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BTReal: Attempt to configure HCI_SERVICE_TYPE_GUARANTEED on all connections for improved performance with certain adapters.

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This commit is contained in:
Jordan Woyak
2025-06-12 02:10:59 -05:00
parent 350ec54779
commit 0e25979449
1 changed files with 31 additions and 0 deletions
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31
Source/Core/Core/IOS/USB/Bluetooth/BTReal.cpp
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@ -251,6 +251,37 @@ auto BluetoothRealDevice::ProcessHCIEvent(BufferType buffer) -> BufferType
SendHCIStoreLinkKeyCommand();
}
}
else if (event == HCI_EVENT_CON_COMPL)
{
// Some devices (e.g. Sena UD100 0a12:0001) default to HCI_SERVICE_TYPE_BEST_EFFORT.
// This can cause less than 200hz input and drop-outs in some games (e.g. Brawl).
// We configure HCI_SERVICE_TYPE_GUARANTEED for each new connection.
// This solves dropped input issues at least for the mentioned Sena adapter.
INFO_LOG_FMT(IOS_WIIMOTE, "Sending HCI_CMD_QOS_SETUP");
HCICommandPayload<HCI_CMD_QOS_SETUP, hci_qos_setup_cp> payload;
// Copy the connection handle.
std::memcpy(&payload.command.con_handle, buffer.data() + 3, sizeof(payload.command.con_handle));
payload.command.service_type = HCI_SERVICE_TYPE_GUARANTEED;
payload.command.token_rate = 0xffffffff;
payload.command.peak_bandwidth = 0xffffffff;
payload.command.latency = 10000;
payload.command.delay_variation = 0xffffffff;
m_lib_usb_bt_adapter->SendControlTransfer(AsU8Span(payload));
}
else if (event == HCI_EVENT_QOS_SETUP_COMPL)
{
const auto service_type = buffer[6];
if (service_type != HCI_SERVICE_TYPE_GUARANTEED)
WARN_LOG_FMT(IOS_WIIMOTE, "Got HCI_EVENT_QOS_SETUP_COMPL service_type: {}", service_type);
else
INFO_LOG_FMT(IOS_WIIMOTE, "Got HCI_EVENT_QOS_SETUP_COMPL HCI_SERVICE_TYPE_GUARANTEED");
}
return buffer;
}