Audio Streaming Interfaces
[The feature associated with this page, DirectShow, is a legacy feature. It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation. Those features have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer, IMFMediaEngine and Audio/Video Capture in Media Foundation instead of DirectShow, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]
Note
These APIs are deprecated. Applications should use the Sample Grabber filter or implement a custom filter to get data from a DirectShow filter graph.
| Interface | Description |
|---|---|
| IAudioMediaStream | Controls audio media streams. This interface inherits from the IMediaStream interface and is used to create one or more IAudioStreamSample objects. It is also used to set and retrieve the current format of the stream data. |
| IAudioStreamSample | Retrieves information from the underlying IAudioData data objects. |
| IMemoryData | Contains methods that set and retrieve memory data on audio data objects. Audio data objects provide the underlying data that stream samples access. This interface provides a way to initialize memory buffers and to set actual amounts of audio data in the objects. Additionally, the IMemoryData::GetInfo method can be used to retrieve audio memory data. |
| IAudioData | Provides methods that enable applications to set and get the underlying audio data that audio streams will reference. The audio data format is set in the WAVEFORMATEX structure. |
Related topics