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507 lines
15 KiB
C
507 lines
15 KiB
C
/*
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* ReactOS W32 Subsystem
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* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 ReactOS Team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/* $Id: dib8bpp.c,v 1.14 2004/02/21 09:06:25 navaraf Exp $ */
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#undef WIN32_LEAN_AND_MEAN
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#include <windows.h>
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#include <stdlib.h>
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#include <win32k/bitmaps.h>
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#include <win32k/debug.h>
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#include <debug.h>
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#include <ddk/winddi.h>
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#include "../eng/objects.h"
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#include "dib.h"
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VOID
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DIB_8BPP_PutPixel(PSURFOBJ SurfObj, LONG x, LONG y, ULONG c)
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{
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PBYTE byteaddr = SurfObj->pvScan0 + y * SurfObj->lDelta + x;
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*byteaddr = c;
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}
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ULONG
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DIB_8BPP_GetPixel(PSURFOBJ SurfObj, LONG x, LONG y)
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{
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PBYTE byteaddr = SurfObj->pvScan0 + y * SurfObj->lDelta + x;
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return (ULONG)(*byteaddr);
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}
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VOID
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DIB_8BPP_HLine(PSURFOBJ SurfObj, LONG x1, LONG x2, LONG y, ULONG c)
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{
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PBYTE byteaddr = SurfObj->pvScan0 + y * SurfObj->lDelta;
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PBYTE addr = byteaddr + x1;
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LONG cx = x1;
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while(cx < x2) {
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*addr = c;
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++addr;
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++cx;
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}
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}
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VOID
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DIB_8BPP_VLine(PSURFOBJ SurfObj, LONG x, LONG y1, LONG y2, ULONG c)
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{
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PBYTE byteaddr = SurfObj->pvScan0 + y1 * SurfObj->lDelta;
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PBYTE addr = byteaddr + x;
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LONG lDelta = SurfObj->lDelta;
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byteaddr = addr;
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while(y1++ < y2) {
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*addr = c;
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addr += lDelta;
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}
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}
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BOOLEAN
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DIB_8BPP_BitBltSrcCopy(SURFOBJ *DestSurf, SURFOBJ *SourceSurf,
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SURFGDI *DestGDI, SURFGDI *SourceGDI,
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PRECTL DestRect, POINTL *SourcePoint,
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XLATEOBJ *ColorTranslation)
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{
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LONG i, j, sx, sy, xColor, f1;
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PBYTE SourceBits, DestBits, SourceLine, DestLine;
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PBYTE SourceBits_4BPP, SourceLine_4BPP;
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DestBits = DestSurf->pvScan0 + (DestRect->top * DestSurf->lDelta) + DestRect->left;
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switch(SourceGDI->BitsPerPixel)
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{
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case 1:
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sx = SourcePoint->x;
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sy = SourcePoint->y;
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for (j=DestRect->top; j<DestRect->bottom; j++)
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{
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sx = SourcePoint->x;
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for (i=DestRect->left; i<DestRect->right; i++)
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{
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if(DIB_1BPP_GetPixel(SourceSurf, sx, sy) == 0)
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{
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DIB_8BPP_PutPixel(DestSurf, i, j, XLATEOBJ_iXlate(ColorTranslation, 0));
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} else {
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DIB_8BPP_PutPixel(DestSurf, i, j, XLATEOBJ_iXlate(ColorTranslation, 1));
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}
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sx++;
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}
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sy++;
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}
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break;
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case 4:
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SourceBits_4BPP = SourceSurf->pvScan0 + (SourcePoint->y * SourceSurf->lDelta) + (SourcePoint->x >> 1);
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for (j=DestRect->top; j<DestRect->bottom; j++)
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{
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SourceLine_4BPP = SourceBits_4BPP;
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sx = SourcePoint->x;
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f1 = sx & 1;
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for (i=DestRect->left; i<DestRect->right; i++)
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{
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xColor = XLATEOBJ_iXlate(ColorTranslation,
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(*SourceLine_4BPP & altnotmask[sx&1]) >> (4 * (1-(sx & 1))));
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DIB_8BPP_PutPixel(DestSurf, i, j, xColor);
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if(f1 == 1) { SourceLine_4BPP++; f1 = 0; } else { f1 = 1; }
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sx++;
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}
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SourceBits_4BPP += SourceSurf->lDelta;
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}
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break;
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case 8:
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if (NULL == ColorTranslation || 0 != (ColorTranslation->flXlate & XO_TRIVIAL))
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{
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if (DestRect->top < SourcePoint->y)
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{
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SourceBits = SourceSurf->pvScan0 + (SourcePoint->y * SourceSurf->lDelta) + SourcePoint->x;
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for (j = DestRect->top; j < DestRect->bottom; j++)
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{
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RtlMoveMemory(DestBits, SourceBits, DestRect->right - DestRect->left);
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SourceBits += SourceSurf->lDelta;
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DestBits += DestSurf->lDelta;
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}
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}
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else
