Add support for multiplexed channels in remoting::protocol::Session interface.

remoting/protocol/audio_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/audio_reader.h"
 
 #include "base/bind.h"
 #include "net/socket/stream_socket.h"
 #include "remoting/base/constants.h"
 #include "remoting/protocol/session.h"
 #include "remoting/protocol/session_config.h"
 
 namespace remoting {
 namespace protocol {
 
 AudioReader::AudioReader(AudioPacket::Encoding encoding)
-    : session_(NULL),
+    : ChannelDispatcherBase(kAudioChannelName),
       encoding_(encoding),
       audio_stub_(NULL) {
 }
 
 AudioReader::~AudioReader() {
-  if (session_)
-    session_->CancelChannelCreation(kAudioChannelName);
 }
 
 // static
 scoped_ptr<AudioReader> AudioReader::Create(const SessionConfig& config) {
   if (!config.is_audio_enabled())
     return scoped_ptr<AudioReader>(NULL);
   // TODO(kxing): Support different session configurations.
   return scoped_ptr<AudioReader>(new AudioReader(AudioPacket::ENCODING_RAW));
 }
 
-void AudioReader::Init(protocol::Session* session,
-                               AudioStub* audio_stub,
-                               const InitializedCallback& callback) {
-  session_ = session;
-  initialized_callback_ = callback;
-  audio_stub_ = audio_stub;
-
-  session_->CreateStreamChannel(
-      kAudioChannelName,
-      base::Bind(&AudioReader::OnChannelReady, base::Unretained(this)));
-}
-
-bool AudioReader::is_connected() {
-  return channel_.get() != NULL;
-}
-
-void AudioReader::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(&AudioReader::OnNewData,
-                                          base::Unretained(this)));
-  initialized_callback_.Run(true);
+void AudioReader::OnInitialized() {
+  reader_.Init(channel(), base::Bind(&AudioReader::OnNewData,
+                                     base::Unretained(this)));
 }
 
 void AudioReader::OnNewData(scoped_ptr<AudioPacket> packet,
                                     const base::Closure& done_task) {
   audio_stub_->ProcessAudioPacket(packet.Pass(), done_task);
 }
 
 }  // namespace protocol
 }  // namespace remoting