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Merge "[LeAudio] Remove the QrCamera and decorateView in Settings" into tm-dev

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This commit is contained in:
TreeHugger Robot
2022-03-29 06:33:46 +00:00
committed by Android (Google) Code Review
parent 3df6924591 bf99e37329
commit 670016a2ee
10 changed files with 8 additions and 886 deletions
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2
res/layout-land/adb_qrcode_scanner_fragment.xml
View File

@@ -45,7 +45,7 @@
android:id="@+id/preview_view"
android:layout_width="wrap_content"
android:layout_height="match_parent"/>
<com.android.settings.wifi.qrcode.QrDecorateView
<com.android.settingslib.qrcode.QrDecorateView
android:id="@+id/decorate_view"
android:layout_width="wrap_content"
android:layout_height="match_parent"/>

2
res/layout-land/wifi_dpp_qrcode_scanner_fragment.xml
View File

@@ -44,7 +44,7 @@
android:id="@+id/preview_view"
android:layout_width="wrap_content"
android:layout_height="match_parent"/>
<com.android.settings.wifi.qrcode.QrDecorateView
<com.android.settingslib.qrcode.QrDecorateView
android:id="@+id/decorate_view"
android:layout_width="wrap_content"
android:layout_height="match_parent"/>

2
res/layout/adb_qrcode_scanner_fragment.xml
View File

@@ -45,7 +45,7 @@
android:id="@+id/preview_view"
android:layout_width="match_parent"
android:layout_height="@dimen/qrcode_preview_size"/>
<com.android.settings.wifi.qrcode.QrDecorateView
<com.android.settingslib.qrcode.QrDecorateView
android:id="@+id/decorate_view"
android:layout_width="match_parent"
android:layout_height="@dimen/qrcode_preview_size"/>

2
res/layout/wifi_dpp_qrcode_scanner_fragment.xml
View File

@@ -44,7 +44,7 @@
android:id="@+id/preview_view"
android:layout_width="match_parent"
android:layout_height="@dimen/qrcode_preview_size"/>
<com.android.settings.wifi.qrcode.QrDecorateView
<com.android.settingslib.qrcode.QrDecorateView
android:id="@+id/decorate_view"
android:layout_width="match_parent"
android:layout_height="@dimen/qrcode_preview_size"/>

4
src/com/android/settings/development/AdbQrcodeScannerFragment.java
View File

@@ -48,8 +48,8 @@ import com.android.settings.SetupWizardUtils;
import com.android.settings.wifi.dpp.AdbQrCode;
import com.android.settings.wifi.dpp.WifiDppQrCodeBaseFragment;
import com.android.settings.wifi.dpp.WifiNetworkConfig;
import com.android.settings.wifi.qrcode.QrCamera;
import com.android.settings.wifi.qrcode.QrDecorateView;
import com.android.settingslib.qrcode.QrCamera;
import com.android.settingslib.qrcode.QrDecorateView;
import com.google.android.setupdesign.util.ThemeHelper;

4
src/com/android/settings/wifi/dpp/WifiDppQrCodeScannerFragment.java
View File

@@ -56,8 +56,8 @@ import androidx.lifecycle.ViewModelProviders;
import com.android.settings.R;
import com.android.settings.overlay.FeatureFactory;
import com.android.settings.wifi.qrcode.QrCamera;
import com.android.settings.wifi.qrcode.QrDecorateView;
import com.android.settingslib.qrcode.QrCamera;
import com.android.settingslib.qrcode.QrDecorateView;
import com.android.wifitrackerlib.WifiEntry;
import com.android.wifitrackerlib.WifiPickerTracker;

