// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
package org.chromium.shape_detection;
import android.graphics.Point;
import android.graphics.Rect;
import android.util.SparseArray;
import com.google.android.gms.vision.Frame;
import com.google.android.gms.vision.barcode.Barcode;
import com.google.android.gms.vision.barcode.BarcodeDetector;
import org.chromium.base.ContextUtils;
import org.chromium.base.Log;
import org.chromium.gfx.mojom.PointF;
import org.chromium.gfx.mojom.RectF;
import org.chromium.mojo.system.MojoException;
import org.chromium.shape_detection.mojom.BarcodeDetection;
import org.chromium.shape_detection.mojom.BarcodeDetectionResult;
import org.chromium.shape_detection.mojom.BarcodeDetectorOptions;
import org.chromium.shape_detection.mojom.BarcodeFormat;
/** Implementation of mojo BarcodeDetection, using Google Play Services vision package. */
public class BarcodeDetectionImpl implements BarcodeDetection {
private static final String TAG = "BarcodeDetectionImpl";
private BarcodeDetector mBarcodeDetector;
public BarcodeDetectionImpl(BarcodeDetectorOptions options) {
int formats = Barcode.ALL_FORMATS;
if (options.formats != null && options.formats.length > 0) {
formats = 0;
// Keep this list in sync with the constants defined in
// com.google.android.gms.vision.barcode.Barcode and the list of
// supported formats in BarcodeDetectionProviderImpl.
for (int i = 0; i < options.formats.length; ++i) {
if (options.formats[i] == BarcodeFormat.AZTEC) {
formats |= Barcode.AZTEC;
} else if (options.formats[i] == BarcodeFormat.CODE_128) {
formats |= Barcode.CODE_128;
} else if (options.formats[i] == BarcodeFormat.CODE_39) {
formats |= Barcode.CODE_39;
} else if (options.formats[i] == BarcodeFormat.CODE_93) {
formats |= Barcode.CODE_93;
} else if (options.formats[i] == BarcodeFormat.CODABAR) {
formats |= Barcode.CODABAR;
} else if (options.formats[i] == BarcodeFormat.DATA_MATRIX) {
formats |= Barcode.DATA_MATRIX;
} else if (options.formats[i] == BarcodeFormat.EAN_13) {
formats |= Barcode.EAN_13;
} else if (options.formats[i] == BarcodeFormat.EAN_8) {
formats |= Barcode.EAN_8;
} else if (options.formats[i] == BarcodeFormat.ITF) {
formats |= Barcode.ITF;
} else if (options.formats[i] == BarcodeFormat.PDF417) {
formats |= Barcode.PDF417;
} else if (options.formats[i] == BarcodeFormat.QR_CODE) {
formats |= Barcode.QR_CODE;
} else if (options.formats[i] == BarcodeFormat.UPC_A) {
formats |= Barcode.UPC_A;
} else if (options.formats[i] == BarcodeFormat.UPC_E) {
formats |= Barcode.UPC_E;
} else {
Log.e(TAG, "Unsupported barcode format hint: " + options.formats[i]);
}
}
}
mBarcodeDetector =
new BarcodeDetector.Builder(ContextUtils.getApplicationContext())
.setBarcodeFormats(formats)
.build();
}
@Override
public void detect(org.chromium.skia.mojom.BitmapN32 bitmapData, Detect_Response callback) {
// The vision library will be downloaded the first time the API is used
// on the device; this happens "fast", but it might have not completed,
// bail in this case. Also, the API was disabled between and v.9.0 and
// v.9.2, see https://developers.google.com/android/guides/releases.
if (!mBarcodeDetector.isOperational()) {
Log.e(TAG, "BarcodeDetector is not operational");
callback.call(new BarcodeDetectionResult[0]);
return;
}
Frame frame = BitmapUtils.convertToFrame(bitmapData);
if (frame == null) {
Log.e(TAG, "Error converting Mojom Bitmap to Frame");
callback.call(new BarcodeDetectionResult[0]);
return;
}
final SparseArray<Barcode> barcodes = mBarcodeDetector.detect(frame);
BarcodeDetectionResult[] barcodeArray = new BarcodeDetectionResult[barcodes.size()];
for (int i = 0; i < barcodes.size(); i++) {
barcodeArray[i] = new BarcodeDetectionResult();
final Barcode barcode = barcodes.valueAt(i);
barcodeArray[i].rawValue = barcode.rawValue;
final Rect rect = barcode.getBoundingBox();
barcodeArray[i].boundingBox = new RectF();
barcodeArray[i].boundingBox.x = rect.left;
barcodeArray[i].boundingBox.y = rect.top;
barcodeArray[i].boundingBox.width = rect.width();
barcodeArray[i].boundingBox.height = rect.height();
final Point[] corners = barcode.cornerPoints;
barcodeArray[i].cornerPoints = new PointF[corners.length];
for (int j = 0; j < corners.length; j++) {
barcodeArray[i].cornerPoints[j] = new PointF();
barcodeArray[i].cornerPoints[j].x = corners[j].x;
barcodeArray[i].cornerPoints[j].y = corners[j].y;
}
barcodeArray[i].format = toBarcodeFormat(barcode.format);
}
callback.call(barcodeArray);
}
@Override
public void close() {
mBarcodeDetector.release();
}
@Override
public void onConnectionError(MojoException e) {
close();
}
private int toBarcodeFormat(int format) {
switch (format) {
case Barcode.CODE_128:
return BarcodeFormat.CODE_128;
case Barcode.CODE_39:
return BarcodeFormat.CODE_39;
case Barcode.CODE_93:
return BarcodeFormat.CODE_93;
case Barcode.CODABAR:
return BarcodeFormat.CODABAR;
case Barcode.DATA_MATRIX:
return BarcodeFormat.DATA_MATRIX;
case Barcode.EAN_13:
return BarcodeFormat.EAN_13;
case Barcode.EAN_8:
return BarcodeFormat.EAN_8;
case Barcode.ITF:
return BarcodeFormat.ITF;
case Barcode.QR_CODE:
return BarcodeFormat.QR_CODE;
case Barcode.UPC_A:
return BarcodeFormat.UPC_A;
case Barcode.UPC_E:
return BarcodeFormat.UPC_E;
case Barcode.PDF417:
return BarcodeFormat.PDF417;
case Barcode.AZTEC:
return BarcodeFormat.AZTEC;
}
return BarcodeFormat.UNKNOWN;
}
}
Codebase Browser
chromium