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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 REMOTING_PROTOCOL_MESSAGE_DECODER_H_ | 5 #ifndef REMOTING_PROTOCOL_MESSAGE_DECODER_H_ |
6 #define REMOTING_PROTOCOL_MESSAGE_DECODER_H_ | 6 #define REMOTING_PROTOCOL_MESSAGE_DECODER_H_ |
7 | 7 |
8 #include <deque> | 8 #include <deque> |
9 #include <list> | 9 #include <list> |
10 | 10 |
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33 class MessageDecoder { | 33 class MessageDecoder { |
34 public: | 34 public: |
35 MessageDecoder(); | 35 MessageDecoder(); |
36 virtual ~MessageDecoder(); | 36 virtual ~MessageDecoder(); |
37 | 37 |
38 // Add next chunk of data. MessageDecoder retains |data| until all | 38 // Add next chunk of data. MessageDecoder retains |data| until all |
39 // its bytes are consumed. | 39 // its bytes are consumed. |
40 void AddData(scoped_refptr<net::IOBuffer> data, int data_size); | 40 void AddData(scoped_refptr<net::IOBuffer> data, int data_size); |
41 | 41 |
42 // Returns next message from the stream. Ownership of the result is | 42 // Returns next message from the stream. Ownership of the result is |
43 // passed to the caller. Returns NULL if there are no complete | 43 // passed to the caller. Returns nullptr if there are no complete |
44 // messages yet, otherwise returns a buffer that contains one | 44 // messages yet, otherwise returns a buffer that contains one |
45 // message. | 45 // message. |
46 CompoundBuffer* GetNextMessage(); | 46 CompoundBuffer* GetNextMessage(); |
47 | 47 |
48 private: | 48 private: |
49 // Retrieves the read payload size of the current protocol buffer via |size|. | 49 // Retrieves the read payload size of the current protocol buffer via |size|. |
50 // Returns false and leaves |size| unmodified, if we do not have enough data | 50 // Returns false and leaves |size| unmodified, if we do not have enough data |
51 // to retrieve the current size. | 51 // to retrieve the current size. |
52 bool GetPayloadSize(int* size); | 52 bool GetPayloadSize(int* size); |
53 | 53 |
54 CompoundBuffer buffer_; | 54 CompoundBuffer buffer_; |
55 | 55 |
56 // |next_payload_| stores the size of the next payload if known. | 56 // |next_payload_| stores the size of the next payload if known. |
57 // |next_payload_known_| is true if the size of the next payload is known. | 57 // |next_payload_known_| is true if the size of the next payload is known. |
58 // After one payload is read this is reset to false. | 58 // After one payload is read this is reset to false. |
59 int next_payload_; | 59 int next_payload_; |
60 bool next_payload_known_; | 60 bool next_payload_known_; |
61 }; | 61 }; |
62 | 62 |
63 } // namespace protocol | 63 } // namespace protocol |
64 } // namespace remoting | 64 } // namespace remoting |
65 | 65 |
66 #endif // REMOTING_PROTOCOL_MESSAGE_DECODER_H_ | 66 #endif // REMOTING_PROTOCOL_MESSAGE_DECODER_H_ |
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