private:
+  struct MainThreadData {
+    MainThreadData(ui::Compositor* mirrored_compositor,
+                   ui::Layer* mirroring_layer);
+    ~MainThreadData();
+    scoped_refptr<OwnedMailbox> mailbox;
+    bool needs_set_mailbox;
+    ui::Compositor* mirrored_compositor;
+    ui::Layer* mirroring_layer;
+  };
+
+  struct ImplThreadData {
+    explicit ImplThreadData(
+        IDMap<BrowserCompositorOutputSurface>* output_surface_map);
+    ~ImplThreadData();
+    IDMap<BrowserCompositorOutputSurface>* output_surface_map;
+    BrowserCompositorOutputSurface* output_surface;
+    scoped_ptr<GLHelper> gl_helper;
+    unsigned texture_id;
+    gpu::MailboxHolder mailbox_holder;
+  };
+
+  virtual ~ReflectorImpl();
+
+  void AttachToOutputSurfaceOnImplThread(
+      const gpu::MailboxHolder& mailbox_holder,
+      BrowserCompositorOutputSurface* surface);
+
+  void UpdateTextureSizeOnMainThread(gfx::Size size);
+
+  // Request full redraw on mirroring compositor.
+  void FullRedrawOnMainThread(gfx::Size size);
+
+  void UpdateSubBufferOnMainThread(gfx::Size size, gfx::Rect rect);
+
+  // Request full redraw on mirrored compositor so that
+  // the full content will be copied to mirroring compositor.
+  void FullRedrawContentOnMainThread();
+
+  // This exists just to hold a reference to a ReflectorImpl in a post task,
+  // so the ReflectorImpl gets deleted when the function returns.
+  static void DeleteOnMainThread(scoped_refptr<ReflectorImpl> reflector) {}
+
+  MainThreadData& GetMain();
+  ImplThreadData& GetImpl();
+
+  // Must be accessed only on ImplThread, through GetImpl().
+  ImplThreadData impl_unsafe_;
+
+  // Must be accessed only on MainThread, through GetMain().
+  MainThreadData main_unsafe_;
+
+  // Can be accessed on both.
+  scoped_refptr<base::MessageLoopProxy> impl_message_loop_;
+  scoped_refptr<base::MessageLoopProxy> main_message_loop_;
+  int surface_id_;
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_COMPOSITOR_REFLECTOR_IMPL_H_