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authormarha <marha@users.sourceforge.net>2012-03-23 10:05:55 +0100
committermarha <marha@users.sourceforge.net>2012-03-23 10:05:55 +0100
commit0f834b91a4768673833ab4917e87d86c237bb1a6 (patch)
tree363489504ed4b2d360259b8de4c9e392918e5d02 /xorg-server/render/glyph.c
parentfc72edebf875378459368c5383d9023730cbca54 (diff)
downloadvcxsrv-0f834b91a4768673833ab4917e87d86c237bb1a6.tar.gz
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libX11 xserver fontconfig mesa pixman xkbcomp xkeyboard-config git update
23 Mar 2012
Diffstat (limited to 'xorg-server/render/glyph.c')
-rw-r--r--xorg-server/render/glyph.c1434
1 files changed, 686 insertions, 748 deletions
diff --git a/xorg-server/render/glyph.c b/xorg-server/render/glyph.c
index ab20da625..a143e9eb5 100644
--- a/xorg-server/render/glyph.c
+++ b/xorg-server/render/glyph.c
@@ -1,748 +1,686 @@
-/*
- *
- * Copyright © 2000 SuSE, Inc.
- *
- * Permission to use, copy, modify, distribute, and sell this software and its
- * documentation for any purpose is hereby granted without fee, provided that
- * the above copyright notice appear in all copies and that both that
- * copyright notice and this permission notice appear in supporting
- * documentation, and that the name of SuSE not be used in advertising or
- * publicity pertaining to distribution of the software without specific,
- * written prior permission. SuSE makes no representations about the
- * suitability of this software for any purpose. It is provided "as is"
- * without express or implied warranty.
- *
- * SuSE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL SuSE
- * BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
- * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
- * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- *
- * Author: Keith Packard, SuSE, Inc.
- */
-
-#ifdef HAVE_DIX_CONFIG_H
-#include <dix-config.h>
-#endif
-
-#include "xsha1.h"
-
-#include "misc.h"
-#include "scrnintstr.h"
-#include "os.h"
-#include "regionstr.h"
-#include "validate.h"
-#include "windowstr.h"
-#include "input.h"
-#include "resource.h"
-#include "colormapst.h"
-#include "cursorstr.h"
-#include "dixstruct.h"
-#include "gcstruct.h"
-#include "servermd.h"
-#include "picturestr.h"
-#include "glyphstr.h"
-#include "mipict.h"
-
-/*
- * From Knuth -- a good choice for hash/rehash values is p, p-2 where
- * p and p-2 are both prime. These tables are sized to have an extra 10%
- * free to avoid exponential performance degradation as the hash table fills
- */
-static GlyphHashSetRec glyphHashSets[] = {
- { 32, 43, 41 },
- { 64, 73, 71 },
- { 128, 151, 149 },
- { 256, 283, 281 },
- { 512, 571, 569 },
- { 1024, 1153, 1151 },
- { 2048, 2269, 2267 },
- { 4096, 4519, 4517 },
- { 8192, 9013, 9011 },
- { 16384, 18043, 18041 },
- { 32768, 36109, 36107 },
- { 65536, 72091, 72089 },
- { 131072, 144409, 144407 },
- { 262144, 288361, 288359 },
- { 524288, 576883, 576881 },
- { 1048576, 1153459, 1153457 },
- { 2097152, 2307163, 2307161 },
- { 4194304, 4613893, 4613891 },
- { 8388608, 9227641, 9227639 },
- { 16777216, 18455029, 18455027 },
- { 33554432, 36911011, 36911009 },
- { 67108864, 73819861, 73819859 },
- { 134217728, 147639589, 147639587 },
- { 268435456, 295279081, 295279079 },
- { 536870912, 590559793, 590559791 }
-};
-
-#define NGLYPHHASHSETS (sizeof(glyphHashSets)/sizeof(glyphHashSets[0]))
-
-static const CARD8 glyphDepths[GlyphFormatNum] = { 1, 4, 8, 16, 32 };
-
-static GlyphHashRec globalGlyphs[GlyphFormatNum];
-
-void
-GlyphUninit (ScreenPtr pScreen)
-{
- PictureScreenPtr ps = GetPictureScreen (pScreen);
- GlyphPtr glyph;
- int fdepth, i;
- int scrno = pScreen->myNum;
-
- for (fdepth = 0; fdepth < GlyphFormatNum; fdepth++)
- {
- if (!globalGlyphs[fdepth].hashSet)
- continue;
-
- for (i = 0; i < globalGlyphs[fdepth].hashSet->size; i++)
- {
- glyph = globalGlyphs[fdepth].table[i].glyph;
- if (glyph && glyph != DeletedGlyph)
- {
- if (GlyphPicture(glyph)[scrno])
- {
- FreePicture ((pointer) GlyphPicture (glyph)[scrno], 0);
- GlyphPicture(glyph)[scrno] = NULL;
- }
- (*ps->UnrealizeGlyph) (pScreen, glyph);
- }
- }
- }
-}
-
-GlyphHashSetPtr
-FindGlyphHashSet (CARD32 filled)
-{
- int i;
-
- for (i = 0; i < NGLYPHHASHSETS; i++)
- if (glyphHashSets[i].entries >= filled)
- return &glyphHashSets[i];
- return 0;
-}
-
