OpenPuck/PicoPuck/src/puck/mode_switch_hori.c

// mode_switch_hori.c — Switch HORIPAD emulated controller (ported from OpenPuck).
//
// 8-byte report, no report id: [btn_lo][btn_hi][hat][LX][LY][RX][RY][vendor].
// Nintendo face layout (A↔B / X↔Y swapped). No rumble/features.
//
// SPDX-License-Identifier: AGPL-3.0-or-later
#include "puck/emu.h"
#include "puck/gamepad_util.h"

static const uint8_t SWITCH_HID_DESC[] = {
	0x05, 0x01, 0x09, 0x05, 0xA1, 0x01, 0x15, 0x00, 0x25, 0x01, 0x35, 0x00,
	0x45, 0x01, 0x75, 0x01, 0x95, 0x10,
	0x05, 0x09, 0x19, 0x01, 0x29, 0x10, 0x81, 0x02, 0x05, 0x01, 0x25, 0x07,
	0x46, 0x3B, 0x01, 0x75, 0x04, 0x95, 0x01, 0x65, 0x14, 0x09, 0x39, 0x81,
	0x42,
	0x65, 0x00, 0x95, 0x01, 0x81, 0x01,
	0x26, 0xFF, 0x00, 0x46, 0xFF, 0x00, 0x09, 0x30, 0x09, 0x31, 0x09, 0x32,
	0x09, 0x35, 0x75, 0x08, 0x95, 0x04, 0x81, 0x02,
	0x06, 0x00, 0xFF, 0x09, 0x20, 0x95, 0x01, 0x81, 0x02,
	0x0A, 0x21, 0x26, 0x95, 0x08, 0x91, 0x02, 0xC0
};

static uint16_t hori_build(int slot, uint8_t *out, uint8_t *rid)
{
	*rid = 0;
	uint32_t b = g_in[slot].buttons;
	uint16_t btn = 0;
	// Nintendo layout (abSwap): A→B(0x02) B→A(0x04) X→Y(0x01) Y→X(0x08).
	if (b & TB_A) btn |= 0x02;
	if (b & TB_B) btn |= 0x04;
	if (b & TB_X) btn |= 0x01;
	if (b & TB_Y) btn |= 0x08;
	if (b & TB_LB) btn |= 0x10;
	if (b & TB_RB) btn |= 0x20;
	if (g_in[slot].lt >= SW_TRIG_ON || (b & TB_L2)) btn |= 0x40;  // ZL
	if (g_in[slot].rt >= SW_TRIG_ON || (b & TB_R2)) btn |= 0x80;  // ZR
	if (b & TB_MENU) btn |= 0x100;   // Minus
	if (b & TB_VIEW) btn |= 0x200;   // Plus
	if (b & TB_L3) btn |= 0x400;
	if (b & TB_R3) btn |= 0x800;
	if (b & TB_STEAM) btn |= 0x1000; // Home
	if (b & TB_QAM) btn |= 0x2000;   // Capture

	bool u = b & TB_DUP, d = b & TB_DDN, l = b & TB_DLF, r = b & TB_DRT;
	uint8_t hat = 8;
	if (u && r) hat = 1; else if (r && d) hat = 3;
	else if (d && l) hat = 5; else if (l && u) hat = 7;
	else if (u) hat = 0; else if (r) hat = 2;
	else if (d) hat = 4; else if (l) hat = 6;

	out[0] = (uint8_t)(btn & 0xFF);
	out[1] = (uint8_t)(btn >> 8);
	out[2] = hat;
	out[3] = sw_stick(g_in[slot].lx, false);
	out[4] = sw_stick(g_in[slot].ly, true);
	out[5] = sw_stick(g_in[slot].rx, false);
	out[6] = sw_stick(g_in[slot].ry, true);
	out[7] = 0;
	return 8;
}

const emu_mode_t emu_switch_hori = {
	.vid = 0x0F0D, .pid = 0x0092, .bcd = 0x0210,
	.product = "POKKEN CONTROLLER",
	.report_desc = SWITCH_HID_DESC,
	.report_desc_len = sizeof(SWITCH_HID_DESC),
	.build = hori_build,
	.get_report = NULL,
	.set_report = NULL,
	.poll_ms = 4,
};