auelementstate(3) [debian man page]

AuElementState(3)					     Library Functions Manual						 AuElementState(3)

Name
       AuElementState - element state structure

Structures
       #include <audio/audiolib.h>

       typedef struct _AuElementState
       {
	   AuFlowID flow;
	   unsigned char element_num;
	   unsigned char state;
	   unsigned short pad;
       }AuElementState;

Members
       flow	 Specifies the flow.

       element_num
		 Specifies the index of the element of interest.  Use AuElementAll to access the state of the flow.

       state	 Specifies  the state of the element (or flow) specified by element_num.  This should be one of thses constants: AuStateStop, AuS-
		 tateStart, or AuStatePause.

Description
       The AuElementState structure is used to access the state of elements in a flow.	Only flows and component elements  (ExportBucket,  Export-
       Client, ExportDevice, ImportClient, ImportDevice, ImportBucket, and ImportWaveForm) have state.

See Also
       AuGetElementStates, AuMakeElementState, AuGetElementStates.

       audiolib - Network Audio System C Language Interface

audiolib - element state structure				       1.9.3							 AuElementState(3)

AuMakeChangeStateAction(3)				     Library Functions Manual					AuMakeChangeStateAction(3)

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

audiolib - action initialization				       1.9.3						AuMakeChangeStateAction(3)