482
src/com/android/settings/wifi/qrcode/QrCamera.java
View File

@@ -1,482 +0,0 @@
/*
* Copyright (C) 2018 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License
*/
package com.android.settings.wifi.qrcode;
import android.content.Context;
import android.content.res.Configuration;
import android.graphics.Matrix;
import android.graphics.Rect;
import android.graphics.SurfaceTexture;
import android.hardware.Camera;
import android.hardware.Camera.CameraInfo;
import android.hardware.Camera.Parameters;
import android.os.AsyncTask;
import android.os.Handler;
import android.os.Message;
import android.util.ArrayMap;
import android.util.Log;
import android.util.Size;
import android.view.Surface;
import android.view.WindowManager;
import androidx.annotation.VisibleForTesting;
import com.google.zxing.BarcodeFormat;
import com.google.zxing.BinaryBitmap;
import com.google.zxing.DecodeHintType;
import com.google.zxing.MultiFormatReader;
import com.google.zxing.ReaderException;
import com.google.zxing.Result;
import com.google.zxing.common.HybridBinarizer;
import java.io.IOException;
import java.lang.ref.WeakReference;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.concurrent.Executors;
import java.util.concurrent.Semaphore;
/**
* Manage the camera for the QR scanner and help the decoder to get the image inside the scanning
* frame. Caller prepares a {@link SurfaceTexture} then call {@link #start(SurfaceTexture)} to
* start QR Code scanning. The scanning result will return by ScannerCallback interface. Caller
* can also call {@link #stop()} to halt QR Code scanning before the result returned.
*/
public class QrCamera extends Handler {
private static final String TAG = "QrCamera";
private static final int MSG_AUTO_FOCUS = 1;
/**
* The max allowed difference between picture size ratio and preview size ratio.
* Uses to filter the picture sizes of similar preview size ratio, for example, if a preview
* size is 1920x1440, MAX_RATIO_DIFF 0.1 could allow picture size of 720x480 or 352x288 or
* 176x44 but not 1920x1080.
*/
private static final double MAX_RATIO_DIFF = 0.1;
private static final long AUTOFOCUS_INTERVAL_MS = 1500L;
private static Map<DecodeHintType, List<BarcodeFormat>> HINTS = new ArrayMap<>();
private static List<BarcodeFormat> FORMATS = new ArrayList<>();
static {
FORMATS.add(BarcodeFormat.QR_CODE);
HINTS.put(DecodeHintType.POSSIBLE_FORMATS, FORMATS);
}
@VisibleForTesting
Camera mCamera;
private Size mPreviewSize;
private WeakReference<Context> mContext;
private ScannerCallback mScannerCallback;
private MultiFormatReader mReader;
private DecodingTask mDecodeTask;
private int mCameraOrientation;
@VisibleForTesting
Camera.Parameters mParameters;
public QrCamera(Context context, ScannerCallback callback) {
mContext = new WeakReference<Context>(context);
mScannerCallback = callback;
mReader = new MultiFormatReader();
mReader.setHints(HINTS);
}
/**
* The function start camera preview and capture pictures to decode QR code continuously in a
* background task.
*
* @param surface The surface to be used for live preview.
*/
public void start(SurfaceTexture surface) {
if (mDecodeTask == null) {
mDecodeTask = new DecodingTask(surface);
// Execute in the separate thread pool to prevent block other AsyncTask.
mDecodeTask.executeOnExecutor(Executors.newSingleThreadExecutor());
}
}
/**
* The function stop camera preview and background decode task. Caller call this function when
* the surface is being destroyed.
*/
public void stop() {
removeMessages(MSG_AUTO_FOCUS);
if (mDecodeTask != null) {
mDecodeTask.cancel(true);
mDecodeTask = null;
}
if (mCamera != null) {
mCamera.stopPreview();
releaseCamera();
}
}
/** The scanner which includes this QrCamera class should implement this */
public interface ScannerCallback {
/**
* The function used to handle the decoding result of the QR code.
*
* @param result the result QR code after decoding.
*/
void handleSuccessfulResult(String result);
/** Request the QR code scanner to handle the failure happened. */
void handleCameraFailure();
/**
* The function used to get the background View size.
*
* @return Includes the background view size.
*/
Size getViewSize();
/**
* The function used to get the frame position inside the view
*
* @param previewSize Is the preview size set by camera
* @param cameraOrientation Is the orientation of current Camera
* @return The rectangle would like to crop from the camera preview shot.
*/
Rect getFramePosition(Size previewSize, int cameraOrientation);
/**
* Sets the transform to associate with preview area.
*
* @param transform The transform to apply to the content of preview
*/
void setTransform(Matrix transform);
/**
