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Side by Side Diff: remoting/base/encoder.h

Issue 3141036: Revert 57112 - Rename (Host|Client)Message to Chromoting(Host|Client)Message.... (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src/
Patch Set: Created 10 years, 4 months ago
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1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. 1 // Copyright (c) 2010 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_BASE_ENCODER_H_ 5 #ifndef REMOTING_BASE_ENCODER_H_
6 #define REMOTING_BASE_ENCODER_H_ 6 #define REMOTING_BASE_ENCODER_H_
7 7
8 #include "base/basictypes.h" 8 #include "base/basictypes.h"
9 #include "base/callback.h" 9 #include "base/callback.h"
10 #include "media/base/data_buffer.h" 10 #include "media/base/data_buffer.h"
11 #include "remoting/base/protocol/chromotocol.pb.h" 11 #include "remoting/base/protocol/chromotocol.pb.h"
12 12
13 namespace media { 13 namespace media {
14 class DataBuffer; 14 class DataBuffer;
15 } 15 }
16 16
17 namespace remoting { 17 namespace remoting {
18 18
19 class CaptureData; 19 class CaptureData;
20 class ChromotingHostMessage; 20 class HostMessage;
21 21
22 // A class to perform the task of encoding a continous stream of 22 // A class to perform the task of encoding a continous stream of
23 // images. 23 // images.
24 // This class operates asynchronously to enable maximum throughput. 24 // This class operates asynchronously to enable maximum throughput.
25 class Encoder { 25 class Encoder {
26 public: 26 public:
27 27
28 // EncodingState is a bitfield that tracks the state of the encoding. 28 // EncodingState is a bitfield that tracks the state of the encoding.
29 // An encoding that consists of a single block could concievably be starting 29 // An encoding that consists of a single block could concievably be starting
30 // inprogress and ended at the same time. 30 // inprogress and ended at the same time.
31 enum { 31 enum {
32 EncodingStarting = 1 << 0, 32 EncodingStarting = 1 << 0,
33 EncodingInProgress = 1 << 1, 33 EncodingInProgress = 1 << 1,
34 EncodingEnded = 1 << 2 34 EncodingEnded = 1 << 2
35 }; 35 };
36 typedef int EncodingState; 36 typedef int EncodingState;
37 37
38 // DataAvailableCallback is called as blocks of data are made available 38 // DataAvailableCallback is called as blocks of data are made available
39 // from the encoder. Data made available by the encoder is in the form 39 // from the encoder. Data made available by the encoder is in the form
40 // of HostMessage to reduce the amount of memory copies. 40 // of HostMessage to reduce the amount of memory copies.
41 // The callback takes ownership of the HostMessage and is responsible for 41 // The callback takes ownership of the HostMessage and is responsible for
42 // deleting it. 42 // deleting it.
43 typedef Callback2<ChromotingHostMessage*, 43 typedef Callback2<HostMessage*, EncodingState>::Type DataAvailableCallback;
44 EncodingState>::Type DataAvailableCallback;
45 44
46 virtual ~Encoder() {} 45 virtual ~Encoder() {}
47 46
48 // Encode an image stored in |capture_data|. 47 // Encode an image stored in |capture_data|.
49 // 48 //
50 // If |key_frame| is true, the encoder should not reference 49 // If |key_frame| is true, the encoder should not reference
51 // previous encode and encode the full frame. 50 // previous encode and encode the full frame.
52 // 51 //
53 // When encoded data is available, partial or full |data_available_callback| 52 // When encoded data is available, partial or full |data_available_callback|
54 // is called. 53 // is called.
55 virtual void Encode(scoped_refptr<CaptureData> capture_data, 54 virtual void Encode(scoped_refptr<CaptureData> capture_data,
56 bool key_frame, 55 bool key_frame,
57 DataAvailableCallback* data_available_callback) = 0; 56 DataAvailableCallback* data_available_callback) = 0;
58 }; 57 };
59 58
60 } // namespace remoting 59 } // namespace remoting
61 60
62 #endif // REMOTING_BASE_ENCODER_H_ 61 #endif // REMOTING_BASE_ENCODER_H_
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