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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 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 "content/browser/speech/chunked_byte_buffer.h" | 5 #include "content/browser/speech/chunked_byte_buffer.h" |
6 | 6 |
7 #include <algorithm> | 7 #include <algorithm> |
8 | 8 |
9 #include "base/basictypes.h" | 9 #include "base/basictypes.h" |
10 #include "base/lazy_instance.h" | 10 #include "base/lazy_instance.h" |
11 #include "base/logging.h" | 11 #include "base/logging.h" |
12 | 12 |
13 namespace { | 13 namespace { |
14 | 14 |
15 static const size_t kHeaderLength = sizeof(uint32); | 15 static const size_t kHeaderLength = sizeof(uint32); |
16 | 16 |
17 COMPILE_ASSERT(sizeof(size_t) >= kHeaderLength, | 17 static_assert(sizeof(size_t) >= kHeaderLength, |
18 ChunkedByteBufferNotSupportedOnThisArchitecture); | 18 "chunked byte buffer not supported on this architecture"); |
19 | 19 |
20 uint32 ReadBigEndian32(const uint8* buffer) { | 20 uint32 ReadBigEndian32(const uint8* buffer) { |
21 return (static_cast<uint32>(buffer[3])) | | 21 return (static_cast<uint32>(buffer[3])) | |
22 (static_cast<uint32>(buffer[2]) << 8) | | 22 (static_cast<uint32>(buffer[2]) << 8) | |
23 (static_cast<uint32>(buffer[1]) << 16) | | 23 (static_cast<uint32>(buffer[1]) << 16) | |
24 (static_cast<uint32>(buffer[0]) << 24); | 24 (static_cast<uint32>(buffer[0]) << 24); |
25 } | 25 } |
26 | 26 |
27 } // namespace | 27 } // namespace |
28 | 28 |
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127 | 127 |
128 ChunkedByteBuffer::Chunk::~Chunk() { | 128 ChunkedByteBuffer::Chunk::~Chunk() { |
129 } | 129 } |
130 | 130 |
131 size_t ChunkedByteBuffer::Chunk::ExpectedContentLength() const { | 131 size_t ChunkedByteBuffer::Chunk::ExpectedContentLength() const { |
132 DCHECK_EQ(header.size(), kHeaderLength); | 132 DCHECK_EQ(header.size(), kHeaderLength); |
133 return static_cast<size_t>(ReadBigEndian32(&header[0])); | 133 return static_cast<size_t>(ReadBigEndian32(&header[0])); |
134 } | 134 } |
135 | 135 |
136 } // namespace content | 136 } // namespace content |
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