1227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks/* 2227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks * Copyright (C) 2011 The Android Open Source Project 3227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks * 4227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks * Licensed under the Apache License, Version 2.0 (the "License"); 5227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks * you may not use this file except in compliance with the License. 6227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks * You may obtain a copy of the License at 7227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks * 8227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks * http://www.apache.org/licenses/LICENSE-2.0 9227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks * 10227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks * Unless required by applicable law or agreed to in writing, software 11227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks * distributed under the License is distributed on an "AS IS" BASIS, 12227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks * See the License for the specific language governing permissions and 14227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks * limitations under the License. 15227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks */ 16227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks 17227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendrickspackage androidx.media.filterpacks.base; 18227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks 19227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricksimport android.os.Handler; 20227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricksimport android.os.Looper; 21227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks 22227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricksimport androidx.media.filterfw.*; 23227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks 24227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendrickspublic final class ValueTarget extends Filter { 25227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks 26227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks public static interface ValueListener { 27227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks public void onReceivedValue(Object value); 28227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks } 29227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks 30227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks private ValueListener mListener = null; 31227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks private Handler mHandler = null; 32227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks 33227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks public ValueTarget(MffContext context, String name) { 34227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks super(context, name); 35227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks } 36227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks 37227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks public void setListener(ValueListener listener, boolean onCallerThread) { 38227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks if (isRunning()) { 39227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks throw new IllegalStateException("Attempting to bind filter to callback while it is " 40227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks + "running!"); 41227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks } 42227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks mListener = listener; 43227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks if (onCallerThread) { 44227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks if (Looper.myLooper() == null) { 45227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks throw new IllegalArgumentException("Attempting to set callback on thread which " 46227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks + "has no looper!"); 47227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks } 48227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks mHandler = new Handler(); 49227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks } 50227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks } 51227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks 52227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks @Override 53227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks public Signature getSignature() { 54227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks return new Signature() 55227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks .addInputPort("value", Signature.PORT_REQUIRED, FrameType.single()) 56227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks .disallowOtherPorts(); 57227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks } 58227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks 59227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks @Override 60227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks protected void onProcess() { 61227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks FrameValue valueFrame = getConnectedInputPort("value").pullFrame().asFrameValue(); 62227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks if (mListener != null) { 63227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks if (mHandler != null) { 64227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks postValueToUiThread(valueFrame.getValue()); 65227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks } else { 66227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks mListener.onReceivedValue(valueFrame.getValue()); 67227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks } 68227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks } 69227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks } 70227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks 71227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks private void postValueToUiThread(final Object value) { 72227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks mHandler.post(new Runnable() { 73227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks @Override 74227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks public void run() { 75227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks mListener.onReceivedValue(value); 76227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks } 77227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks }); 78227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks } 79227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks 80227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks} 81227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks 82