add initial support for OpenFIRE

(WIP - UNTESTED)

Only the basics, it's missing all the extra features.

Simplicity for calibration is missing. Must go to `pause mode` first by pressing `C` and `SELECT` at the same time, then select profile, then calibrate, then confirm with trigger. Not user-friendly, need workaround for simplicity.

package/batocera/controllers/guns/openfire-guns/99-openfire-guns.rules

@@ -0,0 +1,8 @@
+# Three events at all time:
+# Keyboard, Mouse and Gamepad
+SUBSYSTEM=="input", KERNEL=="event*", ACTION=="add", ATTRS{name}=="OpenFIRE FIRECon Keyboard", ENV{ID_INPUT_JOYSTICK}="0", ENV{ID_INPUT_MOUSE}="0", ENV{ID_INPUT_KEYBOARD}="0", ENV{ID_INPUT_KEY}="0", RUN+="/usr/bin/openfire-guns-add"
+SUBSYSTEM=="input", KERNEL=="event*", ACTION=="add", ATTRS{name}=="OpenFIRE FIRECon Mouse", ENV{ID_INPUT_JOYSTICK}="0", ENV{ID_INPUT_MOUSE}="0", ENV{ID_INPUT_KEYBOARD}="0", ENV{ID_INPUT_KEY}="0", RUN+="/usr/bin/openfire-guns-add"
+SUBSYSTEM=="input", KERNEL=="event*", ACTION=="add", ATTRS{name}=="OpenFIRE FIRECon", ENV{ID_INPUT_JOYSTICK}="0", ENV{ID_INPUT_MOUSE}="0", ENV{ID_INPUT_KEYBOARD}="0", ENV{ID_INPUT_KEY}="0", RUN+="/usr/bin/openfire-guns-add"
+
+# Virtual Light Gun
+SUBSYSTEM=="input", ACTION=="add", ATTRS{name}=="OpenFIRE FIRECon light gun", MODE="0666", ENV{ID_INPUT_JOYSTICK}="0", ENV{ID_INPUT_GUN}="1", ENV{ID_INPUT_KEYBOARD}="0", ENV{ID_INPUT_KEY}="0", ENV{ID_INPUT_MOUSE}="1"

package/batocera/controllers/guns/openfire-guns/Config.in

@@ -0,0 +1,6 @@
+config BR2_PACKAGE_OPENFIRE_GUNS
+	bool "openfire-guns"
+	select BR2_PACKAGE_EVSIEVE
+
+	help
+	  openfire guns support

package/batocera/controllers/guns/openfire-guns/openfire-guns.mk

@@ -0,0 +1,15 @@
+################################################################################
+#
+# OpenFIRE FIRECon light guns
+#
+################################################################################
+OPENFIRE_GUNS_VERSION = 1
+OPENFIRE_GUNS_LICENSE = GPL
+OPENFIRE_GUNS_SOURCE =
+
+define openfire_GUNS_INSTALL_TARGET_CMDS
+  $(INSTALL) -m 0644 -D $(BR2_EXTERNAL_BATOCERA_PATH)/package/batocera/controllers/guns/openfire-guns/99-openfire-guns.rules              $(TARGET_DIR)/etc/udev/rules.d/99-openfire-guns.rules
+  $(INSTALL) -m 0755 -D $(BR2_EXTERNAL_BATOCERA_PATH)/package/batocera/controllers/guns/openfire-guns/openfire-guns-add                   $(TARGET_DIR)/usr/bin/openfire-guns-add
+endef
+
+$(eval $(generic-package))

