Implement AudioOutputProxy.

media/audio/linux/audio_manager_linux.cc

 // Copyright (c) 2010 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 "media/audio/linux/audio_manager_linux.h"
 
 #include "base/command_line.h"
 #include "base/logging.h"
+#include "media/audio/audio_output_dispatcher.h"
 #include "media/audio/fake_audio_input_stream.h"
 #include "media/audio/fake_audio_output_stream.h"
 #include "media/audio/linux/alsa_input.h"
 #include "media/audio/linux/alsa_output.h"
 #include "media/audio/linux/alsa_wrapper.h"
 #include "media/base/limits.h"
 #include "media/base/media_switches.h"
 
 namespace {
 
@@ skipping 68 matching lines @@
 AudioManagerLinux::AudioManagerLinux() {
 }
 
 AudioManagerLinux::~AudioManagerLinux() {
   // Make sure we stop the thread first. If we let the default destructor to
   // destruct the members, we may destroy audio streams before stopping the
   // thread, resulting an unexpected behavior.
   // This way we make sure activities of the audio streams are all stopped
   // before we destroy them.
   audio_thread_.Stop();
+
+  // Free output dispatchers first, so that they closes all streams that

[scherkus (not reviewing), 2010/11/22 06:43:15]

nit: so that they closes all streams that are still open -> closing all
remaining open streams

[Sergey Ulanov, 2010/11/23 19:51:46]

Done.

+  // are still open.
+  output_dispatchers_.clear();

[scherkus (not reviewing), 2010/11/22 06:43:15]

why only on linux?

[Sergey Ulanov, 2010/11/23 19:51:46]

Because on Windows and on Mac AudioManager doesn't store list of audio streams.
I don't think we need this for Linux ether, but I'll leave this for a separate
CL. 

+
   active_streams_.clear();
 }
 
 void AudioManagerLinux::Init() {
   AudioManagerBase::Init();
   wrapper_.reset(new AlsaWrapper());
 }
 
 void AudioManagerLinux::MuteAll() {
   NOTIMPLEMENTED();
 }
 
 void AudioManagerLinux::UnMuteAll() {
   NOTIMPLEMENTED();
 }
 
 void AudioManagerLinux::ReleaseOutputStream(AlsaPcmOutputStream* stream) {
   if (stream) {
     AutoLock l(lock_);
     active_streams_.erase(stream);
   }
 }
 
 // static
 AudioManager* AudioManager::CreateAudioManager() {
   return new AudioManagerLinux();
 }