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-rw-r--r--hw/xfree86/common/xf86cmap.c1111
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diff --git a/hw/xfree86/common/xf86cmap.c b/hw/xfree86/common/xf86cmap.c
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index 764647ee4..000000000
--- a/hw/xfree86/common/xf86cmap.c
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@@ -1,1111 +0,0 @@
-/*
- * Copyright (c) 1998-2001 by The XFree86 Project, Inc.
- *
- * 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 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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.
- *
- * Except as contained in this notice, the name of the copyright holder(s)
- * and author(s) shall not be used in advertising or otherwise to promote
- * the sale, use or other dealings in this Software without prior written
- * authorization from the copyright holder(s) and author(s).
- */
-
-#ifdef HAVE_XORG_CONFIG_H
-#include <xorg-config.h>
-#endif
-
-#if defined(_XOPEN_SOURCE) || defined(__QNXNTO__) \
- || (defined(sun) && defined(__SVR4))
-#include <math.h>
-#else
-#define _XOPEN_SOURCE /* to get prototype for pow on some systems */
-#include <math.h>
-#undef _XOPEN_SOURCE
-#endif
-
-#include <X11/X.h>
-#include "misc.h"
-#include <X11/Xproto.h>
-#include "colormapst.h"
-#include "scrnintstr.h"
-
-#include "resource.h"
-
-#include "xf86.h"
-#include "xf86_OSproc.h"
-#include "xf86str.h"
-#include "micmap.h"
-
-#ifdef XFreeXDGA
-#define _XF86DGA_SERVER_
-#include <X11/extensions/xf86dgastr.h>
-#include "dgaproc.h"
-#endif
-
-#include "xf86cmap.h"
-
-#define SCREEN_PROLOGUE(pScreen, field) ((pScreen)->field = \
- ((CMapScreenPtr)dixLookupPrivate(&(pScreen)->devPrivates, CMapScreenKey))->field)
-#define SCREEN_EPILOGUE(pScreen, field, wrapper)\
- ((pScreen)->field = wrapper)
-
-#define LOAD_PALETTE(pmap, index) \
- ((pmap == miInstalledMaps[index]) && \
- ((pScreenPriv->flags & CMAP_LOAD_EVEN_IF_OFFSCREEN) || \
- xf86Screens[index]->vtSema || pScreenPriv->isDGAmode))
-
-
-typedef struct _CMapLink {
- ColormapPtr cmap;
- struct _CMapLink *next;
-} CMapLink, *CMapLinkPtr;
-
-typedef struct {
- ScrnInfoPtr pScrn;
- CloseScreenProcPtr CloseScreen;
- CreateColormapProcPtr CreateColormap;
- DestroyColormapProcPtr DestroyColormap;
- InstallColormapProcPtr InstallColormap;
- StoreColorsProcPtr StoreColors;
- Bool (*EnterVT)(int, int);
- Bool (*SwitchMode)(int, DisplayModePtr, int);
- int (*SetDGAMode)(int, int, DGADevicePtr);
- int maxColors;
- int sigRGBbits;
- int gammaElements;
- LOCO *gamma;
- int *PreAllocIndices;
- CMapLinkPtr maps;
- unsigned int flags;
- Bool isDGAmode;
-} CMapScreenRec, *CMapScreenPtr;
-
-typedef struct {
- int numColors;
- LOCO *colors;
- Bool recalculate;
- int overscan;
-} CMapColormapRec, *CMapColormapPtr;
-
-static DevPrivateKey CMapScreenKey = NULL;
-static DevPrivateKey CMapColormapKey = &CMapColormapKey;
-
-static void CMapInstallColormap(ColormapPtr);
-static void CMapStoreColors(ColormapPtr, int, xColorItem *);
-static Bool CMapCloseScreen (int, ScreenPtr);
-static Bool CMapCreateColormap (ColormapPtr);
-static void CMapDestroyColormap (ColormapPtr);
-
-static Bool CMapEnterVT(int, int);
-static Bool CMapSwitchMode(int, DisplayModePtr, int);
-static int CMapSetDGAMode(int, int, DGADevicePtr);
-static int CMapChangeGamma(int, Gamma);
-
-static void ComputeGamma(CMapScreenPtr);
-static Bool CMapAllocateColormapPrivate(ColormapPtr);
-static void CMapRefreshColors(ColormapPtr, int, int*);
-static void CMapSetOverscan(ColormapPtr, int, int *);
-static void CMapReinstallMap(ColormapPtr);
-static void CMapUnwrapScreen(ScreenPtr pScreen);
-
-
-
