+/**
+ * @brief Enumerations of volume key type
+ */
+typedef enum
+{
+ VOLUME_KEY_TYPE_NONE=-1, /**< Volume key type for current played sound */
+ VOLUME_KEY_TYPE_SYSTEM=0, /**< Volume key type for system sound */
+ VOLUME_KEY_TYPE_NOTIFICATION, /**< Volume key type for notifications sound*/
+ VOLUME_KEY_TYPE_ALARM, /**< Volume key type for alarm sound */
+ VOLUME_KEY_TYPE_RINGTONE, /**< Volume key type for ringtones sound */
+ VOLUME_KEY_TYPE_MEDIA, /**< Volume key type for media sound */
+ VOLUME_KEY_TYPE_CALL, /**< Volume key type for call sound */
+} volume_key_type_e;