1 files changed, 0 insertions, 110 deletions
diff --git a/media/libstagefright/wifi-display/sink/LinearRegression.cpp b/media/libstagefright/wifi-display/sink/LinearRegression.cpp
deleted file mode 100644
index 8cfce37..0000000
--- a/media/libstagefright/wifi-display/sink/LinearRegression.cpp
+++ /dev/null
@@ -1,110 +0,0 @@
-/*
- * Copyright 2012, The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-//#define LOG_NDEBUG 0
-#define LOG_TAG "LinearRegression"
-#include <utils/Log.h>
-
-#include "LinearRegression.h"
-
-#include <math.h>
-#include <string.h>
-
-namespace android {
-
-LinearRegression::LinearRegression(size_t historySize)
-    : mHistorySize(historySize),
-      mCount(0),
-      mHistory(new Point[mHistorySize]),
-      mSumX(0.0),
-      mSumY(0.0) {
-}
-
-LinearRegression::~LinearRegression() {
-    delete[] mHistory;
-    mHistory = NULL;
-}
-
-void LinearRegression::addPoint(float x, float y) {
-    if (mCount == mHistorySize) {
-        const Point &oldest = mHistory[0];
-
-        mSumX -= oldest.mX;
-        mSumY -= oldest.mY;
-
-        memmove(&mHistory[0], &mHistory[1], (mHistorySize - 1) * sizeof(Point));
-        --mCount;
-    }
-
-    Point *newest = &mHistory[mCount++];
-    newest->mX = x;
-    newest->mY = y;
-
-    mSumX += x;
-    mSumY += y;
-}
-
-bool LinearRegression::approxLine(float *n1, float *n2, float *b) const {
-    static const float kEpsilon = 1.0E-4;
-
-    if (mCount < 2) {
-        return false;
-    }
-
-    float sumX2 = 0.0f;
-    float sumY2 = 0.0f;
-    float sumXY = 0.0f;
-
-    float meanX = mSumX / (float)mCount;
-    float meanY = mSumY / (float)mCount;
-
-    for (size_t i = 0; i < mCount; ++i) {
-        const Point &p = mHistory[i];
-
-        float x = p.mX - meanX;
-        float y = p.mY - meanY;
-
-        sumX2 += x * x;
-        sumY2 += y * y;
-        sumXY += x * y;
-    }
-
-    float T = sumX2 + sumY2;
-    float D = sumX2 * sumY2 - sumXY * sumXY;
-    float root = sqrt(T * T * 0.25 - D);
-
-    float L1 = T * 0.5 - root;
-
-    if (fabs(sumXY) > kEpsilon) {
-        *n1 = 1.0;
-        *n2 = (2.0 * L1 - sumX2) / sumXY;
-
-        float mag = sqrt((*n1) * (*n1) + (*n2) * (*n2));
-
-        *n1 /= mag;
-        *n2 /= mag;
-    } else {
-        *n1 = 0.0;
-        *n2 = 1.0;
-    }
-
-    *b = (*n1) * meanX + (*n2) * meanY;
-
-    return true;
-}
-
-}  // namespace android
-