IMpeg2PsiParser::GetPmtVersionNumber method
[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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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.]
The implementation of this method is provided as sample code with the DirectShow SDK. It is not a supported DirectShow API.
The GetPmtVersionNumber method retrieves the version_number field from a specified PMT. The version number is incremented whenever the definition of the program changes.
Syntax
HRESULT GetPmtVersionNumber(
[in] WORD wProgramNumber,
[out] BYTE *pPmtVersion
);
Parameters
-
wProgramNumber [in]
-
Specifies the program_number field of the program, as given in the PAT.
-
pPmtVersion [out]
-
Pointer to a variable that receives the version_number field.
Return value
The method returns an HRESULT value. Possible values include, but are not limited to, the values shown in the following table.
| Return code | Description |
|---|---|
|
Success. |
Remarks
Use the GetRecordProgramNumber method to obtain the program number.
See also