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1906 lines
73 KiB
Java
1906 lines
73 KiB
Java
/*
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* Copyright 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.xypower.mppreview;
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import android.Manifest;
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import android.app.Activity;
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import android.app.AlertDialog;
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import android.app.Dialog;
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import android.app.DialogFragment;
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import android.app.Fragment;
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import android.content.Context;
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import android.content.DialogInterface;
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import android.content.Intent;
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import android.content.pm.PackageManager;
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import android.content.res.Resources;
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import android.graphics.Bitmap;
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import android.graphics.BitmapFactory;
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import android.graphics.ImageFormat;
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import android.graphics.Matrix;
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import android.graphics.Point;
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import android.graphics.RectF;
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import android.graphics.SurfaceTexture;
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import android.graphics.drawable.Drawable;
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import android.hardware.SensorManager;
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import android.hardware.camera2.CameraAccessException;
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import android.hardware.camera2.CameraCaptureSession;
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import android.hardware.camera2.CameraCharacteristics;
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import android.hardware.camera2.CameraDevice;
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import android.hardware.camera2.CameraManager;
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import android.hardware.camera2.CameraMetadata;
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import android.hardware.camera2.CaptureFailure;
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import android.hardware.camera2.CaptureRequest;
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import android.hardware.camera2.CaptureResult;
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import android.hardware.camera2.DngCreator;
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import android.hardware.camera2.TotalCaptureResult;
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import android.hardware.camera2.params.StreamConfigurationMap;
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import android.media.Image;
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import android.media.ImageReader;
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import android.media.MediaScannerConnection;
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import android.net.Uri;
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import android.os.AsyncTask;
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import android.os.Bundle;
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import android.os.Environment;
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import android.os.Handler;
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import android.os.HandlerThread;
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import android.os.Looper;
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import android.os.Message;
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import android.os.SystemClock;
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import androidx.core.app.ActivityCompat;
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import android.text.TextUtils;
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import android.util.Log;
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import android.util.Size;
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import android.util.SparseIntArray;
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import android.view.LayoutInflater;
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import android.view.OrientationEventListener;
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import android.view.Surface;
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import android.view.TextureView;
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import android.view.View;
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import android.view.ViewGroup;
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import android.widget.ImageView;
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import android.widget.Switch;
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import android.widget.Toast;
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import java.io.File;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.io.OutputStream;
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import java.nio.ByteBuffer;
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import java.text.SimpleDateFormat;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.Collections;
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import java.util.Comparator;
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import java.util.Date;
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import java.util.List;
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import java.util.Locale;
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import java.util.Map;
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import java.util.TreeMap;
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import java.util.concurrent.Semaphore;
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import java.util.concurrent.TimeUnit;
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import java.util.concurrent.atomic.AtomicInteger;
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/**
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* A fragment that demonstrates use of the Camera2 API to capture RAW and JPEG photos.
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* <p/>
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* In this example, the lifecycle of a single request to take a photo is:
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* <ul>
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* <li>
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* The user presses the "Picture" button, resulting in a call to {@link #takePicture()}.
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* </li>
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* <li>
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* {@link #takePicture()} initiates a pre-capture sequence that triggers the camera's built-in
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* auto-focus, auto-exposure, and auto-white-balance algorithms (aka. "3A") to run.
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* </li>
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* <li>
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* When the pre-capture sequence has finished, a {@link CaptureRequest} with a monotonically
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* increasing request ID set by calls to {@link CaptureRequest.Builder#setTag(Object)} is sent to
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* the camera to begin the JPEG and RAW capture sequence, and an
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* {@link ImageSaver.ImageSaverBuilder} is stored for this request in the
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* {@link #mJpegResultQueue} and {@link #mRawResultQueue}.
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* </li>
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* <li>
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* As {@link CaptureResult}s and {@link Image}s become available via callbacks in a background
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* thread, a {@link ImageSaver.ImageSaverBuilder} is looked up by the request ID in
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* {@link #mJpegResultQueue} and {@link #mRawResultQueue} and updated.
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* </li>
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* <li>
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* When all of the necessary results to save an image are available, the an {@link ImageSaver} is
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* constructed by the {@link ImageSaver.ImageSaverBuilder} and passed to a separate background
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* thread to save to a file.
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* </li>
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* </ul>
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*/
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public class Camera2RawFragment extends Fragment
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implements View.OnClickListener {
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/**
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* Conversion from screen rotation to JPEG orientation.
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*/
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private static final SparseIntArray ORIENTATIONS = new SparseIntArray();
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static {
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ORIENTATIONS.append(Surface.ROTATION_0, 0);
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ORIENTATIONS.append(Surface.ROTATION_90, 90);
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ORIENTATIONS.append(Surface.ROTATION_180, 180);
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ORIENTATIONS.append(Surface.ROTATION_270, 270);
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}
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/**
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* Request code for camera permissions.
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*/
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private static final int REQUEST_CAMERA_PERMISSIONS = 1;
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/**
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* Permissions required to take a picture.
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*/
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private static final String[] CAMERA_PERMISSIONS = {
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Manifest.permission.CAMERA,
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Manifest.permission.READ_EXTERNAL_STORAGE,
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Manifest.permission.WRITE_EXTERNAL_STORAGE,
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};
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/**
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* Timeout for the pre-capture sequence.
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*/
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private static final long PRECAPTURE_TIMEOUT_MS = 1000;
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/**
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* Tolerance when comparing aspect ratios.
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*/
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private static final double ASPECT_RATIO_TOLERANCE = 0.005;
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/**
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* Max preview width that is guaranteed by Camera2 API
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*/
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private static final int MAX_PREVIEW_WIDTH = 1920;
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/**
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* Max preview height that is guaranteed by Camera2 API
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*/
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private static final int MAX_PREVIEW_HEIGHT = 1080;
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/**
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* Tag for the {@link Log}.
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*/
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private static final String TAG = "MpPreview";
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/**
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* Camera state: Device is closed.
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*/
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private static final int STATE_CLOSED = 0;
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/**
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* Camera state: Device is opened, but is not capturing.
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*/
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private static final int STATE_OPENED = 1;
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/**
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* Camera state: Showing camera preview.
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*/
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private static final int STATE_PREVIEW = 2;
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/**
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* Camera state: Waiting for 3A convergence before capturing a photo.
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*/
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private static final int STATE_WAITING_FOR_3A_CONVERGENCE = 3;
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/**
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* An {@link OrientationEventListener} used to determine when device rotation has occurred.
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* This is mainly necessary for when the device is rotated by 180 degrees, in which case
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* onCreate or onConfigurationChanged is not called as the view dimensions remain the same,
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* but the orientation of the has changed, and thus the preview rotation must be updated.
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*/
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private OrientationEventListener mOrientationListener;
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/**
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* {@link TextureView.SurfaceTextureListener} handles several lifecycle events of a
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* {@link TextureView}.
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*/
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private final TextureView.SurfaceTextureListener mSurfaceTextureListener
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= new TextureView.SurfaceTextureListener() {
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@Override
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public void onSurfaceTextureAvailable(SurfaceTexture texture, int width, int height) {
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configureTransform(width, height);
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}
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@Override
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public void onSurfaceTextureSizeChanged(SurfaceTexture texture, int width, int height) {
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configureTransform(width, height);
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}
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@Override
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public boolean onSurfaceTextureDestroyed(SurfaceTexture texture) {
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synchronized (mCameraStateLock) {
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mPreviewSize = null;
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}
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return true;
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}
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@Override
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public void onSurfaceTextureUpdated(SurfaceTexture texture) {
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}
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};
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/**
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* An {@link AutoFitTextureView} for camera preview.
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*/
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private AutoFitTextureView mTextureView;
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/**
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* An additional thread for running tasks that shouldn't block the UI. This is used for all
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* callbacks from the {@link CameraDevice} and {@link CameraCaptureSession}s.
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*/
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private HandlerThread mBackgroundThread;
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/**
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* A counter for tracking corresponding {@link CaptureRequest}s and {@link CaptureResult}s
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* across the {@link CameraCaptureSession} capture callbacks.
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*/
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private final AtomicInteger mRequestCounter = new AtomicInteger();
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/**
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* A {@link Semaphore} to prevent the app from exiting before closing the camera.
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*/
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private final Semaphore mCameraOpenCloseLock = new Semaphore(1);
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/**
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* A lock protecting camera state.
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*/
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private final Object mCameraStateLock = new Object();
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// *********************************************************************************************
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// State protected by mCameraStateLock.
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//
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// The following state is used across both the UI and background threads. Methods with "Locked"
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// in the name expect mCameraStateLock to be held while calling.
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/**
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* ID of the current {@link CameraDevice}.
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*/
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private String mCameraId;
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private boolean mHdr = false;
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/**
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* A {@link CameraCaptureSession } for camera preview.
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*/
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private CameraCaptureSession mCaptureSession;
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/**
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* A reference to the open {@link CameraDevice}.
