Increased initial timer interval in AIC to reduce risk of false alarms.

media/audio/audio_input_controller.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 "media/audio/audio_input_controller.h"
 
 #include "base/bind.h"
 #include "base/threading/thread_restrictions.h"
 #include "media/base/limits.h"
 
 namespace {
 const int kMaxInputChannels = 2;
 const int kTimerResetIntervalSeconds = 1;
 #if defined(OS_IOS)
 // The first callback on iOS is received after the current background
 // audio has faded away.
 const int kTimerInitialIntervalSeconds = 4;
 #else
-const int kTimerInitialIntervalSeconds = 1;
+// We have received reports that the timer can be too trigger happy on some
+// Mac devices and the initial timer interval has therefore been increased
+// from 1 second to 5 seconds.
+// TODO(henrika): remove usage of timers and add support for proper
+// notification of when the input device is removed.
+// See http://crbug.com/226327 for details.
+const int kTimerInitialIntervalSeconds = 5;
 #endif  // defined(OS_IOS)
 }
 
 namespace media {
 
 // static
 AudioInputController::Factory* AudioInputController::factory_ = NULL;
 
 AudioInputController::AudioInputController(EventHandler* handler,
                                            SyncWriter* sync_writer)
@@ skipping 311 matching lines @@
 
 void AudioInputController::SetDataIsActive(bool enabled) {
   base::subtle::Release_Store(&data_is_active_, enabled);
 }
 
 bool AudioInputController::GetDataIsActive() {
   return (base::subtle::Acquire_Load(&data_is_active_) != false);
 }
 
 }  // namespace media