Examples with Frame com.google.android.gms.vision.Frame used on opensource projects

Example 1 with Frame

use of com.google.android.gms.vision.Frame in project PairingExample by AinaWireless.

the class MainActivity method onActivityResult.

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (requestCode == PHOTO_REQUEST && resultCode == RESULT_OK) {
        mButton_scan.setEnabled(false);
        launchMediaScanIntent();
        try {
            Bitmap bitmap = decodeBitmapUri(this, imageUri);
            if (detector.isOperational() && bitmap != null) {
                Frame frame = new Frame.Builder().setBitmap(bitmap).build();
                SparseArray<Barcode> QRcodes = detector.detect(frame);
                for (int index = 0; index < QRcodes.size(); index++) {
                    int tmp;
                    mac_cnt = 0;
                    scanHeader.setTypeface(null, Typeface.BOLD);
                    scanHeader.setText("QR-Code content:");
                    Barcode code = QRcodes.valueAt(index);
                    scanResults.setText(code.displayValue);
                    tmp = code.displayValue.indexOf("/");
                    String MAC = code.displayValue.substring(0, tmp);
                    MACs[mac_cnt] = MAC.substring(0, 2) + ":";
                    MACs[mac_cnt] += MAC.substring(2, 4) + ":";
                    MACs[mac_cnt] += MAC.substring(4, 6) + ":";
                    MACs[mac_cnt] += MAC.substring(6, 8) + ":";
                    MACs[mac_cnt] += MAC.substring(8, 10) + ":";
                    MACs[mac_cnt] += MAC.substring(10, 12);
                    mac_cnt++;
                    tmp = code.displayValue.indexOf("/") + 1;
                    MAC = code.displayValue.substring(tmp, code.displayValue.length());
                    MACs[mac_cnt] = MAC.substring(0, 2) + ":";
                    MACs[mac_cnt] += MAC.substring(2, 4) + ":";
                    MACs[mac_cnt] += MAC.substring(4, 6) + ":";
                    MACs[mac_cnt] += MAC.substring(6, 8) + ":";
                    MACs[mac_cnt] += MAC.substring(8, 10) + ":";
                    MACs[mac_cnt] += MAC.substring(10, 12);
                    if (!MACs[1].equals(""))
                        mText_classicMac.setText("BTC MAC address = " + MACs[1]);
                    if (!MACs[0].equals(""))
                        mText_bleMac.setText("BLE MAC address = " + MACs[0]);
                    tryBTC = true;
                    TextUpdateHandler.post(updateRunnable);
                    Runnable r = new ConnectThread(MACs[1]);
                    new Thread(r).start();
                }
                if (QRcodes.size() == 0) {
                    mButton_scan.setEnabled(true);
                    scanHeader.setText("Scan Failed: Did not found valid QR-Code");
                }
            } else {
                mButton_scan.setEnabled(true);
                scanHeader.setText("Could not set up the QR-scanner!");
            }
        } catch (Exception e) {
            Toast.makeText(this, "Failed to load QR-code file", Toast.LENGTH_SHORT).show();
        }
        File photo = new File(Environment.getExternalStorageDirectory(), "picture.jpg");
        if (!photo.delete()) {
            Toast.makeText(this, "Failed to delete qr-code picture file", Toast.LENGTH_SHORT).show();
        }
    }
}

Example 2 with Frame

use of com.google.android.gms.vision.Frame in project MiscellaneousStudy by mikoto2000.

the class MainActivity method onCreate.

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    mCameraView = new SurfaceView(getApplicationContext());
    // 何もしない Detector を作成
    Detector<Void> detector = new Detector<Void>() {

        @Override
        public SparseArray<Void> detect(Frame frame) {
            return null;
        }
    };
    // 何もしない Processor を作って detector にセット
    detector.setProcessor(new Detector.Processor<Void>() {

        @Override
        public void release() {
        }

        @Override
        public void receiveDetections(Detector.Detections<Void> detections) {
        }
    });
    // カメラソース作成
    mCameraSource = new CameraSource.Builder(this, detector).setRequestedPreviewSize(640, 480).setRequestedFps(20.0f).setAutoFocusEnabled(true).setFacing(CameraSource.CAMERA_FACING_BACK).build();
    // SurfaceView に SurfaceHolderCallback を設定。
    mCameraView.getHolder().addCallback(new SurfaceHolder.Callback() {

        @Override
        public void surfaceCreated(SurfaceHolder holder) {
            try {
                if (ActivityCompat.checkSelfPermission(getApplicationContext(), Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) {
                    return;
                }
                mCameraSource.start(mCameraView.getHolder());
            } catch (IOException ie) {
                Log.e("CAMERA SOURCE", ie.getMessage());
            }
        }

        @Override
        public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
        }

        @Override
        public void surfaceDestroyed(SurfaceHolder holder) {
            mCameraSource.stop();
        }
    });
    setContentView(mCameraView);
}

Example 3 with Frame

use of com.google.android.gms.vision.Frame in project android-vision by googlesamples.

the class SafeFaceDetector method padFrameRight.

