public void onCameraViewStarted(int width, int height) {
        try {
            mOpenCvCameraView.setFocusMode(Camera.Parameters.FOCUS_MODE_CONTINUOUS_VIDEO);
        } catch (Exception e) {
            Toast.makeText(this, e.getMessage(), Toast.LENGTH_SHORT).show();
        }

        renderer.SetFov(mOpenCvCameraView.getFovX(), mOpenCvCameraView.getFovY());
        mResolutionList = mOpenCvCameraView.getResolutionList();
        Camera.Size sz = mOpenCvCameraView.getResolution();
        if (findRes(864, 480)) {
            camWidth = sz.width = 864;
            camHeight = sz.height = 480;
            mOpenCvCameraView.setFocusMode(Camera.Parameters.FOCUS_MODE_CONTINUOUS_VIDEO);
            mOpenCvCameraView.setResolution(sz);
            renderer.SetCameraSize(mOpenCvCameraView.getResolution().width, mOpenCvCameraView.getResolution().height,
                    mOpenCvCameraView.mScale);
            return;
        }
        if (findRes(800, 480)) {
            camWidth = sz.width = 800;
            camHeight = sz.height = 480;
            mOpenCvCameraView.setFocusMode(Camera.Parameters.FOCUS_MODE_CONTINUOUS_VIDEO);
            mOpenCvCameraView.setResolution(sz);
            renderer.SetCameraSize(mOpenCvCameraView.getResolution().width, mOpenCvCameraView.getResolution().height,
                    mOpenCvCameraView.mScale);
            return;
        }
        if (findRes(720, 480)) {
            camWidth = sz.width = 720;
            camHeight = sz.height = 480;
            mOpenCvCameraView.setFocusMode(Camera.Parameters.FOCUS_MODE_CONTINUOUS_VIDEO);
            mOpenCvCameraView.setResolution(sz);
            renderer.SetCameraSize(mOpenCvCameraView.getResolution().width, mOpenCvCameraView.getResolution().height,
                    mOpenCvCameraView.mScale);
            return;
        }
        if (findRes(960, 540)) {
            camWidth = sz.width = 960;
            camHeight = sz.height = 540;
            mOpenCvCameraView.setFocusMode(Camera.Parameters.FOCUS_MODE_CONTINUOUS_VIDEO);
            mOpenCvCameraView.setResolution(sz);
            renderer.SetCameraSize(mOpenCvCameraView.getResolution().width, mOpenCvCameraView.getResolution().height,
                    mOpenCvCameraView.mScale);
            return;
        }
        if (findRes(640, 480)) {
            camWidth = sz.width = 640;
            camHeight = sz.height = 480;
            mOpenCvCameraView.setFocusMode(Camera.Parameters.FOCUS_MODE_CONTINUOUS_VIDEO);
            mOpenCvCameraView.setResolution(sz);
            renderer.SetCameraSize(mOpenCvCameraView.getResolution().width, mOpenCvCameraView.getResolution().height,
                    mOpenCvCameraView.mScale);
            return;
        }
    }