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Code Releases Wiki Activity

Add joystick vibration support on Linux (#5043)

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This commit is contained in:
Wilhem Barbier
2016-06-15 07:25:35 +02:00
committed by Rémi Verschelde
parent 333de40180
commit f665200df7
7 changed files with 189 additions and 2 deletions
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74
platform/x11/joystick_linux.cpp
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@@ -316,13 +316,21 @@ void joystick_linux::setup_joystick_properties(int p_id) {
}
}
}
}
joy->force_feedback = false;
joy->ff_effect_timestamp = 0;
unsigned long ffbit[NBITS(FF_CNT)];
if (ioctl(joy->fd, EVIOCGBIT(EV_FF, sizeof(ffbit)), ffbit) != -1) {
if (test_bit(FF_RUMBLE, ffbit)) {
joy->force_feedback = true;
}
}
}
void joystick_linux::open_joystick(const char *p_path) {
int joy_num = get_free_joy_slot();
int fd = open(p_path, O_RDONLY | O_NONBLOCK);
int fd = open(p_path, O_RDWR | O_NONBLOCK);
if (fd != -1 && joy_num != -1) {
unsigned long evbit[NBITS(EV_MAX)] = { 0 };
@@ -392,6 +400,55 @@ void joystick_linux::open_joystick(const char *p_path) {
}
}
void joystick_linux::joystick_vibration_start(int p_id, float p_weak_magnitude, float p_strong_magnitude, float p_duration, uint64_t p_timestamp)
{
Joystick& joy = joysticks[p_id];
if (!joy.force_feedback || joy.fd == -1 || p_weak_magnitude < 0.f || p_weak_magnitude > 1.f || p_strong_magnitude < 0.f || p_strong_magnitude > 1.f) {
return;
}
if (joy.ff_effect_id != -1) {
joystick_vibration_stop(p_id, p_timestamp);
}
struct ff_effect effect;
effect.type = FF_RUMBLE;
effect.id = -1;
effect.u.rumble.weak_magnitude = floor(p_weak_magnitude * (float)0xffff);
effect.u.rumble.strong_magnitude = floor(p_strong_magnitude * (float)0xffff);
effect.replay.length = floor(p_duration * 1000);
effect.replay.delay = 0;
if (ioctl(joy.fd, EVIOCSFF, &effect) < 0) {
return;
}
struct input_event play;
play.type = EV_FF;
play.code = effect.id;
play.value = 1;
write(joy.fd, (const void*)&play, sizeof(play));
joy.ff_effect_id = effect.id;
joy.ff_effect_timestamp = p_timestamp;
}
void joystick_linux::joystick_vibration_stop(int p_id, uint64_t p_timestamp)
{
Joystick& joy = joysticks[p_id];
if (!joy.force_feedback || joy.fd == -1 || joy.ff_effect_id == -1) {
return;
}
struct input_event stop;
stop.type = EV_FF;
stop.code = joy.ff_effect_id;
stop.value = 0;
write(joy.fd, (const void*)&stop, sizeof(stop));
joy.ff_effect_id = -1;
joy.ff_effect_timestamp = p_timestamp;
}
InputDefault::JoyAxis joystick_linux::axis_correct(const input_absinfo *p_abs, int p_value) const {
int min = p_abs->minimum;
@@ -485,6 +542,19 @@ uint32_t joystick_linux::process_joysticks(uint32_t p_event_id) {
if (len == 0 || (len < 0 && errno != EAGAIN)) {
close_joystick(i);
};
if (joy->force_feedback) {
uint64_t timestamp = input->get_joy_vibration_timestamp(i);
if (timestamp > joy->ff_effect_timestamp) {
Vector2 strength = input->get_joy_vibration_strength(i);
float duration = input->get_joy_vibration_duration(i);
if (strength.x == 0 && strength.y == 0) {
joystick_vibration_stop(i, timestamp);
} else {
joystick_vibration_start(i, strength.x, strength.y, duration, timestamp);
}
}
}
}
joy_mutex->unlock();
return p_event_id;