rom/graphics/freecolormap.c

   1 /*
   2     Copyright © 1995-2007, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Desc: Graphics function GetColorMap()
   6     Lang: english
   7 */
   8 #include "exec/memory.h"
   9 #include "exec/types.h"
  10 #include "proto/exec.h"
  11 #include "graphics/view.h"
  12 #include "graphics_intern.h"
  13
  14 /*****************************************************************************
  15
  16     NAME */
  17 #include <proto/graphics.h>
  18
  19         AROS_LH1(void, FreeColorMap,
  20
  21 /*  SYNOPSIS */
  22         AROS_LHA(struct ColorMap *, colormap, A0),
  23
  24 /*  LOCATION */
  25         struct GfxBase *, GfxBase, 96, Graphics)
  26
  27 /*  FUNCTION
  28         Correctly frees a ColorMap structure and associated structures
  29         that have previously been allocated via GetColorMap().
  30
  31     INPUTS
  32         colormap - pointer to the ColorMap structure previously
  33                    allocated via GetColorMap().
  34
  35     RESULT
  36         Memory returned to pool of free memory.
  37
  38     NOTES
  39
  40     EXAMPLE
  41
  42     BUGS
  43
  44     SEE ALSO
  45         GetColorMap(), SetRGB4(), graphics/view.h
  46
  47     INTERNALS
  48         Also frees a possibly connected PaletteExtra and ViewPortExtra
  49         structure. Possibly wrong, though.
  50
  51     HISTORY
  52
  53 *****************************************************************************/
  54 {
  55     AROS_LIBFUNC_INIT
  56
  57     /* if colormap != NULL return the memory */
  58     if (NULL != colormap)
  59     {
  60         /* free the ColorTable */
  61         FreeMem(colormap->ColorTable  , (colormap->Count) * sizeof(UWORD));
  62
  63         /* free the LowColorBits */
  64         FreeMem(colormap->LowColorBits, (colormap->Count) * sizeof(UWORD));
  65
  66         /* free a ViewPortExtra structure that might be connected to this one */
  67         if (NULL != colormap->cm_vpe)
  68             GfxFree((struct ExtendedNode *)colormap->cm_vpe);
  69
  70         /* free a PaletteExtra structure that might be connected to this */
  71         if (NULL != colormap->PalExtra)
  72         {
  73             FreeMem(colormap->PalExtra->pe_RefCnt   , colormap->Count * sizeof(PalExtra_RefCnt_Type));
  74             FreeMem(colormap->PalExtra->pe_AllocList, colormap->Count * sizeof(PalExtra_AllocList_Type));
  75             FreeMem(colormap->PalExtra, sizeof(struct PaletteExtra));
  76         }
  77         /* free the structure itself */
  78         FreeMem(colormap, sizeof(struct ColorMap));
  79     }
  80
  81     AROS_LIBFUNC_EXIT
  82
  83 } /* FreeColorMap */