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*/
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private CameraDevice mCameraDevice;
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/**
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* The {@link Size} of camera preview.
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*/
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private Size mPreviewSize;
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/**
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* The {@link CameraCharacteristics} for the currently configured camera device.
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*/
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private CameraCharacteristics mCharacteristics;
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/**
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* A {@link Handler} for running tasks in the background.
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*/
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private Handler mBackgroundHandler;
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/**
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* A reference counted holder wrapping the {@link ImageReader} that handles JPEG image
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* captures. This is used to allow us to clean up the {@link ImageReader} when all background
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* tasks using its {@link Image}s have completed.
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*/
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private RefCountedAutoCloseable<ImageReader> mJpegImageReader;
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/**
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* Whether or not the currently configured camera device is fixed-focus.
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*/
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private boolean mNoAFRun = false;
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/**
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* Number of pending user requests to capture a photo.
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*/
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private int mPendingUserCaptures = 0;
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/**
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* Request ID to {@link ImageSaver.ImageSaverBuilder} mapping for in-progress JPEG captures.
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*/
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private final TreeMap<Integer, ImageSaver.ImageSaverBuilder> mJpegResultQueue = new TreeMap<>();
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/**
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* {@link CaptureRequest.Builder} for the camera preview
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*/
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private CaptureRequest.Builder mPreviewRequestBuilder;
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/**
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* The state of the camera device.
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*
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* @see #mPreCaptureCallback
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*/
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private int mState = STATE_CLOSED;
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/**
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* Timer to use with pre-capture sequence to ensure a timely capture if 3A convergence is
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* taking too long.
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*/
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private long mCaptureTimer;
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//**********************************************************************************************
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/**
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* {@link CameraDevice.StateCallback} is called when the currently active {@link CameraDevice}
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* changes its state.
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*/
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private final CameraDevice.StateCallback mStateCallback = new CameraDevice.StateCallback() {
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@Override
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public void onOpened(CameraDevice cameraDevice) {
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// This method is called when the camera is opened. We start camera preview here if
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// the TextureView displaying this has been set up.
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synchronized (mCameraStateLock) {
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mState = STATE_OPENED;
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mCameraOpenCloseLock.release();
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mCameraDevice = cameraDevice;
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// Start the preview session if the TextureView has been set up already.
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if (mPreviewSize != null && mTextureView.isAvailable()) {
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createCameraPreviewSessionLocked();
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}
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}
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}
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@Override
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public void onDisconnected(CameraDevice cameraDevice) {
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synchronized (mCameraStateLock) {
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mState = STATE_CLOSED;
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mCameraOpenCloseLock.release();
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cameraDevice.close();
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mCameraDevice = null;
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}
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}
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@Override
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public void onError(CameraDevice cameraDevice, int error) {
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Log.e(TAG, "Received camera device error: " + error);
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synchronized (mCameraStateLock) {
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mState = STATE_CLOSED;
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mCameraOpenCloseLock.release();
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cameraDevice.close();
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mCameraDevice = null;
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}
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Activity activity = getActivity();
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if (null != activity) {
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activity.finish();
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}
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}
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};
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/**
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* This a callback object for the {@link ImageReader}. "onImageAvailable" will be called when a
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* JPEG image is ready to be saved.
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*/
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private final ImageReader.OnImageAvailableListener mOnJpegImageAvailableListener
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= new ImageReader.OnImageAvailableListener() {
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@Override
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public void onImageAvailable(ImageReader reader) {
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dequeueAndSaveImage(mJpegResultQueue, mJpegImageReader);
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}
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};
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/**
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* A {@link CameraCaptureSession.CaptureCallback} that handles events for the preview and
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* pre-capture sequence.
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*/
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private CameraCaptureSession.CaptureCallback mPreCaptureCallback
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= new CameraCaptureSession.CaptureCallback() {
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private void process(CaptureResult result) {
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synchronized (mCameraStateLock) {
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switch (mState) {
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case STATE_PREVIEW: {
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// We have nothing to do when the camera preview is running normally.
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break;
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}
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case STATE_WAITING_FOR_3A_CONVERGENCE: {
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boolean readyToCapture = true;
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if (!mNoAFRun) {
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Integer afState = result.get(CaptureResult.CONTROL_AF_STATE);
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if (afState == null) {
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break;
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}
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// If auto-focus has reached locked state, we are ready to capture
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readyToCapture =
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(afState == CaptureResult.CONTROL_AF_STATE_FOCUSED_LOCKED ||
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afState == CaptureResult.CONTROL_AF_STATE_NOT_FOCUSED_LOCKED);
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}
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// If we are running on an non-legacy device, we should also wait until
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// auto-exposure and auto-white-balance have converged as well before
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// taking a picture.
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if (!isLegacyLocked()) {
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Integer aeState = result.get(CaptureResult.CONTROL_AE_STATE);
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Integer awbState = result.get(CaptureResult.CONTROL_AWB_STATE);
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if (aeState == null || awbState == null) {
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break;
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}
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readyToCapture = readyToCapture &&
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aeState == CaptureResult.CONTROL_AE_STATE_CONVERGED &&
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awbState == CaptureResult.CONTROL_AWB_STATE_CONVERGED;
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}
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// If we haven't finished the pre-capture sequence but have hit our maximum
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// wait timeout, too bad! Begin capture anyway.
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if (!readyToCapture && hitTimeoutLocked()) {
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Log.w(TAG, "Timed out waiting for pre-capture sequence to complete.");
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readyToCapture = true;
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}
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if (readyToCapture && mPendingUserCaptures > 0) {
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// Capture once for each user tap of the "Picture" button.
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while (mPendingUserCaptures > 0) {
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captureStillPictureLocked();
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mPendingUserCaptures--;
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}
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// After this, the camera will go back to the normal state of preview.
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mState = STATE_PREVIEW;
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}
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}
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}
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}
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}
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@Override
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public void onCaptureProgressed(CameraCaptureSession session, CaptureRequest request,
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CaptureResult partialResult) {
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process(partialResult);
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}
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@Override
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public void onCaptureCompleted(CameraCaptureSession session, CaptureRequest request,
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TotalCaptureResult result) {
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process(result);
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}
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};
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/**
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* A {@link CameraCaptureSession.CaptureCallback} that handles the still JPEG and RAW capture
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* request.
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*/
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private final CameraCaptureSession.CaptureCallback mCaptureCallback
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= new CameraCaptureSession.CaptureCallback() {
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@Override
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public void onCaptureStarted(CameraCaptureSession session, CaptureRequest request,
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long timestamp, long frameNumber) {
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String currentDateTime = generateTimestamp();
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File jpegFile = new File(Environment.
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getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM),
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"IMG_" + currentDateTime + ".jpg");
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// Look up the ImageSaverBuilder for this request and update it with the file name
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// based on the capture start time.
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ImageSaver.ImageSaverBuilder jpegBuilder;
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int requestId = (int) request.getTag();
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synchronized (mCameraStateLock) {
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jpegBuilder = mJpegResultQueue.get(requestId);
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}
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if (jpegBuilder != null) jpegBuilder.setFile(jpegFile);
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}
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@Override
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public void onCaptureCompleted(CameraCaptureSession session, CaptureRequest request,
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TotalCaptureResult result) {
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int requestId = (int) request.getTag();
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ImageSaver.ImageSaverBuilder jpegBuilder;
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ImageSaver.ImageSaverBuilder rawBuilder;
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StringBuilder sb = new StringBuilder();
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// Look up the ImageSaverBuilder for this request and update it with the CaptureResult
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synchronized (mCameraStateLock) {
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jpegBuilder = mJpegResultQueue.get(requestId);
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if (jpegBuilder != null) {
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jpegBuilder.setResult(result);
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sb.append("保存于: ");
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sb.append(jpegBuilder.getSaveLocation());
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}
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// If we have all the results necessary, save the image to a file in the background.