* Verify QR code is valid or not. The camera will stop scanning if this callback returns
* true.
*
* @param qrCode The result QR code after decoding.
* @return Returns true if qrCode hold valid information.
*/
boolean isValid(String qrCode);
}
@VisibleForTesting
void setCameraParameter() {
mParameters = mCamera.getParameters();
mPreviewSize = getBestPreviewSize(mParameters);
mParameters.setPreviewSize(mPreviewSize.getWidth(), mPreviewSize.getHeight());
Size pictureSize = getBestPictureSize(mParameters);
mParameters.setPictureSize(pictureSize.getWidth(), pictureSize.getHeight());
final List<String> supportedFlashModes = mParameters.getSupportedFlashModes();
if (supportedFlashModes != null &&
supportedFlashModes.contains(Parameters.FLASH_MODE_OFF)) {
mParameters.setFlashMode(Parameters.FLASH_MODE_OFF);
}
final List<String> supportedFocusModes = mParameters.getSupportedFocusModes();
if (supportedFocusModes.contains(Parameters.FOCUS_MODE_CONTINUOUS_PICTURE)) {
mParameters.setFocusMode(Parameters.FOCUS_MODE_CONTINUOUS_PICTURE);
} else if (supportedFocusModes.contains(Parameters.FOCUS_MODE_AUTO)) {
mParameters.setFocusMode(Parameters.FOCUS_MODE_AUTO);
}
mCamera.setParameters(mParameters);
}
private boolean startPreview() {
if (mContext.get() == null) {
return false;
}
final WindowManager winManager =
(WindowManager) mContext.get().getSystemService(Context.WINDOW_SERVICE);
final int rotation = winManager.getDefaultDisplay().getRotation();
int degrees = 0;
switch (rotation) {
case Surface.ROTATION_0:
degrees = 0;
break;
case Surface.ROTATION_90:
degrees = 90;
break;
case Surface.ROTATION_180:
degrees = 180;
break;
case Surface.ROTATION_270:
degrees = 270;
break;
}
final int rotateDegrees = (mCameraOrientation - degrees + 360) % 360;
mCamera.setDisplayOrientation(rotateDegrees);
mCamera.startPreview();
if (Parameters.FOCUS_MODE_AUTO.equals(mParameters.getFocusMode())) {
mCamera.autoFocus(/* Camera.AutoFocusCallback */ null);
sendMessageDelayed(obtainMessage(MSG_AUTO_FOCUS), AUTOFOCUS_INTERVAL_MS);
}
return true;
}
private class DecodingTask extends AsyncTask<Void, Void, String> {
private QrYuvLuminanceSource mImage;
private SurfaceTexture mSurface;
private DecodingTask(SurfaceTexture surface) {
mSurface = surface;
}
@Override
protected String doInBackground(Void... tmp) {
if (!initCamera(mSurface)) {
return null;
}
final Semaphore imageGot = new Semaphore(0);
while (true) {
// This loop will try to capture preview image continuously until a valid QR Code
// decoded. The caller can also call {@link #stop()} to interrupts scanning loop.
mCamera.setOneShotPreviewCallback(
(imageData, camera) -> {
mImage = getFrameImage(imageData);
imageGot.release();
});
try {
// Semaphore.acquire() blocking until permit is available, or the thread is
// interrupted.
imageGot.acquire();
Result qrCode = null;
try {
qrCode =
mReader.decodeWithState(
new BinaryBitmap(new HybridBinarizer(mImage)));
} catch (ReaderException e) {
// No logging since every time the reader cannot decode the
// image, this ReaderException will be thrown.
} finally {
mReader.reset();
}
if (qrCode != null) {
if (mScannerCallback.isValid(qrCode.getText())) {
return qrCode.getText();
}
}
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
return null;
}
}
}
@Override
protected void onPostExecute(String qrCode) {
if (qrCode != null) {
mScannerCallback.handleSuccessfulResult(qrCode);
}
}
private boolean initCamera(SurfaceTexture surface) {
final int numberOfCameras = Camera.getNumberOfCameras();
Camera.CameraInfo cameraInfo = new Camera.CameraInfo();
try {
for (int i = 0; i < numberOfCameras; ++i) {
Camera.getCameraInfo(i, cameraInfo);
if (cameraInfo.facing == CameraInfo.CAMERA_FACING_BACK) {
releaseCamera();
mCamera = Camera.open(i);
mCameraOrientation = cameraInfo.orientation;
break;
}
}
if (mCamera == null && numberOfCameras > 0) {
Log.i(TAG, "Can't find back camera. Opening a different camera");
Camera.getCameraInfo(0, cameraInfo);
releaseCamera();
mCamera = Camera.open(0);
mCameraOrientation = cameraInfo.orientation;
}
} catch (RuntimeException e) {
Log.e(TAG, "Fail to open camera: " + e);
mCamera = null;
mScannerCallback.handleCameraFailure();
return false;
}
try {
if (mCamera == null) {
throw new IOException("Cannot find available camera");
}
mCamera.setPreviewTexture(surface);
setCameraParameter();
setTransformationMatrix();
if (!startPreview()) {
throw new IOException("Lost contex");
}
} catch (IOException ioe) {
Log.e(TAG, "Fail to startPreview camera: " + ioe);
mCamera = null;
mScannerCallback.handleCameraFailure();
return false;
}
return true;
}
}
private void releaseCamera() {
if (mCamera != null) {
mCamera.release();
mCamera = null;
}
}
/** Set transform matrix to crop and center the preview picture */
