通过

ITuneRequestInfo::GetNextLocator

  • 项目
 
Microsoft DirectShow 9.0

ITuneRequestInfo::GetNextLocator

The GetNextLocator method creates a new tune request with locator information for the next transport stream on the network.

Syntax

  HRESULT GetNextLocator(
  ITuneRequest*  pCurrentRequest,
  ITuneRequest**  ppTuneRequest
);

Parameters

pCurrentRequest

[in]  Specifies the ITuneRequest interface of the current tune request. NULL means to return information for the first stream.

ppTuneRequest

[out]  Pointer to a variable that receives a tune request for the next transport stream.

Return Values

The method returns an HRESULT. Possible values include those in the following table.

Return code Description
S_OK The method succeeded.
E_POINTER CurrentRequest is not valid, or TuneRequest is NULL.

Remarks

This method is used internally by the Network Provider's IScanningTuner::SeekUp and IScanningTuner::SeekDown methods, and is also useful for any Guide Store Loader that scans a network for EPG information.

Currently this method is not implemented for DVB-C or DVB-S networks, and the method returns E_NOTIMPL. The method is implemented for DVB-T.

Requirements

Header: Include bdatif.h.

See Also