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handleCompletionLocked(requestId, jpegBuilder, mJpegResultQueue);
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finishedCaptureLocked();
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}
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showToast(sb.toString());
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}
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@Override
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public void onCaptureFailed(CameraCaptureSession session, CaptureRequest request,
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CaptureFailure failure) {
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int requestId = (int) request.getTag();
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synchronized (mCameraStateLock) {
|
|
mJpegResultQueue.remove(requestId);
|
|
finishedCaptureLocked();
|
|
}
|
|
showToast("Capture failed!");
|
|
}
|
|
|
|
};
|
|
|
|
/**
|
|
* A {@link Handler} for showing {@link Toast}s on the UI thread.
|
|
*/
|
|
private final Handler mMessageHandler = new Handler(Looper.getMainLooper()) {
|
|
@Override
|
|
public void handleMessage(Message msg) {
|
|
Activity activity = getActivity();
|
|
if (activity != null) {
|
|
Toast.makeText(activity, (String) msg.obj, Toast.LENGTH_SHORT).show();
|
|
}
|
|
}
|
|
};
|
|
|
|
public static Camera2RawFragment newInstance(final boolean hdr) {
|
|
|
|
Camera2RawFragment fragment = new Camera2RawFragment();
|
|
Bundle bundle = new Bundle();
|
|
|
|
return fragment;
|
|
}
|
|
|
|
@Override
|
|
public View onCreateView(LayoutInflater inflater, ViewGroup container,
|
|
Bundle savedInstanceState) {
|
|
return inflater.inflate(R.layout.fragment_camera2_basic, container, false);
|
|
}
|
|
|
|
@Override
|
|
public void onViewCreated(final View view, Bundle savedInstanceState) {
|
|
|
|
Activity activity = getActivity();
|
|
Intent intent = activity.getIntent();
|
|
if (intent != null) {
|
|
mHdr = intent.getBooleanExtra("hdr", false);
|
|
}
|
|
|
|
Resources resources = getResources();
|
|
ImageView imageView = (ImageView)view.findViewById(R.id.picture);
|
|
imageView.setImageDrawable(resources.getDrawable(R.drawable.ic_take_photo));
|
|
imageView = (ImageView)view.findViewById(R.id.backMain);
|
|
imageView.setImageDrawable(resources.getDrawable(R.drawable.ic_back));
|
|
|
|
view.findViewById(R.id.picture).setOnClickListener(this);
|
|
// view.findViewById(R.id.info).setOnClickListener(this);
|
|
mTextureView = (AutoFitTextureView) view.findViewById(R.id.texture);
|
|
|
|
view.findViewById(R.id.backMain).setOnClickListener(new View.OnClickListener() {
|
|
|
|
@Override
|
|
public void onClick(View v) {
|
|
getActivity().finish();
|
|
}
|
|
});
|
|
|
|
// Setup a new OrientationEventListener. This is used to handle rotation events like a
|
|
// 180 degree rotation that do not normally trigger a call to onCreate to do view re-layout
|
|
// or otherwise cause the preview TextureView's size to change.
|
|
mOrientationListener = new OrientationEventListener(getActivity(),
|
|
SensorManager.SENSOR_DELAY_NORMAL) {
|
|
@Override
|
|
public void onOrientationChanged(int orientation) {
|
|
if (mTextureView != null && mTextureView.isAvailable()) {
|
|
configureTransform(mTextureView.getWidth(), mTextureView.getHeight());
|
|
}
|
|
}
|
|
};
|
|
}
|
|
|
|
@Override
|
|
public void onResume() {
|
|
super.onResume();
|
|
startBackgroundThread();
|
|
openCamera();
|
|
|
|
// When the screen is turned off and turned back on, the SurfaceTexture is already
|
|
// available, and "onSurfaceTextureAvailable" will not be called. In that case, we should
|
|
// configure the preview bounds here (otherwise, we wait until the surface is ready in
|
|
// the SurfaceTextureListener).
|
|
if (mTextureView.isAvailable()) {
|
|
configureTransform(mTextureView.getWidth(), mTextureView.getHeight());
|
|
} else {
|
|
mTextureView.setSurfaceTextureListener(mSurfaceTextureListener);
|
|
}
|
|
|
|
if (mOrientationListener != null && mOrientationListener.canDetectOrientation()) {
|
|
mOrientationListener.enable();
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public void onPause() {
|
|
if (mOrientationListener != null) {
|
|
mOrientationListener.disable();
|
|
}
|
|
closeCamera();
|
|
stopBackgroundThread();
|
|
super.onPause();
|
|
}
|
|
|
|
@Override
|
|
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
|
|
if (requestCode == REQUEST_CAMERA_PERMISSIONS) {
|
|
for (int result : grantResults) {
|
|
if (result != PackageManager.PERMISSION_GRANTED) {
|
|
showMissingPermissionError();
|
|
return;
|
|
}
|
|
}
|
|
} else {
|
|
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public void onClick(View view) {
|
|
switch (view.getId()) {
|
|
case R.id.picture: {
|
|
takePicture();
|
|
break;
|
|
}
|
|
case R.id.info: {
|
|
Activity activity = getActivity();
|
|
if (null != activity) {
|
|
new AlertDialog.Builder(activity)
|
|
.setMessage(R.string.intro_message)
|
|
.setPositiveButton(android.R.string.ok, null)
|
|
.show();
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Sets up state related to camera that is needed before opening a {@link CameraDevice}.
|
|
*/
|
|
private boolean setUpCameraOutputs() {
|
|
Activity activity = getActivity();
|
|
CameraManager manager = (CameraManager) activity.getSystemService(Context.CAMERA_SERVICE);
|
|
if (manager == null) {
|
|
ErrorDialog.buildErrorDialog("This device doesn't support Camera2 API.").
|
|
show(getFragmentManager(), "dialog");
|
|
return false;
|
|
}
|
|
|
|
Intent intent = activity.getIntent();
|
|
String expectedCameraId = Integer.toString(intent.getIntExtra("cameraId", 0));
|
|
|
|
try {
|
|
// Find a CameraDevice that supports RAW captures, and configure state.
|
|
for (String cameraId : manager.getCameraIdList()) {
|
|
|
|
if (!TextUtils.equals(cameraId, expectedCameraId)) {
|
|
continue;
|
|
}
|
|
|
|
CameraCharacteristics characteristics
|
|
= manager.getCameraCharacteristics(cameraId);
|
|
|
|
StreamConfigurationMap map = characteristics.get(
|
|
CameraCharacteristics.SCALER_STREAM_CONFIGURATION_MAP);
|
|
|
|
// For still image captures, we use the largest available size.
|
|
Size[] resolutions = map.getHighResolutionOutputSizes(ImageFormat.JPEG);
|
|
if (resolutions == null || resolutions.length == 0) {
|
|
resolutions = map.getOutputSizes(ImageFormat.JPEG);
|
|
}
|
|
Size largestJpeg = Collections.max(Arrays.asList(resolutions), new CompareSizesByArea());
|
|
|
|
synchronized (mCameraStateLock) {
|
|
// Set up ImageReaders for JPEG and RAW outputs. Place these in a reference
|
|
// counted wrapper to ensure they are only closed when all background tasks
|
|
// using them are finished.
|
|
if (mJpegImageReader == null || mJpegImageReader.getAndRetain() == null) {
|
|
mJpegImageReader = new RefCountedAutoCloseable<>(
|
|
ImageReader.newInstance(largestJpeg.getWidth(),
|
|
largestJpeg.getHeight(), ImageFormat.JPEG, /*maxImages*/5));
|
|
}
|
|
mJpegImageReader.get().setOnImageAvailableListener(
|
|
mOnJpegImageAvailableListener, mBackgroundHandler);
|
|
|
|
mCharacteristics = characteristics;
|
|
mCameraId = cameraId;
|
|
}
|
|
return true;
|
|
}
|
|
} catch (CameraAccessException e) {
|
|
e.printStackTrace();
|
|
}
|
|
|
|
// If we found no suitable cameras for capturing RAW, warn the user.
|
|
ErrorDialog.buildErrorDialog("This device doesn't support capturing RAW photos").
|
|
show(getFragmentManager(), "dialog");
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Opens the camera specified by {@link #mCameraId}.
|
|
*/
|
|
@SuppressWarnings("MissingPermission")
|
|
private void openCamera() {
|
|
if (!setUpCameraOutputs()) {
|
|
return;
|
|
}
|
|
if (!hasAllPermissionsGranted()) {
|
|
requestCameraPermissions();
|
|
return;
|
|
}
|
|
|
|
Activity activity = getActivity();
|
|
CameraManager manager = (CameraManager) activity.getSystemService(Context.CAMERA_SERVICE);
|
|
try {
|
|
// Wait for any previously running session to finish.
|
|
if (!mCameraOpenCloseLock.tryAcquire(2500, TimeUnit.MILLISECONDS)) {
|
|
throw new RuntimeException("Time out waiting to lock camera opening.");
|
|
}
|
|
|
|
String cameraId;
|
|
Handler backgroundHandler;
|
|
synchronized (mCameraStateLock) {
|
|
cameraId = mCameraId;
|
|
backgroundHandler = mBackgroundHandler;
|
|
}
|
|
|
|
// Attempt to open the camera. mStateCallback will be called on the background handler's
|
|
// thread when this succeeds or fails.
|
|
manager.openCamera(cameraId, mStateCallback, backgroundHandler);
|
|
} catch (CameraAccessException e) {
|
|
e.printStackTrace();
|
|
} catch (InterruptedException e) {
|
|
throw new RuntimeException("Interrupted while trying to lock camera opening.", e);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Requests permissions necessary to use camera and save pictures.
|
|
*/
|
|
private void requestCameraPermissions() {
|
|
if (shouldShowRationale()) {
|
|
// PermissionConfirmationDialog.newInstance().show(getChildFragmentManager(), "dialog");
|
|
} else {
|
|
// FragmentCompat.requestPermissions(this, CAMERA_PERMISSIONS, REQUEST_CAMERA_PERMISSIONS);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Tells whether all the necessary permissions are granted to this app.
