package nodomain.freeyourgadget.gadgetbridge.womp;
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import android.Manifest;
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import android.annotation.SuppressLint;
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import android.content.Intent;
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import android.content.pm.PackageManager;
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import android.os.Bundle;
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import android.util.Size;
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import android.widget.TextView;
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import android.widget.Toast;
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import androidx.annotation.NonNull;
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import androidx.annotation.Nullable;
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import androidx.appcompat.app.AppCompatActivity;
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import androidx.camera.core.CameraSelector;
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import androidx.camera.core.ImageAnalysis;
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import androidx.camera.core.ImageProxy;
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import androidx.camera.core.Preview;
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import androidx.camera.lifecycle.ProcessCameraProvider;
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import androidx.camera.view.PreviewView;
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import androidx.core.app.ActivityCompat;
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import androidx.core.content.ContextCompat;
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import com.google.common.util.concurrent.ListenableFuture;
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import com.google.zxing.BinaryBitmap;
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import com.google.zxing.MultiFormatReader;
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import com.google.zxing.NotFoundException;
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import com.google.zxing.PlanarYUVLuminanceSource;
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import com.google.zxing.Result;
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import com.google.zxing.common.HybridBinarizer;
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import java.nio.ByteBuffer;
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import java.util.concurrent.ExecutorService;
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import java.util.concurrent.Executors;
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import nodomain.freeyourgadget.gadgetbridge.R;
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public class WompScanActivity extends AppCompatActivity {
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public static final String EXTRA_CODE = "code";
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private PreviewView previewView;
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private ExecutorService cameraExecutor;
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private volatile boolean found;
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private final MultiFormatReader reader = new MultiFormatReader();
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@Override
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protected void onCreate(@Nullable Bundle savedInstanceState) {
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setTheme(R.style.GadgetbridgeTheme_NoActionBar);
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super.onCreate(savedInstanceState);
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setContentView(R.layout.activity_womp_scan);
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previewView = findViewById(R.id.womp_preview);
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TextView hint = findViewById(R.id.womp_scan_hint);
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hint.setText("对准二维码扫描");
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cameraExecutor = Executors.newSingleThreadExecutor();
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findViewById(R.id.womp_scan_cancel).setOnClickListener(v -> {
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setResult(RESULT_CANCELED);
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finish();
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});
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if (ContextCompat.checkSelfPermission(this, Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) {
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ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.CAMERA}, 1);
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} else {
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startCamera();
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}
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}
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@Override
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public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
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super.onRequestPermissionsResult(requestCode, permissions, grantResults);
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if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
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startCamera();
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} else {
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Toast.makeText(this, "需要摄像头权限", Toast.LENGTH_SHORT).show();
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finish();
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}
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}
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private void startCamera() {
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ListenableFuture<ProcessCameraProvider> future = ProcessCameraProvider.getInstance(this);
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future.addListener(() -> {
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try {
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ProcessCameraProvider provider = future.get();
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Preview preview = new Preview.Builder().build();
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preview.setSurfaceProvider(previewView.getSurfaceProvider());
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ImageAnalysis analysis = new ImageAnalysis.Builder()
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.setTargetResolution(new Size(1280, 720))
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.setBackpressureStrategy(ImageAnalysis.STRATEGY_KEEP_ONLY_LATEST)
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.build();
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analysis.setAnalyzer(cameraExecutor, this::analyze);
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provider.unbindAll();
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provider.bindToLifecycle(this, CameraSelector.DEFAULT_BACK_CAMERA, preview, analysis);
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} catch (Exception e) {
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Toast.makeText(this, "无法打开摄像头", Toast.LENGTH_SHORT).show();
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finish();
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}
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}, ContextCompat.getMainExecutor(this));
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}
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@SuppressLint("UnsafeOptInUsageError")
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private void analyze(ImageProxy image) {
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if (found) {
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image.close();
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return;
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}
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try {
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ImageProxy.PlaneProxy plane = image.getPlanes()[0];
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ByteBuffer buffer = plane.getBuffer();
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int width = image.getWidth();
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int height = image.getHeight();
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int rowStride = plane.getRowStride();
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byte[] data = new byte[width * height];
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if (rowStride == width) {
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buffer.get(data, 0, Math.min(data.length, buffer.remaining()));
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} else {
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byte[] row = new byte[rowStride];
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int pos = 0;
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for (int i = 0; i < height; i++) {
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int toRead = Math.min(rowStride, buffer.remaining());
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if (toRead <= 0) break;
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buffer.get(row, 0, toRead);
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System.arraycopy(row, 0, data, pos, width);
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pos += width;
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}
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}
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PlanarYUVLuminanceSource source = new PlanarYUVLuminanceSource(
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data, width, height, 0, 0, width, height, false);
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BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
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Result result = reader.decodeWithState(bitmap);
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if (result != null && result.getText() != null) {
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found = true;
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Intent dataIntent = new Intent();
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dataIntent.putExtra(EXTRA_CODE, result.getText().trim());
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setResult(RESULT_OK, dataIntent);
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finish();
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}
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} catch (NotFoundException ignored) {
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} catch (Exception ignored) {
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} finally {
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reader.reset();
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image.close();
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}
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}
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@Override
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protected void onDestroy() {
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super.onDestroy();
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if (cameraExecutor != null) {
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cameraExecutor.shutdown();
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}
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}
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}
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