Adding audio unit tests for Android

media/audio/android/opensles_input.h

 // 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.
 
 #ifndef MEDIA_AUDIO_ANDROID_OPENSLES_INPUT_H_
 #define MEDIA_AUDIO_ANDROID_OPENSLES_INPUT_H_
 
 #include <SLES/OpenSLES.h>
 #include <SLES/OpenSLES_Android.h>
 
 #include "base/compiler_specific.h"
+#include "base/synchronization/lock.h"
+#include "base/threading/thread_checker.h"
 #include "media/audio/audio_io.h"
 #include "media/audio/audio_parameters.h"
 #include "media/audio/android/opensles_util.h"
 
 namespace media {
 
 class AudioManagerAndroid;
 
 // Implements PCM audio input support for Android using the OpenSLES API.
 class OpenSLESInputStream : public AudioInputStream {
@@ skipping 12 matching lines @@
   virtual void Close() OVERRIDE;
   virtual double GetMaxVolume() OVERRIDE;
   virtual void SetVolume(double volume) OVERRIDE;
   virtual double GetVolume() OVERRIDE;
   virtual void SetAutomaticGainControl(bool enabled) OVERRIDE;
   virtual bool GetAutomaticGainControl() OVERRIDE;
 
  private:
   bool CreateRecorder();
 
+  // Called from OpenSLES specific audio worker thread.
   static void SimpleBufferQueueCallback(
       SLAndroidSimpleBufferQueueItf buffer_queue, void* instance);
 
+  // Called from OpenSLES specific audio worker thread.
   void ReadBufferQueue();
 
   // Called in Open();
   void SetupAudioBuffer();
 
   // Called in Close();
   void ReleaseAudioBuffer();
 
   // If OpenSLES reports an error this function handles it and passes it to
   // the attached AudioInputCallback::OnError().
   void HandleError(SLresult error);
 
+  base::ThreadChecker thread_checker_;
+
+  base::Lock lock_;
+
   AudioManagerAndroid* audio_manager_;
 
   AudioInputCallback* callback_;
 
   // Shared engine interfaces for the app.
   media::ScopedSLObjectItf recorder_object_;
   media::ScopedSLObjectItf engine_object_;
 
   SLRecordItf recorder_;
 
@@ skipping 10 matching lines @@
   int buffer_size_bytes_;
 
   bool started_;
 
   DISALLOW_COPY_AND_ASSIGN(OpenSLESInputStream);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_AUDIO_ANDROID_OPENSLES_INPUT_H_