@class NSMutableArray; @interface VCIDRSchedulerPeriodGroup : NSObject { unsigned int _framesPerBasePeriod; NSMutableArray *_streams; NSMutableArray *_schedulerItems; } @property (readonly, nonatomic) unsigned int basePeriodCount; - (void)dealloc; - (id)description; - (void)addStream:(id)a0; - (id)computeScheduleItemList; - (void)computeStreamsIDRPosition; - (id)initWithPeriodCount:(unsigned int)a0 framesPerBasePeriod:(unsigned int)a1; @end