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Prevent multiple HID elements of same usage type on OSX

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On OSX, iterate the HID device's elements and only store the last of
each type to accommodate for flaky hardware
This commit is contained in:
Arthur Carlsson 2017-06-30 23:56:42 +02:00 committed by Léo Lam
parent 2b4bf8662a
commit 79a646a67d
1 changed files with 17 additions and 0 deletions
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17
Source/Core/InputCommon/ControllerInterface/OSX/OSXJoystick.mm
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@ -2,6 +2,7 @@
// Licensed under GPLv2+
// Refer to the license.txt file included.
#include <algorithm>
#include <sstream>
#include <Foundation/Foundation.h>
@ -49,11 +50,26 @@ Joystick::Joystick(IOHIDDeviceRef device, std::string name)
if (axes)
{
std::vector<IOHIDElementRef> elems;
for (int i = 0; i < CFArrayGetCount(axes); i++)
{
IOHIDElementRef e = (IOHIDElementRef)CFArrayGetValueAtIndex(axes, i);
// DeviceElementDebugPrint(e, nullptr);
uint32_t usage = IOHIDElementGetUsage(e);
// Check for any existing elements with the same usage
auto it = std::find_if(elems.begin(), elems.end(), [usage](const auto& ref) {
return usage == IOHIDElementGetUsage(ref);
});
if (it == elems.end())
elems.push_back(e);
else
*it = e;
}
for (auto e : elems)
{
if (IOHIDElementGetUsage(e) == kHIDUsage_GD_Hatswitch)
{
AddInput(new Hat(e, m_device, Hat::up));
@ -67,6 +83,7 @@ Joystick::Joystick(IOHIDDeviceRef device, std::string name)
new Axis(e, m_device, Axis::positive));
}
}
CFRelease(axes);
}