Manual Pages for UNIX Operating System command usage for man XvGetPortAttribute

libXv Functions                           XvGetPortAttribute(3xv)



NAME
     XvGetPortAttribute - return current port attribute value

SYNOPSIS
     cc [ flag... ] file... -lXv [ library... ]
     #include 

     int XvGetPortAttribute(Display *dpy, XvPortID port,
                            Atom attribute, int p_value);

ARGUMENTS
     dpy         Specifies the connection to the X server.

     port        Specifies the port, associated  with  the  given
                 display,  for  which the attribute values are to
                 be returned.

     attribute   An atom that  identifies  the  attribute  to  be
                 queried  by  this  request.   Control  atoms are
                 obtained using the XInternAtom  request  with  a
                 string from the following table.

     p_value     Pointer to  the  location  where  the  attribute
                 value is written on return.

DESCRIPTION
     XvGetPortAttribute(3xv) returns the  current  value  of  the
     requested  port  attribute  in  the  integer  pointed  to by
     p_value.  The attribute is identified  using  an  Atom  that
     equates  to the attribute name.  The XInternAtom request can
     be used with one of the strings below to return  a  matching
     Atom.

     ____________________________________________________

     Attribute String   Type             Default
     ____________________________________________________
     "XV_ENCODING"      XvEncodingID     Server dependent
     "XV_HUE"           [-1000...1000]   0
     "XV_SATURATION"    [-1000...1000]   0
     "XV_BRIGHTNESS"    [-1000...1000]   0
     "XV_CONTRAST"      [-1000...1000]   0

RETURN VALUES
     [Success]
             Returned if XvGetPortAttribute(3xv)  completed  suc-
             cessfully.

     [XvBadExtension]
             Returned if the Xv extension is unavailable.

     [XvBadAlloc]



X Version 11        Last change: libXv 1.0.5                    1






libXv Functions                           XvGetPortAttribute(3xv)



             Returned if XvGetPortAttribute(3xv) failed to  allo-
             cate memory to process the request.

DIAGNOSTICS
     [XvBadPort]
             Generated if the requested port does not exist.

     [BadMatch]
             Generated if the requested attribute atom  does  not
             specify an attribute supported by the adaptor.

SEE ALSO
     XvSetPortAttribute(3xv), XvPortNotify(3xv)


ATTRIBUTES
     See attributes(5) for descriptions of the  following  attri-
     butes:

     ____________________________________________________________
    |       ATTRIBUTE TYPE        |       ATTRIBUTE VALUE       |
    |_____________________________|_____________________________|
    | Availability                | x11/library/libxv           |
    |_____________________________|_____________________________|
    | Interface Stability         | Volatile                    |
    |_____________________________|_____________________________|
    | MT-Level                    | See XInitThreads(3X11)      |
    |_____________________________|_____________________________|



























X Version 11        Last change: libXv 1.0.5                    2