Make LevelEstimation not a ProcessingComponent.

webrtc/modules/audio_processing/level_estimator_impl.h

Index: webrtc/modules/audio_processing/level_estimator_impl.h
diff --git a/webrtc/modules/audio_processing/level_estimator_impl.h b/webrtc/modules/audio_processing/level_estimator_impl.h
index d560223157f0d115d811f7d466f5b2140ea8ad43..4401da37e432d1ed85dcea52c06156e8d3fef164 100644
--- a/webrtc/modules/audio_processing/level_estimator_impl.h
+++ b/webrtc/modules/audio_processing/level_estimator_impl.h
@@ -11,42 +11,36 @@
 #ifndef WEBRTC_MODULES_AUDIO_PROCESSING_LEVEL_ESTIMATOR_IMPL_H_
 #define WEBRTC_MODULES_AUDIO_PROCESSING_LEVEL_ESTIMATOR_IMPL_H_
 
+#include "webrtc/base/constructormagic.h"
 #include "webrtc/base/criticalsection.h"
+#include "webrtc/base/scoped_ptr.h"
 #include "webrtc/modules/audio_processing/include/audio_processing.h"
-#include "webrtc/modules/audio_processing/processing_component.h"
-#include "webrtc/modules/audio_processing/rms_level.h"
 
 namespace webrtc {
 
 class AudioBuffer;
+class RMSLevel;
 
-class LevelEstimatorImpl : public LevelEstimator,
-                           public ProcessingComponent {
+class LevelEstimatorImpl : public LevelEstimator {
  public:
-  LevelEstimatorImpl(const AudioProcessing* apm, rtc::CriticalSection* crit);
-  virtual ~LevelEstimatorImpl();
+  explicit LevelEstimatorImpl(rtc::CriticalSection* crit);
+  ~LevelEstimatorImpl() override;
 
-  int ProcessStream(AudioBuffer* audio);
+  // TODO(peah): Fold into ctor, once public API is removed.
+  void Initialize();
+  void ProcessStream(AudioBuffer* audio);
 
   // LevelEstimator implementation.
-  bool is_enabled() const override;
-
- private:
-  // LevelEstimator implementation.
   int Enable(bool enable) override;
+  bool is_enabled() const override;
   int RMS() override;
 
-  // ProcessingComponent implementation.
-  void* CreateHandle() const override;
-  int InitializeHandle(void* handle) const override;
-  int ConfigureHandle(void* handle) const override;
-  void DestroyHandle(void* handle) const override;
-  int num_handles_required() const override;
-  int GetHandleError(void* handle) const override;
-
-  rtc::CriticalSection* const crit_;
+ private:
+  rtc::CriticalSection* const crit_ = nullptr;
+  bool enabled_ GUARDED_BY(crit_) = false;
+  rtc::scoped_ptr<RMSLevel> rms_ GUARDED_BY(crit_);
+  RTC_DISALLOW_IMPLICIT_CONSTRUCTORS(LevelEstimatorImpl);
 };
-
 }  // namespace webrtc
 
 #endif  // WEBRTC_MODULES_AUDIO_PROCESSING_LEVEL_ESTIMATOR_IMPL_H_