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{
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SourceBits = SourceSurf->pvScan0 + ((SourcePoint->y + DestRect->bottom - DestRect->top - 1) * SourceSurf->lDelta) + SourcePoint->x;
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DestBits = DestSurf->pvScan0 + ((DestRect->bottom - 1) * DestSurf->lDelta) + DestRect->left;
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for (j = DestRect->bottom - 1; DestRect->top <= j; j--)
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{
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RtlMoveMemory(DestBits, SourceBits, DestRect->right - DestRect->left);
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SourceBits -= SourceSurf->lDelta;
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DestBits -= DestSurf->lDelta;
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}
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}
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}
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else
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{
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if (DestRect->top < SourcePoint->y)
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{
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SourceLine = SourceSurf->pvScan0 + (SourcePoint->y * SourceSurf->lDelta) + SourcePoint->x;
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DestLine = DestBits;
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for (j = DestRect->top; j < DestRect->bottom; j++)
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{
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SourceBits = SourceLine;
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DestBits = DestLine;
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for (i=DestRect->left; i<DestRect->right; i++)
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{
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*DestBits++ = XLATEOBJ_iXlate(ColorTranslation, *SourceBits++);
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}
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SourceLine += SourceSurf->lDelta;
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DestLine += DestSurf->lDelta;
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}
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}
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else
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{
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SourceLine = SourceSurf->pvScan0 + ((SourcePoint->y + DestRect->bottom - DestRect->top - 1) * SourceSurf->lDelta) + SourcePoint->x;
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DestLine = DestSurf->pvScan0 + ((DestRect->bottom - 1) * DestSurf->lDelta) + DestRect->left;
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for (j = DestRect->bottom - 1; DestRect->top <= j; j--)
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{
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SourceBits = SourceLine;
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DestBits = DestLine;
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for (i=DestRect->left; i<DestRect->right; i++)
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{
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*DestBits++ = XLATEOBJ_iXlate(ColorTranslation, *SourceBits++);
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}
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SourceLine -= SourceSurf->lDelta;
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DestLine -= DestSurf->lDelta;
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}
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}
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}
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break;
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case 16:
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SourceLine = SourceSurf->pvScan0 + (SourcePoint->y * SourceSurf->lDelta) + 2 * SourcePoint->x;
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DestLine = DestBits;
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for (j = DestRect->top; j < DestRect->bottom; j++)
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{
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SourceBits = SourceLine;
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DestBits = DestLine;
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for (i = DestRect->left; i < DestRect->right; i++)
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{
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xColor = *((PWORD) SourceBits);
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*DestBits = XLATEOBJ_iXlate(ColorTranslation, xColor);
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SourceBits += 2;
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DestBits += 1;
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}
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SourceLine += SourceSurf->lDelta;
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DestLine += DestSurf->lDelta;
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}
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break;
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case 24:
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SourceLine = SourceSurf->pvScan0 + (SourcePoint->y * SourceSurf->lDelta) + 3 * SourcePoint->x;
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DestLine = DestBits;
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for (j = DestRect->top; j < DestRect->bottom; j++)
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{
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SourceBits = SourceLine;
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DestBits = DestLine;
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for (i = DestRect->left; i < DestRect->right; i++)
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{
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xColor = (*(SourceBits + 2) << 0x10) +
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(*(SourceBits + 1) << 0x08) +
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(*(SourceBits));
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*DestBits = XLATEOBJ_iXlate(ColorTranslation, xColor);
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SourceBits += 3;
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DestBits += 1;
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}
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SourceLine += SourceSurf->lDelta;
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DestLine += DestSurf->lDelta;
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}
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break;
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case 32:
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SourceLine = SourceSurf->pvScan0 + (SourcePoint->y * SourceSurf->lDelta) + 4 * SourcePoint->x;
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DestLine = DestBits;
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for (j = DestRect->top; j < DestRect->bottom; j++)
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{
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SourceBits = SourceLine;
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DestBits = DestLine;
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for (i = DestRect->left; i < DestRect->right; i++)
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{
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xColor = *((PDWORD) SourceBits);
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*DestBits = XLATEOBJ_iXlate(ColorTranslation, xColor);
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SourceBits += 4;
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DestBits += 1;
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}
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SourceLine += SourceSurf->lDelta;
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DestLine += DestSurf->lDelta;
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}
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break;
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default:
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DbgPrint("DIB_8BPP_Bitblt: Unhandled Source BPP: %u\n", SourceGDI->BitsPerPixel);
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return FALSE;
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}
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return TRUE;
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}
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BOOLEAN
