APOInitSystemEffects3 structure (audioengineextensionapo.h)
Provides audio processing object (APO) initialization parameters, extending APOInitSystemEffects2 to add the ability to specify a service provider for logging.
Syntax
typedef struct APOInitSystemEffects3 {
APOInitBaseStruct APOInit;
IPropertyStore *pAPOEndpointProperties;
IServiceProvider *pServiceProvider;
IMMDeviceCollection *pDeviceCollection;
UINT nSoftwareIoDeviceInCollection;
UINT nSoftwareIoConnectorIndex;
GUID AudioProcessingMode;
BOOL InitializeForDiscoveryOnly;
} APOInitSystemEffects3;
Members
APOInit
An APOInitBaseStruct structure.
pAPOEndpointProperties
A pointer to an IPropertyStore object.
pServiceProvider
An IServiceProvider interface.
pDeviceCollection
A pointer to an IMMDeviceCollection object. The last item in the pDeviceCollection is always the IMMDevice representing the audio endpoint.
nSoftwareIoDeviceInCollection
Specifies the MMDevice that implements the DeviceTopology that includes the software connector for which the APO is initializing. The MMDevice is contained in pDeviceCollection.
nSoftwareIoConnectorIndex
Specifies the index of a Software_IO connector in the DeviceTopology.
AudioProcessingMode
Specifies the processing mode for the audio graph.
InitializeForDiscoveryOnly
Indicates whether the audio system is initializing the APO for effects discovery only.
Remarks
For more information on the Windows 11 APIs for the Audio Processing Objects (APOs) that can ship with audio drivers, see Windows 11 APIs for Audio Processing Objects.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows Build 22000 |
| Minimum supported server | Windows Build 22000 |
| Header | audioengineextensionapo.h |