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xserver-multidpi/fb/fb24_32.c
Keith Packard 9838b7032e Introduce a consistent coding style 
This is strictly the application of the script 'x-indent-all.sh'
from util/modular. Compared to the patch that Daniel posted in
January, I've added a few indent flags:

	-bap
	-psl
	-T PrivatePtr
	-T pmWait
	-T _XFUNCPROTOBEGIN
	-T _XFUNCPROTOEND
	-T _X_EXPORT

The typedefs were needed to make the output of sdksyms.sh match the
previous output, otherwise, the code is formatted badly enough that
sdksyms.sh generates incorrect output.

The generated code was compared with the previous version and found to
be essentially identical -- "assert" line numbers and BUILD_TIME were
the only differences found.

The comparison was done with this script:

dir1=$1
dir2=$2

for dir in $dir1 $dir2; do
	(cd $dir && find . -name '*.o' | while read file; do
		dir=`dirname $file`
		base=`basename $file .o`
		dump=$dir/$base.dump
		objdump -d $file > $dump
	done)
done

find $dir1 -name '*.dump' | while read dump; do
	otherdump=`echo $dump | sed "s;$dir1;$dir2;"`
	diff -u $dump $otherdump
done

Signed-off-by: Keith Packard <keithp@keithp.com>
Acked-by: Daniel Stone <daniel@fooishbar.org>
Acked-by: Alan Coopersmith <alan.coopersmith@oracle.com>
2012-03-21 13:54:42 -07:00

