1 files changed, 112 insertions, 0 deletions
diff --git a/src/com/android/gallery3d/filtershow/filters/ImageFilterCurves.java b/src/com/android/gallery3d/filtershow/filters/ImageFilterCurves.java
new file mode 100644
index 000000000..61b60d2e3
--- /dev/null
+++ b/src/com/android/gallery3d/filtershow/filters/ImageFilterCurves.java
@@ -0,0 +1,112 @@
+/*
+ * Copyright (C) 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.
+ */
+
+package com.android.gallery3d.filtershow.filters;
+
+import android.graphics.Bitmap;
+
+import com.android.gallery3d.filtershow.imageshow.Spline;
+
+public class ImageFilterCurves extends ImageFilter {
+
+    private static final String LOGTAG = "ImageFilterCurves";
+    FilterCurvesRepresentation mParameters = new FilterCurvesRepresentation();
+
+    @Override
+    public FilterRepresentation getDefaultRepresentation() {
+        return new FilterCurvesRepresentation();
+    }
+
+    @Override
+    public void useRepresentation(FilterRepresentation representation) {
+        FilterCurvesRepresentation parameters = (FilterCurvesRepresentation) representation;
+        mParameters = parameters;
+    }
+
+    public ImageFilterCurves() {
+        mName = "Curves";
+        reset();
+    }
+
+    public void populateArray(int[] array, int curveIndex) {
+        Spline spline = mParameters.getSpline(curveIndex);
+        if (spline == null) {
+            return;
+        }
+        float[] curve = spline.getAppliedCurve();
+        for (int i = 0; i < 256; i++) {
+            array[i] = (int) (curve[i] * 255);
+        }
+    }
+
+    @Override
+    public Bitmap apply(Bitmap bitmap, float scaleFactor, int quality) {
+        if (!mParameters.getSpline(Spline.RGB).isOriginal()) {
+            int[] rgbGradient = new int[256];
+            populateArray(rgbGradient, Spline.RGB);
+            nativeApplyGradientFilter(bitmap, bitmap.getWidth(), bitmap.getHeight(),
+                    rgbGradient, rgbGradient, rgbGradient);
+        }
+
+        int[] redGradient = null;
+        if (!mParameters.getSpline(Spline.RED).isOriginal()) {
+            redGradient = new int[256];
+            populateArray(redGradient, Spline.RED);
+        }
+        int[] greenGradient = null;
+        if (!mParameters.getSpline(Spline.GREEN).isOriginal()) {
+            greenGradient = new int[256];
+            populateArray(greenGradient, Spline.GREEN);
+        }
+        int[] blueGradient = null;
+        if (!mParameters.getSpline(Spline.BLUE).isOriginal()) {
+            blueGradient = new int[256];
+            populateArray(blueGradient, Spline.BLUE);
+        }
+
+        nativeApplyGradientFilter(bitmap, bitmap.getWidth(), bitmap.getHeight(),
+                redGradient, greenGradient, blueGradient);
+        return bitmap;
+    }
+
+    public void setSpline(Spline spline, int splineIndex) {
+        mParameters.setSpline(splineIndex, new Spline(spline));
+    }
+
+    public Spline getSpline(int splineIndex) {
+        return mParameters.getSpline(splineIndex);
+    }
+
+    public void reset() {
+        Spline spline = new Spline();
+
+        spline.addPoint(0.0f, 1.0f);
+        spline.addPoint(1.0f, 0.0f);
+
+        for (int i = 0; i < 4; i++) {
+            mParameters.setSpline(i, new Spline(spline));
+        }
+    }
+
+    public void useFilter(ImageFilter a) {
+        ImageFilterCurves c = (ImageFilterCurves) a;
+        for (int i = 0; i < 4; i++) {
+            if (c.mParameters.getSpline(i) != null) {
+                setSpline(c.mParameters.getSpline(i), i);
+            }
+        }
+    }
+}