mirror of
https://github.com/moonlight-stream/moonlight-embedded.git
synced 2026-04-07 16:36:10 +00:00
Use SDL-style mapping for input
This commit is contained in:
Iwan Timmer
@@ -49,6 +49,9 @@ struct input_abs_parms {
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struct input_device {
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struct libevdev *dev;
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struct mapping map;
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int key_map[KEY_MAX];
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int abs_map[ABS_MAX];
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int hats_state[3][2];
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int fd;
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char modifiers;
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__s32 mouseDeltaX, mouseDeltaY, mouseScroll;
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@@ -59,9 +62,16 @@ struct input_device {
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short rightStickX, rightStickY;
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bool gamepadModified;
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struct input_abs_parms xParms, yParms, rxParms, ryParms, zParms, rzParms;
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struct input_abs_parms dpadxParms, dpadyParms;
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};
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#define HAT_UP 1
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#define HAT_RIGHT 2
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#define HAT_DOWN 4
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#define HAT_LEFT 8
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static const int hat_constants[3][3] = {{HAT_UP | HAT_LEFT, HAT_UP, HAT_UP | HAT_RIGHT}, {HAT_LEFT, 0, HAT_RIGHT}, {HAT_LEFT | HAT_DOWN, HAT_DOWN, HAT_RIGHT}};
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#define set_hat(flags, flag, hat, hat_flag) flags = (-((hat & hat_flag) > 0) ^ flags) & flag
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static struct input_device* devices = NULL;
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static int numDevices = 0;
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static int assignedControllerIds = 0;
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@@ -78,9 +88,9 @@ static bool grabbingDevices;
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static bool (*handler) (struct input_event*, struct input_device*);
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static void evdev_init_parms(struct input_device *dev, struct input_abs_parms *parms, int code) {
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parms->flat = libevdev_get_abs_flat(dev->dev, code);
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parms->min = libevdev_get_abs_minimum(dev->dev, code);
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parms->max = libevdev_get_abs_maximum(dev->dev, code);
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parms->flat = libevdev_get_abs_flat(dev->dev, dev->abs_map[code]);
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parms->min = libevdev_get_abs_minimum(dev->dev, dev->abs_map[code]);
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parms->max = libevdev_get_abs_maximum(dev->dev, dev->abs_map[code]);
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parms->avg = (parms->min+parms->max)/2;
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parms->range = parms->max - parms->avg;
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parms->diff = parms->max - parms->min;
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@@ -120,15 +130,6 @@ static char evdev_convert_value_byte(struct input_event *ev, struct input_device
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return (ev->value - parms->flat - parms->min) * UCHAR_MAX / (parms->diff - parms->flat);
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}
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static int evdev_convert_value_direction(struct input_event *ev, struct input_device *dev, struct input_abs_parms *parms, bool reverse) {
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if (ev->value > (parms->avg+parms->range/4))
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return reverse?-1:1;
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else if (ev->value < (parms->avg-parms->range/4))
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return reverse?1:-1;
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else
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return 0;
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}
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static bool evdev_handle_event(struct input_event *ev, struct input_device *dev) {
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bool gamepadModified = false;
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@@ -195,6 +196,8 @@ static bool evdev_handle_event(struct input_event *ev, struct input_device *dev)
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} else {
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int mouseCode = 0;
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short gamepadCode = 0;
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int index = dev->key_map[ev->code - BTN_MISC];
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switch (ev->code) {
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case BTN_LEFT:
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mouseCode = BUTTON_LEFT;
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@@ -206,35 +209,35 @@ static bool evdev_handle_event(struct input_event *ev, struct input_device *dev)
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mouseCode = BUTTON_RIGHT;
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break;
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default:
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if (ev->code == dev->map.btn_south)
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if (index == dev->map.btn_a)
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gamepadCode = A_FLAG;
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else if (ev->code == dev->map.btn_west)
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else if (index == dev->map.btn_x)
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gamepadCode = X_FLAG;
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else if (ev->code == dev->map.btn_north)
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else if (index == dev->map.btn_y)
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gamepadCode = Y_FLAG;
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else if (ev->code == dev->map.btn_east)
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else if (index == dev->map.btn_b)
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gamepadCode = B_FLAG;
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else if (ev->code == dev->map.btn_dpad_up)
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else if (index == dev->map.btn_dpup)
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gamepadCode = UP_FLAG;
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else if (ev->code == dev->map.btn_dpad_down)
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else if (index == dev->map.btn_dpdown)
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gamepadCode = DOWN_FLAG;
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else if (ev->code == dev->map.btn_dpad_right)