private void setTransformationMatrix() {
final boolean isPortrait = mContext.get().getResources().getConfiguration().orientation
== Configuration.ORIENTATION_PORTRAIT;
final int previewWidth = isPortrait ? mPreviewSize.getWidth() : mPreviewSize.getHeight();
final int previewHeight = isPortrait ? mPreviewSize.getHeight() : mPreviewSize.getWidth();
final float ratioPreview = (float) getRatio(previewWidth, previewHeight);
// Calculate transformation matrix.
float scaleX = 1.0f;
float scaleY = 1.0f;
if (previewWidth > previewHeight) {
scaleY = scaleX / ratioPreview;
} else {
scaleX = scaleY / ratioPreview;
}
// Set the transform matrix.
final Matrix matrix = new Matrix();
matrix.setScale(scaleX, scaleY);
mScannerCallback.setTransform(matrix);
}
private QrYuvLuminanceSource getFrameImage(byte[] imageData) {
final Rect frame = mScannerCallback.getFramePosition(mPreviewSize, mCameraOrientation);
final QrYuvLuminanceSource image = new QrYuvLuminanceSource(imageData,
mPreviewSize.getWidth(), mPreviewSize.getHeight());
return (QrYuvLuminanceSource)
image.crop(frame.left, frame.top, frame.width(), frame.height());
}
@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case MSG_AUTO_FOCUS:
// Calling autoFocus(null) will only trigger the camera to focus once. In order
// to make the camera continuously auto focus during scanning, need to periodically
// trigger it.
mCamera.autoFocus(/* Camera.AutoFocusCallback */ null);
sendMessageDelayed(obtainMessage(MSG_AUTO_FOCUS), AUTOFOCUS_INTERVAL_MS);
break;
default:
Log.d(TAG, "Unexpected Message: " + msg.what);
}
}
/** Get best preview size from the list of camera supported preview sizes. Compares the
* preview size and aspect ratio to choose the best one. */
private Size getBestPreviewSize(Camera.Parameters parameters) {
final double minRatioDiffPercent = 0.1;
final Size windowSize = mScannerCallback.getViewSize();
final double winRatio = getRatio(windowSize.getWidth(), windowSize.getHeight());
double bestChoiceRatio = 0;
Size bestChoice = new Size(0, 0);
for (Camera.Size size : parameters.getSupportedPreviewSizes()) {
double ratio = getRatio(size.width, size.height);
if (size.height * size.width > bestChoice.getWidth() * bestChoice.getHeight()
&& (Math.abs(bestChoiceRatio - winRatio) / winRatio > minRatioDiffPercent
|| Math.abs(ratio - winRatio) / winRatio <= minRatioDiffPercent)) {
bestChoice = new Size(size.width, size.height);
bestChoiceRatio = getRatio(size.width, size.height);
}
}
return bestChoice;
}
/** Get best picture size from the list of camera supported picture sizes. Compares the
* picture size and aspect ratio to choose the best one. */
private Size getBestPictureSize(Camera.Parameters parameters) {
final Camera.Size previewSize = parameters.getPreviewSize();
final double previewRatio = getRatio(previewSize.width, previewSize.height);
List<Size> bestChoices = new ArrayList<>();
final List<Size> similarChoices = new ArrayList<>();
// Filter by ratio
for (Camera.Size size : parameters.getSupportedPictureSizes()) {
double ratio = getRatio(size.width, size.height);
if (ratio == previewRatio) {
bestChoices.add(new Size(size.width, size.height));
} else if (Math.abs(ratio - previewRatio) < MAX_RATIO_DIFF) {
similarChoices.add(new Size(size.width, size.height));
}
}
if (bestChoices.size() == 0 && similarChoices.size() == 0) {
Log.d(TAG, "No proper picture size, return default picture size");
Camera.Size defaultPictureSize = parameters.getPictureSize();
return new Size(defaultPictureSize.width, defaultPictureSize.height);
}
if (bestChoices.size() == 0) {
bestChoices = similarChoices;
}
// Get the best by area
int bestAreaDifference = Integer.MAX_VALUE;
Size bestChoice = null;
final int previewArea = previewSize.width * previewSize.height;
for (Size size : bestChoices) {
int areaDifference = Math.abs(size.getWidth() * size.getHeight() - previewArea);
if (areaDifference < bestAreaDifference) {
bestAreaDifference = areaDifference;
bestChoice = size;
}
}
return bestChoice;
}
private double getRatio(double x, double y) {
return (x < y) ? x / y : y / x;
}
@VisibleForTesting
protected void decodeImage(BinaryBitmap image) {
Result qrCode = null;
try {
qrCode = mReader.decodeWithState(image);
} catch (ReaderException e) {
} finally {
mReader.reset();
}
if (qrCode != null) {
mScannerCallback.handleSuccessfulResult(qrCode.getText());
}
}
/**
* After {@link #start(SurfaceTexture)}, DecodingTask runs continuously to capture images and
* decode QR code. DecodingTask become null After {@link #stop()}.
*
* Uses this method in test case to prevent power consumption problem.
*/
public boolean isDecodeTaskAlive() {
return mDecodeTask != null;
}
}