-_X_EXPORT Bool xf86HandleColormaps(
- ScreenPtr pScreen,
- int maxColors,
- int sigRGBbits,
- xf86LoadPaletteProc *loadPalette,
- xf86SetOverscanProc *setOverscan,
- unsigned int flags
-){
- ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
- ColormapPtr pDefMap = NULL;
- CMapScreenPtr pScreenPriv;
- LOCO *gamma;
- int *indices;
- int elements;
-
- if(!maxColors || !sigRGBbits || !loadPalette)
- return FALSE;
-
- CMapScreenKey = &CMapScreenKey;
-
- elements = 1 << sigRGBbits;
-
- if(!(gamma = xalloc(elements * sizeof(LOCO))))
- return FALSE;
-
- if(!(indices = xalloc(maxColors * sizeof(int)))) {
- xfree(gamma);
- return FALSE;
- }
-
- if(!(pScreenPriv = xalloc(sizeof(CMapScreenRec)))) {
- xfree(gamma);
- xfree(indices);
- return FALSE;
- }
-
- dixSetPrivate(&pScreen->devPrivates, CMapScreenKey, pScreenPriv);
-
- pScreenPriv->CloseScreen = pScreen->CloseScreen;
- pScreenPriv->CreateColormap = pScreen->CreateColormap;
- pScreenPriv->DestroyColormap = pScreen->DestroyColormap;
- pScreenPriv->InstallColormap = pScreen->InstallColormap;
- pScreenPriv->StoreColors = pScreen->StoreColors;
- pScreen->CloseScreen = CMapCloseScreen;
- pScreen->CreateColormap = CMapCreateColormap;
- pScreen->DestroyColormap = CMapDestroyColormap;
- pScreen->InstallColormap = CMapInstallColormap;
- pScreen->StoreColors = CMapStoreColors;
-
- pScreenPriv->pScrn = pScrn;
- pScrn->LoadPalette = loadPalette;
- pScrn->SetOverscan = setOverscan;
- pScreenPriv->maxColors = maxColors;
- pScreenPriv->sigRGBbits = sigRGBbits;
- pScreenPriv->gammaElements = elements;
- pScreenPriv->gamma = gamma;
- pScreenPriv->PreAllocIndices = indices;
- pScreenPriv->maps = NULL;
- pScreenPriv->flags = flags;
- pScreenPriv->isDGAmode = FALSE;
-
- pScreenPriv->EnterVT = pScrn->EnterVT;
- pScreenPriv->SwitchMode = pScrn->SwitchMode;
- pScreenPriv->SetDGAMode = pScrn->SetDGAMode;
-
- if (!(flags & CMAP_LOAD_EVEN_IF_OFFSCREEN)) {
- pScrn->EnterVT = CMapEnterVT;
- if ((flags & CMAP_RELOAD_ON_MODE_SWITCH) && pScrn->SwitchMode)
- pScrn->SwitchMode = CMapSwitchMode;
- }
-#ifdef XFreeXDGA
- pScrn->SetDGAMode = CMapSetDGAMode;
-#endif
- pScrn->ChangeGamma = CMapChangeGamma;
-
- ComputeGamma(pScreenPriv);
-
- /* get the default map */
-
- pDefMap = (ColormapPtr) LookupIDByType(pScreen->defColormap, RT_COLORMAP);
-
- if(!CMapAllocateColormapPrivate(pDefMap)) {
- CMapUnwrapScreen(pScreen);
- return FALSE;
- }
-
- /* Force the initial map to be loaded */
- miInstalledMaps[pScreen->myNum] = NULL;
- CMapInstallColormap(pDefMap);
- return TRUE;
-}
-
-
-/**** Screen functions ****/
-
-
-static Bool
-CMapCloseScreen (int i, ScreenPtr pScreen)
-{
- CMapUnwrapScreen(pScreen);
-
- return (*pScreen->CloseScreen) (i, pScreen);
-}
-
-static Bool
-CMapColormapUseMax(VisualPtr pVisual, CMapScreenPtr pScreenPriv)
-{
- if (pVisual->nplanes > 16)
- return TRUE;
- return ((1 << pVisual->nplanes) > pScreenPriv->maxColors);
-}
-
-static Bool
-CMapAllocateColormapPrivate(ColormapPtr pmap)
-{
- CMapScreenPtr pScreenPriv = (CMapScreenPtr)dixLookupPrivate(
- &pmap->pScreen->devPrivates, CMapScreenKey);
- CMapColormapPtr pColPriv;
- CMapLinkPtr pLink;
- int numColors;
- LOCO *colors;
-
- if (CMapColormapUseMax(pmap->pVisual, pScreenPriv))
- numColors = pmap->pVisual->ColormapEntries;
- else
- numColors = 1 << pmap->pVisual->nplanes;
-
- if(!(colors = xalloc(numColors * sizeof(LOCO))))
- return FALSE;
-
- if(!(pColPriv = xalloc(sizeof(CMapColormapRec)))) {
- xfree(colors);
- return FALSE;
- }
-
- dixSetPrivate(&pmap->devPrivates, CMapColormapKey, pColPriv);
-
- pColPriv->numColors = numColors;
- pColPriv->colors = colors;
- pColPriv->recalculate = TRUE;
- pColPriv->overscan = -1;
-
- /* add map to list */
