IltmmMediaInfo::get_StreamSubtype

#include "ltmm.h"

C Syntax

HRESULT IltmmMediaInfo_get_StreamSubtype (pMediaInfo, pVal)

C++ Syntax

HRESULT get_StreamTypeName(pVal)

IltmmMediaInfo *pMediaInfo;

pointer to an interface

BSTR *pVal;

pointer to a string

Retrieves the name of the stream subtype, of the current stream in the source media file.

Parameter

Description

pMediaInfo

Pointer to an IltmmMediaInfo Interface.

pVal

Pointer to a string to be updated with the GUID of the subtype of the current stream.

Returns

S_OK

The function was successful.

<> S_OK

An error occurred. Refer to the Error Codes or the HRESULT error codes in the DirectShow documentation.

Comments

Call SysFreeString to free the memory allocated for the string when it is no longer needed.

To get the number of the current stream, call IltmmMediaInfo::get_CurrentStream.

To set the current stream, call IltmmMediaInfo::put_CurrentStream. Once the current stream has been set, information about that stream can be obtained by calling any of the following functions:

IltmmMediaInfo::get_StreamDuration

IltmmMediaInfo::get_StreamMediaType

IltmmMediaInfo::get_StreamType

IltmmMediaInfo::get_StreamSubtypeName

IltmmMediaInfo::get_StreamSubtype

IltmmMediaInfo::get_StreamTypeName

Required DLLs and Libraries

LTMM

For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application.

Platforms

Win32, x64

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