Fix usage of hid_init and hid_exit

Signed-off-by: Jacki <jacki@thejackimonster.de>

interface_lib/CMakeLists.txt

@@ -11,6 +11,7 @@ add_subdirectory(modules/Fusion/Fusion)
 add_library(
 		nrealAirLibrary
 		src/crc32.c
+		src/device.c
 		src/device3.c
 		src/device4.c
 		src/hid_ids.c

interface_lib/include/device.h

@@ -0,0 +1,46 @@
+#pragma once
+//
+// Created by thejackimonster on 19.12.23.
+//
+// Copyright (c) 2023 thejackimonster. All rights reserved.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+// 
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+//
+
+#ifndef __cplusplus
+#include <stdbool.h>
+#endif
+
+#ifndef __cplusplus
+#include <stdint.h>
+#else
+#include <cstdint>
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+bool device_init();
+
+void device_exit();
+
+#ifdef __cplusplus
+} // extern "C"
+#endif

interface_lib/src/device.c

@@ -0,0 +1,50 @@
+//
+// Created by thejackimonster on 19.12.23.
+//
+// Copyright (c) 2023 thejackimonster. All rights reserved.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+// 
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+//
+
+#include "device.h"
+
+#include <hidapi/hidapi.h>
+
+static size_t hid_device_counter = 0;
+
+bool device_init() {
+    if (0 != hid_init()) {
+        return false;
+    }
+
+    hid_device_counter++;
+    return true;
+}
+
+void device_exit() {
+    if (!hid_device_counter) {
+        return;
+    }
+
+    hid_device_counter--;
+
+    if (0 == hid_device_counter) {
+        hid_exit();
+    }
+}

interface_lib/src/device3.c

@@ -23,6 +23,7 @@
 //
 
 #include "device3.h"
+#include "device.h"
 
 #include <Fusion/FusionAxes.h>
 #include <Fusion/FusionMath.h>
@@ -198,7 +199,7 @@ device3_error_type device3_open(device3_type* device, device3_event_callback cal
 	device->product_id 	= 0;
 	device->callback 	= callback;
 	
-	if (0 != hid_init()) {
+	if (!device_init()) {
 		device3_error("Not initialized");
 		return DEVICE3_ERROR_NOT_INITIALIZED;
 	}
@@ -964,7 +965,7 @@ device3_error_type device3_close(device3_type* device) {
 	}
 	
 	memset(device, 0, sizeof(device3_type));
-	hid_exit();
+	device_exit();
 
 	return DEVICE3_ERROR_NO_ERROR;
 }

interface_lib/src/device4.c

@@ -23,6 +23,7 @@
 //
 
 #include "device4.h"
+#include "device.h"
 
 #include <stdbool.h>
 #include <stdint.h>
@@ -177,7 +178,7 @@ device4_error_type device4_open(device4_type* device, device4_event_callback cal
 	device->product_id 	= 0;
 	device->callback 	= callback;
 
-	if (0 != hid_init()) {
+	if (!device_init()) {
 		device4_error("Not initialized");
 		return DEVICE4_ERROR_NOT_INITIALIZED;
 	}
@@ -630,7 +631,7 @@ device4_error_type device4_close(device4_type* device) {
 	}
 	
 	memset(device, 0, sizeof(device4_type));
-	hid_exit();
+	device_exit();
 
 	return DEVICE4_ERROR_NO_ERROR;
 }