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DIB_8BPP_BitBlt(SURFOBJ *DestSurf, SURFOBJ *SourceSurf,
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SURFGDI *DestGDI, SURFGDI *SourceGDI,
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PRECTL DestRect, POINTL *SourcePoint,
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PBRUSHOBJ Brush, PPOINTL BrushOrigin,
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XLATEOBJ *ColorTranslation, ULONG Rop4)
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{
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LONG i, j, k, sx, sy;
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ULONG Dest, Source, Pattern;
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PULONG DestBits;
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BOOL UsesSource = ((Rop4 & 0xCC0000) >> 2) != (Rop4 & 0x330000);
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BOOL UsesPattern = ((Rop4 & 0xF00000) >> 4) != (Rop4 & 0x0F0000);
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LONG RoundedRight = DestRect->right - ((DestRect->right - DestRect->left) & 0x3);
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if (Rop4 == SRCCOPY)
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{
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return(DIB_8BPP_BitBltSrcCopy(DestSurf, SourceSurf, DestGDI, SourceGDI, DestRect, SourcePoint, ColorTranslation));
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}
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else
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{
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sy = SourcePoint->y;
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for (j=DestRect->top; j<DestRect->bottom; j++)
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{
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sx = SourcePoint->x;
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DestBits = (PULONG)(DestSurf->pvScan0 + DestRect->left + j * DestSurf->lDelta);
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for (i=DestRect->left; i<RoundedRight; i+=4, DestBits++)
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{
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Dest = *DestBits;
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if (UsesSource)
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{
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Source = 0;
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for (k = 0; k < 4; k++)
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{
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Source |= (DIB_GetSource(SourceSurf, SourceGDI, sx + (i - DestRect->left) + k, sy, ColorTranslation) << (k * 8));
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}
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}
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if (UsesPattern)
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{
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/* FIXME: No support for pattern brushes. */
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Pattern = (Brush->iSolidColor & 0xFF) |
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((Brush->iSolidColor & 0xFF) << 8) |
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((Brush->iSolidColor & 0xFF) << 16) |
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((Brush->iSolidColor & 0xFF) << 24);
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}
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*DestBits = DIB_DoRop(Rop4, Dest, Source, Pattern);
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}
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if (i < DestRect->right)
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{
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Dest = *DestBits;
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for (; i < DestRect->right; i++)
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{
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if (UsesSource)
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{
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Source = DIB_GetSource(SourceSurf, SourceGDI, sx + (i - DestRect->left), sy, ColorTranslation);
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}
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if (UsesPattern)
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{
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/* FIXME: No support for pattern brushes. */
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Pattern = (Brush->iSolidColor & 0xFF) |
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((Brush->iSolidColor & 0xFF) << 8) |
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((Brush->iSolidColor & 0xFF) << 16) |
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((Brush->iSolidColor & 0xFF) << 24);
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}
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DIB_8BPP_PutPixel(DestSurf, i, j, DIB_DoRop(Rop4, Dest, Source, Pattern) & 0xFFFF);
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Dest >>= 8;
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}
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}
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sy++;
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}
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}
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return TRUE;
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}
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/*
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=======================================
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Stretching functions goes below
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Some parts of code are based on an
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article "Bresenhame image scaling"
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Dr. Dobb Journal, May 2002
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=======================================
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*/
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typedef unsigned char PIXEL;
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/* 16-bit HiColor (565 format) */
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inline PIXEL average8(PIXEL a, PIXEL b)
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{
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return a; // FIXME: Depend on SetStretchMode
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}
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//NOTE: If you change something here, please do the same in other dibXXbpp.c files!
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void ScaleLineAvg8(PIXEL *Target, PIXEL *Source, int SrcWidth, int TgtWidth)
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{
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int NumPixels = TgtWidth;
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int IntPart = SrcWidth / TgtWidth;
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int FractPart = SrcWidth % TgtWidth;
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int Mid = TgtWidth / 2;
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int E = 0;
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int skip;
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PIXEL p;
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skip = (TgtWidth < SrcWidth) ? 0 : (TgtWidth / (2*SrcWidth) + 1);
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NumPixels -= skip;
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while (NumPixels-- > 0) {
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p = *Source;
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if (E >= Mid)
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p = average8(p, *(Source+1));
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*Target++ = p;
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Source += IntPart;
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E += FractPart;
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if (E >= TgtWidth) {
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E -= TgtWidth;
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Source++;
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} /* if */
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} /* while */
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while (skip-- > 0)
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*Target++ = *Source;
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}
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//NOTE: If you change something here, please do the same in other dibXXbpp.c files!
