public static void h264_qpel_mc31_c(int opcode, int size, byte[] dst_base, int dst_offset, byte[] src_base, int src_offset, int stride)
{
byte[] full = new byte[size * (size + 5)];
int full_mid = size * 2;
byte[] halfH = new byte[size * size];
byte[] halfV = new byte[size * size];
h264_qpel_h_lowpass(0, size, halfH, 0, src_base, src_offset, size, stride);
copy_block(size, full, 0, src_base, src_offset - stride * 2 + 1, size, stride, size + 5);
h264_qpel_v_lowpass(0, size, halfV, 0, full, full_mid, size, size);
pixels_l2(opcode, size, dst_base, dst_offset, halfH, 0, halfV, 0, stride, size, size, size);
}