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Update ScanViewNew.java #72

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6c24173
Update ScanViewNew.java
Unit032010 Sep 16, 2024
08bb385
Update this.getCameraInstance().close()
Unit032010 Sep 16, 2024
1921396
Update ScanViewNew.java
Unit032010 Oct 22, 2024
7ce74b3
Update ScanViewNew.java
Unit032010 Oct 23, 2024
60bbb91
Update QRCodeDecoder.java
Unit032010 Oct 23, 2024
55b514b
Update ScanViewNew.java
Unit032010 Oct 24, 2024
9accdc5
[+] Update zoom
Nov 4, 2024
d88410d
[+] Revert zoom camera
Nov 4, 2024
2d5f203
Update ScanPlatformView.java
Unit032010 Apr 24, 2025
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156 changes: 64 additions & 92 deletions android/src/main/java/com/chavesgu/scan/QRCodeDecoder.java
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Original file line number Diff line number Diff line change
Expand Up @@ -31,7 +31,7 @@

public class QRCodeDecoder {
private static byte[] yuvs;
public static int MAX_PICTURE_PIXEL = 256;
public static int MAX_PICTURE_PIXEL = 1024; // Tăng kích thước ảnh lên 1024 pixel để giữ chi tiết mã QR
public static final List<BarcodeFormat> allFormats = new ArrayList<BarcodeFormat>() {{
add(BarcodeFormat.AZTEC);
add(BarcodeFormat.CODABAR);
Expand All @@ -51,84 +51,94 @@ public class QRCodeDecoder {
add(BarcodeFormat.UPC_E);
add(BarcodeFormat.UPC_EAN_EXTENSION);
}};
public static final Map<DecodeHintType, Object> HINTS = new EnumMap<DecodeHintType, Object>(DecodeHintType.class) {{

public static final Map<DecodeHintType, Object> HINTS = new EnumMap(DecodeHintType.class) {{
put(DecodeHintType.TRY_HARDER, Boolean.TRUE);
put(DecodeHintType.POSSIBLE_FORMATS, allFormats);
put(DecodeHintType.CHARACTER_SET, "utf-8");
}};

public static void config() {
// Place for any global configurations (if necessary)
}

// Decode QR code from image path
public static String syncDecodeQRCode(String path) {
config();
Bitmap bitmap = pathToBitMap(path, MAX_PICTURE_PIXEL, MAX_PICTURE_PIXEL);
int width = bitmap.getWidth();
int height = bitmap.getHeight();
byte[] mData = getYUV420sp(bitmap.getWidth(), bitmap.getHeight(), bitmap);

Result result = decodeImage(mData, width, height);
if (result!=null) return result.getText();
return null;
return decodeQRCodeFromBitmap(bitmap);
}

// Decode QR code from a Bitmap object
public static String syncDecodeQRCode(Bitmap bitmap) {
config();
return decodeQRCodeFromBitmap(bitmap);
}

// Decode image using ZXing and fallback to HybridBinarizer if necessary
private static String decodeQRCodeFromBitmap(Bitmap bitmap) {
if (bitmap == null) return null;

int width = bitmap.getWidth();
int height = bitmap.getHeight();
byte[] mData = getYUV420sp(bitmap.getWidth(), bitmap.getHeight(), bitmap);
byte[] mData = getYUV420sp(width, height, bitmap);

// Ensure bitmap is recycled to free memory
bitmap.recycle();

Result result = decodeImage(mData, width, height);
if (result!=null) return result.getText();
if (result != null) return result.getText();
return null;
}

// Decode byte array image using ZXing
private static Result decodeImage(byte[] data, int width, int height) {
// 处理
Result result = null;
try {
PlanarYUVLuminanceSource source =
new PlanarYUVLuminanceSource(data, width, height, 0, 0, width, height, false);
BinaryBitmap bitmap1 = new BinaryBitmap(new GlobalHistogramBinarizer(source));
QRCodeReader reader2 = new QRCodeReader();
result = reader2.decode(bitmap1, HINTS);
BinaryBitmap binaryBitmap = new BinaryBitmap(new GlobalHistogramBinarizer(source));
QRCodeReader reader = new QRCodeReader();
result = reader.decode(binaryBitmap, HINTS);
} catch (FormatException | ChecksumException ignored) {
// You can log these exceptions if needed
} catch (NotFoundException e) {
// Fallback to HybridBinarizer for more robust scanning
PlanarYUVLuminanceSource source =
new PlanarYUVLuminanceSource(data, width, height, 0, 0, width, height, false);
BinaryBitmap bitmap1 = new BinaryBitmap(new HybridBinarizer(source));
QRCodeReader reader2 = new QRCodeReader();
BinaryBitmap binaryBitmap = new BinaryBitmap(new HybridBinarizer(source));
QRCodeReader reader = new QRCodeReader();
try {
result = reader2.decode(bitmap1, HINTS);
result = reader.decode(binaryBitmap, HINTS);
} catch (NotFoundException | ChecksumException | FormatException ignored) {
// Log these exceptions if needed
}
}
return result;
}

