reactos/subsystems/win32/win32k/dib/dib8bpp.c
Jérôme Gardou 88c9e7c6e8 Sync with trunk (r47116), hopefully without breaking anything.
svn path=/branches/reactos-yarotows/; revision=47117
2010-05-07 07:41:13 +00:00

493 lines
16 KiB
C

/*
* PROJECT: Win32 subsystem
* LICENSE: See COPYING in the top level directory
* FILE: subsystems/win32/win32k/dib/dib8bpp.c
* PURPOSE: Device Independant Bitmap functions, 8bpp
* PROGRAMMERS: Jason Filby
* Thomas Bluemel
* Gregor Anich
*/
#include <win32k.h>
#define NDEBUG
#include <debug.h>
VOID
DIB_8BPP_PutPixel(SURFOBJ *SurfObj, LONG x, LONG y, ULONG c)
{
PBYTE byteaddr = (PBYTE)SurfObj->pvScan0 + y * SurfObj->lDelta + x;
*byteaddr = c;
}
ULONG
DIB_8BPP_GetPixel(SURFOBJ *SurfObj, LONG x, LONG y)
{
PBYTE byteaddr = (PBYTE)SurfObj->pvScan0 + y * SurfObj->lDelta + x;
return (ULONG)(*byteaddr);
}
VOID
DIB_8BPP_HLine(SURFOBJ *SurfObj, LONG x1, LONG x2, LONG y, ULONG c)
{
memset((PBYTE)SurfObj->pvScan0 + y * SurfObj->lDelta + x1, (BYTE) c, x2 - x1);
}
VOID
DIB_8BPP_VLine(SURFOBJ *SurfObj, LONG x, LONG y1, LONG y2, ULONG c)
{
PBYTE byteaddr = (PBYTE)SurfObj->pvScan0 + y1 * SurfObj->lDelta;
PBYTE addr = byteaddr + x;
LONG lDelta = SurfObj->lDelta;
byteaddr = addr;
while(y1++ < y2)
{
*addr = c;
addr += lDelta;
}
}
BOOLEAN
DIB_8BPP_BitBltSrcCopy(PBLTINFO BltInfo)
{
LONG i, j, sx, sy, xColor, f1;
PBYTE SourceBits, DestBits, SourceLine, DestLine;
PBYTE SourceBits_4BPP, SourceLine_4BPP;
DestBits = (PBYTE)BltInfo->DestSurface->pvScan0 + (BltInfo->DestRect.top * BltInfo->DestSurface->lDelta) + BltInfo->DestRect.left;
switch(BltInfo->SourceSurface->iBitmapFormat)
{
case BMF_1BPP:
sx = BltInfo->SourcePoint.x;
sy = BltInfo->SourcePoint.y;
for (j=BltInfo->DestRect.top; j<BltInfo->DestRect.bottom; j++)
{
sx = BltInfo->SourcePoint.x;
for (i=BltInfo->DestRect.left; i<BltInfo->DestRect.right; i++)
{
if(DIB_1BPP_GetPixel(BltInfo->SourceSurface, sx, sy) == 0)
{
DIB_8BPP_PutPixel(BltInfo->DestSurface, i, j, XLATEOBJ_iXlate(BltInfo->XlateSourceToDest, 0));
}
else
{
DIB_8BPP_PutPixel(BltInfo->DestSurface, i, j, XLATEOBJ_iXlate(BltInfo->XlateSourceToDest, 1));
}
sx++;
}
sy++;
}
break;
case BMF_4BPP:
SourceBits_4BPP = (PBYTE)BltInfo->SourceSurface->pvScan0 + (BltInfo->SourcePoint.y * BltInfo->SourceSurface->lDelta) + (BltInfo->SourcePoint.x >> 1);
for (j=BltInfo->DestRect.top; j<BltInfo->DestRect.bottom; j++)
{
SourceLine_4BPP = SourceBits_4BPP;
sx = BltInfo->SourcePoint.x;
f1 = sx & 1;
for (i=BltInfo->DestRect.left; i<BltInfo->DestRect.right; i++)
{
xColor = XLATEOBJ_iXlate(BltInfo->XlateSourceToDest,
(*SourceLine_4BPP & altnotmask[f1]) >> (4 * (1 - f1)));
DIB_8BPP_PutPixel(BltInfo->DestSurface, i, j, xColor);
if(f1 == 1) { SourceLine_4BPP++; f1 = 0; } else { f1 = 1; }
sx++;
}
SourceBits_4BPP += BltInfo->SourceSurface->lDelta;
}
break;
case BMF_8BPP:
