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| Microsoft DirectShow 9.0 |
ICaptionServiceDescriptor::GetCaptionServiceNumber
This topic applies to Update Rollup 2 for Microsoft Windows XP Media Center Edition 2005 and later.
The GetCaptionServiceNumber method returns the service number within the closed captioning stream for a specified caption service.
Syntax
HRESULT GetCaptionServiceNumber(
BYTE bIndex,
BYTE *pbVal
);
Parameters
bIndex
[in] Zero-based index of the caption service. To get the number of caption services, call ICaptionServiceDescriptor::GetNumberOfServices.
pbVal
[out] Receives the caption_service_number field.
Return Values
The method returns an HRESULT. Possible values include, but are not limited to, those in the following table.
| Return code | Description |
| S_OK | The method succeeded. |
| MPEG2_E_INCORRECT_DESCRIPTOR_TAG | The table descriptor tag is incorrect. |
| MPEG2_E_MALFORMED_TABLE | The PSIP table is not well formed. |
| MPEG2_E_OUT_OF_BOUNDS | The bIndex parameter is out of range. |
Requirements
Header: Include atscpsipparser.h.
See Also