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1364 lines
47 KiB
1364 lines
47 KiB
package com.otaliastudios.cameraview;
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import android.Manifest;
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import android.annotation.TargetApi;
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import android.app.Activity;
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import android.content.Context;
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import android.content.ContextWrapper;
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import android.content.pm.PackageInfo;
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import android.content.pm.PackageManager;
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import android.content.res.TypedArray;
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import android.graphics.PointF;
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import android.graphics.Rect;
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import android.graphics.YuvImage;
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import android.os.Build;
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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.support.annotation.NonNull;
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import android.support.annotation.Nullable;
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import android.util.AttributeSet;
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import android.util.Log;
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import android.view.MotionEvent;
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import android.view.ViewGroup;
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import android.view.WindowManager;
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import android.widget.FrameLayout;
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import java.io.ByteArrayOutputStream;
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import java.io.File;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.List;
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import static com.otaliastudios.cameraview.CameraConstants.*;
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import static android.view.View.MeasureSpec.AT_MOST;
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import static android.view.View.MeasureSpec.EXACTLY;
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import static android.view.View.MeasureSpec.UNSPECIFIED;
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import static android.view.ViewGroup.LayoutParams.MATCH_PARENT;
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public class CameraView extends FrameLayout {
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private final static String TAG = CameraView.class.getSimpleName();
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private Handler mWorkerHandler;
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private Handler getWorkerHandler() {
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synchronized (this) {
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if (mWorkerHandler == null) {
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HandlerThread workerThread = new HandlerThread("CameraViewWorker");
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workerThread.setDaemon(true);
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workerThread.start();
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mWorkerHandler = new Handler(workerThread.getLooper());
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}
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}
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return mWorkerHandler;
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}
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private void run(Runnable runnable) {
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getWorkerHandler().post(runnable);
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}
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private int mJpegQuality;
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private boolean mCropOutput;
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private CameraCallbacks mCameraCallbacks;
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private OrientationHelper mOrientationHelper;
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private CameraController mCameraController;
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private Preview mPreviewImpl;
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private GridLinesLayout mGridLinesLayout;
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private PinchGestureLayout mPinchGestureLayout;
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private TapGestureLayout mTapGestureLayout;
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private boolean mIsStarted;
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private boolean mKeepScreenOn;
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private float mZoomValue;
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private float mExposureCorrectionValue;
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private HashMap<Gesture, GestureAction> mGestureMap = new HashMap<>(4);
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public CameraView(@NonNull Context context) {
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super(context, null);
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init(context, null);
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}
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public CameraView(@NonNull Context context, @Nullable AttributeSet attrs) {
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super(context, attrs);
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init(context, attrs);
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}
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@SuppressWarnings("WrongConstant")
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private void init(@NonNull Context context, @Nullable AttributeSet attrs) {
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TypedArray a = context.getTheme().obtainStyledAttributes(attrs, R.styleable.CameraView, 0, 0);
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Facing facing = Facing.fromValue(a.getInteger(R.styleable.CameraView_cameraFacing, Facing.DEFAULT.value()));
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Flash flash = Flash.fromValue(a.getInteger(R.styleable.CameraView_cameraFlash, Flash.DEFAULT.value()));
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Grid grid = Grid.fromValue(a.getInteger(R.styleable.CameraView_cameraGrid, Grid.DEFAULT.value()));
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int sessionType = a.getInteger(R.styleable.CameraView_cameraSessionType, Defaults.DEFAULT_SESSION_TYPE);
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int whiteBalance = a.getInteger(R.styleable.CameraView_cameraWhiteBalance, Defaults.DEFAULT_WHITE_BALANCE);
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int videoQuality = a.getInteger(R.styleable.CameraView_cameraVideoQuality, Defaults.DEFAULT_VIDEO_QUALITY);
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mJpegQuality = a.getInteger(R.styleable.CameraView_cameraJpegQuality, Defaults.DEFAULT_JPEG_QUALITY);
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mCropOutput = a.getBoolean(R.styleable.CameraView_cameraCropOutput, Defaults.DEFAULT_CROP_OUTPUT);
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GestureAction tapGesture = GestureAction.fromValue(a.getInteger(R.styleable.CameraView_cameraGestureTap, GestureAction.DEFAULT_TAP.value()));
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GestureAction longTapGesture = GestureAction.fromValue(a.getInteger(R.styleable.CameraView_cameraGestureLongTap, GestureAction.DEFAULT_LONG_TAP.value()));
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GestureAction pinchGesture = GestureAction.fromValue(a.getInteger(R.styleable.CameraView_cameraGesturePinch, GestureAction.DEFAULT_PINCH.value()));
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a.recycle();
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mCameraCallbacks = new CameraCallbacks();
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mPreviewImpl = new TextureViewPreview(context, this);
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mCameraController = new Camera1(mCameraCallbacks, mPreviewImpl);
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mGridLinesLayout = new GridLinesLayout(context);
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mPinchGestureLayout = new PinchGestureLayout(context);
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mTapGestureLayout = new TapGestureLayout(context);
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addView(mGridLinesLayout);
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addView(mPinchGestureLayout);
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addView(mTapGestureLayout);
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mIsStarted = false;
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setFacing(facing);
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setFlash(flash);
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setSessionType(sessionType);
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setVideoQuality(videoQuality);
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setWhiteBalance(whiteBalance);
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setGrid(grid);
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mapGesture(Gesture.TAP, tapGesture);
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// mapGesture(Gesture.DOUBLE_TAP, doubleTapGesture);
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mapGesture(Gesture.LONG_TAP, longTapGesture);
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mapGesture(Gesture.PINCH, pinchGesture);
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if (!isInEditMode()) {
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mOrientationHelper = new OrientationHelper(context) {
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@Override
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public void onDisplayOffsetChanged(int displayOffset) {
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mCameraController.onDisplayOffset(displayOffset);
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mPreviewImpl.onDisplayOffset(displayOffset);
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}
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@Override
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protected void onDeviceOrientationChanged(int deviceOrientation) {
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mCameraController.onDeviceOrientation(deviceOrientation);
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mPreviewImpl.onDeviceOrientation(deviceOrientation);
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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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protected void onAttachedToWindow() {
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super.onAttachedToWindow();
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if (!isInEditMode()) {
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WindowManager manager = (WindowManager) getContext().getSystemService(Context.WINDOW_SERVICE);
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mOrientationHelper.enable(manager.getDefaultDisplay());
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}
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}
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@Override
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protected void onDetachedFromWindow() {
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if (!isInEditMode()) {
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mOrientationHelper.disable();
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}
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super.onDetachedFromWindow();
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}
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// Smart measuring behavior
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// ------------------------
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private String ms(int mode) {
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switch (mode) {
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case AT_MOST: return "AT_MOST";
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case EXACTLY: return "EXACTLY";
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case UNSPECIFIED: return "UNSPECIFIED";
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}
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return null;
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}
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/**
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* Measuring is basically controlled by layout params width and height.
