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Ian Ward 

Dan Langlois
Speed up conversion between XImages and DIBSections.
This commit is contained in:
Karl Lessard 1999-09-03 16:49:17 +00:00 committed by Alexandre Julliard
parent 25eeb8f880
commit 41875795cc
3 changed files with 1372 additions and 792 deletions
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1951
graphics/x11drv/dib.c
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File diff suppressed because it is too large Load Diff

17
include/x11drv.h
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@ -19,6 +19,8 @@
#include "winbase.h"
#include "windef.h"
#include <X11/extensions/XShm.h>
struct tagBITMAPOBJ;
struct tagCLASS;
struct tagCREATESTRUCTA;
@ -210,6 +212,10 @@ typedef struct
/* Selector for 16-bit access to bits */
WORD selector;
/* Shared memory segment info */
XShmSegmentInfo shminfo;
} X11DRV_DIBSECTION;
/* This structure holds the arguments for DIB_SetImageBits() */
@ -233,10 +239,15 @@ typedef struct
int yDest;
int width;
int height;
} X11DRV_DIB_SETIMAGEBITS_DESCR;
DWORD rMask;
DWORD gMask;
DWORD bMask;
BOOL useShm;
extern int X11DRV_DIB_GetImageBits( const X11DRV_DIB_SETIMAGEBITS_DESCR *descr );
extern int X11DRV_DIB_SetImageBits( const X11DRV_DIB_SETIMAGEBITS_DESCR *descr );
} X11DRV_DIB_IMAGEBITS_DESCR;
extern int X11DRV_DIB_GetImageBits( const X11DRV_DIB_IMAGEBITS_DESCR *descr );
extern int X11DRV_DIB_SetImageBits( const X11DRV_DIB_IMAGEBITS_DESCR *descr );
extern int *X11DRV_DIB_BuildColorMap( struct tagDC *dc, WORD coloruse,
WORD depth, const BITMAPINFO *info,
int *nColors );

