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reactos/win32ss/gdi/dib/dib1bpp.c

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/*
* PROJECT: Win32 subsystem
* LICENSE: See COPYING in the top level directory
* FILE: win32ss/gdi/dib/dib1bpp.c
* PURPOSE: Device Independant Bitmap functions, 1bpp
* PROGRAMMERS: Jason Filby
*/
#include <win32k.h>
#define NDEBUG
#include <debug.h>
VOID
DIB_1BPP_PutPixel(SURFOBJ *SurfObj, LONG x, LONG y, ULONG c)
{
PBYTE addr = (PBYTE)SurfObj->pvScan0 + y * SurfObj->lDelta + (x >> 3);
if (0 == (c & 0x01))
*addr &= ~MASK1BPP(x);
else
*addr |= MASK1BPP(x);
}
ULONG
DIB_1BPP_GetPixel(SURFOBJ *SurfObj, LONG x, LONG y)
{
PBYTE addr = (PBYTE)SurfObj->pvScan0 + y * SurfObj->lDelta + (x >> 3);
return (*addr & MASK1BPP(x) ? 1 : 0);
}
VOID
DIB_1BPP_HLine(SURFOBJ *SurfObj, LONG x1, LONG x2, LONG y, ULONG c)
{
while(x1 < x2)
{
DIB_1BPP_PutPixel(SurfObj, x1, y, c);
x1++;
}
}
VOID
DIB_1BPP_VLine(SURFOBJ *SurfObj, LONG x, LONG y1, LONG y2, ULONG c)
{
while(y1 < y2)
{
DIB_1BPP_PutPixel(SurfObj, x, y1, c);
y1++;
}
}
static
void
DIB_1BPP_BitBltSrcCopy_From1BPP (
SURFOBJ* DestSurf,
SURFOBJ* SourceSurf,
XLATEOBJ* pxlo,
PRECTL DestRect,
POINTL *SourcePoint )
{
// The 'window' in this sense is the x-position that corresponds
// to the left-edge of the 8-pixel byte we are currently working with.
// dwx is current x-window, dwx2 is the 'last' window we need to process.
int dwx, dwx2; // Destination window x-position
int swx; // Source window y-position
// Left and right edges of source and dest rectangles
int dl = DestRect->left; // dest left
int dr = DestRect->right-1; // dest right (inclusive)
int sl = SourcePoint->x; // source left
int sr = sl + dr - dl; // source right (inclusive)
// Which direction are we going?
int xinc;
int yinc;
int ySrcDelta, yDstDelta;
// The following 4 variables are used for the y-sweep
int dy; // dest y
int dy1; // dest y start
int dy2; // dest y end
int sy1; // src y start
int shift;
BYTE srcmask, dstmask, xormask;
// 'd' and 's' are the dest & src buffer pointers that I use on my x-sweep
// 'pd' and 'ps' are the dest & src buffer pointers used on the inner y-sweep
PBYTE d, pd; // dest ptrs
PBYTE s, ps; // src ptrs
shift = (dl-sl)&7;
xormask = 0xFF * (BYTE)XLATEOBJ_iXlate(pxlo, 0);
if ( DestRect->top <= SourcePoint->y )
{
// Moving up (scan top -> bottom)
dy1 = DestRect->top;
dy2 = DestRect->bottom - 1;
sy1 = SourcePoint->y;
yinc = 1;
ySrcDelta = SourceSurf->lDelta;
yDstDelta = DestSurf->lDelta;
}
else
{
// Moving down (scan bottom -> top)
dy1 = DestRect->bottom - 1;
dy2 = DestRect->top;
sy1 = SourcePoint->y + dy1 - dy2;
yinc = -1;
ySrcDelta = -SourceSurf->lDelta;
yDstDelta = -DestSurf->lDelta;
}
if ( DestRect->left <= SourcePoint->x )
{
// Moving left (scan left->right)
dwx = dl&~7;
swx = (sl-(dl&7))&~7;
dwx2 = dr&~7;
xinc = 1;
}
else
{
// Moving right (scan right->left)
dwx = dr & ~7;
swx = (sr - (dr & 7)) & ~7; // (sr - 7) & ~7; // We need the left edge of this block. Thus the -7
dwx2 = dl & ~7;
xinc = -1;
}
d = &(((PBYTE)DestSurf->pvScan0)[dy1*DestSurf->lDelta + (dwx>>3)]);
s = &(((PBYTE)SourceSurf->pvScan0)[sy1*SourceSurf->lDelta + (swx>>3)]);
for ( ;; )
{
dy = dy1;
pd = d;
ps = s;
srcmask = 0xff;
if ( dwx < dl )
{
int diff = dl-dwx;
srcmask &= (1<<(8-diff))-1;
}
if ( dwx+7 > dr )
{
int diff = dr-dwx+1;
srcmask &= ~((1<<(8-diff))-1);
}
dstmask = ~srcmask;
// We unfortunately *must* have 5 different versions of the inner
// loop to be certain we don't try to read from memory that is not
// needed and may in fact be invalid.
