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c677fc611b
xserver-multidpi/fb/fbcmap.c
Jamey Sharp a2c716eaf6 fb: track screens' installed colormaps as screen privates. 
Several DDXes allow each screen to have at most one (or in some cases,
exactly one) installed colormap. These all use the same pattern: Declare
a global-lifetime array of MAXSCREENS ColormapPtrs, and index it by
screen number. This patch converts most of those to use screen privates
instead.

Signed-off-by: Jamey Sharp <jamey@minilop.net>
Acked-by: Tiago Vignatti <tiago.vignatti@nokia.com>
2010-04-23 15:32:19 +03:00

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/*
* Copyright © 1987 Sun Microsystems, Inc. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#ifdef HAVE_DIX_CONFIG_H
#include <dix-config.h>
#endif
#include <X11/X.h>
#include <X11/Xproto.h>
#include "scrnintstr.h"
#include "colormapst.h"
#include "resource.h"
#include "fb.h"
#ifdef XFree86Server
#error "You should be compiling fbcmap_mi.c instead of fbcmap.c!"
#endif
static int cmapScrPrivateKeyIndex;
static DevPrivateKey cmapScrPrivateKey = &cmapScrPrivateKeyIndex;
#define GetInstalledColormap(s) ((ColormapPtr) dixLookupPrivate(&(s)->devPrivates, cmapScrPrivateKey))
#define SetInstalledColormap(s,c) (dixSetPrivate(&(s)->devPrivates, cmapScrPrivateKey, c))
int
fbListInstalledColormaps(ScreenPtr pScreen, Colormap *pmaps)
{
/* By the time we are processing requests, we can guarantee that there
* is always a colormap installed */
*pmaps = GetInstalledColormap(pScreen)->mid;
return (1);
}
void
fbInstallColormap(ColormapPtr pmap)
{
ColormapPtr oldpmap = GetInstalledColormap(pmap->pScreen);
if(pmap != oldpmap)
{
/* Uninstall pInstalledMap. No hardware changes required, just
* notify all interested parties. */
if(oldpmap != (ColormapPtr)None)
WalkTree(pmap->pScreen, TellLostMap, (char *)&oldpmap->mid);
/* Install pmap */
SetInstalledColormap(pmap->pScreen, pmap);
WalkTree(pmap->pScreen, TellGainedMap, (char *)&pmap->mid);
}
}
void
fbUninstallColormap(ColormapPtr pmap)
{
ColormapPtr curpmap = GetInstalledColormap(pmap->pScreen);
if(pmap == curpmap)
{
if (pmap->mid != pmap->pScreen->defColormap)
{
dixLookupResourceByType((pointer *)&curpmap,
pmap->pScreen->defColormap,
RT_COLORMAP,
serverClient, DixInstallAccess);
(*pmap->pScreen->InstallColormap)(curpmap);
}
}
}
void
fbResolveColor(unsigned short *pred,
unsigned short *pgreen,
unsigned short *pblue,
VisualPtr pVisual)
{
int shift = 16 - pVisual->bitsPerRGBValue;
unsigned lim = (1 << pVisual->bitsPerRGBValue) - 1;
if ((pVisual->class | DynamicClass) == GrayScale)
{
/* rescale to gray then rgb bits */
*pred = (30L * *pred + 59L * *pgreen + 11L * *pblue) / 100;
*pblue = *pgreen = *pred = ((*pred >> shift) * 65535) / lim;
}
else
{
/* rescale to rgb bits */
*pred = ((*pred >> shift) * 65535) / lim;
*pgreen = ((*pgreen >> shift) * 65535) / lim;
*pblue = ((*pblue >> shift) * 65535) / lim;
}
}
Bool
fbInitializeColormap(ColormapPtr pmap)
{
register unsigned i;
register VisualPtr pVisual;
unsigned lim, maxent, shift;
pVisual = pmap->pVisual;
lim = (1 << pVisual->bitsPerRGBValue) - 1;
shift = 16 - pVisual->bitsPerRGBValue;
maxent = pVisual->ColormapEntries - 1;
if (pVisual->class == TrueColor)
{
unsigned limr, limg, limb;
limr = pVisual->redMask >> pVisual->offsetRed;
