f5e92542a1
Now, filters may only be set on source pictures when the filter is common to all screens. Also, like SetPictureTransform, ChangePictureFilter is now not called on source pictures.
318 lines
8.2 KiB
C
318 lines
8.2 KiB
C
/*
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* $Id$
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*
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* Copyright © 2002 Keith Packard
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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 Keith Packard not be used in
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* advertising or publicity pertaining to distribution of the software without
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* specific, written prior permission. Keith Packard makes no
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* representations about the suitability of this software for any purpose. It
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* is provided "as is" without express or implied warranty.
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*
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* KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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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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#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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static char **filterNames;
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static int nfilterNames;
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/*
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* standard but not required filters don't have constant indices
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*/
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int
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PictureGetFilterId (char *filter, int len, Bool makeit)
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{
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int i;
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char *name;
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char **names;
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if (len < 0)
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len = strlen (filter);
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for (i = 0; i < nfilterNames; i++)
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if (!CompareISOLatin1Lowered ((unsigned char *) filterNames[i], -1, (unsigned char *) filter, len))
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return i;
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if (!makeit)
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return -1;
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name = xalloc (len + 1);
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if (!name)
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return -1;
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memcpy (name, filter, len);
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name[len] = '\0';
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if (filterNames)
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names = xrealloc (filterNames, (nfilterNames + 1) * sizeof (char *));
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else
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names = xalloc (sizeof (char *));
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if (!names)
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{
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xfree (name);
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return -1;
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}
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filterNames = names;
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i = nfilterNames++;
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filterNames[i] = name;
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return i;
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}
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static Bool
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PictureSetDefaultIds (void)
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{
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/* careful here -- this list must match the #define values */
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if (PictureGetFilterId (FilterNearest, -1, TRUE) != PictFilterNearest)
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return FALSE;
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if (PictureGetFilterId (FilterBilinear, -1, TRUE) != PictFilterBilinear)
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return FALSE;
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if (PictureGetFilterId (FilterFast, -1, TRUE) != PictFilterFast)
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return FALSE;
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if (PictureGetFilterId (FilterGood, -1, TRUE) != PictFilterGood)
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return FALSE;
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if (PictureGetFilterId (FilterBest, -1, TRUE) != PictFilterBest)
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return FALSE;
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if (PictureGetFilterId (FilterConvolution, -1, TRUE) != PictFilterConvolution)
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return FALSE;
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return TRUE;
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}
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char *
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PictureGetFilterName (int id)
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{
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if (0 <= id && id < nfilterNames)
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return filterNames[id];
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else
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return 0;
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}
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static void
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PictureFreeFilterIds (void)
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{
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int i;
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for (i = 0; i < nfilterNames; i++)
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xfree (filterNames[i]);
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xfree (filterNames);
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nfilterNames = 0;
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filterNames = 0;
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}
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_X_EXPORT int
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PictureAddFilter (ScreenPtr pScreen,
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char *filter,
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PictFilterValidateParamsProcPtr ValidateParams)
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{
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PictureScreenPtr ps = GetPictureScreen(pScreen);
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int id = PictureGetFilterId (filter, -1, TRUE);
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int i;
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PictFilterPtr filters;
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if (id < 0)
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return -1;
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/*
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* It's an error to attempt to reregister a filter
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*/
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for (i = 0; i < ps->nfilters; i++)
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if (ps->filters[i].id == id)
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return -1;
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if (ps->filters)
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filters = xrealloc (ps->filters, (ps->nfilters + 1) * sizeof (PictFilterRec));
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else
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filters = xalloc (sizeof (PictFilterRec));
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if (!filters)
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return -1;
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ps->filters = filters;
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i = ps->nfilters++;
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ps->filters[i].name = PictureGetFilterName (id);
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ps->filters[i].id = id;
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ps->filters[i].ValidateParams = ValidateParams;
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return id;
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}
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_X_EXPORT Bool
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PictureSetFilterAlias (ScreenPtr pScreen, char *filter, char *alias)
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{
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PictureScreenPtr ps = GetPictureScreen(pScreen);
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int filter_id = PictureGetFilterId (filter, -1, FALSE);
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int alias_id = PictureGetFilterId (alias, -1, TRUE);
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int i;
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if (filter_id < 0 || alias_id < 0)
