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 com.android.gallery3d.R;
20
21import android.graphics.Bitmap;
22
23public class ImageFilterExposure extends SimpleImageFilter {
24    private static final String SERIALIZATION_NAME = "EXPOSURE";
25    public ImageFilterExposure() {
26        mName = "Exposure";
27    }
28
29    public FilterRepresentation getDefaultRepresentation() {
30        FilterBasicRepresentation representation =
31                (FilterBasicRepresentation) super.getDefaultRepresentation();
32        representation.setName("Exposure");
33        representation.setSerializationName(SERIALIZATION_NAME);
34        representation.setFilterClass(ImageFilterExposure.class);
35        representation.setTextId(R.string.exposure);
36        representation.setMinimum(-100);
37        representation.setMaximum(100);
38        representation.setDefaultValue(0);
39        representation.setSupportsPartialRendering(true);
40        return representation;
41    }
42
43    native protected void nativeApplyFilter(Bitmap bitmap, int w, int h, float bright);
44
45    @Override
46    public Bitmap apply(Bitmap bitmap, float scaleFactor, int quality) {
47        if (getParameters() == null) {
48            return bitmap;
49        }
50        int w = bitmap.getWidth();
51        int h = bitmap.getHeight();
52        float value = getParameters().getValue();
53        nativeApplyFilter(bitmap, w, h, value);
54        return bitmap;
55    }
56}
57