Merge branch 'nxagent'

1 files changed, 581 insertions, 0 deletions

diff --git a/nx-X11/programs/Xserver/hw/nxagent/X/NXglyph.c b/nx-X11/programs/Xserver/hw/nxagent/X/NXglyph.c
new file mode 100644
index 000000000..cd65fdc0e
--- /dev/null
+++ b/nx-X11/programs/Xserver/hw/nxagent/X/NXglyph.c
@@ -0,0 +1,581 @@
+/**************************************************************************/
+/*                                                                        */
+/* Copyright (c) 2001, 2011 NoMachine, http://www.nomachine.com/.         */
+/*                                                                        */
+/* NXAGENT, NX protocol compression and NX extensions to this software    */
+/* are copyright of NoMachine. Redistribution and use of the present      */
+/* software is allowed according to terms specified in the file LICENSE   */
+/* which comes in the source distribution.                                */
+/*                                                                        */
+/* Check http://www.nomachine.com/licensing.html for applicability.       */
+/*                                                                        */
+/* NX and NoMachine are trademarks of Medialogic S.p.A.                   */
+/*                                                                        */
+/* All rights reserved.                                                   */
+/*                                                                        */
+/**************************************************************************/
+
+/*
+ * $XFree86: xc/programs/Xserver/render/glyph.c,v 1.5 2001/01/30 07:01:22 keithp Exp $
+ *
+ * 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 "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"
+
+#ifdef NXAGENT_SERVER
+
+#include "NXpicturestr.h"
+#include "NXglyphstr.h"
+#include "Render.h"
+
+#define PANIC
+#define WARNING
+#undef  DEBUG
+#undef  TEST
+
+#else
+
+#include "picturestr.h"
+#include "glyphstr.h"
+
+#endif
+
+#if HAVE_STDINT_H
+#include <stdint.h>
+#elif !defined(UINT32_MAX)
+#define UINT32_MAX 0xffffffffU
+#endif
+
+/*
+ * 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]))
+
+const CARD8	glyphDepths[GlyphFormatNum] = { 1, 4, 8, 16, 32 };
+
+GlyphHashRec	globalGlyphs[GlyphFormatNum];
+
+GlyphHashSetPtr
+FindGlyphHashSet (CARD32 filled)
+{
+    int	i;
+
+    for (i = 0; i < NGLYPHHASHSETS; i++)
+	if (glyphHashSets[i].entries >= filled)
+	    return &glyphHashSets[i];
+    return 0;
+}
+
+static int _GlyphSetPrivateAllocateIndex = 0;
+
+int
+AllocateGlyphSetPrivateIndex (void)
+{
+    return _GlyphSetPrivateAllocateIndex++;
+}
+
+void
+ResetGlyphSetPrivateIndex (void)
+{
+    _GlyphSetPrivateAllocateIndex = 0;
+}
+
+Bool
+_GlyphSetSetNewPrivate (GlyphSetPtr glyphSet, int n, pointer ptr)
+{
+    pointer *new;
+
+    if (n > glyphSet->maxPrivate) {
+	if (glyphSet->devPrivates &&
+	    glyphSet->devPrivates != (pointer)(&glyphSet[1])) {
+	    new = (pointer *) xrealloc (glyphSet->devPrivates,
+					(n + 1) * sizeof (pointer));
+	    if (!new)
+		return FALSE;
+	} else {
+	    new = (pointer *) xalloc ((n + 1) * sizeof (pointer));
+	    if (!new)
+		return FALSE;
+	    if (glyphSet->devPrivates)
+		memcpy (new,
+			glyphSet->devPrivates,
+			(glyphSet->maxPrivate + 1) * sizeof (pointer));
+	}
+	glyphSet->devPrivates = new;
+	/* Zero out new, uninitialize privates */
+	while (++glyphSet->maxPrivate < n)
+	    glyphSet->devPrivates[glyphSet->maxPrivate] = (pointer)0;
+    }
+    glyphSet->devPrivates[n] = ptr;
+    return TRUE;
+}
+
+Bool
+GlyphInit (ScreenPtr pScreen)
+{
+    return TRUE;
+}
+
+GlyphRefPtr
+FindGlyphRef (GlyphHashPtr hash, CARD32 signature, Bool match, GlyphPtr compare)
+{
+    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 (&compare->info, &glyph->info, compare->size) == 0))
+	{
+	    break;
+	}
+	if (!step)
+	{
+	    step = signature % hash->hashSet->rehash;
+	    if (!step)
+		step = 1;
+	}
+	elt += step;
+	if (elt >= tableSize)
+	    elt -= tableSize;
+    }
+    return gr;
+}
+
+CARD32
+HashGlyph (GlyphPtr glyph)
+{
+    CARD32  *bits = (CARD32 *) &(glyph->info);
+    CARD32  hash;
+    int	    n = glyph->size / sizeof (CARD32);
+
+    hash = 0;
+    while (n--)
+	hash ^= *bits++;
+    return hash;
+}
+
+#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
+
+void
+FreeGlyph (GlyphPtr glyph, int format)
+{
+    CheckDuplicates (&globalGlyphs[format], "FreeGlyph");
