rom/graphics/getrgb32.c

   1 /*
   2     Copyright © 1995-2012, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Desc: Graphics function GetRGB32()
   6     Lang: english
   7 */
   8 #include <graphics/view.h>
   9 #include "graphics_intern.h"
  10
  11 /*****************************************************************************
  12
  13     NAME */
  14 #include <proto/graphics.h>
  15
  16         AROS_LH4(void, GetRGB32,
  17
  18 /*  SYNOPSIS */
  19         AROS_LHA(struct ColorMap *, cm        , A0),
  20         AROS_LHA(ULONG            , firstcolor, D0),
  21         AROS_LHA(ULONG            , ncolors   , D1),
  22         AROS_LHA(ULONG *          , table     , A1),
  23
  24 /*  LOCATION */
  25         struct GfxBase *, GfxBase, 150, Graphics)
  26
  27 /*  FUNCTION
  28         Fill the table with the 32 bit fractional RGB values from the
  29         given colormap.
  30
  31     INPUTS
  32         cm         - ColorMap structure obtained via GetColorMap()
  33         firstcolor - the index of first color register to get (starting with 0)
  34         ncolors    - the number of color registers to examine and write
  35                      into the table
  36         table      - a pointer to an array of 32 bit RGB triplets
  37
  38     RESULT
  39         the ULONG pointed to by table will be filled with the 32 bit
  40         fractional RGB values from the colormap
  41
  42     NOTES
  43         table should point to an array of at least 3*ncolors longwords.
  44
  45     EXAMPLE
  46
  47     BUGS
  48
  49     SEE ALSO
  50         GetColorMap(), FreeColorMap(), SetRGB4(), LoadRGB4()
  51         LoadRGB32(), SetRGB32CM(), graphics/view.h
  52
  53     INTERNALS
  54         This function depends on the ColorMap->ColorTable structure
  55
  56     HISTORY
  57
  58 *****************************************************************************/
  59 {
  60     AROS_LIBFUNC_INIT
  61
  62     ULONG i,n;
  63
  64     for (i = firstcolor, n = 0; i < (ncolors+firstcolor); i++ )
  65     {
  66         ULONG red, green, blue;
  67
  68         color_get(cm, &red, &green, &blue, i);
  69
  70         table[n++] = red;
  71         table[n++] = green;
  72         table[n++] = blue;
  73     }
  74
  75     AROS_LIBFUNC_EXIT
  76
  77 } /* GetRGB32 */