Simplify VideoReader and VideoWriter

remoting/protocol/protobuf_video_writer.cc

-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "remoting/protocol/protobuf_video_writer.h"
-
-#include "base/bind.h"
-#include "net/socket/stream_socket.h"
-#include "remoting/base/constants.h"
-#include "remoting/proto/video.pb.h"
-#include "remoting/protocol/message_serialization.h"
-#include "remoting/protocol/session.h"
-#include "remoting/protocol/stream_channel_factory.h"
-
-namespace remoting {
-namespace protocol {
-
-ProtobufVideoWriter::ProtobufVideoWriter()
-    : channel_factory_(NULL) {
-}
-
-ProtobufVideoWriter::~ProtobufVideoWriter() {
-  Close();
-}
-
-void ProtobufVideoWriter::Init(protocol::Session* session,
-                               const InitializedCallback& callback) {
-  channel_factory_ = session->GetTransportChannelFactory();
-  initialized_callback_ = callback;
-
-  channel_factory_->CreateChannel(
-      kVideoChannelName,
-      base::Bind(&ProtobufVideoWriter::OnChannelReady, base::Unretained(this)));
-}
-
-void ProtobufVideoWriter::OnChannelReady(scoped_ptr<net::StreamSocket> socket) {
-  if (!socket.get()) {
-    initialized_callback_.Run(false);
-    return;
-  }
-
-  DCHECK(!channel_.get());
-  channel_ = socket.Pass();
-  // TODO(sergeyu): Provide WriteFailedCallback for the buffered writer.
-  buffered_writer_.Init(
-      channel_.get(), BufferedSocketWriter::WriteFailedCallback());
-
-  initialized_callback_.Run(true);
-}
-
-void ProtobufVideoWriter::Close() {
-  buffered_writer_.Close();
-  channel_.reset();
-  if (channel_factory_) {
-    channel_factory_->CancelChannelCreation(kVideoChannelName);
-    channel_factory_ = NULL;
-  }
-}
-
-bool ProtobufVideoWriter::is_connected() {
-  return channel_.get() != NULL;
-}
-
-void ProtobufVideoWriter::ProcessVideoPacket(scoped_ptr<VideoPacket> packet,
-                                             const base::Closure& done) {
-  buffered_writer_.Write(SerializeAndFrameMessage(*packet), done);
-}
-
-}  // namespace protocol
-}  // namespace remoting