+    if (--glyph->refcnt == 0)
+    {
+	GlyphRefPtr gr;
+	int	    i;
+	int	    first;
+
+	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;
+	    }
+
+	gr = FindGlyphRef (&globalGlyphs[format],
+			   HashGlyph (glyph), TRUE, glyph);
+	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--;
+	}
+	xfree (glyph);
+    }
+}
+
+void
+AddGlyph (GlyphSetPtr glyphSet, GlyphPtr glyph, Glyph id)
+{
+    GlyphRefPtr	    gr;
+    CARD32	    hash;
+
+    CheckDuplicates (&globalGlyphs[glyphSet->fdepth], "AddGlyph top global");
+    /* Locate existing matching glyph */
+    hash = HashGlyph (glyph);
+    gr = FindGlyphRef (&globalGlyphs[glyphSet->fdepth], hash, TRUE, glyph);
+    if (gr->glyph && gr->glyph != DeletedGlyph)
+    {
+	xfree (glyph);
+	glyph = gr->glyph;
+    }
+    else
+    {
+	gr->glyph = glyph;
+	gr->signature = hash;
+	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;
+
+    #ifdef NXAGENT_SERVER
+
+    gr -> corruptedGlyph = 1;
+
+    #endif
+
+    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;
+}
+
+#ifdef NXAGENT_SERVER
+
+GlyphPtr FindGlyph (GlyphSetPtr glyphSet, Glyph id)
+{
+  GlyphRefPtr gr;
+  GlyphPtr    glyph;
+
+  gr = FindGlyphRef (&glyphSet->hash, id, FALSE, 0);
+  glyph = gr -> glyph;
+
+  if (glyph == DeletedGlyph)
+  {
+    glyph = 0;
+  }
+  else if (gr -> corruptedGlyph == 1)
+  {
+     #ifdef DEBUG
+     fprintf(stderr, "FindGlyphRef: Going to synchronize the glyph [%p] for glyphset [%p].\n",
+                 (void *) glyph, (void *) glyphSet);
+     #endif
+
+    nxagentAddGlyphs(glyphSet, &id, &(glyph -> info), 1,
+                         (CARD8*)(glyph + 1), glyph -> size - sizeof(xGlyphInfo));
+  }
+
+  return glyph;
+}
+
+#else
+
+GlyphPtr
+FindGlyph (GlyphSetPtr glyphSet, Glyph id)
+{
+    GlyphPtr        glyph;
+
+    glyph = FindGlyphRef (&glyphSet->hash, id, FALSE, 0)->glyph;
+    if (glyph == DeletedGlyph)
+	glyph = 0;
+    return glyph;
+}
+
+#endif
+
+GlyphPtr
+AllocateGlyph (xGlyphInfo *gi, int fdepth)
+{
+    int		size;
+    GlyphPtr	glyph;
+    size_t	     padded_width;
+    
+    padded_width = PixmapBytePad (gi->width, glyphDepths[fdepth]);
+    if (gi->height && padded_width > (UINT32_MAX - sizeof(GlyphRec))/gi->height)
+	return 0;
+    size = gi->height * padded_width;
+    glyph = (GlyphPtr) xalloc (size + sizeof (GlyphRec));
+    if (!glyph)
+	return 0;
+    glyph->refcnt = 0;
+    glyph->size = size + sizeof (xGlyphInfo);
+    glyph->info = *gi;
+    return glyph;
+}
+    
+Bool
+AllocateGlyphHash (GlyphHashPtr hash, GlyphHashSetPtr hashSet)
+{
+    hash->table = (GlyphRefPtr) xalloc (hashSet->size * sizeof (GlyphRefRec));
+    if (!hash->table)
+	return FALSE;
+    memset (hash->table, 0, hashSet->size * sizeof (GlyphRefRec));
+    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;
+
+    #ifdef NXAGENT_SERVER
+
+    CARD32          c;
+
+    #endif
+
+    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;
+
+                #ifdef NXAGENT_SERVER
+
+                c = hash->table[i].corruptedGlyph;
+
+                #endif
+
+		gr = FindGlyphRef (&newHash, s, global, glyph);
+		gr->signature = s;
+		gr->glyph = glyph;
+
+                #ifdef NXAGENT_SERVER
+
+                gr -> corruptedGlyph = c;
+
+                #endif
+
+		++newHash.tableEntries;
+	    }
+	}
+	xfree (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;
+    int size;
+    
+    if (!globalGlyphs[fdepth].hashSet)
+    {
+	if (!AllocateGlyphHash (&globalGlyphs[fdepth], &glyphHashSets[0]))
+	    return FALSE;
+    }
+
+    size = (sizeof (GlyphSetRec) +
+	    (sizeof (pointer) * _GlyphSetPrivateAllocateIndex));
+    glyphSet = xalloc (size);
+    if (!glyphSet)
+	return FALSE;
+    bzero((char *)glyphSet, size);
+    glyphSet->maxPrivate = _GlyphSetPrivateAllocateIndex - 1;
+    if (_GlyphSetPrivateAllocateIndex)
+	glyphSet->devPrivates = (pointer)(&glyphSet[1]);
+
+    if (!AllocateGlyphHash (&glyphSet->hash, &glyphHashSets[0]))
+    {
+	xfree (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)
+	{
+	    xfree (globalGlyphs[glyphSet->fdepth].table);
+	    globalGlyphs[glyphSet->fdepth].table = 0;
+	    globalGlyphs[glyphSet->fdepth].hashSet = 0;
+	}
+	else
+	    ResizeGlyphHash (&globalGlyphs[glyphSet->fdepth], 0, TRUE);
+	xfree (table);
+
+	if (glyphSet->devPrivates &&
+	    glyphSet->devPrivates != (pointer)(&glyphSet[1]))
+	    xfree(glyphSet->devPrivates);
+
+	xfree (glyphSet);
+    }
+    return Success;
+}
+