Manual Pages for UNIX Operating System command usage for man XvSetPortAttribute

libXv Functions                           XvSetPortAttribute(3xv)



NAME
     XvSetPortAttribute - sets an attribute of a video port

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

     int XvSetPortAttribute(Display *dpy, XvPortID port,
                            Atom attribute, int value);

ARGUMENTS
     dpy            Specifies the connection to the X server.

     port           Specifies the port for which the attribute is
                    to be used.

     attribute      Identifies the port attribute to  be  set  by
                    this  request.   Can  be  one  of  the  table
                    entries under the column "String," below.

     value          Identifies the value to which attribute is to
                    be  set.   Can  be  one  of the table entries
                    under the column "Type," below.

DESCRIPTION
     XvSetPortAttribute(3xv)
      permits a client to set the  port  attribute  to  specified
     values.  This request supports the following values:

     ____________________________________________________

     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

     The supplied encoding must be one of  the  encodings  listed
     for the adaptor, otherwise an Encoding error results.

     If the adaptor does not support the exact  hue,  saturation,
     brightness, and contrast levels supplied, the closest levels
     supported are assumed.  Use XvGetPortAttribute(3xv) to query
     the resulting levels.

     When an  XvSetPortAttribute(3xv)  request  is  processed,  a
     XvPortNotify(3xv)  event  is  generated for all clients that
     have  requested   notification   of   port   changes   using
     XvSelectPortNotify(3xv).




X Version 11        Last change: libXv 1.0.5                    1






libXv Functions                           XvSetPortAttribute(3xv)



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

     [XvBadExtension]
             Returned if the Xv extension is unavailable.

     [XvBadAlloc]
             Returned if XvSelectVideoNotify(3xv) failed to allo-
             cate memory to process the request.

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

     [XvBadEncoding]
             Generated if an encoding is specified that does  not
             exist.

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

SEE ALSO
     XvGetPortAttribute(3xv),         XvQueryPortAttributes(3xv),
     XvSelectPortNotify(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