Xext: Move MIT-SHM 'ShmDesc' to shmint.h

This data structure is required to use shared memory objects in any
extension. That includes the Xv extension, which (before this patch)
duplicated the definition of this structure in its own code.

Signed-off-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/Xext/shmint.h b/Xext/shmint.h
index fa6941c90..9002ce501 100644
--- a/Xext/shmint.h
+++ b/Xext/shmint.h
@@ -56,6 +56,15 @@ typedef struct _ShmFuncs {
     void (*PutImage) (XSHM_PUT_IMAGE_ARGS);
 } ShmFuncs, *ShmFuncsPtr;
 
+typedef struct _ShmDesc {
+    struct _ShmDesc *next;
+    int shmid;
+    int refcnt;
+    char *addr;
+    Bool writable;
+    unsigned long size;
+} ShmDescRec, *ShmDescPtr;
+
 extern _X_EXPORT void
  ShmRegisterFuncs(ScreenPtr pScreen, ShmFuncsPtr funcs);