143
src/com/android/settings/wifi/qrcode/QrDecorateView.java
View File

@@ -1,143 +0,0 @@
/*
* Copyright (C) 2018 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.settings.wifi.qrcode;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.PorterDuff;
import android.graphics.PorterDuffXfermode;
import android.graphics.RectF;
import android.util.AttributeSet;
import android.util.TypedValue;
import android.view.View;
import com.android.settings.R;
/**
* Draws the lines at the corner of the inner frame.
*/
public class QrDecorateView extends View {
private static final float CORNER_STROKE_WIDTH = 4f; // 4dp
private static final float CORNER_LINE_LENGTH = 264f; // 264dp
private static final float CORNER_RADIUS = 16f; // 16dp
final private int mCornerColor;
final private int mFocusedCornerColor;
final private int mBackgroundColor;
final private Paint mStrokePaint;
final private Paint mTransparentPaint;
final private Paint mBackgroundPaint;
final private float mRadius;
final private float mInnerRidus;
private Bitmap mMaskBitmap;
private Canvas mMaskCanvas;
private RectF mOuterFrame;
private RectF mInnerFrame;
private boolean mFocused;
public QrDecorateView(Context context) {
this(context, null);
}
public QrDecorateView(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
public QrDecorateView(Context context, AttributeSet attrs, int defStyleAttr) {
this(context, attrs, defStyleAttr, 0);
}
public QrDecorateView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
super(context, attrs, defStyleAttr, defStyleRes);
mFocused = false;
mRadius = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, CORNER_RADIUS,
getResources().getDisplayMetrics());
// Inner radius needs to minus stroke width for keeping the width of border consistent.
mInnerRidus = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP,
CORNER_RADIUS - CORNER_STROKE_WIDTH, getResources().getDisplayMetrics());
mCornerColor = context.getResources().getColor(R.color.qr_corner_line_color);
mFocusedCornerColor = context.getResources().getColor(R.color.qr_focused_corner_line_color);
mBackgroundColor = context.getResources().getColor(R.color.qr_background_color);
mStrokePaint = new Paint();
mStrokePaint.setAntiAlias(true);
mTransparentPaint = new Paint();
mTransparentPaint.setAntiAlias(true);
mTransparentPaint.setColor(getResources().getColor(android.R.color.transparent));
mTransparentPaint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.CLEAR));
mBackgroundPaint = new Paint();
mBackgroundPaint.setColor(mBackgroundColor);
}
@Override
protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
super.onLayout(changed, left, top, right, bottom);
if(mMaskBitmap == null) {
mMaskBitmap = Bitmap.createBitmap(getWidth(), getHeight(), Bitmap.Config.ARGB_8888);
mMaskCanvas = new Canvas(mMaskBitmap);
}
calculateFramePos();
}
@Override
protected void onDraw(Canvas canvas) {
// Set frame line color.
mStrokePaint.setColor(mFocused ? mFocusedCornerColor : mCornerColor);
// Draw background color.
mMaskCanvas.drawColor(mBackgroundColor);
// Draw outer corner.
mMaskCanvas.drawRoundRect(mOuterFrame, mRadius, mRadius, mStrokePaint);
// Draw inner transparent corner.
mMaskCanvas.drawRoundRect(mInnerFrame, mInnerRidus, mInnerRidus, mTransparentPaint);
canvas.drawBitmap(mMaskBitmap, 0, 0, mBackgroundPaint);
super.onDraw(canvas);
}
private void calculateFramePos() {
final int centralX = getWidth() / 2;
final int centralY = getHeight() / 2;
final float cornerLineLength = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP,
CORNER_LINE_LENGTH, getResources().getDisplayMetrics()) / 2;
final float strokeWidth = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP,
CORNER_STROKE_WIDTH, getResources().getDisplayMetrics());
mOuterFrame = new RectF(centralX - cornerLineLength, centralY - cornerLineLength,
centralX + cornerLineLength, centralY + cornerLineLength);
mInnerFrame = new RectF(mOuterFrame.left + strokeWidth, mOuterFrame.top + strokeWidth,
mOuterFrame.right - strokeWidth, mOuterFrame.bottom - strokeWidth);
}
// Draws green lines if focused. Otherwise, draws white lines.
public void setFocused(boolean focused) {
mFocused = focused;
invalidate();
}
}

