Use a separate thread for audio capturing and encoding.

remoting/host/audio_scheduler.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/host/audio_scheduler.h"
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/location.h"
 #include "base/logging.h"
 #include "base/single_thread_task_runner.h"
 #include "remoting/codec/audio_encoder.h"
 #include "remoting/host/audio_capturer.h"
 #include "remoting/proto/audio.pb.h"
 #include "remoting/protocol/audio_stub.h"
 
 namespace remoting {
 
 AudioScheduler::AudioScheduler(
-    scoped_refptr<base::SingleThreadTaskRunner> capture_task_runner,
+    scoped_refptr<base::SingleThreadTaskRunner> audio_task_runner,
     scoped_refptr<base::SingleThreadTaskRunner> network_task_runner,
     AudioCapturer* audio_capturer,
     scoped_ptr<AudioEncoder> audio_encoder,
     protocol::AudioStub* audio_stub)
-    : capture_task_runner_(capture_task_runner),
+    : audio_task_runner_(audio_task_runner),
       network_task_runner_(network_task_runner),
       audio_capturer_(audio_capturer),
       audio_encoder_(audio_encoder.Pass()),
       audio_stub_(audio_stub),
       network_stopped_(false) {
-  DCHECK(capture_task_runner_);
+  DCHECK(audio_task_runner_);
   DCHECK(network_task_runner_);
   DCHECK(audio_capturer_);
   DCHECK(audio_stub_);
-  capture_task_runner_->PostTask(
+  audio_task_runner_->PostTask(
       FROM_HERE, base::Bind(&AudioScheduler::DoStart, this));
 }
 
 void AudioScheduler::Stop(const base::Closure& done_task) {
   DCHECK(!done_task.is_null());
 
-  if (!capture_task_runner_->BelongsToCurrentThread()) {
-    capture_task_runner_->PostTask(FROM_HERE, base::Bind(
+  if (!audio_task_runner_->BelongsToCurrentThread()) {
+    audio_task_runner_->PostTask(FROM_HERE, base::Bind(
         &AudioScheduler::Stop, this, done_task));
     return;
   }
 
   audio_capturer_->Stop();
 
   network_task_runner_->PostTask(FROM_HERE, base::Bind(
       &AudioScheduler::DoStopOnNetworkThread, this, done_task));
 }
 
@@ skipping 14 matching lines @@
 
   // The audio encoder returns a NULL audio packet if there's no audio to send.
   if (encoded_packet.get()) {
     network_task_runner_->PostTask(
         FROM_HERE, base::Bind(&AudioScheduler::DoSendAudioPacket,
                               this, base::Passed(encoded_packet.Pass())));
   }
 }
 
 void AudioScheduler::DoStart() {
-  DCHECK(capture_task_runner_->BelongsToCurrentThread());
+  DCHECK(audio_task_runner_->BelongsToCurrentThread());
 
   // TODO(kxing): Do something with the return value.
   audio_capturer_->Start(
       base::Bind(&AudioScheduler::NotifyAudioPacketCaptured, this));
 }
 
 void AudioScheduler::DoSendAudioPacket(scoped_ptr<AudioPacket> packet) {
   DCHECK(network_task_runner_->BelongsToCurrentThread());
   DCHECK(packet.get());
 
@@ skipping 10 matching lines @@
 
 void AudioScheduler::DoStopOnNetworkThread(const base::Closure& done_task) {
   DCHECK(network_task_runner_->BelongsToCurrentThread());
 
   network_stopped_ = true;
 
   done_task.Run();
 }
 
 }  // namespace remoting