+/**
+ * VLC value structure
+ */
+typedef union
+{
+ int64_t i_int;
+ bool b_bool;
+ float f_float;
+ char * psz_string;
+ void * p_address;
+ vlc_object_t * p_object;
+ vlc_list_t * p_list;
+ mtime_t i_time;
+ struct { int32_t x; int32_t y; } coords;
+
+} vlc_value_t;
+
+/**
+ * VLC list structure
+ */
+struct vlc_list_t
+{
+ int i_count;
+ vlc_value_t * p_values;
+ int * pi_types;
+
+};
+
+/**
+ * \defgroup var_type Variable types
+ * These are the different types a vlc variable can have.
+ * @{
+ */
+#define VLC_VAR_VOID 0x0010
+#define VLC_VAR_BOOL 0x0020
+#define VLC_VAR_INTEGER 0x0030
+#define VLC_VAR_HOTKEY 0x0031
+#define VLC_VAR_STRING 0x0040
+#define VLC_VAR_MODULE 0x0041
+#define VLC_VAR_FILE 0x0042
+#define VLC_VAR_DIRECTORY 0x0043
+#define VLC_VAR_VARIABLE 0x0044
+#define VLC_VAR_FLOAT 0x0050
+#define VLC_VAR_TIME 0x0060
+#define VLC_VAR_ADDRESS 0x0070
+#define VLC_VAR_MUTEX 0x0080
+#define VLC_VAR_COORDS 0x00A0
+/**@}*/
+
+/*****************************************************************************
+ * Error values (shouldn't be exposed)
+ *****************************************************************************/
+#define VLC_SUCCESS -0 /* No error */
+#define VLC_ENOMEM -1 /* Not enough memory */
+#define VLC_ETIMEOUT -3 /* Timeout */
+
+#define VLC_ENOMOD -10 /* Module not found */
+
+#define VLC_ENOOBJ -20 /* Object not found */
+
+#define VLC_ENOVAR -30 /* Variable not found */
+#define VLC_EBADVAR -31 /* Bad variable value */
+
+#define VLC_ENOITEM -40 /**< Item not found */
+
+#define VLC_EEXIT -255 /* Program exited */
+#define VLC_EEXITSUCCESS -999 /* Program exited successfully */
+#define VLC_EGENERIC -666 /* Generic error */
+