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IWMDMDevice::GetFormatSupport

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The GetFormatSupport method retrieves all the formats supported by the device, including codecs, file formats, and DRM schemes.

Syntax

HRESULT GetFormatSupport(
  _WAVEFORMATEX**  ppFormatEx,
  UINT*  pnFormatCount,
  LPWSTR**  pppwszMimeType,
  UINT*  pnMimeTypeCount
);

Parameters

ppFormatEx

[out]  Pointer to an array of _WAVEFORMATEX structures containing information about codecs and bit rates supported by the device.

pnFormatCount

[out]  Pointer to the number of elements in the ppFormatEx array.

pppwszMimeType

[out]  Pointer to an array describing file formats and digital rights management schemes supported by the device.

pnMimeTypeCount

[out]  Pointer to the number of elements in the pppwszMimeType array.

Return Values

The method returns an HRESULT. All the interface methods in Windows Media Device Manager and service provider can return any of the following classes of error codes:

  • Standard COM error codes
  • Windows error codes converted to HRESULT values
  • Windows Media Device Manager error codes

For a complete list of possible error codes, see Error Codes.

Possible values include, but are not limited to, those in the following table.

Return code Description
S_OK The method succeeded.
E_OUTOFMEMORY Insufficient memory resources to allocate memory for ppFormatEx or pppwszMimeType.
E_INVALIDARG A parameter is invalid or a NULL pointer.
E_FAIL An unspecified error occurred.

Remarks

Memory is allocated for the ppFormatex and ppwszMimeType parameters ** by this method and must be freed by the caller using CoTaskMemFree, a standard Win32 function.

Requirements

Header: Defined in wmdm.idl.

Library: mssachlp.lib

See Also