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else if (index == dev->map.btn_dpright)
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gamepadCode = RIGHT_FLAG;
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else if (ev->code == dev->map.btn_dpad_left)
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else if (index == dev->map.btn_dpleft)
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gamepadCode = LEFT_FLAG;
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else if (ev->code == dev->map.btn_thumbl)
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else if (index == dev->map.btn_leftstick)
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gamepadCode = LS_CLK_FLAG;
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else if (ev->code == dev->map.btn_thumbr)
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else if (index == dev->map.btn_rightstick)
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gamepadCode = RS_CLK_FLAG;
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else if (ev->code == dev->map.btn_tl)
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else if (index == dev->map.btn_leftshoulder)
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gamepadCode = LB_FLAG;
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else if (ev->code == dev->map.btn_tr)
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else if (index == dev->map.btn_rightshoulder)
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gamepadCode = RB_FLAG;
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else if (ev->code == dev->map.btn_start)
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else if (index == dev->map.btn_start)
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gamepadCode = PLAY_FLAG;
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else if (ev->code == dev->map.btn_select)
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else if (index == dev->map.btn_back)
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gamepadCode = BACK_FLAG;
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else if (ev->code == dev->map.btn_mode)
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else if (index == dev->map.btn_guide)
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gamepadCode = SPECIAL_FLAG;
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}
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@@ -248,9 +251,9 @@ static bool evdev_handle_event(struct input_event *ev, struct input_device *dev)
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dev->buttonFlags |= gamepadCode;
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else
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dev->buttonFlags &= ~gamepadCode;
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} else if (ev->code == dev->map.btn_tl2)
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} else if (index == dev->map.btn_lefttrigger)
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dev->leftTrigger = ev->value?UCHAR_MAX:0;
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else if (ev->code == dev->map.btn_tr2)
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else if (index == dev->map.btn_righttrigger)
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dev->rightTrigger = ev->value?UCHAR_MAX:0;
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else {
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fprintf(stderr, "Unmapped button: %d\n", ev->code);
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@@ -274,46 +277,46 @@ static bool evdev_handle_event(struct input_event *ev, struct input_device *dev)
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break;
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case EV_ABS:
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gamepadModified = true;
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if (ev->code == dev->map.abs_x)
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dev->leftStickX = evdev_convert_value(ev, dev, &dev->xParms, dev->map.reverse_x);
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else if (ev->code == dev->map.abs_y)
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dev->leftStickY = evdev_convert_value(ev, dev, &dev->yParms, dev->map.reverse_y);
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else if (ev->code == dev->map.abs_rx)
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dev->rightStickX = evdev_convert_value(ev, dev, &dev->rxParms, dev->map.reverse_rx);
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else if (ev->code == dev->map.abs_ry)
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dev->rightStickY = evdev_convert_value(ev, dev, &dev->ryParms, dev->map.reverse_ry);
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else if (ev->code == dev->map.abs_z)
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dev->leftTrigger = evdev_convert_value_byte(ev, dev, &dev->zParms);
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else if (ev->code == dev->map.abs_rz)
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dev->rightTrigger = evdev_convert_value_byte(ev, dev, &dev->rzParms);
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else if (ev->code == dev->map.abs_dpad_x) {
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int dir = evdev_convert_value_direction(ev, dev, &dev->dpadxParms, dev->map.reverse_dpad_x);
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if (dir == 1) {
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dev->buttonFlags |= RIGHT_FLAG;
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dev->buttonFlags &= ~LEFT_FLAG;
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} else if (dir == 0) {
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dev->buttonFlags &= ~RIGHT_FLAG;
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dev->buttonFlags &= ~LEFT_FLAG;
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} else {
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dev->buttonFlags &= ~RIGHT_FLAG;
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dev->buttonFlags |= LEFT_FLAG;
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}
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} else if (ev->code == dev->map.abs_dpad_y) {
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int dir = evdev_convert_value_direction(ev, dev, &dev->dpadyParms, dev->map.reverse_dpad_y);
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if (dir == 1) {
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dev->buttonFlags |= DOWN_FLAG;
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dev->buttonFlags &= ~UP_FLAG;
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} else if (dir == 0) {
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dev->buttonFlags &= ~DOWN_FLAG;
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dev->buttonFlags &= ~UP_FLAG;
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} else {
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dev->buttonFlags &= ~DOWN_FLAG;
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dev->buttonFlags |= UP_FLAG;
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}
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} else
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gamepadModified = false;
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int index = dev->abs_map[ev->code];
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int hat_index = (ev->code - ABS_HAT0X) / 2;
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int har_dir_index = (ev->code - ABS_HAT0X) % 2;