-GlyphRefPtr
-FindGlyphRef (GlyphHashPtr hash,
- CARD32 signature,
- Bool match,
- unsigned char sha1[20])
-{
- CARD32 elt, step, s;
- GlyphPtr glyph;
- GlyphRefPtr table, gr, del;
- CARD32 tableSize = hash->hashSet->size;
-
- table = hash->table;
- elt = signature % tableSize;
- step = 0;
- del = 0;
- for (;;)
- {
- gr = &table[elt];
- s = gr->signature;
- glyph = gr->glyph;
- if (!glyph)
- {
- if (del)
- gr = del;
- break;
- }
- if (glyph == DeletedGlyph)
- {
- if (!del)
- del = gr;
- else if (gr == del)
- break;
- }
- else if (s == signature &&
- (!match ||
- memcmp (glyph->sha1, sha1, 20) == 0))
- {
- break;
- }
- if (!step)
- {
- step = signature % hash->hashSet->rehash;
- if (!step)
- step = 1;
- }
- elt += step;
- if (elt >= tableSize)
- elt -= tableSize;
- }
- return gr;
-}
-
-int
-HashGlyph (xGlyphInfo *gi,
- CARD8 *bits,
- unsigned long size,
- unsigned char sha1[20])
-{
- void *ctx = x_sha1_init();
- int success;
-
- if (!ctx)
- return BadAlloc;
-
- success = x_sha1_update(ctx, gi, sizeof(xGlyphInfo));
- if (!success)
- return BadAlloc;
- success = x_sha1_update(ctx, bits, size);
- if (!success)
- return BadAlloc;
- success = x_sha1_final(ctx, sha1);
- if (!success)
- return BadAlloc;
- return Success;
-}
-
-GlyphPtr
-FindGlyphByHash (unsigned char sha1[20], int format)
-{
- GlyphRefPtr gr;
- CARD32 signature = *(CARD32 *) sha1;
-
- if (!globalGlyphs[format].hashSet)
- return NULL;
-
- gr = FindGlyphRef (&globalGlyphs[format],
- signature, TRUE, sha1);
-
- if (gr->glyph && gr->glyph != DeletedGlyph)
- return gr->glyph;
- else
- return NULL;
-}
-
-#ifdef CHECK_DUPLICATES
-void
-DuplicateRef (GlyphPtr glyph, char *where)
-{
- ErrorF ("Duplicate Glyph 0x%x from %s\n", glyph, where);
-}
-
-void
-CheckDuplicates (GlyphHashPtr hash, char *where)
-{
- GlyphPtr g;
- int i, j;
-
- for (i = 0; i < hash->hashSet->size; i++)
- {
- g = hash->table[i].glyph;
- if (!g || g == DeletedGlyph)
- continue;
- for (j = i + 1; j < hash->hashSet->size; j++)
- if (hash->table[j].glyph == g)
- DuplicateRef (g, where);
- }
-}
-#else
-#define CheckDuplicates(a,b)
-#define DuplicateRef(a,b)
-#endif
-
-static void
-FreeGlyphPicture(GlyphPtr glyph)
-{
- PictureScreenPtr ps;
- int i;
-
- for (i = 0; i < screenInfo.numScreens; i++)
- {
- ScreenPtr pScreen = screenInfo.screens[i];
-
- if (GlyphPicture(glyph)[i])
- FreePicture ((pointer) GlyphPicture (glyph)[i], 0);
-
- ps = GetPictureScreenIfSet (pScreen);
- if (ps)
- (*ps->UnrealizeGlyph) (pScreen, glyph);
- }
-}
-
-
-void
-FreeGlyph (GlyphPtr glyph, int format)
-{
- CheckDuplicates (&globalGlyphs[format], "FreeGlyph");
- if (--glyph->refcnt == 0)
- {
- GlyphRefPtr gr;
- int i;
- int first;
- CARD32 signature;
-
- first = -1;
- for (i = 0; i < globalGlyphs[format].hashSet->size; i++)
- if (globalGlyphs[format].table[i].glyph == glyph)
- {
- if (first != -1)
- DuplicateRef (glyph, "FreeGlyph check");
- first = i;
- }
-
- signature = *(CARD32 *) glyph->sha1;
- gr = FindGlyphRef (&globalGlyphs[format], signature,
- TRUE, glyph->sha1);
- if (gr - globalGlyphs[format].table != first)
- DuplicateRef (glyph, "Found wrong one");
- if (gr->glyph && gr->glyph != DeletedGlyph)
- {
- gr->glyph = DeletedGlyph;
- gr->signature = 0;
- globalGlyphs[format].tableEntries--;
- }
-
- FreeGlyphPicture(glyph);
- dixFreeObjectWithPrivates(glyph, PRIVATE_GLYPH);
- }
-}
-
-void
-AddGlyph (GlyphSetPtr glyphSet, GlyphPtr glyph, Glyph id)
-{
- GlyphRefPtr gr;
- CARD32 signature;
-
- CheckDuplicates (&globalGlyphs[glyphSet->fdepth], "AddGlyph top global");
- /* Locate existing matching glyph */
- signature = *(CARD32 *) glyph->sha1;
- gr = FindGlyphRef (&globalGlyphs[glyphSet->fdepth], signature,
- TRUE, glyph->sha1);
- if (gr->glyph && gr->glyph != DeletedGlyph && gr->glyph != glyph)
- {
- FreeGlyphPicture(glyph);
- dixFreeObjectWithPrivates(glyph, PRIVATE_GLYPH);
- glyph = gr->glyph;
- }
- else if (gr->glyph != glyph)
- {
- gr->glyph = glyph;
- gr->signature = signature;
- globalGlyphs[glyphSet->fdepth].tableEntries++;
- }
-
- /* Insert/replace glyphset value */
- gr = FindGlyphRef (&glyphSet->hash, id, FALSE, 0);
- ++glyph->refcnt;
- if (gr->glyph && gr->glyph != DeletedGlyph)
- FreeGlyph (gr->glyph, glyphSet->fdepth);
- else
- glyphSet->hash.tableEntries++;
- gr->glyph = glyph;
- gr->signature = id;
- CheckDuplicates (&globalGlyphs[glyphSet->fdepth], "AddGlyph bottom");