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* The basic semantics are:
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*
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* - MATCH_PARENT: CameraView should completely fill this dimension, even if this might mean
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* not respecting the preview aspect ratio.
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* - WRAP_CONTENT: CameraView should try to adapt this dimension to respect the preview
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* aspect ratio.
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*
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* When both dimensions are MATCH_PARENT, CameraView will fill its
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* parent no matter the preview. Thanks to what happens in {@link Preview}, this acts like
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* a CENTER CROP scale type.
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*
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* When both dimensions are WRAP_CONTENT, CameraView will take the biggest dimensions that
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* fit the preview aspect ratio. This acts like a CENTER INSIDE scale type.
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*/
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@Override
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protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
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Size previewSize = getPreviewSize();
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if (previewSize == null) {
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Log.e(TAG, "onMeasure, surface is not ready. Calling default behavior.");
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super.onMeasure(widthMeasureSpec, heightMeasureSpec);
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return;
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}
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// Let's which dimensions need to be adapted.
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int widthMode = MeasureSpec.getMode(widthMeasureSpec);
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int heightMode = MeasureSpec.getMode(heightMeasureSpec);
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final int widthValue = MeasureSpec.getSize(widthMeasureSpec);
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final int heightValue = MeasureSpec.getSize(heightMeasureSpec);
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final boolean flip = mCameraController.shouldFlipSizes();
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final float previewWidth = flip ? previewSize.getHeight() : previewSize.getWidth();
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final float previewHeight = flip ? previewSize.getWidth() : previewSize.getHeight();
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// If MATCH_PARENT is interpreted as AT_MOST, transform to EXACTLY
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// to be consistent with our semantics.
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final ViewGroup.LayoutParams lp = getLayoutParams();
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if (widthMode == AT_MOST && lp.width == MATCH_PARENT) widthMode = EXACTLY;
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if (heightMode == AT_MOST && lp.height == MATCH_PARENT) heightMode = EXACTLY;
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Log.e(TAG, "onMeasure, requested dimensions are (" +
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widthValue + "[" + ms(widthMode) + "]x" +
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heightValue + "[" + ms(heightMode) + "])");
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Log.e(TAG, "onMeasure, previewSize is (" + previewWidth + "x" + previewHeight + ")");
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// If we have fixed dimensions (either 300dp or MATCH_PARENT), there's nothing we should do,
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// other than respect it. The preview will eventually be cropped at the sides (by PreviewImpl scaling)
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// except the case in which these fixed dimensions somehow fit exactly the preview aspect ratio.
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if (widthMode == EXACTLY && heightMode == EXACTLY) {
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Log.e(TAG, "onMeasure, both are MATCH_PARENT or fixed value. We adapt. This means CROP_INSIDE. " +
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"(" + widthValue + "x" + heightValue + ")");
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super.onMeasure(widthMeasureSpec, heightMeasureSpec);
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return;
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}
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// If both dimensions are free, with no limits, then our size will be exactly the
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// preview size. This can happen rarely, for example in scrollable containers.
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if (widthMode == UNSPECIFIED && heightMode == UNSPECIFIED) {
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Log.e(TAG, "onMeasure, both are completely free. We respect that and extend to the whole preview size. " +
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"(" + previewWidth + "x" + previewHeight + ")");
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super.onMeasure(MeasureSpec.makeMeasureSpec((int) previewWidth, EXACTLY),
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MeasureSpec.makeMeasureSpec((int) previewHeight, EXACTLY));
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return;
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}
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// It sure now that at least one dimension can be determined (either because EXACTLY or AT_MOST).
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// This starts to seem a pleasant situation.
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// If one of the dimension is completely free, take the other and fit the ratio.
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// One of the two might be AT_MOST, but we use the value anyway.
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float ratio = previewHeight / previewWidth;
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if (widthMode == UNSPECIFIED || heightMode == UNSPECIFIED) {
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boolean freeWidth = widthMode == UNSPECIFIED;
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int height, width;
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if (freeWidth) {
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height = heightValue;
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width = (int) (height / ratio);
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} else {
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width = widthValue;
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height = (int) (width * ratio);
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}
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Log.e(TAG, "onMeasure, one dimension was free, we adapted it to fit the aspect ratio. " +
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"(" + width + "x" + height + ")");
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super.onMeasure(MeasureSpec.makeMeasureSpec(width, EXACTLY),
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MeasureSpec.makeMeasureSpec(height, EXACTLY));
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return;
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}
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// At this point both dimensions are either AT_MOST-AT_MOST, EXACTLY-AT_MOST or AT_MOST-EXACTLY.
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// Let's manage this sanely. If only one is EXACTLY, we can TRY to fit the aspect ratio,
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// but it is not guaranteed to succeed. It depends on the AT_MOST value of the other dimensions.
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if (widthMode == EXACTLY || heightMode == EXACTLY) {
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boolean freeWidth = widthMode == AT_MOST;
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int height, width;
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if (freeWidth) {
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height = heightValue;
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width = Math.min((int) (height / ratio), widthValue);
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} else {
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width = widthValue;
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height = Math.min((int) (width * ratio), heightValue);
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}
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Log.e(TAG, "onMeasure, one dimension was EXACTLY, another AT_MOST. We have TRIED to fit " +
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"the aspect ratio, but it's not guaranteed. (" + width + "x" + height + ")");
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super.onMeasure(MeasureSpec.makeMeasureSpec(width, EXACTLY),
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MeasureSpec.makeMeasureSpec(height, EXACTLY));
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return;
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}
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// Last case, AT_MOST and AT_MOST. Here we can SURELY fit the aspect ratio by filling one
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// dimension and adapting the other.
