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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_old.h" | 9 #include "base/callback.h" |
10 #include "media/base/data_buffer.h" | 10 #include "media/base/data_buffer.h" |
11 | 11 |
12 namespace media { | 12 namespace media { |
13 class DataBuffer; | 13 class DataBuffer; |
14 } | 14 } |
15 | 15 |
16 namespace remoting { | 16 namespace remoting { |
17 | 17 |
18 class CaptureData; | 18 class CaptureData; |
19 class VideoPacket; | 19 class VideoPacket; |
20 | 20 |
21 // A class to perform the task of encoding a continous stream of | 21 // A class to perform the task of encoding a continous stream of |
22 // images. | 22 // images. |
23 // This class operates asynchronously to enable maximum throughput. | 23 // This class operates asynchronously to enable maximum throughput. |
24 class Encoder { | 24 class Encoder { |
25 public: | 25 public: |
26 | 26 |
27 // DataAvailableCallback is called as blocks of data are made available | 27 // DataAvailableCallback is called as blocks of data are made available |
28 // from the encoder. Data made available by the encoder is in the form | 28 // from the encoder. Data made available by the encoder is in the form |
29 // of HostMessage to reduce the amount of memory copies. | 29 // of HostMessage to reduce the amount of memory copies. |
30 // The callback takes ownership of the HostMessage and is responsible for | 30 // The callback takes ownership of the HostMessage and is responsible for |
31 // deleting it. | 31 // deleting it. |
32 typedef Callback1<VideoPacket*>::Type DataAvailableCallback; | 32 typedef base::Callback<void(VideoPacket*)> DataAvailableCallback; |
33 | 33 |
34 virtual ~Encoder() {} | 34 virtual ~Encoder() {} |
35 | 35 |
36 // Encode an image stored in |capture_data|. | 36 // Encode an image stored in |capture_data|. |
37 // | 37 // |
38 // If |key_frame| is true, the encoder should not reference | 38 // If |key_frame| is true, the encoder should not reference |
39 // previous encode and encode the full frame. | 39 // previous encode and encode the full frame. |
40 // | 40 // |
41 // When encoded data is available, partial or full |data_available_callback| | 41 // When encoded data is available, partial or full |data_available_callback| |
42 // is called. | 42 // is called. |
43 virtual void Encode(scoped_refptr<CaptureData> capture_data, | 43 virtual void Encode(scoped_refptr<CaptureData> capture_data, |
44 bool key_frame, | 44 bool key_frame, |
45 DataAvailableCallback* data_available_callback) = 0; | 45 const DataAvailableCallback& data_available_callback) = 0; |
46 }; | 46 }; |
47 | 47 |
48 } // namespace remoting | 48 } // namespace remoting |
49 | 49 |
50 #endif // REMOTING_BASE_ENCODER_H_ | 50 #endif // REMOTING_BASE_ENCODER_H_ |
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