if ( !shift )
{
for ( ;; )
{
*pd = (BYTE)((*pd & dstmask) | ((ps[0]^xormask) & srcmask));
// This *must* be here, because we could be going up *or* down...
if ( dy == dy2 )
break;
dy += yinc;
pd += yDstDelta;
ps += ySrcDelta;
}
}
else if ( !(0xFF00 & (srcmask<<shift) ) ) // Check if ps[0] not needed...
{
for ( ;; )
{
*pd = (BYTE)((*pd & dstmask)
| ( ( (ps[1]^xormask) >> shift ) & srcmask ));
// This *must* be here, because we could be going up *or* down...
if ( dy == dy2 )
break;
dy += yinc;
pd += yDstDelta;
ps += ySrcDelta;
}
}
else if ( !(0xFF & (srcmask<<shift) ) ) // Check if ps[1] not needed...
{
for ( ;; )
{
*pd = (*pd & dstmask)
| ( ( (ps[0]^xormask) << ( 8 - shift ) ) & srcmask );
// This *must* be here, because we could be going up *or* down...
if ( dy == dy2 )
break;
dy += yinc;
pd += yDstDelta;
ps += ySrcDelta;
}
}
else // Both ps[0] and ps[1] are needed
{
for ( ;; )
{
*pd = (*pd & dstmask)
| ( ( ( ((ps[1]^xormask))|((ps[0]^xormask)<<8) ) >> shift ) & srcmask );
// This *must* be here, because we could be going up *or* down...
if ( dy == dy2 )
break;
dy += yinc;
pd += yDstDelta;
ps += ySrcDelta;
}
}
// This *must* be here, because we could be going right *or* left...
if ( dwx == dwx2 )
break;
d += xinc;
s += xinc;
dwx += xinc<<3;
swx += xinc<<3;
}
}
BOOLEAN
DIB_1BPP_BitBltSrcCopy(PBLTINFO BltInfo)
{
ULONG Color;
LONG i, j, sx, sy = BltInfo->SourcePoint.y;
switch ( BltInfo->SourceSurface->iBitmapFormat )
{
case BMF_1BPP:
DIB_1BPP_BitBltSrcCopy_From1BPP ( BltInfo->DestSurface, BltInfo->SourceSurface, BltInfo->XlateSourceToDest, &BltInfo->DestRect, &BltInfo->SourcePoint );
break;
case BMF_4BPP:
for (j=BltInfo->DestRect.top; j<BltInfo->DestRect.bottom; j++)
{
sx = BltInfo->SourcePoint.x;
for (i=BltInfo->DestRect.left; i<BltInfo->DestRect.right; i++)
{
Color = XLATEOBJ_iXlate(BltInfo->XlateSourceToDest, DIB_4BPP_GetPixel(BltInfo->SourceSurface, sx, sy));
DIB_1BPP_PutPixel(BltInfo->DestSurface, i, j, Color);
sx++;
}
sy++;
}
break;
case BMF_8BPP:
for (j=BltInfo->DestRect.top; j<BltInfo->DestRect.bottom; j++)
{
sx = BltInfo->SourcePoint.x;
for (i=BltInfo->DestRect.left; i<BltInfo->DestRect.right; i++)
{
Color = XLATEOBJ_iXlate(BltInfo->XlateSourceToDest, DIB_8BPP_GetPixel(BltInfo->SourceSurface, sx, sy));
DIB_1BPP_PutPixel(BltInfo->DestSurface, i, j, Color);
sx++;
}
sy++;
}
break;
case BMF_16BPP:
for (j=BltInfo->DestRect.top; j<BltInfo->DestRect.bottom; j++)
{
sx = BltInfo->SourcePoint.x;
for (i=BltInfo->DestRect.left; i<BltInfo->DestRect.right; i++)
{
Color = XLATEOBJ_iXlate(BltInfo->XlateSourceToDest, DIB_16BPP_GetPixel(BltInfo->SourceSurface, sx, sy));
DIB_1BPP_PutPixel(BltInfo->DestSurface, i, j, Color);
sx++;
}
sy++;
}