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int height, width;
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float atMostRatio = heightValue / widthValue;
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if (atMostRatio >= ratio) {
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// We must reduce height.
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width = widthValue;
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height = (int) (width * ratio);
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} else {
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height = heightValue;
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width = (int) (height / ratio);
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}
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Log.e(TAG, "onMeasure, both dimension were AT_MOST. We fit the preview aspect ratio. " +
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"(" + width + "x" + height + ")");
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super.onMeasure(MeasureSpec.makeMeasureSpec(width, EXACTLY),
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MeasureSpec.makeMeasureSpec(height, EXACTLY));
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}
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// Gesture APIs and touch control
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// ------------------------------
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/**
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* Maps a {@link Gesture} to a certain gesture action.
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* For example, you can assign zoom control to the pinch gesture by just calling:
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* <code>
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* cameraView.mapGesture(Gesture.PINCH, CameraConstants.GESTURE_ACTION_ZOOM);
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* </code>
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*
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* Not all actions can be assigned to a certain gesture. For example, zoom control can't be
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* assigned to the Gesture.TAP gesture. Look at {@link Gesture} to know more.
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* This method returns false if they are not assignable.
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*
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* @param gesture which gesture to map
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* @param action which action should be assigned
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* @return true if this action could be assigned to this gesture
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*/
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public boolean mapGesture(@NonNull Gesture gesture, GestureAction action) {
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if (gesture.isAssignableTo(action)) {
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mGestureMap.put(gesture, action);
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switch (gesture) {
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case PINCH:
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mPinchGestureLayout.enable(mGestureMap.get(Gesture.PINCH) != GestureAction.NONE);
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break;
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case TAP:
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// case DOUBLE_TAP:
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case LONG_TAP:
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mTapGestureLayout.enable(mGestureMap.get(Gesture.TAP) != GestureAction.NONE ||
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// mGestureMap.get(Gesture.DOUBLE_TAP) != GestureAction.NONE ||
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mGestureMap.get(Gesture.LONG_TAP) != GestureAction.NONE);
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break;
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}
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return true;
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}
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mapGesture(gesture, GestureAction.NONE);
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return false;
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}
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/**
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* Clears any action mapped to the given gesture.
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* @param gesture which gesture to clear
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*/
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public void clearGesture(@NonNull Gesture gesture) {
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mGestureMap.put(gesture, GestureAction.NONE);
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}
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@Override
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public boolean onInterceptTouchEvent(MotionEvent ev) {
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return true; // Steal our own events.
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}
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@Override
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public boolean onTouchEvent(MotionEvent event) {
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if (!mCameraController.isCameraOpened()) return true;
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CameraOptions options = mCameraController.getCameraOptions(); // Non null
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if (mPinchGestureLayout.onTouchEvent(event)) {
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GestureAction action = mGestureMap.get(Gesture.PINCH);
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// This currently can be zoom or AE.
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// Camera can either support these or not.
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if (action == GestureAction.ZOOM) {
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float oldValue = mZoomValue;
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float newValue = mPinchGestureLayout.scaleValue(oldValue, 0, 1);
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PointF[] points = mPinchGestureLayout.getPoints();
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if (mCameraController.setZoom(newValue)) {
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mZoomValue = newValue;
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mCameraCallbacks.dispatchOnZoomChanged(newValue, points);
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}
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} else if (action == GestureAction.EXPOSURE_CORRECTION) {
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float oldValue = mExposureCorrectionValue;
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float minValue = options.getExposureCorrectionMinValue();
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float maxValue = options.getExposureCorrectionMaxValue();
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float newValue = mPinchGestureLayout.scaleValue(oldValue, minValue, maxValue);
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PointF[] points = mPinchGestureLayout.getPoints();
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float[] bounds = new float[]{minValue, maxValue};
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if (mCameraController.setExposureCorrection(newValue)) {
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mExposureCorrectionValue = newValue;
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mCameraCallbacks.dispatchOnExposureCorrectionChanged(newValue, bounds, points);
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}
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}
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} else if (mTapGestureLayout.onTouchEvent(event)) {
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Gesture gesture = mTapGestureLayout.getGestureType();
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GestureAction action = mGestureMap.get(gesture);
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// This currently can be capture, focus or focusWithMaker.
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// Camera can either support these or not.
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if (action == GestureAction.CAPTURE) {
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capturePicture();
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} else if (action == GestureAction.FOCUS ||
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action == GestureAction.FOCUS_WITH_MARKER) {
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PointF point = mTapGestureLayout.getPoint();
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mCameraController.startAutoFocus(gesture, point); // This will call onFocusStart and onFocusEnd
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}
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}
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return true;
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}
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// Lifecycle APIs
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// --------------
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/**
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* Returns whether the camera has started showing its preview.
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* @return whether the camera has started
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*/
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public boolean isStarted() {
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return mIsStarted;
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}
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/**
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* Starts the camera preview, if not started already.
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* This should be called onResume(), or when you are ready with permissions.
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*/
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public void start() {
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if (mIsStarted || !isEnabled()) {
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// Already started, do nothing.
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return;
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}
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if (checkPermissions(getSessionType())) {
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mIsStarted = true;
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run(new Runnable() {
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@Override
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public void run() {
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mCameraController.start();
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}
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});
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}
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}
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/**
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* Checks that we have appropriate permissions for this session type.
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* Throws if session = audio and manifest did not add the microphone permissions.
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* @return true if we can go on, false otherwise.
