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xvgetportattribute(3x) [xfree86 man page]

XvGetPortAttribute(3X)													    XvGetPortAttribute(3X)

Name
       XvGetPortAttribute - return current port attribute value

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

       XvGetPortAttribute(dpy, port, attribute, p_value)

       Display *dpy;
       XvPortID port;
       Atom attribute;
       int *p_value;

Arguments
       dpy     Specifies the display screen on which the X Server is to accept requests from X clients.  If the display option is not specified, X
	       uses the display screen specified by your DISPLAY environment variable.	The display option has the format hostname:number.   Using
	       two colons (::) instead of one (:) indicates that DECnet is to be used for transport.

       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(3X) 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

Returned Values
       [Success]
	       Returned if XvGetPortAttribute(3X) completed successfully.

       [XvBadExtension]
	       Returned if the Xv extension is unavailable.

       [XvBadAlloc]
	       Returned if XvGetPortAttribute(3X) failed to allocate 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(3X), XvPortNotify(3X)

XFree86 							   Version 4.7.0					    XvGetPortAttribute(3X)

Check Out this Related Man Page

XvGetPortAttribute(3)                                             libXv Functions                                            XvGetPortAttribute(3)

NAME

       XvGetPortAttribute - return current port attribute value

SYNOPSIS

       #include <X11/extensions/Xvlib.h>

       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(3) 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(3) completed successfully.

       [XvBadExtension]
               Returned if the Xv extension is unavailable.

       [XvBadAlloc]
               Returned if XvGetPortAttribute(3) failed to allocate 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(3), XvPortNotify(3)

X Version 11                                                        libXv 1.0.7                                              XvGetPortAttribute(3)
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