1138 lines
36 KiB
C
1138 lines
36 KiB
C
/*
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* Copyright (c) 1998-2001 by The XFree86 Project, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Except as contained in this notice, the name of the copyright holder(s)
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* and author(s) shall not be used in advertising or otherwise to promote
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* the sale, use or other dealings in this Software without prior written
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* authorization from the copyright holder(s) and author(s).
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*/
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#ifdef HAVE_XORG_CONFIG_H
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#include <xorg-config.h>
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#endif
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#if defined(_XOPEN_SOURCE) || defined(__sun) && defined(__SVR4)
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#include <math.h>
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#else
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#define _XOPEN_SOURCE /* to get prototype for pow on some systems */
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#include <math.h>
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#undef _XOPEN_SOURCE
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#endif
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#include <X11/X.h>
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#include "misc.h"
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#include <X11/Xproto.h>
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#include "colormapst.h"
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#include "scrnintstr.h"
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#include "resource.h"
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#include "xf86.h"
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#include "xf86_OSproc.h"
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#include "xf86str.h"
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#include "micmap.h"
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#include "xf86RandR12.h"
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#include "xf86Crtc.h"
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#ifdef XFreeXDGA
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#include <X11/extensions/xf86dgaproto.h>
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#include "dgaproc.h"
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#endif
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#include "xf86cmap.h"
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#define SCREEN_PROLOGUE(pScreen, field) ((pScreen)->field = \
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((CMapScreenPtr)dixLookupPrivate(&(pScreen)->devPrivates, CMapScreenKey))->field)
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#define SCREEN_EPILOGUE(pScreen, field, wrapper)\
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((pScreen)->field = wrapper)
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#define LOAD_PALETTE(pmap) \
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((pmap == GetInstalledmiColormap(pmap->pScreen)) && \
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((pScreenPriv->flags & CMAP_LOAD_EVEN_IF_OFFSCREEN) || \
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xf86ScreenToScrn(pmap->pScreen)->vtSema || pScreenPriv->isDGAmode))
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typedef struct _CMapLink {
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ColormapPtr cmap;
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struct _CMapLink *next;
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} CMapLink, *CMapLinkPtr;
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typedef struct {
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CloseScreenProcPtr CloseScreen;
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CreateColormapProcPtr CreateColormap;
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DestroyColormapProcPtr DestroyColormap;
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InstallColormapProcPtr InstallColormap;
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StoreColorsProcPtr StoreColors;
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Bool (*EnterVT) (ScrnInfoPtr);
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Bool (*SwitchMode) (ScrnInfoPtr, DisplayModePtr);
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int (*SetDGAMode) (ScrnInfoPtr, int, DGADevicePtr);
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xf86ChangeGammaProc *ChangeGamma;
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int maxColors;
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int sigRGBbits;
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int gammaElements;
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LOCO *gamma;
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int *PreAllocIndices;
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CMapLinkPtr maps;
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unsigned int flags;
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Bool isDGAmode;
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} CMapScreenRec, *CMapScreenPtr;
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typedef struct {
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int numColors;
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LOCO *colors;
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Bool recalculate;
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int overscan;
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} CMapColormapRec, *CMapColormapPtr;
