Index: webrtc/base/numerics/exp_filter.cc |
diff --git a/webrtc/base/numerics/exp_filter.cc b/webrtc/base/numerics/exp_filter.cc |
deleted file mode 100644 |
index a4754a64b386c2da7dc20f4a04821146c1b6a2c8..0000000000000000000000000000000000000000 |
--- a/webrtc/base/numerics/exp_filter.cc |
+++ /dev/null |
@@ -1,43 +0,0 @@ |
-/* |
- * Copyright (c) 2011 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/numerics/exp_filter.h" |
- |
-#include <math.h> |
- |
-namespace rtc { |
- |
-const float ExpFilter::kValueUndefined = -1.0f; |
- |
-void ExpFilter::Reset(float alpha) { |
- alpha_ = alpha; |
- filtered_ = kValueUndefined; |
-} |
- |
-float ExpFilter::Apply(float exp, float sample) { |
- if (filtered_ == kValueUndefined) { |
- // Initialize filtered value. |
- filtered_ = sample; |
- } else if (exp == 1.0) { |
- filtered_ = alpha_ * filtered_ + (1 - alpha_) * sample; |
- } else { |
- float alpha = pow(alpha_, exp); |
- filtered_ = alpha * filtered_ + (1 - alpha) * sample; |
- } |
- if (max_ != kValueUndefined && filtered_ > max_) { |
- filtered_ = max_; |
- } |
- return filtered_; |
-} |
- |
-void ExpFilter::UpdateBase(float alpha) { |
- alpha_ = alpha; |
-} |
-} // namespace rtc |