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102 lines
2.8 KiB
C++
102 lines
2.8 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim:set ts=2 sw=2 sts=2 et cindent: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "BluetoothClassOfDevice.h"
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#include "mozilla/dom/BluetoothClassOfDeviceBinding.h"
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#include "nsThreadUtils.h"
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USING_BLUETOOTH_NAMESPACE
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NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(BluetoothClassOfDevice, mOwnerWindow)
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NS_IMPL_CYCLE_COLLECTING_ADDREF(BluetoothClassOfDevice)
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NS_IMPL_CYCLE_COLLECTING_RELEASE(BluetoothClassOfDevice)
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(BluetoothClassOfDevice)
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NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
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NS_INTERFACE_MAP_ENTRY(nsISupports)
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NS_INTERFACE_MAP_END
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/*
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* Class of Device(CoD): 32-bit unsigned integer
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*
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* 31 24 23 13 12 8 7 2 1 0
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* | | Major | Major | Minor | |
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* | | service | device | device | |
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* | | class | class | class | |
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* | |<- 11 ->|<- 5 ->|<- 6 ->| |
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*
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* https://www.bluetooth.org/en-us/specification/assigned-numbers/baseband
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*/
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// Bit 23 ~ Bit 13: Major service class
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#define GET_MAJOR_SERVICE_CLASS(cod) (((cod) & 0xffe000) >> 13)
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// Bit 12 ~ Bit 8: Major device class
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#define GET_MAJOR_DEVICE_CLASS(cod) (((cod) & 0x1f00) >> 8)
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// Bit 7 ~ Bit 2: Minor device class
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#define GET_MINOR_DEVICE_CLASS(cod) (((cod) & 0xfc) >> 2)
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BluetoothClassOfDevice::BluetoothClassOfDevice(nsPIDOMWindow* aOwner)
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: mOwnerWindow(aOwner)
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{
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MOZ_ASSERT(aOwner);
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Reset();
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}
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BluetoothClassOfDevice::~BluetoothClassOfDevice()
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{}
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void
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BluetoothClassOfDevice::Reset()
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{
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mMajorServiceClass = 0x1; // LIMITED_DISCOVERABILITY
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mMajorDeviceClass = 0x1F; // UNCATEGORIZED
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mMinorDeviceClass = 0;
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}
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bool
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BluetoothClassOfDevice::Equals(const uint32_t aValue)
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{
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return (mMajorServiceClass == GET_MAJOR_SERVICE_CLASS(aValue) &&
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mMajorDeviceClass == GET_MAJOR_DEVICE_CLASS(aValue) &&
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mMinorDeviceClass == GET_MINOR_DEVICE_CLASS(aValue));
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}
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uint32_t
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BluetoothClassOfDevice::ToUint32()
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{
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return (mMajorServiceClass & 0x7ff) << 13 |
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(mMajorDeviceClass & 0x1f) << 8 |
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(mMinorDeviceClass & 0x3f) << 2;
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}
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void
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BluetoothClassOfDevice::Update(const uint32_t aValue)
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{
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mMajorServiceClass = GET_MAJOR_SERVICE_CLASS(aValue);
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mMajorDeviceClass = GET_MAJOR_DEVICE_CLASS(aValue);
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mMinorDeviceClass = GET_MINOR_DEVICE_CLASS(aValue);
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}
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// static
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already_AddRefed<BluetoothClassOfDevice>
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BluetoothClassOfDevice::Create(nsPIDOMWindow* aOwner)
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{
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MOZ_ASSERT(NS_IsMainThread());
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MOZ_ASSERT(aOwner);
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nsRefPtr<BluetoothClassOfDevice> cod = new BluetoothClassOfDevice(aOwner);
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return cod.forget();
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}
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JSObject*
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BluetoothClassOfDevice::WrapObject(JSContext* aCx)
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{
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return BluetoothClassOfDeviceBinding::Wrap(aCx, this);
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}
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