limg = pVisual->greenMask >> pVisual->offsetGreen;
limb = pVisual->blueMask >> pVisual->offsetBlue;
for(i = 0; i <= maxent; i++)
{
/* rescale to [0..65535] then rgb bits */
pmap->red[i].co.local.red =
((((i * 65535) / limr) >> shift) * 65535) / lim;
pmap->green[i].co.local.green =
((((i * 65535) / limg) >> shift) * 65535) / lim;
pmap->blue[i].co.local.blue =
((((i * 65535) / limb) >> shift) * 65535) / lim;
}
}
else if (pVisual->class == StaticColor)
{
unsigned n;
unsigned r, g, b;
unsigned red, green, blue;
for (n = 0; n*n*n < pVisual->ColormapEntries; n++)
;
n--;
i = 0;
for (r = 0; r < n; r++)
{
red = (((r * 65535 / (n - 1)) >> shift) * 65535) / lim;
for (g = 0; g < n; g++)
{
green = (((g * 65535 / (n - 1)) >> shift) * 65535) / lim;
for (b = 0; b < n; b++)
{
blue = (((b * 65535 / (n - 1)) >> shift) * 65535) / lim;
pmap->red[i].co.local.red = red;
pmap->red[i].co.local.green = green;
pmap->red[i].co.local.blue = blue;
i++;
}
}
}
n = pVisual->ColormapEntries - i;
for (r = 0; r < n; r++)
{
red = (((r * 65535 / (n - 1)) >> shift) * 65535) / lim;
pmap->red[i].co.local.red = red;
pmap->red[i].co.local.green = red;
pmap->red[i].co.local.blue = red;
i++;
}
}
else if (pVisual->class == StaticGray)
{
for(i = 0; i <= maxent; i++)
{
/* rescale to [0..65535] then rgb bits */
pmap->red[i].co.local.red = ((((i * 65535) / maxent) >> shift)
* 65535) / lim;
pmap->red[i].co.local.green = pmap->red[i].co.local.red;
pmap->red[i].co.local.blue = pmap->red[i].co.local.red;
}
}
return TRUE;
}
/* When simulating DirectColor on PseudoColor hardware, multiple
entries of the colormap must be updated
*/
#define AddElement(mask) { \
pixel = red | green | blue; \
for (i = 0; i < nresult; i++) \
if (outdefs[i].pixel == pixel) \
break; \
if (i == nresult) \
{ \
nresult++; \
outdefs[i].pixel = pixel; \
outdefs[i].flags = 0; \
} \
outdefs[i].flags |= (mask); \
outdefs[i].red = pmap->red[red >> pVisual->offsetRed].co.local.red; \
outdefs[i].green = pmap->green[green >> pVisual->offsetGreen].co.local.green; \
outdefs[i].blue = pmap->blue[blue >> pVisual->offsetBlue].co.local.blue; \
}
int
fbExpandDirectColors (ColormapPtr pmap,
int ndef,
xColorItem *indefs,
xColorItem *outdefs)
{
register int red, green, blue;
int maxred, maxgreen, maxblue;
int stepred, stepgreen, stepblue;
VisualPtr pVisual;
register int pixel;
register int nresult;
register int i;
pVisual = pmap->pVisual;
stepred = 1 << pVisual->offsetRed;
stepgreen = 1 << pVisual->offsetGreen;
stepblue = 1 << pVisual->offsetBlue;
maxred = pVisual->redMask;
maxgreen = pVisual->greenMask;
maxblue = pVisual->blueMask;
nresult = 0;
for (;ndef--; indefs++)
{
if (indefs->flags & DoRed)
{
red = indefs->pixel & pVisual->redMask;
for (green = 0; green <= maxgreen; green += stepgreen)
{
for (blue = 0; blue <= maxblue; blue += stepblue)
{
AddElement (DoRed)
}
}
}
if (indefs->flags & DoGreen)
{
green = indefs->pixel & pVisual->greenMask;
for (red = 0; red <= maxred; red += stepred)
{
for (blue = 0; blue <= maxblue; blue += stepblue)
{
AddElement (DoGreen)
}
}
}
if (indefs->flags & DoBlue)
{
blue = indefs->pixel & pVisual->blueMask;
for (red = 0; red <= maxred; red += stepred)
{
for (green = 0; green <= maxgreen; green += stepgreen)
{
AddElement (DoBlue)
}
}
}
}
return nresult;
}
Bool
fbCreateDefColormap(ScreenPtr pScreen)