-}
-
-Bool
-DeleteGlyph (GlyphSetPtr glyphSet, Glyph id)
-{
- GlyphRefPtr gr;
- GlyphPtr glyph;
-
- gr = FindGlyphRef (&glyphSet->hash, id, FALSE, 0);
- glyph = gr->glyph;
- if (glyph && glyph != DeletedGlyph)
- {
- gr->glyph = DeletedGlyph;
- glyphSet->hash.tableEntries--;
- FreeGlyph (glyph, glyphSet->fdepth);
- return TRUE;
- }
- return FALSE;
-}
-
-GlyphPtr
-FindGlyph (GlyphSetPtr glyphSet, Glyph id)
-{
- GlyphPtr glyph;
-
- glyph = FindGlyphRef (&glyphSet->hash, id, FALSE, 0)->glyph;
- if (glyph == DeletedGlyph)
- glyph = 0;
- return glyph;
-}
-
-GlyphPtr
-AllocateGlyph (xGlyphInfo *gi, int fdepth)
-{
- PictureScreenPtr ps;
- int size;
- GlyphPtr glyph;
- int i;
- int head_size;
-
- head_size = sizeof (GlyphRec) + screenInfo.numScreens * sizeof (PicturePtr);
- size = (head_size + dixPrivatesSize(PRIVATE_GLYPH));
- glyph = (GlyphPtr) malloc (size);
- if (!glyph)
- return 0;
- glyph->refcnt = 0;
- glyph->size = size + sizeof (xGlyphInfo);
- glyph->info = *gi;
- dixInitPrivates(glyph, (char *) glyph + head_size, PRIVATE_GLYPH);
-
- for (i = 0; i < screenInfo.numScreens; i++)
- {
- GlyphPicture(glyph)[i] = NULL;
- ps = GetPictureScreenIfSet (screenInfo.screens[i]);
-
- if (ps)
- {
- if (!(*ps->RealizeGlyph) (screenInfo.screens[i], glyph))
- goto bail;
- }
- }
-
- return glyph;
-
-bail:
- while (i--)
- {
- ps = GetPictureScreenIfSet (screenInfo.screens[i]);
- if (ps)
- (*ps->UnrealizeGlyph) (screenInfo.screens[i], glyph);
- }
-
- dixFreeObjectWithPrivates(glyph, PRIVATE_GLYPH);
- return 0;
-}
-
-Bool
-AllocateGlyphHash (GlyphHashPtr hash, GlyphHashSetPtr hashSet)
-{
- hash->table = calloc(hashSet->size, sizeof (GlyphRefRec));
- if (!hash->table)
- return FALSE;
- hash->hashSet = hashSet;
- hash->tableEntries = 0;
- return TRUE;
-}
-
-Bool
-ResizeGlyphHash (GlyphHashPtr hash, CARD32 change, Bool global)
-{
- CARD32 tableEntries;
- GlyphHashSetPtr hashSet;
- GlyphHashRec newHash;
- GlyphRefPtr gr;
- GlyphPtr glyph;
- int i;
- int oldSize;
- CARD32 s;
-
- tableEntries = hash->tableEntries + change;
- hashSet = FindGlyphHashSet (tableEntries);
- if (hashSet == hash->hashSet)
- return TRUE;
- if (global)
- CheckDuplicates (hash, "ResizeGlyphHash top");
- if (!AllocateGlyphHash (&newHash, hashSet))
- return FALSE;
- if (hash->table)
- {
- oldSize = hash->hashSet->size;
- for (i = 0; i < oldSize; i++)
- {
- glyph = hash->table[i].glyph;
- if (glyph && glyph != DeletedGlyph)
- {
- s = hash->table[i].signature;
- gr = FindGlyphRef (&newHash, s, global, glyph->sha1);
- gr->signature = s;
- gr->glyph = glyph;
- ++newHash.tableEntries;
- }
- }
- free(hash->table);
- }
- *hash = newHash;
- if (global)
- CheckDuplicates (hash, "ResizeGlyphHash bottom");
- return TRUE;
-}
-
-Bool
-ResizeGlyphSet (GlyphSetPtr glyphSet, CARD32 change)
-{
- return (ResizeGlyphHash (&glyphSet->hash, change, FALSE) &&
- ResizeGlyphHash (&globalGlyphs[glyphSet->fdepth], change, TRUE));
-}
-
-GlyphSetPtr
-AllocateGlyphSet (int fdepth, PictFormatPtr format)
-{
- GlyphSetPtr glyphSet;
-
- if (!globalGlyphs[fdepth].hashSet)
- {
- if (!AllocateGlyphHash (&globalGlyphs[fdepth], &glyphHashSets[0]))
- return FALSE;
- }
-
- glyphSet = dixAllocateObjectWithPrivates(GlyphSetRec, PRIVATE_GLYPHSET);
- if (!glyphSet)
- return FALSE;
-
- if (!AllocateGlyphHash (&glyphSet->hash, &glyphHashSets[0]))
- {
- free(glyphSet);
- return FALSE;
- }
- glyphSet->refcnt = 1;
- glyphSet->fdepth = fdepth;
- glyphSet->format = format;
- return glyphSet;
-}
-
-int
-FreeGlyphSet (pointer value,
- XID gid)
-{
- GlyphSetPtr glyphSet = (GlyphSetPtr) value;
-
- if (--glyphSet->refcnt == 0)
- {
- CARD32 i, tableSize = glyphSet->hash.hashSet->size;
- GlyphRefPtr table = glyphSet->hash.table;
- GlyphPtr glyph;
-
- for (i = 0; i < tableSize; i++)
- {
- glyph = table[i].glyph;
- if (glyph && glyph != DeletedGlyph)
- FreeGlyph (glyph, glyphSet->fdepth);
- }
- if (!globalGlyphs[glyphSet->fdepth].tableEntries)
- {
- free(globalGlyphs[glyphSet->fdepth].table);
- globalGlyphs[glyphSet->fdepth].table = 0;
- globalGlyphs[glyphSet->fdepth].hashSet = 0;
- }
- else
- ResizeGlyphHash (&globalGlyphs[glyphSet->fdepth], 0, TRUE);
- free(table);
- dixFreeObjectWithPrivates(glyphSet, PRIVATE_GLYPHSET);
- }
- return Success;
-}
-
-static void
-GlyphExtents (int nlist,
- GlyphListPtr list,
- GlyphPtr *glyphs,
- BoxPtr extents)
-{
