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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// TODO(youngki): Implement this file.
#include "device/bluetooth/bluetooth_adapter_win.h"
#include <BluetoothAPIs.h>
#if defined(_WIN32_WINNT_WIN8)
// The Windows 8 SDK defines FACILITY_VISUALCPP in winerror.h.
#undef FACILITY_VISUALCPP
#endif
#include <delayimp.h>
#include <string>
#include "base/bind.h"
#include "base/logging.h"
#include "base/message_loop.h"
#include "base/stringprintf.h"
#include "base/sys_string_conversions.h"
#include "base/threading/thread_restrictions.h"
#pragma comment(lib, "Bthprops.lib")
#pragma comment(lib, "delayimp.lib")
namespace {
const BLUETOOTH_FIND_RADIO_PARAMS bluetooth_adapter_param =
{ sizeof(BLUETOOTH_FIND_RADIO_PARAMS) };
// A frame-based exception handler filter function for a handler for exceptions
// generated by the Visual C++ delay loader helper function.
int FilterVisualCPPExceptions(DWORD exception_code) {
return HRESULT_FACILITY(exception_code) == FACILITY_VISUALCPP ?
EXCEPTION_EXECUTE_HANDLER : EXCEPTION_CONTINUE_SEARCH;
}
// Returns true if the machine has a bluetooth stack available. The first call
// to this function will involve file IO, so it should be done on an
// appropriate thread. This function is not threadsafe.
bool HasBluetoothStack() {
static enum {
HBS_UNKNOWN,
HBS_YES,
HBS_NO,
} has_bluetooth_stack = HBS_UNKNOWN;
if (has_bluetooth_stack == HBS_UNKNOWN) {
base::ThreadRestrictions::AssertIOAllowed();
HRESULT hr = E_FAIL;
__try {
hr = __HrLoadAllImportsForDll("bthprops.cpl");
} __except(FilterVisualCPPExceptions(::GetExceptionCode())) {
hr = E_FAIL;
}
has_bluetooth_stack = SUCCEEDED(hr) ? HBS_YES : HBS_NO;
}
return has_bluetooth_stack == HBS_YES;
}
} // namespace
namespace device {
const int BluetoothAdapterWin::kPollIntervalMs = 500;
BluetoothAdapterWin::BluetoothAdapterWin()
: BluetoothAdapter(),
powered_(false),
ALLOW_THIS_IN_INITIALIZER_LIST(weak_ptr_factory_(this)) {
}
BluetoothAdapterWin::~BluetoothAdapterWin() {
}
void BluetoothAdapterWin::AddObserver(BluetoothAdapter::Observer* observer) {
NOTIMPLEMENTED();
}
void BluetoothAdapterWin::RemoveObserver(BluetoothAdapter::Observer* observer) {
NOTIMPLEMENTED();
}
bool BluetoothAdapterWin::IsPresent() const {
return !address_.empty();
}
bool BluetoothAdapterWin::IsPowered() const {
return powered_;
}
void BluetoothAdapterWin::SetPowered(
bool powered,
const base::Closure& callback,
const ErrorCallback& error_callback) {
NOTIMPLEMENTED();
}
bool BluetoothAdapterWin::IsDiscovering() const {
NOTIMPLEMENTED();
return false;
}
void BluetoothAdapterWin::SetDiscovering(
bool discovering,
const base::Closure& callback,
const ErrorCallback& error_callback) {
NOTIMPLEMENTED();
}
BluetoothAdapter::ConstDeviceList BluetoothAdapterWin::GetDevices() const {
NOTIMPLEMENTED();
return BluetoothAdapter::ConstDeviceList();
}
BluetoothDevice* BluetoothAdapterWin::GetDevice(const std::string& address) {
NOTIMPLEMENTED();
return NULL;
}
const BluetoothDevice* BluetoothAdapterWin::GetDevice(
const std::string& address) const {
NOTIMPLEMENTED();
return NULL;
}
void BluetoothAdapterWin::ReadLocalOutOfBandPairingData(
const BluetoothOutOfBandPairingDataCallback& callback,
const ErrorCallback& error_callback) {
NOTIMPLEMENTED();
}
void BluetoothAdapterWin::UpdateAdapterState() {
// TODO(youngki): Move this check to the earliest point reasonable so that no
// attempts are made to do any bluetooth processing if no BT stack is present.
if (!HasBluetoothStack())
return;
HBLUETOOTH_RADIO_FIND bluetooth_adapter_handle = NULL;
BLUETOOTH_RADIO_INFO bluetooth_adapter_info =
{ sizeof(BLUETOOTH_RADIO_INFO), 0 };
HBLUETOOTH_RADIO_FIND bluetooth_handle = BluetoothFindFirstRadio(
&bluetooth_adapter_param, &bluetooth_adapter_handle);
if (bluetooth_adapter_handle) {
if (ERROR_SUCCESS == BluetoothGetRadioInfo(bluetooth_adapter_handle,
&bluetooth_adapter_info)) {
name_ = base::SysWideToUTF8(bluetooth_adapter_info.szName);
address_ = base::StringPrintf("%02X:%02X:%02X:%02X:%02X:%02X",
bluetooth_adapter_info.address.rgBytes[5],
bluetooth_adapter_info.address.rgBytes[4],
bluetooth_adapter_info.address.rgBytes[3],
bluetooth_adapter_info.address.rgBytes[2],
bluetooth_adapter_info.address.rgBytes[1],
bluetooth_adapter_info.address.rgBytes[0]);
powered_ = BluetoothIsConnectable(bluetooth_adapter_handle) ||
BluetoothIsDiscoverable(bluetooth_adapter_handle);
} else {
name_.clear();
address_.clear();
powered_ = false;
}
}
if (bluetooth_handle)
BluetoothFindRadioClose(bluetooth_handle);
}
void BluetoothAdapterWin::TrackDefaultAdapter() {
PollAdapterState();
}
void BluetoothAdapterWin::PollAdapterState() {
UpdateAdapterState();
MessageLoop::current()->PostDelayedTask(
FROM_HERE,
base::Bind(&BluetoothAdapterWin::PollAdapterState,
weak_ptr_factory_.GetWeakPtr()),
base::TimeDelta::FromMilliseconds(kPollIntervalMs));
}
} // namespace device
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