75
src/com/android/settings/wifi/qrcode/QrYuvLuminanceSource.java
View File

@@ -1,75 +0,0 @@
/*
* Copyright (C) 2018 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License
*/
package com.android.settings.wifi.qrcode;
import com.google.zxing.LuminanceSource;
/**
* This helper class implements crop method to crop preview picture.
*/
public class QrYuvLuminanceSource extends LuminanceSource {
private byte[] mYuvData;
private int mWidth;
private int mHeight;
public QrYuvLuminanceSource(byte[] yuvData, int width, int height) {
super(width, height);
mWidth = width;
mHeight = height;
mYuvData = yuvData;
}
@Override
public boolean isCropSupported() {
return true;
}
@Override
public LuminanceSource crop(int left, int top, int crop_width, int crop_height) {
final byte[] newImage = new byte[crop_width * crop_height];
int inputOffset = top * mWidth + left;
if (left + crop_width > mWidth || top + crop_height > mHeight) {
throw new IllegalArgumentException("cropped rectangle does not fit within image data.");
}
for (int y = 0; y < crop_height; y++) {
System.arraycopy(mYuvData, inputOffset, newImage, y * crop_width, crop_width);
inputOffset += mWidth;
}
return new QrYuvLuminanceSource(newImage, crop_width, crop_height);
}
@Override
public byte[] getRow(int y, byte[] row) {
if (y < 0 || y >= mHeight) {
throw new IllegalArgumentException("Requested row is outside the image: " + y);
}
if (row == null || row.length < mWidth) {
row = new byte[mWidth];
}
System.arraycopy(mYuvData, y * mWidth, row, 0, mWidth);
return row;
}
@Override
public byte[] getMatrix() {
return mYuvData;
}
}

