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XvSetPortAttribute(3)		libXv Functions		 XvSetPortAttribute(3)

NAME
       XvSetPortAttribute - sets an attribute of a video port

SYNOPSIS
       #include <X11/extensions/Xvlib.h>

       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(3)
	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 adap‐
       tor, 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(3) to query the resulting levels.

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

RETURN VALUES
       [Success]
	       Returned if XvSetPortAttribute(3) completed successfully.

       [XvBadExtension]
	       Returned if the Xv extension is unavailable.

       [XvBadAlloc]
	       Returned if XvSelectVideoNotify(3) failed to allocate 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(3), XvQueryPortAttributes(3), XvSelectPortNotify(3),
       XvPortNotify(3)

X Version 11			  libXv 1.0.6		 XvSetPortAttribute(3)

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