XvQueryExtension(3)

Name

       XvQueryExtension - return version and release of extension

Syntax

       #include <X11/extensions/Xvlib.h>

       XvQueryExtension(dpy, p_version, p_release,
            p_request_base, p_event_base, p_error_base)

       Display *dpy;
       unsigned int *p_version, *p_release;
       unsigned int *p_request_base, *p_event_base, *p_error_base;

Arguments

       p_version      Pointer  to  where  the current version number of the Xv
                      video extension is written.

       p_release      Pointer to where the release  number  of  the  Xv  video
                      extension is written.

       p_request_base Pointer  to  where the extension major request number is
                      returned

       p_event_base   Pointer to where the extension event base is returned

       p_error_base   Pointer to where the extension error base is returned

Description

       XvQueryExtension(3) returns the version and release numbers for the  Xv
       video  extension  currently  loaded on the system.  The extension major
       request number, event base, and error base are also returned.

Returned Values

       [Success]
               Returned if XvQueryExtension(3) completed successfully.

       [XvBadExtension]
               Returned if the Xv video extension is  not  available  for  the
               named display.

       [XvBadAlloc]
               Returned  if  XvQueryExtension(3)  failed to allocate memory to
               process the request.

X Version 11                      libXv 1.0.3              XvQueryExtension(3)