Cyberax

int generate_indexed_something(size_t BufPixels, xxx ResultArray, xxx pixels, int_t pixlen)
{
    PyObject * BufString = 0;
    PyObject * Result = 0;

    /* extend ResultArray by a bunch of converted pixels at a time */
    if (BufPixels % 4 != 0)
    {
      /* fill out unused part of byte with zeroes--actually shouldn't occur */
      PixBuf[BufPixels / 4] &= ~(0xff << BufPixels % 4 * 2);

Cyberax

static void ParseColorsTuple
(
    PyObject * ColorTuple,
    uint32_t * colors /* array of 4 elements */
)
/* parses ColorTuple as a tuple of 4 elements, each in turn being a tuple of
  4 integers (r, g, b, a) each in the range [0 .. 255]. Puts the result as
  Cairo-format pixel values into colors. */
{
  PyObject * TheColors[4] = {0, 0, 0, 0};