message: gapi: avoid dynamic initialization in dispatched files
diff: @@ -876,11 +876,12 @@ void run_yuv2rgb_impl(uchar out[], const uchar in[], int width, const float coef
  // V' = (R' - Y')*0.877
  static const float coef[5] = {0.299f, 0.587f, 0.114f, 0.492f, 0.877f};
  -static const ushort c0 = static_cast<ushort>(coef[0]*(1 << 16) + 0.5f);
  -static const ushort c1 = static_cast<ushort>(coef[1]*(1 << 16) + 0.5f);
  -static const ushort c2 = static_cast<ushort>(coef[2]*(1 << 16) + 0.5f);
  -static const short c3 = static_cast<short>(coef[3]*(1 << 12) + 0.5f);
  -static const short c4 = static_cast<short>(coef[4]*(1 << 12) + 0.5f);
  +// don't use expressions (avoid any dynamic initialization): https://github.com/opencv/opencv/issues/15690
  +static const ushort c0 = 19595; // static_cast<ushort>(coef[0]*(1 << 16) + 0.5f);
  +static const ushort c1 = 38470; // static_cast<ushort>(coef[1]*(1 << 16) + 0.5f);
  +static const ushort c2 = 7471; // static_cast<ushort>(coef[2]*(1 << 16) + 0.5f);
  +static const short c3 = 2015; // static_cast<short>(coef[3]*(1 << 12) + 0.5f);
  +static const short c4 = 3592; // static_cast<short>(coef[4]*(1 << 12) + 0.5f);
  void run_rgb2yuv422_impl(uchar out[], const uchar in[], int width)
  {
  