Implement RecordingIsInitialized in file_audio_device.cc.

webrtc/modules/audio_device/dummy/file_audio_device.cc

 /*
  *  Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 #include "webrtc/base/platform_thread.h"
@@ skipping 155 matching lines @@
   _recordingFramesIn10MS = static_cast<size_t>(kRecordingFixedSampleRate / 100);
 
   if (_ptrAudioBuffer) {
     _ptrAudioBuffer->SetRecordingSampleRate(kRecordingFixedSampleRate);
     _ptrAudioBuffer->SetRecordingChannels(kRecordingNumChannels);
   }
   return 0;
 }
 
 bool FileAudioDevice::RecordingIsInitialized() const {
-  return true;
+  return _recordingFramesIn10MS != 0;
 }
 
 int32_t FileAudioDevice::StartPlayout() {
   if (_playing) {
       return 0;
   }
 
   _playoutFramesIn10MS = static_cast<size_t>(kPlayoutFixedSampleRate / 100);
   _playing = true;
   _playoutFramesLeft = 0;
@@ skipping 337 matching lines @@
 
     uint64_t deltaTimeMillis = _clock->CurrentNtpInMilliseconds() - currentTime;
     if(deltaTimeMillis < 10) {
       SleepMs(10 - deltaTimeMillis);
     }
 
     return true;
 }
 
 }  // namespace webrtc