reactos/subsys/win32k/dib/dib24bpp.c

   1 #undef WIN32_LEAN_AND_MEAN
   2 #include <windows.h>
   3 #include <stdlib.h>
   4 #include <win32k/bitmaps.h>
   5 #include <win32k/debug.h>
   6 #include <debug.h>
   7 #include <ddk/winddi.h>
   8 #include "..\eng\objects.h"
   9 #include "dib.h"
  10
  11 VOID DIB_24BPP_PutPixel(PSURFOBJ SurfObj, LONG x, LONG y, RGBTRIPLE c)
  12 {
  13   PBYTE byteaddr = SurfObj->pvBits + y * SurfObj->lDelta;
  14   PRGBTRIPLE addr = (PRGBTRIPLE)byteaddr + x;
  15
  16   *addr = c;
  17 }
  18
  19 RGBTRIPLE DIB_24BPP_GetPixel(PSURFOBJ SurfObj, LONG x, LONG y)
  20 {
  21   PBYTE byteaddr = SurfObj->pvBits + y * SurfObj->lDelta;
  22   PRGBTRIPLE addr = (PRGBTRIPLE)byteaddr + x;
  23
  24   return *addr;
  25 }
  26
  27 VOID DIB_24BPP_HLine(PSURFOBJ SurfObj, LONG x1, LONG x2, LONG y, RGBTRIPLE c)
  28 {
  29   PBYTE byteaddr = SurfObj->pvBits + y * SurfObj->lDelta;
  30   PRGBTRIPLE addr = (PRGBTRIPLE)byteaddr + x1;
  31   LONG cx = x1;
  32
  33   while(cx <= x2) {
  34     *addr = c;
  35     ++addr;
  36     ++cx;
  37   }
  38 }
  39
  40 VOID DIB_24BPP_VLine(PSURFOBJ SurfObj, LONG x, LONG y1, LONG y2, RGBTRIPLE c)
  41 {
  42   PBYTE byteaddr = SurfObj->pvBits + y1 * SurfObj->lDelta;
  43   PRGBTRIPLE addr = (PRGBTRIPLE)byteaddr + x;
  44   ULONG  lDelta = SurfObj->lDelta;
  45
  46   byteaddr = (PBYTE)addr;
  47   while(y1++ <= y2) {
  48     *addr = c;
  49
  50     byteaddr += lDelta;
  51     addr = (PRGBTRIPLE)byteaddr;
  52   }
  53 }
  54
  55 VOID DIB_24BPP_BltTo_24BPP(PSURFOBJ dstpsd, LONG dstx, LONG dsty, LONG w, LONG h,
  56   PSURFOBJ srcpsd, LONG srcx, LONG srcy)
  57 {
  58   PRGBTRIPLE  dst;
  59   PRGBTRIPLE  src;
  60   PBYTE  bytedst;
  61   PBYTE  bytesrc;
  62   int  i;
  63   int  dlDelta = dstpsd->lDelta;
  64   int  slDelta = srcpsd->lDelta;
  65
  66   bytedst = (char *)dstpsd->pvBits + dsty * dlDelta;
  67   bytesrc = (char *)srcpsd->pvBits + srcy * slDelta;
  68   dst = (PRGBTRIPLE)bytedst + dstx;
  69   src = (PRGBTRIPLE)bytesrc + srcx;
  70
  71   while(--h >= 0) {
  72     PRGBTRIPLE  d = dst;
  73     PRGBTRIPLE  s = src;
  74     LONG  dx = dstx;
  75     LONG  sx = srcx;
  76     for(i=0; i<w; ++i) {
  77       *d = *s;
  78       ++d;
  79       ++s;
  80     }
  81     dst += dlDelta;
  82     src += slDelta;
  83   }
  84 }
  85
  86 BOOLEAN DIB_To_24BPP_Bitblt(  SURFOBJ *DestSurf, SURFOBJ *SourceSurf,
  87         SURFGDI *DestGDI,  SURFGDI *SourceGDI,
  88         PRECTL  DestRect,  POINTL  *SourcePoint,
  89         ULONG   Delta,     XLATEOBJ *ColorTranslation)
  90 {
  91   ULONG    i, j, sx, xColor, f1;
  92   PBYTE    DestBits, SourceBits_24BPP, DestLine, SourceLine_24BPP;
  93   PRGBTRIPLE  SPDestBits, SPSourceBits_24BPP, SPDestLine, SPSourceLine_24BPP; // specially for 24-to-24 blit
  94   PBYTE    SourceBits_4BPP, SourceBits_8BPP, SourceLine_4BPP, SourceLine_8BPP;
  95   PWORD    SourceBits_16BPP, SourceLine_16BPP;
  96   PDWORD    SourceBits_32BPP, SourceLine_32BPP;
  97
  98   DestBits = DestSurf->pvBits + (DestRect->top * DestSurf->lDelta) + DestRect->left * 3;
  99
 100   switch(SourceGDI->BitsPerPixel)
 101   {
 102     case 4:
 103       SourceBits_4BPP = SourceSurf->pvBits + (SourcePoint->y * SourceSurf->lDelta) + SourcePoint->x;
 104
 105       for (j=DestRect->top; j<DestRect->bottom; j++)
 106       {
 107         SourceLine_4BPP = SourceBits_4BPP;
 108         DestLine = DestBits;
 109         sx = SourcePoint->x;
 110         f1 = sx & 1;
 111
 112         for (i=DestRect->left; i<DestRect->right; i++)
 113         {
 114           xColor = XLATEOBJ_iXlate(ColorTranslation,
 115               (*SourceLine_4BPP & altnotmask[sx&1]) >> (4 * (1-(sx & 1))));
 116           *DestLine++ = xColor & 0xff;
 117           *(PWORD)DestLine = xColor >> 8;
 118           DestLine += 2;
 119           if(f1 == 1) { SourceLine_4BPP++; f1 = 0; } else { f1 = 1; }
 120           sx++;
 121         }
 122
 123         SourceBits_4BPP += SourceSurf->lDelta;
 124         DestBits += DestSurf->lDelta;
 125       }
 126       break;
 127
 128     default:
 129       DbgPrint("DIB_24BPP_Bitblt: Unhandled Source BPP: %u\n", SourceGDI->BitsPerPixel);
 130       return FALSE;
 131   }
 132
 133   return TRUE;
 134 }