Usage.md

Usage

First

You can first give the warehouse a star, your star is the driving force of our efforts, this SDK is definitely your star. We are still in continuous iteration, please support us, your one star is our supervision. thank a lot.

Second

...

import com.tenginekit.FaceManager;

public class CameraActivity extends AppCompatActivity implements Camera.PreviewCallback{
    private static final String TAG = "CameraActicity";

    // camera preview width
    protected int previewWidth;
    // camera preview height
    protected int previewHeight;
    // content display screen width
    public static float ScreenWidth;
    // content display screen height
    public static float ScreenHeight;

    // nv21 data from camera
    protected byte[] mNV21Bytes;

    ...

    public void Init() {
        mNV21Bytes = new byte[previewHeight * previewWidth];

        /**
         * init
         * */
        Face.init(
                this,
                AndroidConfig
                        .create()
                        .setCameraMode()
                        .setDefaultFunc()
                        .setDefaultInputImageFormat()
                        .setNormalMode()
                        .setInputImageSize(previewWidth, previewHeight)
                        .setOutputImageSize((int) ScreenWidth, (int) ScreenHeight)
        );
    }

    /**
     * Callback for android.hardware.Camera API
     */
    @Override
    public void onPreviewFrame(final byte[] bytes, final Camera camera) {
        if (isProcessingFrame) {
            return;
        }
        isProcessingFrame = true;
        try {
            if (mNV21Bytes == null) {

                ...

                Camera.Size previewSize = camera.getParameters().getPreviewSize();
                previewHeight = previewSize.height;
                previewWidth = previewSize.width;
                Init();
                
                ...
            }
        } catch (final Exception e) {
            MyLogger.logError(TAG, "onPreviewFrame: " + e);
            return;
        }
        
        processImage();
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        /**
         * release
         * */
        Face.release();
    }
   

    protected void processImage() {

        ...

        Face.FaceDetect faceDetect = Face.detect(mNV21Bytes);
        List<FaceDetectInfo> faceDetectInfos = new ArrayList<>();
        List<FaceLandmarkInfo> landmarkInfos = new ArrayList<>();
        if(faceDetect.getFaceCount() > 0){
            faceDetectInfos = faceDetect.getDetectInfos();
            landmarkInfos = faceDetect.landmark2d();
        }

        if (faceDetectInfos != null && faceDetectInfos.size() > 0) {
            Rect[] face_rect = new Rect[faceDetectInfos.size()];

            List<List<TenginekitPoint>> face_landmarks = new ArrayList<>();
            for (int i = 0; i < faceDetectInfos.size(); i++) {
                Rect rect = new Rect();
                rect = faceDetectInfos.get(i).asRect();
                face_rect[i] = rect;
                face_landmarks.add(landmarkInfos.get(i).landmarks);
            }

            // do something with face_rect, face_landmarks
        }

        ...

    }
}