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break;
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switch (ev->code) {
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case ABS_HAT0X:
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case ABS_HAT0Y:
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case ABS_HAT1X:
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case ABS_HAT1Y:
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case ABS_HAT2X:
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case ABS_HAT2Y:
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case ABS_HAT3X:
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case ABS_HAT3Y:
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dev->hats_state[hat_index][har_dir_index] = ev->value < 0 ? 0 : (ev->value == 0 ? 1 : 2);
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int hat_state = hat_constants[dev->hats_state[hat_index][0]][dev->hats_state[hat_index][1]];
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if (hat_index == dev->map.hat_dpup)
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set_hat(dev->buttonFlags, UP_FLAG, hat_state, dev->map.hat_dir_dpup);
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if (hat_index == dev->map.hat_dpdown)
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set_hat(dev->buttonFlags, DOWN_FLAG, hat_state, dev->map.hat_dir_dpdown);
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if (hat_index == dev->map.hat_dpright)
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set_hat(dev->buttonFlags, HAT_RIGHT, hat_state, dev->map.hat_dir_dpright);
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if (hat_index == dev->map.hat_dpleft)
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set_hat(dev->buttonFlags, HAT_LEFT, hat_state, dev->map.hat_dir_dpleft);
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break;
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}
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default:
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if (index == dev->map.abs_leftx)
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dev->leftStickX = evdev_convert_value(ev, dev, &dev->xParms, dev->map.reverse_leftx);
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else if (index == dev->map.abs_lefty)
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dev->leftStickY = evdev_convert_value(ev, dev, &dev->yParms, !dev->map.reverse_lefty);
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else if (index == dev->map.abs_rightx)
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dev->rightStickX = evdev_convert_value(ev, dev, &dev->rxParms, dev->map.reverse_rightx);
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else if (index == dev->map.abs_righty)
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dev->rightStickY = evdev_convert_value(ev, dev, &dev->ryParms, !dev->map.reverse_righty);
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else if (index == dev->map.abs_lefttrigger)
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dev->leftTrigger = evdev_convert_value_byte(ev, dev, &dev->zParms);
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else if (index == dev->map.abs_righttrigger)
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dev->rightTrigger = evdev_convert_value_byte(ev, dev, &dev->rzParms);
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else
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gamepadModified = false;
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}
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dev->gamepadModified |= gamepadModified;
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@@ -410,15 +413,32 @@ void evdev_create(const char* device, char* mapFile) {
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if (mapFile != NULL)
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mapping_load(mapFile, &(devices[dev].map));
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int nbuttons = 0;
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for (int i = BTN_JOYSTICK; i < KEY_MAX; ++i) {
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if (libevdev_has_event_code(devices[dev].dev, EV_KEY, i))
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devices[dev].key_map[i - BTN_MISC] = nbuttons++;
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}
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for (int i = BTN_MISC; i < BTN_JOYSTICK; ++i) {
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if (libevdev_has_event_code(devices[dev].dev, EV_KEY, i))
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devices[dev].key_map[i - BTN_MISC] = nbuttons++;
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}
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int naxes = 0;
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for (int i = 0; i < ABS_MAX; ++i) {
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/* Skip hats */
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if (i == ABS_HAT0X)
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i = ABS_HAT3Y;
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else if (libevdev_has_event_code(devices[dev].dev, EV_ABS, i))
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devices[dev].abs_map[i] = naxes++;
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}
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devices[dev].controllerId = -1;
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evdev_init_parms(&devices[dev], &(devices[dev].xParms), devices[dev].map.abs_x);
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evdev_init_parms(&devices[dev], &(devices[dev].yParms), devices[dev].map.abs_y);
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evdev_init_parms(&devices[dev], &(devices[dev].zParms), devices[dev].map.abs_z);
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evdev_init_parms(&devices[dev], &(devices[dev].rxParms), devices[dev].map.abs_rx);
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evdev_init_parms(&devices[dev], &(devices[dev].ryParms), devices[dev].map.abs_ry);
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evdev_init_parms(&devices[dev], &(devices[dev].rzParms), devices[dev].map.abs_rz);
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evdev_init_parms(&devices[dev], &(devices[dev].dpadxParms), devices[dev].map.abs_dpad_x);
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evdev_init_parms(&devices[dev], &(devices[dev].dpadyParms), devices[dev].map.abs_dpad_y);
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evdev_init_parms(&devices[dev], &(devices[dev].xParms), devices[dev].map.abs_leftx);
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evdev_init_parms(&devices[dev], &(devices[dev].yParms), devices[dev].map.abs_lefty);
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evdev_init_parms(&devices[dev], &(devices[dev].zParms), devices[dev].map.abs_lefttrigger);
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evdev_init_parms(&devices[dev], &(devices[dev].rxParms), devices[dev].map.abs_rightx);
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evdev_init_parms(&devices[dev], &(devices[dev].ryParms), devices[dev].map.abs_righty);
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evdev_init_parms(&devices[dev], &(devices[dev].rzParms), devices[dev].map.abs_righttrigger);
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if (grabbingDevices) {
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if (ioctl(fd, EVIOCGRAB, 1) < 0) {
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