XSGIvcSetOutputPhaseSCH(3)

     NAME
          XSGIvcSetOutputPhaseSCH, XSGIvcQueryOutputPhaseSCH - Video
          SCH Phase Operations

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

          void XSGIvcSetOutputPhaseSCH(Display *display,
              int screen,
              int channel,
              int phaseSCH)

          Status XSGIvcQueryOutputPhaseSCH(Display *display,
              int screen,
              int channel,
              int *phaseSCHReturn)

     PARAMETERS
          display     Specifies the connection to the X server.

          screen      Specifies the screen of the X server.

          channel     Specifies the channel number.

          phaseSCH    The value to which the SCH phase should be set.

          phaseSCHReturn
                      Returns the value to which the SCH phase is set.


     DESCRIPTION
          These functions allow alterations and query of subcarrier to
          horizontal phase.  This function is used on composite video
          channels.  The value specified is in degrees:

            1 unit = 0.1 degrees

          Accuracy is not guaranteed because of variations in
          hardware, but will be close to the value you specify.
          Precision depends upon server implementation and is not
          guaranteed to be uniform across the full range.  You should
          get the current setting from the server after a set
          operation to determine the value to which the server is set.

          The function XSGIvcQueryChannelInfo returns the range of
          values that are valid on this channel.

          XSGIvcSetOutputPhaseSCH sets the video SCH phase of a
          channel.

          XSGIvcQueryOutputPhaseSCH returns the current settings of
          the SCH phase of a channel.
     EVENTS
          When this control is altered, the server generates a
          OutputPhaseSCHNotify event.


     RETURNED VALUE
          The XSGIvcQueryOutputPhaseSCH function returns FALSE upon
          failure, TRUE upon success.  Parameter errors are reported
          via BadValue or BadMatch.


     SEE ALSO
          XSGIvc