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| 1 /* | |
| 2 * Copyright (C) 2013 Google Inc. All rights reserved. | |
| 3 * | |
| 4 * Redistribution and use in source and binary forms, with or without | |
| 5 * modification, are permitted provided that the following conditions | |
| 6 * are met: | |
| 7 * 1. Redistributions of source code must retain the above copyright | |
| 8 * notice, this list of conditions and the following disclaimer. | |
| 9 * 2. Redistributions in binary form must reproduce the above copyright | |
| 10 * notice, this list of conditions and the following disclaimer in the | |
| 11 * documentation and/or other materials provided with the distribution. | |
| 12 * | |
| 13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY | |
| 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
| 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR | |
| 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
| 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
| 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
| 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY | |
| 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 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. | |
| 24 */ | |
| 25 | |
| 26 #ifndef DiscardablePixelRef_h | |
| 27 #define DiscardablePixelRef_h | |
| 28 | |
| 29 #include "SkBitmap.h" | |
| 30 #include "SkPixelRef.h" | |
| 31 | |
| 32 #include "platform/PlatformExport.h" | |
| 33 #include "public/platform/WebDiscardableMemory.h" | |
| 34 #include "wtf/OwnPtr.h" | |
| 35 #include "wtf/PassOwnPtr.h" | |
| 36 | |
| 37 namespace blink { | |
| 38 | |
| 39 // Class for allocating the DiscardablePixelRef object. | |
| 40 class PLATFORM_EXPORT DiscardablePixelRefAllocator : public SkBitmap::Allocator
{ | |
| 41 // SkBitmap::Allocator implementation. The discardable memory allocated | |
| 42 // after this call is locked and will not be purged until next | |
| 43 // onUnlockPixels(). | |
| 44 virtual bool allocPixelRef(SkBitmap*, SkColorTable*) OVERRIDE; | |
| 45 }; | |
| 46 | |
| 47 // PixelRef object whose memory can be discarded when pixels are unlocked. | |
| 48 class PLATFORM_EXPORT DiscardablePixelRef : public SkPixelRef { | |
| 49 public: | |
| 50 DiscardablePixelRef(const SkImageInfo&, size_t rowBytes, PassOwnPtr<SkMutex>
); | |
| 51 virtual ~DiscardablePixelRef(); | |
| 52 | |
| 53 static bool isDiscardable(SkPixelRef*); | |
| 54 bool allocAndLockDiscardableMemory(size_t); | |
| 55 | |
| 56 protected: | |
| 57 // SkPixelRef implementation. | |
| 58 virtual bool onNewLockPixels(LockRec*) OVERRIDE; | |
| 59 virtual void onUnlockPixels() OVERRIDE; | |
| 60 | |
| 61 private: | |
| 62 void* m_lockedMemory; | |
| 63 OwnPtr<WebDiscardableMemory> m_discardable; | |
| 64 OwnPtr<SkMutex> m_mutex; | |
| 65 size_t m_rowBytes; | |
| 66 }; | |
| 67 | |
| 68 } // namespace blink | |
| 69 | |
| 70 #endif | |
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Chromium Code Reviews
Issue 485833005:
Image decoding: Remove deprecated image caching code (Closed)
Base URL: svn://svn.chromium.org/blink/trunk