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 re- quest. Control atoms are obtained using the XInternAtom re- quest 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 at- tribute 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 at- tribute supported by the adaptor. SEE ALSO XvSetPortAttribute(3), XvPortNotify(3) X Version 11 libXv 1.0.13 XvGetPortAttribute(3)
NAME | SYNOPSIS | ARGUMENTS | DESCRIPTION | RETURN VALUES | DIAGNOSTICS | SEE ALSO
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