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1 // Copyright 2015 The Chromium Authors. All rights reserved. | 1 // Copyright 2015 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 "media/cdm/simple_cdm_buffer.h" | 5 #include "media/cdm/simple_cdm_buffer.h" |
6 | 6 |
7 #include <limits> | |
8 | |
7 #include "base/logging.h" | 9 #include "base/logging.h" |
10 #include "base/numerics/safe_conversions.h" | |
8 | 11 |
9 namespace media { | 12 namespace media { |
10 | 13 |
11 // static | 14 // static |
12 SimpleCdmBuffer* SimpleCdmBuffer::Create(uint32_t capacity) { | 15 SimpleCdmBuffer* SimpleCdmBuffer::Create(size_t capacity) { |
13 DCHECK(capacity); | 16 DCHECK(capacity); |
14 return new SimpleCdmBuffer(capacity); | 17 |
18 // cdm::Buffer interface limits capacity to uint32. Requests bigger than | |
19 // uint32_max will fail. | |
20 if (capacity > static_cast<size_t>(std::numeric_limits<uint32_t>::max())) | |
21 return nullptr; | |
xhwang
2016/03/15 06:17:22
This should really never happen since the caller o
jrummell
2016/03/15 18:49:42
Done.
| |
22 | |
23 return new SimpleCdmBuffer(base::checked_cast<uint32_t>(capacity)); | |
15 } | 24 } |
16 | 25 |
17 SimpleCdmBuffer::SimpleCdmBuffer(uint32_t capacity) | 26 SimpleCdmBuffer::SimpleCdmBuffer(uint32_t capacity) |
18 : buffer_(capacity), size_(0) {} | 27 : buffer_(capacity), size_(0) {} |
19 | 28 |
20 SimpleCdmBuffer::~SimpleCdmBuffer() {} | 29 SimpleCdmBuffer::~SimpleCdmBuffer() {} |
21 | 30 |
22 void SimpleCdmBuffer::Destroy() { | 31 void SimpleCdmBuffer::Destroy() { |
23 delete this; | 32 delete this; |
24 } | 33 } |
25 | 34 |
26 uint32_t SimpleCdmBuffer::Capacity() const { | 35 uint32_t SimpleCdmBuffer::Capacity() const { |
27 return buffer_.size(); | 36 return buffer_.size(); |
28 } | 37 } |
29 | 38 |
30 uint8_t* SimpleCdmBuffer::Data() { | 39 uint8_t* SimpleCdmBuffer::Data() { |
31 return buffer_.data(); | 40 return buffer_.data(); |
32 } | 41 } |
33 | 42 |
34 void SimpleCdmBuffer::SetSize(uint32_t size) { | 43 void SimpleCdmBuffer::SetSize(uint32_t size) { |
35 DCHECK(size <= Capacity()); | 44 DCHECK(size <= Capacity()); |
36 size_ = size > Capacity() ? 0 : size; | 45 size_ = size > Capacity() ? 0 : size; |
37 } | 46 } |
38 | 47 |
39 uint32_t SimpleCdmBuffer::Size() const { | 48 uint32_t SimpleCdmBuffer::Size() const { |
40 return size_; | 49 return size_; |
41 } | 50 } |
42 | 51 |
43 } // namespace media | 52 } // namespace media |
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