IAMLine21Decoder::GetDecoderLevel
| Microsoft DirectShow 9.0 |
IAMLine21Decoder::GetDecoderLevel
The GetDecoderLevel method retrieves the closed-captioned decoder level.
Syntax
HRESULT GetDecoderLevel( AM_LINE21_CCLEVEL *lpLevel );
Parameters
lpLevel
Pointer to a variable that receives a member of the AM_LINE21_CCLEVEL enumeration. The returned value is always AM_L21_CCLEVEL_TC2 (TeleCaption II).
Return Values
Returns an HRESULT value. Possible values include the following.
| Value | Description |
| E_INVALIDARG | Invalid argument |
| S_OK | Success |
Remarks
TeleCaption I and TeleCaption II are standards for closed caption decoders. The Line 21 Decoder filter supports TeleCaption II, which is backward compatible with TeleCaption I.
Requirements
Header: Include il21dec.h.
Library: Use Strmiids.lib.
See Also