196
objects/dib.c
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@ -535,7 +535,201 @@ INT WINAPI GetDIBits(
if (bits)
{
if(!BITMAP_Driver->pGetDIBits(bmp, dc, startscan, lines, bits, info, coloruse, hbitmap))
/* If the bitmap object already have a dib section that contains image data, get the bits from it*/
if(bmp->dib->dsBm.bmBits && bmp->dib->dsBm.bmBitsPixel >= 16 && info->bmiHeader.biBitCount >= 16)
{
/*FIXME: Only RGB dibs supported for now */
int srcwidth = bmp->dib->dsBm.bmWidth, srcwidthb = bmp->dib->dsBm.bmWidthBytes;
int dstwidthb = DIB_GetDIBWidthBytes( info->bmiHeader.biWidth, info->bmiHeader.biBitCount );
LPVOID dbits = bits, sbits = bmp->dib->dsBm.bmBits + (startscan * srcwidthb);
int x, y;
if ((info->bmiHeader.biHeight < 0) ^ (bmp->dib->dsBmih.biHeight < 0))
{
dbits = bits + (dstwidthb * lines);
dstwidthb = -dstwidthb;
}
switch( info->bmiHeader.biBitCount ) {
case 16: /* 16 bpp dstDIB */
{
LPWORD dstbits = (LPWORD)dbits;
WORD rmask = 0x7c00, gmask= 0x03e0, bmask = 0x001f;
/* FIXME: BI_BITFIELDS not supported yet */
switch(bmp->dib->dsBm.bmBitsPixel) {
case 16: /* 16 bpp srcDIB -> 16 bpp dstDIB */
{
/* FIXME: BI_BITFIELDS not supported yet */
for (y = 0; y < lines; y++, dbits+=dstwidthb, sbits+=srcwidthb)
memcpy(dbits, sbits, srcwidthb);
}
break;
case 24: /* 24 bpp srcDIB -> 16 bpp dstDIB */
{
LPBYTE srcbits = (LPBYTE)sbits;
for( y = 0; y < lines; y++) {
for( x = 0; x < srcwidth; x++ )
*dstbits++ = ((*srcbits++ >> 3) & bmask) |
(((WORD)*srcbits++ << 2) & gmask) |
(((WORD)*srcbits++ << 7) & rmask);
dstbits = (LPWORD)(dbits+=dstwidthb);
srcbits = (LPBYTE)(sbits += srcwidthb);
}
}
break;
case 32: /* 32 bpp srcDIB -> 16 bpp dstDIB */
{
LPDWORD srcbits = (LPDWORD)sbits;
DWORD val;
for( y = 0; y < lines; y++) {
for( x = 0; x < srcwidth; x++ ) {
val = *srcbits++;
*dstbits++ = (WORD)(((val >> 19) & bmask) | ((val >> 6) & gmask) |
((val << 7) & rmask));
}
dstbits=(LPWORD)(dbits+=dstwidthb);
srcbits = (LPDWORD)(sbits += srcwidthb);
}
}
break;
default: /* ? bit bmp -> 16 bit DIB */
FIXME("15/16 bit DIB %d bit bitmap\n",
bmp->bitmap.bmBitsPixel);
break;
}
}
break;
case 24: /* 24 bpp dstDIB */
{
LPBYTE dstbits = (LPBYTE)dbits;
switch(bmp->dib->dsBm.bmBitsPixel) {
case 16: /* 16 bpp srcDIB -> 24 bpp dstDIB */
{
LPWORD srcbits = (LPWORD)sbits;
WORD val;
/* FIXME: BI_BITFIELDS not supported yet */
for( y = 0; y < lines; y++) {
for( x = 0; x < srcwidth; x++ ) {
val = *srcbits++;
*dstbits++ = (BYTE)(((val >> 7) & 0xf8) | ((val >> 12) & 0x07));
*dstbits++ = (BYTE)(((val >> 2) & 0xf8) | ((val >> 7) & 0x07));
*dstbits++ = (BYTE)(((val << 3) & 0xf8) | ((val >> 2) & 0x07));
}
dstbits=(LPBYTE)(dbits+=dstwidthb);
srcbits = (LPWORD)(sbits+=srcwidthb);
}
}
break;
case 24: /* 24 bpp srcDIB -> 24 bpp dstDIB */
{
for (y = 0; y < lines; y++, dbits+=dstwidthb, sbits+=srcwidthb)
memcpy(dbits, sbits, srcwidthb);
}
break;
case 32: /* 32 bpp srcDIB -> 24 bpp dstDIB */
{
LPBYTE srcbits = (LPBYTE)sbits;
for( y = 0; y < lines; y++) {
for( x = 0; x < srcwidth; x++, srcbits++ ) {
*dstbits++ = *srcbits++;
*dstbits++ = *srcbits++;
*dstbits++ = *srcbits++;
}
dstbits=(LPBYTE)(dbits+=dstwidthb);
srcbits = (LPBYTE)(sbits+=srcwidthb);
}
}
break;
default: /* ? bit bmp -> 24 bit DIB */
FIXME("24 bit DIB %d bit bitmap\n",
bmp->bitmap.bmBitsPixel);
break;
}
}
break;
case 32: /* 32 bpp dstDIB */
{
LPDWORD dstbits = (LPDWORD)dbits;
DWORD rmask = 0xff, gmask = 0xff00, bmask = 0xff0000;
/* FIXME: BI_BITFIELDS not supported yet */
switch(bmp->dib->dsBm.bmBitsPixel) {
case 16: /* 16 bpp srcDIB -> 32 bpp dstDIB */
{
LPWORD srcbits = (LPWORD)sbits;
DWORD val;
/* FIXME: BI_BITFIELDS not supported yet */
for( y = 0; y < lines; y++) {
for( x = 0; x < srcwidth; x++ ) {
val = (DWORD)*srcbits++;
*dstbits++ = ((val >> 7) & 0xf8) | ((val >> 12) & 0x07) |
((val << 6) & 0xf800) | ((val << 1) & 0x0700) |
((val << 19) & 0xf800) | ((val << 14) & 0x070000);
}
dstbits=(dbits+=dstwidthb);
srcbits=(sbits+=srcwidthb);
}
}
break;
case 24: /* 24 bpp srcDIB -> 32 bpp dstDIB */
{
LPBYTE srcbits = (LPBYTE)sbits;
for( y = 0; y < lines; y++) {
for( x = 0; x < srcwidth; x++ )
*dstbits++ = ((DWORD)*srcbits++ & rmask) |
(((DWORD)*srcbits++ << 8) & gmask) |
(((DWORD)*srcbits++ << 7) & bmask);
dstbits=(dbits+=dstwidthb);
srcbits=(sbits+=srcwidthb);
}
}
break;
case 32: /* 32 bpp srcDIB -> 16 bpp dstDIB */
{
/* FIXME: BI_BITFIELDS not supported yet */
for (y = 0; y < lines; y++, dbits+=dstwidthb, sbits+=srcwidthb)
memcpy(dbits, sbits, srcwidthb);
}
break;
default: /* ? bit bmp -> 16 bit DIB */
FIXME("15/16 bit DIB %d bit bitmap\n",
bmp->bitmap.bmBitsPixel);
break;
}
}
break;
default: /* ? bit DIB */
FIXME("Unsupported DIB depth %d\n", info->bmiHeader.biBitCount);
break;
}
}
/* Otherwise, get bits from the XImage */
else if(!BITMAP_Driver->pGetDIBits(bmp, dc, startscan, lines, bits, info, coloruse, hbitmap))
{
GDI_HEAP_UNLOCK( hdc );
GDI_HEAP_UNLOCK( hbitmap );