Inside Macintosh: QuickTime /

Chapter 2 - Movie Toolbox / Movie Toolbox Reference

Time Base Functions / Creating and Disposing of Time Bases

SetTimeBaseMasterClock

You can use the SetTimeBaseMasterClock function to assign a clock component to a time base. A time base derives its time from either a clock component or from another time base. Do not use this function to assign a clock to a movie's time base.

pascal void SetTimeBaseMasterClock (TimeBase slave, 
                                    Component clockMeister,
                                    const TimeRecord *slaveZero); 

slave

Specifies the time base for this operation. Your application obtains this time base identifier from the NewTimeBase function (described on page 2-297).

clockMeister

Specifies the clock component to be assigned to this time base. Your application can obtain this component identifier from the Component Manager's FindNextComponent routine (see the chapter "Component Manager" in Inside Macintosh: More Macintosh Toolbox
for more information about this routine).

slaveZero

Contains a pointer to the time, in the clock's time scale, that corresponds to a 0 time value for the slave time base. This parameter allows you to set an offset between the time base and the clock component. Set this parameter to nil if there is no offset.

SPECIAL CONSIDERATIONS

The SetTimeBaseMasterClock function cannot be called at interrupt time.

ERROR CODES

invalidMovie

-2010

This movie is corrupted or invalid

SEE ALSO

You can use the GetTimeBaseMasterClock function, which is described in the next section, to determine the clock component that is assigned to a time base.