remoting/protocol/protobuf_video_writer.cc

   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 #include "remoting/protocol/protobuf_video_writer.h"
   6
   7 #include "base/bind.h"
   8 #include "net/socket/stream_socket.h"
   9 #include "remoting/base/constants.h"
  10 #include "remoting/proto/video.pb.h"
  11 #include "remoting/protocol/channel_factory.h"
  12 #include "remoting/protocol/session.h"
  13 #include "remoting/protocol/util.h"
  14
  15 namespace remoting {
  16 namespace protocol {
  17
  18 ProtobufVideoWriter::ProtobufVideoWriter()
  19     : channel_factory_(NULL) {
  20 }
  21
  22 ProtobufVideoWriter::~ProtobufVideoWriter() {
  23   Close();
  24 }
  25
  26 void ProtobufVideoWriter::Init(protocol::Session* session,
  27                                const InitializedCallback& callback) {
  28   channel_factory_ = session->GetTransportChannelFactory();
  29   initialized_callback_ = callback;
  30
  31   channel_factory_->CreateStreamChannel(
  32       kVideoChannelName,
  33       base::Bind(&ProtobufVideoWriter::OnChannelReady, base::Unretained(this)));
  34 }
  35
  36 void ProtobufVideoWriter::OnChannelReady(scoped_ptr<net::StreamSocket> socket) {
  37   if (!socket.get()) {
  38     initialized_callback_.Run(false);
  39     return;
  40   }
  41
  42   DCHECK(!channel_.get());
  43   channel_ = socket.Pass();
  44   // TODO(sergeyu): Provide WriteFailedCallback for the buffered writer.
  45   buffered_writer_.Init(
  46       channel_.get(), BufferedSocketWriter::WriteFailedCallback());
  47
  48   initialized_callback_.Run(true);
  49 }
  50
  51 void ProtobufVideoWriter::Close() {
  52   buffered_writer_.Close();
  53   channel_.reset();
  54   if (channel_factory_) {
  55     channel_factory_->CancelChannelCreation(kVideoChannelName);
  56     channel_factory_ = NULL;
  57   }
  58 }
  59
  60 bool ProtobufVideoWriter::is_connected() {
  61   return channel_.get() != NULL;
  62 }
  63
  64 void ProtobufVideoWriter::ProcessVideoPacket(scoped_ptr<VideoPacket> packet,
  65                                              const base::Closure& done) {
  66   // Older clients may expect deprecated flags field. Always set it to 7.
  67   //
  68   // TODO(sergeyu): Remove this field after M31 is released.
  69   packet->set_deprecated_flags(7);
  70
  71   buffered_writer_.Write(SerializeAndFrameMessage(*packet), done);
  72 }
  73
  74 }  // namespace protocol
  75 }  // namespace remoting