_X_EXPORT Bool
PictureSetFilterAlias (ScreenPtr pScreen, char *filter, char *alias)
{
PictureScreenPtr ps = GetPictureScreen(pScreen);
int filter_id = PictureGetFilterId (filter, -1, FALSE);
int alias_id = PictureGetFilterId (alias, -1, TRUE);
int i;
if (filter_id < 0 || alias_id < 0)
return FALSE;
for (i = 0; i < ps->nfilterAliases; i++)
if (ps->filterAliases[i].alias_id == alias_id)
break;
if (i == ps->nfilterAliases)
{
PictFilterAliasPtr aliases;
if (ps->filterAliases)
aliases = xrealloc (ps->filterAliases,
(ps->nfilterAliases + 1) *
sizeof (PictFilterAliasRec));
else
aliases = xalloc (sizeof (PictFilterAliasRec));
if (!aliases)
return FALSE;
ps->filterAliases = aliases;
ps->filterAliases[i].alias = PictureGetFilterName (alias_id);
ps->filterAliases[i].alias_id = alias_id;
ps->nfilterAliases++;
}
ps->filterAliases[i].filter_id = filter_id;
return TRUE;
}
_X_EXPORT int
PictureAddFilter (ScreenPtr pScreen,
char *filter,
PictFilterValidateParamsProcPtr ValidateParams)
{
PictureScreenPtr ps = GetPictureScreen(pScreen);
int id = PictureGetFilterId (filter, -1, TRUE);
int i;
PictFilterPtr filters;
if (id < 0)
return -1;
/*
* It's an error to attempt to reregister a filter
*/
for (i = 0; i < ps->nfilters; i++)
if (ps->filters[i].id == id)
return -1;
if (ps->filters)
filters = xrealloc (ps->filters, (ps->nfilters + 1) * sizeof (PictFilterRec));
else
filters = xalloc (sizeof (PictFilterRec));
if (!filters)
return -1;
ps->filters = filters;
i = ps->nfilters++;
ps->filters[i].name = PictureGetFilterName (id);
ps->filters[i].id = id;
ps->filters[i].ValidateParams = ValidateParams;
return id;
}
PictFilterPtr
PictureFindFilter(ScreenPtr pScreen, char *name, int len)
{
PictureScreenPtr ps = GetPictureScreen(pScreen);
int id = PictureGetFilterId(name, len, FALSE);
int i;
if (id < 0)
return 0;
/* Check for an alias, allow them to recurse */
for (i = 0; i < ps->nfilterAliases; i++)
if (ps->filterAliases[i].alias_id == id) {
id = ps->filterAliases[i].filter_id;
i = 0;
}
/* find the filter */
for (i = 0; i < ps->nfilters; i++)
if (ps->filters[i].id == id)
return &ps->filters[i];
return 0;
}
static Bool
PictureSetDefaultIds (void)
{
/* careful here -- this list must match the #define values */
if (PictureGetFilterId (FilterNearest, -1, TRUE) != PictFilterNearest)
return FALSE;
if (PictureGetFilterId (FilterBilinear, -1, TRUE) != PictFilterBilinear)
return FALSE;
if (PictureGetFilterId (FilterFast, -1, TRUE) != PictFilterFast)
return FALSE;
if (PictureGetFilterId (FilterGood, -1, TRUE) != PictFilterGood)
return FALSE;
if (PictureGetFilterId (FilterBest, -1, TRUE) != PictFilterBest)
return FALSE;
if (PictureGetFilterId (FilterConvolution, -1, TRUE) != PictFilterConvolution)
return FALSE;
return TRUE;
}