|
|
*
|
|
* @return True if all the required permissions are granted.
|
|
*/
|
|
private boolean hasAllPermissionsGranted() {
|
|
for (String permission : CAMERA_PERMISSIONS) {
|
|
if (ActivityCompat.checkSelfPermission(getActivity(), permission)
|
|
!= PackageManager.PERMISSION_GRANTED) {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Gets whether you should show UI with rationale for requesting the permissions.
|
|
*
|
|
* @return True if the UI should be shown.
|
|
*/
|
|
private boolean shouldShowRationale() {
|
|
for (String permission : CAMERA_PERMISSIONS) {
|
|
// if (FragmentCompat.shouldShowRequestPermissionRationale(this, permission)) {
|
|
// return true;
|
|
// }
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Shows that this app really needs the permission and finishes the app.
|
|
*/
|
|
private void showMissingPermissionError() {
|
|
Activity activity = getActivity();
|
|
if (activity != null) {
|
|
Toast.makeText(activity, R.string.request_permission, Toast.LENGTH_SHORT).show();
|
|
activity.finish();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Closes the current {@link CameraDevice}.
|
|
*/
|
|
private void closeCamera() {
|
|
try {
|
|
mCameraOpenCloseLock.acquire();
|
|
synchronized (mCameraStateLock) {
|
|
|
|
// Reset state and clean up resources used by the camera.
|
|
// Note: After calling this, the ImageReaders will be closed after any background
|
|
// tasks saving Images from these readers have been completed.
|
|
mPendingUserCaptures = 0;
|
|
mState = STATE_CLOSED;
|
|
if (null != mCaptureSession) {
|
|
mCaptureSession.close();
|
|
mCaptureSession = null;
|
|
}
|
|
if (null != mCameraDevice) {
|
|
mCameraDevice.close();
|
|
mCameraDevice = null;
|
|
}
|
|
if (null != mJpegImageReader) {
|
|
mJpegImageReader.close();
|
|
mJpegImageReader = null;
|
|
}
|
|
}
|
|
} catch (InterruptedException e) {
|
|
throw new RuntimeException("Interrupted while trying to lock camera closing.", e);
|
|
} finally {
|
|
mCameraOpenCloseLock.release();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Starts a background thread and its {@link Handler}.
|
|
*/
|
|
private void startBackgroundThread() {
|
|
mBackgroundThread = new HandlerThread("CameraBackground");
|
|
mBackgroundThread.start();
|
|
synchronized (mCameraStateLock) {
|
|
mBackgroundHandler = new Handler(mBackgroundThread.getLooper());
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Stops the background thread and its {@link Handler}.
|
|
*/
|
|
private void stopBackgroundThread() {
|
|
mBackgroundThread.quitSafely();
|
|
try {
|
|
mBackgroundThread.join();
|
|
mBackgroundThread = null;
|
|
synchronized (mCameraStateLock) {
|
|
mBackgroundHandler = null;
|
|
}
|
|
} catch (InterruptedException e) {
|
|
e.printStackTrace();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Creates a new {@link CameraCaptureSession} for camera preview.
|
|
* <p/>
|
|
* Call this only with {@link #mCameraStateLock} held.
|
|
*/
|
|
private void createCameraPreviewSessionLocked() {
|
|
try {
|
|
SurfaceTexture texture = mTextureView.getSurfaceTexture();
|
|
// We configure the size of default buffer to be the size of camera preview we want.
|
|
texture.setDefaultBufferSize(mPreviewSize.getWidth(), mPreviewSize.getHeight());
|
|
|
|
// This is the output Surface we need to start preview.
|
|
Surface surface = new Surface(texture);
|
|
|
|
// We set up a CaptureRequest.Builder with the output Surface.
|
|
mPreviewRequestBuilder
|
|
= mCameraDevice.createCaptureRequest(CameraDevice.TEMPLATE_PREVIEW);
|
|
mPreviewRequestBuilder.addTarget(surface);
|
|
|
|
// Here, we create a CameraCaptureSession for camera preview.
|
|
mCameraDevice.createCaptureSession(Arrays.asList(surface,
|
|
mJpegImageReader.get().getSurface()), new CameraCaptureSession.StateCallback() {
|
|
@Override
|
|
public void onConfigured(CameraCaptureSession cameraCaptureSession) {
|
|
synchronized (mCameraStateLock) {
|
|
// The camera is already closed
|
|
if (null == mCameraDevice) {
|
|
return;
|
|
}
|
|
|
|
try {
|
|
setup3AControlsLocked(mPreviewRequestBuilder);
|
|
// Finally, we start displaying the camera preview.
|
|
cameraCaptureSession.setRepeatingRequest(
|
|
mPreviewRequestBuilder.build(),
|
|
mPreCaptureCallback, mBackgroundHandler);
|
|
mState = STATE_PREVIEW;
|
|
} catch (CameraAccessException | IllegalStateException e) {
|
|
e.printStackTrace();
|
|
return;
|
|
}
|
|
// When the session is ready, we start displaying the preview.
|
|
mCaptureSession = cameraCaptureSession;
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public void onConfigureFailed(CameraCaptureSession cameraCaptureSession) {
|
|
showToast("Failed to configure camera.");
|
|
}
|
|
}, mBackgroundHandler
|
|
);
|
|
} catch (CameraAccessException e) {
|
|
e.printStackTrace();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Configure the given {@link CaptureRequest.Builder} to use auto-focus, auto-exposure, and
|
|
* auto-white-balance controls if available.
|
|
* <p/>
|
|
* Call this only with {@link #mCameraStateLock} held.
|
|
*
|
|
* @param builder the builder to configure.
|
|
*/
|
|
private void setup3AControlsLocked(CaptureRequest.Builder builder) {
|
|
// Enable auto-magical 3A run by camera device
|
|
builder.set(CaptureRequest.CONTROL_MODE,
|
|
CaptureRequest.CONTROL_MODE_AUTO);
|
|
|
|
Float minFocusDist =
|
|
mCharacteristics.get(CameraCharacteristics.LENS_INFO_MINIMUM_FOCUS_DISTANCE);
|
|
|
|
// If MINIMUM_FOCUS_DISTANCE is 0, lens is fixed-focus and we need to skip the AF run.
|
|
mNoAFRun = (minFocusDist == null || minFocusDist == 0);
|
|
|
|
if (!mNoAFRun) {
|
|
// If there is a "continuous picture" mode available, use it, otherwise default to AUTO.
|
|
if (contains(mCharacteristics.get(
|
|
CameraCharacteristics.CONTROL_AF_AVAILABLE_MODES),
|
|
CaptureRequest.CONTROL_AF_MODE_CONTINUOUS_PICTURE)) {
|
|
builder.set(CaptureRequest.CONTROL_AF_MODE,
|
|
CaptureRequest.CONTROL_AF_MODE_CONTINUOUS_PICTURE);
|
|
} else {
|
|
builder.set(CaptureRequest.CONTROL_AF_MODE,
|
|
CaptureRequest.CONTROL_AF_MODE_AUTO);
|
|
}
|
|
}
|
|
|
|
// If there is an auto-magical flash control mode available, use it, otherwise default to
|
|
// the "on" mode, which is guaranteed to always be available.
|
|
if (contains(mCharacteristics.get(
|
|
CameraCharacteristics.CONTROL_AE_AVAILABLE_MODES),
|
|
CaptureRequest.CONTROL_AE_MODE_ON_AUTO_FLASH)) {
|
|
builder.set(CaptureRequest.CONTROL_AE_MODE,
|
|
CaptureRequest.CONTROL_AE_MODE_ON_AUTO_FLASH);
|
|
} else {
|
|
builder.set(CaptureRequest.CONTROL_AE_MODE,
|
|
CaptureRequest.CONTROL_AE_MODE_ON);
|
|
}
|
|
|
|
// If there is an auto-magical white balance control mode available, use it.
|
|
if (contains(mCharacteristics.get(
|
|
CameraCharacteristics.CONTROL_AWB_AVAILABLE_MODES),
|
|
CaptureRequest.CONTROL_AWB_MODE_AUTO)) {
|
|
// Allow AWB to run auto-magically if this device supports this
|
|
builder.set(CaptureRequest.CONTROL_AWB_MODE,
|
|
CaptureRequest.CONTROL_AWB_MODE_AUTO);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Configure the necessary {@link android.graphics.Matrix} transformation to `mTextureView`,
|
|
* and start/restart the preview capture session if necessary.
|
|
* <p/>
|
|
* This method should be called after the camera state has been initialized in
|
|
* setUpCameraOutputs.