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return FALSE;
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for (i = 0; i < ps->nfilterAliases; i++)
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if (ps->filterAliases[i].alias_id == alias_id)
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break;
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if (i == ps->nfilterAliases)
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{
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PictFilterAliasPtr aliases;
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if (ps->filterAliases)
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aliases = xrealloc (ps->filterAliases,
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(ps->nfilterAliases + 1) *
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sizeof (PictFilterAliasRec));
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else
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aliases = xalloc (sizeof (PictFilterAliasRec));
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if (!aliases)
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return FALSE;
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ps->filterAliases = aliases;
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ps->filterAliases[i].alias = PictureGetFilterName (alias_id);
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ps->filterAliases[i].alias_id = alias_id;
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ps->nfilterAliases++;
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}
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ps->filterAliases[i].filter_id = filter_id;
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return TRUE;
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}
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PictFilterPtr
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PictureFindFilter (ScreenPtr pScreen, char *name, int len)
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{
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PictureScreenPtr ps = GetPictureScreen(pScreen);
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int id = PictureGetFilterId (name, len, FALSE);
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int i;
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if (id < 0)
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return 0;
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/* Check for an alias, allow them to recurse */
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for (i = 0; i < ps->nfilterAliases; i++)
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if (ps->filterAliases[i].alias_id == id)
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{
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id = ps->filterAliases[i].filter_id;
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i = 0;
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}
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/* find the filter */
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for (i = 0; i < ps->nfilters; i++)
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if (ps->filters[i].id == id)
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return &ps->filters[i];
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return 0;
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}
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static Bool
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convolutionFilterValidateParams (PicturePtr pPicture,
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int filter,
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xFixed *params,
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int nparams)
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{
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if (nparams < 3)
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return FALSE;
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if (xFixedFrac (params[0]) || xFixedFrac (params[1]))
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return FALSE;
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nparams -= 2;
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if ((xFixedToInt (params[0]) * xFixedToInt (params[1])) > nparams)
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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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PictureSetDefaultFilters (ScreenPtr pScreen)
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{
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if (!filterNames)
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if (!PictureSetDefaultIds ())
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return FALSE;
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if (PictureAddFilter (pScreen, FilterNearest, 0) < 0)
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return FALSE;
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if (PictureAddFilter (pScreen, FilterBilinear, 0) < 0)
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return FALSE;
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if (!PictureSetFilterAlias (pScreen, FilterNearest, FilterFast))
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return FALSE;
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if (!PictureSetFilterAlias (pScreen, FilterBilinear, FilterGood))
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return FALSE;
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if (!PictureSetFilterAlias (pScreen, FilterBilinear, FilterBest))
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return FALSE;
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if (PictureAddFilter (pScreen, FilterConvolution, convolutionFilterValidateParams) < 0)
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return FALSE;
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return TRUE;
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}
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void
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PictureResetFilters (ScreenPtr pScreen)
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{
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PictureScreenPtr ps = GetPictureScreen(pScreen);
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xfree (ps->filters);
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xfree (ps->filterAliases);
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PictureFreeFilterIds ();
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}
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int
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SetPictureFilter (PicturePtr pPicture, char *name, int len, xFixed *params, int nparams)
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{
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PictFilterPtr pFilter;
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xFixed *new_params;
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int i, s, result;
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pFilter = PictureFindFilter (screenInfo.screens[0], name, len);
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for (s = 0; s < screenInfo.numScreens; s++) {
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if (PictureFindFilter (screenInfo.screens[s], name, len) != pFilter)
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return BadMatch;
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}
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if (!pFilter)
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return BadName;
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if (pFilter->ValidateParams)
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{
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if (!(*pFilter->ValidateParams) (pPicture, pFilter->id, params, nparams))
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return BadMatch;
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}
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else if (nparams)
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return BadMatch;
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if (nparams != pPicture->filter_nparams)
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{
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new_params = xalloc (nparams * sizeof (xFixed));
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if (!new_params)
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return BadAlloc;
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xfree (pPicture->filter_params);
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pPicture->filter_params = new_params;
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pPicture->filter_nparams = nparams;
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}
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for (i = 0; i < nparams; i++)
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pPicture->filter_params[i] = params[i];
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pPicture->filter = pFilter->id;
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if (pPicture->pDrawable) {
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ScreenPtr pScreen = pPicture->pDrawable->pScreen;
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PictureScreenPtr ps = GetPictureScreen(pScreen);
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result = (*ps->ChangePictureFilter) (pPicture, pPicture->filter,
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params, nparams);
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return result;
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}
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return Success;
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}
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