IDVB_SIT Interface
| Microsoft DirectShow 9.0 |
IDVB_SIT Interface
This topic applies to Update Rollup 2 for Microsoft Windows XP Media Center Edition 2005 and later.
The IDVB_SIT interface enables the client to get information from a selection information table (SIT). The IDvbSiParser::GetSIT method returns a pointer to this interface.
The presence of a SIT in a transport stream indicates that the transport stream is partial, meaning the stream contains a subset of a complete broadcast stream. A partial transport stream does not carry any service information (SI) tables other than SITs and discontinuity information tables (DITs). The SIT contains a summary of the full SI information for the stream.
The SIT may contain one or more table-wide descriptors. In addition, each record in the SIT may have one or more descriptors. To get the table-wide descriptors, use the GetTableDescriptorByIndex or GetTableDescriptorByTag method. To get the record descriptors, use the GetRecordDescriptorByIndex or GetRecordDescriptorByTag method.
In addition to the methods inherited from IUnknown, the IDVB_SIT interface exposes the following methods.
| Method | Description |
| ConvertNextToCurrent | Converts a next table to a current table. |
| GetCountOfRecords | Returns the number of records in the SIT. |
| GetCountOfTableDescriptors | Returns the number of table-wide descriptors in the SIT. |
| GetNextTable | Retrieves the next table that follows the current table. |
| GetRecordCountOfDescriptors | Returns the number of descriptors for a record in the SIT. |
| GetRecordDescriptorByIndex | Retrieves a descriptor for a specified record in the SIT. |
| GetRecordDescriptorByTag | Searches a record in the SIT for a descriptor with a specified descriptor tag. |
| GetRecordRunningStatus | Returns the running status of a particular event in the SIT. |
| GetRecordServiceId | Returns the service identifier for a record in the SIT. |
| GetTableDescriptorByIndex | Retrieves a table-wide descriptor for the SIT. |
| GetTableDescriptorByTag | Searches the SIT for a table-wide descriptor with the specified descriptor tag. |
| GetVersionNumber | Returns the version number for the SIT. |
| Initialize | Initializes the object. |
| RegisterForNextTable | Registers the client to be notified when a next table arrives that will replace the current table. |
| RegisterForWhenCurrent | Registers the client to be notified when the table becomes current. |
Requirements
Header: Include dvbsiparser.h.
See Also