rom/graphics/nextdisplayinfo.c

   1 /*
   2     Copyright © 1995-2001, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Desc: Graphics function NextDisplayInfo()
   6     Lang: english
   7 */
   8 #include <graphics/displayinfo.h>
   9 #include <hidd/graphics.h>
  10 #include "graphics_intern.h"
  11 #include "dispinfo.h"
  12
  13 /*****************************************************************************
  14
  15     NAME */
  16 #include <proto/graphics.h>
  17
  18         AROS_LH1(ULONG, NextDisplayInfo,
  19
  20 /*  SYNOPSIS */
  21         AROS_LHA(ULONG, last_ID, D0),
  22
  23 /*  LOCATION */
  24         struct GfxBase *, GfxBase, 122, Graphics)
  25
  26 /*  FUNCTION
  27
  28     INPUTS
  29         last_ID - previous displayinfo identifier
  30                   or INVALID_ID if beginning iteration
  31
  32     RESULT
  33         next_ID - subsequent displayinfo identifier
  34                   or INVALID_ID if no more records
  35
  36     NOTES
  37
  38     EXAMPLE
  39
  40     BUGS
  41
  42     SEE ALSO
  43         FindDisplayInfo() GetDisplayInfoData() graphics/displayinfo.h
  44
  45     INTERNALS
  46
  47     HISTORY
  48
  49
  50 ******************************************************************************/
  51 {
  52     AROS_LIBFUNC_INIT
  53     AROS_LIBBASE_EXT_DECL(struct GfxBase *,GfxBase)
  54
  55     OOP_Object *sync, *pixfmt;
  56
  57     HIDDT_ModeID hiddmode;
  58     ULONG id;
  59
  60     hiddmode = (HIDDT_ModeID)AMIGA_TO_HIDD_MODEID(last_ID);
  61
  62     /* Get the next modeid */
  63     hiddmode = HIDD_Gfx_NextModeID(SDD(GfxBase)->gfxhidd, hiddmode, &sync, &pixfmt);
  64
  65     id = HIDD_TO_AMIGA_MODEID(hiddmode);
  66
  67     return id;
  68
  69     AROS_LIBFUNC_EXIT
  70 } /* NextDisplayInfo */