- int x1, x2, y1, y2;
- int n;
- GlyphPtr glyph;
- int x, y;
-
- x = 0;
- y = 0;
- extents->x1 = MAXSHORT;
- extents->x2 = MINSHORT;
- extents->y1 = MAXSHORT;
- extents->y2 = MINSHORT;
- while (nlist--)
- {
- x += list->xOff;
- y += list->yOff;
- n = list->len;
- list++;
- while (n--)
- {
- glyph = *glyphs++;
- x1 = x - glyph->info.x;
- if (x1 < MINSHORT)
- x1 = MINSHORT;
- y1 = y - glyph->info.y;
- if (y1 < MINSHORT)
- y1 = MINSHORT;
- x2 = x1 + glyph->info.width;
- if (x2 > MAXSHORT)
- x2 = MAXSHORT;
- y2 = y1 + glyph->info.height;
- if (y2 > MAXSHORT)
- y2 = MAXSHORT;
- if (x1 < extents->x1)
- extents->x1 = x1;
- if (x2 > extents->x2)
- extents->x2 = x2;
- if (y1 < extents->y1)
- extents->y1 = y1;
- if (y2 > extents->y2)
- extents->y2 = y2;
- x += glyph->info.xOff;
- y += glyph->info.yOff;
- }
- }
-}
-
-#define NeedsComponent(f) (PICT_FORMAT_A(f) != 0 && PICT_FORMAT_RGB(f) != 0)
-
-void
-CompositeGlyphs (CARD8 op,
- PicturePtr pSrc,
- PicturePtr pDst,
- PictFormatPtr maskFormat,
- INT16 xSrc,
- INT16 ySrc,
- int nlist,
- GlyphListPtr lists,
- GlyphPtr *glyphs)
-{
- PictureScreenPtr ps = GetPictureScreen(pDst->pDrawable->pScreen);
-
- ValidatePicture (pSrc);
- ValidatePicture (pDst);
- (*ps->Glyphs) (op, pSrc, pDst, maskFormat, xSrc, ySrc, nlist, lists, glyphs);
-}
-
-Bool
-miRealizeGlyph (ScreenPtr pScreen,
- GlyphPtr glyph)
-{
- return TRUE;
-}
-
-void
-miUnrealizeGlyph (ScreenPtr pScreen,
- GlyphPtr glyph)
-{
-}
-
-void
-miGlyphs (CARD8 op,
- PicturePtr pSrc,
- PicturePtr pDst,
- PictFormatPtr maskFormat,
- INT16 xSrc,
- INT16 ySrc,
- int nlist,
- GlyphListPtr list,
- GlyphPtr *glyphs)
-{
- PicturePtr pPicture;
- PixmapPtr pMaskPixmap = 0;
- PicturePtr pMask;
- ScreenPtr pScreen = pDst->pDrawable->pScreen;
- int width = 0, height = 0;
- int x, y;
- int xDst = list->xOff, yDst = list->yOff;
- int n;
- GlyphPtr glyph;
- int error;
- BoxRec extents = {0, 0, 0, 0};
- CARD32 component_alpha;
-
- if (maskFormat)
- {
- GCPtr pGC;
- xRectangle rect;
-
- GlyphExtents (nlist, list, glyphs, &extents);
-
- if (extents.x2 <= extents.x1 || extents.y2 <= extents.y1)
- return;
- width = extents.x2 - extents.x1;
- height = extents.y2 - extents.y1;
- pMaskPixmap = (*pScreen->CreatePixmap) (pScreen, width, height,
- maskFormat->depth,
- CREATE_PIXMAP_USAGE_SCRATCH);
- if (!pMaskPixmap)
- return;
- component_alpha = NeedsComponent(maskFormat->format);
- pMask = CreatePicture (0, &pMaskPixmap->drawable,
- maskFormat, CPComponentAlpha, &component_alpha,
- serverClient, &error);
- if (!pMask)
- {
- (*pScreen->DestroyPixmap) (pMaskPixmap);
- return;
- }
- pGC = GetScratchGC (pMaskPixmap->drawable.depth, pScreen);
- ValidateGC (&pMaskPixmap->drawable, pGC);
- rect.x = 0;
- rect.y = 0;
- rect.width = width;
- rect.height = height;
- (*pGC->ops->PolyFillRect) (&pMaskPixmap->drawable, pGC, 1, &rect);
- FreeScratchGC (pGC);
- x = -extents.x1;
- y = -extents.y1;
- }
- else
- {
- pMask = pDst;
- x = 0;
- y = 0;
- }
- while (nlist--)
- {
- x += list->xOff;
- y += list->yOff;
- n = list->len;
- while (n--)
- {
- glyph = *glyphs++;
- pPicture = GlyphPicture (glyph)[pScreen->myNum];
-
- if (pPicture)
- {
- if (maskFormat)
- {
- CompositePicture (PictOpAdd,
- pPicture,
- None,
- pMask,
- 0, 0,
- 0, 0,
- x - glyph->info.x,
- y - glyph->info.y,
- glyph->info.width,
- glyph->info.height);
- }
- else
- {
- CompositePicture (op,
- pSrc,
- pPicture,
- pDst,
- xSrc + (x - glyph->info.x) - xDst,
- ySrc + (y - glyph->info.y) - yDst,
- 0, 0,
- x - glyph->info.x,
- y - glyph->info.y,
- glyph->info.width,
- glyph->info.height);
- }
- }
-
- x += glyph->info.xOff;
- y += glyph->info.yOff;
- }
- list++;
- }
- if (maskFormat)
- {
- x = extents.x1;
- y = extents.y1;
- CompositePicture (op,
- pSrc,
- pMask,
- pDst,
- xSrc + x - xDst,
- ySrc + y - yDst,
- 0, 0,
- x, y,
- width, height);
- FreePicture ((pointer) pMask, (XID) 0);
- (*pScreen->DestroyPixmap) (pMaskPixmap);
- }
-}
+/*
+ *
+ * Copyright © 2000 SuSE, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of SuSE not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission. SuSE makes no representations about the
+ * suitability of this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ *
+ * SuSE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL SuSE
+ * BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Author: Keith Packard, SuSE, Inc.