|
|
*
|
|
* @param viewWidth The width of `mTextureView`
|
|
* @param viewHeight The height of `mTextureView`
|
|
*/
|
|
private void configureTransform(int viewWidth, int viewHeight) {
|
|
Activity activity = getActivity();
|
|
synchronized (mCameraStateLock) {
|
|
if (null == mTextureView || null == activity) {
|
|
return;
|
|
}
|
|
|
|
StreamConfigurationMap map = mCharacteristics.get(
|
|
CameraCharacteristics.SCALER_STREAM_CONFIGURATION_MAP);
|
|
|
|
// For still image captures, we always use the largest available size.
|
|
Size[] resolutions = map.getHighResolutionOutputSizes(ImageFormat.JPEG);
|
|
if (resolutions == null || resolutions.length == 0) {
|
|
resolutions = map.getOutputSizes(ImageFormat.JPEG);
|
|
}
|
|
Size largestJpeg = Collections.max(Arrays.asList(resolutions), new CompareSizesByArea());
|
|
|
|
// Find the rotation of the device relative to the native device orientation.
|
|
int deviceRotation = activity.getWindowManager().getDefaultDisplay().getRotation();
|
|
Point displaySize = new Point();
|
|
activity.getWindowManager().getDefaultDisplay().getSize(displaySize);
|
|
|
|
// Find the rotation of the device relative to the camera sensor's orientation.
|
|
int totalRotation = sensorToDeviceRotation(mCharacteristics, deviceRotation, getRotationAdjustment());
|
|
|
|
// Swap the view dimensions for calculation as needed if they are rotated relative to
|
|
// the sensor.
|
|
final boolean swappedDimensions = totalRotation == 90 || totalRotation == 270;
|
|
int rotatedViewWidth = viewWidth;
|
|
int rotatedViewHeight = viewHeight;
|
|
int maxPreviewWidth = displaySize.x;
|
|
int maxPreviewHeight = displaySize.y;
|
|
|
|
if (swappedDimensions) {
|
|
rotatedViewWidth = viewHeight;
|
|
rotatedViewHeight = viewWidth;
|
|
maxPreviewWidth = displaySize.y;
|
|
maxPreviewHeight = displaySize.x;
|
|
}
|
|
|
|
// Preview should not be larger than display size and 1080p.
|
|
if (maxPreviewWidth > MAX_PREVIEW_WIDTH) {
|
|
maxPreviewWidth = MAX_PREVIEW_WIDTH;
|
|
}
|
|
|
|
if (maxPreviewHeight > MAX_PREVIEW_HEIGHT) {
|
|
maxPreviewHeight = MAX_PREVIEW_HEIGHT;
|
|
}
|
|
|
|
// Find the best preview size for these view dimensions and configured JPEG size.
|
|
|
|
final Size previewSize = chooseOptimalSize(map.getOutputSizes(SurfaceTexture.class),
|
|
rotatedViewWidth, rotatedViewHeight, maxPreviewWidth, maxPreviewHeight,
|
|
largestJpeg);
|
|
|
|
if (swappedDimensions) {
|
|
mTextureView.setAspectRatio(
|
|
previewSize.getHeight(), previewSize.getWidth());
|
|
} else {
|
|
mTextureView.setAspectRatio(
|
|
previewSize.getWidth(), previewSize.getHeight());
|
|
}
|
|
|
|
|
|
|
|
// Find rotation of device in degrees (reverse device orientation for front-facing
|
|
// cameras).
|
|
int rotation = (mCharacteristics.get(CameraCharacteristics.LENS_FACING) ==
|
|
CameraCharacteristics.LENS_FACING_FRONT) ?
|
|
(360 + ORIENTATIONS.get(deviceRotation + getRotationAdjustment() / 90)) % 360 :
|
|
(360 - ORIENTATIONS.get(deviceRotation + getRotationAdjustment() / 90)) % 360;
|
|
|
|
Matrix matrix = new Matrix();
|
|
RectF viewRect = new RectF(0, 0, viewWidth, viewHeight);
|
|
RectF bufferRect = new RectF(0, 0, previewSize.getHeight(), previewSize.getWidth());
|
|
float centerX = viewRect.centerX();
|
|
float centerY = viewRect.centerY();
|
|
// Initially, output stream images from the Camera2 API will be rotated to the native
|
|
// device orientation from the sensor's orientation, and the TextureView will default to
|
|
// scaling these buffers to fill it's view bounds. If the aspect ratios and relative
|
|
// orientations are correct, this is fine.
|
|
//
|
|
// However, if the device orientation has been rotated relative to its native
|
|
// orientation so that the TextureView's dimensions are swapped relative to the
|
|
// native device orientation, we must do the following to ensure the output stream
|
|
// images are not incorrectly scaled by the TextureView:
|
|
// - Undo the scale-to-fill from the output buffer's dimensions (i.e. its dimensions
|
|
// in the native device orientation) to the TextureView's dimension.
|
|
// - Apply a scale-to-fill from the output buffer's rotated dimensions
|
|
// (i.e. its dimensions in the current device orientation) to the TextureView's
|
|
// dimensions.
|
|
// - Apply the rotation from the native device orientation to the current device
|
|
// rotation.
|
|
if (Surface.ROTATION_90 == deviceRotation || Surface.ROTATION_270 == deviceRotation) {
|
|
if (rotation == 0) {
|
|
matrix.postScale(1, 1);
|
|
} else if (rotation == 90){
|
|
bufferRect.offset(centerX - bufferRect.centerX(), centerY - bufferRect.centerY());
|
|
matrix.setRectToRect(viewRect, bufferRect, Matrix.ScaleToFit.FILL);
|
|
float scaleh =
|
|
(float) viewHeight / previewSize.getHeight();
|
|
float scalew =
|
|
(float) viewWidth / previewSize.getWidth();
|
|
matrix.postScale(scalew, scaleh, centerX, centerY);
|
|
} else if (rotation == 180){
|
|
matrix.postScale(1, 1);
|
|
}else if (rotation == 270){
|
|
bufferRect.offset(centerX - bufferRect.centerX(), centerY - bufferRect.centerY());
|
|
matrix.setRectToRect(viewRect, bufferRect, Matrix.ScaleToFit.FILL);
|
|
float scaleh =
|
|
(float) viewHeight / previewSize.getHeight();
|
|
float scalew =
|
|
(float) viewWidth / previewSize.getWidth();
|
|
matrix.postScale(scaleh, scalew, centerX, centerY);
|
|
}
|
|
}
|
|
matrix.postRotate(rotation, centerX, centerY);
|
|
|
|
mTextureView.setTransform(matrix);
|
|
|
|
// Start or restart the active capture session if the preview was initialized or
|
|
// if its aspect ratio changed significantly.
|
|
if (mPreviewSize == null || !checkAspectsEqual(previewSize, mPreviewSize)) {
|
|
mPreviewSize = previewSize;
|
|
if (mState != STATE_CLOSED) {
|
|
createCameraPreviewSessionLocked();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Initiate a still image capture.
|
|
* <p/>
|
|
* This function sends a capture request that initiates a pre-capture sequence in our state
|
|
* machine that waits for auto-focus to finish, ending in a "locked" state where the lens is no
|
|
* longer moving, waits for auto-exposure to choose a good exposure value, and waits for
|
|
* auto-white-balance to converge.
|
|
*/
|
|
private void takePicture() {
|
|
synchronized (mCameraStateLock) {
|
|
mPendingUserCaptures++;
|
|
|
|
// If we already triggered a pre-capture sequence, or are in a state where we cannot
|
|
// do this, return immediately.
|
|
if (mState != STATE_PREVIEW) {
|
|
return;
|
|
}
|
|
|
|
try {
|
|
// Trigger an auto-focus run if camera is capable. If the camera is already focused,
|
|
// this should do nothing.
|
|
if (!mNoAFRun) {
|
|
mPreviewRequestBuilder.set(CaptureRequest.CONTROL_AF_TRIGGER,
|
|
CameraMetadata.CONTROL_AF_TRIGGER_START);
|
|
}
|
|
|
|
// If this is not a legacy device, we can also trigger an auto-exposure metering
|
|
// run.
|
|
if (!isLegacyLocked()) {
|
|
// Tell the camera to lock focus.
|
|
mPreviewRequestBuilder.set(CaptureRequest.CONTROL_AE_PRECAPTURE_TRIGGER,
|
|
CameraMetadata.CONTROL_AE_PRECAPTURE_TRIGGER_START);
|
|
}
|
|
|
|
// Update state machine to wait for auto-focus, auto-exposure, and
|
|
// auto-white-balance (aka. "3A") to converge.
|
|
mState = STATE_WAITING_FOR_3A_CONVERGENCE;
|
|
|
|
// Start a timer for the pre-capture sequence.
|
|
startTimerLocked();
|
|
|
|
// Replace the existing repeating request with one with updated 3A triggers.
|
|
mCaptureSession.capture(mPreviewRequestBuilder.build(), mPreCaptureCallback,
|
|
mBackgroundHandler);
|
|
} catch (CameraAccessException e) {
|
|
e.printStackTrace();
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Send a capture request to the camera device that initiates a capture targeting the JPEG and
|
|
* RAW outputs.