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void ScaleRectAvg8(PIXEL *Target, PIXEL *Source, int SrcWidth, int SrcHeight,
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int TgtWidth, int TgtHeight, int srcPitch, int dstPitch)
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{
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int NumPixels = TgtHeight;
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int IntPart = ((SrcHeight / TgtHeight) * srcPitch) / 2; //(SrcHeight / TgtHeight) * SrcWidth;
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int FractPart = SrcHeight % TgtHeight;
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int Mid = TgtHeight / 2;
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int E = 0;
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int skip;
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PIXEL *ScanLine, *ScanLineAhead;
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PIXEL *PrevSource = NULL;
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PIXEL *PrevSourceAhead = NULL;
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skip = (TgtHeight < SrcHeight) ? 0 : (TgtHeight / (2*SrcHeight) + 1);
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NumPixels -= skip;
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ScanLine = (PIXEL*)ExAllocatePool(NonPagedPool, TgtWidth*sizeof(PIXEL)); // FIXME: Should we use PagedPool here?
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ScanLineAhead = (PIXEL *)ExAllocatePool(NonPagedPool, TgtWidth*sizeof(PIXEL));
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while (NumPixels-- > 0) {
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if (Source != PrevSource) {
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if (Source == PrevSourceAhead) {
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/* the next scan line has already been scaled and stored in
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* ScanLineAhead; swap the buffers that ScanLine and ScanLineAhead
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* point to
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*/
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PIXEL *tmp = ScanLine;
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ScanLine = ScanLineAhead;
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ScanLineAhead = tmp;
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} else {
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ScaleLineAvg8(ScanLine, Source, SrcWidth, TgtWidth);
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} /* if */
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PrevSource = Source;
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} /* if */
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if (E >= Mid && PrevSourceAhead != (PIXEL *)((BYTE *)Source + srcPitch)) {
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int x;
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ScaleLineAvg8(ScanLineAhead, (PIXEL *)((BYTE *)Source + srcPitch), SrcWidth, TgtWidth);
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for (x = 0; x < TgtWidth; x++)
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ScanLine[x] = average8(ScanLine[x], ScanLineAhead[x]);
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PrevSourceAhead = (PIXEL *)((BYTE *)Source + srcPitch);
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} /* if */
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memcpy(Target, ScanLine, TgtWidth*sizeof(PIXEL));
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Target = (PIXEL *)((BYTE *)Target + dstPitch);
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Source += IntPart;
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E += FractPart;
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if (E >= TgtHeight) {
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E -= TgtHeight;
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Source = (PIXEL *)((BYTE *)Source + srcPitch);
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} /* if */
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} /* while */
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if (skip > 0 && Source != PrevSource)
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ScaleLineAvg8(ScanLine, Source, SrcWidth, TgtWidth);
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while (skip-- > 0) {
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memcpy(Target, ScanLine, TgtWidth*sizeof(PIXEL));
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Target = (PIXEL *)((BYTE *)Target + dstPitch);
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} /* while */
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ExFreePool(ScanLine);
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ExFreePool(ScanLineAhead);
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}
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BOOLEAN DIB_8BPP_StretchBlt(SURFOBJ *DestSurf, SURFOBJ *SourceSurf,
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SURFGDI *DestGDI, SURFGDI *SourceGDI,
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RECTL* DestRect, RECTL *SourceRect,
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POINTL* MaskOrigin, POINTL* BrushOrigin,
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XLATEOBJ *ColorTranslation, ULONG Mode)
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{
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BYTE *SourceLine, *DestLine;
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DbgPrint("DIB_8BPP_StretchBlt: Source BPP: %u, srcRect: (%d,%d)-(%d,%d), dstRect: (%d,%d)-(%d,%d)\n",
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SourceGDI->BitsPerPixel, SourceRect->left, SourceRect->top, SourceRect->right, SourceRect->bottom,
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DestRect->left, DestRect->top, DestRect->right, DestRect->bottom);
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switch(SourceGDI->BitsPerPixel)
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{
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case 1:
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return FALSE;
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break;
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case 4:
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return FALSE;
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break;
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case 8:
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SourceLine = SourceSurf->pvScan0 + (SourceRect->top * SourceSurf->lDelta) + SourceRect->left;
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DestLine = DestSurf->pvScan0 + (DestRect->top * DestSurf->lDelta) + DestRect->left;
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ScaleRectAvg8((PIXEL *)DestLine, (PIXEL *)SourceLine,
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SourceRect->right-SourceRect->left, SourceRect->bottom-SourceRect->top,
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DestRect->right-DestRect->left, DestRect->bottom-DestRect->top, SourceSurf->lDelta, DestSurf->lDelta);
|
|
break;
|
|
|
|
case 16:
|
|
return FALSE;
|
|
break;
|
|
|
|
case 24:
|
|
return FALSE;
|
|
break;
|
|
|
|
case 32:
|
|
return FALSE;
|
|
break;
|
|
|
|
default:
|
|
DbgPrint("DIB_8BPP_StretchBlt: Unhandled Source BPP: %u\n", SourceGDI->BitsPerPixel);
|
|
return FALSE;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* EOF */
|