- pLink = xalloc(sizeof(CMapLink));
- if(pLink) {
- pLink->cmap = pmap;
- pLink->next = pScreenPriv->maps;
- pScreenPriv->maps = pLink;
- }
-
- return TRUE;
-}
-
-static Bool
-CMapCreateColormap (ColormapPtr pmap)
-{
- ScreenPtr pScreen = pmap->pScreen;
- CMapScreenPtr pScreenPriv = (CMapScreenPtr)dixLookupPrivate(
- &pScreen->devPrivates, CMapScreenKey);
- Bool ret = FALSE;
-
- pScreen->CreateColormap = pScreenPriv->CreateColormap;
- if((*pScreen->CreateColormap)(pmap)) {
- if(CMapAllocateColormapPrivate(pmap))
- ret = TRUE;
- }
- pScreen->CreateColormap = CMapCreateColormap;
-
- return ret;
-}
-
-static void
-CMapDestroyColormap (ColormapPtr cmap)
-{
- ScreenPtr pScreen = cmap->pScreen;
- CMapScreenPtr pScreenPriv = (CMapScreenPtr)dixLookupPrivate(
- &pScreen->devPrivates, CMapScreenKey);
- CMapColormapPtr pColPriv = (CMapColormapPtr)dixLookupPrivate(
- &cmap->devPrivates, CMapColormapKey);
- CMapLinkPtr prevLink = NULL, pLink = pScreenPriv->maps;
-
- if(pColPriv) {
- if(pColPriv->colors) xfree(pColPriv->colors);
- xfree(pColPriv);
- }
-
- /* remove map from list */
- while(pLink) {
- if(pLink->cmap == cmap) {
- if(prevLink)
- prevLink->next = pLink->next;
- else
- pScreenPriv->maps = pLink->next;
- xfree(pLink);
- break;
- }
- prevLink = pLink;
- pLink = pLink->next;
- }
-
- if(pScreenPriv->DestroyColormap) {
- pScreen->DestroyColormap = pScreenPriv->DestroyColormap;
- (*pScreen->DestroyColormap)(cmap);
- pScreen->DestroyColormap = CMapDestroyColormap;
- }
-}
-
-
-
-static void
-CMapStoreColors(
- ColormapPtr pmap,
- int ndef,
- xColorItem *pdefs
-){
- ScreenPtr pScreen = pmap->pScreen;
- VisualPtr pVisual = pmap->pVisual;
- CMapScreenPtr pScreenPriv = (CMapScreenPtr)dixLookupPrivate(
- &pScreen->devPrivates, CMapScreenKey);
- int *indices = pScreenPriv->PreAllocIndices;
- int num = ndef;
-
- /* At the moment this isn't necessary since there's nobody below us */
- pScreen->StoreColors = pScreenPriv->StoreColors;
- (*pScreen->StoreColors)(pmap, ndef, pdefs);
- pScreen->StoreColors = CMapStoreColors;
-
- /* should never get here for these */
- if( (pVisual->class == TrueColor) ||
- (pVisual->class == StaticColor) ||
- (pVisual->class == StaticGray))
- return;
-
- if(pVisual->class == DirectColor) {
- CMapColormapPtr pColPriv = (CMapColormapPtr)dixLookupPrivate(
- &pmap->devPrivates, CMapColormapKey);
- int i;
-
- if (CMapColormapUseMax(pVisual, pScreenPriv)) {
- int index;
-
- num = 0;
- while(ndef--) {
- if(pdefs[ndef].flags & DoRed) {
- index = (pdefs[ndef].pixel & pVisual->redMask) >>
- pVisual->offsetRed;
- i = num;
- while(i--)
- if(indices[i] == index) break;
- if(i == -1)
- indices[num++] = index;
- }
- if(pdefs[ndef].flags & DoGreen) {
- index = (pdefs[ndef].pixel & pVisual->greenMask) >>
- pVisual->offsetGreen;
- i = num;
- while(i--)
- if(indices[i] == index) break;
- if(i == -1)
- indices[num++] = index;
- }
- if(pdefs[ndef].flags & DoBlue) {
- index = (pdefs[ndef].pixel & pVisual->blueMask) >>
- pVisual->offsetBlue;
- i = num;
- while(i--)
- if(indices[i] == index) break;
- if(i == -1)
- indices[num++] = index;
- }
- }
-
- } else {
- /* not really as overkill as it seems */
- num = pColPriv->numColors;
- for(i = 0; i < pColPriv->numColors; i++)
- indices[i] = i;
- }
- } else {
- while(ndef--)
- indices[ndef] = pdefs[ndef].pixel;
- }
-
- CMapRefreshColors(pmap, num, indices);
-}
-
-
-static void
-CMapInstallColormap(ColormapPtr pmap)
-{
- ScreenPtr pScreen = pmap->pScreen;
- int index = pScreen->myNum;
- CMapScreenPtr pScreenPriv = (CMapScreenPtr)dixLookupPrivate(
- &pScreen->devPrivates, CMapScreenKey);
-
- if (pmap == miInstalledMaps[index])
- return;
-
- pScreen->InstallColormap = pScreenPriv->InstallColormap;
