enum media_player_states {
       MEDIA_PLAYER_STATE_ERROR = 0, MEDIA_PLAYER_IDLE = 1 << 0, MEDIA_PLAYER_INITIALIZED = 1 << 1, MEDIA_PLAYER_PREPARING = 1 << 2, MEDIA_PLAYER_PREPARED = 1 << 3, MEDIA_PLAYER_STARTED = 1 << 4, MEDIA_PLAYER_PAUSED = 1 << 5, MEDIA_PLAYER_STOPPED = 1 << 6, MEDIA_PLAYER_PLAYBACK_COMPLETE = 1 << 7 };