break;
case BMF_24BPP:
for (j=BltInfo->DestRect.top; j<BltInfo->DestRect.bottom; j++)
{
sx = BltInfo->SourcePoint.x;
for (i=BltInfo->DestRect.left; i<BltInfo->DestRect.right; i++)
{
Color = XLATEOBJ_iXlate(BltInfo->XlateSourceToDest, DIB_24BPP_GetPixel(BltInfo->SourceSurface, sx, sy));
DIB_1BPP_PutPixel(BltInfo->DestSurface, i, j, Color);
sx++;
}
sy++;
}
break;
case BMF_32BPP:
for (j=BltInfo->DestRect.top; j<BltInfo->DestRect.bottom; j++)
{
sx = BltInfo->SourcePoint.x;
for (i=BltInfo->DestRect.left; i<BltInfo->DestRect.right; i++)
{
Color = XLATEOBJ_iXlate(BltInfo->XlateSourceToDest, DIB_32BPP_GetPixel(BltInfo->SourceSurface, sx, sy));
DIB_1BPP_PutPixel(BltInfo->DestSurface, i, j, Color);
sx++;
}
sy++;
}
break;
default:
DbgPrint("DIB_1BPP_BitBlt: Unhandled Source BPP: %u\n", BitsPerFormat(BltInfo->SourceSurface->iBitmapFormat));
return FALSE;
}
return TRUE;
}
#ifndef _USE_DIBLIB_
BOOLEAN
DIB_1BPP_BitBlt(PBLTINFO BltInfo)
{
LONG DestX, DestY;
LONG SourceX, SourceY;
LONG PatternY = 0;
ULONG Dest, Source = 0, Pattern = 0;
ULONG Index;
BOOLEAN UsesSource;
BOOLEAN UsesPattern;
PULONG DestBits;
LONG RoundedRight;
UsesSource = ROP4_USES_SOURCE(BltInfo->Rop4);
UsesPattern = ROP4_USES_PATTERN(BltInfo->Rop4);
RoundedRight = BltInfo->DestRect.right -
((BltInfo->DestRect.right - BltInfo->DestRect.left) & 31);
SourceY = BltInfo->SourcePoint.y;
if (UsesPattern)
{
if (BltInfo->PatternSurface)
{
PatternY = (BltInfo->DestRect.top + BltInfo->BrushOrigin.y) %
BltInfo->PatternSurface->sizlBitmap.cy;
}
else
{
/* FIXME: Shouldn't it be expanded? */
if (BltInfo->Brush)
Pattern = BltInfo->Brush->iSolidColor;
}
}
for (DestY = BltInfo->DestRect.top; DestY < BltInfo->DestRect.bottom; DestY++)
{
DestX = BltInfo->DestRect.left;
SourceX = BltInfo->SourcePoint.x;
DestBits = (PULONG)(
(PBYTE)BltInfo->DestSurface->pvScan0 +
(BltInfo->DestRect.left >> 3) +
DestY * BltInfo->DestSurface->lDelta);
if (DestX & 31)
{
#if 0
/* FIXME: This case is completely untested!!! */
Dest = *((PBYTE)DestBits);
NoBits = 31 - (DestX & 31);
if (UsesSource)
{
Source = 0;
/* FIXME: This is incorrect! */
for (Index = 31 - NoBits; Index >= 0; Index++)
Source |= (DIB_GetSource(SourceSurf, SourceX + Index, SourceY, ColorTranslation) << (31 - Index));
}
if (BltInfo->PatternSurface)
{
Pattern = 0;
for (k = 31 - NoBits; k >= 0; k++)
Pattern |= (DIB_GetSourceIndex(PatternObj, (X + BrushOrigin.x + k) % PatternWidth, PatternY) << (31 - k));
}
Dest = DIB_DoRop(BltInfo->Rop4, Dest, Source, Pattern);
Dest &= ~((1 << (31 - NoBits)) - 1);
Dest |= *((PBYTE)DestBits) & ((1 << (31 - NoBits)) - 1);
*DestBits = Dest;
DestX += NoBits;
SourceX += NoBits;
#endif
}
for (; DestX < RoundedRight; DestX += 32, DestBits++, SourceX += 32)
