1227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks/* 2227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks * Copyright (C) 2013 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 Hendrickspackage androidx.media.filterfw; 17227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks 18227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks/** 19227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks * A {@link Filter} that consumes frames and allows to register a listener to observe when 20227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks * a new frame has been consumed. 21227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks */ 22227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricksclass FrameTargetFilter extends Filter { 23227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks 24227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks interface Listener { 25227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks /** 26227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks * Called each time this filter receives a new frame. The implementer of this method is 27227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks * responsible for releasing the frame. 28227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks */ 29227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks void onFramePushed(String filterName, Frame frame); 30227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks } 31227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks 32227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks private Listener mListener; 33227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks 34227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks FrameTargetFilter(MffContext context, String name) { 35227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks super(context, name); 36227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks } 37227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks 38227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks @Override 39227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks public Signature getSignature() { 40227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks return new Signature() 41227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks .addInputPort("input", Signature.PORT_REQUIRED, FrameType.any()) 42227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks .disallowOtherPorts(); 43227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks } 44227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks 45227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks public synchronized void setListener(Listener listener) { 46227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks mListener = listener; 47227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks } 48227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks 49227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks @Override 50227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks protected synchronized void onProcess() { 51227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks Frame frame = getConnectedInputPort("input").pullFrame(); 52227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks if (mListener != null) { 53227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks frame.retain(); 54227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks mListener.onFramePushed(getName(), frame); 55227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks } 56227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks } 57227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks 58227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks} 59