|
|
* <p/>
|
|
* Call this only with {@link #mCameraStateLock} held.
|
|
*/
|
|
private void captureStillPictureLocked() {
|
|
try {
|
|
final Activity activity = getActivity();
|
|
if (null == activity || null == mCameraDevice) {
|
|
return;
|
|
}
|
|
// This is the CaptureRequest.Builder that we use to take a picture.
|
|
final CaptureRequest.Builder captureBuilder =
|
|
mCameraDevice.createCaptureRequest(CameraDevice.TEMPLATE_STILL_CAPTURE);
|
|
|
|
captureBuilder.addTarget(mJpegImageReader.get().getSurface());
|
|
|
|
// Use the same AE and AF modes as the preview.
|
|
setup3AControlsLocked(captureBuilder);
|
|
|
|
// Set orientation.
|
|
int rotation = activity.getWindowManager().getDefaultDisplay().getRotation();
|
|
captureBuilder.set(CaptureRequest.JPEG_ORIENTATION,
|
|
sensorToDeviceRotation(mCharacteristics, rotation, getRotationAdjustment()));
|
|
|
|
// Set request tag to easily track results in callbacks.
|
|
captureBuilder.setTag(mRequestCounter.getAndIncrement());
|
|
|
|
CaptureRequest request = captureBuilder.build();
|
|
|
|
// Create an ImageSaverBuilder in which to collect results, and add it to the queue
|
|
// of active requests.
|
|
ImageSaver.ImageSaverBuilder jpegBuilder = new ImageSaver.ImageSaverBuilder(activity)
|
|
.setCharacteristics(mCharacteristics).setHdr(mHdr);
|
|
|
|
mJpegResultQueue.put((int) request.getTag(), jpegBuilder);
|
|
|
|
mCaptureSession.capture(request, mCaptureCallback, mBackgroundHandler);
|
|
|
|
} catch (CameraAccessException e) {
|
|
e.printStackTrace();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Called after a RAW/JPEG capture has completed; resets the AF trigger state for the
|
|
* pre-capture sequence.
|
|
* <p/>
|
|
* Call this only with {@link #mCameraStateLock} held.
|
|
*/
|
|
private void finishedCaptureLocked() {
|
|
try {
|
|
// Reset the auto-focus trigger in case AF didn't run quickly enough.
|
|
if (!mNoAFRun) {
|
|
mPreviewRequestBuilder.set(CaptureRequest.CONTROL_AF_TRIGGER,
|
|
CameraMetadata.CONTROL_AF_TRIGGER_CANCEL);
|
|
|
|
mCaptureSession.capture(mPreviewRequestBuilder.build(), mPreCaptureCallback,
|
|
mBackgroundHandler);
|
|
|
|
mPreviewRequestBuilder.set(CaptureRequest.CONTROL_AF_TRIGGER,
|
|
CameraMetadata.CONTROL_AF_TRIGGER_IDLE);
|
|
}
|
|
} catch (CameraAccessException e) {
|
|
e.printStackTrace();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Retrieve the next {@link Image} from a reference counted {@link ImageReader}, retaining
|
|
* that {@link ImageReader} until that {@link Image} is no longer in use, and set this
|
|
* {@link Image} as the result for the next request in the queue of pending requests. If
|
|
* all necessary information is available, begin saving the image to a file in a background
|
|
* thread.
|
|
*
|
|
* @param pendingQueue the currently active requests.
|
|
* @param reader a reference counted wrapper containing an {@link ImageReader} from which
|
|
* to acquire an image.
|
|
*/
|
|
private void dequeueAndSaveImage(TreeMap<Integer, ImageSaver.ImageSaverBuilder> pendingQueue,
|
|
RefCountedAutoCloseable<ImageReader> reader) {
|
|
synchronized (mCameraStateLock) {
|
|
Map.Entry<Integer, ImageSaver.ImageSaverBuilder> entry =
|
|
pendingQueue.firstEntry();
|
|
ImageSaver.ImageSaverBuilder builder = entry.getValue();
|
|
|
|
// Increment reference count to prevent ImageReader from being closed while we
|
|
// are saving its Images in a background thread (otherwise their resources may
|
|
// be freed while we are writing to a file).
|
|
if (reader == null || reader.getAndRetain() == null) {
|
|
Log.e(TAG, "Paused the activity before we could save the image," +
|
|
" ImageReader already closed.");
|
|
pendingQueue.remove(entry.getKey());
|
|
return;
|
|
}
|
|
|
|
Image image;
|
|
try {
|
|
image = reader.get().acquireNextImage();
|
|
} catch (IllegalStateException e) {
|
|
Log.e(TAG, "Too many images queued for saving, dropping image for request: " +
|
|
entry.getKey());
|
|
pendingQueue.remove(entry.getKey());
|
|
return;
|
|
}
|
|
|
|
builder.setRefCountedReader(reader).setImage(image);
|
|
|
|
handleCompletionLocked(entry.getKey(), builder, pendingQueue);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Runnable that saves an {@link Image} into the specified {@link File}, and updates
|
|
* {@link android.provider.MediaStore} to include the resulting file.
|
|
* <p/>
|
|
* This can be constructed through an {@link ImageSaverBuilder} as the necessary image and
|
|
* result information becomes available.
|
|
*/
|
|
private static class ImageSaver implements Runnable {
|
|
|
|
/**
|
|
* The image to save.
|
|
*/
|
|
private final Image mImage;
|
|
/**
|
|
* The file we save the image into.
|
|
*/
|
|
private final File mFile;
|
|
|
|
/**
|
|
* The CaptureResult for this image capture.
|
|
*/
|
|
private final CaptureResult mCaptureResult;
|
|
|
|
private final boolean mHdr;
|
|
|
|
/**
|
|
* The CameraCharacteristics for this camera device.
|
|
*/
|
|
private final CameraCharacteristics mCharacteristics;
|
|
|
|
/**
|
|
* The Context to use when updating MediaStore with the saved images.
|
|
*/
|
|
private final Context mContext;
|
|
|
|
/**
|
|
* A reference counted wrapper for the ImageReader that owns the given image.
|
|
*/
|
|
private final RefCountedAutoCloseable<ImageReader> mReader;
|
|
|
|
private ImageSaver(boolean hdr, Image image, File file, CaptureResult result,
|
|
CameraCharacteristics characteristics, Context context,
|
|
RefCountedAutoCloseable<ImageReader> reader) {
|
|
mImage = image;
|
|
mFile = file;
|
|
mHdr = hdr;
|
|
mCaptureResult = result;
|
|
mCharacteristics = characteristics;
|
|
mContext = context;
|
|
mReader = reader;
|
|
}
|
|
|
|
@Override
|
|
public void run() {
|
|
boolean success = false;
|
|
int format = mImage.getFormat();
|
|
switch (format) {
|
|
case ImageFormat.JPEG: {
|
|
|
|
ByteBuffer buffer = mImage.getPlanes()[0].getBuffer();
|
|
byte[] bytes = new byte[buffer.remaining()];
|
|
buffer.get(bytes);
|
|
|
|
FileOutputStream output = null;
|
|
try {
|
|
output = new FileOutputStream(mFile);
|
|
if (mCharacteristics.get(CameraCharacteristics.LENS_FACING) == CameraCharacteristics.LENS_FACING_FRONT) {
|
|
Bitmap bm = BitmapFactory.decodeByteArray(bytes, 0, bytes.length, null);
|
|
Bitmap bm2 = flipBitmap(bm);
|
|
bm.recycle();
|
|
success = bm2.compress(Bitmap.CompressFormat.JPEG, 95, output);
|
|
bm2.recycle();
|
|
} else {
|
|
if (mHdr) {
|
|
Bitmap bm = BitmapFactory.decodeByteArray(bytes, 0, bytes.length, null);
|
|
Bitmap bm2 = flipBitmap180(bm);
|
|
bm.recycle();
|
|
success = bm2.compress(Bitmap.CompressFormat.JPEG, 95, output);
|
|
bm2.recycle();
|
|
} else {
|
|
output.write(bytes);
|
|
success = true;
|
|
}
|
|
}
|
|
} catch (IOException e) {
|
|
e.printStackTrace();
|
|
} finally {
|
|
mImage.close();
|
|
closeOutput(output);
|
|
}
|
|
|
|
|
|
break;
|
|
}
|
|
case ImageFormat.RAW_SENSOR: {
|
|
DngCreator dngCreator = new DngCreator(mCharacteristics, mCaptureResult);
|
|
FileOutputStream output = null;
|
|
try {
|
|
output = new FileOutputStream(mFile);
|
|
dngCreator.writeImage(output, mImage);
|
|
success = true;
|
|
} catch (IOException e) {
|
|
e.printStackTrace();
|
|
} finally {
|
|
mImage.close();
|
|
closeOutput(output);
|
|
}
|
|
break;
|
|
}
|
|
default: {
|
|
Log.e(TAG, "Cannot save image, unexpected image format:" + format);
|
|
break;
|
|
}
|
|
}
|
|
|
|
// Decrement reference count to allow ImageReader to be closed to free up resources.