{
unsigned short zero = 0, ones = 0xFFFF;
VisualPtr pVisual;
ColormapPtr cmap;
Pixel wp, bp;
for (pVisual = pScreen->visuals;
pVisual->vid != pScreen->rootVisual;
pVisual++)
;
if (CreateColormap(pScreen->defColormap, pScreen, pVisual, &cmap,
(pVisual->class & DynamicClass) ? AllocNone : AllocAll,
0)
!= Success)
return FALSE;
wp = pScreen->whitePixel;
bp = pScreen->blackPixel;
if ((AllocColor(cmap, &ones, &ones, &ones, &wp, 0) !=
Success) ||
(AllocColor(cmap, &zero, &zero, &zero, &bp, 0) !=
Success))
return FALSE;
pScreen->whitePixel = wp;
pScreen->blackPixel = bp;
(*pScreen->InstallColormap)(cmap);
return TRUE;
}
extern int defaultColorVisualClass;
#define _RZ(d) ((d + 2) / 3)
#define _RS(d) 0
#define _RM(d) ((1 << _RZ(d)) - 1)
#define _GZ(d) ((d - _RZ(d) + 1) / 2)
#define _GS(d) _RZ(d)
#define _GM(d) (((1 << _GZ(d)) - 1) << _GS(d))
#define _BZ(d) (d - _RZ(d) - _GZ(d))
#define _BS(d) (_RZ(d) + _GZ(d))
#define _BM(d) (((1 << _BZ(d)) - 1) << _BS(d))
#define _CE(d) (1 << _RZ(d))
#define MAX_PSEUDO_DEPTH 10 /* largest DAC size I know */
#define StaticGrayMask (1 << StaticGray)
#define GrayScaleMask (1 << GrayScale)
#define StaticColorMask (1 << StaticColor)
#define PseudoColorMask (1 << PseudoColor)
#define TrueColorMask (1 << TrueColor)
#define DirectColorMask (1 << DirectColor)
#define ALL_VISUALS (StaticGrayMask|\
GrayScaleMask|\
StaticColorMask|\
PseudoColorMask|\
TrueColorMask|\
DirectColorMask)
#define LARGE_VISUALS (TrueColorMask|\
DirectColorMask)
typedef struct _fbVisuals {
struct _fbVisuals *next;
int depth;
int bitsPerRGB;
int visuals;
int count;
Pixel redMask, greenMask, blueMask;
} fbVisualsRec, *fbVisualsPtr;
static const int fbVisualPriority[] = {
PseudoColor, DirectColor, GrayScale, StaticColor, TrueColor, StaticGray
};
#define NUM_PRIORITY 6
static fbVisualsPtr fbVisuals;
static int
popCount (int i)
{
int count;
count = (i >> 1) & 033333333333;
count = i - count - ((count >> 1) & 033333333333);
count = (((count + (count >> 3)) & 030707070707) % 077); /* HAKMEM 169 */
return count;
}
/*
* Distance to least significant one bit
*/
static int
maskShift (Pixel p)
{
int s;
if (!p) return 0;
s = 0;
while (!(p & 1))
{
s++;
p >>= 1;
}
return s;
}
Bool
fbSetVisualTypesAndMasks (int depth, int visuals, int bitsPerRGB,
Pixel redMask, Pixel greenMask, Pixel blueMask)
{
fbVisualsPtr new, *prev, v;
new = (fbVisualsPtr) xalloc (sizeof *new);
if (!new)
return FALSE;
if (!redMask || !greenMask || !blueMask)
{
redMask = _RM(depth);
greenMask = _GM(depth);
blueMask = _BM(depth);
}
new->next = 0;
new->depth = depth;
new->visuals = visuals;
new->bitsPerRGB = bitsPerRGB;
new->redMask = redMask;
new->greenMask = greenMask;
new->blueMask = blueMask;
new->count = popCount (visuals);
for (prev = &fbVisuals; (v = *prev); prev = &v->next);
*prev = new;
return TRUE;
}
Bool
fbHasVisualTypes (int depth)
{
fbVisualsPtr v;
for (v = fbVisuals; v; v = v->next)
if (v->depth == depth)
return TRUE;
return FALSE;
}
Bool
fbSetVisualTypes (int depth, int visuals, int bitsPerRGB)
{
return fbSetVisualTypesAndMasks (depth, visuals, bitsPerRGB,
_RM(depth), _GM(depth), _BM(depth));
}
/*
* Given a list of formats for a screen, create a list
* of visuals and depths for the screen which coorespond to
* the set which can be used with this version of fb.