if (NULL == BltInfo->XlateSourceToDest || 0 != (BltInfo->XlateSourceToDest->flXlate & XO_TRIVIAL))
{
if (BltInfo->DestRect.top < BltInfo->SourcePoint.y)
{
SourceBits = (PBYTE)BltInfo->SourceSurface->pvScan0 + (BltInfo->SourcePoint.y * BltInfo->SourceSurface->lDelta) + BltInfo->SourcePoint.x;
for (j = BltInfo->DestRect.top; j < BltInfo->DestRect.bottom; j++)
{
RtlMoveMemory(DestBits, SourceBits, BltInfo->DestRect.right - BltInfo->DestRect.left);
SourceBits += BltInfo->SourceSurface->lDelta;
DestBits += BltInfo->DestSurface->lDelta;
}
}
else
{
SourceBits = (PBYTE)BltInfo->SourceSurface->pvScan0 + ((BltInfo->SourcePoint.y + BltInfo->DestRect.bottom - BltInfo->DestRect.top - 1) * BltInfo->SourceSurface->lDelta) + BltInfo->SourcePoint.x;
DestBits = (PBYTE)BltInfo->DestSurface->pvScan0 + ((BltInfo->DestRect.bottom - 1) * BltInfo->DestSurface->lDelta) + BltInfo->DestRect.left;
for (j = BltInfo->DestRect.bottom - 1; BltInfo->DestRect.top <= j; j--)
{
RtlMoveMemory(DestBits, SourceBits, BltInfo->DestRect.right - BltInfo->DestRect.left);
SourceBits -= BltInfo->SourceSurface->lDelta;
DestBits -= BltInfo->DestSurface->lDelta;
}
}
}
else
{
if (BltInfo->DestRect.top < BltInfo->SourcePoint.y)
{
SourceLine = (PBYTE)BltInfo->SourceSurface->pvScan0 + (BltInfo->SourcePoint.y * BltInfo->SourceSurface->lDelta) + BltInfo->SourcePoint.x;
DestLine = DestBits;
for (j = BltInfo->DestRect.top; j < BltInfo->DestRect.bottom; j++)
{
SourceBits = SourceLine;
DestBits = DestLine;
for (i=BltInfo->DestRect.left; i<BltInfo->DestRect.right; i++)
{
*DestBits++ = XLATEOBJ_iXlate(BltInfo->XlateSourceToDest, *SourceBits++);
}
SourceLine += BltInfo->SourceSurface->lDelta;
DestLine += BltInfo->DestSurface->lDelta;
}
}
else
{
SourceLine = (PBYTE)BltInfo->SourceSurface->pvScan0 + ((BltInfo->SourcePoint.y + BltInfo->DestRect.bottom - BltInfo->DestRect.top - 1) * BltInfo->SourceSurface->lDelta) + BltInfo->SourcePoint.x;
DestLine = (PBYTE)BltInfo->DestSurface->pvScan0 + ((BltInfo->DestRect.bottom - 1) * BltInfo->DestSurface->lDelta) + BltInfo->DestRect.left;
for (j = BltInfo->DestRect.bottom - 1; BltInfo->DestRect.top <= j; j--)
{
SourceBits = SourceLine;
DestBits = DestLine;
for (i=BltInfo->DestRect.left; i<BltInfo->DestRect.right; i++)
{
*DestBits++ = XLATEOBJ_iXlate(BltInfo->XlateSourceToDest, *SourceBits++);
}
SourceLine -= BltInfo->SourceSurface->lDelta;
DestLine -= BltInfo->DestSurface->lDelta;
}
}
}
break;
case BMF_16BPP:
SourceLine = (PBYTE)BltInfo->SourceSurface->pvScan0 + (BltInfo->SourcePoint.y * BltInfo->SourceSurface->lDelta) + 2 * BltInfo->SourcePoint.x;
DestLine = DestBits;
for (j = BltInfo->DestRect.top; j < BltInfo->DestRect.bottom; j++)
{
SourceBits = SourceLine;
DestBits = DestLine;
for (i = BltInfo->DestRect.left; i < BltInfo->DestRect.right; i++)
{
xColor = *((PWORD) SourceBits);