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*/
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private boolean checkPermissions(@SessionType int sessionType) {
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checkPermissionsManifestOrThrow(sessionType);
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boolean api23 = Build.VERSION.SDK_INT >= Build.VERSION_CODES.M;
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int cameraCheck, audioCheck;
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if (!api23) {
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cameraCheck = PackageManager.PERMISSION_GRANTED;
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audioCheck = PackageManager.PERMISSION_GRANTED;
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} else {
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//noinspection all
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cameraCheck = getContext().checkSelfPermission(Manifest.permission.CAMERA);
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//noinspection all
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audioCheck = getContext().checkSelfPermission(Manifest.permission.RECORD_AUDIO);
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}
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switch (sessionType) {
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case SESSION_TYPE_VIDEO:
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if (cameraCheck != PackageManager.PERMISSION_GRANTED || audioCheck != PackageManager.PERMISSION_GRANTED) {
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requestPermissions(true, true);
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return false;
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}
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break;
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case SESSION_TYPE_PICTURE:
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if (cameraCheck != PackageManager.PERMISSION_GRANTED) {
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requestPermissions(true, false);
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return false;
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}
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break;
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}
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return true;
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}
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/**
|
|
* If mSessionType == SESSION_TYPE_VIDEO we will ask for RECORD_AUDIO permission.
|
|
* If the developer did not add this to its manifest, throw and fire warnings.
|
|
* (Hoping this is not cought elsewhere... we should test).
|
|
*/
|
|
private void checkPermissionsManifestOrThrow(@SessionType int sessionType) {
|
|
if (sessionType == SESSION_TYPE_VIDEO) {
|
|
try {
|
|
PackageManager manager = getContext().getPackageManager();
|
|
PackageInfo info = manager.getPackageInfo(getContext().getPackageName(), PackageManager.GET_PERMISSIONS);
|
|
for (String requestedPermission : info.requestedPermissions) {
|
|
if (requestedPermission.equals(Manifest.permission.RECORD_AUDIO)) {
|
|
return;
|
|
}
|
|
}
|
|
String message = "When the session type is set to video, the RECORD_AUDIO permission " +
|
|
"should be added to the application manifest file.";
|
|
Log.w(TAG, message);
|
|
throw new IllegalStateException(message);
|
|
} catch (PackageManager.NameNotFoundException e) {
|
|
// Not possible.
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Stops the current preview, if any was started.
|
|
* This should be called onPause().
|
|
*/
|
|
public void stop() {
|
|
if (!mIsStarted) {
|
|
// Already stopped, do nothing.
|
|
return;
|
|
}
|
|
mIsStarted = false;
|
|
mCameraController.stop();
|
|
}
|
|
|
|
public void destroy() {
|
|
mCameraCallbacks.clearListeners(); // Release inner listener.
|
|
// This might be useless, but no time to think about it now.
|
|
mWorkerHandler = null;
|
|
}
|
|
|
|
|
|
// Public APIs for parameters and controls
|
|
// ---------------------------------------
|
|
|
|
|
|
/**
|
|
* Returns a {@link CameraOptions} instance holding supported options for this camera
|
|
* session. This might change over time. It's better to hold a reference from
|
|
* {@link CameraListener#onCameraOpened(CameraOptions)}.
|
|
*
|
|
* @return an options map, or null if camera was not opened
|
|
*/
|
|
@Nullable
|
|
public CameraOptions getCameraOptions() {
|
|
return mCameraController.getCameraOptions();
|
|
}
|
|
|
|
|
|
/**
|
|
* If present, returns a collection of extra properties from the current camera
|
|
* session.
|
|
* @return an ExtraProperties object.
|
|
*/
|
|
@Nullable
|
|
public ExtraProperties getExtraProperties() {
|
|
return mCameraController.getExtraProperties();
|
|
}
|
|
|
|
|
|
/**
|
|
* Sets exposure adjustment, in EV stops. A positive value will mean brighter picture.
|
|
*
|
|
* If camera is not opened, this will have no effect.
|
|
* If {@link CameraOptions#isExposureCorrectionSupported()} is false, this will have no effect.
|
|
* The provided value should be between the bounds returned by {@link CameraOptions}, or it will
|
|
* be capped.
|
|
*
|
|
* @see CameraOptions#getExposureCorrectionMinValue()
|
|
* @see CameraOptions#getExposureCorrectionMaxValue()
|
|
*
|
|
* @param EVvalue exposure correction value.
|
|
*/
|
|
public void setExposureCorrection(float EVvalue) {
|
|
CameraOptions options = getCameraOptions();
|
|
if (options != null) {
|
|
float min = options.getExposureCorrectionMinValue();
|
|
float max = options.getExposureCorrectionMaxValue();
|
|
if (EVvalue < min) EVvalue = min;
|
|
if (EVvalue > max) EVvalue = max;
|
|
if (mCameraController.setExposureCorrection(EVvalue)) {
|
|
mExposureCorrectionValue = EVvalue;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Returns the current exposure correction value, typically 0
|
|
* at start-up.
|
|
* @return the current exposure correction value
|
|
*/
|
|
public float getExposureCorrection() {
|
|
return mExposureCorrectionValue;
|
|
}
|
|
|
|
|
|
/**
|
|
* Sets a zoom value. This is not guaranteed to be supported by the current device,
|
|
* but you can take a look at {@link CameraOptions#isZoomSupported()}.
|
|
* This will have no effect if called before the camera is opened.
|
|
*
|
|
* Zoom value should be between 0 and 1, where 1 will be the maximum available zoom.
|
|
* If it's not, it will be capped.
|
|
*
|
|
* @param zoom value in [0,1]
|
|
*/
|
|
public void setZoom(float zoom) {
|
|
if (zoom < 0) zoom = 0;
|
|
if (zoom > 1) zoom = 1;
|
|
if (mCameraController.setZoom(zoom)) {
|
|
mZoomValue = zoom;
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Returns the current zoom value, something between 0 and 1.
|
|
* @return the current zoom value
|
|
*/
|
|
public float getZoom() {
|
|
return mZoomValue;
|
|
}
|
|
|
|
|
|
/**
|
|
* Controls the grids to be drawn over the current layout.
|
|
*
|
|
* @see Grid#OFF
|
|
* @see Grid#DRAW_3X3
|
|
* @see Grid#DRAW_4X4
|
|
* @see Grid#DRAW_PHI
|
|
*
|
|
* @param gridMode desired grid mode
|
|
*/
|
|
public void setGrid(Grid gridMode) {
|
|
mGridLinesLayout.setGridMode(gridMode);
|
|
}
|
|
|
|
|
|
/**
|
|
* Gets the current grid mode.
|
|
* @return the current grid mode
|
|
*/
|
|
public Grid getGrid() {
|
|
return mGridLinesLayout.getGridMode();
|
|
}
|
|
|
|
|
|
/**
|
|
* Set location coordinates to be found later in the jpeg EXIF header
|
|
*
|
|
* @param latitude current latitude
|
|
* @param longitude current longitude
|
|
*/
|
|
public void setLocation(double latitude, double longitude) {
|
|
mCameraController.setLocation(latitude, longitude);
|
|
}
|
|
|
|
|
|
/**
|
|
* Sets desired white balance to current camera session.
