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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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