*DestBits = XLATEOBJ_iXlate(BltInfo->XlateSourceToDest, xColor);
SourceBits += 2;
DestBits += 1;
}
SourceLine += BltInfo->SourceSurface->lDelta;
DestLine += BltInfo->DestSurface->lDelta;
}
break;
case BMF_24BPP:
SourceLine = (PBYTE)BltInfo->SourceSurface->pvScan0 + (BltInfo->SourcePoint.y * BltInfo->SourceSurface->lDelta) + 3 * BltInfo->SourcePoint.x;
DestLine = DestBits;
for (j = BltInfo->DestRect.top; j < BltInfo->DestRect.bottom; j++)
{
SourceBits = SourceLine;
DestBits = DestLine;
for (i = BltInfo->DestRect.left; i < BltInfo->DestRect.right; i++)
{
xColor = (*(SourceBits + 2) << 0x10) +
(*(SourceBits + 1) << 0x08) +
(*(SourceBits));
*DestBits = XLATEOBJ_iXlate(BltInfo->XlateSourceToDest, xColor);
SourceBits += 3;
DestBits += 1;
}
SourceLine += BltInfo->SourceSurface->lDelta;
DestLine += BltInfo->DestSurface->lDelta;
}
break;
case BMF_32BPP:
SourceLine = (PBYTE)BltInfo->SourceSurface->pvScan0 + (BltInfo->SourcePoint.y * BltInfo->SourceSurface->lDelta) + 4 * BltInfo->SourcePoint.x;
DestLine = DestBits;
for (j = BltInfo->DestRect.top; j < BltInfo->DestRect.bottom; j++)
{
SourceBits = SourceLine;
DestBits = DestLine;
for (i = BltInfo->DestRect.left; i < BltInfo->DestRect.right; i++)
{
xColor = *((PDWORD) SourceBits);
*DestBits = XLATEOBJ_iXlate(BltInfo->XlateSourceToDest, xColor);
SourceBits += 4;
DestBits += 1;
}
SourceLine += BltInfo->SourceSurface->lDelta;
DestLine += BltInfo->DestSurface->lDelta;
}
break;
default:
DPRINT1("DIB_8BPP_Bitblt: Unhandled Source BPP: %u\n", BitsPerFormat(BltInfo->SourceSurface->iBitmapFormat));
return FALSE;
}
return TRUE;
}
/* BitBlt Optimize */
BOOLEAN
DIB_8BPP_ColorFill(SURFOBJ* DestSurface, RECTL* DestRect, ULONG color)
{
ULONG DestY;
for (DestY = DestRect->top; DestY< DestRect->bottom; DestY++)
{
DIB_8BPP_HLine(DestSurface, DestRect->left, DestRect->right, DestY, color);
}
return TRUE;
}
BOOLEAN
DIB_8BPP_TransparentBlt(SURFOBJ *DestSurf, SURFOBJ *SourceSurf,
RECTL* DestRect, RECTL *SourceRect,
XLATEOBJ *ColorTranslation, ULONG iTransColor)
{
ULONG RoundedRight, X, Y, SourceX = 0, SourceY = 0, Source, wd, Dest;
ULONG *DestBits;
LONG DstHeight;
LONG DstWidth;
LONG SrcHeight;
LONG SrcWidth;
DstHeight = DestRect->bottom - DestRect->top;
DstWidth = DestRect->right - DestRect->left;
SrcHeight = SourceRect->bottom - SourceRect->top;
SrcWidth = SourceRect->right - SourceRect->left;
RoundedRight = DestRect->right - ((DestRect->right - DestRect->left) & 0x3);
DestBits = (ULONG*)((PBYTE)DestSurf->pvScan0 + DestRect->left +
(DestRect->top * DestSurf->lDelta));
wd = DestSurf->lDelta - (DestRect->right - DestRect->left);
for(Y = DestRect->top; Y < DestRect->bottom; Y++)
{
DestBits = (ULONG*)((PBYTE)DestSurf->pvScan0 + DestRect->left +
(Y * DestSurf->lDelta));
SourceY = SourceRect->top+(Y - DestRect->top) * SrcHeight / DstHeight;
