aumonitornotifyevent(3) [debian man page]
AuMonitorNotifyEvent(3) Library Functions Manual AuMonitorNotifyEvent(3) Name AuMonitorNotifyEvent - monitor notify event structure Structures #include <audio/audiolib.h> typedef union _AuEvent { . . . AuMonitorNotifyEvent aumonitornotify; . . . }AuEvent; typedef struct _AuMonitorNotifyEvent { int type; AuUint32 serial; AuBool send_event; AuServer *server; AuTime time; AuFlowID flow; unsigned char element_num; unsigned char format; unsigned char num_tracks; unsigned short count; unsigned short num_fields; AuUint32 data; AuUint32 data1; AuUint32 data2; }AuMonitorNotifyEvent; Members type The event type. MonitorNotify events are type AuEventTypeMonitorNotify. serial The serial ID of the event expanded from the 16 bit value sent by the server. send_event AuTrue if the event came from a SendEvent protocol request. server The connection to the audio server that the event was read from. time The server time in milliseconds when the event was generated. flow Specifies the ID of the flow that caused the event. element_num The index of the ExportMonitor element that gnerated this event. format The format of the monitor data. Currently, the following formats are defined: AuFormatULAW8, AuFormatLinearUnsigned8, AuFormat- LinearSigned8, AuFormatLinearSigned16MSB, AuFormatLinearUnsigned16MSB, AuFormatSignedLinear16LSB, and AuFormatLinearUn- signed16LSB. Taken from the ExportMonitor element. num_tracks The number of tracks in the monitor data. Taken from the ExportMonitor element. count Always 0. num_fields Always 2. data Monitor data. data1 Monitor data. data2 Monitor data. Description MonitorNotify events will be sent to clients with flows containing ExportMonitor elements. See Also AuAnyEvent, AuElementNotifyEvent, AuErrorEvent, AuGrabNotifyEvent. audiolib - Network Audio System C Language Interface audiolib - events 1.9.3 AuMonitorNotifyEvent(3)
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AuElementNotifyEvent(3) Library Functions Manual AuElementNotifyEvent(3) Name AuElementNotifyEvent - element notify event structure Structures #include <audio/audiolib.h> typedef union _AuEvent { . . . AuElementNotifyEvent auelementnotify; . . . }AuEvent; typedef struct _AuElementNotifyEvent { int type; AuUint32 serial; AuBool send_event; AuServer *server; AuTime time; AuFlowID flow; unsigned char element_num; unsigned char kind; unsigned char prev_state; unsigned char cur_state; unsigned char reason; AuUint32 num_bytes; }AuElementNotifyEvent; Members type The event type. ElementNotify events are type AuEventTypeElementNotify. serial The serial ID of the event expanded from the 16 bit value sent by the server. send_event AuTrue if the event came from a SendEvent protocol request. server The connection to the audio server that the event was read from. time The server time in milliseconds when the event was generated. flow The ID of the flow that caused the event. element_num The index of the element that caused the event or AuElementAll to indicate the flow. kind The kind of notify event. This will be one of these constants: AuElementNotifyKindLowWater, AuElementNotifyKindHighWater, or AuElementNotifyKindState. prev_state The previous state of the element indexed by element_num. This will be one of these constants: AuStateStop, AuStateStart, or AuStatePause. cur_state The current state of the element indexed by element_num. This will be one of these constants: AuStateStop, AuStateStart, or AuS- tatePause. reason The reason for the notify event. This will be one of these constants: AuReasonUser, AuReasonUnderrun, AuReasonOverrun, AuReaso- nEOF, AuReasonWatermark, or AuReasonHardware. num_bytes The number of bytes to send or receive. Only valid if the the element indexed by element_num is an ImportClient or ExportClient. Description ElementNotify events are sent to client applications to notify them of a watermark condition or state change. If kind is AuElementNoti- fyKindLowWater, the ImportClient element indexed by element_num in flow is ready to receive num_bytes of audio data from the client appli- cation. If kind is AuElementNotifyKindHighWater, the ExportClient element indexed by element_num in flow is ready to send num_bytes of audio data to the client application. If kind is AuElementNotifyKindState, the element indexed by element_num (or flow if element_num is AuElementAll) has made a state transition from prev_state to cur_state triggering the event. Reguardless of kind, prev_state and cur_state contain the old and new states and reason contains the reason for the event. See Also AuAnyEvent, AuErrorEvent, AuGrabNotifyEvent, AuMakeSendNotifyAction, AuMonitorNotifyEvent. audiolib - Network Audio System C Language Interface audiolib - events 1.9.3 AuElementNotifyEvent(3)