DMOGetTypes (Compact 2013)

3/26/2014

This function retrieves the media types registered for a DMO.

Syntax

HRESULT DMOGetTypes(
  REFCLSID clsidDMO,
  unsigned long ulInputTypesRequested,
  unsigned long* pulInputTypesSupplied,
  DMO_PARTIAL_MEDIATYPE* pInputTypes,
  unsigned long ulOutputTypesRequested,
  unsigned long* pulOutputTypesSupplied,
  DMO_PARTIAL_MEDIATYPE* pOutputTypes
);

Parameters

• clsidDMO
  Class identifier (CLSID) of the DMO.

• ulInputTypesRequested
  Size of the array passed in the pInputTypes parameter.

• pulInputTypesSupplied
  Pointer to a variable that receives the number of DMO_PARTIAL_MEDIATYPE structures in pInputTypes that the function fills.

• pInputTypes
  Pointer to a caller-allocated array of DMO_PARTIAL_MEDIATYPE structures. The size of the array is given in the ulInputTypesRequested parameter. The function fills the array with the input types registered for the DMO.

• ulOutputTypesRequested
  Size of the array passed in the pOutputTypes parameter.

• pulOutputTypesSupplied
  Pointer to a variable that receives the number of DMO_PARTIAL_MEDIATYPE structures in pOutputTypes that the function fills.

• pOutputTypes
  Pointer to a caller-allocated array of DMO_PARTIAL_MEDIATYPE structures. The size of the array is given in the ulOutputTypesRequested parameter. The function fills the array with the DMO output types registered for the DMO.

Return Value

Returns an HRESULT value. Possible values include the following.

Remarks

If one of the arrays is too small to hold all of the registered types, the function fills the array but returns S_FALSE.

If the DMO did not register any media types, the function returns S_OK and sets *pulInputTypesSupplied and *pulOutputTypesSupplied to zero.

Requirements

See Also

Reference

DMO Functions
DMO_PARTIAL_MEDIATYPE