1/*
2 * Copyright (C) 2011 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 android.media.effect;
18
19import android.filterfw.core.Frame;
20import android.media.effect.EffectContext;
21
22/**
23 * Effect subclass for effects based on a single Filter with output size differnet
24 * from input.  Subclasses need only invoke the constructor with the correct arguments
25 * to obtain an Effect implementation.
26 *
27 * @hide
28 */
29public class SizeChangeEffect extends SingleFilterEffect {
30
31    public SizeChangeEffect(EffectContext context,
32                            String name,
33                            Class filterClass,
34                            String inputName,
35                            String outputName,
36                            Object... finalParameters) {
37        super(context, name, filterClass, inputName, outputName, finalParameters);
38    }
39
40    @Override
41    public void apply(int inputTexId, int width, int height, int outputTexId) {
42        beginGLEffect();
43
44        Frame inputFrame = frameFromTexture(inputTexId, width, height);
45        Frame resultFrame = mFunction.executeWithArgList(mInputName, inputFrame);
46
47        int outputWidth = resultFrame.getFormat().getWidth();
48        int outputHeight = resultFrame.getFormat().getHeight();
49
50        Frame outputFrame = frameFromTexture(outputTexId, outputWidth, outputHeight);
51        outputFrame.setDataFromFrame(resultFrame);
52
53        inputFrame.release();
54        outputFrame.release();
55        resultFrame.release();
56
57        endGLEffect();
58    }
59}
60