diff options
Diffstat (limited to 'src/portaudio.ads')
| -rw-r--r-- | src/portaudio.ads | 705 |
1 files changed, 9 insertions, 696 deletions
diff --git a/src/portaudio.ads b/src/portaudio.ads index bc07a44..2744047 100644 --- a/src/portaudio.ads +++ b/src/portaudio.ads @@ -4,9 +4,8 @@ -- Released into the public domain -with +pragma Ada_2012; - Interfaces; private with @@ -18,9 +17,9 @@ private with package Portaudio is - ----------------------- + --------------------------------- -- Data Types and Structures -- - ----------------------- + --------------------------------- type Version_Number is record Major : Natural; @@ -77,37 +76,14 @@ package Portaudio is Audio_Science_HPI_Host, Sndio_Host); + type Host_API_Index is new Positive; type Device_Index is new Natural; - No_Device : constant Device_Index; - 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 Time is delta 10.0**(-4) digits 12; function Image @@ -131,324 +107,6 @@ package Portaudio is return String; - 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; - - - type Sample_Format is - (Float_32_Sample, - Int_32_Sample, - Int_24_Sample, - Int_16_Sample, - Int_8_Sample, - UInt_8_Sample); - - - type Float_32 is new Float; - for Float_32'Size use 32; - type Float_32_Array is array (Positive range <>) of Float_32; - - type Int_32 is new Interfaces.Integer_32; - type Int_32_Array is array (Positive range <>) of Int_32; - - type Int_24 is range -2 ** 23 .. 2 ** 23 - 1; - for Int_24'Size use 24; - type Int_24_Array is array (Positive range <>) of Int_24; - - type Int_16 is new Interfaces.Integer_16; - type Int_16_Array is array (Positive range <>) of Int_16; - - type Int_8 is new Interfaces.Integer_8; - type Int_8_Array is array (Positive range <>) of Int_8; - - type UInt_8 is new Interfaces.Unsigned_8; - type UInt_8_Array is array (Positive range <>) of UInt_8; - - - type Frame_Amount is new Interfaces.Unsigned_32; - - - type Sample_Buffer is tagged private; - - function Kind - (Buffer : in Sample_Buffer) - return Sample_Format; - - function Channels - (Buffer : in Sample_Buffer) - return Natural; - - function Frames - (Buffer : in Sample_Buffer) - return Frame_Amount; - - function Get - (Buffer : in Sample_Buffer; - Frame : in Frame_Amount; - Channel : in Positive) - return Float_32 - with Pre => Buffer.Kind = Float_32_Sample; - - function Get - (Buffer : in Sample_Buffer; - Frame : in Frame_Amount; - Channel : in Positive) - return Int_32 - with Pre => Buffer.Kind = Int_32_Sample; - - function Get - (Buffer : in Sample_Buffer; - Frame : in Frame_Amount; - Channel : in Positive) - return Int_24 - with Pre => Buffer.Kind = Int_24_Sample; - - function Get - (Buffer : in Sample_Buffer; - Frame : in Frame_Amount; - Channel : in Positive) - return Int_16 - with Pre => Buffer.Kind = Int_16_Sample; - - function Get - (Buffer : in Sample_Buffer; - Frame : in Frame_Amount; - Channel : in Positive) - return Int_8 - with Pre => Buffer.Kind = Int_8_Sample; - - function Get - (Buffer : in Sample_Buffer; - Frame : in Frame_Amount; - Channel : in Positive) - return UInt_8 - with Pre => Buffer.Kind = UInt_8_Sample; - - procedure Put - (Buffer : in Sample_Buffer; - Frame : in Frame_Amount; - Channel : in Positive; - Value : in Float_32) - with Pre => Buffer.Kind = Float_32_Sample; - - procedure Put - (Buffer : in Sample_Buffer; - Frame : in Frame_Amount; - Channel : in Positive; - Value : in Int_32) - with Pre => Buffer.Kind = Int_32_Sample; - - procedure Put - (Buffer : in Sample_Buffer; - Frame : in Frame_Amount; - Channel : in Positive; - Value : in Int_24) - with Pre => Buffer.Kind = Int_24_Sample; - - procedure Put - (Buffer : in Sample_Buffer; - Frame : in Frame_Amount; - Channel : in Positive; - Value : in Int_16) - with Pre => Buffer.Kind = Int_16_Sample; - - procedure Put - (Buffer : in Sample_Buffer; - Frame : in Frame_Amount; - Channel : in Positive; - Value : in Int_8) - with Pre => Buffer.Kind = Int_8_Sample; - - procedure Put - (Buffer : in Sample_Buffer; - Frame : in Frame_Amount; - Channel : in Positive; - Value : in UInt_8) - with Pre => Buffer.Kind = UInt_8_Sample; - - - function Wrap - (Store : access Float_32_Array; - Frames : in Frame_Amount; - Channels : in Natural) - return Sample_Buffer - with Pre => Store.all'Length = Frames * Frame_Amount (Channels); - - function Wrap - (Store : access Int_32_Array; - Frames : in Frame_Amount; - Channels : in Natural) - return Sample_Buffer - with Pre => Store.all'Length = Frames * Frame_Amount (Channels); - - function Wrap - (Store : access Int_24_Array; - Frames : in Frame_Amount; - Channels : in Natural) - return Sample_Buffer - with Pre => Store.all'Length = Frames * Frame_Amount (Channels); - - function Wrap - (Store : access Int_16_Array; - Frames : in Frame_Amount; - Channels : in Natural) - return Sample_Buffer - with Pre => Store.all'Length = Frames * Frame_Amount (Channels); - - function Wrap - (Store : access Int_8_Array; - Frames : in Frame_Amount; - Channels : in Natural) - return Sample_Buffer - with Pre => Store.all'Length = Frames * Frame_Amount (Channels); - - function Wrap - (Store : access UInt_8_Array; - Frames : in Frame_Amount; - Channels : in Natural) - return Sample_Buffer - with Pre => Store.all'Length = Frames * Frame_Amount (Channels); - - - type Stream_Parameters is private; - - function Create - (Device : in Device_Index; - Channels : in Natural; - Format : in Sample_Format; - Latency : in Time) - return Stream_Parameters - with Pre => Device /= No_Device; - - - type Stream_Flags is private; - - function "+" - (A, B : in Stream_Flags) - return Stream_Flags; - - -- No flags - No_Flag : constant Stream_Flags; - - -- Disable default clipping - Clip_Off_Flag : constant Stream_Flags; - - -- Disable default dithering - Dither_Off_Flag : constant Stream_Flags; - - -- Never drop input - Never_Drop_Flag : constant Stream_Flags; - - -- Prime output buffers using stream callback - Prime_Output_Flag : constant Stream_Flags; - - - type Audio_Stream is tagged limited private; - - - type Stream_Info is tagged private; - - function Input_Latency - (Info : in Stream_Info) - return Time; - - function Output_Latency - (Info : in Stream_Info) - return Time; - - function Sample_Rate - (Info : in Stream_Info) - return Hertz; - - - type Callback_Result is (Continue, Complete, Finish); - - - type Callback_Time_Info is tagged private; - - function Input_ADC_Time - (Info : in Callback_Time_Info) - return Time; - - function Current_Time - (Info : in Callback_Time_Info) - return Time; - - function Output_DAC_Time - (Info : in Callback_Time_Info) - return Time; - - - type Callback_Flags is private; - - function Has_Input_Underflow - (Flags : in Callback_Flags) - return Boolean; - - function Has_Input_Overflow - (Flags : in Callback_Flags) - return Boolean; - - function Has_Output_Underflow - (Flags : in Callback_Flags) - return Boolean; - - function Has_Output_Overflow - (Flags : in Callback_Flags) - return Boolean; - - function Has_Priming_Output - (Flags : in Callback_Flags) - return Boolean; - - - -- Due to how void pointers are wrapped into Sample_Buffers - -- the Output here is given as 'in' mode, but you can still - -- write to it just fine using the Put subprograms - type Callback_Function is access function - (Input : in Sample_Buffer; - Output : in Sample_Buffer; - Frames : in Frame_Amount; - Timing : in Callback_Time_Info; - Flags : in Callback_Flags) - return Callback_Result; - - ------------------ @@ -518,20 +176,9 @@ package Portaudio is - --------------- - -- Utility -- - --------------- - - function Is_Open - (Stream : in Audio_Stream) - return Boolean; - - - - - ------------------------------- - -- Auxiliary API Interface -- - ------------------------------- + ----------------------- + -- API Subprograms -- + ----------------------- function Get_Version return Version_Number; @@ -539,211 +186,6 @@ package Portaudio is function Get_Version_Info return Version_Info; - 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); - - function Is_Format_Supported - (Input : access Stream_Parameters; - Output : access Stream_Parameters; - Rate : in Hertz) - return Boolean; - - function Get_Sample_Size - (Format : in Sample_Format) - return Positive; - - - - - ---------------------------- - -- Stream API Interface -- - ---------------------------- - - procedure Open_Input - (Stream : in out Audio_Stream; - Input_Params : in Stream_Parameters; - Sample_Rate : in Hertz; - Buffer_Frames : in Frame_Amount; - Flags : in Stream_Flags; - Callback : in Callback_Function) - with Pre => not Stream.Is_Open, - Post => Stream.Is_Open; - - procedure Open_Output - (Stream : in out Audio_Stream; - Output_Params : in Stream_Parameters; - Sample_Rate : in Hertz; - Buffer_Frames : in Frame_Amount; - Flags : in Stream_Flags; - Callback : in Callback_Function) - with Pre => not Stream.Is_Open, - Post => Stream.Is_Open; - - procedure Open_Full - (Stream : in out Audio_Stream; - Input_Params : in Stream_Parameters; - Output_Params : in Stream_Parameters; - Sample_Rate : in Hertz; - Buffer_Frames : in Frame_Amount; - Flags : in Stream_Flags; - Callback : in Callback_Function) - with Pre => not Stream.Is_Open, - Post => Stream.Is_Open; - - procedure Open_Input_Blocking - (Stream : in out Audio_Stream; - Input_Params : in Stream_Parameters; - Sample_Rate : in Hertz; - Buffer_Frames : in Frame_Amount; - Flags : in Stream_Flags) - with Pre => not Stream.Is_Open, - Post => Stream.Is_Open; - - procedure Open_Output_Blocking - (Stream : in out Audio_Stream; - Output_Params : in Stream_Parameters; - Sample_Rate : in Hertz; - Buffer_Frames : in Frame_Amount; - Flags : in Stream_Flags) - with Pre => not Stream.Is_Open, - Post => Stream.Is_Open; - - procedure Open_Full_Blocking - (Stream : in out Audio_Stream; - Input_Params : in Stream_Parameters; - Output_Params : in Stream_Parameters; - Sample_Rate : in Hertz; - Buffer_Frames : in Frame_Amount; - Flags : in Stream_Flags) - with Pre => not Stream.Is_Open, - Post => Stream.Is_Open; - - procedure Open_Default - (Stream : in out Audio_Stream; - Input_Channels : in Natural; - Output_Channels : in Natural; - Format : in Sample_Format; - Sample_Rate : in Hertz; - Buffer_Frames : in Frame_Amount; - Callback : in Callback_Function) - with Pre => not Stream.Is_Open and - (Input_Channels > 0 or Output_Channels > 0), - Post => Stream.Is_Open; - - procedure Open_Default_Blocking - (Stream : in out Audio_Stream; - Input_Channels : in Natural; - Output_Channels : in Natural; - Format : in Sample_Format; - Sample_Rate : in Hertz; - Buffer_Frames : in Frame_Amount) - with Pre => not Stream.Is_Open and - (Input_Channels > 0 or Output_Channels > 0), - Post => Stream.Is_Open; - - procedure Close - (Stream : in out Audio_Stream) - with Pre => Stream.Is_Open, - Post => not Stream.Is_Open; - - procedure Start - (Stream : in Audio_Stream) - with Pre => Stream.Is_Open; - - procedure Stop - (Stream : in Audio_Stream) - with Pre => Stream.Is_Open; - - procedure Term - (Stream : in Audio_Stream) - with Pre => Stream.Is_Open; - - function Is_Stopped - (Stream : in Audio_Stream) - return Boolean - with Pre => Stream.Is_Open; - - function Is_Active - (Stream : in Audio_Stream) - return Boolean - with Pre => Stream.Is_Open; - - function Get_Info - (Stream : in Audio_Stream) - return Stream_Info'Class - with Pre => Stream.Is_Open; - - function Get_Time - (Stream : in Audio_Stream) - return Time - with Pre => Stream.Is_Open; - - function Get_CPU_Load - (Stream : in Audio_Stream) - return Load - with Pre => Stream.Is_Open; - - procedure Read_Blocking - (Stream : in Audio_Stream; - Buffer : in Sample_Buffer'Class; - Frames : in Frame_Amount) - with Pre => Stream.Is_Open and then Stream.Is_Active; - - procedure Write_Blocking - (Stream : in Audio_Stream; - Buffer : in Sample_Buffer'Class; - Frames : in Frame_Amount) - with Pre => Stream.Is_Open and then Stream.Is_Active; - - function Get_Read_Available - (Stream : in Audio_Stream) - return Frame_Amount - with Pre => Stream.Is_Open and then Stream.Is_Active; - - function Get_Write_Available - (Stream : in Audio_Stream) - return Frame_Amount - with Pre => Stream.Is_Open and then Stream.Is_Active; - private @@ -751,8 +193,6 @@ private pragma Linker_Options ("-lportaudio"); - - type C_Version_Info is record My_Major : Interfaces.C.int; My_Minor : Interfaces.C.int; @@ -773,123 +213,11 @@ private end record with Convention => C; - 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; - - - pragma Convention (C, Float_32_Array); - pragma Convention (C, Int_32_Array); - pragma Convention (C, Int_24_Array); - pragma Convention (C, Int_16_Array); - pragma Convention (C, Int_8_Array); - pragma Convention (C, UInt_8_Array); - - type Sample_Buffer is tagged record - My_Sam_Code : Interfaces.C.unsigned_long; - My_Channels : Natural; - My_Frames : Frame_Amount; - My_Array : System.Address; - end record; - - - type Stream_Parameters is record - My_Device : Interfaces.C.int; - My_Channels : Interfaces.C.int; - My_Samples : Interfaces.C.unsigned_long; - My_Latency : Interfaces.C.double; - My_Specific : System.Address; - end record with Convention => C; - - - type Stream_Flags is new Interfaces.C.unsigned_long; - - No_Flag : constant Stream_Flags - with Import => True, Convention => C, External_Name => "pa_no_flag"; - - Clip_Off_Flag : constant Stream_Flags - with Import => True, Convention => C, External_Name => "pa_clip_off"; - - Dither_Off_Flag : constant Stream_Flags - with Import => True, Convention => C, External_Name => "pa_dither_off"; - - Never_Drop_Flag : constant Stream_Flags - with Import => True, Convention => C, External_Name => "pa_never_drop_input"; - - Prime_Output_Flag : constant Stream_Flags - with Import => True, Convention => C, - External_Name => "pa_prime_output_buffers_using_stream_callback"; - - - type Audio_Stream is tagged limited record - Ptr : System.Address; - Open : Boolean := False; - Func : Callback_Function; - Chin : Interfaces.C.int := 0; - Chout : Interfaces.C.int := 0; - Sin : Interfaces.C.unsigned_long := 0; - Sout : Interfaces.C.unsigned_long := 0; - end record; - - - type C_Stream_Info is record - My_Struct_Version : Interfaces.C.int; - My_Input_Latency : Interfaces.C.double; - My_Output_Latency : Interfaces.C.double; - My_Sample_Rate : Interfaces.C.double; - end record with Convention => C; - - type Stream_Info is tagged record - Ptr : System.Address; - end record; - - - type C_Callback_Time_Info is record - My_Input_ADC : Interfaces.C.double; - My_Current : Interfaces.C.double; - My_Output_DAC : Interfaces.C.double; - end record with Convention => C; - - type Callback_Time_Info is tagged record - Ptr : System.Address; - end record; - - - type Callback_Flags is new Interfaces.C.unsigned_long; - - - - No_Device : constant Device_Index := 0; + pa_no_error : constant Interfaces.C.int; + pragma Import (C, pa_no_error, "pa_no_error"); procedure Raise_Error @@ -903,23 +231,8 @@ private (Ident : in Host_API_Kind) return Interfaces.C.int; - function To_For_Sam - (Num : in Interfaces.C.unsigned_long) - return Sample_Format; - - function To_Cnum - (Form : in Sample_Format) - return Interfaces.C.unsigned_long; - - function To_Cint - (Result : in Callback_Result) - return Interfaces.C.int; - - - -- The clunky way of ensuring that PortAudio is always shut down properly - type Final_Controller is new Ada.Finalization.Controlled with null record; overriding procedure Finalize |