|
|
mReader.close();
|
|
|
|
// If saving the file succeeded, update MediaStore.
|
|
if (success) {
|
|
MediaScannerConnection.scanFile(mContext, new String[]{mFile.getPath()},
|
|
/*mimeTypes*/null, new MediaScannerConnection.MediaScannerConnectionClient() {
|
|
@Override
|
|
public void onMediaScannerConnected() {
|
|
// Do nothing
|
|
}
|
|
|
|
@Override
|
|
public void onScanCompleted(String path, Uri uri) {
|
|
Log.i(TAG, "Scanned " + path + ":");
|
|
Log.i(TAG, "-> uri=" + uri);
|
|
}
|
|
});
|
|
}
|
|
}
|
|
|
|
private Bitmap flipBitmap(Bitmap bitmap) {
|
|
if (null == bitmap) {
|
|
return null;
|
|
}
|
|
int width = bitmap.getWidth();
|
|
int height = bitmap.getHeight();
|
|
Matrix m = new Matrix();
|
|
m.postScale(-1, 1); //镜像水平翻转
|
|
//m.postScale(1, -1); //镜像垂直翻转
|
|
//m.postRotate(-90); //旋转-90度
|
|
Bitmap new2 = Bitmap.createBitmap(bitmap, 0, 0, width, height, m, true);
|
|
return new2;
|
|
}
|
|
|
|
private Bitmap flipBitmap180(Bitmap bitmap) {
|
|
if (null == bitmap) {
|
|
return null;
|
|
}
|
|
int width = bitmap.getWidth();
|
|
int height = bitmap.getHeight();
|
|
Matrix m = new Matrix();
|
|
// m.postScale(-1, 1); //镜像水平翻转
|
|
m.postScale(1, -1); //镜像垂直翻转
|
|
//m.postRotate(-90); //旋转-90度
|
|
Bitmap new2 = Bitmap.createBitmap(bitmap, 0, 0, width, height, m, true);
|
|
return new2;
|
|
}
|
|
|
|
/**
|
|
* Builder class for constructing {@link ImageSaver}s.
|
|
* <p/>
|
|
* This class is thread safe.
|
|
*/
|
|
public static class ImageSaverBuilder {
|
|
private Image mImage;
|
|
private File mFile;
|
|
private boolean mHdr;
|
|
private CaptureResult mCaptureResult;
|
|
private CameraCharacteristics mCharacteristics;
|
|
private Context mContext;
|
|
private RefCountedAutoCloseable<ImageReader> mReader;
|
|
|
|
/**
|
|
* Construct a new ImageSaverBuilder using the given {@link Context}.
|
|
*
|
|
* @param context a {@link Context} to for accessing the
|
|
* {@link android.provider.MediaStore}.
|
|
*/
|
|
public ImageSaverBuilder(final Context context) {
|
|
mContext = context;
|
|
}
|
|
|
|
public synchronized ImageSaverBuilder setRefCountedReader(
|
|
RefCountedAutoCloseable<ImageReader> reader) {
|
|
if (reader == null) throw new NullPointerException();
|
|
|
|
mReader = reader;
|
|
return this;
|
|
}
|
|
|
|
public synchronized ImageSaverBuilder setImage(final Image image) {
|
|
if (image == null) throw new NullPointerException();
|
|
mImage = image;
|
|
return this;
|
|
}
|
|
|
|
public synchronized ImageSaverBuilder setHdr(final boolean hdr) {
|
|
mHdr = hdr;
|
|
return this;
|
|
}
|
|
|
|
public synchronized ImageSaverBuilder setFile(final File file) {
|
|
if (file == null) throw new NullPointerException();
|
|
mFile = file;
|
|
return this;
|
|
}
|
|
|
|
public synchronized ImageSaverBuilder setResult(final CaptureResult result) {
|
|
if (result == null) throw new NullPointerException();
|
|
mCaptureResult = result;
|
|
return this;
|
|
}
|
|
|
|
public synchronized ImageSaverBuilder setCharacteristics(
|
|
final CameraCharacteristics characteristics) {
|
|
if (characteristics == null) throw new NullPointerException();
|
|
mCharacteristics = characteristics;
|
|
return this;
|
|
}
|
|
|
|
public synchronized ImageSaver buildIfComplete() {
|
|
if (!isComplete()) {
|
|
return null;
|
|
}
|
|
return new ImageSaver(mHdr, mImage, mFile, mCaptureResult, mCharacteristics, mContext,
|
|
mReader);
|
|
}
|
|
|
|
public synchronized String getSaveLocation() {
|
|
return (mFile == null) ? "Unknown" : mFile.toString();
|
|
}
|
|
|
|
private boolean isComplete() {
|
|
return mImage != null && mFile != null && mCaptureResult != null
|
|
&& mCharacteristics != null;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Utility classes and methods:
|
|
// *********************************************************************************************
|
|
|
|
/**
|
|
* Comparator based on area of the given {@link Size} objects.
|
|
*/
|
|
static class CompareSizesByArea implements Comparator<Size> {
|
|
|
|
@Override
|
|
public int compare(Size lhs, Size rhs) {
|
|
// We cast here to ensure the multiplications won't overflow
|
|
return Long.signum((long) lhs.getWidth() * lhs.getHeight() -
|
|
(long) rhs.getWidth() * rhs.getHeight());
|
|
}
|
|
|
|
}
|
|
|
|
/**
|
|
* A dialog fragment for displaying non-recoverable errors; this {@ling Activity} will be
|
|
* finished once the dialog has been acknowledged by the user.
|
|
*/
|
|
public static class ErrorDialog extends DialogFragment {
|
|
|
|
private String mErrorMessage;
|
|
|
|
public ErrorDialog() {
|
|
mErrorMessage = "Unknown error occurred!";
|
|
}
|
|
|
|
// Build a dialog with a custom message (Fragments require default constructor).
|
|
public static ErrorDialog buildErrorDialog(String errorMessage) {
|
|
ErrorDialog dialog = new ErrorDialog();
|
|
dialog.mErrorMessage = errorMessage;
|
|
return dialog;
|
|
}
|
|
|
|
@Override
|
|
public Dialog onCreateDialog(Bundle savedInstanceState) {
|
|
final Activity activity = getActivity();
|
|
return new AlertDialog.Builder(activity)
|
|
.setMessage(mErrorMessage)
|
|
.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() {
|
|
@Override
|
|
public void onClick(DialogInterface dialogInterface, int i) {
|
|
activity.finish();
|
|
}
|
|
})
|
|
.create();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* A wrapper for an {@link AutoCloseable} object that implements reference counting to allow
|
|
* for resource management.
|
|
*/
|
|
public static class RefCountedAutoCloseable<T extends AutoCloseable> implements AutoCloseable {
|
|
private T mObject;
|
|
private long mRefCount = 0;
|
|
|
|
/**
|
|
* Wrap the given object.
|
|
*
|
|
* @param object an object to wrap.
|
|
*/
|
|
public RefCountedAutoCloseable(T object) {
|
|
if (object == null) throw new NullPointerException();
|
|
mObject = object;
|
|
}
|
|
|
|
/**
|
|
* Increment the reference count and return the wrapped object.
|
|
*
|
|
* @return the wrapped object, or null if the object has been released.
|
|
*/
|
|
public synchronized T getAndRetain() {
|
|
if (mRefCount < 0) {
|
|
return null;
|
|
}
|
|
mRefCount++;
|
|
return mObject;
|
|
}
|
|
|
|
/**
|
|
* Return the wrapped object.
|
|
*
|
|
* @return the wrapped object, or null if the object has been released.
|
|
*/
|
|
public synchronized T get() {
|
|
return mObject;
|
|
}
|
|
|
|
/**
|
|
* Decrement the reference count and release the wrapped object if there are no other
|
|
* users retaining this object.
|
|
*/
|
|
@Override
|
|
public synchronized void close() {
|
|
if (mRefCount >= 0) {
|
|
mRefCount--;
|
|
if (mRefCount < 0) {
|
|
try {
|
|
mObject.close();
|
|
} catch (Exception e) {
|
|
throw new RuntimeException(e);
|
|
} finally {
|
|
mObject = null;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Given {@code choices} of {@code Size}s supported by a camera, choose the smallest one that
|
|
* is at least as large as the respective texture view size, and that is at most as large as the
|
|
* respective max size, and whose aspect ratio matches with the specified value. If such size
|
|
* doesn't exist, choose the largest one that is at most as large as the respective max size,
|
|
* and whose aspect ratio matches with the specified value.
