AuMakeChangeStateAction(3)AuMakeChangeStateAction(3)Name
AuMakeChangeStateAction - initialize an action
Synopsis
#include <audio/audiolib.h>
AuMakeChangeStateAction(action, trigger_state, trig_
ger_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: AuS
tateStop, AuStateStart, AuStatePause, or AuS
tateAny.
trigger_prev_state
Specifies the previous state for the trigger.
This must be one of these constants: AuS
tateStop, AuStateStart, AuStatePause, or AuS
tateAny.
trigger_reason
Specifies the reason for the action. This must
be one of these constants: AuReasonUser, AuRea
sonUnderrun, AuReasonOverrun, AuReasonEOF,
AuReasonWatermark, AuReasonHardware, or AuReaso
nAny.
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, AuStat
eStart, 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.
audiolib - action initializatio1.2 1
AuMakeChangeStateAction(3)AuMakeChangeStateAction(3)See Also
AuMakeSendNotifyAction, AuMakeNoopAction.
audiolib - Network Audio System C Language Interface
audiolib - action initializatio1.2 2