|
|
*
|
|
* @see CameraConstants#WHITE_BALANCE_AUTO
|
|
* @see CameraConstants#WHITE_BALANCE_CLOUDY
|
|
* @see CameraConstants#WHITE_BALANCE_DAYLIGHT
|
|
* @see CameraConstants#WHITE_BALANCE_FLUORESCENT
|
|
* @see CameraConstants#WHITE_BALANCE_INCANDESCENT
|
|
*
|
|
* @param whiteBalance desired white balance behavior.
|
|
*/
|
|
public void setWhiteBalance(@WhiteBalance int whiteBalance) {
|
|
mCameraController.setWhiteBalance(whiteBalance);
|
|
}
|
|
|
|
|
|
/**
|
|
* Returns the current white balance behavior.
|
|
* @return white balance value.
|
|
*/
|
|
@WhiteBalance
|
|
public int getWhiteBalance() {
|
|
return mCameraController.getWhiteBalance();
|
|
}
|
|
|
|
|
|
/**
|
|
* Sets which camera sensor should be used.
|
|
*
|
|
* @see Facing#FRONT
|
|
* @see Facing#BACK
|
|
*
|
|
* @param facing a facing value.
|
|
*/
|
|
public void setFacing(final Facing facing) {
|
|
run(new Runnable() {
|
|
@Override
|
|
public void run() {
|
|
mCameraController.setFacing(facing);
|
|
}
|
|
});
|
|
}
|
|
|
|
|
|
/**
|
|
* Gets the facing camera currently being used.
|
|
* @return a facing value.
|
|
*/
|
|
public Facing getFacing() {
|
|
return mCameraController.getFacing();
|
|
}
|
|
|
|
|
|
/**
|
|
* Toggles the facing value between {@link Facing#BACK}
|
|
* and {@link Facing#FRONT}.
|
|
*
|
|
* @return the new facing value
|
|
*/
|
|
public Facing toggleFacing() {
|
|
Facing facing = mCameraController.getFacing();
|
|
switch (facing) {
|
|
case BACK:
|
|
setFacing(Facing.FRONT);
|
|
break;
|
|
|
|
case FRONT:
|
|
setFacing(Facing.BACK);
|
|
break;
|
|
}
|
|
|
|
return mCameraController.getFacing();
|
|
}
|
|
|
|
|
|
/**
|
|
* Sets the flash mode.
|
|
*
|
|
* @see Flash#OFF
|
|
* @see Flash#ON
|
|
* @see Flash#AUTO
|
|
* @see Flash#TORCH
|
|
|
|
* @param flash desired flash mode.
|
|
*/
|
|
public void setFlash(Flash flash) {
|
|
mCameraController.setFlash(flash);
|
|
}
|
|
|
|
|
|
/**
|
|
* Gets the current flash mode.
|
|
* @return a flash mode
|
|
*/
|
|
public Flash getFlash() {
|
|
return mCameraController.getFlash();
|
|
}
|
|
|
|
|
|
/**
|
|
* Toggles the flash mode between {@link Flash#OFF},
|
|
* {@link Flash#ON} and {@link Flash#AUTO}, in this order.
|
|
*
|
|
* @return the new flash value
|
|
*/
|
|
public Flash toggleFlash() {
|
|
Flash flash = mCameraController.getFlash();
|
|
switch (flash) {
|
|
case OFF:
|
|
setFlash(Flash.ON);
|
|
break;
|
|
|
|
case ON:
|
|
setFlash(Flash.AUTO);
|
|
break;
|
|
|
|
case AUTO:
|
|
case TORCH:
|
|
setFlash(Flash.OFF);
|
|
break;
|
|
}
|
|
|
|
return mCameraController.getFlash();
|
|
}
|
|
|
|
|
|
/**
|
|
* Starts an autofocus process at the given coordinates, with respect
|
|
* to the view width and height.
|
|
*
|
|
* @param x should be between 0 and getWidth()
|
|
* @param y should be between 0 and getHeight()
|
|
*/
|
|
public void startAutoFocus(float x, float y) {
|
|
if (x < 0 || x > getWidth()) throw new IllegalArgumentException("x should be >= 0 and <= getWidth()");
|
|
if (y < 0 || y > getHeight()) throw new IllegalArgumentException("y should be >= 0 and <= getHeight()");
|
|
mCameraController.startAutoFocus(null, new PointF(x, y));
|
|
}
|
|
|
|
|
|
/**
|
|
* Set the current session type to either picture or video.
|
|
* When sessionType is video,
|
|
* - {@link #startCapturingVideo(File)} will not throw any exception
|
|
* - {@link #capturePicture()} will fallback to {@link #captureSnapshot()}
|
|
*
|
|
* @see CameraConstants#SESSION_TYPE_PICTURE
|
|
* @see CameraConstants#SESSION_TYPE_VIDEO
|
|
*
|
|
* @param sessionType desired session type.
|
|
*/
|
|
public void setSessionType(@SessionType int sessionType) {
|
|
|
|
if (sessionType == getSessionType() || !mIsStarted) {
|
|
// Check did took place, or will happen on start().
|
|
mCameraController.setSessionType(sessionType);
|
|
|
|
} else if (checkPermissions(sessionType)) {
|
|
// Camera is running. CameraImpl setSessionType will do the trick.
|
|
mCameraController.setSessionType(sessionType);
|
|
|
|
} else {
|
|
// This means that the audio permission is being asked.
|
|
// Stop the camera so it can be restarted by the developer onPermissionResult.
|
|
// Developer must also set the session type again...
|
|
// Not ideal but good for now.
|
|
stop();
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Gets the current session type.
|
|
* @return the current session type
|
|
*/
|
|
@SessionType
|
|
public int getSessionType() {
|
|
return mCameraController.getSessionType();
|
|
}
|
|
|
|
|
|
/**
|
|
* Sets video recording quality. This is not guaranteed to be supported by current device.
|
|
* If it's not, a lower quality will be chosen, until a supported one is found.