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static DevPrivateKeyRec CMapScreenKeyRec;
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#define CMapScreenKeyRegistered dixPrivateKeyRegistered(&CMapScreenKeyRec)
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#define CMapScreenKey (&CMapScreenKeyRec)
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static DevPrivateKeyRec CMapColormapKeyRec;
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#define CMapColormapKey (&CMapColormapKeyRec)
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static void CMapInstallColormap(ColormapPtr);
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static void CMapStoreColors(ColormapPtr, int, xColorItem *);
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static Bool CMapCloseScreen(ScreenPtr);
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static Bool CMapCreateColormap(ColormapPtr);
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static void CMapDestroyColormap(ColormapPtr);
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static Bool CMapEnterVT(ScrnInfoPtr);
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static Bool CMapSwitchMode(ScrnInfoPtr, DisplayModePtr);
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#ifdef XFreeXDGA
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static int CMapSetDGAMode(ScrnInfoPtr, int, DGADevicePtr);
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#endif
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static int CMapChangeGamma(ScrnInfoPtr, Gamma);
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static void ComputeGamma(ScrnInfoPtr, CMapScreenPtr);
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static Bool CMapAllocateColormapPrivate(ColormapPtr);
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static void CMapRefreshColors(ColormapPtr, int, int *);
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static void CMapSetOverscan(ColormapPtr, int, int *);
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static void CMapReinstallMap(ColormapPtr);
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static void CMapUnwrapScreen(ScreenPtr pScreen);
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Bool
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xf86ColormapAllocatePrivates(ScrnInfoPtr pScrn)
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{
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if (!dixRegisterPrivateKey(&CMapScreenKeyRec, PRIVATE_SCREEN, 0))
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return FALSE;
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if (!dixRegisterPrivateKey(&CMapColormapKeyRec, PRIVATE_COLORMAP, 0))
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return FALSE;
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return TRUE;
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}
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Bool
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xf86HandleColormaps(ScreenPtr pScreen,
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int maxColors,
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int sigRGBbits,
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xf86LoadPaletteProc * loadPalette,
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xf86SetOverscanProc * setOverscan, unsigned int flags)
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{
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ScrnInfoPtr pScrn = xf86ScreenToScrn(pScreen);
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ColormapPtr pDefMap = NULL;
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CMapScreenPtr pScreenPriv;
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LOCO *gamma;
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int *indices;
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int elements;
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if (!maxColors || !sigRGBbits ||
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(!loadPalette && !xf86_crtc_supports_gamma(pScrn)))
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return FALSE;
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elements = 1 << sigRGBbits;
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if (!(gamma = xallocarray(elements, sizeof(LOCO))))
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return FALSE;
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if (!(indices = xallocarray(maxColors, sizeof(int)))) {
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free(gamma);
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return FALSE;
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}
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if (!(pScreenPriv = malloc(sizeof(CMapScreenRec)))) {
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free(gamma);
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free(indices);
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return FALSE;
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}
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dixSetPrivate(&pScreen->devPrivates, &CMapScreenKeyRec, pScreenPriv);
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pScreenPriv->CloseScreen = pScreen->CloseScreen;
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pScreenPriv->CreateColormap = pScreen->CreateColormap;
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pScreenPriv->DestroyColormap = pScreen->DestroyColormap;
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pScreenPriv->InstallColormap = pScreen->InstallColormap;
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pScreenPriv->StoreColors = pScreen->StoreColors;
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pScreen->CloseScreen = CMapCloseScreen;
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pScreen->CreateColormap = CMapCreateColormap;
