usbmuxd class implementation for usbmuxd

cpp/include/ffi.hpp

@@ -0,0 +1,29 @@
+// Jackson Coxson
+
+#ifndef IDEVICE_FFI
+#define IDEVICE_FFI
+
+#include "idevice.hpp"
+#include <string>
+
+namespace IdeviceFFI {
+struct FfiError {
+    int32_t         code = 0;
+    std::string     message;
+
+    static FfiError from(const IdeviceFfiError* err) {
+        FfiError out;
+        if (err) {
+            out.code    = err->code;
+            out.message = err->message ? err->message : "";
+            idevice_error_free(const_cast<IdeviceFfiError*>(err));
+        }
+        return out;
+    }
+
+    static FfiError success() { return {0, ""}; }
+
+    explicit        operator bool() const { return code != 0; }
+};
+} // namespace IdeviceFFI
+#endif