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-- Programmed by Jedidiah Barber
-- Released into the public domain
pragma Ada_2012;
private with
Interfaces.C.Strings,
System;
package Portaudio.Devices is
---------------------------------
-- Data Types and Structures --
---------------------------------
type Host_API_Info is tagged private;
function Kind
(Info : in Host_API_Info)
return Host_API_Kind;
function Name
(Info : in Host_API_Info)
return String;
function Device_Count
(Info : in Host_API_Info)
return Natural;
function Default_Input_Device
(Info : in Host_API_Info)
return Device_Index;
function Default_Output_Device
(Info : in Host_API_Info)
return Device_Index;
type Device_Info is tagged private;
function Name
(Info : in Device_Info)
return String;
function Host_API
(Info : in Device_Info)
return Host_API_Index;
function Max_Input_Channels
(Info : in Device_Info)
return Natural;
function Max_Output_Channels
(Info : in Device_Info)
return Natural;
function Default_Low_Input_Latency
(Info : in Device_Info)
return Time;
function Default_Low_Output_Latency
(Info : in Device_Info)
return Time;
function Default_High_Input_Latency
(Info : in Device_Info)
return Time;
function Default_High_Output_Latency
(Info : in Device_Info)
return Time;
function Default_Sample_Rate
(Info : in Device_Info)
return Hertz;
-----------------------
-- API Subprograms --
-----------------------
function Get_Host_API_Count
return Natural;
function Get_Default_Host_API
return Host_API_Index
with Post => Get_Default_Host_API'Result in
Host_API_Index (1) .. Host_API_Index (Get_Host_API_Count);
function Get_Host_API_Info
(Index : in Host_API_Index)
return Host_API_Info
with Pre => Index in Host_API_Index (1) .. Host_API_Index (Get_Host_API_Count);
function To_Host_API_Index
(Kind : in Host_API_Kind)
return Host_API_Index
with Post => To_Host_API_Index'Result in
Host_API_Index (1) .. Host_API_Index (Get_Host_API_Count);
function To_Device_Index
(Host_API : in Host_API_Index;
Host_Device : in Positive)
return Device_Index
with Pre => Host_API in Host_API_Index (1) .. Host_API_Index (Get_Host_API_Count) and
Host_Device in 1 .. Get_Host_API_Info (Host_API).Device_Count,
Post => To_Device_Index'Result in
Device_Index (1) .. Device_Index (Get_Device_Count);
function Get_Device_Count
return Natural;
function Get_Default_Input_Device
return Device_Index;
function Get_Default_Output_Device
return Device_Index;
function Get_Device_Info
(Index : in Device_Index)
return Device_Info
with Pre => Index in Device_Index (1) .. Device_Index (Get_Device_Count);
private
type C_Host_API_Info is record
My_Struct_Version : Interfaces.C.int;
My_Host_API_Type : Interfaces.C.int;
My_Name : Interfaces.C.Strings.chars_ptr;
My_Device_Count : Interfaces.C.int;
My_Default_Input : Interfaces.C.int;
My_Default_Output : Interfaces.C.int;
end record with Convention => C;
type Host_API_Info is tagged record
Ptr : System.Address;
end record;
type C_Device_Info is record
My_Struct_Version : Interfaces.C.int;
My_Name : Interfaces.C.Strings.chars_ptr;
My_Host_API_Index : Interfaces.C.int;
My_Input_Channels : Interfaces.C.int;
My_Output_Channels : Interfaces.C.int;
My_Low_Input_Latency : Interfaces.C.double;
My_Low_Output_Latency : Interfaces.C.double;
My_High_Input_Latency : Interfaces.C.double;
My_High_Output_Latency : Interfaces.C.double;
My_Sample_Rate : Interfaces.C.double;
end record with Convention => C;
type Device_Info is tagged record
Ptr : System.Address;
end record;
end Portaudio.Devices;
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