MFCreateSourceReaderFromByteStream function (mfreadwrite.h)

Article
02/22/2024

Creates the source reader from a byte stream.

Syntax

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

Parameters

[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.

Remarks

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.

Requirements

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