rom/graphics/convertpixelsa.c

   1 /*
   2     Copyright  1995-2007, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Desc: Function to convert pixels from one pixfmt into another
   6     Lang: english
   7 */
   8
   9 #include "graphics_intern.h"
  10 #include <proto/graphics.h>
  11 #include <proto/oop.h>
  12
  13 #include <aros/debug.h>
  14
  15 /*****************************************************************************
  16
  17     NAME */
  18
  19         AROS_LH9(ULONG, ConvertPixelsA,
  20
  21 /*  SYNOPSIS */
  22         AROS_LHA(APTR, srcPixels, A0),
  23         AROS_LHA(ULONG, srcMod, D0),
  24         AROS_LHA(ULONG, srcPixFmt, D1),
  25         AROS_LHA(APTR, dstPixels, A1),
  26         AROS_LHA(ULONG, dstMod, D2),
  27         AROS_LHA(ULONG, dstPixFmt, D3),
  28         AROS_LHA(ULONG, width, D4),
  29         AROS_LHA(ULONG, height, D5),
  30         AROS_LHA(struct TagItem *, tags, A2),
  31
  32 /*  LOCATION */
  33         struct GfxBase *, GfxBase, 199, Graphics)
  34
  35 /*  FUNCTION
  36         Convert pixels in pixel buffer srcPixels from srcPixFmt to
  37         dstPixFmt putting result into pixel buffer dstPixels.
  38
  39     INPUTS
  40         srcPixels, dstPixels - Pointer to source/dest pixel buffer
  41         srcPixFmt, dstPixFmt - One of the truecolor vHidd_StdPixFmt_#?
  42         srcMod, dstMod - Modulo for src/dest pixel buffer
  43         width, height - size of area to convert
  44         tags - none defined yet
  45
  46     RESULT
  47         0 on failure (bad pixfmts), 1 on success.
  48
  49     NOTES
  50
  51     EXAMPLE
  52
  53     BUGS
  54
  55     SEE ALSO
  56         <hidd/graphics.h>
  57
  58     INTERNALS
  59
  60     HISTORY
  61
  62 *****************************************************************************/
  63 {
  64     AROS_LIBFUNC_INIT
  65
  66     OOP_Object *srcpf, *dstpf, *bm;
  67     APTR        src = srcPixels;
  68     APTR        dst = dstPixels;
  69
  70     (void)tags;
  71
  72     if (!SDD(GfxBase)->gfxhidd) return 0;
  73     bm = SDD(GfxBase)->bm_bak;
  74     if (!bm)
  75         bm = SDD(GfxBase)->framebuffer;
  76     if (!bm)
  77         return 0;
  78
  79     srcpf = HIDD_Gfx_GetPixFmt(SDD(GfxBase)->gfxhidd, srcPixFmt);
  80     dstpf = HIDD_Gfx_GetPixFmt(SDD(GfxBase)->gfxhidd, dstPixFmt);
  81
  82     if (!srcpf || !dstpf)
  83     {
  84         D(bug("graphics.library/ConvertPixelsA(): Bad source (%d) or dest (%d) pixfmt!\n", srcPixFmt, dstPixFmt));
  85         return 0;
  86     }
  87
  88     HIDD_BM_ConvertPixels(bm, &src, srcpf, srcMod,
  89                           &dst, dstpf, dstMod,
  90                           width, height, NULL);
  91
  92     return 1;
  93
  94     AROS_LIBFUNC_EXIT
  95
  96 } /* ConvertPixelsA */