Audio output debug recording.

chrome/browser/media/webrtc/audio_debug_recordings_handler.cc

 // Copyright 2016 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 "chrome/browser/media/audio_debug_recordings_handler.h"
 
 #include <string>
 #include <utility>
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/files/file_util.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/time/time.h"
 #include "chrome/browser/media/webrtc/webrtc_log_list.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/chrome_switches.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/render_process_host.h"
+#include "media/audio/audio_manager.h"
 
 using content::BrowserThread;
 
 // Keys used to attach handler to the RenderProcessHost
 const char AudioDebugRecordingsHandler::kAudioDebugRecordingsHandlerKey[] =
     "kAudioDebugRecordingsHandlerKey";
 
 namespace {
 
 // Returns a path name to be used as prefix for audio debug recordings files.
@@ skipping 69 matching lines @@
   if (is_audio_debug_recordings_in_progress_) {
     error_callback.Run("Audio debug recordings already in progress");
     return;
   }
 
   is_audio_debug_recordings_in_progress_ = true;
   base::FilePath prefix_path = GetAudioDebugRecordingsPrefixPath(
       log_directory, ++current_audio_debug_recordings_id_);
   host->EnableAudioDebugRecordings(prefix_path);
 
+  // AudioManager is deleted on the audio thread, and the AudioManager outlives
+  // this object, so it's safe to post unretained.
+  media::AudioManager* audio_manager = media::AudioManager::Get();
+  audio_manager->GetTaskRunner()->PostTask(
+      FROM_HERE, base::Bind(&media::AudioManager::EnableOutputDebugRecording,
+                            base::Unretained(audio_manager), prefix_path));
+
   if (delay.is_zero()) {
     const bool is_stopped = false, is_manual_stop = false;
     callback.Run(prefix_path.AsUTF8Unsafe(), is_stopped, is_manual_stop);
     return;
   }
 
   const bool is_manual_stop = false;
   BrowserThread::PostDelayedTask(
       BrowserThread::UI, FROM_HERE,
       base::Bind(&AudioDebugRecordingsHandler::DoStopAudioDebugRecordings, this,
@@ skipping 23 matching lines @@
     const bool is_stopped = false;
     callback.Run(prefix_path.AsUTF8Unsafe(), is_stopped, is_manual_stop);
     return;
   }
 
   if (!is_audio_debug_recordings_in_progress_) {
     error_callback.Run("No audio debug recording in progress");
     return;
   }
 
+  // AudioManager is deleted on the audio thread, and the AudioManager outlives
+  // this object, so it's safe to post unretained.
+  media::AudioManager* audio_manager = media::AudioManager::Get();
+  audio_manager->GetTaskRunner()->PostTask(
+      FROM_HERE, base::Bind(&media::AudioManager::DisableOutputDebugRecording,
+                            base::Unretained(audio_manager)));
+
   host->DisableAudioDebugRecordings();
+
   is_audio_debug_recordings_in_progress_ = false;
   const bool is_stopped = true;
   callback.Run(prefix_path.AsUTF8Unsafe(), is_stopped, is_manual_stop);
 }