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391 | with Interfaces.C.Strings; use Interfaces.C.Strings;
with Interfaces.C; use Interfaces.C;
with Ada.Unchecked_Deallocation;
package body RtMIDI is
type RtMIDIWrapper is record
Ptr : System.Address;
Data : System.Address;
Ok : Interfaces.C.Extensions.bool;
Msg : char_array_access;
end record;
-----------
-- Error --
-----------
function Error (Device : MIDI_Any) return Boolean
is
Wrapper : RtMIDIWrapper
with Import, Address => System.Address (Device);
begin
return not Boolean (Wrapper.Ok);
end Error;
-------------------
-- Error_Message --
-------------------
function Error_Message (Device : MIDI_Any) return String is
Wrapper : RtMIDIWrapper
with Import, Address => System.Address (Device);
begin
if Boolean (Wrapper.Ok) or else Wrapper.Msg = null then
return "No error";
end if;
return To_Ada (Wrapper.Msg.all);
end Error_Message;
--------------------------
-- Available_Port_Count --
--------------------------
function Available_Port_Count (Device : MIDI_Any) return Natural is
begin
return Natural (rtmidi_get_port_count (Device));
end Available_Port_Count;
---------------
-- Port_Name --
---------------
function Port_Name (Device : MIDI_Any;
Port_Numer : Positive)
return String
is
Len : aliased int;
Err : int;
begin
Err := rtmidi_get_port_name (Device,
unsigned (Port_Numer),
bufOut => Null_Ptr,
bufLen => Len'Access);
if Err < 0 or else Len <= 0 then
return "";
end if;
declare
procedure Free
is new Ada.Unchecked_Deallocation (char_array, char_array_access);
C_Str : char_array_access := new char_array (1 .. size_t (Len));
begin
Err := rtmidi_get_port_name (Device,
unsigned (Port_Numer),
bufOut => To_Chars_Ptr (C_Str),
bufLen => Len'Access);
if Err < 0 then
return "";
end if;
return Result : constant String := To_Ada (C_Str.all) do
Free (C_Str);
end return;
end;
end Port_Name;
--------------------
-- Create_Default --
--------------------
function Create_Default return MIDI_In is
begin
return MIDI_In (rtmidi_in_create_default);
end Create_Default;
------------
-- Create --
------------
function Create (Device_Name : String;
API : RtMidiApi := API_UNSPECIFIED;
Queue_Size_Limit : Natural := 100)
return MIDI_In
is
Ret : MIDI_In;
C_Name : chars_ptr := New_String (Device_Name);
begin
Ret := rtmidi_in_create (API, C_Name, unsigned (Queue_Size_Limit));
Free (C_Name);
return Ret;
end Create;
----------
-- Free --
----------
procedure Free (Device : in out MIDI_In) is
begin
rtmidi_in_free (Device);
Device := MIDI_In (System.Null_Address);
end Free;
--------------------------
-- Available_Port_Count --
--------------------------
function Available_Port_Count (Device : MIDI_In) return Natural
is (Available_Port_Count (MIDI_Any (Device)));
---------------
-- Port_Name --
---------------
function Port_Name (Device : MIDI_In;
Port_Numer : Positive)
return String
is (Port_Name (MIDI_Any (Device), Port_Numer));
---------------
-- Open_Port --
---------------
procedure Open_Port (Device : MIDI_In;
Port_Number : Natural;
Name : String)
is
C_Name : chars_ptr := New_String (Name);
begin
rtmidi_open_port (MIDI_Any (Device),
Interfaces.C.unsigned (Port_Number),
C_Name);
Free (C_Name);
end Open_Port;
-------------------------
-- Create_Virtual_Port --
-------------------------
procedure Create_Virtual_Port (Device : MIDI_In;
Name : String := "RtMIDI Input")
is
C_Name : chars_ptr := New_String (Name);
begin
rtmidi_open_virtual_port (MIDI_Any (Device), C_Name);
Free (C_Name);
end Create_Virtual_Port;
----------------
-- Close_Port --
----------------
procedure Close_Port (Device : MIDI_In) is
begin
rtmidi_close_port (MIDI_Any (Device));
end Close_Port;
---------------------
-- Ignore_Messages --
---------------------
procedure Ignore_Messages (Device : MIDI_In;
SysEx : Boolean;
Time : Boolean;
Sense : Boolean)
is
begin
rtmidi_in_ignore_types (Device,
Interfaces.C.Extensions.bool (SysEx),
