CMBufferQueueTestTrigger(_:triggerToken:)

Declaration

func CMBufferQueueTestTrigger(_ queue: CMBufferQueue, triggerToken: CMBufferQueueTriggerToken) -> Bool

Parameters

• queue:

  CMBufferQueue on which the trigger is tested.

• triggerToken:

  Trigger to test.

Return Value

A Boolean indicating whether the trigger condition is True.

Discussion

CMBufferQueue always returns the condition’s current status. The trigger callback will only be called when the condition goes from false to true. The triggerToken must be one that has been installed on this queue.

See Also

Managing Triggers

• CMBufferQueueInstallTriggerHandler(_:_:_:_:_:)
• CMBufferQueueInstallTriggerHandlerWithIntegerThreshold(_:_:_:_:_:)
• CMBufferQueueTriggerHandler
• CMBufferQueueTriggerToken
• Buffer Trigger Conditions
• CMBufferQueueInstallTrigger(_:callback:refcon:condition:time:triggerTokenOut:)
• CMBufferQueueInstallTriggerWithIntegerThreshold(_:callback:refcon:condition:threshold:triggerTokenOut:)
• CMBufferQueueTriggerCallback
• CMBufferQueueTriggerCondition