/**
 * Creates a new frame based on the original frame, with additional width on the right to
 * increase the size to avoid the bug in the underlying face detector.
 */
private Frame padFrameRight(Frame originalFrame, int newWidth) {
    Frame.Metadata metadata = originalFrame.getMetadata();
    int width = metadata.getWidth();
    int height = metadata.getHeight();
    Log.i(TAG, "Padded image from: " + width + "x" + height + " to " + newWidth + "x" + height);
    ByteBuffer origBuffer = originalFrame.getGrayscaleImageData();
    int origOffset = origBuffer.arrayOffset();
    byte[] origBytes = origBuffer.array();
    // This can be changed to just .allocate in the future, when Frame supports non-direct
    // byte buffers.
    ByteBuffer paddedBuffer = ByteBuffer.allocateDirect(newWidth * height);
    int paddedOffset = paddedBuffer.arrayOffset();
    byte[] paddedBytes = paddedBuffer.array();
    Arrays.fill(paddedBytes, (byte) 0);
    for (int y = 0; y < height; ++y) {
        int origStride = origOffset + y * width;
        int paddedStride = paddedOffset + y * newWidth;
        System.arraycopy(origBytes, origStride, paddedBytes, paddedStride, width);
    }
    return new Frame.Builder().setImageData(paddedBuffer, newWidth, height, ImageFormat.NV21).setId(metadata.getId()).setRotation(metadata.getRotation()).setTimestampMillis(metadata.getTimestampMillis()).build();
}

Example 4 with Frame

use of com.google.android.gms.vision.Frame in project android-vision by googlesamples.

the class SafeFaceDetector method padFrameBottom.

/**
 * Creates a new frame based on the original frame, with additional height on the bottom to
 * increase the size to avoid the bug in the underlying face detector.
 */
private Frame padFrameBottom(Frame originalFrame, int newHeight) {
    Frame.Metadata metadata = originalFrame.getMetadata();
    int width = metadata.getWidth();
    int height = metadata.getHeight();
    Log.i(TAG, "Padded image from: " + width + "x" + height + " to " + width + "x" + newHeight);
    ByteBuffer origBuffer = originalFrame.getGrayscaleImageData();
    int origOffset = origBuffer.arrayOffset();
    byte[] origBytes = origBuffer.array();
    // This can be changed to just .allocate in the future, when Frame supports non-direct
    // byte buffers.
    ByteBuffer paddedBuffer = ByteBuffer.allocateDirect(width * newHeight);
    int paddedOffset = paddedBuffer.arrayOffset();
    byte[] paddedBytes = paddedBuffer.array();
    Arrays.fill(paddedBytes, (byte) 0);
    // part.
    for (int y = 0; y < height; ++y) {
        int origStride = origOffset + y * width;
        int paddedStride = paddedOffset + y * width;
        System.arraycopy(origBytes, origStride, paddedBytes, paddedStride, width);
    }
    return new Frame.Builder().setImageData(paddedBuffer, width, newHeight, ImageFormat.NV21).setId(metadata.getId()).setRotation(metadata.getRotation()).setTimestampMillis(metadata.getTimestampMillis()).build();
}

Example 5 with Frame

use of com.google.android.gms.vision.Frame in project CameraKit-Android by flurgle.

the class FrameProcessingRunnable method run.

/**
 * As long as the processing thread is active, this executes detection on frames
 * continuously.  The next pending frame is either immediately available or hasn't been
 * received yet.  Once it is available, we transfer the frame info to local variables and
 * run detection on that frame.  It immediately loops back for the next frame without
 * pausing.
 * <p/>
 * If detection takes longer than the time in between new frames from the camera, this will
 * mean that this loop will run without ever waiting on a frame, avoiding any context
 * switching or frame acquisition time latency.
 * <p/>
 * If you find that this is using more CPU than you'd like, you should probably decrease the
 * FPS setting above to allow for some idle time in between frames.
 */
@Override
public void run() {
    Frame outputFrame;
    java.nio.ByteBuffer data;
    while (true) {
        synchronized (mLock) {
            while (mActive && (mPendingFrameData == null)) {
                try {
                    // Wait for the next frame to be received from the camera, since we
                    // don't have it yet.
                    mLock.wait();
                } catch (InterruptedException e) {
                    return;
                }
            }
            if (!mActive) {
                // loop.
                return;
            }
            if (mPreviewSize == null) {
                // wait for this to be  set
                Log.d("WHAT", "waitin for preview size to not be null");
                continue;
            }
            outputFrame = new Frame.Builder().setImageData(mPendingFrameData, mPreviewSize.getWidth(), mPreviewSize.getHeight(), android.graphics.ImageFormat.NV21).setId(mPendingFrameId).setTimestampMillis(mPendingTimeMillis).setRotation(0).build();
            // Hold onto the frame data locally, so that we can use this for detection
            // below.  We need to clear mPendingFrameData to ensure that this buffer isn't
            // recycled back to the camera before we are done using that data.
            data = mPendingFrameData;
            mPendingFrameData = null;
        }
        try {
            mDetector.receiveFrame(outputFrame);
        } catch (Throwable t) {
            Log.e(TAG, "Exception thrown from receiver.", t);
        } finally {
            mCamera.addCallbackBuffer(data.array());
        }
    }
}