atroscine

darcs-hash:20050811090231-2648a-b62b40c5f0df7e8f5231240a1d3698146582da42.gz

README.txt

@@ -22,7 +22,7 @@ or via asdf-install.. .
 
 limitations
   - doesnt send nested bundles or timetags later than 'now' 
-  - will most likely crash if the input is malformed
+  - will raise an exception if the input is malformed
   - doesnt do any pattern matching on addresses
   - sbcl/cmucl specific float en/decoding 
   - only supports the type(tag)s specified in the OSC spec
@@ -34,11 +34,11 @@ things to do
   - portable en/decoding of floats -=> ieee754 tests
   - doubles and other defacto typetags
   - correct en/decoding of timetags
-  - asdf-installable
 
 
 changes
-
+  2005-03-16
+     - packaged as an asdf installable lump
   2005-03-11
      - bundle and blob en/de- coding
   2005-03-05

osc-examples.lisp

@@ -13,8 +13,10 @@
 ;;
 ;; Commentry
 ;;
-;;  These examples are currently sbcl specific (ports welcome!)
-;;  but should still be able to explain enough to get started. .. 
+;;  These examples are currently sbcl specific [as is the float code],
+;;  but should be easily modifyable to work with trivial-sockets, or
+;;  something similar for portablity. these examples should still be
+;;  able to explain enough to get you started. ..
 ;;
 ;;  eg. listen on port 6667 for incoming msgs 
 ;;
@@ -62,7 +64,7 @@
 		(socket-receive in buffer nil)
 		(let ((oscuff (osc:decode-bundle buffer)))
 		  (format t "glonked -=> message with ~S~% arg(s)" (length oscuff))
-		  (write-stream-t1 oscuff stream)))
+		  (write-stream-t1 stream oscuff)))
 	(when in (socket-close in)) 
  	(when out (socket-close out)))))) 
 
@@ -70,7 +72,7 @@
 (defun make-udp-socket()
   (make-instance 'inet-socket :type :datagram :protocol :udp))
 
-(defun write-stream-t1 (osc-message stream) 
+(defun write-stream-t1 (stream osc-message) 
   "writes a given message to a stream. keep in mind that when using a buffered 
    stream any funtion writing to the stream should  call (finish-output stream)
    after it sends the mesages,. ."

osc.asd

@@ -7,5 +7,5 @@
     :author "nik gaffney <nik@fo.am>"
     :licence "LLGPL"
     :description "The Open Sound Control protocol, aka OSC"
-    :components ((:file "osc"))
-)
+    :version "0.1"
+    :components ((:file "osc")))

osc.lisp

@@ -28,8 +28,9 @@
 ;;                     http://www.cnmat.berkeley.edu/OpenSoundControl/
 ;; 
 ;;   - doesnt send nested bundles or timetags later than 'now' 
-;;   - will most likely crash if the input is malformed
+;;   - malformed input -> exception
 ;;   - int32 en/de-coding based on code (c) Walter C. Pelissero
+;;   - unknown types are sent as 'blobs' which may or may not be an issue
 ;;
 ;;  see the README file for more details...
 ;;
@@ -90,7 +91,8 @@
    i => #(105) => int32
    f => #(102) => float
    s => #(115) => string 
-   b => #(98)  => blob" 
+   b => #(98)  => blob
+  and considers non int/float/string data to be a blob." 
 
   (let ((lump (make-array 0 :adjustable t 
 			  :fill-pointer t 
@@ -104,10 +106,9 @@
           (integer (write-to-vector #\i))
           (float (write-to-vector #\f))
           (simple-string (write-to-vector #\s))
-	  (simple-vector (write-to-vector #\b))
-          (t (error "can only encode ints, floats or strings"))))
+	  (t (write-to-vector #\b)))))
       (cat lump
-           (pad (padding-length (length lump)))))))     
+           (pad (padding-length (length lump))))))     
 		  
 (defun encode-data (data)
   "encodes data in a format suitable for an OSC message"
@@ -119,8 +120,7 @@
           (integer (enc encode-int32)) 
           (float (enc encode-float32)) 
           (simple-string (enc encode-string))
-	  (simple-vector (enc encode-blob))
-          (t (error "wrong type. turn back"))))
+	  (t (enc encode-blob))))
       lump)))
 
 
@@ -197,11 +197,11 @@
 			 result)
 		   (setf acc (subseq acc pointer))))
 		((eq x (char-code #\b)) 
-		 (let ((size (decode-int32 (subseq acc 0 4))))
-		   (let ((end (padded-length (+ 4 size))))
-		     (push (decode-blob (subseq acc 0 end)) 
-			   result)
-		     (setf acc (subseq acc end)))))
+		 (let* ((size (decode-int32 (subseq acc 0 4)))
+                        (end (padded-length (+ 4 size))))
+                   (push (decode-blob (subseq acc 0 end)) 
+                         result)
+                   (setf acc (subseq acc end))))
 		(t  (error "unrecognised typetag"))))
 	   tags)
       (nreverse result))))
@@ -323,7 +323,7 @@
   (+ s (- 4 (mod s 4))))
 
 (defun string-padding (string)
-  "returns the padding required for a given osc string"
+q  "returns the padding required for a given osc string"
   (declare (type simple-string string)) 
   (pad (- 4 (mod (length string) 4))))