1 files changed, 107 insertions, 0 deletions
diff --git a/src/com/android/gallery3d/filtershow/filters/ImageFilterSharpen.java b/src/com/android/gallery3d/filtershow/filters/ImageFilterSharpen.java
new file mode 100644
index 000000000..3bd794464
--- /dev/null
+++ b/src/com/android/gallery3d/filtershow/filters/ImageFilterSharpen.java
@@ -0,0 +1,107 @@
+/*
+ * 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 com.android.gallery3d.R;
+
+public class ImageFilterSharpen extends ImageFilterRS {
+    private static final String SERIALIZATION_NAME = "SHARPEN";
+    private static final String LOGTAG = "ImageFilterSharpen";
+    private ScriptC_convolve3x3 mScript;
+
+    private FilterBasicRepresentation mParameters;
+
+    public ImageFilterSharpen() {
+        mName = "Sharpen";
+    }
+
+    public FilterRepresentation getDefaultRepresentation() {
+        FilterRepresentation representation = new FilterBasicRepresentation("Sharpen", 0, 0, 100);
+        representation.setSerializationName(SERIALIZATION_NAME);
+        representation.setShowParameterValue(true);
+        representation.setFilterClass(ImageFilterSharpen.class);
+        representation.setTextId(R.string.sharpness);
+        representation.setOverlayId(R.drawable.filtershow_button_colors_sharpen);
+        representation.setEditorId(R.id.imageShow);
+        representation.setSupportsPartialRendering(true);
+        return representation;
+    }
+
+    public void useRepresentation(FilterRepresentation representation) {
+        FilterBasicRepresentation parameters = (FilterBasicRepresentation) representation;
+        mParameters = parameters;
+    }
+
+    @Override
+    protected void resetAllocations() {
+        // nothing to do
+    }
+
+    @Override
+    public void resetScripts() {
+        if (mScript != null) {
+            mScript.destroy();
+            mScript = null;
+        }
+    }
+
+    @Override
+    protected void createFilter(android.content.res.Resources res, float scaleFactor,
+            int quality) {
+        if (mScript == null) {
+            mScript = new ScriptC_convolve3x3(getRenderScriptContext(), res, R.raw.convolve3x3);
+        }
+    }
+
+    private void computeKernel() {
+        float scaleFactor = getEnvironment().getScaleFactor();
+        float p1 = mParameters.getValue() * scaleFactor;
+        float value = p1 / 100.0f;
+        float f[] = new float[9];
+        float p = value;
+        f[0] = -p;
+        f[1] = -p;
+        f[2] = -p;
+        f[3] = -p;
+        f[4] = 8 * p + 1;
+        f[5] = -p;
+        f[6] = -p;
+        f[7] = -p;
+        f[8] = -p;
+        mScript.set_gCoeffs(f);
+    }
+
+    @Override
+    protected void bindScriptValues() {
+        int w = getInPixelsAllocation().getType().getX();
+        int h = getInPixelsAllocation().getType().getY();
+        mScript.set_gWidth(w);
+        mScript.set_gHeight(h);
+    }
+
+    @Override
+    protected void runFilter() {
+        if (mParameters == null) {
+            return;
+        }
+        computeKernel();
+        mScript.set_gIn(getInPixelsAllocation());
+        mScript.bind_gPixels(getInPixelsAllocation());
+        mScript.forEach_root(getInPixelsAllocation(), getOutPixelsAllocation());
+    }
+
+}