package/batocera/controllers/guns/openfire-guns/virtual-openfire-add

@@ -0,0 +1,75 @@
+#!/bin/bash
+
+test "${ACTION}" = "add" || exit 0
+echo "${DEVNAME}" | grep -E "^/dev/input/event[0-9]+$" || exit 0
+
+PARENTHASH=$(evsieve-helper parent "${DEVNAME}" input usb)
+BASEFILE="/var/run/virtual-openfire-devices.${PARENTHASH}"
+PIDFILE="${BASEFILE}.pid"
+LOCKFILE="${BASEFILE}.lock"
+LOGFILE="${BASEFILE}.log"
+
+unlockAndExit() {
+    rmdir "${LOCKFILE}"
+    exit "${1}"
+}
+
+checkRunningPIDAndExit1() {
+    test ! -e "${PIDFILE}" && return 0
+    LPID=$(cat "${PIDFILE}")
+    test ! -d "/proc/${LPID}" && return 0
+    unlockAndExit 1
+}
+
+trylock() {
+    # lock
+    N=0
+    while ! mkdir "${LOCKFILE}"
+    do
+	sleep 1
+	let N++
+	test "${N}" -gt 30 && exit 1 # give up
+    done
+}
+
+trylock
+checkRunningPIDAndExit1
+
+CHILDREN=$(evsieve-helper children "${PARENTHASH}" input usb)
+NDEVS=$(echo "${CHILDREN}" | wc -l)
+
+if test "${NDEVS}" = 2
+then
+    DEV1=$(echo "${CHILDREN}" | head -1           | cut -f 1)
+    DEV2=$(echo "${CHILDREN}" | head -2 | tail -1 | cut -f 1)
+    DEV3=$(echo "${CHILDREN}" | head -3 | tail -1 | cut -f 1)
+
+    # Based on the enclosed instruction book from official Github
+    #
+    # Trigger                           : BTN_LEFT
+    # A / PUMP                          : BTN_RIGHT
+    # B                                 : BTN_MIDDLE
+    # Foot pedal / C                    : BTN_SIDE
+    # Alt pedal                         : BTN_EXTRA
+    # Start                             : KEY_1
+    # Select                            : KEY_5
+    # D-pad up                          : KEY_UP
+    # D-pad down                        : KEY_DOWN
+    # D-pad left                        : KEY_LEFT
+    # D-pad right                       : KEY_RIGHT
+
+    nohup evsieve --input "${DEV1}" "${DEV2}" "${DEV3}" persist=exit --map yield btn:middle btn:2
+                                                                     --map yield btn:side btn:right
+                                                                     --map yield key:1 btn:middle
+                                                                     --map yield key:5 btn:1
+                                                                     --map yield key:up btn:5
+                                                                     --map yield key:down btn:6
+                                                                     --map yield key:left btn:7
+                                                                     --map yield key:right btn:8
+                                                                     --output name="OpenFIRE light gun" >/dev/null 2>"${LOGFILE}" &
+    echo $! > "${PIDFILE}"
+else
+    unlockAndExit 1
+fi
+
+unlockAndExit 0

package/batocera/core/batocera-system/Config.in

@@ -243,7 +243,7 @@ config BR2_PACKAGE_BATOCERA_SYSTEM
 	select BR2_PACKAGE_LIBCURL_CURL				# download tools
 	select BR2_PACKAGE_NGHTTP2				# required for curl http2
 	select BR2_PACKAGE_CA_CERTIFICATES			# ssl certificates
-	
+
 	# Used for screen rotation (SDL, Retroarch, Moonlight)
 	select BR2_PACKAGE_ROCKCHIP_RGA    if BR2_PACKAGE_BATOCERA_TARGET_RK3326 || \
 	                                      BR2_PACKAGE_BATOCERA_TARGET_RK3128 || \
@@ -1493,6 +1493,7 @@ config BR2_PACKAGE_BATOCERA_GUNS
 	select BR2_PACKAGE_AELIGHTGUN				# ae light gun
 	select BR2_PACKAGE_GUN4IR_GUNS				# gun4ir guns
 	select BR2_PACKAGE_RETROSHOOTER_GUNS			# retroshooter guns
+	select BR2_PACKAGE_OPENFIRE_GUNS			# openfire guns
 	select BR2_PACKAGE_GUNCON				if BR2_PACKAGE_BATOCERA_TARGET_X86_64_ANY || BR2_PACKAGE_BATOCERA_TARGET_BCM2711 || BR2_PACKAGE_BATOCERA_TARGET_BCM2837 # guncon
 	select BR2_PACKAGE_GUNCON3				if !BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_4_4 # guncon3
 	select BR2_PACKAGE_LIGHTGUNS_GAMES_PRECALIBRATIONS