Name

       AuMakeChangeStateAction - initialize an action

Synopsis

       #include <audio/audiolib.h>

       AuMakeChangeStateAction(action,  trigger_state,  trigger_prev_state, trigger_reason, flow,
       element_num, new_state)
           AuElementAction action; /* RETURN */
           unsigned char trigger_state;
           unsigned char trigger_prev_state;
           unsigned char trigger_reason;
           AuFlowID flow;
           unsigned char element_num;
           unsigned char new_state;

Arguments

       action    Returns the initialized action.

       trigger_state
                 Specifies the state that triggers  the  action.   This  must  be  one  of  these
                 constants: AuStateStop, AuStateStart, AuStatePause, or AuStateAny.

       trigger_prev_state
                 Specifies  the  previous  state  for  the  trigger.   This  must be one of these
                 constants: AuStateStop, AuStateStart, AuStatePause, or AuStateAny.

       trigger_reason
                 Specifies the reason for the action.  This  must  be  one  of  these  constants:
                 AuReasonUser, AuReasonUnderrun, AuReasonOverrun, AuReasonEOF, AuReasonWatermark,
                 AuReasonHardware, or AuReasonAny.

       flow      Specifies the ID of the flow to affect.

       element_num
                 Specifies the index of the element to affect.

       new_state Specifies the new state for the flow.  This must  be  one  of  thses  constants:
                 AuStateStop, AuStateStart, or AuStatePause.

Description

       AuMakeChangeStateAction  sets the action field of action to AuElementActionChangeState and
       initializes the other fields with the remaining arguments.

       AuMakeChangeStateAction is implemented as a macro.

See Also

       AuMakeSendNotifyAction, AuMakeNoopAction.

       audiolib - Network Audio System C Language Interface