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Side by Side Diff: content/browser/speech/chunked_byte_buffer.h

Issue 1549113002: Switch to standard integer types in content/browser/. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: rebase Created 4 years, 12 months ago
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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 #ifndef CONTENT_BROWSER_SPEECH_CHUNKED_BYTE_BUFFER_H_ 5 #ifndef CONTENT_BROWSER_SPEECH_CHUNKED_BYTE_BUFFER_H_
6 #define CONTENT_BROWSER_SPEECH_CHUNKED_BYTE_BUFFER_H_ 6 #define CONTENT_BROWSER_SPEECH_CHUNKED_BYTE_BUFFER_H_
7 7
8 #include <stddef.h>
9 #include <stdint.h>
10
8 #include <string> 11 #include <string>
9 #include <vector> 12 #include <vector>
10 13
11 #include "base/basictypes.h" 14 #include "base/macros.h"
12 #include "base/memory/scoped_ptr.h" 15 #include "base/memory/scoped_ptr.h"
13 #include "base/memory/scoped_vector.h" 16 #include "base/memory/scoped_vector.h"
14 #include "content/common/content_export.h" 17 #include "content/common/content_export.h"
15 18
16 namespace content { 19 namespace content {
17 20
18 // Models a chunk-oriented byte buffer. The term chunk is herein defined as an 21 // Models a chunk-oriented byte buffer. The term chunk is herein defined as an
19 // arbitrary sequence of bytes that is preceeded by N header bytes, indicating 22 // arbitrary sequence of bytes that is preceeded by N header bytes, indicating
20 // its size. Data may be appended to the buffer with no particular respect of 23 // its size. Data may be appended to the buffer with no particular respect of
21 // chunks boundaries. However, chunks can be extracted (FIFO) only when their 24 // chunks boundaries. However, chunks can be extracted (FIFO) only when their
22 // content (according to their header) is fully available in the buffer. 25 // content (according to their header) is fully available in the buffer.
23 // The current implementation support only 4 byte Big Endian headers. 26 // The current implementation support only 4 byte Big Endian headers.
24 // Empty chunks (i.e. the sequence 00 00 00 00) are NOT allowed. 27 // Empty chunks (i.e. the sequence 00 00 00 00) are NOT allowed.
25 // 28 //
26 // E.g. 00 00 00 04 xx xx xx xx 00 00 00 02 yy yy 00 00 00 04 zz zz zz zz 29 // E.g. 00 00 00 04 xx xx xx xx 00 00 00 02 yy yy 00 00 00 04 zz zz zz zz
27 // [----- CHUNK 1 -------] [--- CHUNK 2 ---] [------ CHUNK 3 ------] 30 // [----- CHUNK 1 -------] [--- CHUNK 2 ---] [------ CHUNK 3 ------]
28 class CONTENT_EXPORT ChunkedByteBuffer { 31 class CONTENT_EXPORT ChunkedByteBuffer {
29 public: 32 public:
30 ChunkedByteBuffer(); 33 ChunkedByteBuffer();
31 ~ChunkedByteBuffer(); 34 ~ChunkedByteBuffer();
32 35
33 // Appends |length| bytes starting from |start| to the buffer. 36 // Appends |length| bytes starting from |start| to the buffer.
34 void Append(const uint8* start, size_t length); 37 void Append(const uint8_t* start, size_t length);
35 38
36 // Appends bytes contained in the |string| to the buffer. 39 // Appends bytes contained in the |string| to the buffer.
37 void Append(const std::string& string); 40 void Append(const std::string& string);
38 41
39 // Checks whether one or more complete chunks are available in the buffer. 42 // Checks whether one or more complete chunks are available in the buffer.
40 bool HasChunks() const; 43 bool HasChunks() const;
41 44
42 // If enough data is available, reads and removes the first complete chunk 45 // If enough data is available, reads and removes the first complete chunk
43 // from the buffer. Returns a NULL pointer if no complete chunk is available. 46 // from the buffer. Returns a NULL pointer if no complete chunk is available.
44 scoped_ptr< std::vector<uint8> > PopChunk(); 47 scoped_ptr<std::vector<uint8_t>> PopChunk();
45 48
46 // Clears all the content of the buffer. 49 // Clears all the content of the buffer.
47 void Clear(); 50 void Clear();
48 51
49 // Returns the number of raw bytes (including headers) present. 52 // Returns the number of raw bytes (including headers) present.
50 size_t GetTotalLength() const { return total_bytes_stored_; } 53 size_t GetTotalLength() const { return total_bytes_stored_; }
51 54
52 private: 55 private:
53 struct Chunk { 56 struct Chunk {
54 Chunk(); 57 Chunk();
55 ~Chunk(); 58 ~Chunk();
56 59
57 std::vector<uint8> header; 60 std::vector<uint8_t> header;
58 scoped_ptr< std::vector<uint8> > content; 61 scoped_ptr<std::vector<uint8_t>> content;
59 size_t ExpectedContentLength() const; 62 size_t ExpectedContentLength() const;
60 63
61 private: 64 private:
62 DISALLOW_COPY_AND_ASSIGN(Chunk); 65 DISALLOW_COPY_AND_ASSIGN(Chunk);
63 }; 66 };
64 67
65 ScopedVector<Chunk> chunks_; 68 ScopedVector<Chunk> chunks_;
66 scoped_ptr<Chunk> partial_chunk_; 69 scoped_ptr<Chunk> partial_chunk_;
67 size_t total_bytes_stored_; 70 size_t total_bytes_stored_;
68 71
69 DISALLOW_COPY_AND_ASSIGN(ChunkedByteBuffer); 72 DISALLOW_COPY_AND_ASSIGN(ChunkedByteBuffer);
70 }; 73 };
71 74
72 75
73 } // namespace content 76 } // namespace content
74 77
75 #endif // CONTENT_BROWSER_SPEECH_CHUNKED_BYTE_BUFFER_H_ 78 #endif // CONTENT_BROWSER_SPEECH_CHUNKED_BYTE_BUFFER_H_
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