forked from WebKit/WebKit
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathHIDDevice.cpp
More file actions
108 lines (90 loc) · 4.15 KB
/
HIDDevice.cpp
File metadata and controls
108 lines (90 loc) · 4.15 KB
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
100
101
102
103
104
105
106
107
108
/*
* Copyright (C) 2020 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "HIDDevice.h"
#if PLATFORM(MAC)
#include "HIDElement.h"
#include "Logging.h"
#include <IOKit/hid/IOHIDElement.h>
#include <wtf/Deque.h>
#include <wtf/HashSet.h>
#include <wtf/cf/TypeCastsCF.h>
WTF_DECLARE_CF_TYPE_TRAIT(IOHIDElement);
namespace WebCore {
HIDDevice::HIDDevice(IOHIDDeviceRef device)
: m_rawDevice(device)
{
CFNumberRef cfVendorID = checked_cf_cast<CFNumberRef>(IOHIDDeviceGetProperty(device, CFSTR(kIOHIDVendorIDKey)));
CFNumberRef cfProductID = checked_cf_cast<CFNumberRef>(IOHIDDeviceGetProperty(device, CFSTR(kIOHIDProductIDKey)));
int vendorID, productID;
CFNumberGetValue(cfVendorID, kCFNumberIntType, &vendorID);
CFNumberGetValue(cfProductID, kCFNumberIntType, &productID);
if (vendorID < 0 || vendorID > std::numeric_limits<uint16_t>::max()) {
LOG(HID, "Device attached with malformed vendor ID 0x%x. Resetting to 0.", vendorID);
vendorID = 0;
}
if (productID < 0 || productID > std::numeric_limits<uint16_t>::max()) {
LOG(HID, "Device attached with malformed product ID 0x%x. Resetting to 0.", productID);
productID = 0;
}
m_vendorID = (uint16_t)vendorID;
m_productID = (uint16_t)productID;
CFStringRef cfProductName = checked_cf_cast<CFStringRef>(IOHIDDeviceGetProperty(device, CFSTR(kIOHIDProductKey)));
m_productName = cfProductName ? String(cfProductName) : String("Unknown"_s);
}
Vector<HIDElement> HIDDevice::uniqueInputElementsInDeviceTreeOrder() const
{
HashSet<IOHIDElementCookie> encounteredCookies;
Deque<IOHIDElementRef> elementQueue;
RetainPtr<CFArrayRef> elements = adoptCF(IOHIDDeviceCopyMatchingElements(m_rawDevice.get(), NULL, kIOHIDOptionsTypeNone));
for (CFIndex i = 0; i < CFArrayGetCount(elements.get()); ++i)
elementQueue.append(checked_cf_cast<IOHIDElementRef>(CFArrayGetValueAtIndex(elements.get(), i)));
Vector<HIDElement> result;
while (!elementQueue.isEmpty()) {
auto element = elementQueue.takeFirst();
IOHIDElementCookie cookie = IOHIDElementGetCookie(element);
if (encounteredCookies.contains(cookie))
continue;
switch (IOHIDElementGetType(element)) {
case kIOHIDElementTypeCollection: {
auto children = IOHIDElementGetChildren(element);
for (CFIndex i = CFArrayGetCount(children) - 1; i >= 0; --i)
elementQueue.prepend(checked_cf_cast<IOHIDElementRef>(CFArrayGetValueAtIndex(children, i)));
continue;
}
case kIOHIDElementTypeInput_Misc:
case kIOHIDElementTypeInput_Button:
case kIOHIDElementTypeInput_Axis:
encounteredCookies.add(cookie);
result.append(element);
continue;
default:
continue;
}
}
return result;
}
} // namespace WebCore
#endif // PLATFORM(MAC)