Bitmap transport

chrome/browser/renderer_host/browser_render_process_host.h

 // Copyright (c) 2006-2008 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 CHROME_BROWSER_RENDERER_HOST_BROWSER_RENDER_PROCESS_HOST_H_
 #define CHROME_BROWSER_RENDERER_HOST_BROWSER_RENDER_PROCESS_HOST_H_
 
 #include "build/build_config.h"
 
 #include <string>
 
 #include "base/process.h"
 #include "base/ref_counted.h"
 #include "base/scoped_ptr.h"
 #include "base/shared_memory.h"
+#include "base/timer.h"
+#include "chrome/common/transport_dib.h"
 #include "chrome/browser/renderer_host/audio_renderer_host.h"
 #include "chrome/browser/renderer_host/render_process_host.h"
 #include "chrome/common/notification_observer.h"
 #include "webkit/glue/cache_manager.h"
 
 class CommandLine;
 class GURL;
 class PrefService;
 class RenderWidgetHelper;
 class WebContents;
@@ skipping 29 matching lines @@
   virtual void CrossSiteClosePageACK(int new_render_process_host_id,
                                      int new_request_id);
   virtual bool WaitForPaintMsg(int render_widget_id,
                                const base::TimeDelta& max_delay,
                                IPC::Message* msg);
   virtual void ReceivedBadMessage(uint16 msg_type);
   virtual void WidgetRestored();
   virtual void WidgetHidden();
   virtual void AddWord(const std::wstring& word);
   virtual bool FastShutdownIfPossible();
+  virtual TransportDIB* GetTransportDIB(TransportDIB::Id dib_id);
 
   // IPC::Channel::Sender via RenderProcessHost.
   virtual bool Send(IPC::Message* msg);
 
   // IPC::Channel::Listener via RenderProcessHost.
   virtual void OnMessageReceived(const IPC::Message& msg);
   virtual void OnChannelConnected(int32 peer_pid);
   virtual void OnChannelError();
 
   static void RegisterPrefs(PrefService* prefs);
@@ skipping 17 matching lines @@
   void OnPageContents(const GURL& url, int32 page_id,
                       const std::wstring& contents);
   // Clipboard messages
   void OnClipboardWriteHTML(const std::wstring& markup, const GURL& src_url);
   void OnClipboardWriteBookmark(const std::wstring& title, const GURL& url);
   void OnClipboardWriteBitmap(base::SharedMemoryHandle bitmap, gfx::Size size);
   void OnClipboardIsFormatAvailable(unsigned int format, bool* result);
   void OnClipboardReadText(std::wstring* result);
   void OnClipboardReadAsciiText(std::string* result);
   void OnClipboardReadHTML(std::wstring* markup, GURL* src_url);
+
   void OnUpdatedCacheStats(const CacheManager::UsageStats& stats);
 
   // Initialize support for visited links. Send the renderer process its initial
   // set of visited links.
   void InitVisitedLinks();
 
   // Initialize support for user scripts. Send the renderer process its initial
   // set of scripts and listen for updates to scripts.
   void InitUserScripts();
 
@@ skipping 21 matching lines @@
   // Does this process have backgrounded priority.
   bool backgrounded_;
 
   // Used to allow a RenderWidgetHost to intercept various messages on the
   // IO thread.
   scoped_refptr<RenderWidgetHelper> widget_helper_;
 
   // The host of audio renderers in the renderer process.
   scoped_refptr<AudioRendererHost> audio_renderer_host_;
 
+  // A map of transport DIB ids to cached TransportDIBs
+  std::map<TransportDIB::Id, TransportDIB*> cached_dibs_;
+  enum {
+    // This is the maximum size of |cached_dibs_|
+    MAX_MAPPED_TRANSPORT_DIBS = 3,
+  };
+
+  // Map a transport DIB from its Id and return it. Returns NULL on error.
+  TransportDIB* MapTransportDIB(TransportDIB::Id dib_id);
+
+  void ClearTransportDIBCache();
+  // This is used to clear our cache five seconds after the last use.
+  base::DelayTimer<BrowserRenderProcessHost> cached_dibs_cleaner_;
+
   DISALLOW_COPY_AND_ASSIGN(BrowserRenderProcessHost);
 };
 
 #endif  // CHROME_BROWSER_RENDERER_HOST_BROWSER_RENDER_PROCESS_HOST_H_