IMFContentProtectionDevice::InvokeFunction method

Calls into the implementation of the protection system in the security processor.

Syntax

virtual HRESULT InvokeFunction(
  [in]                                         DWORD FunctionId,
  [in]                                         DWORD InputBufferByteCount,
  [in, size_is(InputBufferByteCount)]    const BYTE  *InputBuffer,
  [in, out]                                    DWORD *OutputBufferByteCount,
  [out, size_is(*OutputBufferByteCount)]       BYTE  *OutputBuffer
) = 0;

Parameters

FunctionId [in]

The identifier of the function that you want to run. This identifier is defined by the implementation of the protection system.

InputBufferByteCount [in]

The number of bytes of in the buffer that InputBuffer specifies, including private data.

InputBuffer [in]

A pointer to the data that you want to provide as input.

OutputBufferByteCount [in, out]

Pointer to a value that specifies the length in bytes of the data that the function wrote to the buffer that OutputBuffer specifies, including the private data.

OutputBuffer [out]

Pointer to the buffer where you want the function to write its output.

Return value

If this method succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.

Requirements

See also

IMFContentProtectionDevice