|
|
* If sessionType is video, this might trigger a camera restart and a change in preview size.
|
|
*
|
|
* @see CameraConstants#VIDEO_QUALITY_LOWEST
|
|
* @see CameraConstants#VIDEO_QUALITY_QVGA
|
|
* @see CameraConstants#VIDEO_QUALITY_480P
|
|
* @see CameraConstants#VIDEO_QUALITY_720P
|
|
* @see CameraConstants#VIDEO_QUALITY_1080P
|
|
* @see CameraConstants#VIDEO_QUALITY_2160P
|
|
* @see CameraConstants#VIDEO_QUALITY_HIGHEST
|
|
*
|
|
* @param videoQuality requested video quality
|
|
*/
|
|
public void setVideoQuality(@VideoQuality int videoQuality) {
|
|
mCameraController.setVideoQuality(videoQuality);
|
|
}
|
|
|
|
|
|
/**
|
|
* Gets the current video quality.
|
|
* @return the current video quality
|
|
*/
|
|
@VideoQuality
|
|
public int getVideoQuality() {
|
|
return mCameraController.getVideoQuality();
|
|
}
|
|
|
|
|
|
/**
|
|
* Sets the JPEG compression quality for image outputs.
|
|
* @param jpegQuality a 0-100 integer.
|
|
*/
|
|
public void setJpegQuality(int jpegQuality) {
|
|
if (jpegQuality <= 0 || jpegQuality > 100) {
|
|
throw new IllegalArgumentException("JPEG quality should be > 0 and <= 0");
|
|
}
|
|
mJpegQuality = jpegQuality;
|
|
}
|
|
|
|
|
|
/**
|
|
* Whether we should crop the picture output to match CameraView aspect ratio.
|
|
* This is only relevant if CameraView dimensions were somehow constrained
|
|
* (e.g. by fixed value or MATCH_PARENT) and do not match internal aspect ratio.
|
|
*
|
|
* Please note that this requires additional computations after the picture is taken.
|
|
*
|
|
* @param cropOutput whether to crop
|
|
*/
|
|
public void setCropOutput(boolean cropOutput) {
|
|
this.mCropOutput = cropOutput;
|
|
}
|
|
|
|
|
|
/**
|
|
* Sets a {@link CameraListener} instance to be notified of all
|
|
* interesting events that will happen during the camera lifecycle.
|
|
*
|
|
* @param cameraListener a listener for events.
|
|
* @deprecated use {@link #addCameraListener(CameraListener)} instead.
|
|
*/
|
|
@Deprecated
|
|
public void setCameraListener(CameraListener cameraListener) {
|
|
mCameraCallbacks.clearListeners();
|
|
if (cameraListener != null) {
|
|
mCameraCallbacks.addListener(cameraListener);
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Adds a {@link CameraListener} instance to be notified of all
|
|
* interesting events that happen during the camera lifecycle.
|
|
*
|
|
* @param cameraListener a listener for events.
|
|
*/
|
|
public void addCameraListener(CameraListener cameraListener) {
|
|
if (cameraListener != null) {
|
|
mCameraCallbacks.addListener(cameraListener);
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Remove a {@link CameraListener} that was previously registered.
|
|
*
|
|
* @param cameraListener a listener for events.
|
|
*/
|
|
public void removeCameraListener(CameraListener cameraListener) {
|
|
if (cameraListener != null) {
|
|
mCameraCallbacks.removeListener(cameraListener);
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Clears the list of {@link CameraListener} that are registered
|
|
* to camera events.
|
|
*/
|
|
public void clearCameraListeners() {
|
|
mCameraCallbacks.clearListeners();
|
|
}
|
|
|
|
|
|
/**
|
|
* Asks the camera to capture an image of the current scene.
|
|
* This will trigger {@link CameraListener#onPictureTaken(byte[])} if a listener
|
|
* was registered.
|
|
*
|
|
* Note that if sessionType is {@link CameraConstants#SESSION_TYPE_VIDEO}, this
|
|
* might fall back to {@link #captureSnapshot()} (that is, we might capture a preview frame).
|
|
*
|
|
* @see #captureSnapshot()
|
|
*/
|
|
public void capturePicture() {
|
|
mCameraController.capturePicture();
|
|
}
|
|
|
|
|
|
/**
|
|
* Asks the camera to capture a snapshot of the current preview.
|
|
* This eventually triggers {@link CameraListener#onPictureTaken(byte[])} if a listener
|
|
* was registered.
|
|
*
|
|
* The difference with {@link #capturePicture()} is that this capture is faster, so it might be
|
|
* better on slower cameras, though the result can be generally blurry or low quality.
|
|
*
|
|
* @see #capturePicture()
|
|
*/
|
|
public void captureSnapshot() {
|
|
mCameraController.captureSnapshot();
|
|
}
|
|
|
|
|
|
/**
|
|
* Starts recording a video with selected options, in a file called
|
|
* "video.mp4" in the default folder.
|
|
* This is discouraged, please use {@link #startCapturingVideo(File)} instead.
|
|
*
|
|
* @deprecated see {@link #startCapturingVideo(File)}
|
|
*/
|
|
@Deprecated
|
|
public void startCapturingVideo() {
|
|
startCapturingVideo(null);
|
|
}
|
|
|
|
|
|
/**
|
|
* Starts recording a video with selected options. Video will be written to the given file,
|
|
* so callers should ensure they have appropriate permissions to write to the file.
|
|
*
|
|
* @param file a file where the video will be saved
|
|
*/
|
|
public void startCapturingVideo(File file) {
|
|
if (file == null) {
|
|
file = new File(getContext().getExternalFilesDir(null), "video.mp4");
|
|
}
|
|
if (mCameraController.startVideo(file)) {
|
|
mKeepScreenOn = getKeepScreenOn();
|
|
if (!mKeepScreenOn) setKeepScreenOn(true);
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Starts recording a video with selected options. Video will be written to the given file,
|
|
* so callers should ensure they have appropriate permissions to write to the file.
|
|
* Recording will be automatically stopped after durationMillis, unless
|
|
* {@link #stopCapturingVideo()} is not called meanwhile.
