ImageFilterEdge.java revision afa8ed9d46e760d4b0c0331cfcb4bb49ef6ba280 
1/*
2 * Copyright (C) 2012 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.android.gallery3d.filtershow.filters;
18
19import android.graphics.Bitmap;
20
21import com.android.gallery3d.R;
22
23public class ImageFilterEdge extends SimpleImageFilter {
24    private static final String SERIALIZATION_NAME = "EDGE";
25    public ImageFilterEdge() {
26        mName = "Edge";
27    }
28
29    public FilterRepresentation getDefaultRepresentation() {
30        FilterRepresentation representation = super.getDefaultRepresentation();
31        representation.setName("Edge");
32        representation.setSerializationName(SERIALIZATION_NAME);
33        representation.setFilterClass(ImageFilterEdge.class);
34        representation.setTextId(R.string.edge);
35        representation.setButtonId(R.id.edgeButton);
36        representation.setSupportsPartialRendering(true);
37        return representation;
38    }
39
40    native protected void nativeApplyFilter(Bitmap bitmap, int w, int h, float p);
41
42    @Override
43    public Bitmap apply(Bitmap bitmap, float scaleFactor, int quality) {
44        if (getParameters() == null) {
45            return bitmap;
46        }
47        int w = bitmap.getWidth();
48        int h = bitmap.getHeight();
49        float p = getParameters().getValue() + 101;
50        p = (float) p / 100;
51        nativeApplyFilter(bitmap, w, h, p);
52        return bitmap;
53    }
54}
55