Chromium Code Reviews
chromiumcodereview-hr@appspot.gserviceaccount.com (chromiumcodereview-hr) | Please choose your nickname with Settings | Help | Chromium Project | Gerrit Changes | Sign out
(34)

Side by Side Diff: net/websockets/websocket_deflater.h

Issue 992733002: Remove //net (except for Android test stuff) and sdch (Closed) Base URL: git@github.com:domokit/mojo.git@master
Patch Set: Created 5 years, 9 months ago
Use n/p to move between diff chunks; N/P to move between comments. Draft comments are only viewable by you.
Jump to:
View unified diff | Download patch
« no previous file with comments | « net/websockets/websocket_deflate_stream_test.cc ('k') | net/websockets/websocket_deflater.cc » ('j') | no next file with comments »
Toggle Intra-line Diffs ('i') | Expand Comments ('e') | Collapse Comments ('c') | Show Comments Hide Comments ('s')
OLDNEW
(Empty)
1 // Copyright 2013 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 NET_WEBSOCKETS_WEBSOCKET_DEFLATER_H_
6 #define NET_WEBSOCKETS_WEBSOCKET_DEFLATER_H_
7
8 #include <deque>
9 #include <vector>
10
11 #include "base/basictypes.h"
12 #include "base/memory/ref_counted.h"
13 #include "base/memory/scoped_ptr.h"
14 #include "net/base/net_export.h"
15
16 extern "C" struct z_stream_s;
17
18 namespace net {
19
20 class IOBufferWithSize;
21
22 class NET_EXPORT_PRIVATE WebSocketDeflater {
23 public:
24 // Do not reorder or remove entries of this enum. The values of them are used
25 // in UMA.
26 enum ContextTakeOverMode {
27 DO_NOT_TAKE_OVER_CONTEXT,
28 TAKE_OVER_CONTEXT,
29 NUM_CONTEXT_TAKEOVER_MODE_TYPES,
30 };
31
32 explicit WebSocketDeflater(ContextTakeOverMode mode);
33 ~WebSocketDeflater();
34
35 // Returns true if there is no error and false otherwise.
36 // This function must be called exactly once before calling any of
37 // following methods.
38 // |window_bits| must be between 8 and 15 (both inclusive).
39 bool Initialize(int window_bits);
40
41 // Adds bytes to |stream_|.
42 // Returns true if there is no error and false otherwise.
43 bool AddBytes(const char* data, size_t size);
44
45 // Flushes the current processing data.
46 // Returns true if there is no error and false otherwise.
47 bool Finish();
48
49 // Pushes "\x00\x00\xff\xff" to the end of the buffer.
50 void PushSyncMark();
51
52 // Returns the current deflated output.
53 // If the current output is larger than |size| bytes,
54 // returns the first |size| bytes of the current output.
55 // The returned bytes will be dropped from the current output and never be
56 // returned thereafter.
57 scoped_refptr<IOBufferWithSize> GetOutput(size_t size);
58
59 // Returns the size of the current deflated output.
60 size_t CurrentOutputSize() const { return buffer_.size(); }
61
62 private:
63 void ResetContext();
64 int Deflate(int flush);
65
66 scoped_ptr<z_stream_s> stream_;
67 ContextTakeOverMode mode_;
68 std::deque<char> buffer_;
69 std::vector<char> fixed_buffer_;
70 // true if bytes were added after last Finish().
71 bool are_bytes_added_;
72
73 DISALLOW_COPY_AND_ASSIGN(WebSocketDeflater);
74 };
75
76 } // namespace net
77
78 #endif // NET_WEBSOCKETS_WEBSOCKET_DEFLATER_H_
OLDNEW
« no previous file with comments | « net/websockets/websocket_deflate_stream_test.cc ('k') | net/websockets/websocket_deflater.cc » ('j') | no next file with comments »

Powered by Google App Engine
This is Rietveld 408576698