*/
Bool
fbInitVisuals (VisualPtr *visualp,
DepthPtr *depthp,
int *nvisualp,
int *ndepthp,
int *rootDepthp,
VisualID *defaultVisp,
unsigned long sizes,
int bitsPerRGB)
{
int i, j = 0, k;
VisualPtr visual;
DepthPtr depth;
VisualID *vid;
int d, b;
int f;
int ndepth, nvisual;
int nvtype;
int vtype;
fbVisualsPtr visuals, nextVisuals;
/* none specified, we'll guess from pixmap formats */
if (!fbVisuals)
{
for (f = 0; f < screenInfo.numPixmapFormats; f++)
{
d = screenInfo.formats[f].depth;
b = screenInfo.formats[f].bitsPerPixel;
if (sizes & (1 << (b - 1)))
{
if (d > MAX_PSEUDO_DEPTH)
vtype = LARGE_VISUALS;
else if (d == 1)
vtype = StaticGrayMask;
else
vtype = ALL_VISUALS;
}
else
vtype = 0;
if (!fbSetVisualTypes (d, vtype, bitsPerRGB))
return FALSE;
}
}
nvisual = 0;
ndepth = 0;
for (visuals = fbVisuals; visuals; visuals = nextVisuals)
{
nextVisuals = visuals->next;
ndepth++;
nvisual += visuals->count;
}
depth = (DepthPtr) xalloc (ndepth * sizeof (DepthRec));
visual = (VisualPtr) xalloc (nvisual * sizeof (VisualRec));
if (!depth || !visual)
{
xfree (depth);
xfree (visual);
return FALSE;
}
*depthp = depth;
*visualp = visual;
*ndepthp = ndepth;
*nvisualp = nvisual;
for (visuals = fbVisuals; visuals; visuals = nextVisuals)
{
nextVisuals = visuals->next;
d = visuals->depth;
vtype = visuals->visuals;
nvtype = visuals->count;
vid = NULL;
if (nvtype)
{
vid = (VisualID *) xalloc (nvtype * sizeof (VisualID));
if (!vid)
return FALSE;
}
depth->depth = d;
depth->numVids = nvtype;
depth->vids = vid;
depth++;
for (i = 0; i < NUM_PRIORITY; i++) {
if (! (vtype & (1 << fbVisualPriority[i])))
continue;
visual->class = fbVisualPriority[i];
visual->bitsPerRGBValue = visuals->bitsPerRGB;
visual->ColormapEntries = 1 << d;
visual->nplanes = d;
visual->vid = *vid = FakeClientID (0);
switch (visual->class) {
case PseudoColor:
case GrayScale:
case StaticGray:
case StaticColor:
visual->redMask = 0;
visual->greenMask = 0;
visual->blueMask = 0;
visual->offsetRed = 0;
visual->offsetGreen = 0;
visual->offsetBlue = 0;
break;
case DirectColor:
case TrueColor:
visual->ColormapEntries = _CE(d);
visual->redMask = visuals->redMask;
visual->greenMask = visuals->greenMask;
visual->blueMask = visuals->blueMask;
visual->offsetRed = maskShift (visuals->redMask);
visual->offsetGreen = maskShift (visuals->greenMask);
visual->offsetBlue = maskShift (visuals->blueMask);
}
vid++;
visual++;
}
xfree (visuals);
}
fbVisuals = NULL;
visual = *visualp;
depth = *depthp;
for (i = 0; i < ndepth; i++)
{
if (*rootDepthp && *rootDepthp != depth[i].depth)
continue;
for (j = 0; j < depth[i].numVids; j++)
{
for (k = 0; k < nvisual; k++)
if (visual[k].vid == depth[i].vids[j])
break;
if (k == nvisual)
continue;
if (defaultColorVisualClass < 0 ||
visual[k].class == defaultColorVisualClass)
break;
}
if (j != depth[i].numVids)
break;
}
if (i == ndepth) {
for (i = 0; i < ndepth; i++)
{
if (depth[i].numVids)
break;
}
if (i == ndepth)
return FALSE;
j = 0;
}
*rootDepthp = depth[i].depth;
*defaultVisp = depth[i].vids[j];
return TRUE;
}
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