|
|
*
|
|
* @param file a file where the video will be saved
|
|
* @param durationMillis video max duration
|
|
*
|
|
* @throws IllegalArgumentException if durationMillis is less than 500 milliseconds
|
|
*/
|
|
public void startCapturingVideo(File file, long durationMillis) {
|
|
if (durationMillis < 500) {
|
|
throw new IllegalArgumentException("Video duration can't be < 500 milliseconds");
|
|
}
|
|
startCapturingVideo(file);
|
|
postDelayed(new Runnable() {
|
|
@Override
|
|
public void run() {
|
|
stopCapturingVideo();
|
|
}
|
|
}, durationMillis);
|
|
}
|
|
|
|
|
|
// TODO: pauseCapturingVideo and resumeCapturingVideo. There is mediarecorder.pause(), but API 24...
|
|
|
|
|
|
/**
|
|
* Stops capturing video, if there was a video record going on.
|
|
* This will fire {@link CameraListener#onVideoTaken(File)}.
|
|
*/
|
|
public void stopCapturingVideo() {
|
|
mCameraController.endVideo();
|
|
if (getKeepScreenOn() != mKeepScreenOn) setKeepScreenOn(mKeepScreenOn);
|
|
}
|
|
|
|
|
|
/**
|
|
* Returns the size used for the preview,
|
|
* or null if it hasn't been computed (for example if the surface is not ready).
|
|
* @return a Size
|
|
*/
|
|
@Nullable
|
|
public Size getPreviewSize() {
|
|
return mCameraController != null ? mCameraController.getPreviewSize() : null;
|
|
}
|
|
|
|
|
|
/**
|
|
* Returns the size used for the capture,
|
|
* or null if it hasn't been computed yet (for example if the surface is not ready).
|
|
* @return a Size
|
|
*/
|
|
@Nullable
|
|
public Size getCaptureSize() {
|
|
return mCameraController != null ? mCameraController.getCaptureSize() : null;
|
|
}
|
|
|
|
|
|
/**
|
|
* Returns the size used for capturing snapshots.
|
|
* This is equal to {@link #getPreviewSize()}.
|
|
*
|
|
* @return a Size
|
|
*/
|
|
@Nullable
|
|
public Size getSnapshotSize() {
|
|
return getPreviewSize();
|
|
}
|
|
|
|
|
|
// If we end up here, we're in M.
|
|
@TargetApi(Build.VERSION_CODES.M)
|
|
private void requestPermissions(boolean requestCamera, boolean requestAudio) {
|
|
Activity activity = null;
|
|
Context context = getContext();
|
|
while (context instanceof ContextWrapper) {
|
|
if (context instanceof Activity) {
|
|
activity = (Activity) context;
|
|
}
|
|
context = ((ContextWrapper) context).getBaseContext();
|
|
}
|
|
|
|
List<String> permissions = new ArrayList<>();
|
|
if (requestCamera) permissions.add(Manifest.permission.CAMERA);
|
|
if (requestAudio) permissions.add(Manifest.permission.RECORD_AUDIO);
|
|
if (activity != null) {
|
|
activity.requestPermissions(permissions.toArray(new String[permissions.size()]),
|
|
PERMISSION_REQUEST_CODE);
|
|
}
|
|
}
|
|
|
|
|
|
// Callbacks and dispatch
|
|
// ----------------------
|
|
|
|
|
|
class CameraCallbacks {
|
|
|
|
private ArrayList<CameraListener> mListeners;
|
|
private Handler uiHandler;
|
|
|
|
|
|
CameraCallbacks() {
|
|
mListeners = new ArrayList<>(2);
|
|
uiHandler = new Handler(Looper.getMainLooper());
|
|
}
|
|
|
|
|
|
public void dispatchOnCameraOpened(final CameraOptions options) {
|
|
uiHandler.post(new Runnable() {
|
|
@Override
|
|
public void run() {
|
|
for (CameraListener listener : mListeners) {
|
|
listener.onCameraOpened(options);
|
|
}
|
|
}
|
|
});
|
|
}
|
|
|
|
|
|
public void dispatchOnCameraClosed() {
|
|
uiHandler.post(new Runnable() {
|
|
@Override
|
|
public void run() {
|
|
for (CameraListener listener : mListeners) {
|
|
listener.onCameraClosed();
|
|
}
|
|
}
|
|
});
|
|
}
|
|
|
|
|
|
public void onCameraPreviewSizeChanged() {
|
|
// Camera preview size, as returned by getPreviewSize(), has changed.
|
|
// Request a layout pass for onMeasure() to do its stuff.
|
|
// Potentially this will change CameraView size, which changes Surface size,
|
|
// which triggers a new Preview size. But hopefully it will converge.
|
|
requestLayout();
|
|
}
|
|
|
|
|
|
/**
|
|
* What would be great here is to ensure the EXIF tag in the jpeg is consistent with what we expect,
|
|
* and maybe add flipping when we have been using the front camera.
|
|
* Unfortunately this is not easy, because
|
|
* - You can't write EXIF data to a byte[] array, not with support library at least
|
|
* - You don't know what byte[] is, see {@link android.hardware.Camera.Parameters#setRotation(int)}.
|
|
* Sometimes our rotation is encoded in the byte array, sometimes a rotated byte[] is returned.
|
|
* Depends on the hardware.
|
|
*
|
|
* So for now we ignore flipping.
|
|
*
|
|
* @param consistentWithView is the final image (decoded respecting EXIF data) consistent with
|
|
* the view width and height? Or should we flip dimensions to have a
|
|
* consistent measure?
|
|
* @param flipHorizontally whether this picture should be flipped horizontally after decoding,
|
|
* because it was taken with the front camera.
|
|
*/
|
|
public void processImage(final byte[] jpeg, final boolean consistentWithView, final boolean flipHorizontally) {
|
|
getWorkerHandler().post(new Runnable() {
|
|
@Override
|
|
public void run() {
|
|
byte[] jpeg2 = jpeg;
|
|
if (mCropOutput && mPreviewImpl.isCropping()) {
|
|
// If consistent, dimensions of the jpeg Bitmap and dimensions of getWidth(), getHeight()
|
|
// Live in the same reference system.
