Improves error handling for playout initialization on Android

webrtc/modules/audio_device/android/audio_track_jni.h

 /*
  *  Copyright (c) 2013 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.
  */
 
@@ skipping 29 matching lines @@
 // guarantees that no other (possibly non attached) thread is used.
 class AudioTrackJni {
  public:
   // Wraps the Java specific parts of the AudioTrackJni into one helper class.
   class JavaAudioTrack {
    public:
     JavaAudioTrack(NativeRegistration* native_registration,
                    std::unique_ptr<GlobalRef> audio_track);
     ~JavaAudioTrack();
 
-    void InitPlayout(int sample_rate, int channels);
+    bool InitPlayout(int sample_rate, int channels);
     bool StartPlayout();
     bool StopPlayout();
     bool SetStreamVolume(int volume);
     int GetStreamMaxVolume();
     int GetStreamVolume();
 
    private:
     std::unique_ptr<GlobalRef> audio_track_;
     jmethodID init_playout_;
     jmethodID start_playout_;
@@ skipping 85 matching lines @@
   // Raw pointer handle provided to us in AttachAudioBuffer(). Owned by the
   // AudioDeviceModuleImpl class and called by AudioDeviceModuleImpl::Create().
   // The AudioDeviceBuffer is a member of the AudioDeviceModuleImpl instance
   // and therefore outlives this object.
   AudioDeviceBuffer* audio_device_buffer_;
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_MODULES_AUDIO_DEVICE_ANDROID_AUDIO_TRACK_JNI_H_