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IBitstreamProcessor::GetLabeledDMAChannel (Windows Embedded CE 6.0)

  • Статья

1/6/2010

This method retrieves the DMA channel by its name within a specified labeling schema.

Syntax

HRESULT GetLabeledDMAChannel(
  REFGUID guidLabelSystem,
  WCHAR* plabelBuf,
  IDMAChannel** ppDMAChannel
);

Parameters

  • guidLabelSystem
    [out] Labeling system.
  • plabelBuf
    [in] Zero-terminated label of the requested DMA channel.
  • ppDMAChannel
    [out] Returning IDMAChannel interface pointer.

Return Value

The following table shows a list of possible return values.

Return value Description

S_OK

The request completed successfully.

E_INVALIDARG

The requested channel is not known.

E_UNEXPECTED

IBitstreamProcessor::SetBitstreamType has not succeeded yet.

E_POINTER

An invalid argument pointer has been encountered. This is NULL for the returned value.

E_FAIL

A generic failure to get IDMAChannel occurred.

Remarks

The DVD navigator reserves this function. The purpose of this function is to enable selection of a DMA channel in case of multiple channels. Because DVD uses the single channel, there is no need to differentiate. Therefore, this function is not used.

Requirements

Header dvddrvr.idl
Windows Embedded CE Windows CE .NET 4.0 and later

See Also

Reference

IBitstreamProcessor
IBitstreamProcessor::SetBitstreamType
IDMAChannel