- (*pScreen->InstallColormap)(pmap);
- pScreen->InstallColormap = CMapInstallColormap;
-
- /* Important. We let the lower layers, namely DGA,
- overwrite the choice of Colormap to install */
- if (miInstalledMaps[index])
- pmap = miInstalledMaps[index];
-
- if (!(pScreenPriv->flags & CMAP_PALETTED_TRUECOLOR) &&
- (pmap->pVisual->class == TrueColor) &&
- CMapColormapUseMax(pmap->pVisual, pScreenPriv))
- return;
-
- if(LOAD_PALETTE(pmap, index))
- CMapReinstallMap(pmap);
-}
-
-
-/**** ScrnInfoRec functions ****/
-
-static Bool
-CMapEnterVT(int index, int flags)
-{
- ScreenPtr pScreen = screenInfo.screens[index];
- CMapScreenPtr pScreenPriv = (CMapScreenPtr)dixLookupPrivate(
- &pScreen->devPrivates, CMapScreenKey);
-
- if((*pScreenPriv->EnterVT)(index, flags)) {
- if(miInstalledMaps[index])
- CMapReinstallMap(miInstalledMaps[index]);
- return TRUE;
- }
- return FALSE;
-}
-
-
-static Bool
-CMapSwitchMode(int index, DisplayModePtr mode, int flags)
-{
- ScreenPtr pScreen = screenInfo.screens[index];
- CMapScreenPtr pScreenPriv = (CMapScreenPtr)dixLookupPrivate(
- &pScreen->devPrivates, CMapScreenKey);
-
- if((*pScreenPriv->SwitchMode)(index, mode, flags)) {
- if(miInstalledMaps[index])
- CMapReinstallMap(miInstalledMaps[index]);
- return TRUE;
- }
- return FALSE;
-}
-
-#ifdef XFreeXDGA
-static int
-CMapSetDGAMode(int index, int num, DGADevicePtr dev)
-{
- ScreenPtr pScreen = screenInfo.screens[index];
- CMapScreenPtr pScreenPriv = (CMapScreenPtr)dixLookupPrivate(
- &pScreen->devPrivates, CMapScreenKey);
- int ret;
-
- ret = (*pScreenPriv->SetDGAMode)(index, num, dev);
-
- pScreenPriv->isDGAmode = DGAActive(index);
-
- if(!pScreenPriv->isDGAmode && miInstalledMaps[index]
- && xf86Screens[pScreen->myNum]->vtSema)
- CMapReinstallMap(miInstalledMaps[index]);
-
- return ret;
-}
-#endif
-
-
-/**** Utilities ****/
-
-static void
-CMapReinstallMap(ColormapPtr pmap)
-{
- CMapScreenPtr pScreenPriv = (CMapScreenPtr)dixLookupPrivate(
- &pmap->pScreen->devPrivates, CMapScreenKey);
- CMapColormapPtr cmapPriv = (CMapColormapPtr)dixLookupPrivate(
- &pmap->devPrivates, CMapColormapKey);
- ScrnInfoPtr pScrn = xf86Screens[pmap->pScreen->myNum];
- int i = cmapPriv->numColors;
- int *indices = pScreenPriv->PreAllocIndices;
-
- while(i--)
- indices[i] = i;
-
- if(cmapPriv->recalculate)
- CMapRefreshColors(pmap, cmapPriv->numColors, indices);
- else {
- (*pScrn->LoadPalette)(pScrn, cmapPriv->numColors,
- indices, cmapPriv->colors, pmap->pVisual);
- if (pScrn->SetOverscan) {
-#ifdef DEBUGOVERSCAN
- ErrorF("SetOverscan() called from CMapReinstallMap\n");
-#endif
- pScrn->SetOverscan(pScrn, cmapPriv->overscan);
- }
- }
-
- cmapPriv->recalculate = FALSE;
-}
-
-
-static void
-CMapRefreshColors(ColormapPtr pmap, int defs, int* indices)
-{
- CMapScreenPtr pScreenPriv = (CMapScreenPtr)dixLookupPrivate(
- &pmap->pScreen->devPrivates, CMapScreenKey);
- CMapColormapPtr pColPriv = (CMapColormapPtr)dixLookupPrivate(
- &pmap->devPrivates, CMapColormapKey);
- VisualPtr pVisual = pmap->pVisual;
- ScrnInfoPtr pScrn = xf86Screens[pmap->pScreen->myNum];
- int numColors, i;
- LOCO *gamma, *colors;
- EntryPtr entry;
- int reds, greens, blues, maxValue, index, shift;
-
- numColors = pColPriv->numColors;
- shift = 16 - pScreenPriv->sigRGBbits;
- maxValue = (1 << pScreenPriv->sigRGBbits) - 1;
- gamma = pScreenPriv->gamma;
- colors = pColPriv->colors;
-
- reds = pVisual->redMask >> pVisual->offsetRed;
- greens = pVisual->greenMask >> pVisual->offsetGreen;
- blues = pVisual->blueMask >> pVisual->offsetBlue;
-
- switch(pVisual->class) {
- case StaticGray:
- for(i = 0; i <= numColors - 1; i++) {
- index = i * maxValue / numColors;
- colors[i].red = gamma[index].red;
