Chromium Code Reviews
chromiumcodereview-hr@appspot.gserviceaccount.com (chromiumcodereview-hr) | Please choose your nickname with Settings | Help | Chromium Project | Gerrit Changes | Sign out
(73)

Side by Side Diff: blimp/net/compressed_packet_writer.h

Issue 2632803002: Remove all blimp network code. (Closed)
Patch Set: merge from origin/master for good measure Created 3 years, 11 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 | « blimp/net/compressed_packet_unittest.cc ('k') | blimp/net/compressed_packet_writer.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 2016 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 BLIMP_NET_COMPRESSED_PACKET_WRITER_H_
6 #define BLIMP_NET_COMPRESSED_PACKET_WRITER_H_
7
8 #include "base/memory/weak_ptr.h"
9 #include "blimp/net/blimp_net_export.h"
10 #include "blimp/net/packet_writer.h"
11 #include "net/base/completion_callback.h"
12 #include "net/base/io_buffer.h"
13 #include "third_party/zlib/zlib.h"
14
15 namespace blimp {
16
17 // Filter object which wraps a PacketWriter, adding a DEFLATE compression step
18 // to outgoing packets.
19 //
20 // Each packet is appended as a DEFLATE block to a long-lived compression
21 // stream.
22 // Blocks are explicitly flushed at each packet boundary, which prevents zlib's
23 // internal buffers from introducing unwanted output latency.
24 // Gzip headers and CRC checks are omitted from the stream output.
25 class BLIMP_NET_EXPORT CompressedPacketWriter : public PacketWriter {
26 public:
27 // |source|: The PacketWriter which will receive compressed packets.
28 explicit CompressedPacketWriter(std::unique_ptr<PacketWriter> sink);
29 ~CompressedPacketWriter() override;
30
31 // PacketWriter implementation.
32 void WritePacket(const scoped_refptr<net::DrainableIOBuffer>& buf,
33 const net::CompletionCallback& cb) override;
34
35 private:
36 // Compresses |src_buf| into |dest_buf|.
37 // On success, returns a >= 0 value indicating the length of the
38 // compressed payload.
39 // On failure, returns a negative value indicating the error code
40 // (see net_errors.h).
41 int Compress(const scoped_refptr<net::DrainableIOBuffer>& src_buf,
42 const scoped_refptr<net::GrowableIOBuffer>& dest_buf);
43
44 z_stream zlib_stream_;
45 std::unique_ptr<PacketWriter> sink_;
46 scoped_refptr<net::GrowableIOBuffer> compressed_buf_;
47 size_t uncompressed_size_total_ = 0u;
48 size_t compressed_size_total_ = 0u;
49
50 DISALLOW_COPY_AND_ASSIGN(CompressedPacketWriter);
51 };
52
53 } // namespace blimp
54
55 #endif // BLIMP_NET_COMPRESSED_PACKET_WRITER_H_
OLDNEW
« no previous file with comments | « blimp/net/compressed_packet_unittest.cc ('k') | blimp/net/compressed_packet_writer.cc » ('j') | no next file with comments »

Powered by Google App Engine
This is Rietveld 408576698