549 lines
16 KiB
C
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/*
* Copyright © 2000 SuSE, Inc.
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of SuSE not be used in advertising or
* publicity pertaining to distribution of the software without specific,
* written prior permission. SuSE makes no representations about the
* suitability of this software for any purpose. It is provided "as is"
* without express or implied warranty.
*
* SuSE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL SuSE
* BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* Author: Keith Packard, SuSE, Inc.
*/
#ifdef HAVE_DIX_CONFIG_H
#include <dix-config.h>
#endif
#include <string.h>
#include "fb.h"
/* X apps don't like 24bpp images, this code exposes 32bpp images */
/*
* These two functions do a full CopyArea while reformatting
* the data between 24 and 32bpp. They try to go a bit faster
* by reading/writing aligned CARD32s where it's easy
*/
#define Get8(a) ((CARD32) READ(a))
#if BITMAP_BIT_ORDER == MSBFirst
#define Get24(a) ((Get8(a) << 16) | (Get8((a)+1) << 8) | Get8((a)+2))
#define Put24(a,p) ((WRITE((a+0), (CARD8) ((p) >> 16))), \
(WRITE((a+1), (CARD8) ((p) >> 8))), \
(WRITE((a+2), (CARD8) (p))))
#else
#define Get24(a) (Get8(a) | (Get8((a)+1) << 8) | (Get8((a)+2)<<16))
#define Put24(a,p) ((WRITE((a+0), (CARD8) (p))), \
(WRITE((a+1), (CARD8) ((p) >> 8))), \
(WRITE((a+2), (CARD8) ((p) >> 16))))
#endif
typedef void (*fb24_32BltFunc) (CARD8 *srcLine,
FbStride srcStride,
int srcX,
CARD8 *dstLine,
FbStride dstStride,
int dstX,
int width, int height, int alu, FbBits pm);
static void
fb24_32BltDown(CARD8 *srcLine,
FbStride srcStride,
int srcX,
CARD8 *dstLine,
FbStride dstStride,
int dstX, int width, int height, int alu, FbBits pm)
{
CARD32 *src;
CARD8 *dst;
int w;
Bool destInvarient;
CARD32 pixel, dpixel;
FbDeclareMergeRop();
srcLine += srcX * 4;
dstLine += dstX * 3;
FbInitializeMergeRop(alu, (pm | ~(FbBits) 0xffffff));
destInvarient = FbDestInvarientMergeRop();
while (height--) {
src = (CARD32 *) srcLine;
dst = dstLine;
srcLine += srcStride;
dstLine += dstStride;
w = width;
if (destInvarient) {
while (((long) dst & 3) && w) {
w--;
pixel = READ(src++);
pixel = FbDoDestInvarientMergeRop(pixel);
Put24(dst, pixel);
dst += 3;
}
/* Do four aligned pixels at a time */
while (w >= 4) {
CARD32 s0, s1;
s0 = READ(src++);
s0 = FbDoDestInvarientMergeRop(s0);
s1 = READ(src++);
s1 = FbDoDestInvarientMergeRop(s1);
#if BITMAP_BIT_ORDER == LSBFirst
WRITE((CARD32 *) dst, (s0 & 0xffffff) | (s1 << 24));
#else
WRITE((CARD32 *) dst, (s0 << 8) | ((s1 & 0xffffff) >> 16));
#endif
s0 = READ(src++);
s0 = FbDoDestInvarientMergeRop(s0);
#if BITMAP_BIT_ORDER == LSBFirst
WRITE((CARD32 *) (dst + 4),
((s1 & 0xffffff) >> 8) | (s0 << 16));
#else
WRITE((CARD32 *) (dst + 4),
(s1 << 16) | ((s0 & 0xffffff) >> 8));
#endif
s1 = READ(src++);
s1 = FbDoDestInvarientMergeRop(s1);
#if BITMAP_BIT_ORDER == LSBFirst
WRITE((CARD32 *) (dst + 8),
((s0 & 0xffffff) >> 16) | (s1 << 8));
#else
WRITE((CARD32 *) (dst + 8), (s0 << 24) | (s1 & 0xffffff));
#endif
dst += 12;
w -= 4;
}
while (w--) {
pixel = READ(src++);
pixel = FbDoDestInvarientMergeRop(pixel);
Put24(dst, pixel);
dst += 3;
}
}
else {
while (w--) {
pixel = READ(src++);
dpixel = Get24(dst);
pixel = FbDoMergeRop(pixel, dpixel);
Put24(dst, pixel);
dst += 3;
}
}
}
}
static void
fb24_32BltUp(CARD8 *srcLine,
FbStride srcStride,
int srcX,
CARD8 *dstLine,
FbStride dstStride,
int dstX, int width, int height, int alu, FbBits pm)
{
CARD8 *src;
CARD32 *dst;
int w;
Bool destInvarient;
CARD32 pixel;
FbDeclareMergeRop();
FbInitializeMergeRop(alu, (pm | (~(FbBits) 0xffffff)));
destInvarient = FbDestInvarientMergeRop();
srcLine += srcX * 3;
dstLine += dstX * 4;
while (height--) {
w = width;
src = srcLine;
dst = (CARD32 *) dstLine;