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pScreen->DestroyColormap = CMapDestroyColormap;
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pScreen->InstallColormap = CMapInstallColormap;
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pScreen->StoreColors = CMapStoreColors;
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pScrn->LoadPalette = loadPalette;
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pScrn->SetOverscan = setOverscan;
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pScreenPriv->maxColors = maxColors;
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pScreenPriv->sigRGBbits = sigRGBbits;
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pScreenPriv->gammaElements = elements;
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pScreenPriv->gamma = gamma;
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pScreenPriv->PreAllocIndices = indices;
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pScreenPriv->maps = NULL;
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pScreenPriv->flags = flags;
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pScreenPriv->isDGAmode = FALSE;
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pScreenPriv->EnterVT = pScrn->EnterVT;
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pScreenPriv->SwitchMode = pScrn->SwitchMode;
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pScreenPriv->SetDGAMode = pScrn->SetDGAMode;
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pScreenPriv->ChangeGamma = pScrn->ChangeGamma;
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if (!(flags & CMAP_LOAD_EVEN_IF_OFFSCREEN)) {
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pScrn->EnterVT = CMapEnterVT;
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if ((flags & CMAP_RELOAD_ON_MODE_SWITCH) && pScrn->SwitchMode)
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pScrn->SwitchMode = CMapSwitchMode;
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}
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#ifdef XFreeXDGA
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pScrn->SetDGAMode = CMapSetDGAMode;
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#endif
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pScrn->ChangeGamma = CMapChangeGamma;
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ComputeGamma(pScrn, pScreenPriv);
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/* get the default map */
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dixLookupResourceByType((void **) &pDefMap, pScreen->defColormap,
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RT_COLORMAP, serverClient, DixInstallAccess);
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if (!CMapAllocateColormapPrivate(pDefMap)) {
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CMapUnwrapScreen(pScreen);
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return FALSE;
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}
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if (xf86_crtc_supports_gamma(pScrn)) {
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pScrn->LoadPalette = xf86RandR12LoadPalette;
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if (!xf86RandR12InitGamma(pScrn, elements)) {
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CMapUnwrapScreen(pScreen);
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return FALSE;
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}
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}
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/* Force the initial map to be loaded */
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SetInstalledmiColormap(pScreen, NULL);
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CMapInstallColormap(pDefMap);
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return TRUE;
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}
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/**** Screen functions ****/
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static Bool
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CMapCloseScreen(ScreenPtr pScreen)
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{
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CMapUnwrapScreen(pScreen);
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return (*pScreen->CloseScreen) (pScreen);
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}
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static Bool
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CMapColormapUseMax(VisualPtr pVisual, CMapScreenPtr pScreenPriv)
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{
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if (pVisual->nplanes > 16)
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return TRUE;
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return ((1 << pVisual->nplanes) > pScreenPriv->maxColors);
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}
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static Bool
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CMapAllocateColormapPrivate(ColormapPtr pmap)
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{
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CMapScreenPtr pScreenPriv =
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(CMapScreenPtr) dixLookupPrivate(&pmap->pScreen->devPrivates,
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CMapScreenKey);
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CMapColormapPtr pColPriv;
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CMapLinkPtr pLink;
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int numColors;
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LOCO *colors;
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if (CMapColormapUseMax(pmap->pVisual, pScreenPriv))
