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Fix gamepad axis initial values

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By default, initialize axis to 0, which is represented by 0x8000 as a
16-bit unsigned value.

PR #5623 <https://github.com/Genymobile/scrcpy/pull/5623>
This commit is contained in:
Romain Vimont 2024-12-07 14:40:04 +01:00
parent 1786f28e6f
commit 86a68fac6c
1 changed files with 7 additions and 6 deletions
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13
app/src/hid/hid_gamepad.c
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@ -191,16 +191,19 @@ static const uint8_t SC_HID_GAMEPAD_REPORT_DESC[] = {
* (8 is top-left, 1 is top, 2 is top-right, etc.)
*/
// [-32768 to 32767] -> [0 to 65535]
#define AXIS_RESCALE(V) (uint16_t) (((int32_t) V) + 0x8000)
static void
sc_hid_gamepad_slot_init(struct sc_hid_gamepad_slot *slot,
uint32_t gamepad_id) {
assert(gamepad_id != SC_GAMEPAD_ID_INVALID);
slot->gamepad_id = gamepad_id;
slot->buttons = 0;
slot->axis_left_x = 0;
slot->axis_left_y = 0;
slot->axis_right_x = 0;
slot->axis_right_y = 0;
slot->axis_left_x = AXIS_RESCALE(0);
slot->axis_left_y = AXIS_RESCALE(0);
slot->axis_right_x = AXIS_RESCALE(0);
slot->axis_right_y = AXIS_RESCALE(0);
slot->axis_left_trigger = 0;
slot->axis_right_trigger = 0;
}
@ -423,8 +426,6 @@ sc_hid_gamepad_generate_input_from_axis(struct sc_hid_gamepad *hid,
struct sc_hid_gamepad_slot *slot = &hid->slots[slot_idx];
// [-32768 to 32767] -> [0 to 65535]
#define AXIS_RESCALE(V) (uint16_t) (((int32_t) V) + 0x8000)
switch (event->axis) {
case SC_GAMEPAD_AXIS_LEFTX:
slot->axis_left_x = AXIS_RESCALE(event->value);