Implement sharpen

bug:7279964
bug:7247494
bug:7234321

- add a sharpen filter
- add infrastructure to use RenderScript
- some refactoring (add an ImageSlave class)
- add new zoom UI

Change-Id: Id94dc94d32866c7107b6818adf4db35d0c6c0b01

1 files changed, 52 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..3ec7b5f70
--- /dev/null
+++ b/src/com/android/gallery3d/filtershow/filters/ImageFilterSharpen.java
@@ -0,0 +1,52 @@
+
+package com.android.gallery3d.filtershow.filters;
+
+import android.graphics.Bitmap;
+import android.util.Log;
+import android.renderscript.Element;
+import android.renderscript.Script;
+import android.renderscript.ScriptC;
+
+import com.android.gallery3d.R;
+
+public class ImageFilterSharpen extends ImageFilterRS {
+
+    private static final String LOGTAG = "ImageFilterSharpen";
+    private ScriptC_convolve3x3 mScript;
+
+    public ImageFilterSharpen() {
+        mName = "Sharpen";
+    }
+
+    public void createFilter(android.content.res.Resources res) {
+        int w = mInPixelsAllocation.getType().getX();
+        int h = mInPixelsAllocation.getType().getY();
+
+        float p1 = mParameter;
+        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;
+        if (mScript == null) {
+            mScript = new ScriptC_convolve3x3(getRenderScriptContext(), res, R.raw.convolve3x3);
+        }
+        mScript.set_gCoeffs(f);
+        mScript.set_gWidth(w);
+        mScript.set_gHeight(h);
+    }
+
+    public void runFilter() {
+        mScript.set_gIn(mInPixelsAllocation);
+        mScript.bind_gPixels(mInPixelsAllocation);
+        mScript.forEach_root(mInPixelsAllocation, mOutPixelsAllocation);
+    }
+
+}