Provided by: libaudio-dev_1.9.4-6_amd64
AuMakeChangeStateAction - initialize an action
#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;
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.
AuMakeChangeStateAction sets the action field of action to AuElementActionChangeState and initializes the other fields with the remaining arguments. AuMakeChangeStateAction is implemented as a macro.
AuMakeSendNotifyAction, AuMakeNoopAction. audiolib - Network Audio System C Language Interface