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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 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 "ui/gl/gl_image_shared_memory.h" | 5 #include "ui/gl/gl_image_shared_memory.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/process/process_handle.h" | 9 #include "base/process/process_handle.h" |
10 | 10 |
11 namespace gfx { | 11 namespace gfx { |
12 namespace { | 12 namespace { |
13 | 13 |
14 // Returns true if the size is valid and false otherwise. | 14 // Returns true if the size is valid and false otherwise. |
15 bool SizeInBytes(const gfx::Size& size, | 15 bool SizeInBytes(const gfx::Size& size, |
16 gfx::GpuMemoryBuffer::Format format, | 16 gfx::GpuMemoryBuffer::Format format, |
17 size_t* size_in_bytes) { | 17 size_t* size_in_bytes) { |
18 if (size.IsEmpty()) | 18 if (size.IsEmpty()) |
19 return false; | 19 return false; |
20 base::CheckedNumeric<size_t> s = GLImageMemory::BytesPerPixel(format); | 20 base::CheckedNumeric<size_t> s = GLImageMemory::BitsPerPixel(format); |
21 s *= size.width(); | 21 s *= size.width(); |
22 s *= size.height(); | 22 s *= size.height(); |
| 23 s /= 8; |
23 if (!s.IsValid()) | 24 if (!s.IsValid()) |
24 return false; | 25 return false; |
25 *size_in_bytes = s.ValueOrDie(); | 26 *size_in_bytes = s.ValueOrDie(); |
26 return true; | 27 return true; |
27 } | 28 } |
28 | 29 |
29 } // namespace | 30 } // namespace |
30 | 31 |
31 GLImageSharedMemory::GLImageSharedMemory(const gfx::Size& size, | 32 GLImageSharedMemory::GLImageSharedMemory(const gfx::Size& size, |
32 unsigned internalformat) | 33 unsigned internalformat) |
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72 shared_memory_ = duped_shared_memory.Pass(); | 73 shared_memory_ = duped_shared_memory.Pass(); |
73 return true; | 74 return true; |
74 } | 75 } |
75 | 76 |
76 void GLImageSharedMemory::Destroy(bool have_context) { | 77 void GLImageSharedMemory::Destroy(bool have_context) { |
77 GLImageMemory::Destroy(have_context); | 78 GLImageMemory::Destroy(have_context); |
78 shared_memory_.reset(); | 79 shared_memory_.reset(); |
79 } | 80 } |
80 | 81 |
81 } // namespace gfx | 82 } // namespace gfx |
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