![]() ![]() However, the HFP device only allows a single file object on the GUID_DEVINTERFACE_BLUETOOTH_HFP_SCO_HCIBYPASS device interface. Note The audio driver developer can choose whether or not to implement a single filter for both capture and render paths, or separate filters. So the audio driver should expose a kernel streaming (KS) topology for the Hands-Free device as shown in the following diagram, to support both render and capture. TopologyĪll Bluetooth Hands-Free devices support both capture and render. This is typically 8KHz mono audio streaming. The audio driver should support the formats that are possible through the sideband hardware. ![]() The Windows logo requirements for format support include an exception for Bluetooth. And although there is no requirement to implement a hardware audio engine for the synchronous connection oriented (SCO) bypass output, there is no harm in doing so. ![]() The audio driver should fully support the WaveRT port driver, including “pull mode.” For more information, see Introducing the WaveRT Port Driver. These are kernel streaming considerations that are more related to Bluetooth bypass audio streaming. The Kernel Streaming considerations topic clarifies the requirements and other special considerations beyond those for all audio drivers. ![]()
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