- colors[i].green = gamma[index].green;
- colors[i].blue = gamma[index].blue;
- }
- break;
- case TrueColor:
- if (CMapColormapUseMax(pVisual, pScreenPriv)) {
- for(i = 0; i <= reds; i++)
- colors[i].red = gamma[i * maxValue / reds].red;
- for(i = 0; i <= greens; i++)
- colors[i].green = gamma[i * maxValue / greens].green;
- for(i = 0; i <= blues; i++)
- colors[i].blue = gamma[i * maxValue / blues].blue;
- break;
- }
- for(i = 0; i < numColors; i++) {
- colors[i].red = gamma[((i >> pVisual->offsetRed) & reds) *
- maxValue / reds].red;
- colors[i].green = gamma[((i >> pVisual->offsetGreen) & greens) *
- maxValue / greens].green;
- colors[i].blue = gamma[((i >> pVisual->offsetBlue) & blues) *
- maxValue / blues].blue;
- }
- break;
- case StaticColor:
- case PseudoColor:
- case GrayScale:
- for(i = 0; i < defs; i++) {
- index = indices[i];
- entry = (EntryPtr)&pmap->red[index];
-
- if(entry->fShared) {
- colors[index].red =
- gamma[entry->co.shco.red->color >> shift].red;
- colors[index].green =
- gamma[entry->co.shco.green->color >> shift].green;
- colors[index].blue =
- gamma[entry->co.shco.blue->color >> shift].blue;
- } else {
- colors[index].red =
- gamma[entry->co.local.red >> shift].red;
- colors[index].green =
- gamma[entry->co.local.green >> shift].green;
- colors[index].blue =
- gamma[entry->co.local.blue >> shift].blue;
- }
- }
- break;
- case DirectColor:
- if (CMapColormapUseMax(pVisual, pScreenPriv)) {
- for(i = 0; i < defs; i++) {
- index = indices[i];
- if(index <= reds)
- colors[index].red =
- gamma[pmap->red[index].co.local.red >> shift].red;
- if(index <= greens)
- colors[index].green =
- gamma[pmap->green[index].co.local.green >> shift].green;
- if(index <= blues)
- colors[index].blue =
- gamma[pmap->blue[index].co.local.blue >> shift].blue;
-
- }
- break;
- }
- for(i = 0; i < defs; i++) {
- index = indices[i];
-
- colors[index].red = gamma[pmap->red[
- (index >> pVisual->offsetRed) & reds
- ].co.local.red >> shift].red;
- colors[index].green = gamma[pmap->green[
- (index >> pVisual->offsetGreen) & greens
- ].co.local.green >> shift].green;
- colors[index].blue = gamma[pmap->blue[
- (index >> pVisual->offsetBlue) & blues
- ].co.local.blue >> shift].blue;
- }
- break;
- }
-
-
- if(LOAD_PALETTE(pmap, pmap->pScreen->myNum))
- (*pScrn->LoadPalette)(pScreenPriv->pScrn, defs, indices,
- colors, pmap->pVisual);
-
- if (pScrn->SetOverscan)
- CMapSetOverscan(pmap, defs, indices);
-
-}
-
-static Bool
-CMapCompareColors(LOCO *color1, LOCO *color2)
-{
- /* return TRUE if the color1 is "closer" to black than color2 */
-#ifdef DEBUGOVERSCAN
- ErrorF("#%02x%02x%02x vs #%02x%02x%02x (%d vs %d)\n",
- color1->red, color1->green, color1->blue,
- color2->red, color2->green, color2->blue,
- color1->red + color1->green + color1->blue,
- color2->red + color2->green + color2->blue);
-#endif
- return (color1->red + color1->green + color1->blue <
- color2->red + color2->green + color2->blue);
-}
-
-static void
-CMapSetOverscan(ColormapPtr pmap, int defs, int *indices)
-{
- CMapScreenPtr pScreenPriv = (CMapScreenPtr)dixLookupPrivate(
- &pmap->pScreen->devPrivates, CMapScreenKey);
- CMapColormapPtr pColPriv = (CMapColormapPtr)dixLookupPrivate(
- &pmap->devPrivates, CMapColormapKey);
- ScrnInfoPtr pScrn = xf86Screens[pmap->pScreen->myNum];
- VisualPtr pVisual = pmap->pVisual;
- int i;
- LOCO *colors;
- int index;
- Bool newOverscan = FALSE;
- int overscan, tmpOverscan;
-
- colors = pColPriv->colors;
- overscan = pColPriv->overscan;
-
- /*
- * Search for a new overscan index in the following cases:
- *
- * - The index hasn't yet been initialised.  In this case search
- * for an index that is black or a close match to black.
