Function cups_raster_update

cups/raster-stream.c:1572–1762

 */

static int				/* O - 1 on success, 0 on failure */
cups_raster_update(cups_raster_t *r)	/* I - Raster stream */
{
  int		ret = 1;		/* Return value */
  unsigned	bytesPerLine;		/* Expected bytes per line */


  if (r->sync == CUPS_RASTER_SYNCv1 || r->sync == CUPS_RASTER_REVSYNCv1 ||
      r->header.cupsNumColors == 0)
  {
   /*
    * Set the "cupsNumColors" field according to the colorspace...
    */

    switch (r->header.cupsColorSpace)
    {
      case CUPS_CSPACE_W :
      case CUPS_CSPACE_K :
      case CUPS_CSPACE_WHITE :
      case CUPS_CSPACE_GOLD :
      case CUPS_CSPACE_SILVER :
      case CUPS_CSPACE_SW :
          r->header.cupsNumColors = 1;
	  break;

      case CUPS_CSPACE_RGB :
      case CUPS_CSPACE_CMY :
      case CUPS_CSPACE_YMC :
      case CUPS_CSPACE_CIEXYZ :
      case CUPS_CSPACE_CIELab :
      case CUPS_CSPACE_SRGB :
      case CUPS_CSPACE_ADOBERGB :
      case CUPS_CSPACE_ICC1 :
      case CUPS_CSPACE_ICC2 :
      case CUPS_CSPACE_ICC3 :
      case CUPS_CSPACE_ICC4 :
      case CUPS_CSPACE_ICC5 :
      case CUPS_CSPACE_ICC6 :
      case CUPS_CSPACE_ICC7 :
      case CUPS_CSPACE_ICC8 :
      case CUPS_CSPACE_ICC9 :
      case CUPS_CSPACE_ICCA :
      case CUPS_CSPACE_ICCB :
      case CUPS_CSPACE_ICCC :
      case CUPS_CSPACE_ICCD :
      case CUPS_CSPACE_ICCE :
      case CUPS_CSPACE_ICCF :
          r->header.cupsNumColors = 3;
	  break;

      case CUPS_CSPACE_RGBA :
      case CUPS_CSPACE_RGBW :
      case CUPS_CSPACE_CMYK :
      case CUPS_CSPACE_YMCK :
      case CUPS_CSPACE_KCMY :
      case CUPS_CSPACE_GMCK :
      case CUPS_CSPACE_GMCS :
          r->header.cupsNumColors = 4;