Texture provider to feed data to the impl side thread for webview compositing.

content/renderer/browser_plugin/browser_plugin_texture_provider.h

+// Copyright (c) 2012 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_RENDERER_BROWSER_PLUGIN_BROWSER_PLUGIN_TEXTURE_PROVIDER_H_
+#define  CONTENT_RENDERER_BROWSER_PLUGIN_BROWSER_PLUGIN_TEXTURE_PROVIDER_H_
+
+#include "base/memory/scoped_ptr.h"
+#include "base/synchronization/lock.h"
+#include "content/common/content_export.h"
+#include "content/renderer/browser_plugin/browser_plugin_compositing_filter.h"
+#include "third_party/WebKit/Source/Platform/chromium/public/WebExternalTextureProvider.h"
+#include "third_party/WebKit/Source/Platform/chromium/public/WebFloatRect.h"
+#include "ui/gfx/size.h"
+
+struct BrowserPluginMsg_UpdateRect_Params;
+
+class RenderViewImpl;
+
+namespace base {
+class MessageLoopProxy;
+}
+
+namespace content {
+
+class CONTENT_EXPORT BrowserPluginTextureProvider
+    : public WebKit::WebExternalTextureProvider,
+      public IPC::Sender {
+ public:
+  BrowserPluginTextureProvider(
+      int instance_id,
+      int routing_id,
+      IPC::ChannelProxy* channel_proxy,
+      scoped_refptr<base::MessageLoopProxy> message_loop);
+  void Initialize();
+
+  // WebExternalTextureProvider implementation
+  virtual void setTextureProviderClient(Client*);
+
+  // IPC::Sender implementation
+  virtual bool Send(IPC::Message* message) OVERRIDE;
+
+  virtual ~BrowserPluginTextureProvider();
+
+  void OnMessageReceived(const IPC::Message& message);
+  void OnBuffersSwapped(int instance_id,
+                        uint64 surface_id,
+                        int route_id,
+                        int gpu_host_id);
+  void OnSurfaceResize(int instance_id, const gfx::Size& size);
+
+  virtual void Destroy();
+ protected:
+  virtual void SetUpFilter();
+  virtual void RemoveFilter();
+  virtual bool IsOnCorrectThread();
+
+  void DestroyImpl();
+
+  WebExternalTextureProvider::Client* client_;
+  scoped_refptr<BrowserPluginCompositingFilter> filter_;
+  int instance_id_;
+
+  scoped_refptr<base::MessageLoopProxy> impl_loop_;
+
+  // The IPC channel used by the renderer to communicate with the host.
+  IPC::ChannelProxy* channel_proxy_;
+
+  int host_routing_id_;
+
+  gfx::Size texture_size_;
+
+  bool pending_swap_buffers_;
+  uint64 pending_swap_buffers_surface_handle_;
+  int pending_swap_buffers_route_id_;
+  int pending_swap_buffers_gpu_host_id_;
+};
+
+}  // namespace content
+
+#endif  // CONTENT_RENDERER_BROWSER_PLUGIN_BROWSER_PLUGIN_TEXTURE_PROVIDER_H_