X-Git-Url: https://svn.cri.ensmp.fr/git/Faustine.git/blobdiff_plain/4d5f39ea1ae1eff1d8eadf7875851be467e40a47..f59ac471aa5a080301d70e7d7e1e81f34151ba2f:/interpretor/beam.ml

diff --git a/interpretor/beam.ml b/interpretor/beam.ml
index a4f22b8..ffe8128 100644
--- a/interpretor/beam.ml
+++ b/interpretor/beam.ml
@@ -25,6 +25,10 @@ class beam : signal_type array -> beam_type =
 	  fun len ->
 	    new beam (Array.sub self#get start len)
 
+      method cut : int -> beam_type * beam_type =
+	fun (cut_width : int)->
+	  ((self#sub 0 cut_width),(self#sub cut_width (self#width - cut_width))) 
+
       method append : beam_type -> beam_type =
 	fun (b : beam_type) -> 
 	  new beam (Array.append self#get b#get)
@@ -66,34 +70,45 @@ class beam : signal_type array -> beam_type =
 	  let signal_at = fun (t : time) -> fun (s : signal_type) -> s#at t in
 	  Array.map (signal_at t) self#get
 
-      method output : int -> value_type array array = 
+      method output : int -> float array array array = 
 	  fun (length_max : int) ->
 	    let transpose : 'a array array -> 'a array array = 
 	      fun matrix ->
 		let get_element = fun i -> fun array -> array.(i) in
 		let get_column = fun m -> fun i -> Array.map (get_element i) m in
 		Array.init self#width (get_column matrix) in
-            let value_init = new value Error in
+	    let value2float = fun (v : value_type) -> v#to_float_array in
+            let init = [|0.|] in
 	    let container = Array.make length_max 
-		(Array.make self#width value_init) in
+		(Array.make self#width init) in
 	    let index = ref 0 in
 
 	    try
 	      while !index < length_max do
-		container.(!index) <- self#at !index;
+		container.(!index) <- Array.map value2float (self#at !index);
 		incr index;
 	      done;
 	      transpose container
-	    with x ->
 
+	    with x ->
 	      let error_message = 
 		match x with
 		| Convert_Error s -> "Convert_Error: " ^ s
 		| Basic_operation s -> "Basic_operation: " ^ s
 		| Signal_operation s -> "Signal_operation: " ^ s
 		| Beam_matching s -> "Beam_Matching_Error: " ^ s
-		| _ -> "Compute finished."
+		| Invalid_argument s -> "Compute finished."
 	      in
 	      let () = print_string error_message in
 	      transpose (Array.sub container 0 !index)
+
+      method frequency : int array = 
+	let each_rate : signal -> int = 
+	  fun (s : signal) -> 
+	    let rate = s#frequency in
+	    if rate > 0 then rate
+	    else if rate = 0 then 44100
+	    else raise (Beam_matching "frequency error.") in	
+	Array.map each_rate self#get 
+
     end