cc/CCTextureUpdateController.h

   1 // Copyright 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CCTextureUpdateController_h
   6 #define CCTextureUpdateController_h
   7
   8 #include "CCTextureUpdateQueue.h"
   9 #include "CCTimer.h"
  10 #include <wtf/Noncopyable.h>
  11 #include <wtf/OwnPtr.h>
  12
  13 namespace WebCore {
  14
  15 class TextureCopier;
  16 class TextureUploader;
  17
  18 class CCTextureUpdateController : public CCTimerClient {
  19     WTF_MAKE_NONCOPYABLE(CCTextureUpdateController);
  20 public:
  21     static PassOwnPtr<CCTextureUpdateController> create(CCThread* thread, PassOwnPtr<CCTextureUpdateQueue> queue, CCResourceProvider* resourceProvider, TextureCopier* copier, TextureUploader* uploader)
  22     {
  23         return adoptPtr(new CCTextureUpdateController(thread, queue, resourceProvider, copier, uploader));
  24     }
  25     static size_t maxPartialTextureUpdates();
  26     static void updateTextures(CCResourceProvider*, TextureCopier*, TextureUploader*, CCTextureUpdateQueue*, size_t count);
  27
  28     virtual ~CCTextureUpdateController();
  29
  30     bool hasMoreUpdates() const;
  31     void updateMoreTextures(double monotonicTimeLimit);
  32
  33     // CCTimerClient implementation.
  34     virtual void onTimerFired() OVERRIDE;
  35
  36     // Virtual for testing.
  37     virtual double monotonicTimeNow() const;
  38     virtual double updateMoreTexturesTime() const;
  39     virtual size_t updateMoreTexturesSize() const;
  40
  41 protected:
  42     CCTextureUpdateController(CCThread*, PassOwnPtr<CCTextureUpdateQueue>, CCResourceProvider*, TextureCopier*, TextureUploader*);
  43
  44     void updateMoreTexturesIfEnoughTimeRemaining();
  45     void updateMoreTexturesNow();
  46
  47     OwnPtr<CCTimer> m_timer;
  48     OwnPtr<CCTextureUpdateQueue> m_queue;
  49     bool m_contentsTexturesPurged;
  50     CCResourceProvider* m_resourceProvider;
  51     TextureCopier* m_copier;
  52     TextureUploader* m_uploader;
  53     double m_monotonicTimeLimit;
  54     bool m_firstUpdateAttempt;
  55 };
  56
  57 }
  58
  59 #endif // CCTextureUpdateController_h