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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 "base/basictypes.h" | |
9 #include "base/memory/scoped_ptr.h" | |
10 #include "base/time.h" | |
11 #include "cc/texture_update_queue.h" | |
12 #include "cc/timer.h" | |
13 | |
14 namespace cc { | |
15 | |
16 class ResourceProvider; | |
17 | |
18 class TextureUpdateControllerClient { | |
19 public: | |
20 virtual void readyToFinalizeTextureUpdates() = 0; | |
21 | |
22 protected: | |
23 virtual ~TextureUpdateControllerClient() { } | |
24 }; | |
25 | |
26 class TextureUpdateController : public TimerClient { | |
27 public: | |
28 static scoped_ptr<TextureUpdateController> create(TextureUpdateControllerCli
ent* client, Thread* thread, scoped_ptr<TextureUpdateQueue> queue, ResourceProvi
der* resourceProvider) | |
29 { | |
30 return make_scoped_ptr(new TextureUpdateController(client, thread, queue
.Pass(), resourceProvider)); | |
31 } | |
32 static size_t maxPartialTextureUpdates(); | |
33 | |
34 virtual ~TextureUpdateController(); | |
35 | |
36 // Discard uploads to textures that were evicted on the impl thread. | |
37 void discardUploadsToEvictedResources(); | |
38 | |
39 void performMoreUpdates(base::TimeTicks timeLimit); | |
40 void finalize(); | |
41 | |
42 // TimerClient implementation. | |
43 virtual void onTimerFired() OVERRIDE; | |
44 | |
45 // Virtual for testing. | |
46 virtual base::TimeTicks now() const; | |
47 virtual base::TimeDelta updateMoreTexturesTime() const; | |
48 virtual size_t updateMoreTexturesSize() const; | |
49 | |
50 protected: | |
51 TextureUpdateController(TextureUpdateControllerClient*, Thread*, scoped_ptr<
TextureUpdateQueue>, ResourceProvider*); | |
52 | |
53 static size_t maxFullUpdatesPerTick(ResourceProvider*); | |
54 | |
55 size_t maxBlockingUpdates() const; | |
56 | |
57 void updateTexture(ResourceUpdate); | |
58 | |
59 // This returns true when there were textures left to update. | |
60 bool updateMoreTexturesIfEnoughTimeRemaining(); | |
61 void updateMoreTexturesNow(); | |
62 | |
63 TextureUpdateControllerClient* m_client; | |
64 scoped_ptr<Timer> m_timer; | |
65 scoped_ptr<TextureUpdateQueue> m_queue; | |
66 bool m_contentsTexturesPurged; | |
67 ResourceProvider* m_resourceProvider; | |
68 base::TimeTicks m_timeLimit; | |
69 size_t m_textureUpdatesPerTick; | |
70 bool m_firstUpdateAttempt; | |
71 | |
72 private: | |
73 DISALLOW_COPY_AND_ASSIGN(TextureUpdateController); | |
74 }; | |
75 | |
76 } // namespace cc | |
77 | |
78 #endif // CCTextureUpdateController_h | |
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