// Convert image path to Bitmap
private static Bitmap pathToBitMap(String imgPath, int reqWidth, int reqHeight) {
final BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
BitmapFactory.decodeFile(imgPath, options);

// Calculate inSampleSize
options.inSampleSize = calculateInSampleSize(options, reqWidth, reqHeight);

// Decode bitmap with inSampleSize set
options.inJustDecodeBounds = false;
return BitmapFactory.decodeFile(imgPath, options);
}

// Calculate optimal sample size
private static int calculateInSampleSize(BitmapFactory.Options options, int reqWidth, int reqHeight) {
// Raw height and width of image
final int height = options.outHeight;
final int width = options.outWidth;
int inSampleSize = 1;

if (height > reqHeight || width > reqWidth) {

final int halfHeight = height / 2;
final int halfWidth = width / 2;

// Calculate the largest inSampleSize value that is a power of 2 and keeps both
// height and width larger than the requested height and width.
while ((halfHeight / inSampleSize) > reqHeight && (halfWidth / inSampleSize) > reqWidth) {
inSampleSize *= 2;
}
Expand All @@ -137,111 +147,73 @@ private static int calculateInSampleSize(BitmapFactory.Options options, int reqW
return inSampleSize;
}

private static byte[] getYUV420sp(int inputWidth, int inputHeight, Bitmap scaled) {
int[] argb = new int[inputWidth * inputHeight];
// Convert Bitmap to YUV420sp byte array
private static byte[] getYUV420sp(int width, int height, Bitmap scaled) {
int[] argb = new int[width * height];
scaled.getPixels(argb, 0, width, 0, 0, width, height);

scaled.getPixels(argb, 0, inputWidth, 0, 0, inputWidth, inputHeight);

int requiredWidth = inputWidth % 2 == 0 ? inputWidth : inputWidth + 1;
int requiredHeight = inputHeight % 2 == 0 ? inputHeight : inputHeight + 1;

int byteLength = requiredWidth * requiredHeight * 3 / 2;
int byteLength = width * height * 3 / 2;
if (yuvs == null || yuvs.length < byteLength) {
yuvs = new byte[byteLength];
} else {
Arrays.fill(yuvs, (byte) 0);
}

encodeYUV420SP(yuvs, argb, inputWidth, inputHeight);

scaled.recycle();

encodeYUV420SP(yuvs, argb, width, height);
return yuvs;
}

// Convert ARGB to YUV420SP format
private static void encodeYUV420SP(byte[] yuv420sp, int[] argb, int width, int height) {
// 帧图片的像素大小
final int frameSize = width * height;
// ---YUV数据---
int Y, U, V;
// Y的index从0开始
int yIndex = 0;
// UV的index从frameSize开始
int uvIndex = frameSize;
int R, G, B, Y, U, V;

// ---颜色数据---
// int a, R, G, B;
int R, G, B;
//
int argbIndex = 0;
//

// ---循环所有像素点，RGB转YUV---
for (int j = 0; j < height; j++) {
for (int i = 0; i < width; i++) {
R = (argb[yIndex] & 0xff0000) >> 16;
G = (argb[yIndex] & 0xff00) >> 8;
B = argb[yIndex] & 0xff;

// a is not used obviously
// a = (argb[argbIndex] & 0xff000000) >> 24;
R = (argb[argbIndex] & 0xff0000) >> 16;
G = (argb[argbIndex] & 0xff00) >> 8;
B = (argb[argbIndex] & 0xff);
//
argbIndex++;

// well known RGB to YUV algorithm
Y = ((66 * R + 129 * G + 25 * B + 128) >> 8) + 16;
U = ((-38 * R - 74 * G + 112 * B + 128) >> 8) + 128;
V = ((112 * R - 94 * G - 18 * B + 128) >> 8) + 128;

//
Y = Math.max(0, Math.min(Y, 255));
U = Math.max(0, Math.min(U, 255));
V = Math.max(0, Math.min(V, 255));

// NV21 has a plane of Y and interleaved planes of VU each sampled by a factor of 2
// meaning for every 4 Y pixels there are 1 V and 1 U. Note the sampling is every other
// pixel AND every other scanline.
// ---Y---
yuv420sp[yIndex++] = (byte) Y;
// ---UV---
yuv420sp[yIndex++] = (byte) Math.max(0, Math.min(Y, 255));
if ((j % 2 == 0) && (i % 2 == 0)) {
//
yuv420sp[uvIndex++] = (byte) V;
//
yuv420sp[uvIndex++] = (byte) U;
yuv420sp[uvIndex++] = (byte) Math.max(0, Math.min(V, 255));
yuv420sp[uvIndex++] = (byte) Math.max(0, Math.min(U, 255));
}
}
}
}


