774 lines
17 KiB
C
774 lines
17 KiB
C
/*
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*
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* Copyright © 2000 SuSE, Inc.
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that
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* copyright notice and this permission notice appear in supporting
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* documentation, and that the name of SuSE not be used in advertising or
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* publicity pertaining to distribution of the software without specific,
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* written prior permission. SuSE makes no representations about the
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* suitability of this software for any purpose. It is provided "as is"
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* without express or implied warranty.
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*
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* SuSE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL SuSE
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* BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
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* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* Author: Keith Packard, SuSE, Inc.
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*/
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#ifdef HAVE_DIX_CONFIG_H
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#include <dix-config.h>
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#endif
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#ifdef HAVE_SHA1_IN_LIBMD /* Use libmd for SHA1 */
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# include <sha1.h>
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#else /* Use OpenSSL's libcrypto */
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# include <stddef.h> /* buggy openssl/sha.h wants size_t */
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# include <openssl/sha.h>
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#endif
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#include "misc.h"
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#include "scrnintstr.h"
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#include "os.h"
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#include "regionstr.h"
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#include "validate.h"
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#include "windowstr.h"
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#include "input.h"
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#include "resource.h"
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#include "colormapst.h"
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#include "cursorstr.h"
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#include "dixstruct.h"
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#include "gcstruct.h"
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#include "servermd.h"
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#include "picturestr.h"
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#include "glyphstr.h"
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#include "mipict.h"
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/*
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* From Knuth -- a good choice for hash/rehash values is p, p-2 where
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* p and p-2 are both prime. These tables are sized to have an extra 10%
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* free to avoid exponential performance degradation as the hash table fills
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*/
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static GlyphHashSetRec glyphHashSets[] = {
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{ 32, 43, 41 },
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{ 64, 73, 71 },
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{ 128, 151, 149 },
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{ 256, 283, 281 },
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{ 512, 571, 569 },
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{ 1024, 1153, 1151 },
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{ 2048, 2269, 2267 },
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{ 4096, 4519, 4517 },
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{ 8192, 9013, 9011 },
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{ 16384, 18043, 18041 },
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{ 32768, 36109, 36107 },
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{ 65536, 72091, 72089 },
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{ 131072, 144409, 144407 },
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{ 262144, 288361, 288359 },
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{ 524288, 576883, 576881 },
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{ 1048576, 1153459, 1153457 },
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{ 2097152, 2307163, 2307161 },
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{ 4194304, 4613893, 4613891 },
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{ 8388608, 9227641, 9227639 },
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{ 16777216, 18455029, 18455027 },
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{ 33554432, 36911011, 36911009 },
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{ 67108864, 73819861, 73819859 },
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{ 134217728, 147639589, 147639587 },
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{ 268435456, 295279081, 295279079 },
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{ 536870912, 590559793, 590559791 }
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};
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#define NGLYPHHASHSETS (sizeof(glyphHashSets)/sizeof(glyphHashSets[0]))
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static const CARD8 glyphDepths[GlyphFormatNum] = { 1, 4, 8, 16, 32 };
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static GlyphHashRec globalGlyphs[GlyphFormatNum];
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static void
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FreeGlyphPrivates (GlyphPtr glyph)
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{
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dixFreePrivates(glyph->devPrivates);
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glyph->devPrivates = NULL;
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}
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void
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GlyphUninit (ScreenPtr pScreen)
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{
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PictureScreenPtr ps = GetPictureScreen (pScreen);
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GlyphPtr glyph;
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int fdepth, i;
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for (fdepth = 0; fdepth < GlyphFormatNum; fdepth++)
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{
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if (!globalGlyphs[fdepth].hashSet)
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continue;
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for (i = 0; i < globalGlyphs[fdepth].hashSet->size; i++)
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{
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glyph = globalGlyphs[fdepth].table[i].glyph;
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if (glyph && glyph != DeletedGlyph)
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{
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(*ps->UnrealizeGlyph) (pScreen, glyph);
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FreeGlyphPrivates(glyph);
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}
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}
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}
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for (fdepth = 0; fdepth < GlyphFormatNum; fdepth++)
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{
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if (!globalGlyphs[fdepth].hashSet)
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continue;
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for (i = 0; i < globalGlyphs[fdepth].hashSet->size; i++)
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glyph = globalGlyphs[fdepth].table[i].glyph;
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}
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}
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GlyphHashSetPtr
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FindGlyphHashSet (CARD32 filled)
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{
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int i;
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for (i = 0; i < NGLYPHHASHSETS; i++)
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if (glyphHashSets[i].entries >= filled)
