PRETRIEVEUUID128 callback function (bthsdpddi.h)

The Bluetooth SdpRetrieveUuid128 function is used to copy an unaligned 128-bit universally unique identifier (UUID) from an SDP stream.

Syntax

PRETRIEVEUUID128 Pretrieveuuid128;

void Pretrieveuuid128(
  PUCHAR Stream,
  GUID *uuid128
)
{...}

Parameters

Stream

A pointer to an unaligned 128-bit UUID.

uuid128

A pointer to an aligned variable to receive the 128-bit UUID.

Return value

None

Remarks

The SdpRetrieveUuid128 function does not search for the UUID to copy. The Stream parameter must specify the exact address of the UUID to be extracted.

Some processor architectures require that values be aligned in memory and will generate an error if an attempt is made to access a misaligned value. SDP records are constructed without regard to processor alignment rules. When SDP records are stored in memory, they might contain elements that are misaligned according to local processor's alignment rules.

The SdpRetrieveUuid128 function safely copies UUIDs onto computers that have alignment requirements and efficiently copies UUIDs onto computers that do not have requirements. In addition, this function works on UUIDs that are aligned correctly.

This function has no effect on byte order.

Bluetooth profile drivers can obtain a pointer to this function through the BTHDDI_SDP_PARSE_INTERFACE structure.

Requirements

See also

BTHDDI_SDP_PARSE_INTERFACE