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XvQueryExtension(3) XvQueryExtension(3)
Name
XvQueryExtension - return version and release of extension
Syntax
#include <X11/extensions/Xvlib.h>
XvQueryExtension(Display *dpy, unsigned int *p_version,
unsigned int *p_revision,
unsigned int *p_request_base,
unsigned int *p_event_base,
unsigned int *p_error_base);
Arguments
dpy Specifies the connection to the X server.
p_version Pointer to where the current version number of the Xv video extension is written.
p_revision Pointer to where the revision 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 1.0.4 XvQueryExtension(3)
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