Function write_test

cups/rasterbench.c:249–337

 */

static void
write_test(int         fd,		/* I - File descriptor to write to */
           cups_mode_t mode)		/* I - Write mode */
{
  unsigned		page, x, y;	/* Looping vars */
  unsigned		count;		/* Number of bytes to set */
  cups_raster_t		*r;		/* Raster stream */
  cups_page_header2_t	header;		/* Page header */
  unsigned char		data[32][8 * TEST_WIDTH];
					/* Raster data to write */


 /*
  * Create a combination of random data and repeated data to simulate
  * text with some whitespace.
  */

  CUPS_SRAND(time(NULL));

  memset(data, 0, sizeof(data));

  for (y = 0; y < 28; y ++)
  {
    for (x = CUPS_RAND() & 127, count = (CUPS_RAND() & 15) + 1;
         x < sizeof(data[0]);
         x ++, count --)
    {
      if (count <= 0)
      {
	x     += (CUPS_RAND() & 15) + 1;
	count = (CUPS_RAND() & 15) + 1;

        if (x >= sizeof(data[0]))
	  break;
      }

      data[y][x] = (unsigned char)CUPS_RAND();
    }
  }

 /*
  * Test write speed...
  */

  if ((r = cupsRasterOpen(fd, mode)) == NULL)
  {
    perror("Unable to create raster output stream");
    return;
  }

  for (page = 0; page < TEST_PAGES; page ++)
  {
    memset(&header, 0, sizeof(header));
    header.cupsWidth        = TEST_WIDTH;
    header.cupsHeight       = TEST_HEIGHT;
    header.cupsBytesPerLine = TEST_WIDTH;

    if (page & 1)