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1 // Copyright 2016 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 SkiaTextureHolder_h | |
6 #define SkiaTextureHolder_h | |
7 | |
8 #include "platform/PlatformExport.h" | |
9 #include "platform/graphics/TextureHolder.h" | |
10 | |
11 namespace blink { | |
12 | |
13 class PLATFORM_EXPORT SkiaTextureHolder final : public TextureHolder { | |
14 public: | |
15 ~SkiaTextureHolder() override; | |
16 | |
17 bool isSkiaTextureHolder() final { return true; } | |
18 bool isMailboxTextureHolder() final { return false; } | |
19 unsigned sharedContextId() final; | |
20 IntSize size() const final { | |
21 return IntSize(m_image->width(), m_image->height()); | |
22 } | |
23 bool currentFrameKnownToBeOpaque(Image::MetadataMode) final { | |
24 return m_image->isOpaque(); | |
25 } | |
26 WebTaskRunner* imageThreadTaskRunner() final { | |
27 return m_imageThreadTaskRunner.get(); | |
28 } | |
29 | |
30 sk_sp<SkImage> skImage() final { return m_image; } | |
31 void setSharedContextId(unsigned contextId) final { | |
32 m_sharedContextId = contextId; | |
33 } | |
34 void setImageThreadTaskRunner( | |
35 std::unique_ptr<WebTaskRunner> taskRunner) final { | |
36 m_imageThreadTaskRunner = std::move(taskRunner); | |
37 } | |
38 | |
39 // When creating a AcceleratedStaticBitmap from a texture-backed SkImage, this | |
40 // function will be called to create a TextureHolder object. | |
41 SkiaTextureHolder(sk_sp<SkImage>); | |
42 // This function consumes the mailbox in the input parameter and turn it into | |
43 // a texture-backed SkImage. | |
44 SkiaTextureHolder(std::unique_ptr<TextureHolder>); | |
45 | |
46 private: | |
47 void releaseImageThreadSafe(); | |
48 | |
49 // The m_image should always be texture-backed | |
50 sk_sp<SkImage> m_image; | |
51 // Id of the shared context where m_image was created | |
52 unsigned m_sharedContextId = 0; | |
53 // Thread that |m_image| belongs to. Set to null when |m_image| belongs to the | |
54 // same thread as the AcceleratedStaticBitmapImage. Should only be non-null | |
55 // after a transfer. | |
56 std::unique_ptr<WebTaskRunner> m_imageThreadTaskRunner; | |
xidachen
2016/11/04 02:23:35
haraken@: yes, we are keeping a clone of the taskR
| |
57 }; | |
58 | |
59 } // namespace blink | |
60 | |
61 #endif // SkiaTextureHolder_h | |
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