workbench/classes/zune/betterstring/mcc/AllocBitMap.c

   1 /***************************************************************************
   2
   3  BetterString.mcc - A better String gadget MUI Custom Class
   4  Copyright (C) 1997-2000 Allan Odgaard
   5  Copyright (C) 2005-2009 by BetterString.mcc Open Source Team
   6
   7  This library is free software; you can redistribute it and/or
   8  modify it under the terms of the GNU Lesser General Public
   9  License as published by the Free Software Foundation; either
  10  version 2.1 of the License, or (at your option) any later version.
  11
  12  This library is distributed in the hope that it will be useful,
  13  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  Lesser General Public License for more details.
  16
  17  BetterString class Support Site:  http://www.sf.net/projects/bstring-mcc/
  18
  19  $Id$
  20
  21 ***************************************************************************/
  22
  23 #include <exec/memory.h>
  24 #include <exec/libraries.h>
  25 #include <proto/graphics.h>
  26 #include <proto/exec.h>
  27
  28 #include <SDI/SDI_compiler.h>
  29
  30 #if 0
  31 #define USE_OS3 (1)
  32 #else
  33 #define USE_OS3 (((struct Library *)GfxBase)->lib_Version >= 39)
  34 #endif
  35
  36 struct BitMap * SAVEDS ASM MUIG_AllocBitMap(REG(d0, LONG width), REG(d1, LONG height), REG(d2, LONG depth), REG(d3, LONG flags), REG(a0, struct BitMap *friend))
  37 {
  38   #if defined(__amigaos4__)
  39   return AllocBitMap(width,height,depth,flags,friend);
  40   #elif defined(__MORPHOS__) || defined(__AROS__)
  41   // FIXME: check if this is correct for AROS
  42   return AllocBitMap(width,height,depth,flags|BMF_MINPLANES|BMF_DISPLAYABLE,friend);
  43   #else
  44   if(USE_OS3)
  45   {
  46     if(friend != NULL)
  47     {
  48       // FindSemaphore() must be called in Forbid()den state
  49       Forbid();
  50       if(FindSemaphore((STRPTR)"cybergraphics.library") != NULL
  51          && (GetBitMapAttr(friend,BMA_FLAGS) & BMF_INTERLEAVED) == 0)
  52         flags |= BMF_MINPLANES;
  53       else
  54         friend = NULL;
  55       Permit();
  56     }
  57
  58     return AllocBitMap(width,height,depth,flags,friend);
  59   }
  60   else
  61   {
  62     struct BitMap *bm = AllocMem(sizeof(struct BitMap), MEMF_CLEAR);
  63
  64     if(bm != NULL)
  65     {
  66       int i, plsize=RASSIZE(width,height);
  67
  68       InitBitMap(bm,depth,width,height);
  69
  70       if((bm->Planes[0] = AllocVec(plsize*depth,(flags & BMF_CLEAR) ? MEMF_CHIP|MEMF_CLEAR : MEMF_CHIP))) // !!!
  71       {
  72         for(i=1;i<depth;i++)
  73           bm->Planes[i] = (PLANEPTR)(((ULONG)bm->Planes[i-1]) + plsize);
  74
  75         return bm;
  76       }
  77       else
  78       {
  79         FreeMem(bm,sizeof(struct BitMap));
  80       }
  81     }
  82
  83     return NULL;
  84   }
  85   #endif
  86 }
  87
  88
  89 VOID SAVEDS ASM MUIG_FreeBitMap(REG(a0, struct BitMap *bm))
  90 {
  91   #if defined(__amigaos4__) || defined(__MORPHOS__) || defined(__AROS__)
  92   FreeBitMap(bm);
  93   #else
  94   WaitBlit(); /* OCS/AGA require manual synchronisation */
  95
  96   if(USE_OS3)
  97   {
  98     FreeBitMap(bm);
  99   }
 100   else
 101   {
 102     FreeVec(bm->Planes[0]);
 103     FreeMem(bm,sizeof(struct BitMap));
 104   }
 105   #endif
 106 }