4e42229bdd
git-subtree-dir: external/gainput git-subtree-split: 2be0a50089eafcc6fccb66142180082e48f27f4c
127 lines
2.3 KiB
C++
127 lines
2.3 KiB
C++
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#ifndef GAINPUTHELPERSEVDEV_H_
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#define GAINPUTHELPERSEVDEV_H_
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#include <fcntl.h>
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#include <unistd.h>
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#include <errno.h>
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#include <linux/uinput.h>
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#include <gainput/GainputLog.h>
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namespace gainput
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{
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namespace
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{
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static const unsigned EvdevDeviceCount = 10;
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static const char* EvdevDeviceIds[EvdevDeviceCount] =
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{
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"/dev/input/event0",
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"/dev/input/event1",
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"/dev/input/event2",
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"/dev/input/event3",
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"/dev/input/event4",
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"/dev/input/event5",
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"/dev/input/event6",
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"/dev/input/event7",
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"/dev/input/event8",
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"/dev/input/event9",
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};
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typedef long BitType;
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#define GAINPUT_BITCOUNT (sizeof(BitType)*8)
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#define GAINPUT_BITS(n) ((n/GAINPUT_BITCOUNT)+1)
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bool IsBitSet(const BitType* bits, unsigned bit)
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{
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return bool(bits[bit/GAINPUT_BITCOUNT] & (1ul << (bit % GAINPUT_BITCOUNT)));
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}
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bool HasEventType(const BitType* bits, unsigned type)
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{
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return IsBitSet(bits, type);
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}
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bool HasEventCode(const BitType* bits, unsigned code)
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{
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return IsBitSet(bits, code);
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}
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class EvdevDevice
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{
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public:
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EvdevDevice(int fd) :
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valid_(false)
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{
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int rc;
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memset(name_, 0, sizeof(name_));
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rc = ioctl(fd, EVIOCGNAME(sizeof(name_) - 1), name_);
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if (rc < 0)
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return;
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GAINPUT_LOG("EVDEV Device name: %s\n", name_);
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rc = ioctl(fd, EVIOCGBIT(0, sizeof(bits_)), bits_);
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if (rc < 0)
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return;
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rc = ioctl(fd, EVIOCGBIT(EV_KEY, sizeof(keyBits_)), keyBits_);
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if (rc < 0)
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return;
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valid_ = true;
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}
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bool IsValid() const
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{
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return valid_;
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}
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InputDevice::DeviceType GetDeviceType() const
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{
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if (HasEventType(bits_, EV_REL)
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&& HasEventType(bits_, EV_KEY)
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&& HasEventCode(keyBits_, BTN_LEFT))
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{
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GAINPUT_LOG("EVDEV Detected as mouse\n");
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return InputDevice::DT_MOUSE;
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}
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else if (HasEventType(bits_, EV_KEY)
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&& HasEventCode(keyBits_, KEY_A)
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&& HasEventCode(keyBits_, KEY_Q))
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{
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GAINPUT_LOG("EVDEV Detected as keyboard\n");
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return InputDevice::DT_KEYBOARD;
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}
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else if (HasEventType(bits_, EV_ABS)
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&& HasEventType(bits_, EV_KEY)
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&& (HasEventCode(keyBits_, BTN_GAMEPAD)
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|| HasEventCode(keyBits_, BTN_JOYSTICK))
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)
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{
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GAINPUT_LOG("EVDEV Detected as pad\n");
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return InputDevice::DT_PAD;
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}
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GAINPUT_LOG("EVDEV Unknown device type\n");
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return InputDevice::DT_COUNT;
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}
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private:
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bool valid_;
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char name_[255];
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BitType bits_[GAINPUT_BITS(EV_CNT)];
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BitType keyBits_[GAINPUT_BITS(KEY_CNT)];
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};
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}
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}
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#endif
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