blob: 4d24b0093f404b37bdd2dec2f707ad43e689ac2f (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
|
// Copyright 2014 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.
#include "device/hid/hid_service.h"
#include "base/lazy_instance.h"
#include "base/logging.h"
#include "base/memory/scoped_vector.h"
#include "base/stl_util.h"
#include "base/threading/thread_restrictions.h"
#if defined(OS_LINUX) && defined(USE_UDEV)
#include "device/hid/hid_service_linux.h"
#elif defined(OS_MACOSX)
#include "device/hid/hid_service_mac.h"
#else
#include "device/hid/hid_service_win.h"
#endif
namespace device {
namespace {
// The instance will be reset when message loop destroys.
base::LazyInstance<scoped_ptr<HidService> >::Leaky g_hid_service_ptr =
LAZY_INSTANCE_INITIALIZER;
} // namespace
void HidService::GetDevices(std::vector<HidDeviceInfo>* devices) {
DCHECK(thread_checker_.CalledOnValidThread());
STLClearObject(devices);
for (DeviceMap::iterator it = devices_.begin();
it != devices_.end();
++it) {
devices->push_back(it->second);
}
}
// Fills in the device info struct of the given device_id.
bool HidService::GetDeviceInfo(const HidDeviceId& device_id,
HidDeviceInfo* info) const {
DeviceMap::const_iterator it = devices_.find(device_id);
if (it == devices_.end())
return false;
*info = it->second;
return true;
}
void HidService::WillDestroyCurrentMessageLoop() {
DCHECK(thread_checker_.CalledOnValidThread());
g_hid_service_ptr.Get().reset(NULL);
}
HidService::HidService() {
base::ThreadRestrictions::AssertIOAllowed();
DCHECK(thread_checker_.CalledOnValidThread());
base::MessageLoop::current()->AddDestructionObserver(this);
}
HidService::~HidService() {
DCHECK(thread_checker_.CalledOnValidThread());
base::MessageLoop::current()->RemoveDestructionObserver(this);
}
HidService* HidService::CreateInstance() {
#if defined(OS_LINUX) && defined(USE_UDEV)
return new HidServiceLinux();
#elif defined(OS_MACOSX)
return new HidServiceMac();
#elif defined(OS_WIN)
return new HidServiceWin();
#else
return NULL;
#endif
}
void HidService::AddDevice(const HidDeviceInfo& info) {
DCHECK(thread_checker_.CalledOnValidThread());
if (!ContainsKey(devices_, info.device_id)) {
devices_[info.device_id] = info;
}
}
void HidService::RemoveDevice(const HidDeviceId& device_id) {
DCHECK(thread_checker_.CalledOnValidThread());
DeviceMap::iterator it = devices_.find(device_id);
if (it != devices_.end())
devices_.erase(it);
}
HidService* HidService::GetInstance() {
if (!g_hid_service_ptr.Get().get())
g_hid_service_ptr.Get().reset(CreateInstance());
return g_hid_service_ptr.Get().get();
}
} // namespace device
|
