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This header is used by multiple technologies. For more information, see:
audioenginebaseapo.h contains the following programming interfaces:
Interfaces
| IApoAcousticEchoCancellation This interface is implemented by APOs to enable acoustic echo cancellation (AEC) scenarios. |
| IApoAcousticEchoCancellation2 Extends IAcousticEchoCancellation to allow APOs to specify desired properties of the reference stream. |
| IApoAuxiliaryInputConfiguration Provides methods that APOs can implement so that the audio engine can add and remove auxiliary input streams. |
| IApoAuxiliaryInputRT The realtime-safe interface used to drive the auxiliary inputs of an APO. |
| IAudioDeviceModulesClient Audio Processing Objects (APOs) implement this interface to obtain a reference to an IAudioDeviceModulesManager instance. |
| IAudioProcessingObject System Effects Audio Processing Objects (sAPOs) are typically used in or called from real-time process threads. |
| IAudioProcessingObjectConfiguration The IAudioProcessingObjectConfiguration interface is used to configure the APO. This interface uses its methods to lock and unlock the APO for processing. |
| IAudioProcessingObjectRT This interface can operate in real-time mode and its methods can be called form real-time processing threads. |
| IAudioSystemEffects The IAudioSystemEffects interface uses the basic methods that are inherited from IUnknown, and must implement an Initialize method. |
| IAudioSystemEffects2 The IAudioSystemEffects2 interface was introduced with Windows 8.1 for retrieving information about the processing objects in a given mode. |
| IAudioSystemEffectsCustomFormats The IAudioSystemEffectsCustomFormats interface is supported in Windows Vista and later versions of Windows. |
Structures
| APO_REG_PROPERTIES The APO_REG_PROPERTIES structure is used by IAudioProcessingObject::GetRegistrationProperties for returning the registration properties of an audio processing object (APO). |
| APOInitBaseStruct The APOInitBaseStruct structure is the base initialization header that must precede other initialization data in IAudioProcessingObject::Initialize. |
| APOInitSystemEffects The APOInitSystemEffects structure gets passed to the system effects APO for initialization. |
| APOInitSystemEffects2 The APOInitSystemEffects2 structure was introduced with Windows 8.1, to make it possible to provide additional initialization context to the audio processing object (APO) for initialization. |
Enumerations
| APO_FLAG The APO_FLAG enumeration defines constants that are used as flags by an audio processing object (APO). |
| APO_REFERENCE_STREAM_PROPERTIES Specifies loopback stream properties for the IApoAcousticEchoCancellation2::GetDesiredReferenceStreamProperties callback method. |