{
Dest = *DestBits;
if (UsesSource)
{
Source = 0;
for (Index = 0; Index < 8; Index++)
{
Source |= DIB_GetSource(BltInfo->SourceSurface, SourceX + Index, SourceY, BltInfo->XlateSourceToDest) << (7 - Index);
Source |= DIB_GetSource(BltInfo->SourceSurface, SourceX + Index + 8, SourceY, BltInfo->XlateSourceToDest) << (8 + (7 - Index));
Source |= DIB_GetSource(BltInfo->SourceSurface, SourceX + Index + 16, SourceY, BltInfo->XlateSourceToDest) << (16 + (7 - Index));
Source |= DIB_GetSource(BltInfo->SourceSurface, SourceX + Index + 24, SourceY, BltInfo->XlateSourceToDest) << (24 + (7 - Index));
}
}
if (BltInfo->PatternSurface)
{
Pattern = 0;
for (Index = 0; Index < 8; Index++)
{
Pattern |= DIB_GetSourceIndex(BltInfo->PatternSurface, (DestX + BltInfo->BrushOrigin.x + Index) % BltInfo->PatternSurface->sizlBitmap.cx, PatternY) << (7 - Index);
Pattern |= DIB_GetSourceIndex(BltInfo->PatternSurface, (DestX + BltInfo->BrushOrigin.x + Index + 8) % BltInfo->PatternSurface->sizlBitmap.cx, PatternY) << (8 + (7 - Index));
Pattern |= DIB_GetSourceIndex(BltInfo->PatternSurface, (DestX + BltInfo->BrushOrigin.x + Index + 16) % BltInfo->PatternSurface->sizlBitmap.cx, PatternY) << (16 + (7 - Index));
Pattern |= DIB_GetSourceIndex(BltInfo->PatternSurface, (DestX + BltInfo->BrushOrigin.x + Index + 24) % BltInfo->PatternSurface->sizlBitmap.cx, PatternY) << (24 + (7 - Index));
}
}
*DestBits = DIB_DoRop(BltInfo->Rop4, Dest, Source, Pattern);
}
if (DestX < BltInfo->DestRect.right)
{
for (; DestX < BltInfo->DestRect.right; DestX++, SourceX++)
{
Dest = DIB_1BPP_GetPixel(BltInfo->DestSurface, DestX, DestY);
if (UsesSource)
{
Source = DIB_GetSource(BltInfo->SourceSurface, SourceX, SourceY, BltInfo->XlateSourceToDest);
}
if (BltInfo->PatternSurface)
{
Pattern = DIB_GetSourceIndex(BltInfo->PatternSurface, (DestX + BltInfo->BrushOrigin.x) % BltInfo->PatternSurface->sizlBitmap.cx, PatternY);
}
DIB_1BPP_PutPixel(BltInfo->DestSurface, DestX, DestY, DIB_DoRop(BltInfo->Rop4, Dest, Source, Pattern) & 0xF);
}
}
SourceY++;
if (BltInfo->PatternSurface)
{
PatternY++;
PatternY %= BltInfo->PatternSurface->sizlBitmap.cy;
}
}
return TRUE;
}
/* BitBlt Optimize */
BOOLEAN
DIB_1BPP_ColorFill(SURFOBJ* DestSurface, RECTL* DestRect, ULONG color)
{
LONG DestY;
for (DestY = DestRect->top; DestY< DestRect->bottom; DestY++)
{
DIB_1BPP_HLine(DestSurface, DestRect->left, DestRect->right, DestY, color);
}
return TRUE;
}
#endif // !_USE_DIBLIB_
BOOLEAN
DIB_1BPP_TransparentBlt(SURFOBJ *DestSurf, SURFOBJ *SourceSurf,
RECTL* DestRect, RECTL *SourceRect,
XLATEOBJ *ColorTranslation, ULONG iTransColor)
{
return FALSE;
}
/* EOF */
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