Simplify VideoReader and VideoWriter

remoting/protocol/protobuf_video_reader.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_reader.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/session.h"
-#include "remoting/protocol/stream_channel_factory.h"
-
-namespace remoting {
-namespace protocol {
-
-ProtobufVideoReader::ProtobufVideoReader(VideoPacketFormat::Encoding encoding)
-    : encoding_(encoding),
-      channel_factory_(NULL),
-      video_stub_(NULL) {
-}
-
-ProtobufVideoReader::~ProtobufVideoReader() {
-  if (channel_factory_)
-    channel_factory_->CancelChannelCreation(kVideoChannelName);
-}
-
-void ProtobufVideoReader::Init(protocol::Session* session,
-                               VideoStub* video_stub,
-                               const InitializedCallback& callback) {
-  channel_factory_ = session->GetTransportChannelFactory();
-  initialized_callback_ = callback;
-  video_stub_ = video_stub;
-
-  channel_factory_->CreateChannel(
-      kVideoChannelName,
-      base::Bind(&ProtobufVideoReader::OnChannelReady, base::Unretained(this)));
-}
-
-bool ProtobufVideoReader::is_connected() {
-  return channel_.get() != NULL;
-}
-
-void ProtobufVideoReader::OnChannelReady(scoped_ptr<net::StreamSocket> socket) {
-  if (!socket.get()) {
-    initialized_callback_.Run(false);
-    return;
-  }
-
-  DCHECK(!channel_.get());
-  channel_ = socket.Pass();
-  reader_.Init(channel_.get(), base::Bind(&ProtobufVideoReader::OnNewData,
-                                          base::Unretained(this)));
-  initialized_callback_.Run(true);
-}
-
-void ProtobufVideoReader::OnNewData(scoped_ptr<VideoPacket> packet,
-                                    const base::Closure& done_task) {
-  video_stub_->ProcessVideoPacket(packet.Pass(), done_task);
-}
-
-}  // namespace protocol
-}  // namespace remoting