Initial revisionXORG-RELEASE-1-BASEXEVIE-MERGEXEVIE-BASEXORG-STABLEXINERAMA_2XEVIE

1 files changed, 150 insertions, 0 deletions

diff --git a/src/Filter.c b/src/Filter.c
new file mode 100644
index 0000000..dfc5480
--- /dev/null
+++ b/src/Filter.c
@@ -0,0 +1,150 @@
+/*
+ * $XFree86: xc/lib/Xrender/Filter.c,v 1.1 2002/09/26 02:56:52 keithp Exp $
+ *
+ * Copyright © 2002 Keith Packard, member of The XFree86 Project, 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 Keith Packard not be used in
+ * advertising or publicity pertaining to distribution of the software without
+ * specific, written prior permission.  Keith Packard makes no
+ * representations about the suitability of this software for any purpose.  It
+ * is provided "as is" without express or implied warranty.
+ *
+ * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL KEITH PACKARD 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.
+ */
+
+#include "Xrenderint.h"
+ 
+XFilters *
+XRenderQueryFilters (Display *dpy, Drawable drawable)
+{
+    XExtDisplayInfo		*info = XRenderFindDisplay (dpy);
+    XRenderInfo			*xri;
+    xRenderQueryFiltersReq	*req;
+    xRenderQueryFiltersReply	rep;
+    XFilters			*filters;
+    char			*name;
+    char			len;
+    int				i;
+    long			nbytes, nbytesAlias, nbytesName;
+    
+    if (!XextHasExtension (info))
+	return 0;
+
+    if (!XRenderQueryFormats (dpy))
+	return 0;
+
+    xri = (XRenderInfo *) info->data;
+    if (xri->minor_version < 6)
+	return 0;
+    
+    LockDisplay (dpy);
+    GetReq (RenderQueryFilters, req);
+    req->reqType = info->codes->major_opcode;
+    req->renderReqType = X_RenderQueryFilters;
+    req->drawable = drawable;
+    if (!_XReply (dpy, (xReply *) &rep, 0, xFalse))
+    {
+	UnlockDisplay (dpy);
+	SyncHandle ();
+	return 0;
+    }
+    /*
+     * Compute total number of bytes for filter names
+     */
+    nbytes = (long)rep.length << 2;
+    nbytesAlias = rep.numAliases * 2;
+    if (rep.numAliases & 1)
+	nbytesAlias += 2;
+    nbytesName = nbytes - nbytesAlias;
+    
+    /*
+     * Allocate one giant block for the whole data structure
+     */
+    filters = Xmalloc (sizeof (XFilters) +
+		       rep.numFilters * sizeof (char *) +
+		       rep.numAliases * sizeof (short) +
+		       nbytesName);
+
+    if (!filters)
+    {
+	_XEatData (dpy, (unsigned long) rep.length << 2);
+	UnlockDisplay (dpy);
+	SyncHandle ();
+	return 0;
+    }
+
+    /*
+     * Layout:
+     *	XFilters
+     *	numFilters  char * pointers to filter names
+     *	numAliases  short alias values
+     *	nbytesName  char strings
+     */
+    
+    filters->nfilter = rep.numFilters;
+    filters->nalias = rep.numAliases;
+    filters->filter = (char **) (filters + 1);
+    filters->alias = (short *) (filters->filter + rep.numFilters);
+    name = (char *) (filters->alias + rep.numAliases);
+
+    /*
+     * Read the filter aliases
+     */
+    _XRead16Pad (dpy, filters->alias, 2 * rep.numAliases);
+
+    /*
+     * Read the filter names
+     */
+    for (i = 0; i < rep.numFilters; i++)
+    {
+	int	l;
+	_XRead (dpy, &len, 1);
+	l = len & 0xff;
+	filters->filter[i] = name;
+	_XRead (dpy, name, l);
+	name[l] = '\0';
+	name += l + 1;
+    }
+    i = name - (char *) (filters->alias + rep.numAliases);
+
+    if (i & 3)
+	_XEatData (dpy, 4 - (i & 3));
+    
+    UnlockDisplay (dpy);
+    return filters;
+}
+
+void
+XRenderSetPictureFilter  (Display   *dpy,
+			  Picture   picture,
+			  char	    *filter,
+			  XFixed    *params,
+			  int	    nparams)
+{
+    XExtDisplayInfo		*info = XRenderFindDisplay (dpy);
+    xRenderSetPictureFilterReq	*req;
+    int				nbytes = strlen (filter);
+
+    RenderSimpleCheckExtension (dpy, info);
+    LockDisplay(dpy);
+    GetReq(RenderSetPictureFilter, req);
+    req->reqType = info->codes->major_opcode;
+    req->renderReqType = X_RenderSetPictureFilter;
+    req->picture = picture;
+    req->nbytes = nbytes;
+    req->length += ((nbytes + 3) >> 2) + nparams;
+    Data (dpy, filter, nbytes);
+    Data32 (dpy, params, nparams << 2);
+    UnlockDisplay(dpy);
+    SyncHandle();
+}