178
tests/robotests/src/com/android/settings/wifi/qrcode/QrCameraTest.java
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/*
* Copyright (C) 2018 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.settings.wifi.qrcode;
import static com.google.common.truth.Truth.assertThat;
import static org.mockito.ArgumentMatchers.anyInt;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Matrix;
import android.graphics.Rect;
import android.graphics.SurfaceTexture;
import android.hardware.Camera;
import android.hardware.Camera.Parameters;
import android.hardware.Camera.Size;
import com.android.settingslib.qrcode.QrCodeGenerator;
import com.google.zxing.BinaryBitmap;
import com.google.zxing.LuminanceSource;
import com.google.zxing.RGBLuminanceSource;
import com.google.zxing.WriterException;
import com.google.zxing.common.HybridBinarizer;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.Mock;
import org.robolectric.RobolectricTestRunner;
import org.robolectric.RuntimeEnvironment;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
@RunWith(RobolectricTestRunner.class)
public class QrCameraTest {
@Mock
private SurfaceTexture mSurfaceTexture;
private QrCamera mCamera;
private Context mContext;
private String mQrCode;
CountDownLatch mCallbackSignal;
private boolean mCameraCallbacked;
private class ScannerTestCallback implements QrCamera.ScannerCallback {
@Override
public android.util.Size getViewSize() {
return new android.util.Size(0, 0);
}
@Override
public Rect getFramePosition(android.util.Size previewSize, int cameraOrientation) {
return new Rect(0,0,0,0);
}
@Override
public void handleSuccessfulResult(String qrCode) {
mQrCode = qrCode;
}
@Override
public void handleCameraFailure() {
mCameraCallbacked = true;
mCallbackSignal.countDown();
}
@Override
public void setTransform(Matrix transform) {
// Do nothing
}
@Override
public boolean isValid(String qrCode) {
return true;
}
}
private ScannerTestCallback mScannerCallback;
@Before
public void setUp() {
mContext = RuntimeEnvironment.application;
mScannerCallback = new ScannerTestCallback();
mCamera = new QrCamera(mContext, mScannerCallback);
mSurfaceTexture = mock(SurfaceTexture.class);
mQrCode = "";
mCameraCallbacked = false;
mCallbackSignal = null;
}
@Test
public void testCamera_Init_Callback() throws InterruptedException {
mCallbackSignal = new CountDownLatch(1);
mCamera.start(mSurfaceTexture);
mCallbackSignal.await(5000, TimeUnit.MILLISECONDS);
assertThat(mCameraCallbacked).isTrue();
}
@Test
public void testDecode_PictureCaptured_QrCodeCorrectValue() {
final String googleUrl = "http://www.google.com";
try {
final Bitmap bmp = QrCodeGenerator.encodeQrCode(googleUrl, 320);
final int[] intArray = new int[bmp.getWidth() * bmp.getHeight()];
bmp.getPixels(intArray, 0, bmp.getWidth(), 0, 0, bmp.getWidth(), bmp.getHeight());
LuminanceSource source = new RGBLuminanceSource(bmp.getWidth(), bmp.getHeight(),
intArray);
final BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
mCamera.decodeImage(bitmap);
bmp.recycle();
} catch (WriterException e) {
}
assertThat(mQrCode).isEqualTo(googleUrl);
}
@Test
public void testDecode_unicodePictureCaptured_QrCodeCorrectValue() {
final String unicodeTest = "中文測試";
try {
final Bitmap bmp = QrCodeGenerator.encodeQrCode(unicodeTest, 320);
final int[] intArray = new int[bmp.getWidth() * bmp.getHeight()];
bmp.getPixels(intArray, 0, bmp.getWidth(), 0, 0, bmp.getWidth(), bmp.getHeight());
LuminanceSource source = new RGBLuminanceSource(bmp.getWidth(), bmp.getHeight(),
intArray);
final BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
mCamera.decodeImage(bitmap);
bmp.recycle();
} catch (WriterException e) {
}
assertThat(mQrCode).isEqualTo(unicodeTest);
}
@Test
public void setCameraParameter_shouldSetParameters() {
mCamera.mCamera = mock(Camera.class);
Parameters parameters = mock(Camera.Parameters.class);
Size size = mCamera.mCamera.new Size(1920, 1440);
List<Camera.Size> sizes = new ArrayList<>(Arrays.asList(size));
when(parameters.getPreviewSize()).thenReturn(size);
when(parameters.getSupportedPreviewSizes()).thenReturn(sizes);
when(parameters.getSupportedPictureSizes()).thenReturn(sizes);
when(mCamera.mCamera.getParameters()).thenReturn(parameters);
mCamera.setCameraParameter();
verify(mCamera.mParameters).setPreviewSize(anyInt(), anyInt());
verify(mCamera.mParameters).setPictureSize(anyInt(), anyInt());
verify(mCamera.mCamera).setParameters(mCamera.mParameters);
}
}