From 17ed86acaee20590b3ef4d1eea10f2fd27bd3350 Mon Sep 17 00:00:00 2001
From: Jedidiah Barber <contact@jedbarber.id.au>
Date: Mon, 17 Jul 2023 00:59:56 +1200
Subject: Split binding into a minimal hierarchy, improved documentation
 slightly

---
 src/portaudio-devices.ads | 171 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 171 insertions(+)
 create mode 100644 src/portaudio-devices.ads

(limited to 'src/portaudio-devices.ads')

diff --git a/src/portaudio-devices.ads b/src/portaudio-devices.ads
new file mode 100644
index 0000000..aae6674
--- /dev/null
+++ b/src/portaudio-devices.ads
@@ -0,0 +1,171 @@
+
+
+--  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;
+
+
-- 
cgit