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       gcpUnmapRGBAPixel,        gcpUnpackRGBAPixels,        gcpUnmapYUVPixel,
       gcpUnpackYUVPixels,       gcpUnmapCMYKPixel,       gcpUnpackCMYKPixels,
       gcpUnmapHSVPixel,         gcpUnpackHSVPixels,         gcpUnmapYCCPixel,
       gcpUnpackYCCPixels - Convert from gcp_pixel(s) to gcp_*colors(s)


       #include <ggi/gcp.h>

       int gcpUnmapRGBAPixel(ggi_visual_t vis,
                     gcp_pixel pixel,gcp_RGBAcolor *col);
       int gcpUnpackRGBAPixels(ggi_visual_t vis,
                     void *buf,gcp_RGBAcolor *cols,int len);

       int gcpUnmapYUVPixel(ggi_visual_t vis,
                     gcp_pixel pixel, gcp_YUVcolor *col);
       int gcpUnpackYUVPixels(ggi_visual_t vis,
                     void *buf,gcp_YUVcolor *cols,int len);

       int gcpUnmapCMYKPixel(ggi_visual_t vis,
                     gcp_pixel pixel, gcp_CMYKcolor *col);
       int gcpUnpackCMYKPixels(ggi_visual_t vis,
                     void *buf,gcp_CMYKcolor *cols,int len);

       int gcpUnmapHSVPixel(ggi_visual_t vis,
                     gcp_pixel pixel, gcp_HSVcolor *col);
       int gcpUnpackHSVPixels(ggi_visual_t vis,
                     void *buf,gcp_HSVcolor *cols,int len);

       int gcpUnmapYCCPixel(ggi_visual_t vis,
                     gcp_pixel pixel, gcp_YCCcolor *col);
       int gcpUnpackYCCPixels(ggi_visual_t vis,
                     void *buf,gcp_YCCcolor *cols,int len);


       gcpUnmap*Pixel gets the color associated with the given pixelvalue.

       gcpUnpack*Pixels converts the pixelvalues in buf to individual elements
       of  cols.   This  function may be used to convert buffers output by the
       ggiGet{HLine,VLine,Box} functions from the pixelvalue representation to
       their actual colors as defined by gcp_color(3).

       Try  to  cache  the  results  of  color lookups in your application for
       efficiency purposes.


       gcpUnmap*Pixel and gcpUnpack*Pixels return 0 for OK, otherwise an  ggi-
       error(3) code.


       gcp_color(3), gcp_pixel(3),

       gcpMapRGBAColor(3),       gcpPackRGBAColors(3),      gcpMapYUVColor(3),
       gcpPackYUVColors(3),     gcpMapCMYKColor(3),      gcpPackCMYKColors(3),
       gcpMapHSVColor(3),        gcpPackHSVColors(3),       gcpMapYCCColor(3),
       gcpPackYCCColors(3) ggiGetBox(3), ggiGetHLine(3), ggiGetVLine(3)