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numColors = pmap->pVisual->ColormapEntries;
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else
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numColors = 1 << pmap->pVisual->nplanes;
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if (!(colors = xallocarray(numColors, sizeof(LOCO))))
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return FALSE;
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if (!(pColPriv = malloc(sizeof(CMapColormapRec)))) {
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free(colors);
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return FALSE;
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}
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dixSetPrivate(&pmap->devPrivates, CMapColormapKey, pColPriv);
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pColPriv->numColors = numColors;
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pColPriv->colors = colors;
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pColPriv->recalculate = TRUE;
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pColPriv->overscan = -1;
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/* add map to list */
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pLink = malloc(sizeof(CMapLink));
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if (pLink) {
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pLink->cmap = pmap;
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pLink->next = pScreenPriv->maps;
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pScreenPriv->maps = pLink;
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}
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return TRUE;
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}
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static Bool
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CMapCreateColormap(ColormapPtr pmap)
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{
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ScreenPtr pScreen = pmap->pScreen;
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CMapScreenPtr pScreenPriv =
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(CMapScreenPtr) dixLookupPrivate(&pScreen->devPrivates, CMapScreenKey);
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Bool ret = FALSE;
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pScreen->CreateColormap = pScreenPriv->CreateColormap;
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if ((*pScreen->CreateColormap) (pmap)) {
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if (CMapAllocateColormapPrivate(pmap))
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ret = TRUE;
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}
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pScreen->CreateColormap = CMapCreateColormap;
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return ret;
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}
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static void
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CMapDestroyColormap(ColormapPtr cmap)
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{
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ScreenPtr pScreen = cmap->pScreen;
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CMapScreenPtr pScreenPriv =
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(CMapScreenPtr) dixLookupPrivate(&pScreen->devPrivates, CMapScreenKey);
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CMapColormapPtr pColPriv =
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(CMapColormapPtr) dixLookupPrivate(&cmap->devPrivates, CMapColormapKey);
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CMapLinkPtr prevLink = NULL, pLink = pScreenPriv->maps;
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if (pColPriv) {
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free(pColPriv->colors);
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free(pColPriv);
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}
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/* remove map from list */
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while (pLink) {
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if (pLink->cmap == cmap) {
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if (prevLink)
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prevLink->next = pLink->next;
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else
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pScreenPriv->maps = pLink->next;
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free(pLink);
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break;
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}
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prevLink = pLink;
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pLink = pLink->next;
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}
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if (pScreenPriv->DestroyColormap) {
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pScreen->DestroyColormap = pScreenPriv->DestroyColormap;
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(*pScreen->DestroyColormap) (cmap);
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pScreen->DestroyColormap = CMapDestroyColormap;
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}
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}
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static void
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CMapStoreColors(ColormapPtr pmap, int ndef, xColorItem * pdefs)
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{
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ScreenPtr pScreen = pmap->pScreen;
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VisualPtr pVisual = pmap->pVisual;
