1 /* 2 * Copyright 2013 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 // Takes in an array, returns the size of the array 17 18 package androidx.media.filterfw.samples.simplecamera; 19 20 import android.util.Log; 21 import androidx.media.filterfw.Filter; 22 import androidx.media.filterfw.FrameType; 23 import androidx.media.filterfw.FrameValue; 24 import androidx.media.filterfw.MffContext; 25 import androidx.media.filterfw.OutputPort; 26 import androidx.media.filterfw.Signature; 27 28 import java.lang.reflect.Array; 29 30 public class FloatArrayToSizeFilter extends Filter { 31 32 private static final String TAG = "FloatArrayToSizeFilter"; 33 private static boolean mLogVerbose = Log.isLoggable(TAG, Log.VERBOSE); 34 /** 35 * @param context 36 * @param name 37 */ 38 public FloatArrayToSizeFilter(MffContext context, String name) { 39 super(context, name); 40 } 41 42 @Override 43 public Signature getSignature() { 44 FrameType intT = FrameType.single(int.class); 45 FrameType floatType = FrameType.array(float.class); 46 47 return new Signature() 48 .addInputPort("array", Signature.PORT_REQUIRED, floatType) 49 .addOutputPort("size", Signature.PORT_REQUIRED, intT) 50 .disallowOtherPorts(); 51 } 52 53 /** 54 * @see androidx.media.filterfw.Filter#onProcess() 55 */ 56 @Override 57 protected void onProcess() { 58 FrameValue arrayFrame = getConnectedInputPort("array").pullFrame().asFrameValues(); 59 Object array = arrayFrame.getValue(); 60 int size = Array.getLength(array); 61 62 OutputPort outPort = getConnectedOutputPort("size"); 63 FrameValue sizeFrame = outPort.fetchAvailableFrame(null).asFrameValue(); 64 sizeFrame.setValue(size); 65 outPort.pushFrame(sizeFrame); 66 67 } 68 } 69
