IWMReaderAdvanced::GetReceiveStreamSamples method (wmsdkidl.h)
[The feature associated with this page, Windows Media Format 11 SDK, is a legacy feature. It has been superseded by Source Reader and Sink Writer. Source Reader and Sink Writer have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use Source Reader and Sink Writer instead of Windows Media Format 11 SDK, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]
The GetReceiveStreamSamples method ascertains whether stream samples are delivered to the IWMReaderCallbackAdvanced::OnStreamSample call.
Syntax
HRESULT GetReceiveStreamSamples(
[in] WORD wStreamNum,
[out] BOOL *pfReceiveStreamSamples
);
Parameters
[in] wStreamNum
WORD containing the stream number. Stream numbers are in the range of 1 through 63.
[out] pfReceiveStreamSamples
Pointer to a Boolean value that is set to True if stream samples are delivered to OnStreamSample.
Return value
The method returns an HRESULT. Possible values include, but are not limited to, those in the following table.
| Return code | Description |
|---|---|
|
The method succeeded. |
|
The pfReceiveStreamSamples parameter is NULL, or the stream number is not valid. |
|
The method failed for an unspecified reason. |
Remarks
Stream samples are samples received directly from the source file, and are not decompressed. If you receive compressed samples, you must either keep them compressed, or decompress them with your application. The Windows Media Format SDK does not provide methods to decompress samples once they have been removed from a file.
Requirements
| Minimum supported client | Windows 2000 Professional [desktop apps only],Windows Media Format 7 SDK, or later versions of the SDK |
| Minimum supported server | Windows 2000 Server [desktop apps only] |
| Target Platform | Windows |
| Header | wmsdkidl.h (include Wmsdk.h) |
| Library | Wmvcore.lib; WMStubDRM.lib (if you use DRM) |