|
|
int w = consistentWithView ? getWidth() : getHeight();
|
|
int h = consistentWithView ? getHeight() : getWidth();
|
|
AspectRatio targetRatio = AspectRatio.of(w, h);
|
|
Log.e(TAG, "is Consistent? " + consistentWithView);
|
|
Log.e(TAG, "viewWidth? " + getWidth() + ", viewHeight? " + getHeight());
|
|
jpeg2 = CropHelper.cropToJpeg(jpeg, targetRatio, mJpegQuality);
|
|
}
|
|
dispatchOnPictureTaken(jpeg2);
|
|
}
|
|
});
|
|
}
|
|
|
|
|
|
public void processSnapshot(YuvImage yuv, boolean consistentWithView, boolean flipHorizontally) {
|
|
byte[] jpeg;
|
|
if (mCropOutput && mPreviewImpl.isCropping()) {
|
|
int w = consistentWithView ? getWidth() : getHeight();
|
|
int h = consistentWithView ? getHeight() : getWidth();
|
|
AspectRatio targetRatio = AspectRatio.of(w, h);
|
|
jpeg = CropHelper.cropToJpeg(yuv, targetRatio, mJpegQuality);
|
|
} else {
|
|
ByteArrayOutputStream out = new ByteArrayOutputStream();
|
|
yuv.compressToJpeg(new Rect(0, 0, yuv.getWidth(), yuv.getHeight()), mJpegQuality, out);
|
|
jpeg = out.toByteArray();
|
|
}
|
|
dispatchOnPictureTaken(jpeg);
|
|
}
|
|
|
|
|
|
private void dispatchOnPictureTaken(byte[] jpeg) {
|
|
final byte[] data = jpeg;
|
|
uiHandler.post(new Runnable() {
|
|
@Override
|
|
public void run() {
|
|
for (CameraListener listener : mListeners) {
|
|
listener.onPictureTaken(data);
|
|
}
|
|
}
|
|
});
|
|
}
|
|
|
|
|
|
public void dispatchOnVideoTaken(final File video) {
|
|
uiHandler.post(new Runnable() {
|
|
@Override
|
|
public void run() {
|
|
for (CameraListener listener : mListeners) {
|
|
listener.onVideoTaken(video);
|
|
}
|
|
}
|
|
});
|
|
}
|
|
|
|
|
|
public void dispatchOnFocusStart(@Nullable final Gesture gesture, final PointF point) {
|
|
uiHandler.post(new Runnable() {
|
|
@Override
|
|
public void run() {
|
|
if (gesture != null && mGestureMap.get(gesture) == GestureAction.FOCUS_WITH_MARKER) {
|
|
mTapGestureLayout.onFocusStart(point);
|
|
}
|
|
|
|
for (CameraListener listener : mListeners) {
|
|
listener.onFocusStart(point);
|
|
}
|
|
}
|
|
});
|
|
}
|
|
|
|
|
|
public void dispatchOnFocusEnd(@Nullable final Gesture gesture, final boolean success,
|
|
final PointF point) {
|
|
uiHandler.post(new Runnable() {
|
|
@Override
|
|
public void run() {
|
|
if (gesture != null && mGestureMap.get(gesture) == GestureAction.FOCUS_WITH_MARKER) {
|
|
mTapGestureLayout.onFocusEnd(success);
|
|
}
|
|
|
|
for (CameraListener listener : mListeners) {
|
|
listener.onFocusEnd(success, point);
|
|
}
|
|
}
|
|
});
|
|
}
|
|
|
|
|
|
public void dispatchOnZoomChanged(final float newValue, final PointF[] fingers) {
|
|
uiHandler.post(new Runnable() {
|
|
@Override
|
|
public void run() {
|
|
for (CameraListener listener : mListeners) {
|
|
listener.onZoomChanged(newValue, new float[]{0, 1}, fingers);
|
|
}
|
|
}
|
|
});
|
|
}
|
|
|
|
|
|
public void dispatchOnExposureCorrectionChanged(final float newValue,
|
|
final float[] bounds,
|
|
final PointF[] fingers) {
|
|
uiHandler.post(new Runnable() {
|
|
@Override
|
|
public void run() {
|
|
for (CameraListener listener : mListeners) {
|
|
listener.onExposureCorrectionChanged(newValue, bounds, fingers);
|
|
}
|
|
}
|
|
});
|
|
}
|
|
|
|
|
|
private void addListener(@NonNull CameraListener cameraListener) {
|
|
mListeners.add(cameraListener);
|
|
}
|
|
|
|
|
|
private void removeListener(@NonNull CameraListener cameraListener) {
|
|
mListeners.remove(cameraListener);
|
|
}
|
|
|
|
|
|
private void clearListeners() {
|
|
mListeners.clear();
|
|
}
|
|
}
|
|
|
|
|
|
// Deprecated stuff
|
|
// ----------------
|
|
|
|
|
|
/**
|
|
* This does nothing.
|
|
* @deprecated
|
|
* @param focus no-op
|
|
*/
|
|
@Deprecated
|
|
public void setFocus(int focus) {
|
|
}
|
|
|
|
|
|
/**
|
|
* This does nothing.
|
|
* @return no-op
|
|
* @deprecated
|
|
*/
|
|
@Deprecated
|
|
public int getFocus() {
|
|
return 0;
|
|
}
|
|
|
|
|
|
/**
|
|
* This does nothing.
|
|
* @deprecated
|
|
* @param method no-op
|
|
*/
|
|
@Deprecated
|
|
public void setCaptureMethod(int method) {}
|
|
|
|
|
|
/**
|
|
* This does nothing.
|
|
* @deprecated
|
|
* @param permissions no-op
|
|
*/
|
|
@Deprecated
|
|
public void setPermissionPolicy(int permissions) {}
|
|
|
|
|
|
/**
|
|
* Sets the zoom mode for the current session.
|
|
*
|
|
* @param zoom no-op
|
|
* @deprecated use {@link #mapGesture(Gesture, GestureAction)} to map zoom control to gestures
|
|
*/
|
|
@Deprecated
|
|
public void setZoomMode(int zoom) {
|
|
}
|
|
|
|
|
|
/**
|
|
* Gets the current zoom mode.
|
|
* @return no-op
|
|
* @deprecated use {@link #mapGesture(Gesture, GestureAction)} to map zoom control to gestures
|
|
*/
|
|
@Deprecated
|
|
public int getZoomMode() {
|
|
return 0;
|
|
}
|
|
|
|
}
|
|
|