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return &glyphHashSets[i];
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return 0;
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}
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GlyphRefPtr
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FindGlyphRef (GlyphHashPtr hash,
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CARD32 signature,
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Bool match,
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unsigned char sha1[20])
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{
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CARD32 elt, step, s;
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GlyphPtr glyph;
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GlyphRefPtr table, gr, del;
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CARD32 tableSize = hash->hashSet->size;
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table = hash->table;
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elt = signature % tableSize;
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step = 0;
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del = 0;
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for (;;)
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{
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gr = &table[elt];
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s = gr->signature;
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glyph = gr->glyph;
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if (!glyph)
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{
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if (del)
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gr = del;
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break;
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}
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if (glyph == DeletedGlyph)
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{
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if (!del)
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del = gr;
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else if (gr == del)
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break;
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}
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else if (s == signature &&
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(!match ||
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memcmp (glyph->sha1, sha1, 20) == 0))
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{
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break;
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}
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if (!step)
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{
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step = signature % hash->hashSet->rehash;
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if (!step)
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step = 1;
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}
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elt += step;
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if (elt >= tableSize)
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elt -= tableSize;
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}
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return gr;
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}
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int
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HashGlyph (xGlyphInfo *gi,
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CARD8 *bits,
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unsigned long size,
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unsigned char sha1[20])
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{
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#ifdef HAVE_SHA1_IN_LIBMD /* Use libmd for SHA1 */
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SHA1_CTX ctx;
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SHA1Init (&ctx);
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SHA1Update (&ctx, gi, sizeof (xGlyphInfo));
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SHA1Update (&ctx, bits, size);
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SHA1Final (sha1, &ctx);
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#else /* Use OpenSSL's libcrypto */
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SHA_CTX ctx;
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int success;
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success = SHA1_Init (&ctx);
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if (! success)
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return BadAlloc;
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success = SHA1_Update (&ctx, gi, sizeof (xGlyphInfo));
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if (! success)
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return BadAlloc;
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success = SHA1_Update (&ctx, bits, size);
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if (! success)
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return BadAlloc;
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success = SHA1_Final (sha1, &ctx);
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if (! success)
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return BadAlloc;
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#endif
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return Success;
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}
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GlyphPtr
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FindGlyphByHash (unsigned char sha1[20], int format)
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{
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GlyphRefPtr gr;
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CARD32 signature = *(CARD32 *) sha1;
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gr = FindGlyphRef (&globalGlyphs[format],
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signature, TRUE, sha1);
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if (gr->glyph && gr->glyph != DeletedGlyph)
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return gr->glyph;
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else
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return NULL;
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}
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#ifdef CHECK_DUPLICATES
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void
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DuplicateRef (GlyphPtr glyph, char *where)
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{
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ErrorF ("Duplicate Glyph 0x%x from %s\n", glyph, where);
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}
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void
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CheckDuplicates (GlyphHashPtr hash, char *where)
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{
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GlyphPtr g;
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int i, j;
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for (i = 0; i < hash->hashSet->size; i++)
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{
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g = hash->table[i].glyph;
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if (!g || g == DeletedGlyph)
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continue;
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for (j = i + 1; j < hash->hashSet->size; j++)
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if (hash->table[j].glyph == g)
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DuplicateRef (g, where);
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}
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}
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#else
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#define CheckDuplicates(a,b)
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#define DuplicateRef(a,b)
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#endif
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static void
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FreeGlyphPicture(GlyphPtr glyph)
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{
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PictureScreenPtr ps;
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int i;
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for (i = 0; i < screenInfo.numScreens; i++)
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{
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ScreenPtr pScreen = screenInfo.screens[i];
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FreePicture ((pointer) GlyphPicture (glyph)[i], 0);
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ps = GetPictureScreenIfSet (pScreen);
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if (ps)
