1 /* 2 * Copyright (C) 2014 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 17 package com.android.camera.one.v2.initialization; 18 19 import java.util.concurrent.CancellationException; 20 import java.util.concurrent.ExecutionException; 21 import java.util.concurrent.Future; 22 23 import com.android.camera.one.v2.autofocus.ManualAutoFocus; 24 25 /** 26 * A {@link ManualAutoFocus} on which {@link #triggerFocusAndMeterAtPoint} may 27 * be called even if the underlying camera is not yet ready. 28 */ 29 class DeferredManualAutoFocus implements ManualAutoFocus { 30 private final Future<ManualAutoFocus> mManualAutoFocusFuture; 31 32 public DeferredManualAutoFocus(Future<ManualAutoFocus> manualAutoFocusFuture) { 33 mManualAutoFocusFuture = manualAutoFocusFuture; 34 } 35 36 @Override 37 public void triggerFocusAndMeterAtPoint(float nx, float ny) { 38 if (mManualAutoFocusFuture.isDone()) { 39 try { 40 ManualAutoFocus af = mManualAutoFocusFuture.get(); 41 af.triggerFocusAndMeterAtPoint(nx, ny); 42 } catch (InterruptedException | ExecutionException | CancellationException e) { 43 // If the {@link Future} is not ready, do nothing. 44 return; 45 } 46 } 47 } 48 } 49
