1227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks/* 2227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks * Copyright (C) 2012 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.filterfw.samples.simplecamera; 18227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks 19227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricksimport androidx.media.filterfw.Filter; 20227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricksimport androidx.media.filterfw.FrameType; 21227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricksimport androidx.media.filterfw.FrameValue; 22227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricksimport androidx.media.filterfw.InputPort; 23227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricksimport androidx.media.filterfw.MffContext; 24227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricksimport androidx.media.filterfw.OutputPort; 25227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricksimport androidx.media.filterfw.Signature; 26227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks 27227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks// The Filter is used to generate the camera snap effect. 28227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks// The effect is to give the image a sudden white appearance. 29227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendrickspublic final class WaveTriggerFilter extends Filter { 30227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks 31227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks private boolean mTrigger = false; 32227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks private boolean mInWaveMode = false; 33227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks private float mTime = 0f; 34227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks 35227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks public WaveTriggerFilter(MffContext context, String name) { 36227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks super(context, name); 37227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks } 38227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks 39227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks @Override 40227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks public Signature getSignature() { 41227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks return new Signature() 42227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks .addOutputPort("value", Signature.PORT_REQUIRED, FrameType.single()) 43227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks .disallowOtherPorts(); 44227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks } 45227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks 46227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks public synchronized void trigger() { 47227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks mTrigger = true; 48227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks } 49227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks 50227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks @Override 51227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks public void onInputPortOpen(InputPort port) { 52227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks if (port.getName().equals("trigger")) { 53227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks port.bindToFieldNamed("mTrigger"); 54227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks port.setAutoPullEnabled(true); 55227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks } 56227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks } 57227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks 58227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks @Override 59227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks protected synchronized void onProcess() { 60227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks // Check if we were triggered 61227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks if (mTrigger) { 62227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks mInWaveMode = true; 63227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks mTrigger = false; 64227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks mTime = 0.5f; 65227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks } 66227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks 67227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks // Calculate output value 68227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks float value = 0.5f; 69227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks if (mInWaveMode) { 70227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks value = -Math.abs(mTime - 1f) + 1f; 71227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks mTime += 0.2f; 72227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks if (mTime >= 2f) { 73227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks mInWaveMode = false; 74227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks } 75227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks } 76227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks 77227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks // Push Value 78227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks OutputPort outPort = getConnectedOutputPort("value"); 79227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks FrameValue frame = outPort.fetchAvailableFrame(null).asFrameValue(); 80227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks frame.setValue(value); 81227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks outPort.pushFrame(frame); 82227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks } 83227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks} 84