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(*ps->UnrealizeGlyph) (pScreen, glyph);
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}
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}
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void
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FreeGlyph (GlyphPtr glyph, int format)
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{
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CheckDuplicates (&globalGlyphs[format], "FreeGlyph");
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if (--glyph->refcnt == 0)
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{
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GlyphRefPtr gr;
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int i;
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int first;
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CARD32 signature;
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first = -1;
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for (i = 0; i < globalGlyphs[format].hashSet->size; i++)
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if (globalGlyphs[format].table[i].glyph == glyph)
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{
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if (first != -1)
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DuplicateRef (glyph, "FreeGlyph check");
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first = i;
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}
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signature = *(CARD32 *) glyph->sha1;
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gr = FindGlyphRef (&globalGlyphs[format], signature,
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TRUE, glyph->sha1);
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if (gr - globalGlyphs[format].table != first)
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DuplicateRef (glyph, "Found wrong one");
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if (gr->glyph && gr->glyph != DeletedGlyph)
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{
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gr->glyph = DeletedGlyph;
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gr->signature = 0;
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globalGlyphs[format].tableEntries--;
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}
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FreeGlyphPicture(glyph);
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FreeGlyphPrivates(glyph);
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xfree (glyph);
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}
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}
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void
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AddGlyph (GlyphSetPtr glyphSet, GlyphPtr glyph, Glyph id)
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{
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GlyphRefPtr gr;
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CARD32 signature;
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CheckDuplicates (&globalGlyphs[glyphSet->fdepth], "AddGlyph top global");
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/* Locate existing matching glyph */
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signature = *(CARD32 *) glyph->sha1;
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gr = FindGlyphRef (&globalGlyphs[glyphSet->fdepth], signature,
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TRUE, glyph->sha1);
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if (gr->glyph && gr->glyph != DeletedGlyph && gr->glyph != glyph)
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{
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FreeGlyphPicture(glyph);
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FreeGlyphPrivates(glyph);
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xfree (glyph);
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glyph = gr->glyph;
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}
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else if (gr->glyph != glyph)
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{
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gr->glyph = glyph;
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gr->signature = signature;
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globalGlyphs[glyphSet->fdepth].tableEntries++;
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}
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/* Insert/replace glyphset value */
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gr = FindGlyphRef (&glyphSet->hash, id, FALSE, 0);
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++glyph->refcnt;
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if (gr->glyph && gr->glyph != DeletedGlyph)
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FreeGlyph (gr->glyph, glyphSet->fdepth);
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else
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glyphSet->hash.tableEntries++;
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gr->glyph = glyph;
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gr->signature = id;
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CheckDuplicates (&globalGlyphs[glyphSet->fdepth], "AddGlyph bottom");
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}
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Bool
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DeleteGlyph (GlyphSetPtr glyphSet, Glyph id)
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{
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GlyphRefPtr gr;
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GlyphPtr glyph;
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gr = FindGlyphRef (&glyphSet->hash, id, FALSE, 0);
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glyph = gr->glyph;
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if (glyph && glyph != DeletedGlyph)
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{
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gr->glyph = DeletedGlyph;
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glyphSet->hash.tableEntries--;
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FreeGlyph (glyph, glyphSet->fdepth);
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return TRUE;
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}
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return FALSE;
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}
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GlyphPtr
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FindGlyph (GlyphSetPtr glyphSet, Glyph id)
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{
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GlyphPtr glyph;
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glyph = FindGlyphRef (&glyphSet->hash, id, FALSE, 0)->glyph;
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if (glyph == DeletedGlyph)
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glyph = 0;
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return glyph;
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}
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GlyphPtr
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AllocateGlyph (xGlyphInfo *gi, int fdepth)
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{
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PictureScreenPtr ps;
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int size;
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GlyphPtr glyph;
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int i;
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size = screenInfo.numScreens * sizeof (PicturePtr);
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glyph = (GlyphPtr) xalloc (size + sizeof (GlyphRec));
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if (!glyph)
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return 0;
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glyph->refcnt = 0;
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glyph->size = size + sizeof (xGlyphInfo);
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glyph->info = *gi;
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glyph->devPrivates = NULL;
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for (i = 0; i < screenInfo.numScreens; i++)
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{
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ps = GetPictureScreenIfSet (screenInfo.screens[i]);
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if (ps)
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{
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if (!(*ps->RealizeGlyph) (screenInfo.screens[i], glyph))
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goto bail;
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}
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}
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return glyph;
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bail:
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while (i--)