+ */
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include "xsha1.h"
+
+#include "misc.h"
+#include "scrnintstr.h"
+#include "os.h"
+#include "regionstr.h"
+#include "validate.h"
+#include "windowstr.h"
+#include "input.h"
+#include "resource.h"
+#include "colormapst.h"
+#include "cursorstr.h"
+#include "dixstruct.h"
+#include "gcstruct.h"
+#include "servermd.h"
+#include "picturestr.h"
+#include "glyphstr.h"
+#include "mipict.h"
+
+/*
+ * From Knuth -- a good choice for hash/rehash values is p, p-2 where
+ * p and p-2 are both prime. These tables are sized to have an extra 10%
+ * free to avoid exponential performance degradation as the hash table fills
+ */
+static GlyphHashSetRec glyphHashSets[] = {
+ {32, 43, 41},
+ {64, 73, 71},
+ {128, 151, 149},
+ {256, 283, 281},
+ {512, 571, 569},
+ {1024, 1153, 1151},
+ {2048, 2269, 2267},
+ {4096, 4519, 4517},
+ {8192, 9013, 9011},
+ {16384, 18043, 18041},
+ {32768, 36109, 36107},
+ {65536, 72091, 72089},
+ {131072, 144409, 144407},
+ {262144, 288361, 288359},
+ {524288, 576883, 576881},
+ {1048576, 1153459, 1153457},
+ {2097152, 2307163, 2307161},
+ {4194304, 4613893, 4613891},
+ {8388608, 9227641, 9227639},
+ {16777216, 18455029, 18455027},
+ {33554432, 36911011, 36911009},
+ {67108864, 73819861, 73819859},
+ {134217728, 147639589, 147639587},
+ {268435456, 295279081, 295279079},
+ {536870912, 590559793, 590559791}
+};
+
+#define NGLYPHHASHSETS (sizeof(glyphHashSets)/sizeof(glyphHashSets[0]))
+
+static const CARD8 glyphDepths[GlyphFormatNum] = { 1, 4, 8, 16, 32 };
+
+static GlyphHashRec globalGlyphs[GlyphFormatNum];
+
+void
+GlyphUninit(ScreenPtr pScreen)
+{
+ PictureScreenPtr ps = GetPictureScreen(pScreen);
+ GlyphPtr glyph;
+ int fdepth, i;
+ int scrno = pScreen->myNum;
+
+ for (fdepth = 0; fdepth < GlyphFormatNum; fdepth++) {
+ if (!globalGlyphs[fdepth].hashSet)
+ continue;
+
+ for (i = 0; i < globalGlyphs[fdepth].hashSet->size; i++) {
+ glyph = globalGlyphs[fdepth].table[i].glyph;
+ if (glyph && glyph != DeletedGlyph) {
+ if (GlyphPicture(glyph)[scrno]) {
+ FreePicture((pointer) GlyphPicture(glyph)[scrno], 0);
+ GlyphPicture(glyph)[scrno] = NULL;
+ }
+ (*ps->UnrealizeGlyph) (pScreen, glyph);
+ }
+ }
+ }
+}
+
+GlyphHashSetPtr
+FindGlyphHashSet(CARD32 filled)
+{
+ int i;
+
+ for (i = 0; i < NGLYPHHASHSETS; i++)
+ if (glyphHashSets[i].entries >= filled)
+ return &glyphHashSets[i];
+ return 0;
+}
+
+GlyphRefPtr
+FindGlyphRef(GlyphHashPtr hash,
+ CARD32 signature, Bool match, unsigned char sha1[20])
+{
+ CARD32 elt, step, s;
+ GlyphPtr glyph;
+ GlyphRefPtr table, gr, del;
+ CARD32 tableSize = hash->hashSet->size;
+
+ table = hash->table;
+ elt = signature % tableSize;
+ step = 0;
+ del = 0;
+ for (;;) {
+ gr = &table[elt];
+ s = gr->signature;
+ glyph = gr->glyph;
+ if (!glyph) {
+ if (del)
+ gr = del;
+ break;
+ }
+ if (glyph == DeletedGlyph) {
+ if (!del)
+ del = gr;
+ else if (gr == del)
+ break;
+ }
+ else if (s == signature &&
+ (!match || memcmp(glyph->sha1, sha1, 20) == 0)) {
+ break;
+ }
+ if (!step) {
+ step = signature % hash->hashSet->rehash;
+ if (!step)
+ step = 1;
+ }
+ elt += step;
+ if (elt >= tableSize)
+ elt -= tableSize;
+ }
+ return gr;
+}
+
+int
+HashGlyph(xGlyphInfo * gi,
+ CARD8 *bits, unsigned long size, unsigned char sha1[20])
+{
+ void *ctx = x_sha1_init();
+ int success;
+
+ if (!ctx)
+ return BadAlloc;
+
+ success = x_sha1_update(ctx, gi, sizeof(xGlyphInfo));
+ if (!success)
+ return BadAlloc;
+ success = x_sha1_update(ctx, bits, size);
+ if (!success)
+ return BadAlloc;
+ success = x_sha1_final(ctx, sha1);
+ if (!success)
+ return BadAlloc;
+ return Success;
+}
+
+GlyphPtr
+FindGlyphByHash(unsigned char sha1[20], int format)
+{
+ GlyphRefPtr gr;
