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.photo; 18 19 import android.hardware.camera2.CameraDevice; 20 21 import com.android.camera.async.MainThread; 22 import com.android.camera.debug.Logger; 23 import com.android.camera.one.OneCamera; 24 import com.android.camera.one.v2.commands.CameraCommandExecutor; 25 import com.android.camera.one.v2.core.FrameServer; 26 import com.android.camera.one.v2.core.RequestBuilder; 27 import com.android.camera.one.v2.imagesaver.ImageSaver; 28 import com.android.camera.one.v2.sharedimagereader.ManagedImageReader; 29 import com.google.common.base.Supplier; 30 31 import java.util.Arrays; 32 33 public final class PictureTakerFactory { 34 private final PictureTakerImpl mPictureTaker; 35 36 private PictureTakerFactory(PictureTakerImpl pictureTaker) { 37 mPictureTaker = pictureTaker; 38 } 39 40 public static PictureTakerFactory create(Logger.Factory logFactory, MainThread mainExecutor, 41 CameraCommandExecutor commandExecutor, 42 ImageSaver.Builder imageSaverBuilder, 43 FrameServer frameServer, 44 RequestBuilder.Factory rootRequestBuilder, 45 ManagedImageReader sharedImageReader, 46 Supplier<OneCamera.PhotoCaptureParameters.Flash> flashMode) { 47 // When flash is ON, always use the ConvergedImageCaptureCommand which 48 // performs the AF & AE precapture sequence. 49 ImageCaptureCommand flashOnCommand = new ConvergedImageCaptureCommand( 50 sharedImageReader, frameServer, rootRequestBuilder, 51 CameraDevice.TEMPLATE_ZERO_SHUTTER_LAG, CameraDevice.TEMPLATE_ZERO_SHUTTER_LAG, 52 Arrays.asList(rootRequestBuilder), true /* ae */, true /* af */); 53 54 // When flash is OFF, wait for AF convergence, but not AE convergence 55 // (which can be very slow). 56 ImageCaptureCommand flashOffCommand = new ConvergedImageCaptureCommand( 57 sharedImageReader, frameServer, rootRequestBuilder, 58 CameraDevice.TEMPLATE_ZERO_SHUTTER_LAG, CameraDevice.TEMPLATE_ZERO_SHUTTER_LAG, 59 Arrays.asList(rootRequestBuilder), false /* ae */, true /* af */); 60 61 // When flash is AUTO, wait for AF & AE. 62 // TODO OPTIMIZE If the last converged-AE state indicates that flash is 63 // not necessary, then this could skip waiting for AE convergence. 64 ImageCaptureCommand flashAutoCommand = new ConvergedImageCaptureCommand( 65 sharedImageReader, frameServer, rootRequestBuilder, 66 CameraDevice.TEMPLATE_ZERO_SHUTTER_LAG, CameraDevice.TEMPLATE_ZERO_SHUTTER_LAG, 67 Arrays.asList(rootRequestBuilder), true /* ae */, true /* af */); 68 69 ImageCaptureCommand flashBasedCommand = new FlashBasedPhotoCommand(logFactory, flashMode, 70 flashOnCommand, flashAutoCommand, flashOffCommand); 71 return new PictureTakerFactory(new PictureTakerImpl(mainExecutor, commandExecutor, 72 imageSaverBuilder, flashBasedCommand)); 73 } 74 75 public PictureTaker providePictureTaker() { 76 return mPictureTaker; 77 } 78 } 79