- *
- * - The colour of the old index is changed. In this case search
- * all indices for a black or close match to black.
- *
- * - The colour of the old index wasn't black. In this case only
- * search the indices that were changed for a better match to black.
- */
-
- switch (pVisual->class) {
- case StaticGray:
- case TrueColor:
- /* Should only come here once. Initialise the overscan index to 0 */
- overscan = 0;
- newOverscan = TRUE;
- break;
- case StaticColor:
- /*
- * Only come here once, but search for the overscan in the same way
- * as for the other cases.
- */
- case DirectColor:
- case PseudoColor:
- case GrayScale:
- if (overscan < 0 || overscan > pScreenPriv->maxColors - 1) {
- /* Uninitialised */
- newOverscan = TRUE;
- } else {
- /* Check if the overscan was changed */
- for (i = 0; i < defs; i++) {
- index = indices[i];
- if (index == overscan) {
- newOverscan = TRUE;
- break;
- }
- }
- }
- if (newOverscan) {
- /* The overscan is either uninitialised or it has been changed */
-
- if (overscan < 0 || overscan > pScreenPriv->maxColors - 1)
- tmpOverscan = pScreenPriv->maxColors - 1;
- else
- tmpOverscan = overscan;
-
- /* search all entries for a close match to black */
- for (i = pScreenPriv->maxColors - 1; i >= 0; i--) {
- if (colors[i].red == 0 && colors[i].green == 0 &&
- colors[i].blue == 0) {
- overscan = i;
-#ifdef DEBUGOVERSCAN
- ErrorF("Black found at index 0x%02x\n", i);
-#endif
- break;
- } else {
-#ifdef DEBUGOVERSCAN
- ErrorF("0x%02x: ", i);
-#endif
- if (CMapCompareColors(&colors[i], &colors[tmpOverscan])) {
- tmpOverscan = i;
-#ifdef DEBUGOVERSCAN
- ErrorF("possible \"Black\" at index 0x%02x\n", i);
-#endif
- }
- }
- }
- if (i < 0)
- overscan = tmpOverscan;
- } else {
- /* Check of the old overscan wasn't black */
- if (colors[overscan].red != 0 || colors[overscan].green != 0 ||
- colors[overscan].blue != 0) {
- int oldOverscan = tmpOverscan = overscan;
- /* See of there is now a better match */
- for (i = 0; i < defs; i++) {
- index = indices[i];
- if (colors[index].red == 0 && colors[index].green == 0 &&
- colors[index].blue == 0) {
- overscan = index;
-#ifdef DEBUGOVERSCAN
- ErrorF("Black found at index 0x%02x\n", index);
-#endif
- break;
- } else {
-#ifdef DEBUGOVERSCAN
- ErrorF("0x%02x: ", index);
-#endif
- if (CMapCompareColors(&colors[index],
- &colors[tmpOverscan])) {
- tmpOverscan = index;
-#ifdef DEBUGOVERSCAN
- ErrorF("possible \"Black\" at index 0x%02x\n",
- index);
-#endif
- }
- }
- }
- if (i == defs)
- overscan = tmpOverscan;
- if (overscan != oldOverscan)
- newOverscan = TRUE;
- }
- }
- break;
- }
- if (newOverscan) {
- pColPriv->overscan = overscan;
- if (LOAD_PALETTE(pmap, pmap->pScreen->myNum)) {
-#ifdef DEBUGOVERSCAN
- ErrorF("SetOverscan() called from CmapSetOverscan\n");
-#endif
- pScrn->SetOverscan(pScreenPriv->pScrn, overscan);
- }
- }
-}
-
-static void
-CMapUnwrapScreen(ScreenPtr pScreen)
-{
- CMapScreenPtr pScreenPriv = (CMapScreenPtr)dixLookupPrivate(
- &pScreen->devPrivates, CMapScreenKey);
- ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
-
- pScreen->CloseScreen = pScreenPriv->CloseScreen;
- pScreen->CreateColormap = pScreenPriv->CreateColormap;
- pScreen->DestroyColormap = pScreenPriv->DestroyColormap;
- pScreen->InstallColormap = pScreenPriv->InstallColormap;
- pScreen->StoreColors = pScreenPriv->StoreColors;
-
- pScrn->EnterVT = pScreenPriv->EnterVT;
- pScrn->SwitchMode = pScreenPriv->SwitchMode;
- pScrn->SetDGAMode = pScreenPriv->SetDGAMode;
-
- xfree(pScreenPriv->gamma);
- xfree(pScreenPriv->PreAllocIndices);
