Add virtual joystick output for macOS

Based of the foohid IOKit driver for implementing virtual HID devices.

Issue: #236

1 files changed, 51 insertions, 0 deletions

diff --git a/proto-iokit-foohid/foohidjoystick.h b/proto-iokit-foohid/foohidjoystick.h
new file mode 100644
index 00000000..a1f74304
--- /dev/null
+++ b/proto-iokit-foohid/foohidjoystick.h
@@ -0,0 +1,51 @@
+/* Copyright (c) 2017, Eike Ziller                                               *
+ *                                                                               *
+ * Permission to use, copy, modify, and/or distribute this software for any      *
+ * purpose with or without fee is hereby granted, provided that the above        *
+ * copyright notice and this permission notice appear in all copies.             *
+ */
+
+#pragma once
+
+#include <QByteArray>
+#include <QString>
+
+#include <IOKit/IOKitLib.h>
+
+struct JoystickValues {
+    uint8_t x;
+    uint8_t y;
+    uint8_t z;
+    uint8_t rx;
+    uint8_t ry;
+    uint8_t rz;
+};
+
+class FooHIDJoystick
+{
+public:
+    FooHIDJoystick(const QByteArray &name, const QByteArray &serialNumber);
+    ~FooHIDJoystick();
+
+    bool hasError() const;
+    QString errorMessage() const;
+
+    int minValue() const { return 0; }
+    int range() const { return 255; }
+
+    void setValue(JoystickValues newValues);
+
+private:
+    bool createDevice() const;
+    bool sendToDevice() const;
+    void destroyDevice() const;
+
+    const QByteArray name;
+    const QByteArray serialNumber;
+    io_connect_t connection = 0;
+    JoystickValues values = {127, 127};
+    QString _errorMessage;
+    bool _hasError = true;
+    bool connectionOpened = false;
+    bool deviceCreated = false;
+};