Index: third_party/WebKit/Source/platform/audio/DynamicsCompressorKernel.cpp |
diff --git a/third_party/WebKit/Source/platform/audio/DynamicsCompressorKernel.cpp b/third_party/WebKit/Source/platform/audio/DynamicsCompressorKernel.cpp |
index b14075a23747d9df27e0bace6ba3c5c09da91539..81fab59cd3ae35981e28b1aed9b22539b0f06e7b 100644 |
--- a/third_party/WebKit/Source/platform/audio/DynamicsCompressorKernel.cpp |
+++ b/third_party/WebKit/Source/platform/audio/DynamicsCompressorKernel.cpp |
@@ -55,7 +55,7 @@ DynamicsCompressorKernel::DynamicsCompressorKernel(float sampleRate, unsigned nu |
, m_kneeThreshold(uninitializedValue) |
, m_kneeThresholdDb(uninitializedValue) |
, m_ykneeThresholdDb(uninitializedValue) |
- , m_K(uninitializedValue) |
+ , m_knee(uninitializedValue) |
{ |
setNumberOfChannels(numberOfChannels); |
@@ -190,9 +190,9 @@ float DynamicsCompressorKernel::updateStaticCurveParameters(float dbThreshold, f |
m_ykneeThresholdDb = linearToDecibels(kneeCurve(m_kneeThreshold, k)); |
- m_K = k; |
+ m_knee = k; |
} |
- return m_K; |
+ return m_knee; |
} |
void DynamicsCompressorKernel::process(const float* sourceChannels[], |
@@ -256,11 +256,11 @@ void DynamicsCompressorKernel::process(const float* sourceChannels[], |
// All of these coefficients were derived for 4th order polynomial curve fitting where the y values |
// match the evenly spaced x values as follows: (y1 : x == 0, y2 : x == 1, y3 : x == 2, y4 : x == 3) |
- float kA = 0.9999999999999998f*y1 + 1.8432219684323923e-16f*y2 - 1.9373394351676423e-16f*y3 + 8.824516011816245e-18f*y4; |
- float kB = -1.5788320352845888f*y1 + 2.3305837032074286f*y2 - 0.9141194204840429f*y3 + 0.1623677525612032f*y4; |
- float kC = 0.5334142869106424f*y1 - 1.272736789213631f*y2 + 0.9258856042207512f*y3 - 0.18656310191776226f*y4; |
- float kD = 0.08783463138207234f*y1 - 0.1694162967925622f*y2 + 0.08588057951595272f*y3 - 0.00429891410546283f*y4; |
- float kE = -0.042416883008123074f*y1 + 0.1115693827987602f*y2 - 0.09764676325265872f*y3 + 0.028494263462021576f*y4; |
+ float a = 0.9999999999999998f * y1 + 1.8432219684323923e-16f * y2 - 1.9373394351676423e-16f * y3 + 8.824516011816245e-18f * y4; |
+ float b = -1.5788320352845888f * y1 + 2.3305837032074286f * y2 - 0.9141194204840429f * y3 + 0.1623677525612032f * y4; |
+ float c = 0.5334142869106424f * y1 - 1.272736789213631f * y2 + 0.9258856042207512f * y3 - 0.18656310191776226f * y4; |
+ float d = 0.08783463138207234f * y1 - 0.1694162967925622f * y2 + 0.08588057951595272f * y3 - 0.00429891410546283f * y4; |
+ float e = -0.042416883008123074f * y1 + 0.1115693827987602f * y2 - 0.09764676325265872f * y3 + 0.028494263462021576f * y4; |
// x ranges from 0 -> 3 0 1 2 3 |
// -15 -10 -5 0db |
@@ -325,7 +325,7 @@ void DynamicsCompressorKernel::process(const float* sourceChannels[], |
float x2 = x * x; |
float x3 = x2 * x; |
float x4 = x2 * x2; |
- float releaseFrames = kA + kB * x + kC * x2 + kD * x3 + kE * x4; |
+ float releaseFrames = a + b * x + c * x2 + d * x3 + e * x4; |
#define kSpacingDb 5 |
float dbPerFrame = kSpacingDb / releaseFrames; |