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      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 
     17 package android.media.effect;
     18 
     19 import android.filterfw.core.Frame;
     20 import 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  */
     29 public 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