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.CameraAccessException; 20 21 import com.android.camera.app.OrientationManager; 22 import com.android.camera.async.MainThread; 23 import com.android.camera.async.Updatable; 24 import com.android.camera.one.OneCamera; 25 import com.android.camera.one.v2.camera2proxy.CameraCaptureSessionClosedException; 26 import com.android.camera.one.v2.commands.CameraCommand; 27 import com.android.camera.one.v2.commands.CameraCommandExecutor; 28 import com.android.camera.one.v2.core.ResourceAcquisitionFailedException; 29 import com.android.camera.one.v2.imagesaver.ImageSaver; 30 import com.android.camera.session.CaptureSession; 31 import com.google.common.base.Objects; 32 33 class PictureTakerImpl implements PictureTaker { 34 private final MainThread mMainExecutor; 35 private final CameraCommandExecutor mCameraCommandExecutor; 36 private final ImageSaver.Builder mImageSaverBuilder; 37 private final ImageCaptureCommand mCommand; 38 PictureTakerImpl(MainThread mainExecutor, CameraCommandExecutor cameraCommandExecutor, ImageSaver.Builder imageSaverBuilder, ImageCaptureCommand command)39 public PictureTakerImpl(MainThread mainExecutor, CameraCommandExecutor cameraCommandExecutor, 40 ImageSaver.Builder imageSaverBuilder, ImageCaptureCommand command) { 41 mMainExecutor = mainExecutor; 42 mCameraCommandExecutor = cameraCommandExecutor; 43 mImageSaverBuilder = imageSaverBuilder; 44 mCommand = command; 45 } 46 47 private final class PictureTakerCommand implements CameraCommand { 48 private final Updatable<Void> mImageExposureCallback; 49 private final ImageSaver mImageSaver; 50 private final CaptureSession mSession; 51 PictureTakerCommand(Updatable<Void> imageExposureCallback, ImageSaver imageSaver, CaptureSession session)52 private PictureTakerCommand(Updatable<Void> imageExposureCallback, 53 ImageSaver imageSaver, 54 CaptureSession session) { 55 mImageExposureCallback = imageExposureCallback; 56 mImageSaver = imageSaver; 57 mSession = session; 58 } 59 60 @Override run()61 public void run() throws InterruptedException, CameraAccessException, 62 CameraCaptureSessionClosedException, ResourceAcquisitionFailedException { 63 try { 64 mCommand.run(mImageExposureCallback, mImageSaver); 65 } catch (Exception e) { 66 mSession.cancel(); 67 throw e; 68 } 69 } 70 71 @Override toString()72 public String toString() { 73 return Objects.toStringHelper(this) 74 .add("command", mCommand) 75 .toString(); 76 } 77 } 78 79 @Override takePicture(OneCamera.PhotoCaptureParameters params, final CaptureSession session)80 public void takePicture(OneCamera.PhotoCaptureParameters params, final CaptureSession session) { 81 OneCamera.PictureCallback pictureCallback = params.callback; 82 83 // Wrap the pictureCallback with a thread-safe adapter which guarantees 84 // that they are always invoked on the main thread. 85 PictureCallbackAdapter pictureCallbackAdapter = 86 new PictureCallbackAdapter(pictureCallback, mMainExecutor); 87 88 final Updatable<Void> imageExposureCallback = 89 pictureCallbackAdapter.provideQuickExposeUpdatable(); 90 91 final ImageSaver imageSaver = mImageSaverBuilder.build( 92 params.saverCallback, 93 OrientationManager.DeviceOrientation.from(params.orientation), 94 session); 95 96 mCameraCommandExecutor.execute(new PictureTakerCommand( 97 imageExposureCallback, imageSaver, session)); 98 } 99 } 100