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

Issue 10877014: Moved the video encoders/decoders to the codec directory. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: Addressed comments Created 8 years, 4 months ago
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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #ifndef REMOTING_BASE_ENCODER_ROW_BASED_H_
6 #define REMOTING_BASE_ENCODER_ROW_BASED_H_
7
8 #include "remoting/base/encoder.h"
9 #include "remoting/proto/video.pb.h"
10 #include "third_party/skia/include/core/SkRect.h"
11
12 namespace remoting {
13
14 class Compressor;
15
16 // EncoderRowBased implements an Encoder using zlib or verbatim
17 // compression. Zlib-based encoder must be created using
18 // CreateZlibEncoder(), verbatim encoder is created with
19 // CreateVerbatimEncoder().
20 //
21 // Compressor is reset before encoding each rectangle, so that each
22 // rectangle can be decoded independently.
23 class EncoderRowBased : public Encoder {
24 public:
25 static EncoderRowBased* CreateZlibEncoder();
26 static EncoderRowBased* CreateZlibEncoder(int packet_size);
27 static EncoderRowBased* CreateVerbatimEncoder();
28 static EncoderRowBased* CreateVerbatimEncoder(int packet_size);
29
30 virtual ~EncoderRowBased();
31
32 virtual void Encode(
33 scoped_refptr<CaptureData> capture_data,
34 bool key_frame,
35 const DataAvailableCallback& data_available_callback) OVERRIDE;
36
37 private:
38 EncoderRowBased(Compressor* compressor, VideoPacketFormat::Encoding encoding);
39 EncoderRowBased(Compressor* compressor, VideoPacketFormat::Encoding encoding,
40 int packet_size);
41
42 // Encode a single dirty rect using compressor.
43 void EncodeRect(const SkIRect& rect, bool last);
44
45 // Marks a packet as the first in a series of rectangle updates.
46 void PrepareUpdateStart(const SkIRect& rect, VideoPacket* packet);
47
48 // Retrieves a pointer to the output buffer in |update| used for storing the
49 // encoded rectangle data. Will resize the buffer to |size|.
50 uint8* GetOutputBuffer(VideoPacket* packet, size_t size);
51
52 // Submit |message| to |callback_|.
53 void SubmitMessage(VideoPacket* packet, size_t rect_index);
54
55 // The encoding of the incoming stream.
56 VideoPacketFormat::Encoding encoding_;
57
58 scoped_ptr<Compressor> compressor_;
59
60 scoped_refptr<CaptureData> capture_data_;
61 DataAvailableCallback callback_;
62
63 // The most recent screen size.
64 SkISize screen_size_;
65
66 int packet_size_;
67 };
68
69 } // namespace remoting
70
71 #endif // REMOTING_BASE_ENCODER_ROW_BASED_H_
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