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1 /* | 1 /* |
2 * Copyright (C) 2013 Google Inc. All rights reserved. | 2 * Copyright (C) 2013 Google Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions | 5 * modification, are permitted provided that the following conditions |
6 * are met: | 6 * are met: |
7 * 1. Redistributions of source code must retain the above copyright | 7 * 1. Redistributions of source code must retain the above copyright |
8 * notice, this list of conditions and the following disclaimer. | 8 * notice, this list of conditions and the following disclaimer. |
9 * 2. Redistributions in binary form must reproduce the above copyright | 9 * 2. Redistributions in binary form must reproduce the above copyright |
10 * notice, this list of conditions and the following disclaimer in the | 10 * notice, this list of conditions and the following disclaimer in the |
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22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
24 */ | 24 */ |
25 | 25 |
26 #ifndef DiscardablePixelRef_h | 26 #ifndef DiscardablePixelRef_h |
27 #define DiscardablePixelRef_h | 27 #define DiscardablePixelRef_h |
28 | 28 |
29 #include "SkBitmap.h" | 29 #include "SkBitmap.h" |
30 #include "SkPixelRef.h" | 30 #include "SkPixelRef.h" |
31 | 31 |
| 32 #include "platform/PlatformExport.h" |
32 #include "public/platform/WebDiscardableMemory.h" | 33 #include "public/platform/WebDiscardableMemory.h" |
33 #include "wtf/OwnPtr.h" | 34 #include "wtf/OwnPtr.h" |
34 #include "wtf/PassOwnPtr.h" | 35 #include "wtf/PassOwnPtr.h" |
35 | 36 |
36 namespace WebCore { | 37 namespace WebCore { |
37 | 38 |
38 // Class for allocating the DiscardablePixelRef object. | 39 // Class for allocating the DiscardablePixelRef object. |
39 class DiscardablePixelRefAllocator : public SkBitmap::Allocator { | 40 class PLATFORM_EXPORT DiscardablePixelRefAllocator : public SkBitmap::Allocator
{ |
40 // SkBitmap::Allocator implementation. The discardable memory allocated | 41 // SkBitmap::Allocator implementation. The discardable memory allocated |
41 // after this call is locked and will not be purged until next | 42 // after this call is locked and will not be purged until next |
42 // onUnlockPixels(). | 43 // onUnlockPixels(). |
43 virtual bool allocPixelRef(SkBitmap*, SkColorTable*); | 44 virtual bool allocPixelRef(SkBitmap*, SkColorTable*); |
44 }; | 45 }; |
45 | 46 |
46 // PixelRef object whose memory can be discarded when pixels are unlocked. | 47 // PixelRef object whose memory can be discarded when pixels are unlocked. |
47 class DiscardablePixelRef : public SkPixelRef { | 48 class PLATFORM_EXPORT DiscardablePixelRef : public SkPixelRef { |
48 public: | 49 public: |
49 DiscardablePixelRef(PassOwnPtr<SkMutex>); | 50 DiscardablePixelRef(PassOwnPtr<SkMutex>); |
50 ~DiscardablePixelRef(); | 51 ~DiscardablePixelRef(); |
51 | 52 |
52 static bool isDiscardable(SkPixelRef*); | 53 static bool isDiscardable(SkPixelRef*); |
53 bool allocAndLockDiscardableMemory(size_t); | 54 bool allocAndLockDiscardableMemory(size_t); |
54 | 55 |
55 SK_DECLARE_UNFLATTENABLE_OBJECT() | 56 SK_DECLARE_UNFLATTENABLE_OBJECT() |
56 | 57 |
57 protected: | 58 protected: |
58 // SkPixelRef implementation. | 59 // SkPixelRef implementation. |
59 virtual void* onLockPixels(SkColorTable**); | 60 virtual void* onLockPixels(SkColorTable**); |
60 virtual void onUnlockPixels(); | 61 virtual void onUnlockPixels(); |
61 | 62 |
62 private: | 63 private: |
63 void* m_lockedMemory; | 64 void* m_lockedMemory; |
64 OwnPtr<blink::WebDiscardableMemory> m_discardable; | 65 OwnPtr<blink::WebDiscardableMemory> m_discardable; |
65 OwnPtr<SkMutex> m_mutex; | 66 OwnPtr<SkMutex> m_mutex; |
66 }; | 67 }; |
67 | 68 |
68 } // namespace WebCore | 69 } // namespace WebCore |
69 | 70 |
70 #endif | 71 #endif |
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