srcLine += srcStride;
dstLine += dstStride;
if (destInvarient) {
while (((long) src & 3) && w) {
w--;
pixel = Get24(src);
src += 3;
WRITE(dst++, FbDoDestInvarientMergeRop(pixel));
}
/* Do four aligned pixels at a time */
while (w >= 4) {
CARD32 s0, s1;
s0 = READ((CARD32 *) src);
#if BITMAP_BIT_ORDER == LSBFirst
pixel = s0 & 0xffffff;
#else
pixel = s0 >> 8;
#endif
WRITE(dst++, FbDoDestInvarientMergeRop(pixel));
s1 = READ((CARD32 *) (src + 4));
#if BITMAP_BIT_ORDER == LSBFirst
pixel = (s0 >> 24) | ((s1 << 8) & 0xffffff);
#else
pixel = ((s0 << 16) & 0xffffff) | (s1 >> 16);
#endif
WRITE(dst++, FbDoDestInvarientMergeRop(pixel));
s0 = READ((CARD32 *) (src + 8));
#if BITMAP_BIT_ORDER == LSBFirst
pixel = (s1 >> 16) | ((s0 << 16) & 0xffffff);
#else
pixel = ((s1 << 8) & 0xffffff) | (s0 >> 24);
#endif
WRITE(dst++, FbDoDestInvarientMergeRop(pixel));
#if BITMAP_BIT_ORDER == LSBFirst
pixel = s0 >> 8;
#else
pixel = s0 & 0xffffff;
#endif
WRITE(dst++, FbDoDestInvarientMergeRop(pixel));
src += 12;
w -= 4;
}
while (w) {
w--;
pixel = Get24(src);
src += 3;
WRITE(dst++, FbDoDestInvarientMergeRop(pixel));
}
}
else {
while (w--) {
pixel = Get24(src);
src += 3;
WRITE(dst, FbDoMergeRop(pixel, READ(dst)));
dst++;
}
}
}
}
/*
* Spans functions; probably unused.
*/
void
fb24_32GetSpans(DrawablePtr pDrawable,
int wMax,
DDXPointPtr ppt, int *pwidth, int nspans, char *pchardstStart)
{
FbBits *srcBits;
CARD8 *src;
FbStride srcStride;
int srcBpp;
int srcXoff, srcYoff;
CARD8 *dst;
fbGetDrawable(pDrawable, srcBits, srcStride, srcBpp, srcXoff, srcYoff);
src = (CARD8 *) srcBits;
srcStride *= sizeof(FbBits);
while (nspans--) {
dst = (CARD8 *) pchardstStart;
fb24_32BltUp(src + (ppt->y + srcYoff) * srcStride, srcStride,
ppt->x + srcXoff,
dst, 1, 0, *pwidth, 1, GXcopy, FB_ALLONES);
pchardstStart += PixmapBytePad(*pwidth, pDrawable->depth);
ppt++;
pwidth++;
}
fbFinishAccess(pDrawable);
}
void
fb24_32SetSpans(DrawablePtr pDrawable,
GCPtr pGC,
char *src,
DDXPointPtr ppt, int *pwidth, int nspans, int fSorted)
{
FbGCPrivPtr pPriv = fbGetGCPrivate(pGC);
RegionPtr pClip = fbGetCompositeClip(pGC);
FbBits *dstBits;
CARD8 *dst, *d, *s;
FbStride dstStride;
int dstBpp;
int dstXoff, dstYoff;
BoxPtr pbox;
int n;
int x1, x2;
fbGetDrawable(pDrawable, dstBits, dstStride, dstBpp, dstXoff, dstYoff);
dst = (CARD8 *) dstBits;
dstStride *= sizeof(FbBits);
while (nspans--) {
d = dst + (ppt->y + dstYoff) * dstStride;
s = (CARD8 *) src;
n = RegionNumRects(pClip);
pbox = RegionRects(pClip);
while (n--) {
if (pbox->y1 > ppt->y)
break;
if (pbox->y2 > ppt->y) {
x1 = ppt->x;
x2 = x1 + *pwidth;
if (pbox->x1 > x1)
x1 = pbox->x1;
if (pbox->x2 < x2)
x2 = pbox->x2;
if (x1 < x2)
fb24_32BltDown(s,
0,
(x1 - ppt->x),
d,
dstStride,
x1 + dstXoff,
(x2 - x1), 1, pGC->alu, pPriv->pm);
}
}
src += PixmapBytePad(*pwidth, pDrawable->depth);
ppt++;
pwidth++;
}
fbFinishAccess(pDrawable);
}
/*
* Clip and put 32bpp Z-format images to a 24bpp drawable
*/
void
fb24_32PutZImage(DrawablePtr pDrawable,
RegionPtr pClip,
int alu,
FbBits pm,
int x,
int y, int width, int height, CARD8 *src, FbStride srcStride)
{
FbBits *dstBits;
CARD8 *dst;
FbStride dstStride;
int dstBpp;
int dstXoff, dstYoff;
int nbox;
BoxPtr pbox;
int x1, y1, x2, y2;
fbGetDrawable(pDrawable, dstBits, dstStride, dstBpp, dstXoff, dstYoff);
dstStride *= sizeof(FbBits);
dst = (CARD8 *) dstBits;
for (nbox = RegionNumRects(pClip),
pbox = RegionRects(pClip); nbox--; pbox++) {
x1 = x;
y1 = y;
x2 = x + width;
y2 = y + height;
if (x1 < pbox->x1)
x1 = pbox->x1;
if (y1 < pbox->y1)
y1 = pbox->y1;
if (x2 > pbox->x2)
x2 = pbox->x2;
if (y2 > pbox->y2)
y2 = pbox->y2;
if (x1 >= x2 || y1 >= y2)
continue;
fb24_32BltDown(src + (y1 - y) * srcStride,
srcStride,
(x1 - x),
dst + (y1 + dstYoff) * dstStride,
dstStride, x1 + dstXoff, (x2 - x1), (y2 - y1), alu, pm);
}
fbFinishAccess(pDrawable);