+ CARD32 signature = *(CARD32 *) sha1;
+
+ if (!globalGlyphs[format].hashSet)
+ return NULL;
+
+ gr = FindGlyphRef(&globalGlyphs[format], signature, TRUE, sha1);
+
+ if (gr->glyph && gr->glyph != DeletedGlyph)
+ return gr->glyph;
+ else
+ return NULL;
+}
+
+#ifdef CHECK_DUPLICATES
+void
+DuplicateRef(GlyphPtr glyph, char *where)
+{
+ ErrorF("Duplicate Glyph 0x%x from %s\n", glyph, where);
+}
+
+void
+CheckDuplicates(GlyphHashPtr hash, char *where)
+{
+ GlyphPtr g;
+ int i, j;
+
+ for (i = 0; i < hash->hashSet->size; i++) {
+ g = hash->table[i].glyph;
+ if (!g || g == DeletedGlyph)
+ continue;
+ for (j = i + 1; j < hash->hashSet->size; j++)
+ if (hash->table[j].glyph == g)
+ DuplicateRef(g, where);
+ }
+}
+#else
+#define CheckDuplicates(a,b)
+#define DuplicateRef(a,b)
+#endif
+
+static void
+FreeGlyphPicture(GlyphPtr glyph)
+{
+ PictureScreenPtr ps;
+ int i;
+
+ for (i = 0; i < screenInfo.numScreens; i++) {
+ ScreenPtr pScreen = screenInfo.screens[i];
+
+ if (GlyphPicture(glyph)[i])
+ FreePicture((pointer) GlyphPicture(glyph)[i], 0);
+
+ ps = GetPictureScreenIfSet(pScreen);
+ if (ps)
+ (*ps->UnrealizeGlyph) (pScreen, glyph);
+ }
+}
+
+void
+FreeGlyph(GlyphPtr glyph, int format)
+{
+ CheckDuplicates(&globalGlyphs[format], "FreeGlyph");
+ if (--glyph->refcnt == 0) {
+ GlyphRefPtr gr;
+ int i;
+ int first;
+ CARD32 signature;
+
+ first = -1;
+ for (i = 0; i < globalGlyphs[format].hashSet->size; i++)
+ if (globalGlyphs[format].table[i].glyph == glyph) {
+ if (first != -1)
+ DuplicateRef(glyph, "FreeGlyph check");
+ first = i;
+ }
+
+ signature = *(CARD32 *) glyph->sha1;
+ gr = FindGlyphRef(&globalGlyphs[format], signature, TRUE, glyph->sha1);
+ if (gr - globalGlyphs[format].table != first)
+ DuplicateRef(glyph, "Found wrong one");
+ if (gr->glyph && gr->glyph != DeletedGlyph) {
+ gr->glyph = DeletedGlyph;
+ gr->signature = 0;
+ globalGlyphs[format].tableEntries--;
+ }
+
+ FreeGlyphPicture(glyph);
+ dixFreeObjectWithPrivates(glyph, PRIVATE_GLYPH);
+ }
+}
+
+void
+AddGlyph(GlyphSetPtr glyphSet, GlyphPtr glyph, Glyph id)
+{
+ GlyphRefPtr gr;
+ CARD32 signature;
+
+ CheckDuplicates(&globalGlyphs[glyphSet->fdepth], "AddGlyph top global");
+ /* Locate existing matching glyph */
+ signature = *(CARD32 *) glyph->sha1;
+ gr = FindGlyphRef(&globalGlyphs[glyphSet->fdepth], signature,
+ TRUE, glyph->sha1);
+ if (gr->glyph && gr->glyph != DeletedGlyph && gr->glyph != glyph) {
+ FreeGlyphPicture(glyph);
+ dixFreeObjectWithPrivates(glyph, PRIVATE_GLYPH);
+ glyph = gr->glyph;
+ }
+ else if (gr->glyph != glyph) {
+ gr->glyph = glyph;
+ gr->signature = signature;
+ globalGlyphs[glyphSet->fdepth].tableEntries++;
+ }
+
+ /* Insert/replace glyphset value */
+ gr = FindGlyphRef(&glyphSet->hash, id, FALSE, 0);
+ ++glyph->refcnt;
+ if (gr->glyph && gr->glyph != DeletedGlyph)
+ FreeGlyph(gr->glyph, glyphSet->fdepth);
+ else
+ glyphSet->hash.tableEntries++;
+ gr->glyph = glyph;
+ gr->signature = id;
+ CheckDuplicates(&globalGlyphs[glyphSet->fdepth], "AddGlyph bottom");
+}
+
+Bool
+DeleteGlyph(GlyphSetPtr glyphSet, Glyph id)
+{
+ GlyphRefPtr gr;
+ GlyphPtr glyph;
+
+ gr = FindGlyphRef(&glyphSet->hash, id, FALSE, 0);
+ glyph = gr->glyph;
+ if (glyph && glyph != DeletedGlyph) {
+ gr->glyph = DeletedGlyph;
+ glyphSet->hash.tableEntries--;
+ FreeGlyph(glyph, glyphSet->fdepth);
+ return TRUE;
+ }
+ return FALSE;
+}
+
+GlyphPtr
+FindGlyph(GlyphSetPtr glyphSet, Glyph id)
+{
+ GlyphPtr glyph;
+
+ glyph = FindGlyphRef(&glyphSet->hash, id, FALSE, 0)->glyph;
+ if (glyph == DeletedGlyph)
+ glyph = 0;
+ return glyph;
+}
+
+GlyphPtr
+AllocateGlyph(xGlyphInfo * gi, int fdepth)
+{
+ PictureScreenPtr ps;
+ int size;
+ GlyphPtr glyph;
+ int i;
+ int head_size;
+
