gecko-dev/dom/bluetooth2/BluetoothClassOfDevice.cpp

106 lines
3.0 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 et cindent: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "BluetoothClassOfDevice.h"
#include "mozilla/dom/BluetoothClassOfDeviceBinding.h"
#include "nsThreadUtils.h"
USING_BLUETOOTH_NAMESPACE
NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(BluetoothClassOfDevice, mOwnerWindow)
NS_IMPL_CYCLE_COLLECTING_ADDREF(BluetoothClassOfDevice)
NS_IMPL_CYCLE_COLLECTING_RELEASE(BluetoothClassOfDevice)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(BluetoothClassOfDevice)
NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_END
/*
* Class of Device(CoD): 32-bit unsigned integer
*
* 31 24 23 13 12 8 7 2 1 0
* | | Major | Major | Minor | |
* | | service | device | device | |
* | | class | class | class | |
* | |<- 11 ->|<- 5 ->|<- 6 ->| |
*
* https://www.bluetooth.org/en-us/specification/assigned-numbers/baseband
*/
// Bit 23 ~ Bit 13: Major service class
#define GET_MAJOR_SERVICE_CLASS(cod) (((cod) & 0xffe000) >> 13)
// Bit 12 ~ Bit 8: Major device class
#define GET_MAJOR_DEVICE_CLASS(cod) (((cod) & 0x1f00) >> 8)
// Bit 7 ~ Bit 2: Minor device class
#define GET_MINOR_DEVICE_CLASS(cod) (((cod) & 0xfc) >> 2)
BluetoothClassOfDevice::BluetoothClassOfDevice(nsPIDOMWindow* aOwner)
: mOwnerWindow(aOwner)
{
MOZ_ASSERT(aOwner);
SetIsDOMBinding();
Reset();
}
BluetoothClassOfDevice::~BluetoothClassOfDevice()
{}
void
BluetoothClassOfDevice::Reset()
{
mMajorServiceClass = 0x1; // LIMITED_DISCOVERABILITY
mMajorDeviceClass = 0x1F; // UNCATEGORIZED
mMinorDeviceClass = 0;
}
bool
BluetoothClassOfDevice::Equals(const uint32_t aValue)
{
return (mMajorServiceClass == GET_MAJOR_SERVICE_CLASS(aValue) &&
mMajorDeviceClass == GET_MAJOR_DEVICE_CLASS(aValue) &&
mMinorDeviceClass == GET_MINOR_DEVICE_CLASS(aValue));
}
uint32_t
BluetoothClassOfDevice::ToUint32()
{
return (mMajorServiceClass & 0x7ff) << 13 |
(mMajorDeviceClass & 0x1f) << 8 |
(mMinorDeviceClass & 0x3f) << 2;
}
void
BluetoothClassOfDevice::Update(const uint32_t aValue)
{
mMajorServiceClass = GET_MAJOR_SERVICE_CLASS(aValue);
mMajorDeviceClass = GET_MAJOR_DEVICE_CLASS(aValue);
mMinorDeviceClass = GET_MINOR_DEVICE_CLASS(aValue);
BT_API2_LOGR("aValue %x => majorService %x majorDevice %x minorDevice %x",
aValue, mMajorServiceClass, mMajorDeviceClass, mMinorDeviceClass);
}
// static
already_AddRefed<BluetoothClassOfDevice>
BluetoothClassOfDevice::Create(nsPIDOMWindow* aOwner)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aOwner);
nsRefPtr<BluetoothClassOfDevice> cod = new BluetoothClassOfDevice(aOwner);
return cod.forget();
}
JSObject*
BluetoothClassOfDevice::WrapObject(JSContext* aCx)
{
return BluetoothClassOfDeviceBinding::Wrap(aCx, this);
}