X-Git-Url: https://scm.cri.minesparis.psl.eu/git/Faustine.git/blobdiff_plain/d8214dc258396483f72533504515a4e1d1b3deef..66f23d4fabf89ad09adbd4dfc15ac6b5b2b7da83:/interpretor/signal.ml diff --git a/interpretor/signal.ml b/interpretor/signal.ml deleted file mode 100644 index 2dd9f73..0000000 --- a/interpretor/signal.ml +++ /dev/null @@ -1,209 +0,0 @@ -(** - Module: Signal - Description: signal definition and operations. - @author WANG Haisheng - Created: 03/06/2013 Modified: 03/06/2013 -*) - -open Types;; -open Basic;; -open Value;; - -exception Signal_operation of string;; - -let delay_memory_length = 10000;; - -class signal : int -> (time -> value_type) -> signal_type = - fun (freq_init : int) -> - fun (func_init : time -> value_type) -> - object (self) - val mutable signal_func = func_init - val mutable memory_length = 0 - method frequency = freq_init - method at = signal_func - - method private check_freq : signal_type list -> int = - fun (sl : signal_type list) -> - let check : int -> signal_type -> int = - fun (f : int) -> - fun (s : signal_type) -> - if f = s#frequency || s#frequency = 0 then f - else if f = 0 then s#frequency - else raise (Signal_operation "frequency not matched.") in - List.fold_left check self#frequency sl - - method add_memory : int -> unit = - fun (length : int) -> - assert (length >= 0); - if memory_length >= length then () - else - let memory = Hashtbl.create length in - let func : time -> value = - fun (t : time) -> - try Hashtbl.find memory t - with Not_found -> - let result = func_init t in - let () = Hashtbl.replace memory t result in - let () = - if (t - length) >= 0 then - Hashtbl.remove memory (t - length) - else () in - result in - memory_length <- length; - signal_func <- func - - method private delay_by : int -> time -> value = - fun i -> fun t -> - if (t - i) >= 0 then - self#at (t - i) - else if t >= 0 && (t - i) < 0 then - (self#at 0)#zero - else raise (Signal_operation "Delay time < 0.") - - method private prim1 : - (time -> value_type) -> signal_type = - fun (func : time -> value_type) -> - let freq = self#frequency in - new signal freq func - - method private prim2 : - (time -> value_type -> value_type) -> signal_type -> signal_type = - fun (func_binary : time -> value_type -> value_type) -> - fun (s : signal_type) -> - let freq = self#check_freq [s] in - let func = fun t -> (func_binary t) (s#at t) in - new signal freq func - - method neg = self#prim1 (fun t -> (self#at t)#neg) - method floor = self#prim1 (fun t -> (self#at t)#floor) - method sin = self#prim1 (fun t -> (self#at t)#sin) - method cos = self#prim1 (fun t -> (self#at t)#cos) - method atan = self#prim1 (fun t -> (self#at t)#atan) - method sqrt = self#prim1 (fun t -> (self#at t)#sqrt) - method int = self#prim1 (fun t -> (self#at t)#int) - - method add = self#prim2 (fun t -> (self#at t)#add) - method sub = self#prim2 (fun t -> (self#at t)#sub) - method mul = self#prim2 (fun t -> (self#at t)#mul) - method div = self#prim2 (fun t -> (self#at t)#div) - method atan2 = self#prim2 (fun t -> (self#at t)#atan2) - method _mod = self#prim2 (fun t -> (self#at t)#_mod) - method larger = self#prim2 (fun t -> (self#at t)#larger) - method smaller = self#prim2 (fun t -> (self#at t)#smaller) - - method delay : signal_type -> signal_type = - fun (s : signal_type) -> - let freq = self#check_freq [s] in - let () = self#add_memory delay_memory_length in - let func : time -> value_type = - fun (t : time) -> - let i = (s#at t)#to_int in - self#delay_by i t in - new signal freq func - - method mem : signal_type = - let freq = self#frequency in - let () = self#add_memory 1 in - let func = fun (t : time) -> self#delay_by 1 t in - new signal freq func - - method rdtable : signal_type -> signal_type -> signal_type = - fun (s_size : signal_type) -> - fun (s_index : signal_type) -> - let freq = self#check_freq [s_index] in - let () = self#add_memory ((s_size#at 0)#to_int) in - let func : time -> value_type = fun t -> - self#at ((s_index#at t)#to_int) in - new signal freq func - - method select2 : signal_type -> signal_type -> signal_type = - fun s_first -> - fun s_second -> - let freq = self#check_freq [s_first; s_second] in - let func : time -> value_type = - fun t -> let i = (self#at t)#to_int in - if i = 0 then s_first#at t - else if i = 1 then s_second#at t - else raise (Signal_operation "select2 index 0|1.") in - new signal freq func - - method select3 : - signal_type -> signal_type -> signal_type -> signal_type = - fun s_first -> fun s_second -> fun s_third -> - let freq = self#check_freq [s_first; s_second; s_third] in - let func : time -> value_type = - fun t -> let i = (self#at t)#to_int in - if i = 0 then s_first#at t - else if i = 1 then s_second#at t - else if i = 2 then s_third#at t - else raise (Signal_operation "select2 index 0|1.") in - new signal freq func - - method prefix : signal_type -> signal_type = - fun (s_init : signal_type) -> - let () = self#add_memory 1 in - let func : time -> value_type = - fun t -> - if t = 0 then s_init#at 0 - else if t > 0 then self#at (t - 1) - else raise (Signal_operation "prefix time < 0.") in - new signal self#frequency func - - - method vectorize : signal_type -> signal_type = - fun s_size -> - let size = (s_size#at 0)#to_int in - if size <= 0 then - raise (Signal_operation "Vectorize: size <= 0.") - else - let freq = self#frequency / size in - let func : time -> value_type = - fun t -> - let vec = fun i -> (self#at (size * t + i))#get in - new value (Vec (new vector size vec)) in - new signal freq func - - - method serialize : signal_type = - let size = - match (self#at 0)#get with - | Vec vec -> vec#size - | _ -> raise (Signal_operation "Serialize: scalar input.") in - let freq = self#frequency * size in - let func : time -> value_type = - fun t -> - match (self#at (t/size))#get with - | Vec vec -> new value (vec#nth (t mod size)) - | _ -> raise (Signal_operation - "Serialize: signal type not consistent.") in - new signal freq func - - method vconcat : signal_type -> signal_type = - fun s -> - let freq = self#check_freq [s] in - let func : time -> value_type = - fun t -> - match ((self#at t)#get, (s#at t)#get) with - | (Vec vec1, Vec vec2) -> - let size1 = vec1#size in - let size2 = vec2#size in - let size = size1 + size2 in - let vec = fun i -> - if i < size1 then vec1#nth i - else vec2#nth (i - size1) in - new value (Vec (new vector size vec)) - | _ -> raise (Signal_operation "Vconcat: scalar.") in - new signal freq func - - method vpick : signal_type -> signal_type = - fun s_index -> - let freq = self#check_freq [s_index] in - let func : time -> value_type = - fun t -> - let i = (s_index#at t)#to_int in - match (self#at t)#get with - | Vec vec -> new value (vec#nth i) - | _ -> raise (Signal_operation "Vpick: scalar.") in - new signal freq func - - end;;