+ head_size = sizeof(GlyphRec) + screenInfo.numScreens * sizeof(PicturePtr);
+ size = (head_size + dixPrivatesSize(PRIVATE_GLYPH));
+ glyph = (GlyphPtr) malloc(size);
+ if (!glyph)
+ return 0;
+ glyph->refcnt = 0;
+ glyph->size = size + sizeof(xGlyphInfo);
+ glyph->info = *gi;
+ dixInitPrivates(glyph, (char *) glyph + head_size, PRIVATE_GLYPH);
+
+ for (i = 0; i < screenInfo.numScreens; i++) {
+ GlyphPicture(glyph)[i] = NULL;
+ ps = GetPictureScreenIfSet(screenInfo.screens[i]);
+
+ if (ps) {
+ if (!(*ps->RealizeGlyph) (screenInfo.screens[i], glyph))
+ goto bail;
+ }
+ }
+
+ return glyph;
+
+ bail:
+ while (i--) {
+ ps = GetPictureScreenIfSet(screenInfo.screens[i]);
+ if (ps)
+ (*ps->UnrealizeGlyph) (screenInfo.screens[i], glyph);
+ }
+
+ dixFreeObjectWithPrivates(glyph, PRIVATE_GLYPH);
+ return 0;
+}
+
+Bool
+AllocateGlyphHash(GlyphHashPtr hash, GlyphHashSetPtr hashSet)
+{
+ hash->table = calloc(hashSet->size, sizeof(GlyphRefRec));
+ if (!hash->table)
+ return FALSE;
+ hash->hashSet = hashSet;
+ hash->tableEntries = 0;
+ return TRUE;
+}
+
+Bool
+ResizeGlyphHash(GlyphHashPtr hash, CARD32 change, Bool global)
+{
+ CARD32 tableEntries;
+ GlyphHashSetPtr hashSet;
+ GlyphHashRec newHash;
+ GlyphRefPtr gr;
+ GlyphPtr glyph;
+ int i;
+ int oldSize;
+ CARD32 s;
+
+ tableEntries = hash->tableEntries + change;
+ hashSet = FindGlyphHashSet(tableEntries);
+ if (hashSet == hash->hashSet)
+ return TRUE;
+ if (global)
+ CheckDuplicates(hash, "ResizeGlyphHash top");
+ if (!AllocateGlyphHash(&newHash, hashSet))
+ return FALSE;
+ if (hash->table) {
+ oldSize = hash->hashSet->size;
+ for (i = 0; i < oldSize; i++) {
+ glyph = hash->table[i].glyph;
+ if (glyph && glyph != DeletedGlyph) {
+ s = hash->table[i].signature;
+ gr = FindGlyphRef(&newHash, s, global, glyph->sha1);
+
+ gr->signature = s;
+ gr->glyph = glyph;
+ ++newHash.tableEntries;
+ }
+ }
+ free(hash->table);
+ }
+ *hash = newHash;
+ if (global)
+ CheckDuplicates(hash, "ResizeGlyphHash bottom");
+ return TRUE;
+}
+
+Bool
+ResizeGlyphSet(GlyphSetPtr glyphSet, CARD32 change)
+{
+ return (ResizeGlyphHash(&glyphSet->hash, change, FALSE) &&
+ ResizeGlyphHash(&globalGlyphs[glyphSet->fdepth], change, TRUE));
+}
+
+GlyphSetPtr
+AllocateGlyphSet(int fdepth, PictFormatPtr format)
+{
+ GlyphSetPtr glyphSet;
+
+ if (!globalGlyphs[fdepth].hashSet) {
+ if (!AllocateGlyphHash(&globalGlyphs[fdepth], &glyphHashSets[0]))
+ return FALSE;
+ }
+
+ glyphSet = dixAllocateObjectWithPrivates(GlyphSetRec, PRIVATE_GLYPHSET);
+ if (!glyphSet)
+ return FALSE;
+
+ if (!AllocateGlyphHash(&glyphSet->hash, &glyphHashSets[0])) {
+ free(glyphSet);
+ return FALSE;
+ }
+ glyphSet->refcnt = 1;
+ glyphSet->fdepth = fdepth;
+ glyphSet->format = format;
+ return glyphSet;
+}
+
+int
+FreeGlyphSet(pointer value, XID gid)
+{
+ GlyphSetPtr glyphSet = (GlyphSetPtr) value;
+
+ if (--glyphSet->refcnt == 0) {
+ CARD32 i, tableSize = glyphSet->hash.hashSet->size;
+ GlyphRefPtr table = glyphSet->hash.table;
+ GlyphPtr glyph;
+
+ for (i = 0; i < tableSize; i++) {
+ glyph = table[i].glyph;
+ if (glyph && glyph != DeletedGlyph)
+ FreeGlyph(glyph, glyphSet->fdepth);
+ }
+ if (!globalGlyphs[glyphSet->fdepth].tableEntries) {
+ free(globalGlyphs[glyphSet->fdepth].table);
+ globalGlyphs[glyphSet->fdepth].table = 0;
+ globalGlyphs[glyphSet->fdepth].hashSet = 0;
+ }
+ else
+ ResizeGlyphHash(&globalGlyphs[glyphSet->fdepth], 0, TRUE);
+ free(table);
+ dixFreeObjectWithPrivates(glyphSet, PRIVATE_GLYPHSET);
+ }
+ return Success;
+}
+
+static void
+GlyphExtents(int nlist, GlyphListPtr list, GlyphPtr * glyphs, BoxPtr extents)
+{
+ int x1, x2, y1, y2;
+ int n;
+ GlyphPtr glyph;
+ int x, y;
+
+ x = 0;
+ y = 0;
+ extents->x1 = MAXSHORT;
+ extents->x2 = MINSHORT;
