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 android.hardware.camera2.CaptureResult; 20 21 import com.android.camera.async.Updatable; 22 import com.android.camera.one.OneCamera; 23 import com.android.camera.one.v2.camera2proxy.TotalCaptureResultProxy; 24 25 import java.util.HashSet; 26 import java.util.Set; 27 28 import javax.annotation.Nonnull; 29 30 /** 31 * Distributes metadata to more-specific callbacks. 32 */ 33 public class MetadataCallback implements Updatable<TotalCaptureResultProxy> { 34 private final Updatable<Integer> mFocusState; 35 private final Updatable<OneCamera.FocusState> mOneCameraFocusState; 36 private final Updatable<Integer> mFocusMode; 37 MetadataCallback( Updatable<Integer> focusState, Updatable<OneCamera.FocusState> oneCameraFocusState, Updatable<Integer> focusMode)38 public MetadataCallback( 39 Updatable<Integer> focusState, 40 Updatable<OneCamera.FocusState> oneCameraFocusState, 41 Updatable<Integer> focusMode) { 42 mFocusState = focusState; 43 mOneCameraFocusState = oneCameraFocusState; 44 mFocusMode = focusMode; 45 } 46 47 @Override update(@onnull TotalCaptureResultProxy totalCaptureResult)48 public void update(@Nonnull TotalCaptureResultProxy totalCaptureResult) { 49 updateFocusMode(totalCaptureResult); 50 updateFocusState(totalCaptureResult); 51 updateOneCameraFocusState(totalCaptureResult); 52 } 53 updateFocusMode(TotalCaptureResultProxy totalCaptureResult)54 private void updateFocusMode(TotalCaptureResultProxy totalCaptureResult) { 55 Integer focusMode = totalCaptureResult.get(CaptureResult.CONTROL_AF_MODE); 56 if (focusMode != null) { 57 mFocusMode.update(focusMode); 58 } 59 } 60 updateFocusState(TotalCaptureResultProxy totalCaptureResult)61 private void updateFocusState(TotalCaptureResultProxy totalCaptureResult) { 62 Integer focusState = totalCaptureResult.get(CaptureResult.CONTROL_AF_STATE); 63 if (focusState != null) { 64 mFocusState.update(focusState); 65 } 66 } 67 updateOneCameraFocusState(TotalCaptureResultProxy totalCaptureResult)68 private void updateOneCameraFocusState(TotalCaptureResultProxy totalCaptureResult) { 69 Float focusDistance = totalCaptureResult.get(CaptureResult.LENS_FOCUS_DISTANCE); 70 Integer focusState = totalCaptureResult.get(CaptureResult.CONTROL_AF_STATE); 71 if (focusDistance != null && focusState != null) { 72 Set<Integer> activeStates = new HashSet<>(); 73 activeStates.add(CaptureResult.CONTROL_AF_STATE_ACTIVE_SCAN); 74 activeStates.add(CaptureResult.CONTROL_AF_STATE_PASSIVE_SCAN); 75 boolean active = activeStates.contains(focusState); 76 mOneCameraFocusState.update(new OneCamera.FocusState(focusDistance, active)); 77 } 78 } 79 } 80