Manual Pages for UNIX Operating System command usage for man XvQueryBestSize

libXv Functions                              XvQueryBestSize(3xv)



NAME
     XvQueryBestSize - determine the optimum drawable region size

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

     int XvQueryBestSize(Display *dpy, XvPort port, Bool motion
                         unsigned int vw, unsigned int vh,
                         unsigned int dw, unsigned int dh,
                         unsigned int *p_dw, unsigned int *p_dh);

ARGUMENTS
     dpy            Specifies the connection to the X server.

     port           Defines the port associated with the  display
                    and  adaptor for which the optimum size is to
                    be calculated.

     motion         Specifies True if the destination size  needs
                    to support full motion, and False if the des-
                    tination size need only support still images.

     vw,vh          Specifies the size of the source video region
                    desired.

     dw,dh          Specifies the size of the  destination  draw-
                    able region desired.

     p_dw,p_dh      Pointers to  where  the  closest  destination
                    sizes supported by the server are returned.

DESCRIPTION
     Some ports may be able to scale incoming or outgoing  video.
     XvQueryBestSize(3xv)  returns the size of the closest desti-
     nation  region  that  is  supported  by  the  adaptor.   The
     returned size is guaranteed to be smaller than the requested
     size if a smaller size is supported.

RETURN VALUES
     [Success]
             Returned if XvQueryBestSize(3xv) completed  success-
             fully.

     [XvBadExtension]
             Returned if the Xv extension is unavailable.

     [XvBadAlloc]
             Returned if XvQueryBestSize(3xv) failed to  allocate
             memory to process the request.





X Version 11        Last change: libXv 1.0.5                    1






libXv Functions                              XvQueryBestSize(3xv)



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


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