// Decode QR code using Huawei ScanKit or fallback to ZXing
public static String decodeQRCode(Context context, String path) {
BitmapFactory.Options sizeOptions = new BitmapFactory.Options();
sizeOptions.inJustDecodeBounds = true;
BitmapFactory.decodeFile(path, sizeOptions);
BitmapFactory.Options decodeOptions = new BitmapFactory.Options();
if (sizeOptions.outWidth * sizeOptions.outHeight * 3 > 10 * 1024 * 1024) {
Log.i("scan", String.format("bitmap too large %d x %d",sizeOptions.outWidth, sizeOptions.outHeight));
decodeOptions.inSampleSize = 2;
}
Bitmap bitmap = BitmapFactory.decodeFile(path, decodeOptions);

HmsScanAnalyzerOptions options = new HmsScanAnalyzerOptions.Creator().setPhotoMode(true).create();
HmsScan[] hmsScans = ScanUtil.decodeWithBitmap(context, bitmap, options);

if (hmsScans != null && hmsScans.length > 0) {
return hmsScans[0].getOriginalValue();
}
return syncDecodeQRCode(path);
Bitmap bitmap = pathToBitMap(path, MAX_PICTURE_PIXEL, MAX_PICTURE_PIXEL);
return decodeQRCodeFromBitmap(context, bitmap, path);
}

// Decode QR code from bitmap using Huawei ScanKit first, fallback to ZXing
public static String decodeQRCode(Context context, Bitmap bitmap) {
return decodeQRCodeFromBitmap(context, bitmap, null);
}

// Unified method for handling ScanKit and ZXing
private static String decodeQRCodeFromBitmap(Context context, Bitmap bitmap, String fallbackPath) {
if (bitmap == null) return null;

// Try Huawei ScanKit first
HmsScanAnalyzerOptions options = new HmsScanAnalyzerOptions.Creator().setPhotoMode(true).create();
HmsScan[] hmsScans = ScanUtil.decodeWithBitmap(context, bitmap, options);

if (hmsScans != null && hmsScans.length > 0) {
return hmsScans[0].getOriginalValue();
}
return syncDecodeQRCode(bitmap);

// Fallback to ZXing if ScanKit fails
return fallbackPath != null ? syncDecodeQRCode(fallbackPath) : syncDecodeQRCode(bitmap);
}
}

24 changes: 18 additions & 6 deletions android/src/main/java/com/chavesgu/scan/ScanPlatformView.java
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Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -18,14 +18,15 @@
import io.flutter.plugin.common.MethodChannel;
import io.flutter.plugin.common.PluginRegistry;
import io.flutter.plugin.platform.PlatformView;
import android.os.Build;

public class ScanPlatformView implements PlatformView, MethodChannel.MethodCallHandler, ScanViewNew.CaptureListener {
private MethodChannel channel;
private Context context;
private Activity activity;
private ActivityPluginBinding activityPluginBinding;
private ParentView parentView;
// private ScanView scanView;
// private ScanView scanView;
private ScanViewNew scanViewNew;
private ScanDrawView scanDrawView;
private boolean flashlight;
Expand All @@ -42,12 +43,17 @@ public class ScanPlatformView implements PlatformView, MethodChannel.MethodCallH
private void initForBinding(Map<String, Object> args) {
this.scanViewNew = new ScanViewNew(context, activity, activityPluginBinding, args);
this.scanViewNew.setCaptureListener(this);

this.scanDrawView = new ScanDrawView(context, activity, args);
if (Build.VERSION.SDK_INT >= 30) {
this.scanDrawView = new ScanDrawView(context, activity, args);
}
//this.scanDrawView = new ScanDrawView(context, activity, args);

this.parentView = new ParentView(context);
this.parentView.addView(this.scanViewNew);
this.parentView.addView(this.scanDrawView);
if (Build.VERSION.SDK_INT >= 30) {
this.parentView.addView(this.scanDrawView);
}
//this.parentView.addView(this.scanDrawView);
}

@Override
Expand All @@ -73,11 +79,17 @@ public void onMethodCall(@NonNull MethodCall call, @NonNull MethodChannel.Result

private void resume() {
this.scanViewNew.resume();
this.scanDrawView.resume();
//this.scanDrawView.resume();
if (Build.VERSION.SDK_INT >= 30) {
this.scanDrawView.resume();
}
}
private void pause() {
this.scanViewNew.pause();
this.scanDrawView.pause();
//this.scanDrawView.pause();
if (Build.VERSION.SDK_INT >= 30) {
this.scanDrawView.pause();
}
}
private void toggleTorchMode() {
this.scanViewNew.toggleTorchMode(!flashlight);
Expand Down
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