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Introduce protocol-neutral controller state

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This commit is contained in:
Joey Yakimowich-Payne 2026-09-02 14:53:56 -06:00
commit b11ae076a8
28 changed files with 833 additions and 501 deletions
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54
xinput_feasibility_protocol.h
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@ -2,7 +2,8 @@
#include <stdint.h>
#include "switch_pro_driver.h"
#include "controller_state.h"
#include "switch_haptics.h"
namespace XInputFeasibility {
@ -39,42 +40,41 @@ struct InputReport {
static_assert(sizeof(InputReport) == 20);
constexpr int16_t horizontal_axis(uint16_t value) {
return static_cast<int16_t>(static_cast<int32_t>(value) - 32768);
constexpr int16_t invert_axis(int16_t value) {
return value == INT16_MIN ? INT16_MAX
: static_cast<int16_t>(-value);
}
constexpr int16_t vertical_axis(uint16_t value) {
const int16_t horizontal = horizontal_axis(value);
return horizontal == INT16_MIN ? INT16_MAX
: static_cast<int16_t>(-horizontal);
}
inline InputReport build_input_report(const SwitchInputState &state) {
inline InputReport build_input_report(const ControllerState& state) {
InputReport report{};
report.report_size = sizeof(report);
report.buttons =
(state.dpad_up ? kDpadUp : 0) | (state.dpad_down ? kDpadDown : 0) |
(state.dpad_up ? kDpadUp : 0) |
(state.dpad_down ? kDpadDown : 0) |
(state.dpad_left ? kDpadLeft : 0) |
(state.dpad_right ? kDpadRight : 0) | (state.button_plus ? kStart : 0) |
(state.button_minus ? kBack : 0) | (state.button_l3 ? kLeftThumb : 0) |
(state.button_r3 ? kRightThumb : 0) |
(state.button_l ? kLeftShoulder : 0) |
(state.button_r ? kRightShoulder : 0) |
(state.button_home ? kGuide : 0) |
// Switch labels are positional opposites of XInput labels.
(state.button_b ? kButtonA : 0) | (state.button_a ? kButtonB : 0) |
(state.button_y ? kButtonX : 0) | (state.button_x ? kButtonY : 0);
report.left_trigger = state.button_zl ? 0xff : 0x00;
report.right_trigger = state.button_zr ? 0xff : 0x00;
report.left_x = horizontal_axis(state.lx);
report.left_y = vertical_axis(state.ly);
report.right_x = horizontal_axis(state.rx);
report.right_y = vertical_axis(state.ry);
(state.dpad_right ? kDpadRight : 0) |
(state.button_start ? kStart : 0) |
(state.button_select ? kBack : 0) |
(state.button_left_stick ? kLeftThumb : 0) |
(state.button_right_stick ? kRightThumb : 0) |
(state.button_left_shoulder ? kLeftShoulder : 0) |
(state.button_right_shoulder ? kRightShoulder : 0) |
(state.button_system ? kGuide : 0) |
(state.button_south ? kButtonA : 0) |
(state.button_east ? kButtonB : 0) |
(state.button_west ? kButtonX : 0) |
(state.button_north ? kButtonY : 0);
report.left_trigger = controller_trigger_to_u8(state.left_trigger);
report.right_trigger = controller_trigger_to_u8(state.right_trigger);
report.left_x = state.left_stick_x;
report.left_y = invert_axis(state.left_stick_y);
report.right_x = state.right_stick_x;
report.right_y = invert_axis(state.right_stick_y);
return report;
}
inline bool parse_rumble_report(const uint8_t *data, uint32_t size,
SwitchRumbleOutput *output) {
ControllerRumbleOutput *output) {
if (data == nullptr || output == nullptr || size < 5 || data[0] != 0x00 ||
data[1] != 0x08) {
return false;