dix: split off PropertyRec's data field to separate record

Doing it the same way several extensions (eg. XI and randr) do it,
so we can consolidate things here.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>

include/meson.build

@@ -458,6 +458,7 @@ if build_xorg
             'pixmapstr.h',
             'privates.h',
             'property.h',
+            'property_value.h',
             'ptrveloc.h',
             'region.h',
             'regionstr.h',

include/property_value.h

@@ -0,0 +1,21 @@
+/* SPDX-License-Identifier: MIT OR X11
+ *
+ * Copyright © 2024 Enrico Weigelt, metux IT consult <info@metux.net>
+ *
+ * This header is part of the SDK / public driver API
+ */
+#ifndef _XORG_SDK_PROPERTY_VALUE_H
+#define _XORG_SDK_PROPERTY_VALUE_H
+
+#include <stdint.h>
+
+#include "misc.h" // ATOM type
+
+typedef struct _PropertyValue {
+    ATOM type;                  /* ignored by server */
+    uint32_t format;            /* format of data for swapping - 8,16,32 */
+    uint32_t size;              /* size of data in (format/8) bytes */
+    void *data;                 /* private to client */
+} PropertyValueRec, *PropertyValuePtr;
+
+#endif /* _XORG_SDK_PROPERTY_VALUE_H */

include/propertyst.h

@@ -46,9 +46,12 @@ SOFTWARE.
 
 #ifndef PROPERTYSTRUCT_H
 #define PROPERTYSTRUCT_H
+
 #include "misc.h"
 #include "property.h"
 #include "privates.h"
+#include "property_value.h"
+
 /*
  *   PROPERTY -- property element
  */
@@ -56,10 +59,7 @@ SOFTWARE.
 typedef struct _Property {
     struct _Property *next;
     ATOM propertyName;
-    ATOM type;                  /* ignored by server */
-    uint32_t format;            /* format of data for swapping - 8,16,32 */
-    uint32_t size;              /* size of data in (format/8) bytes */
-    void *data;                 /* private to client */
+    PropertyValueRec value;
     PrivateRec *devPrivates;
 } PropertyRec;