for (X = DestRect->left; X < RoundedRight; X += 4, DestBits++)
{
Dest = *DestBits;
SourceX = SourceRect->left+(X - DestRect->left) * SrcWidth / DstWidth;
if (SourceX >= 0 && SourceY >= 0 &&
SourceSurf->sizlBitmap.cx > SourceX && SourceSurf->sizlBitmap.cy > SourceY)
{
Source = DIB_GetSourceIndex(SourceSurf, SourceX, SourceY);
if(Source != iTransColor)
{
Dest &= 0xFFFFFF00;
Dest |= (XLATEOBJ_iXlate(ColorTranslation, Source) & 0xFF);
}
}
SourceX = SourceRect->left+(X+1 - DestRect->left) * SrcWidth / DstWidth;
if (SourceX >= 0 && SourceY >= 0 &&
SourceSurf->sizlBitmap.cx > SourceX && SourceSurf->sizlBitmap.cy > SourceY)
{
Source = DIB_GetSourceIndex(SourceSurf, SourceX, SourceY);
if(Source != iTransColor)
{
Dest &= 0xFFFF00FF;
Dest |= ((XLATEOBJ_iXlate(ColorTranslation, Source) << 8) & 0xFF00);
}
}
SourceX = SourceRect->left+(X+2 - DestRect->left) * SrcWidth / DstWidth;
if (SourceX >= 0 && SourceY >= 0 &&
SourceSurf->sizlBitmap.cx > SourceX && SourceSurf->sizlBitmap.cy > SourceY)
{
Source = DIB_GetSourceIndex(SourceSurf, SourceX, SourceY);
if(Source != iTransColor)
{
Dest &= 0xFF00FFFF;
Dest |= ((XLATEOBJ_iXlate(ColorTranslation, Source) << 16) & 0xFF0000);
}
}
SourceX = SourceRect->left+(X+3 - DestRect->left) * SrcWidth / DstWidth;
if (SourceX >= 0 && SourceY >= 0 &&
SourceSurf->sizlBitmap.cx > SourceX && SourceSurf->sizlBitmap.cy > SourceY)
{
Source = DIB_GetSourceIndex(SourceSurf, SourceX, SourceY);
if(Source != iTransColor)
{
Dest &= 0x00FFFFFF;
Dest |= ((XLATEOBJ_iXlate(ColorTranslation, Source) << 24) & 0xFF000000);
}
}
*DestBits = Dest;
}
if(X < DestRect->right)
{
for (; X < DestRect->right; X++)
{
SourceX = SourceRect->left+(X - DestRect->left) * SrcWidth / DstWidth;
if (SourceX >= 0 && SourceY >= 0 &&
SourceSurf->sizlBitmap.cx > SourceX && SourceSurf->sizlBitmap.cy > SourceY)
{
Source = DIB_GetSourceIndex(SourceSurf, SourceX, SourceY);
if(Source != iTransColor)
{
*((BYTE*)DestBits) = (BYTE)(XLATEOBJ_iXlate(ColorTranslation, Source) & 0xFF);
}
}
DestBits = (PULONG)((ULONG_PTR)DestBits + 1);
}
}
}
return TRUE;
}
typedef union {
ULONG ul;
struct {
UCHAR red;
UCHAR green;
UCHAR blue;
UCHAR alpha;
} col;
} NICEPIXEL32;
typedef union {
USHORT us;
struct {
USHORT red:5,
green:6,
blue:5;
} col;
} NICEPIXEL16;
static __inline UCHAR
Clamp8(ULONG val)
{
return (val > 255) ? 255 : val;
}
BOOLEAN
DIB_8BPP_AlphaBlend(SURFOBJ* Dest, SURFOBJ* Source, RECTL* DestRect,
RECTL* SourceRect, CLIPOBJ* ClipRegion,
XLATEOBJ* ColorTranslation, BLENDOBJ* BlendObj)
{
INT Rows, Cols, SrcX, SrcY;
register PUCHAR Dst;
ULONG DstDelta;
BLENDFUNCTION BlendFunc;
register NICEPIXEL32 DstPixel32;
register NICEPIXEL32 SrcPixel32;
register NICEPIXEL16 SrcPixel16;
UCHAR Alpha, SrcBpp;
EXLATEOBJ exloDst2Src;
EXLATEOBJ* pexlo;
DPRINT("DIB_8BPP_AlphaBlend: srcRect: (%d,%d)-(%d,%d), dstRect: (%d,%d)-(%d,%d)\n",
