Android Opencv 显示在surface错乱问题

window_buffer.bits的数据不是根据window_buffer.width而是根据window_buffer.stride来决定的，
而目标区域要绘制在window_buffer.width x window_buffer.height 区域内，因此要设置ROI。

    ANativeWindow_setBuffersGeometry(window, rgba.cols, rgba.rows, WINDOW_FORMAT_RGBA_8888);

    ANativeWindow_Buffer window_buffer;
    if (ANativeWindow_lock(window, &window_buffer, nullptr)) {
        ANativeWindow_release(window);
        window = nullptr;
        return;
    }
    long millis = currentTimeMillis();
    Mat winBuffer(window_buffer.height,window_buffer.stride,CV_8UC4,window_buffer.bits);
    Mat roi(winBuffer,Rect(0,0, rgba.cols, rgba.rows));
    rgba.copyTo(roi);
    LOGD("Cost time %d ms",(currentTimeMillis()-millis));