text stringlengths 0 234 |
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FF_Gain_Code : constant := 16#60#; |
Event : constant Input_Dev.Input_Event := |
(Time => (0, 0), |
Event => Force_Feedback, |
Code => FF_Gain_Code, |
Value => Interfaces.C.int (16#FF_FF.00# * Value)); |
Result_Unused : constant Input_Dev.Result := Input_Dev.Write (Object.FD, Event); |
begin |
-- Ignore any possible errors. If the device has been disconnected |
-- then playing a force-feedback effect will fail, which can be |
-- detected by the boolean returned by Play_Force_Feedback_Effect. |
null; |
end Set_Force_Feedback_Gain; |
procedure Set_Force_Feedback_Auto_Center |
(Object : Input_Device; |
Value : Force_Feedback_Auto_Center) |
is |
FF_Auto_Center_Code : constant := 16#61#; |
Event : constant Input_Dev.Input_Event := |
(Time => (0, 0), |
Event => Force_Feedback, |
Code => FF_Auto_Center_Code, |
Value => Interfaces.C.int (16#FF_FF.00# * Value)); |
Result_Unused : constant Input_Dev.Result := Input_Dev.Write (Object.FD, Event); |
begin |
-- Ignore any possible errors. If the device has been disconnected |
-- then playing a force-feedback effect will fail, which can be |
-- detected by the boolean returned by Play_Force_Feedback_Effect. |
null; |
end Set_Force_Feedback_Auto_Center; |
function Play_Force_Feedback_Effect |
(Object : Input_Device; |
Identifier : Uploaded_Force_Feedback_Effect_ID; |
Count : Natural := 1) return Boolean |
is |
Event : constant Input_Dev.Input_Event := |
(Time => (0, 0), |
Event => Force_Feedback, |
Code => Interfaces.C.unsigned_short (Identifier), |
Value => Interfaces.C.int (Count)); |
Result : constant Input_Dev.Result := Input_Dev.Write (Object.FD, Event); |
begin |
return Result.Is_Success; |
end Play_Force_Feedback_Effect; |
function Name (Object : Input_Device) return String is |
Result : aliased String (1 .. 128) := (others => ' '); |
Length : constant Integer := Event_Device.Input_Dev.IO_Control |
(Object.FD, (Read, 'E', 16#06#, Result'Length), Result'Address); |
begin |
return (if Length > 0 then Result (1 .. Length - 1) else ""); |
end Name; |
function Is_Open (Object : Input_Device) return Boolean is |
(Object.Open); |
function Open |
(Object : in out Input_Device; |
File_Name : String; |
Blocking : Boolean := True) return Boolean |
is |
Result : constant Input_Dev.Result := Input_Dev.Open (File_Name, Blocking => Blocking); |
begin |
if Result.Is_Success then |
Object.FD := Result.FD; |
end if; |
Object.Open := Result.Is_Success; |
return Object.Open; |
end Open; |
procedure Close (Object : in out Input_Device) is |
Result : constant Input_Dev.Result := Input_Dev.Close (Object.FD); |
begin |
Object.FD := -1; |
Object.Open := not Result.Is_Success; |
end Close; |
overriding procedure Finalize (Object : in out Input_Device) is |
begin |
if Object.Is_Open then |
Object.Close; |
end if; |
end Finalize; |
function Read |
(Object : Input_Device; |
Value : out State) return Read_Result |
is |
use Event_Device.Input_Dev; |
use type Interfaces.C.unsigned_short; |
use type Interfaces.C.int; |
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