- xfree(pScreenPriv);
-}
-
-
-static void
-ComputeGamma(CMapScreenPtr priv)
-{
- int elements = priv->gammaElements - 1;
- double RedGamma, GreenGamma, BlueGamma;
- int i;
-
-#ifndef DONT_CHECK_GAMMA
- /* This check is to catch drivers that are not initialising pScrn->gamma */
- if (priv->pScrn->gamma.red < GAMMA_MIN ||
- priv->pScrn->gamma.red > GAMMA_MAX ||
- priv->pScrn->gamma.green < GAMMA_MIN ||
- priv->pScrn->gamma.green > GAMMA_MAX ||
- priv->pScrn->gamma.blue < GAMMA_MIN ||
- priv->pScrn->gamma.blue > GAMMA_MAX) {
-
- xf86DrvMsgVerb(priv->pScrn->scrnIndex, X_WARNING, 0,
- "The %s driver didn't call xf86SetGamma() to initialise\n"
- "\tthe gamma values.\n", priv->pScrn->driverName);
- xf86DrvMsgVerb(priv->pScrn->scrnIndex, X_WARNING, 0,
- "PLEASE FIX THE `%s' DRIVER!\n", priv->pScrn->driverName);
- priv->pScrn->gamma.red = 1.0;
- priv->pScrn->gamma.green = 1.0;
- priv->pScrn->gamma.blue = 1.0;
- }
-#endif
-
- RedGamma = 1.0 / (double)priv->pScrn->gamma.red;
- GreenGamma = 1.0 / (double)priv->pScrn->gamma.green;
- BlueGamma = 1.0 / (double)priv->pScrn->gamma.blue;
-
- for(i = 0; i <= elements; i++) {
- if(RedGamma == 1.0)
- priv->gamma[i].red = i;
- else
- priv->gamma[i].red = (CARD16)(pow((double)i/(double)elements,
- RedGamma) * (double)elements + 0.5);
-
- if(GreenGamma == 1.0)
- priv->gamma[i].green = i;
- else
- priv->gamma[i].green = (CARD16)(pow((double)i/(double)elements,
- GreenGamma) * (double)elements + 0.5);
-
- if(BlueGamma == 1.0)
- priv->gamma[i].blue = i;
- else
- priv->gamma[i].blue = (CARD16)(pow((double)i/(double)elements,
- BlueGamma) * (double)elements + 0.5);
- }
-}
-
-
-int
-CMapChangeGamma(
- int index,
- Gamma gamma
-){
- ScrnInfoPtr pScrn = xf86Screens[index];
- ScreenPtr pScreen = pScrn->pScreen;
- CMapColormapPtr pColPriv;
- CMapScreenPtr pScreenPriv;
- CMapLinkPtr pLink;
-
- /* Is this sufficient checking ? */
- if(CMapScreenKey == NULL)
- return BadImplementation;
-
- pScreenPriv = (CMapScreenPtr)dixLookupPrivate(&pScreen->devPrivates,
- CMapScreenKey);
- if(!pScreenPriv)
- return BadImplementation;
-
- if (gamma.red < GAMMA_MIN || gamma.red > GAMMA_MAX ||
- gamma.green < GAMMA_MIN || gamma.green > GAMMA_MAX ||
- gamma.blue < GAMMA_MIN || gamma.blue > GAMMA_MAX)
- return BadValue;
-
- pScrn->gamma.red = gamma.red;
- pScrn->gamma.green = gamma.green;
- pScrn->gamma.blue = gamma.blue;
-
- ComputeGamma(pScreenPriv);
-
- /* mark all colormaps on this screen */
- pLink = pScreenPriv->maps;
- while(pLink) {
- pColPriv = (CMapColormapPtr)dixLookupPrivate(&pLink->cmap->devPrivates,
- CMapColormapKey);
- pColPriv->recalculate = TRUE;
- pLink = pLink->next;
- }
-
- if(miInstalledMaps[pScreen->myNum] &&
- ((pScreenPriv->flags & CMAP_LOAD_EVEN_IF_OFFSCREEN) ||
- pScrn->vtSema || pScreenPriv->isDGAmode)) {
- ColormapPtr pMap = miInstalledMaps[pScreen->myNum];
-
- if (!(pScreenPriv->flags & CMAP_PALETTED_TRUECOLOR) &&
- (pMap->pVisual->class == TrueColor) &&
- CMapColormapUseMax(pMap->pVisual, pScreenPriv)) {
-
- /* if the current map doesn't have a palette look
- for another map to change the gamma on. */
-
- pLink = pScreenPriv->maps;
- while(pLink) {
- if(pLink->cmap->pVisual->class == PseudoColor)
- break;
- pLink = pLink->next;
- }
-
- if(pLink) {
- /* need to trick CMapRefreshColors() into thinking
- this is the currently installed map */
- miInstalledMaps[pScreen->myNum] = pLink->cmap;
- CMapReinstallMap(pLink->cmap);
- miInstalledMaps[pScreen->myNum] = pMap;
- }
- } else
- CMapReinstallMap(pMap);
- }
-
- return Success;
-}
-
-
-static void
-ComputeGammaRamp (
