Index: third_party/WebKit/Source/platform/audio/Distance.cpp |
diff --git a/third_party/WebKit/Source/platform/audio/Distance.cpp b/third_party/WebKit/Source/platform/audio/Distance.cpp |
deleted file mode 100644 |
index 1984eb7dcb3e89dafc5e5e2cf46da2ee4299ac0d..0000000000000000000000000000000000000000 |
--- a/third_party/WebKit/Source/platform/audio/Distance.cpp |
+++ /dev/null |
@@ -1,93 +0,0 @@ |
-/* |
- * Copyright (C) 2010 Google Inc. All rights reserved. |
- * |
- * Redistribution and use in source and binary forms, with or without |
- * modification, are permitted provided that the following conditions |
- * are met: |
- * |
- * 1. Redistributions of source code must retain the above copyright |
- * notice, this list of conditions and the following disclaimer. |
- * 2. Redistributions in binary form must reproduce the above copyright |
- * notice, this list of conditions and the following disclaimer in the |
- * documentation and/or other materials provided with the distribution. |
- * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of |
- * its contributors may be used to endorse or promote products derived |
- * from this software without specific prior written permission. |
- * |
- * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY |
- * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
- * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY |
- * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
- */ |
- |
-#include "platform/audio/Distance.h" |
- |
-#include <math.h> |
-#include <algorithm> |
-#include "platform/wtf/Assertions.h" |
-#include "platform/wtf/MathExtras.h" |
- |
-namespace blink { |
- |
-DistanceEffect::DistanceEffect() |
- : model_(kModelInverse), |
- ref_distance_(1.0), |
- max_distance_(10000.0), |
- rolloff_factor_(1.0) {} |
- |
-double DistanceEffect::Gain(double distance) { |
- switch (model_) { |
- case kModelLinear: |
- return LinearGain(distance); |
- case kModelInverse: |
- return InverseGain(distance); |
- case kModelExponential: |
- return ExponentialGain(distance); |
- } |
- NOTREACHED(); |
- return 0.0; |
-} |
- |
-double DistanceEffect::LinearGain(double distance) { |
- // Clamp refDistance and distance according to the spec. |
- double dref = std::min(ref_distance_, max_distance_); |
- double dmax = std::max(ref_distance_, max_distance_); |
- distance = clampTo(distance, dref, dmax); |
- |
- if (dref == dmax) |
- return 1 - rolloff_factor_; |
- |
- // We want a gain that decreases linearly from m_refDistance to |
- // m_maxDistance. The gain is 1 at m_refDistance. |
- return (1.0 - clampTo(rolloff_factor_, 0.0, 1.0) * (distance - dref) / |
- (dmax - dref)); |
-} |
- |
-double DistanceEffect::InverseGain(double distance) { |
- if (ref_distance_ == 0) |
- return 0; |
- |
- // Clamp distance according to spec |
- distance = clampTo(distance, ref_distance_); |
- |
- return ref_distance_ / (ref_distance_ + clampTo(rolloff_factor_, 0.0) * |
- (distance - ref_distance_)); |
-} |
- |
-double DistanceEffect::ExponentialGain(double distance) { |
- if (ref_distance_ == 0) |
- return 0; |
- |
- // Clamp distance according to spec |
- distance = clampTo(distance, ref_distance_); |
- |
- return pow(distance / ref_distance_, -clampTo(rolloff_factor_, 0.0)); |
-} |
- |
-} // namespace blink |