Interfaces.C.Extensions.bool (Time),
Interfaces.C.Extensions.bool (Sense));
end Ignore_Messages;
-----------------
-- Get_Message --
-----------------
function Get_Message (Device : MIDI_In)
return System.Storage_Elements.Storage_Array
is
use System.Storage_Elements;
Message : Storage_Array (1 .. 1024);
Size : aliased size_t;
Unused : double;
begin
Unused := Get_Message (Device, Message'Address, Size'Access);
return Message (1 .. Storage_Offset (Size));
end Get_Message;
-----------------
-- Get_Message --
-----------------
function Get_Message (Device : MIDI_In;
Message : System.Address;
Size : not null access Interfaces.C.size_t)
return Interfaces.C.double
is
begin
return rtmidi_in_get_message (Device, Message, Size);
end Get_Message;
------------------
-- Set_Callback --
------------------
procedure Set_Callback (Device : MIDI_In;
Callback : Input_Callback_C;
User_Data : System.Address := System.Null_Address)
is
begin
if Callback /= null then
rtmidi_in_set_callback (Device, Callback, User_Data);
else
rtmidi_in_cancel_callback (Device);
end if;
end Set_Callback;
-----------
-- Error --
-----------
function Error (Device : MIDI_In) return Boolean
is (Error (MIDI_Any (Device)));
-------------------
-- Error_Message --
-------------------
function Error_Message (Device : MIDI_In) return String
is (Error_Message (MIDI_Any (Device)));
--------------------
-- Create_Default --
--------------------
function Create_Default return MIDI_Out is
begin
return MIDI_Out (rtmidi_out_create_default);
end Create_Default;
------------
-- Create --
------------
function Create (Device_Name : String;
API : RtMidiApi := API_UNSPECIFIED)
return MIDI_Out
is
Ret : MIDI_Out;
C_Name : chars_ptr := New_String (Device_Name);
begin
Ret := rtmidi_out_create (API, C_Name);
Free (C_Name);
return Ret;
end Create;
----------
-- Free --
----------
procedure Free (Device : in out MIDI_Out) is
begin
rtmidi_out_free (Device);
Device := MIDI_Out (System.Null_Address);
end Free;
--------------------------
-- Available_Port_Count --
--------------------------
function Available_Port_Count (Device : MIDI_Out) return Natural
is (Available_Port_Count (MIDI_Any (Device)));
---------------
-- Port_Name --
---------------
function Port_Name (Device : MIDI_Out;
Port_Numer : Positive)
return String
is (Port_Name (MIDI_Any (Device), Port_Numer));
---------------
-- Open_Port --
---------------
procedure Open_Port (Device : MIDI_Out;
Port_Number : Natural;
Name : String)
is
C_Name : chars_ptr := New_String (Name);
begin
rtmidi_open_port (MIDI_Any (Device),
Interfaces.C.unsigned (Port_Number),
C_Name);
Free (C_Name);
end Open_Port;
-------------------------
-- Create_Virtual_Port --
-------------------------
procedure Create_Virtual_Port (Device : MIDI_Out;
Name : String := "RtMidi Output")
is
C_Name : chars_ptr := New_String (Name);
begin
rtmidi_open_virtual_port (MIDI_Any (Device), C_Name);
Free (C_Name);
end Create_Virtual_Port;
----------------
-- Close_Port --
----------------
procedure Close_Port (Device : MIDI_Out) is
begin
rtmidi_close_port (MIDI_Any (Device));
end Close_Port;
------------------
-- Send_Message --
------------------
procedure Send_Message
(Device : MIDI_Out;
Message : System.Storage_Elements.Storage_Array;
Success : out Boolean)
is
begin
Success := rtmidi_out_send_message (Device,
Message'Address,
Message'Length) = 0;
end Send_Message;
------------------
-- Send_Message --
------------------
procedure Send_Message (Device : MIDI_Out;
Message : System.Address;
Len : Interfaces.C.int;
Success : out Boolean)
is
begin
Success := rtmidi_out_send_message (Device, Message, Len) = 0;
end Send_Message;
-----------
-- Error --
-----------
function Error (Device : MIDI_Out) return Boolean
is (Error (MIDI_Any (Device)));
-------------------
-- Error_Message --
-------------------
function Error_Message (Device : MIDI_Out) return String
is (Error_Message (MIDI_Any (Device)));
end RtMIDI;
|