65 lines
1.9 KiB
Groff
65 lines
1.9 KiB
Groff
.TH XvGrabPort __libmansuffix__ __vendorversion__
|
|
.\" $XFree86: xc/doc/man/Xv/XvGrabPort.man,v 1.4 1999/03/02 11:49:14 dawes Exp $
|
|
.SH Name
|
|
XvGrabPort \- lock port for exclusive use by client
|
|
.\"
|
|
.SH Syntax
|
|
.B #include <X11/extensions/Xvlib.h>
|
|
.sp 1l
|
|
.B XvGrabPort(\fIdpy, port, time)\fR
|
|
.sp 1l
|
|
.B Display \fI*dpy;\fR
|
|
.br
|
|
.B XvPortID
|
|
.I port;
|
|
.br
|
|
.B Time
|
|
.I time;
|
|
.\"
|
|
.SH Arguments
|
|
.\"
|
|
.IP \fIdpy\fR 8
|
|
Specifies the connection to the X server.
|
|
.IP \fIport\fR 8
|
|
Defines the port to be grabbed.
|
|
.IP \fItime\fR 8
|
|
Specifies the request timestamp.
|
|
.\"
|
|
.SH Description
|
|
.\"
|
|
XvGrabPort(__libmansuffix__) grabs a port. Once a client grabs a port,
|
|
only that client can make video requests
|
|
to that port.
|
|
.PP
|
|
If the time is before the current port time, the XvGrabPort request is
|
|
ignored and XvInvalidTime is returned. If the port is already grabbed by
|
|
another client, XvAlreadyGrabbed is returned. Otherwise it returns a
|
|
status of \fISuccess\fR. The port time is updated when the following
|
|
requests are processed: XvGrabPort(__libmansuffix__), XvUngrabPort(__libmansuffix__),
|
|
XvPutVideo(__libmansuffix__), XvPutStill(__libmansuffix__), XvGetVideo(__libmansuffix__), XvGetStill(__libmansuffix__).
|
|
.PP
|
|
If the port is actively processing video for another client, the
|
|
video is preempted, and an XvVideoNotify event with detail XvPreempted
|
|
is generated for its drawable.
|
|
.\"
|
|
.SH Returned Values
|
|
.IP [Success] 8
|
|
Returned if XvGrabPort(__libmansuffix__) completed successfully.
|
|
.IP [XvInvalidTime] 8
|
|
Returned if requested time is older than the current port time.
|
|
.IP [XvAlreadyGrabbed] 8
|
|
Returned if the port is already grabbed by another client.
|
|
.IP [XvBadExtension] 8
|
|
Returned if the Xv extension is unavailable.
|
|
.IP [XvBadAlloc] 8
|
|
Returned if XvGrabPort(__libmansuffix__) failed to allocate memory to process
|
|
the request.
|
|
.SH Diagnostics
|
|
.IP [XvBadPort] 15
|
|
Generated if the requested port does not exist.
|
|
.\"
|
|
.SH See Also
|
|
.\"
|
|
XvUngrabPort(__libmansuffix__) XvVideoNotify(__libmansuffix__)
|
|
.br
|