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Side by Side Diff: remoting/base/decoder_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) 2012 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_DECODER_ROW_BASED_H_
6 #define REMOTING_BASE_DECODER_ROW_BASED_H_
7
8 #include "base/compiler_specific.h"
9 #include "base/memory/scoped_ptr.h"
10 #include "remoting/base/decoder.h"
11
12 namespace remoting {
13
14 class Decompressor;
15
16 class DecoderRowBased : public Decoder {
17 public:
18 virtual ~DecoderRowBased();
19
20 static DecoderRowBased* CreateZlibDecoder();
21 static DecoderRowBased* CreateVerbatimDecoder();
22
23 // Decoder implementation.
24 virtual bool IsReadyForData() OVERRIDE;
25 virtual void Initialize(const SkISize& screen_size) OVERRIDE;
26 virtual DecodeResult DecodePacket(const VideoPacket* packet) OVERRIDE;
27 virtual VideoPacketFormat::Encoding Encoding() OVERRIDE;
28 virtual void Invalidate(const SkISize& view_size,
29 const SkRegion& region) OVERRIDE;
30 virtual void RenderFrame(const SkISize& view_size,
31 const SkIRect& clip_area,
32 uint8* image_buffer,
33 int image_stride,
34 SkRegion* output_region) OVERRIDE;
35
36 private:
37 enum State {
38 kUninitialized,
39 kReady,
40 kProcessing,
41 kPartitionDone,
42 kDone,
43 kError,
44 };
45
46 DecoderRowBased(Decompressor* decompressor,
47 VideoPacketFormat::Encoding encoding);
48
49 // Helper method. Called from DecodePacket to updated state of the decoder.
50 void UpdateStateForPacket(const VideoPacket* packet);
51
52 // The internal state of the decoder.
53 State state_;
54
55 // Keeps track of the updating rect.
56 SkIRect clip_;
57
58 // The compression for the input byte stream.
59 scoped_ptr<Decompressor> decompressor_;
60
61 // The encoding of the incoming stream.
62 VideoPacketFormat::Encoding encoding_;
63
64 // The position in the row that we are updating.
65 int row_pos_;
66
67 // The current row in the rect that we are updaing.
68 int row_y_;
69
70 // The region updated that hasn't been copied to the screen yet.
71 SkRegion updated_region_;
72
73 // Size of the remote screen.
74 SkISize screen_size_;
75
76 // The bitmap holding the remote screen bits.
77 scoped_array<uint8> screen_buffer_;
78
79 DISALLOW_COPY_AND_ASSIGN(DecoderRowBased);
80 };
81
82 } // namespace remoting
83
84 #endif // REMOTING_BASE_DECODER_ROW_BASED_H_
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