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 androidx.media.filterfw.*; 20227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks 21227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks// TODO: Rename back to ValueSource? Seems to make more sense even if we use it as a Variable 22227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks// in some contexts. 23227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendrickspublic final class VariableSource extends Filter { 24227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks 25227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks private Object mValue = null; 26227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks private OutputPort mOutputPort = null; 27227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks 28227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks public VariableSource(MffContext context, String name) { 29227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks super(context, name); 30227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks } 31227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks 32227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks public synchronized void setValue(Object value) { 33227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks mValue = value; 34227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks } 35227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks 36227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks public synchronized Object getValue() { 37227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks return mValue; 38227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks } 39227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks 40227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks @Override 41227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks public Signature getSignature() { 42227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks return new Signature() 43227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks .addOutputPort("value", Signature.PORT_REQUIRED, FrameType.single()) 44227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks .disallowOtherPorts(); 45227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks } 46227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks 47227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks @Override 48227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks protected void onPrepare() { 49227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks mOutputPort = getConnectedOutputPort("value"); 50227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks } 51227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks 52227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks @Override 53227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks protected synchronized void onProcess() { 54227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks FrameValue frame = mOutputPort.fetchAvailableFrame(null).asFrameValue(); 55227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks frame.setValue(mValue); 56227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks mOutputPort.pushFrame(frame); 57227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks } 58227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks 59227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks} 60227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks 61