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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_SHARED_BITMAP_H_ | |
6 #define CC_RESOURCES_SHARED_BITMAP_H_ | |
7 | |
8 #include "base/basictypes.h" | |
9 #include "gpu/command_buffer/common/mailbox.h" | |
10 #include "ui/gfx/geometry/size.h" | |
11 | |
12 namespace cc { | |
13 typedef gpu::Mailbox SharedBitmapId; | |
14 | |
15 class SharedBitmap { | |
16 public: | |
17 SharedBitmap(uint8* pixels, const SharedBitmapId& id); | |
18 | |
19 virtual ~SharedBitmap(); | |
20 | |
21 uint8* pixels() { return pixels_; } | |
22 | |
23 const SharedBitmapId& id() { return id_; } | |
24 | |
25 // Returns true if the size is valid and false otherwise. | |
26 static bool SizeInBytes(const gfx::Size& size, size_t* size_in_bytes); | |
27 // Dies with a CRASH() if the size can not be represented as a positive number | |
28 // of bytes. | |
29 static size_t CheckedSizeInBytes(const gfx::Size& size); | |
30 // Returns the size in bytes but may overflow or return 0. Only do this for | |
31 // sizes that have already been checked. | |
32 static size_t UncheckedSizeInBytes(const gfx::Size& size); | |
33 // Returns true if the size is valid and false otherwise. | |
34 static bool VerifySizeInBytes(const gfx::Size& size); | |
35 | |
36 static SharedBitmapId GenerateId(); | |
37 | |
38 private: | |
39 uint8* pixels_; | |
40 SharedBitmapId id_; | |
41 | |
42 DISALLOW_COPY_AND_ASSIGN(SharedBitmap); | |
43 }; | |
44 | |
45 } // namespace cc | |
46 | |
47 #endif // CC_RESOURCES_SHARED_BITMAP_H_ | |
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