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{
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ps = GetPictureScreenIfSet (screenInfo.screens[i]);
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if (ps)
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(*ps->UnrealizeGlyph) (screenInfo.screens[i], glyph);
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}
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FreeGlyphPrivates(glyph);
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xfree (glyph);
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return 0;
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}
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Bool
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AllocateGlyphHash (GlyphHashPtr hash, GlyphHashSetPtr hashSet)
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{
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hash->table = xcalloc (hashSet->size, sizeof (GlyphRefRec));
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if (!hash->table)
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return FALSE;
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hash->hashSet = hashSet;
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hash->tableEntries = 0;
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return TRUE;
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}
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Bool
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ResizeGlyphHash (GlyphHashPtr hash, CARD32 change, Bool global)
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{
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CARD32 tableEntries;
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GlyphHashSetPtr hashSet;
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GlyphHashRec newHash;
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GlyphRefPtr gr;
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GlyphPtr glyph;
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int i;
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int oldSize;
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CARD32 s;
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tableEntries = hash->tableEntries + change;
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hashSet = FindGlyphHashSet (tableEntries);
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if (hashSet == hash->hashSet)
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return TRUE;
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if (global)
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CheckDuplicates (hash, "ResizeGlyphHash top");
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if (!AllocateGlyphHash (&newHash, hashSet))
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return FALSE;
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if (hash->table)
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{
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oldSize = hash->hashSet->size;
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for (i = 0; i < oldSize; i++)
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{
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glyph = hash->table[i].glyph;
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if (glyph && glyph != DeletedGlyph)
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{
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s = hash->table[i].signature;
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gr = FindGlyphRef (&newHash, s, global, glyph->sha1);
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gr->signature = s;
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gr->glyph = glyph;
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++newHash.tableEntries;
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}
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}
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xfree (hash->table);
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}
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*hash = newHash;
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if (global)
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CheckDuplicates (hash, "ResizeGlyphHash bottom");
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return TRUE;
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}
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Bool
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ResizeGlyphSet (GlyphSetPtr glyphSet, CARD32 change)
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{
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return (ResizeGlyphHash (&glyphSet->hash, change, FALSE) &&
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ResizeGlyphHash (&globalGlyphs[glyphSet->fdepth], change, TRUE));
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}
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GlyphSetPtr
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AllocateGlyphSet (int fdepth, PictFormatPtr format)
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{
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GlyphSetPtr glyphSet;
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int size;
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if (!globalGlyphs[fdepth].hashSet)
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{
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if (!AllocateGlyphHash (&globalGlyphs[fdepth], &glyphHashSets[0]))
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return FALSE;
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}
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size = sizeof (GlyphSetRec);
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glyphSet = xcalloc (1, size);
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if (!glyphSet)
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return FALSE;
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if (!AllocateGlyphHash (&glyphSet->hash, &glyphHashSets[0]))
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{
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xfree (glyphSet);
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return FALSE;
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}
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glyphSet->refcnt = 1;
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glyphSet->fdepth = fdepth;
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glyphSet->format = format;
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return glyphSet;
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}
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int
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FreeGlyphSet (pointer value,
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XID gid)
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{
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GlyphSetPtr glyphSet = (GlyphSetPtr) value;
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if (--glyphSet->refcnt == 0)
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{
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CARD32 i, tableSize = glyphSet->hash.hashSet->size;
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GlyphRefPtr table = glyphSet->hash.table;
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GlyphPtr glyph;
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for (i = 0; i < tableSize; i++)
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{
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glyph = table[i].glyph;
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if (glyph && glyph != DeletedGlyph)
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FreeGlyph (glyph, glyphSet->fdepth);
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}
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if (!globalGlyphs[glyphSet->fdepth].tableEntries)
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{
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xfree (globalGlyphs[glyphSet->fdepth].table);
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globalGlyphs[glyphSet->fdepth].table = 0;
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globalGlyphs[glyphSet->fdepth].hashSet = 0;
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}
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else
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ResizeGlyphHash (&globalGlyphs[glyphSet->fdepth], 0, TRUE);
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xfree (table);
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dixFreePrivates(glyphSet->devPrivates);
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xfree (glyphSet);
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}
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return Success;
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}
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static void
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GlyphExtents (int nlist,
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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 (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);
|
|
}
|
|
}
|