ACX_PEAKMETER_CALLBACKS structure (acxelements.h)
The ACX_PEAKMETER_CALLBACKS structure identifies the driver callbacks for ACX peakmeter operations.
Syntax
typedef struct _ACX_PEAKMETER_CALLBACKS {
ULONG Size;
PFN_ACX_PEAKMETER_RETRIEVE_LEVEL EvtAcxPeakMeterRetrieveLevel;
PFN_ACX_OBJECT_PROCESS_REQUEST EvtAcxPeakMeterProcessRequest;
} ACX_PEAKMETER_CALLBACKS, *PACX_PEAKMETER_CALLBACKS;
Members
Size
The length, in bytes, of this structure.
EvtAcxPeakMeterRetrieveLevel
The ACX_PEAKMETER_RETRIEVE_LEVEL callback.
EvtAcxPeakMeterProcessRequest
The EVT_ACX_OBJECT_PROCESS_REQUEST callback.
Remarks
Example
Example usage is shown below.
ACX_PEAKMETER_CALLBACKS peakmeterCallbacks;
ACX_PEAKMETER_CONFIG peakmeterCfg;
ACXPEAKMETER peakmeterElement;
...
ACX_PEAKMETER_CALLBACKS peakmeterCallbacks;
ACX_PEAKMETER_CALLBACKS_INIT(&peakmeterCallbacks);
peakmeterCallbacks.EvtAcxPeakMeterRetrieveLevel = CodecR_EvtPeakMeterRetrieveLevelCallback;
ACX_PEAKMETER_CONFIG peakmeterCfg;
ACX_PEAKMETER_CONFIG_INIT(&peakmeterCfg);
peakmeterCfg.ChannelsCount = MAX_CHANNELS;
peakmeterCfg.Minimum = PEAKMETER_MINIMUM;
peakmeterCfg.Maximum = PEAKMETER_MAXIMUM;
peakmeterCfg.SteppingDelta = PEAKMETER_STEPPING_DELTA;
peakmeterCfg.Callbacks = &peakmeterCallbacks;
ACX requirements
Minimum ACX version: 1.0
For more information about ACX versions, see ACX version overview.
Requirements
| Requirement | Value |
|---|---|
| Header | acxelements.h |