}
void
fb24_32GetImage(DrawablePtr pDrawable,
int x,
int y,
int w,
int h, unsigned int format, unsigned long planeMask, char *d)
{
FbBits *srcBits;
CARD8 *src;
FbStride srcStride;
int srcBpp;
int srcXoff, srcYoff;
FbStride dstStride;
FbBits pm;
fbGetDrawable(pDrawable, srcBits, srcStride, srcBpp, srcXoff, srcYoff);
src = (CARD8 *) srcBits;
srcStride *= sizeof(FbBits);
x += pDrawable->x;
y += pDrawable->y;
pm = fbReplicatePixel(planeMask, 32);
dstStride = PixmapBytePad(w, pDrawable->depth);
if (pm != FB_ALLONES)
memset(d, 0, dstStride * h);
fb24_32BltUp(src + (y + srcYoff) * srcStride, srcStride, x + srcXoff,
(CARD8 *) d, dstStride, 0, w, h, GXcopy, pm);
fbFinishAccess(pDrawable);
}
void
fb24_32CopyMtoN(DrawablePtr pSrcDrawable,
DrawablePtr pDstDrawable,
GCPtr pGC,
BoxPtr pbox,
int nbox,
int dx,
int dy,
Bool reverse, Bool upsidedown, Pixel bitplane, void *closure)
{
FbGCPrivPtr pPriv = fbGetGCPrivate(pGC);
FbBits *srcBits;
CARD8 *src;
FbStride srcStride;
int srcBpp;
FbBits *dstBits;
CARD8 *dst;
FbStride dstStride;
int dstBpp;
fb24_32BltFunc blt;
int srcXoff, srcYoff;
int dstXoff, dstYoff;
fbGetDrawable(pSrcDrawable, srcBits, srcStride, srcBpp, srcXoff, srcYoff);
src = (CARD8 *) srcBits;
srcStride *= sizeof(FbBits);
fbGetDrawable(pDstDrawable, dstBits, dstStride, dstBpp, dstXoff, dstYoff);
dst = (CARD8 *) dstBits;
dstStride *= sizeof(FbBits);
if (srcBpp == 24)
blt = fb24_32BltUp;
else
blt = fb24_32BltDown;
while (nbox--) {
(*blt) (src + (pbox->y1 + dy + srcYoff) * srcStride,
srcStride,
(pbox->x1 + dx + srcXoff),
dst + (pbox->y1 + dstYoff) * dstStride,
dstStride,
(pbox->x1 + dstXoff),
(pbox->x2 - pbox->x1),
(pbox->y2 - pbox->y1), pGC->alu, pPriv->pm);
pbox++;
}
fbFinishAccess(pSrcDrawable);
fbFinishAccess(pDstDrawable);
}
PixmapPtr
fb24_32ReformatTile(PixmapPtr pOldTile, int bitsPerPixel)
{
ScreenPtr pScreen = pOldTile->drawable.pScreen;
PixmapPtr pNewTile;
FbBits *old, *new;
FbStride oldStride, newStride;
int oldBpp, newBpp;
fb24_32BltFunc blt;
_X_UNUSED int oldXoff, oldYoff;
_X_UNUSED int newXoff, newYoff;
pNewTile = pScreen->CreatePixmap(pScreen, pOldTile->drawable.width,
pOldTile->drawable.height,
pOldTile->drawable.depth,
pOldTile->usage_hint);
if (!pNewTile)
return 0;
fbGetDrawable(&pOldTile->drawable,
old, oldStride, oldBpp, oldXoff, oldYoff);
fbGetDrawable(&pNewTile->drawable,
new, newStride, newBpp, newXoff, newYoff);
if (oldBpp == 24)
blt = fb24_32BltUp;
else
blt = fb24_32BltDown;
(*blt) ((CARD8 *) old,
oldStride * sizeof(FbBits),
0,
(CARD8 *) new,
newStride * sizeof(FbBits),
0,
pOldTile->drawable.width,
pOldTile->drawable.height, GXcopy, FB_ALLONES);
fbFinishAccess(&pOldTile->drawable);
fbFinishAccess(&pNewTile->drawable);
return pNewTile;
}
typedef struct {
pointer pbits;
int width;
} miScreenInitParmsRec, *miScreenInitParmsPtr;
Bool
fb24_32CreateScreenResources(ScreenPtr pScreen)
{
miScreenInitParmsPtr pScrInitParms;
int pitch;
Bool retval;
/* get the pitch before mi destroys it */
pScrInitParms = (miScreenInitParmsPtr) pScreen->devPrivate;
pitch = BitmapBytePad(pScrInitParms->width * 24);
if ((retval = miCreateScreenResources(pScreen))) {
/* fix the screen pixmap */
PixmapPtr pPix = (PixmapPtr) pScreen->devPrivate;
pPix->drawable.bitsPerPixel = 24;
pPix->devKind = pitch;
}
return retval;
}
Bool
fb24_32ModifyPixmapHeader(PixmapPtr pPixmap,
int width,
int height,
int depth,
int bitsPerPixel, int devKind, pointer pPixData)
{
int bpp, w;
if (!pPixmap)
return FALSE;
bpp = bitsPerPixel;
if (bpp <= 0)
bpp = pPixmap->drawable.bitsPerPixel;
if (bpp == 24) {
if (devKind < 0) {
w = width;
if (w <= 0)
w = pPixmap->drawable.width;
devKind = BitmapBytePad(w * 24);
}
}
return miModifyPixmapHeader(pPixmap, width, height, depth, bitsPerPixel,
devKind, pPixData);
}
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