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ControllerInterface: Make the ID assigning code common

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This makes the device ID assigning code common to all backends, by
moving it to AddDevice() instead of copy-pasting or replicating
the logic in the backends.

Also, to prepare for hotplugging, instead of relying on a name usage
count, the new ID assigning system always starts from ID 0 and tries
to assign the first ID that is not used.
This commit is contained in:
Léo Lam
2016-07-14 10:25:52 +02:00
parent 89a03174cc
commit 788e19f54d
25 changed files with 41 additions and 112 deletions
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11
Source/Core/InputCommon/ControllerInterface/evdev/evdev.cpp
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@ -36,12 +36,6 @@ static std::string GetName(const std::string& devnode)
void Init()
{
// this is used to number the joysticks
// multiple joysticks with the same name shall get unique ids starting at 0
std::map<std::string, int> name_counts;
int num_controllers = 0;
// We use Udev to find any devices. In the future this will allow for hotplugging.
// But for now it is essentially iterating over /dev/input/event0 to event31. However if the
// naming scheme is ever updated in the future, this *should* be forwards compatable.
@ -70,12 +64,11 @@ void Init()
// Unfortunately udev gives us no way to filter out the non event device interfaces.
// So we open it and see if it works with evdev ioctls or not.
std::string name = GetName(devnode);
auto input = std::make_shared<evdevDevice>(devnode, name_counts[name]++);
auto input = std::make_shared<evdevDevice>(devnode);
if (input->IsInteresting())
{
g_controller_interface.AddDevice(std::move(input));
num_controllers++;
}
}
udev_device_unref(dev);
@ -84,7 +77,7 @@ void Init()
udev_unref(udev);
}
evdevDevice::evdevDevice(const std::string& devnode, int id) : m_devfile(devnode), m_id(id)
evdevDevice::evdevDevice(const std::string& devnode) : m_devfile(devnode)
{
// The device file will be read on one of the main threads, so we open in non-blocking mode.
m_fd = open(devnode.c_str(), O_RDWR | O_NONBLOCK);