- CMapScreenPtr priv,
- unsigned short *red,
- unsigned short *green,
- unsigned short *blue
-){
- int elements = priv->gammaElements;
- LOCO *entry = priv->gamma;
- int shift = 16 - priv->sigRGBbits;
-
- while(elements--) {
- entry->red = *(red++) >> shift;
- entry->green = *(green++) >> shift;
- entry->blue = *(blue++) >> shift;
- entry++;
- }
-}
-
-_X_EXPORT int
-xf86ChangeGammaRamp(
- ScreenPtr pScreen,
- int size,
- unsigned short *red,
- unsigned short *green,
- unsigned short *blue
-){
- ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
- CMapColormapPtr pColPriv;
- CMapScreenPtr pScreenPriv;
- CMapLinkPtr pLink;
-
- if(CMapScreenKey == NULL)
- return BadImplementation;
-
- pScreenPriv = (CMapScreenPtr)dixLookupPrivate(&pScreen->devPrivates,
- CMapScreenKey);
- if(!pScreenPriv)
- return BadImplementation;
-
- if(pScreenPriv->gammaElements != size)
- return BadValue;
-
- ComputeGammaRamp(pScreenPriv, red, green, blue);
-
- /* mark all colormaps on this screen */
- pLink = pScreenPriv->maps;
- while(pLink) {
- pColPriv = (CMapColormapPtr)dixLookupPrivate(&pLink->cmap->devPrivates,
- CMapColormapKey);
- pColPriv->recalculate = TRUE;
- pLink = pLink->next;
- }
-
- if(miInstalledMaps[pScreen->myNum] &&
- ((pScreenPriv->flags & CMAP_LOAD_EVEN_IF_OFFSCREEN) ||
- pScrn->vtSema || pScreenPriv->isDGAmode)) {
- ColormapPtr pMap = miInstalledMaps[pScreen->myNum];
-
- if (!(pScreenPriv->flags & CMAP_PALETTED_TRUECOLOR) &&
- (pMap->pVisual->class == TrueColor) &&
- CMapColormapUseMax(pMap->pVisual, pScreenPriv)) {
-
- /* if the current map doesn't have a palette look
- for another map to change the gamma on. */
-
- pLink = pScreenPriv->maps;
- while(pLink) {
- if(pLink->cmap->pVisual->class == PseudoColor)
- break;
- pLink = pLink->next;
- }
-
- if(pLink) {
- /* need to trick CMapRefreshColors() into thinking
- this is the currently installed map */
- miInstalledMaps[pScreen->myNum] = pLink->cmap;
- CMapReinstallMap(pLink->cmap);
- miInstalledMaps[pScreen->myNum] = pMap;
- }
- } else
- CMapReinstallMap(pMap);
- }
-
- return Success;
-}
-
-_X_EXPORT int
-xf86GetGammaRampSize(ScreenPtr pScreen)
-{
- CMapScreenPtr pScreenPriv;
-
- if(CMapScreenKey == NULL) return 0;
-
- pScreenPriv = (CMapScreenPtr)dixLookupPrivate(&pScreen->devPrivates,
- CMapScreenKey);
- if(!pScreenPriv) return 0;
-
- return pScreenPriv->gammaElements;
-}
-
-_X_EXPORT int
-xf86GetGammaRamp(
- ScreenPtr pScreen,
- int size,
- unsigned short *red,
- unsigned short *green,
- unsigned short *blue
-){
- CMapScreenPtr pScreenPriv;
- LOCO *entry;
- int shift, sigbits;
-
- if(CMapScreenKey == NULL)
- return BadImplementation;
-
- pScreenPriv = (CMapScreenPtr)dixLookupPrivate(&pScreen->devPrivates,
- CMapScreenKey);
- if(!pScreenPriv)
- return BadImplementation;
-
- if(size > pScreenPriv->gammaElements)
- return BadValue;
-
- entry = pScreenPriv->gamma;
- sigbits = pScreenPriv->sigRGBbits;
-
- while(size--) {
- *red = entry->red << (16 - sigbits);
- *green = entry->green << (16 - sigbits);
- *blue = entry->blue << (16 - sigbits);
- shift = sigbits;
- while(shift < 16) {
- *red |= *red >> shift;
- *green |= *green >> shift;
- *blue |= *blue >> shift;
- shift += sigbits;
- }
- red++; green++; blue++;
- entry++;
- }
-
- return Success;
-}
-
-int
-xf86ChangeGamma(
- ScreenPtr pScreen,
- Gamma gamma
-){
- ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
-
- if(pScrn->ChangeGamma)
- return (*pScrn->ChangeGamma)(pScreen->myNum, gamma);
-
- return Success; /* Success? */
-}
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-09 07:38:46 +0000