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.autofocus; 18 19 import android.hardware.camera2.CameraAccessException; 20 21 import com.android.camera.async.ResettingDelayedExecutor; 22 import com.android.camera.async.Updatable; 23 import com.android.camera.one.v2.camera2proxy.CameraCaptureSessionClosedException; 24 import com.android.camera.one.v2.commands.CameraCommand; 25 import com.android.camera.one.v2.core.ResourceAcquisitionFailedException; 26 27 /** 28 * Performs a full Auto Focus scan, holds for a period of time, and then resets 29 * the preview. 30 */ 31 class AFScanHoldResetCommand implements CameraCommand { 32 private final CameraCommand mAFScanCommand; 33 private final ResettingDelayedExecutor mDelayedExecutor; 34 private final Runnable mPreviewRunnable; 35 private final Updatable<MeteringParameters> mMeteringParametersUpdatable; 36 37 public AFScanHoldResetCommand(CameraCommand afScanCommand, 38 ResettingDelayedExecutor delayedExecutor, 39 Runnable previewRunnable, 40 Updatable<MeteringParameters> meteringParametersUpdatable) { 41 mAFScanCommand = afScanCommand; 42 mDelayedExecutor = delayedExecutor; 43 mPreviewRunnable = previewRunnable; 44 mMeteringParametersUpdatable = meteringParametersUpdatable; 45 } 46 47 @Override 48 public void run() throws CameraAccessException, InterruptedException, 49 CameraCaptureSessionClosedException, ResourceAcquisitionFailedException { 50 // Reset any delayed preview-restart which may be pending execution as a 51 // result of a previous tap-to-focus. 52 mDelayedExecutor.reset(); 53 mAFScanCommand.run(); 54 mDelayedExecutor.execute(new Runnable() { 55 public void run() { 56 // Reset metering regions and restart the preview. 57 mMeteringParametersUpdatable.update(GlobalMeteringParameters.create()); 58 mPreviewRunnable.run(); 59 } 60 }); 61 } 62 } 63