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CMapScreenPtr pScreenPriv =
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(CMapScreenPtr) dixLookupPrivate(&pScreen->devPrivates, CMapScreenKey);
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int *indices = pScreenPriv->PreAllocIndices;
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int num = ndef;
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/* At the moment this isn't necessary since there's nobody below us */
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pScreen->StoreColors = pScreenPriv->StoreColors;
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(*pScreen->StoreColors) (pmap, ndef, pdefs);
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pScreen->StoreColors = CMapStoreColors;
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/* should never get here for these */
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if ((pVisual->class == TrueColor) ||
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(pVisual->class == StaticColor) || (pVisual->class == StaticGray))
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return;
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if (pVisual->class == DirectColor) {
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CMapColormapPtr pColPriv =
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(CMapColormapPtr) dixLookupPrivate(&pmap->devPrivates,
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CMapColormapKey);
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int i;
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if (CMapColormapUseMax(pVisual, pScreenPriv)) {
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int index;
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num = 0;
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while (ndef--) {
|
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if (pdefs[ndef].flags & DoRed) {
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index = (pdefs[ndef].pixel & pVisual->redMask) >>
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pVisual->offsetRed;
|
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i = num;
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while (i--)
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if (indices[i] == index)
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break;
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if (i == -1)
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indices[num++] = index;
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}
|
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if (pdefs[ndef].flags & DoGreen) {
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index = (pdefs[ndef].pixel & pVisual->greenMask) >>
|
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pVisual->offsetGreen;
|
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i = num;
|
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while (i--)
|
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if (indices[i] == index)
|
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break;
|
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if (i == -1)
|
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indices[num++] = index;
|
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}
|
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if (pdefs[ndef].flags & DoBlue) {
|
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index = (pdefs[ndef].pixel & pVisual->blueMask) >>
|
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pVisual->offsetBlue;
|
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i = num;
|
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while (i--)
|
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if (indices[i] == index)
|
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break;
|
||
if (i == -1)
|
||
indices[num++] = index;
|
||
}
|
||
}
|
||
|
||
}
|
||
else {
|
||
/* not really as overkill as it seems */
|
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num = pColPriv->numColors;
|
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for (i = 0; i < pColPriv->numColors; i++)
|
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indices[i] = i;
|
||
}
|
||
}
|
||
else {
|
||
while (ndef--)
|
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indices[ndef] = pdefs[ndef].pixel;
|
||
}
|
||
|
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CMapRefreshColors(pmap, num, indices);
|
||
}
|
||
|
||
static void
|
||
CMapInstallColormap(ColormapPtr pmap)
|
||
{
|
||
ScreenPtr pScreen = pmap->pScreen;
|
||
CMapScreenPtr pScreenPriv =
|
||
(CMapScreenPtr) dixLookupPrivate(&pScreen->devPrivates, CMapScreenKey);
|
||
|
||
if (pmap == GetInstalledmiColormap(pmap->pScreen))
|
||
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 (GetInstalledmiColormap(pmap->pScreen))
|
||
pmap = GetInstalledmiColormap(pmap->pScreen);
|
||
|
||
if (!(pScreenPriv->flags & CMAP_PALETTED_TRUECOLOR) &&
|
||
(pmap->pVisual->class == TrueColor) &&
|
||
CMapColormapUseMax(pmap->pVisual, pScreenPriv))
|
||
return;
|
||
|
||
if (LOAD_PALETTE(pmap))
|
||
CMapReinstallMap(pmap);
|
||
}
|
||
|
||
/**** ScrnInfoRec functions ****/
|
||
|
||
static Bool
|
||
CMapEnterVT(ScrnInfoPtr pScrn)
|
||
{
|
||
ScreenPtr pScreen = xf86ScrnToScreen(pScrn);
|
||
Bool ret;
|
||
CMapScreenPtr pScreenPriv =
|
||
(CMapScreenPtr) dixLookupPrivate(&pScreen->devPrivates, CMapScreenKey);
|
||
|
||
pScrn->EnterVT = pScreenPriv->EnterVT;
|
||
ret = (*pScreenPriv->EnterVT) (pScrn);
|
||
pScreenPriv->EnterVT = pScrn->EnterVT;
|
||
pScrn->EnterVT = CMapEnterVT;
|
||
if (ret) {
|
||
if (GetInstalledmiColormap(pScreen))
|
||
CMapReinstallMap(GetInstalledmiColormap(pScreen));
|
||
return TRUE;
|
||
}
|
||
return FALSE;
|
||
}
|
||
|
||
static Bool
|
||
CMapSwitchMode(ScrnInfoPtr pScrn, DisplayModePtr mode)