SourceRect->left, SourceRect->top, SourceRect->right, SourceRect->bottom,
DestRect->left, DestRect->top, DestRect->right, DestRect->bottom);
ASSERT(DestRect->bottom - DestRect->top == SourceRect->bottom - SourceRect->top &&
DestRect->right - DestRect->left == SourceRect->right - SourceRect->left);
BlendFunc = BlendObj->BlendFunction;
if (BlendFunc.BlendOp != AC_SRC_OVER)
{
DPRINT1("BlendOp != AC_SRC_OVER\n");
return FALSE;
}
if (BlendFunc.BlendFlags != 0)
{
DPRINT1("BlendFlags != 0\n");
return FALSE;
}
if ((BlendFunc.AlphaFormat & ~AC_SRC_ALPHA) != 0)
{
DPRINT1("Unsupported AlphaFormat (0x%x)\n", BlendFunc.AlphaFormat);
return FALSE;
}
if ((BlendFunc.AlphaFormat & AC_SRC_ALPHA) != 0 &&
BitsPerFormat(Source->iBitmapFormat) != 32)
{
DPRINT1("Source bitmap must be 32bpp when AC_SRC_ALPHA is set\n");
return FALSE;
}
if (!ColorTranslation)
{
DPRINT1("ColorTranslation must not be NULL!\n");
return FALSE;
}
pexlo = CONTAINING_RECORD(ColorTranslation, EXLATEOBJ, xlo);
EXLATEOBJ_vInitialize(&exloDst2Src, pexlo->ppalDst, pexlo->ppalSrc, 0, 0, 0);
Dst = (PUCHAR)((ULONG_PTR)Dest->pvScan0 + (DestRect->top * Dest->lDelta) +
DestRect->left);
DstDelta = Dest->lDelta - (DestRect->right - DestRect->left);
SrcBpp = BitsPerFormat(Source->iBitmapFormat);
Rows = DestRect->bottom - DestRect->top;
SrcY = SourceRect->top;
while (--Rows >= 0)
{
Cols = DestRect->right - DestRect->left;
SrcX = SourceRect->left;
while (--Cols >= 0)
{
if (SrcBpp <= 16)
{
SrcPixel16.us = DIB_GetSource(Source, SrcX++, SrcY, ColorTranslation);
SrcPixel32.col.red = (SrcPixel16.col.red << 3) | (SrcPixel16.col.red >> 2);
SrcPixel32.col.green = (SrcPixel16.col.green << 2) | (SrcPixel16.col.green >> 4);
SrcPixel32.col.blue = (SrcPixel16.col.blue << 3) | (SrcPixel16.col.blue >> 2);
}
else
{
SrcPixel32.ul = DIB_GetSourceIndex(Source, SrcX++, SrcY);
}
SrcPixel32.col.red = SrcPixel32.col.red * BlendFunc.SourceConstantAlpha / 255;
SrcPixel32.col.green = SrcPixel32.col.green * BlendFunc.SourceConstantAlpha / 255;
SrcPixel32.col.blue = SrcPixel32.col.blue * BlendFunc.SourceConstantAlpha / 255;
SrcPixel32.col.alpha = (SrcBpp == 32) ? (SrcPixel32.col.alpha * BlendFunc.SourceConstantAlpha / 255) : BlendFunc.SourceConstantAlpha;
Alpha = ((BlendFunc.AlphaFormat & AC_SRC_ALPHA) != 0) ?
SrcPixel32.col.alpha : BlendFunc.SourceConstantAlpha;
DstPixel32.ul = XLATEOBJ_iXlate(&exloDst2Src.xlo, *Dst);
SrcPixel32.col.red = Clamp8(DstPixel32.col.red * (255 - Alpha) / 255 + SrcPixel32.col.red);
SrcPixel32.col.green = Clamp8(DstPixel32.col.green * (255 - Alpha) / 255 + SrcPixel32.col.green);
SrcPixel32.col.blue = Clamp8(DstPixel32.col.blue * (255 - Alpha) / 255 + SrcPixel32.col.blue);
*Dst++ = XLATEOBJ_iXlate(ColorTranslation, SrcPixel32.ul);
}
Dst = (PUCHAR)((ULONG_PTR)Dst + DstDelta);
SrcY++;
}
EXLATEOBJ_vCleanup(&exloDst2Src);
return TRUE;
}
/* EOF */