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This method retrieves the DMA channel by index.
HRESULT GetDMAChannel(DWORDdwIndex,IDMAChannel** ppChannel);
Parameters
- dwIndex
[in] Index of the channel to be retrieved. This must be between 0 and the total number of channels retrieved by IBitstreamProcessor::GetDMAChannelCount. - ppChannel
[out] Returns the IDMAChannel interface pointer.
Return Values
The following table shows a list of possible return values.
| Return value | Description |
|---|---|
| S_OK | The request completed successfully. |
| E_INVALIDARG | A range check failed for the index. |
| E_UNEXPECTED | IBitstreamProcessor::SetBitstreamType did not succeed yet. |
| E_POINTER | An invalid argument pointer has been encountered. |
| E_FAIL | A generic failure to get IDMAChannel occurred. |
Remarks
IBitstreamProcessor::SetBitstreamType should succeed before calling this method.
The current version of DVD navigator requires DMA channel 0 to accept a full DVD stream.
Requirements
OS Versions: Windows CE .NET 4.0 and later.
Header: Dvddrvr.idl.
See Also
IDMAChannel:IUnknown | IBitstreamProcessor::SetBitstreamType | IBitstreamProcessor::GetDMAChannelCount | IBitstreamProcessor:IUnknown
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