|
||
{
|
||
ScreenPtr pScreen = xf86ScrnToScreen(pScrn);
|
||
CMapScreenPtr pScreenPriv =
|
||
(CMapScreenPtr) dixLookupPrivate(&pScreen->devPrivates, CMapScreenKey);
|
||
|
||
if ((*pScreenPriv->SwitchMode) (pScrn, mode)) {
|
||
if (GetInstalledmiColormap(pScreen))
|
||
CMapReinstallMap(GetInstalledmiColormap(pScreen));
|
||
return TRUE;
|
||
}
|
||
return FALSE;
|
||
}
|
||
|
||
#ifdef XFreeXDGA
|
||
static int
|
||
CMapSetDGAMode(ScrnInfoPtr pScrn, int num, DGADevicePtr dev)
|
||
{
|
||
ScreenPtr pScreen = xf86ScrnToScreen(pScrn);
|
||
CMapScreenPtr pScreenPriv =
|
||
(CMapScreenPtr) dixLookupPrivate(&pScreen->devPrivates, CMapScreenKey);
|
||
int ret;
|
||
|
||
ret = (*pScreenPriv->SetDGAMode) (pScrn, num, dev);
|
||
|
||
pScreenPriv->isDGAmode = DGAActive(pScrn->scrnIndex);
|
||
|
||
if (!pScreenPriv->isDGAmode && GetInstalledmiColormap(pScreen)
|
||
&& xf86ScreenToScrn(pScreen)->vtSema)
|
||
CMapReinstallMap(GetInstalledmiColormap(pScreen));
|
||
|
||
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 = xf86ScreenToScrn(pmap->pScreen);
|
||
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 = xf86ScreenToScrn(pmap->pScreen);
|
||
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; i++) {
|
||
index = (i + 1) * 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))
|
||
(*pScrn->LoadPalette) (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 = xf86ScreenToScrn(pmap->pScreen);
|
||
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)) {
|
||
#ifdef DEBUGOVERSCAN
|
||
ErrorF("SetOverscan() called from CmapSetOverscan\n");
|
||
#endif
|
||
pScrn->SetOverscan(pScrn, overscan);
|
||
}
|
||
}
|
||
}
|
||
|
||
static void
|
||
CMapUnwrapScreen(ScreenPtr pScreen)
|
||
{
|
||
CMapScreenPtr pScreenPriv =
|
||
(CMapScreenPtr) dixLookupPrivate(&pScreen->devPrivates, CMapScreenKey);
|
||
ScrnInfoPtr pScrn = xf86ScreenToScrn(pScreen);
|
||
|
||
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;
|
||
pScrn->ChangeGamma = pScreenPriv->ChangeGamma;
|
||
|
||
free(pScreenPriv->gamma);
|
||
free(pScreenPriv->PreAllocIndices);
|
||
free(pScreenPriv);
|
||
}
|
||
|
||
static void
|
||
ComputeGamma(ScrnInfoPtr pScrn, 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 (pScrn->gamma.red < GAMMA_MIN || pScrn->gamma.red > GAMMA_MAX ||
|
||
pScrn->gamma.green < GAMMA_MIN || pScrn->gamma.green > GAMMA_MAX ||
|
||
pScrn->gamma.blue < GAMMA_MIN || pScrn->gamma.blue > GAMMA_MAX) {
|
||
|
||
xf86DrvMsgVerb(pScrn->scrnIndex, X_WARNING, 0,
|
||
"The %s driver didn't call xf86SetGamma() to initialise\n"
|
||
"\tthe gamma values.\n", pScrn->driverName);
|
||
xf86DrvMsgVerb(pScrn->scrnIndex, X_WARNING, 0,
|
||
"PLEASE FIX THE `%s' DRIVER!\n",
|
||
pScrn->driverName);
|
||
pScrn->gamma.red = 1.0;
|
||
pScrn->gamma.green = 1.0;
|
||
pScrn->gamma.blue = 1.0;
|
||
}
|
||
#endif
|
||
|
||
RedGamma = 1.0 / (double) pScrn->gamma.red;
|
||
GreenGamma = 1.0 / (double) pScrn->gamma.green;
|
||
BlueGamma = 1.0 / (double) 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(ScrnInfoPtr pScrn, Gamma gamma)
|
||
{
|
||
int ret = Success;
|
||
ScreenPtr pScreen = xf86ScrnToScreen(pScrn);
|
||
CMapColormapPtr pColPriv;
|
||
CMapScreenPtr pScreenPriv;
|
||
CMapLinkPtr pLink;
|
||
|
||
/* Is this sufficient checking ? */
|
||
if (!CMapScreenKeyRegistered)
|
||
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(pScrn, 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 (GetInstalledmiColormap(pScreen) &&
|
||
((pScreenPriv->flags & CMAP_LOAD_EVEN_IF_OFFSCREEN) ||
|
||
pScrn->vtSema || pScreenPriv->isDGAmode)) {
|
||
ColormapPtr pMap = GetInstalledmiColormap(pScreen);
|
||
|
||
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 */
|
||
SetInstalledmiColormap(pScreen, pLink->cmap);
|
||
CMapReinstallMap(pLink->cmap);
|
||
SetInstalledmiColormap(pScreen, pMap);
|
||
}
|
||
}
|
||
else
|
||
CMapReinstallMap(pMap);
|
||
}
|
||
|
||
pScrn->ChangeGamma = pScreenPriv->ChangeGamma;
|
||
if (pScrn->ChangeGamma)
|
||
ret = pScrn->ChangeGamma(pScrn, gamma);
|
||
pScrn->ChangeGamma = CMapChangeGamma;
|
||
|
||
return ret;
|
||
}
|
||
|
||
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++;
|
||
}
|
||
}
|
||
|
||
int
|
||
xf86ChangeGammaRamp(ScreenPtr pScreen,
|
||
int size,
|
||
unsigned short *red,
|
||
unsigned short *green, unsigned short *blue)
|
||
{
|
||
ScrnInfoPtr pScrn = xf86ScreenToScrn(pScreen);
|
||
CMapColormapPtr pColPriv;
|
||
CMapScreenPtr pScreenPriv;
|
||
CMapLinkPtr pLink;
|
||
|
||
if (!CMapScreenKeyRegistered)
|
||
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 (GetInstalledmiColormap(pScreen) &&
|
||
((pScreenPriv->flags & CMAP_LOAD_EVEN_IF_OFFSCREEN) ||
|
||
pScrn->vtSema || pScreenPriv->isDGAmode)) {
|
||
ColormapPtr pMap = GetInstalledmiColormap(pScreen);
|
||
|
||
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 */
|
||
SetInstalledmiColormap(pScreen, pLink->cmap);
|
||
CMapReinstallMap(pLink->cmap);
|
||
SetInstalledmiColormap(pScreen, pMap);
|
||
}
|
||
}
|
||
else
|
||
CMapReinstallMap(pMap);
|
||
}
|
||
|
||
return Success;
|
||
}
|
||
|
||
int
|
||
xf86GetGammaRampSize(ScreenPtr pScreen)
|
||
{
|
||
CMapScreenPtr pScreenPriv;
|
||
|
||
if (!CMapScreenKeyRegistered)
|
||
return 0;
|
||
|
||
pScreenPriv = (CMapScreenPtr) dixLookupPrivate(&pScreen->devPrivates,
|
||
CMapScreenKey);
|
||
if (!pScreenPriv)
|
||
return 0;
|
||
|
||
return pScreenPriv->gammaElements;
|
||
}
|
||
|
||
int
|
||
xf86GetGammaRamp(ScreenPtr pScreen,
|
||
int size,
|
||
unsigned short *red,
|
||
unsigned short *green, unsigned short *blue)
|
||
{
|
||
CMapScreenPtr pScreenPriv;
|
||
LOCO *entry;
|
||
int shift, sigbits;
|
||
|
||
if (!CMapScreenKeyRegistered)
|
||
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 = xf86ScreenToScrn(pScreen);
|
||
|
||
if (pScrn->ChangeGamma)
|
||
return (*pScrn->ChangeGamma) (pScrn, gamma);
|
||
|
||
return BadImplementation;
|
||
}
|