📄 dib16bpp.c
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/*
* ReactOS W32 Subsystem
* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 ReactOS Team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <w32k.h>
#define NDEBUG
#include <debug.h>
VOID
DIB_16BPP_PutPixel(SURFOBJ *SurfObj, LONG x, LONG y, ULONG c)
{
PBYTE byteaddr = (PBYTE)SurfObj->pvScan0 + y * SurfObj->lDelta;
PWORD addr = (PWORD)byteaddr + x;
*addr = (WORD)c;
}
ULONG
DIB_16BPP_GetPixel(SURFOBJ *SurfObj, LONG x, LONG y)
{
PBYTE byteaddr = (PBYTE)SurfObj->pvScan0 + y * SurfObj->lDelta;
PWORD addr = (PWORD)byteaddr + x;
return (ULONG)(*addr);
}
VOID
DIB_16BPP_HLine(SURFOBJ *SurfObj, LONG x1, LONG x2, LONG y, ULONG c)
{
PDWORD addr = (PDWORD)((PWORD)((PBYTE)SurfObj->pvScan0 + y * SurfObj->lDelta) + x1);
#if defined(_M_IX86) && !defined(_MSC_VER)
/* This is about 10% faster than the generic C code below */
LONG Count = x2 - x1;
__asm__ __volatile__ (
" cld\n"
" mov %0, %%eax\n"
" shl $16, %%eax\n"
" andl $0xffff, %0\n" /* If the pixel value is "abcd", put "abcdabcd" in %eax */
" or %0, %%eax\n"
" mov %2, %%edi\n"
" test $0x03, %%edi\n" /* Align to fullword boundary */
" jz 0f\n"
" stosw\n"
" dec %1\n"
" jz 1f\n"
"0:\n"
" mov %1,%%ecx\n" /* Setup count of fullwords to fill */
" shr $1,%%ecx\n"
" rep stosl\n" /* The actual fill */
" test $0x01, %1\n" /* One left to do at the right side? */
" jz 1f\n"
" stosw\n"
"1:\n"
: /* no output */
: "r"(c), "r"(Count), "m"(addr)
: "%eax", "%ecx", "%edi");
#else /* _M_IX86 */
LONG cx = x1;
DWORD cc;
if (0 != (cx & 0x01))
{
*((PWORD) addr) = c;
cx++;
addr = (PDWORD)((PWORD)(addr) + 1);
}
cc = ((c & 0xffff) << 16) | (c & 0xffff);
while(cx + 1 < x2)
{
*addr++ = cc;
cx += 2;
}
if (cx < x2)
{
*((PWORD) addr) = c;
}
#endif /* _M_IX86 */
}
VOID
DIB_16BPP_VLine(SURFOBJ *SurfObj, LONG x, LONG y1, LONG y2, ULONG c)
{
#if defined(_M_IX86) && !defined(_MSC_VER)
asm volatile(
" testl %2, %2" "\n\t"
" jle 2f" "\n\t"
" movl %2, %%ecx" "\n\t"
" shrl $2, %2" "\n\t"
" andl $3, %%ecx" "\n\t"
" jz 1f" "\n\t"
"0:" "\n\t"
" movw %%ax, (%0)" "\n\t"
" addl %1, %0" "\n\t"
" decl %%ecx" "\n\t"
" jnz 0b" "\n\t"
" testl %2, %2" "\n\t"
" jz 2f" "\n\t"
"1:" "\n\t"
" movw %%ax, (%0)" "\n\t"
" addl %1, %0" "\n\t"
" movw %%ax, (%0)" "\n\t"
" addl %1, %0" "\n\t"
" movw %%ax, (%0)" "\n\t"
" addl %1, %0" "\n\t"
" movw %%ax, (%0)" "\n\t"
" addl %1, %0" "\n\t"
" decl %2" "\n\t"
" jnz 1b" "\n\t"
"2:" "\n\t"
: /* no output */
: "r"((PBYTE)SurfObj->pvScan0 + (y1 * SurfObj->lDelta) + (x * sizeof (WORD))),
"r"(SurfObj->lDelta), "r"(y2 - y1), "a"(c)
: "cc", "memory", "%ecx");
#else
PBYTE byteaddr = (ULONG_PTR)SurfObj->pvScan0 + y1 * SurfObj->lDelta;
PWORD addr = (PWORD)byteaddr + x;
LONG lDelta = SurfObj->lDelta;
byteaddr = (PBYTE)addr;
while(y1++ < y2)
{
*addr = (WORD)c;
byteaddr += lDelta;
addr = (PWORD)byteaddr;
}
#endif
}
BOOLEAN
DIB_16BPP_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) + 2 * 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_16BPP_PutPixel(BltInfo->DestSurface, i, j,
XLATEOBJ_iXlate(BltInfo->XlateSourceToDest, 0));
}
else
{
DIB_16BPP_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_16BPP_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:
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++)
{
*((WORD *)DestBits) = (WORD)XLATEOBJ_iXlate(
BltInfo->XlateSourceToDest, *SourceBits);
SourceBits += 1;
DestBits += 2;
}
SourceLine += BltInfo->SourceSurface->lDelta;
DestLine += BltInfo->DestSurface->lDelta;
}
break;
case BMF_16BPP:
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) + 2 *
BltInfo->SourcePoint.x;
for (j = BltInfo->DestRect.top; j < BltInfo->DestRect.bottom; j++)
{
RtlMoveMemory(DestBits, SourceBits,
2 * (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) + 2 *
BltInfo->SourcePoint.x;
DestBits = (PBYTE)BltInfo->DestSurface->pvScan0 +
((BltInfo->DestRect.bottom - 1) *
BltInfo->DestSurface->lDelta) + 2 *
BltInfo->DestRect.left;
for (j = BltInfo->DestRect.bottom - 1;
BltInfo->DestRect.top <= j; j--)
{
RtlMoveMemory(DestBits, SourceBits, 2 *
(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) + 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++)
{
*((WORD *)DestBits) = (WORD)XLATEOBJ_iXlate(
BltInfo->XlateSourceToDest,
*((WORD *)SourceBits));
SourceBits += 2;
DestBits += 2;
}
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) + 2 *
BltInfo->SourcePoint.x;
DestLine = (PBYTE)BltInfo->DestSurface->pvScan0 +
((BltInfo->DestRect.bottom - 1) *
BltInfo->DestSurface->lDelta) + 2 *
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++)
{
*((WORD *)DestBits) = (WORD)XLATEOBJ_iXlate(
BltInfo->XlateSourceToDest,
*((WORD *)SourceBits));
SourceBits += 2;
DestBits += 2;
}
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));
*((WORD *)DestBits) = (WORD)XLATEOBJ_iXlate(
BltInfo->XlateSourceToDest, xColor);
SourceBits += 3;
DestBits += 2;
}
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++)
{
*((WORD *)DestBits) = (WORD)XLATEOBJ_iXlate(
BltInfo->XlateSourceToDest,
*((PDWORD) SourceBits));
SourceBits += 4;
DestBits += 2;
}
SourceLine += BltInfo->SourceSurface->lDelta;
DestLine += BltInfo->DestSurface->lDelta;
}
break;
default:
DPRINT1("DIB_16BPP_Bitblt: Unhandled Source BPP: %u\n",
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