Pull the Voice Activity Detector out from the AGC

webrtc/modules/audio_processing/vad/gmm.h

 /*
  *  Copyright (c) 2012 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.
  */
 
-#ifndef WEBRTC_MODULES_AUDIO_PROCESSING_AGC_GMM_H_
-#define WEBRTC_MODULES_AUDIO_PROCESSING_AGC_GMM_H_
+#ifndef WEBRTC_MODULES_AUDIO_PROCESSING_VAD_GMM_H_
+#define WEBRTC_MODULES_AUDIO_PROCESSING_VAD_GMM_H_
 
 namespace webrtc {
 
 // A structure that specifies a GMM.
 // A GMM is formulated as
 //  f(x) = w[0] * mixture[0] + w[1] * mixture[1] + ... +
 //         w[num_mixtures - 1] * mixture[num_mixtures - 1];
 // Where a 'mixture' is a Gaussian density.
 
 struct GmmParameters {
@@ skipping 12 matching lines @@
   // number of the mixtures.
   int num_mixtures;
 };
 
 // Evaluate the given GMM, according to |gmm_parameters|, at the given point
 // |x|. If the dimensionality of the given GMM is larger that the maximum
 // acceptable dimension by the following function -1 is returned.
 double EvaluateGmm(const double* x, const GmmParameters& gmm_parameters);
 
 }  // namespace webrtc
-#endif  // WEBRTC_MODULES_AUDIO_PROCESSING_AGC_GMM_H_
+#endif  // WEBRTC_MODULES_AUDIO_PROCESSING_VAD_GMM_H_