+ extents->y1 = MAXSHORT;
+ extents->y2 = MINSHORT;
+ while (nlist--) {
+ x += list->xOff;
+ y += list->yOff;
+ n = list->len;
+ list++;
+ while (n--) {
+ glyph = *glyphs++;
+ x1 = x - glyph->info.x;
+ if (x1 < MINSHORT)
+ x1 = MINSHORT;
+ y1 = y - glyph->info.y;
+ if (y1 < MINSHORT)
+ y1 = MINSHORT;
+ x2 = x1 + glyph->info.width;
+ if (x2 > MAXSHORT)
+ x2 = MAXSHORT;
+ y2 = y1 + glyph->info.height;
+ if (y2 > MAXSHORT)
+ y2 = MAXSHORT;
+ if (x1 < extents->x1)
+ extents->x1 = x1;
+ if (x2 > extents->x2)
+ extents->x2 = x2;
+ if (y1 < extents->y1)
+ extents->y1 = y1;
+ if (y2 > extents->y2)
+ extents->y2 = y2;
+ x += glyph->info.xOff;
+ y += glyph->info.yOff;
+ }
+ }
+}
+
+#define NeedsComponent(f) (PICT_FORMAT_A(f) != 0 && PICT_FORMAT_RGB(f) != 0)
+
+void
+CompositeGlyphs(CARD8 op,
+ PicturePtr pSrc,
+ PicturePtr pDst,
+ PictFormatPtr maskFormat,
+ INT16 xSrc,
+ INT16 ySrc, int nlist, GlyphListPtr lists, GlyphPtr * glyphs)
+{
+ PictureScreenPtr ps = GetPictureScreen(pDst->pDrawable->pScreen);
+
+ ValidatePicture(pSrc);
+ ValidatePicture(pDst);
+ (*ps->Glyphs) (op, pSrc, pDst, maskFormat, xSrc, ySrc, nlist, lists,
+ glyphs);
+}
+
+Bool
+miRealizeGlyph(ScreenPtr pScreen, GlyphPtr glyph)
+{
+ return TRUE;
+}
+
+void
+miUnrealizeGlyph(ScreenPtr pScreen, GlyphPtr glyph)
+{
+}
+
+void
+miGlyphs(CARD8 op,
+ PicturePtr pSrc,
+ PicturePtr pDst,
+ PictFormatPtr maskFormat,
+ INT16 xSrc,
+ INT16 ySrc, int nlist, GlyphListPtr list, GlyphPtr * glyphs)
+{
+ PicturePtr pPicture;
+ PixmapPtr pMaskPixmap = 0;
+ PicturePtr pMask;
+ ScreenPtr pScreen = pDst->pDrawable->pScreen;
+ int width = 0, height = 0;
+ int x, y;
+ int xDst = list->xOff, yDst = list->yOff;
+ int n;
+ GlyphPtr glyph;
+ int error;
+ BoxRec extents = { 0, 0, 0, 0 };
+ CARD32 component_alpha;
+
+ if (maskFormat) {
+ GCPtr pGC;
+ xRectangle rect;
+
+ GlyphExtents(nlist, list, glyphs, &extents);
+
+ if (extents.x2 <= extents.x1 || extents.y2 <= extents.y1)
+ return;
+ width = extents.x2 - extents.x1;
+ height = extents.y2 - extents.y1;
+ pMaskPixmap = (*pScreen->CreatePixmap) (pScreen, width, height,
+ maskFormat->depth,
+ CREATE_PIXMAP_USAGE_SCRATCH);
+ if (!pMaskPixmap)
+ return;
+ component_alpha = NeedsComponent(maskFormat->format);
+ pMask = CreatePicture(0, &pMaskPixmap->drawable,
+ maskFormat, CPComponentAlpha, &component_alpha,
+ serverClient, &error);
+ if (!pMask) {
+ (*pScreen->DestroyPixmap) (pMaskPixmap);
+ return;
+ }
+ pGC = GetScratchGC(pMaskPixmap->drawable.depth, pScreen);
+ ValidateGC(&pMaskPixmap->drawable, pGC);
+ rect.x = 0;
+ rect.y = 0;
+ rect.width = width;
+ rect.height = height;
+ (*pGC->ops->PolyFillRect) (&pMaskPixmap->drawable, pGC, 1, &rect);
+ FreeScratchGC(pGC);
+ x = -extents.x1;
+ y = -extents.y1;
+ }
+ else {
+ pMask = pDst;
+ x = 0;
+ y = 0;
+ }
+ while (nlist--) {
+ x += list->xOff;
+ y += list->yOff;
+ n = list->len;
+ while (n--) {
+ glyph = *glyphs++;
+ pPicture = GlyphPicture(glyph)[pScreen->myNum];
+
+ if (pPicture) {
+ if (maskFormat) {
+ CompositePicture(PictOpAdd,
+ pPicture,
+ None,
+ pMask,
+ 0, 0,
+ 0, 0,
+ x - glyph->info.x,
+ y - glyph->info.y,
+ glyph->info.width, glyph->info.height);
+ }
+ else {
+ CompositePicture(op,
+ pSrc,
+ pPicture,
+ pDst,
+ xSrc + (x - glyph->info.x) - xDst,
+ ySrc + (y - glyph->info.y) - yDst,
+ 0, 0,
+ x - glyph->info.x,
+ y - glyph->info.y,
+ glyph->info.width, glyph->info.height);
+ }
+ }
+
+ x += glyph->info.xOff;
+ y += glyph->info.yOff;
+ }
+ list++;
+ }
+ if (maskFormat) {
+ x = extents.x1;
+ y = extents.y1;
+ CompositePicture(op,
+ pSrc,
+ pMask,
+ pDst,
+ xSrc + x - xDst,
+ ySrc + y - yDst, 0, 0, x, y, width, height);
+ FreePicture((pointer) pMask, (XID) 0);
+ (*pScreen->DestroyPixmap) (pMaskPixmap);
+ }
+}