/* Decode columns by checking if they are skipped  */
static void decode_colskip(uint8_t *plane, int width, int height, int stride, GetBitContext *gb)
/* Decode columns by checking if they are skipped  */
static void decode_colskip(uint8_t *plane, int width, int height, int stride, GetBitContext *gb)
{
        if (!get_bits1(gb))
            for (y=0; y<height; y++)
                plane[y*stride] = 0;
        else
            for (y=0; y<height; y++)
                plane[y*stride] = get_bits1(gb);
        plane ++;
    }
}