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1 // Copyright 2013 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "cc/resources/shared_bitmap.h" | 5 #include "cc/resources/shared_bitmap.h" |
6 | 6 |
7 #include "base/logging.h" | 7 #include "base/logging.h" |
8 #include "base/numerics/safe_math.h" | 8 #include "base/numerics/safe_math.h" |
9 #include "base/rand_util.h" | 9 #include "base/rand_util.h" |
10 | 10 |
11 namespace cc { | 11 namespace cc { |
12 | 12 |
13 SharedBitmap::SharedBitmap( | 13 SharedBitmap::SharedBitmap( |
14 base::SharedMemory* memory, | 14 base::SharedMemory* memory, |
15 const SharedBitmapId& id, | 15 const SharedBitmapId& id, |
16 const base::Callback<void(SharedBitmap* bitmap)>& free_callback) | 16 const base::Callback<void(SharedBitmap* bitmap)>& free_callback) |
17 : memory_(memory), | 17 : memory_(memory), |
18 pixels_(static_cast<uint8*>(memory_->memory())), | 18 pixels_(static_cast<uint8*>(memory_->memory())), |
19 id_(id), | 19 id_(id), |
20 free_callback_(free_callback) { | 20 free_callback_(free_callback) { |
21 } | 21 } |
22 | 22 |
23 SharedBitmap::SharedBitmap( | 23 SharedBitmap::SharedBitmap( |
24 uint8* pixels, | 24 uint8* pixels, |
25 const SharedBitmapId& id, | 25 const SharedBitmapId& id, |
26 const base::Callback<void(SharedBitmap* bitmap)>& free_callback) | 26 const base::Callback<void(SharedBitmap* bitmap)>& free_callback) |
27 : memory_(NULL), pixels_(pixels), id_(id), free_callback_(free_callback) { | 27 : memory_(nullptr), |
| 28 pixels_(pixels), |
| 29 id_(id), |
| 30 free_callback_(free_callback) { |
28 } | 31 } |
29 | 32 |
30 SharedBitmap::~SharedBitmap() { free_callback_.Run(this); } | 33 SharedBitmap::~SharedBitmap() { free_callback_.Run(this); } |
31 | 34 |
32 // static | 35 // static |
33 bool SharedBitmap::SizeInBytes(const gfx::Size& size, size_t* size_in_bytes) { | 36 bool SharedBitmap::SizeInBytes(const gfx::Size& size, size_t* size_in_bytes) { |
34 if (size.IsEmpty()) | 37 if (size.IsEmpty()) |
35 return false; | 38 return false; |
36 base::CheckedNumeric<size_t> s = 4; | 39 base::CheckedNumeric<size_t> s = 4; |
37 s *= size.width(); | 40 s *= size.width(); |
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72 | 75 |
73 // static | 76 // static |
74 SharedBitmapId SharedBitmap::GenerateId() { | 77 SharedBitmapId SharedBitmap::GenerateId() { |
75 SharedBitmapId id; | 78 SharedBitmapId id; |
76 // Needs cryptographically-secure random numbers. | 79 // Needs cryptographically-secure random numbers. |
77 base::RandBytes(id.name, sizeof(id.name)); | 80 base::RandBytes(id.name, sizeof(id.name)); |
78 return id; | 81 return id; |
79 } | 82 } |
80 | 83 |
81 } // namespace cc | 84 } // namespace cc |
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