|
|
*
|
|
* @param choices The list of sizes that the camera supports for the intended output
|
|
* class
|
|
* @param textureViewWidth The width of the texture view relative to sensor coordinate
|
|
* @param textureViewHeight The height of the texture view relative to sensor coordinate
|
|
* @param maxWidth The maximum width that can be chosen
|
|
* @param maxHeight The maximum height that can be chosen
|
|
* @param aspectRatio The aspect ratio
|
|
* @return The optimal {@code Size}, or an arbitrary one if none were big enough
|
|
*/
|
|
private static Size chooseOptimalSize(Size[] choices, int textureViewWidth,
|
|
int textureViewHeight, int maxWidth, int maxHeight, Size aspectRatio) {
|
|
// Collect the supported resolutions that are at least as big as the preview Surface
|
|
List<Size> bigEnough = new ArrayList<>();
|
|
// Collect the supported resolutions that are smaller than the preview Surface
|
|
List<Size> notBigEnough = new ArrayList<>();
|
|
int w = aspectRatio.getWidth();
|
|
int h = aspectRatio.getHeight();
|
|
for (Size option : choices) {
|
|
if (option.getWidth() <= maxWidth && option.getHeight() <= maxHeight &&
|
|
option.getHeight() == option.getWidth() * h / w) {
|
|
if (option.getWidth() >= textureViewWidth &&
|
|
option.getHeight() >= textureViewHeight) {
|
|
bigEnough.add(option);
|
|
} else {
|
|
notBigEnough.add(option);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Pick the smallest of those big enough. If there is no one big enough, pick the
|
|
// largest of those not big enough.
|
|
if (bigEnough.size() > 0) {
|
|
return Collections.min(bigEnough, new CompareSizesByArea());
|
|
} else if (notBigEnough.size() > 0) {
|
|
return Collections.max(notBigEnough, new CompareSizesByArea());
|
|
} else {
|
|
Log.e(TAG, "Couldn't find any suitable preview size");
|
|
return choices[0];
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Generate a string containing a formatted timestamp with the current date and time.
|
|
*
|
|
* @return a {@link String} representing a time.
|
|
*/
|
|
private static String generateTimestamp() {
|
|
SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd_HHmmss_SSS", Locale.US);
|
|
return sdf.format(new Date());
|
|
}
|
|
|
|
/**
|
|
* Cleanup the given {@link OutputStream}.
|
|
*
|
|
* @param outputStream the stream to close.
|
|
*/
|
|
private static void closeOutput(OutputStream outputStream) {
|
|
if (null != outputStream) {
|
|
try {
|
|
outputStream.close();
|
|
} catch (IOException e) {
|
|
e.printStackTrace();
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Return true if the given array contains the given integer.
|
|
*
|
|
* @param modes array to check.
|
|
* @param mode integer to get for.
|
|
* @return true if the array contains the given integer, otherwise false.
|
|
*/
|
|
private static boolean contains(int[] modes, int mode) {
|
|
if (modes == null) {
|
|
return false;
|
|
}
|
|
for (int i : modes) {
|
|
if (i == mode) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Return true if the two given {@link Size}s have the same aspect ratio.
|
|
*
|
|
* @param a first {@link Size} to compare.
|
|
* @param b second {@link Size} to compare.
|
|
* @return true if the sizes have the same aspect ratio, otherwise false.
|
|
*/
|
|
private static boolean checkAspectsEqual(Size a, Size b) {
|
|
double aAspect = a.getWidth() / (double) a.getHeight();
|
|
double bAspect = b.getWidth() / (double) b.getHeight();
|
|
return Math.abs(aAspect - bAspect) <= ASPECT_RATIO_TOLERANCE;
|
|
}
|
|
|
|
private int getRotationAdjustment() {
|
|
return TextUtils.equals(mCameraId, "1") ? 270 : 0;
|
|
}
|
|
|
|
/**
|
|
* Rotation need to transform from the camera sensor orientation to the device's current
|
|
* orientation.
|
|
*
|
|
* @param c the {@link CameraCharacteristics} to query for the camera sensor
|
|
* orientation.
|
|
* @param deviceOrientation the current device orientation relative to the native device
|
|
* orientation.
|
|
* @return the total rotation from the sensor orientation to the current device orientation.
|
|
*/
|
|
private static int sensorToDeviceRotation(CameraCharacteristics c, int deviceOrientation, int adjustment) {
|
|
int sensorOrientation = c.get(CameraCharacteristics.SENSOR_ORIENTATION);
|
|
|
|
// Get device orientation in degrees
|
|
deviceOrientation = ORIENTATIONS.get((deviceOrientation + (adjustment / 90)) % ORIENTATIONS.size());
|
|
|
|
// Reverse device orientation for front-facing cameras
|
|
if (c.get(CameraCharacteristics.LENS_FACING) == CameraCharacteristics.LENS_FACING_FRONT) {
|
|
deviceOrientation = -deviceOrientation;
|
|
}
|
|
|
|
// Calculate desired JPEG orientation relative to camera orientation to make
|
|
// the image upright relative to the device orientation
|
|
|
|
return (sensorOrientation - deviceOrientation + 360) % 360;
|
|
}
|
|
|
|
/**
|
|
* Shows a {@link Toast} on the UI thread.
|
|
*
|
|
* @param text The message to show.
|
|
*/
|
|
private void showToast(String text) {
|
|
// We show a Toast by sending request message to mMessageHandler. This makes sure that the
|
|
// Toast is shown on the UI thread.
|
|
Message message = Message.obtain();
|
|
message.obj = text;
|
|
mMessageHandler.sendMessage(message);
|
|
}
|
|
|
|
/**
|
|
* If the given request has been completed, remove it from the queue of active requests and
|
|
* send an {@link ImageSaver} with the results from this request to a background thread to
|
|
* save a file.
|
|
* <p/>
|
|
* Call this only with {@link #mCameraStateLock} held.
|
|
*
|
|
* @param requestId the ID of the {@link CaptureRequest} to handle.
|
|
* @param builder the {@link ImageSaver.ImageSaverBuilder} for this request.
|
|
* @param queue the queue to remove this request from, if completed.
|
|
*/
|
|
private void handleCompletionLocked(int requestId, ImageSaver.ImageSaverBuilder builder,
|
|
TreeMap<Integer, ImageSaver.ImageSaverBuilder> queue) {
|
|
if (builder == null) return;
|
|
ImageSaver saver = builder.buildIfComplete();
|
|
if (saver != null) {
|
|
queue.remove(requestId);
|
|
AsyncTask.THREAD_POOL_EXECUTOR.execute(saver);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Check if we are using a device that only supports the LEGACY hardware level.
|
|
* <p/>
|
|
* Call this only with {@link #mCameraStateLock} held.
|
|
*
|
|
* @return true if this is a legacy device.
|
|
*/
|
|
private boolean isLegacyLocked() {
|
|
return mCharacteristics.get(CameraCharacteristics.INFO_SUPPORTED_HARDWARE_LEVEL) ==
|
|
CameraCharacteristics.INFO_SUPPORTED_HARDWARE_LEVEL_LEGACY;
|
|
}
|
|
|
|
/**
|
|
* Start the timer for the pre-capture sequence.
|
|
* <p/>
|
|
* Call this only with {@link #mCameraStateLock} held.
|
|
*/
|
|
private void startTimerLocked() {
|
|
mCaptureTimer = SystemClock.elapsedRealtime();
|
|
}
|
|
|
|
/**
|
|
* Check if the timer for the pre-capture sequence has been hit.
|
|
* <p/>
|
|
* Call this only with {@link #mCameraStateLock} held.
|
|
*
|
|
* @return true if the timeout occurred.
|
|
*/
|
|
private boolean hitTimeoutLocked() {
|
|
return (SystemClock.elapsedRealtime() - mCaptureTimer) > PRECAPTURE_TIMEOUT_MS;
|
|
}
|
|
|
|
/**
|
|
* A dialog that explains about the necessary permissions.
|
|
*/
|
|
public static class PermissionConfirmationDialog extends DialogFragment {
|
|
|
|
public static PermissionConfirmationDialog newInstance() {
|
|
return new PermissionConfirmationDialog();
|
|
}
|
|
|
|
@Override
|
|
public Dialog onCreateDialog(Bundle savedInstanceState) {
|
|
final Fragment parent = getParentFragment();
|
|
return new AlertDialog.Builder(getActivity())
|
|
.setMessage(R.string.request_permission)
|
|
.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() {
|
|
@Override
|
|
public void onClick(DialogInterface dialog, int which) {
|
|
// FragmentCompat.requestPermissions(parent, CAMERA_PERMISSIONS,
|
|
// REQUEST_CAMERA_PERMISSIONS);
|
|
}
|
|
})
|
|
.setNegativeButton(android.R.string.cancel,
|
|
new DialogInterface.OnClickListener() {
|
|
@Override
|
|
public void onClick(DialogInterface dialog, int which) {
|
|
getActivity().finish();
|
|
}
|
|
})
|
|
.create();
|
|
}
|
|
|
|
}
|
|
|
|
}
|