IATSC_VCT Interface
This topic applies to Update Rollup 2 for Microsoft Windows XP Media Center Edition 2005 and later.
The IATSC_VCT interface enables the client to get data from a virtual channel table (VCT). The IAtscPsipParser::GetVCT method returns a pointer to this interface.
A record as defined by this interface corresponds to a virtual channel in the VCT. For example, the GetCountOfRecords method returns the number of virtual channels defined in the VCT.
The VCT may contain one or more table-wide descriptors. In addition, each record in the VCT may have one or more descriptors. To get the table-wide descriptors, use the GetTableDescriptorByIndex method or the GetTableDescriptorByTag method. To get the record descriptors, use the GetRecordDescriptorByIndex method or the GetRecordDescriptorByTag method.
Methods
The IATSC_VCT interface inherits the methods of the IUnknown interface.
In addition, IATSC_VCT defines the following methods.
| Method | Description |
|---|---|
Returns the number of records in the VCT. |
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Returns the number of table-wide descriptors in the VCT. |
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Returns the protocol version of the table. |
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Returns the carrier frequency for a channel in this VCT. |
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Returns the number of descriptors for a record in the VCT. |
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Returns a descriptor for a specified record in the VCT. |
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Searches a record in the VCT for a descriptor with a specified descriptor tag. |
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Returns the extended text message (ETM) location for a record in the EIT. |
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Queries whether the access_controlled bit is set for a particular record in the VCT. |
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Queries whether the hidden bit is set for a particular record in the VCT. |
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Queries whether the hide_guide bit is set for a particular record in the VCT. |
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Queries whether the out_of_band bit is set for a particular record in the VCT. |
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Queries whether the path_select bit is set for a particular record in the VCT. |
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Returns the major channel number for a record in the VCT. |
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Returns the minor channel number for a record in the VCT. |
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Returns the modulation mode for a record in the VCT. |
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Returns the name of a specified channel in the VCT. |
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Returns the program number for a record in the VCT. |
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Returns the service type for a record in the VCT. |
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Returns the source identifier for a record in the VCT. |
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Returns the transport stream identifier (TSID) for a specified channel. |
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Returns a table-wide descriptor for the VCT. |
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Searches the VCT for a table-wide descriptor with the specified descriptor tag. |
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Returns the TSID for the entire VCT. |
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Returns the version number for the VCT. |
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Initializes the object. |
Requirements
| Header | Declared in Atscpsipparser.h. |
See Also
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Build date: 12/4/2008