MFCreateSourceReaderFromByteStream function (mfreadwrite.h)

Creates the source reader from a byte stream.


HRESULT MFCreateSourceReaderFromByteStream(
  [in]  IMFByteStream   *pByteStream,
  [in]  IMFAttributes   *pAttributes,
  [out] IMFSourceReader **ppSourceReader


[in] pByteStream

A pointer to the IMFByteStream interface of a byte stream. This byte stream will provide the source data for the source reader.

[in] pAttributes

Pointer to the IMFAttributes interface. You can use this parameter to configure the source reader. For more information, see Source Reader Attributes. This parameter can be NULL.

[out] ppSourceReader

Receives a pointer to the IMFSourceReader interface. The caller must release the interface.

Return value

If this function succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.


Call CoInitialize(Ex) and MFStartup before calling this function.

Internally, the source reader calls the IMFSourceResolver::CreateObjectFromByteStream method to create a media source from the byte stream. Therefore, a byte-stream handler must be registered for the byte stream. For more information about byte-stream handlers, see Scheme Handlers and Byte-Stream Handlers.

This function is available on Windows Vista if Platform Update Supplement for Windows Vista is installed.


Requirement Value
Minimum supported client Windows 7, Windows Vista and Platform Update Supplement for Windows Vista [desktop apps | UWP apps]
Minimum supported server Windows Server 2008 R2 [desktop apps | UWP apps]
Target Platform Windows
Header mfreadwrite.h
Library Mfreadwrite.lib
DLL Mfreadwrite.dll

See also

Media Foundation Functions

Source Reader