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1 // Copyright 2013 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 CC_RESOURCES_UI_RESOURCE_BITMAP_H_ | |
6 #define CC_RESOURCES_UI_RESOURCE_BITMAP_H_ | |
7 | |
8 #include "base/memory/ref_counted.h" | |
9 #include "base/memory/scoped_ptr.h" | |
10 #include "cc/base/cc_export.h" | |
11 #include "skia/ext/refptr.h" | |
12 #include "third_party/skia/include/core/SkPixelRef.h" | |
13 #include "ui/gfx/geometry/size.h" | |
14 | |
15 class SkBitmap; | |
16 | |
17 namespace cc { | |
18 | |
19 class ETC1PixelRef; | |
20 | |
21 // A bitmap class that contains a ref-counted reference to a SkPixelRef that | |
22 // holds the content of the bitmap (cannot use SkBitmap because of ETC1). | |
23 // Thread-safety (by ways of SkPixelRef) ensures that both main and impl threads | |
24 // can hold references to the bitmap and that asynchronous uploads are allowed. | |
25 class CC_EXPORT UIResourceBitmap { | |
26 public: | |
27 enum UIResourceFormat { | |
28 RGBA8, | |
29 ALPHA_8, | |
30 ETC1 | |
31 }; | |
32 enum UIResourceWrapMode { | |
33 CLAMP_TO_EDGE, | |
34 REPEAT | |
35 }; | |
36 | |
37 gfx::Size GetSize() const { return size_; } | |
38 UIResourceFormat GetFormat() const { return format_; } | |
39 UIResourceWrapMode GetWrapMode() const { return wrap_mode_; } | |
40 void SetWrapMode(UIResourceWrapMode wrap_mode) { wrap_mode_ = wrap_mode; } | |
41 bool GetOpaque() const { return opaque_; } | |
42 void SetOpaque(bool opaque) { opaque_ = opaque; } | |
43 | |
44 // User must ensure that |skbitmap| is immutable. The SkBitmap Format should | |
45 // be 32-bit RGBA or 8-bit ALPHA. | |
46 explicit UIResourceBitmap(const SkBitmap& skbitmap); | |
47 UIResourceBitmap(const gfx::Size& size, bool is_opaque); | |
48 UIResourceBitmap(const skia::RefPtr<SkPixelRef>& pixel_ref, | |
49 const gfx::Size& size); | |
50 ~UIResourceBitmap(); | |
51 | |
52 private: | |
53 friend class AutoLockUIResourceBitmap; | |
54 | |
55 void Create(const skia::RefPtr<SkPixelRef>& pixel_ref, | |
56 const gfx::Size& size, | |
57 UIResourceFormat format); | |
58 | |
59 skia::RefPtr<SkPixelRef> pixel_ref_; | |
60 UIResourceFormat format_; | |
61 UIResourceWrapMode wrap_mode_; | |
62 gfx::Size size_; | |
63 bool opaque_; | |
64 }; | |
65 | |
66 class CC_EXPORT AutoLockUIResourceBitmap { | |
67 public: | |
68 explicit AutoLockUIResourceBitmap(const UIResourceBitmap& bitmap); | |
69 ~AutoLockUIResourceBitmap(); | |
70 const uint8_t* GetPixels() const; | |
71 | |
72 private: | |
73 const UIResourceBitmap& bitmap_; | |
74 }; | |
75 | |
76 } // namespace cc | |
77 | |
78 #endif // CC_RESOURCES_UI_RESOURCE_BITMAP_H_ | |
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