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boomerang-serial.lisp
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(in-package :boomerang)
(defun write-bytes (bytes stream)
(dolist (byte bytes)
(write-midi-byte byte stream)))
(defvar *rang-output-stream* nil)
(defvar *rang-input-stream* nil)
(defun send-brosync-cmd (byte)
(write-bytes `(240 0 31 127 15 ,byte)
*rang-output-stream*))
(eval-when (:compile-toplevel :load-toplevel)
(defconstant +brosync-sync-message+ 19)
(defparameter +brosync-toggle-message+ 18)
(defparameter +brosync-play-stop-all-message+ 8)
(defparameter +brosync-cancel-rec-message+ 3)
(defconstant +sysex-begin+ #xF0))
(defun send-brosync-sync ()
(send-brosync-cmd +brosync-sync-message+))
(defun send-brosync-toggle ()
(send-brosync-cmd +brosync-toggle-message+))
(defun send-brosync-play-stop-all()
(send-brosync-cmd +brosync-play-stop-all-message+))
(defun send-brosync-cancel-rec-master ()
(send-brosync-cmd +brosync-cancel-rec-message+))
(defvar *brosync-state* :empty)
(defvar *brosync-loop-origin* 0)
(defvar *brosync-loop-duration* 0)
(defun brosync-handle-message (byte recv-time)
(case *brosync-state*
(:empty (brosync-empty-handle-message byte recv-time))
(:stopped-master (brosync-stopped-master-handle-message byte recv-time))
(:rec-master (brosync-rec-master-handle-message byte recv-time))
(:play-master (brosync-play-master-handle-message byte recv-time))
(:stopped-slave (brosync-stopped-slave-handle-message byte recv-time))
(:rec-slave (brosync-rec-slave-handle-message byte recv-time))
(:play-slave (brosync-play-slave-handle-message byte recv-time)))
(format t "~%after recving byte ~A, brosync state is: ~A" byte *brosync-state*))
(defun brosync-empty-handle-message (message recv-time)
(case message
(#.+brosync-toggle-message+ (setf *brosync-state* :rec-slave)
(setf *brosync-loop-origin*
recv-time))
(#.+brosync-cancel-rec-message+ nil)
(#.+brosync-play-stop-all-message+ nil)
(#.+brosync-sync-message+)))
(defun brosync-stopped-master-handle-message (message recv-time)
(declare (ignore recv-time))
(case message
(#.+brosync-cancel-rec-message+)
(#.+brosync-play-stop-all-message+)
(#.+brosync-toggle-message+)
(#.+brosync-sync-message+)))
(defun brosync-rec-master-handle-message (message recv-time)
(declare (ignore recv-time))
(case message
(#.+brosync-cancel-rec-message+)
(#.+brosync-play-stop-all-message+)
(#.+brosync-toggle-message+)
(#.+brosync-sync-message+)))
(defun brosync-play-master-handle-message (message recv-time)
(declare (ignore recv-time))
(case message
(#.+brosync-cancel-rec-message+)
(#.+brosync-play-stop-all-message+)
(#.+brosync-toggle-message+)
(#.+brosync-sync-message+)))
(defvar *ticker-thread* nil)
(defun stop-ticker ()
(ignore-errors (bt:destroy-thread *ticker-thread*)))
(defparameter *clock-subdivision* 48)
(defun usleep (usecs)
(when (> usecs 0)
(sleep (/ usecs 1000000))))
(defun boomerang-tick-func ()
;; (serial-trigger-param 0 1)
(calispel:! serial-hub-utils:*reader-ochan*
(make-instance 'cl-rtmidi:clock-tick-midi-message
:raw-midi '(248)))
;; (print 'tick)
)
(defparameter *boomerang-taptempo-chan* (make-nonblock-buf-channel))
(defparameter *last-tap* (get-internal-utime))
(defparameter *max-tap-time* 1500000)
(defun start-ticker (loop-origin loop-duration)
(stop-ticker)
(setf *ticker-thread*
(bt:make-thread
(lambda ()
(loop
(incf loop-origin loop-duration)
(let ((div *clock-subdivision*))
(loop for i below div
do
(multiple-value-bind (value success?)
(calispel:? *boomerang-taptempo-chan* 0)
(when success?
(let ((tap-intvl (- (get-internal-utime)
*last-tap*)))
(when (< tap-intvl *max-tap-time*)
(setf *clock-subdivision*
(* 24
(round (/ *brosync-loop-duration*
(- value *last-tap*)))))))
(setf *last-tap* (get-internal-utime))))
(boomerang-tick-func)
(usleep (/ (- loop-origin
(get-internal-utime))
(- div i))))))))))
(defun brosync-stopped-slave-handle-message (message recv-time)
(case message
(#.+brosync-cancel-rec-message+)
(#.+brosync-play-stop-all-message+)
(#.+brosync-toggle-message+ (setf *brosync-state* :rec-slave)
(setf *brosync-loop-origin*
recv-time))
(#.+brosync-sync-message+ (start-ticker recv-time
*brosync-loop-duration*)
(setf *brosync-state* :play-slave))))
(defun brosync-rec-slave-handle-message (message recv-time)
(case message
(#.+brosync-cancel-rec-message+ (setf *brosync-state* :empty))
(#.+brosync-play-stop-all-message+)
(#.+brosync-toggle-message+ (setf *brosync-state* :play-slave)
(setf *brosync-loop-duration*
(- recv-time
*brosync-loop-origin*))
(start-ticker (+ *brosync-loop-origin*
*brosync-loop-duration*)
*brosync-loop-duration*))
(#.+brosync-sync-message+ (setf *brosync-state* :play-slave)
(start-ticker *brosync-loop-origin*
*brosync-loop-duration*))))
(defun brosync-play-slave-handle-message (message recv-time)
(declare (ignore recv-time))
(case message
(#.+brosync-cancel-rec-message+)
(#.+brosync-play-stop-all-message+ (setf *brosync-state* :stopped-slave)
(stop-ticker))
(#.+brosync-toggle-message+ (setf *brosync-state* :stopped-slave)
(stop-ticker))
(#.+brosync-sync-message+)))
(defun brosync-listener ()
(with-midi-uart-in (*rang-input-stream* "/dev/ttyS2")
(let ((*brosync-state* :empty)
(state :open)
(sysex-counter 0)
(packet nil)
(recv-time (get-internal-utime)))
(loop
(let ((new-byte (read-midi-byte *rang-input-stream*)))
(case state
(:open (case new-byte
(#.+sysex-begin+ (setf state :sysex)
(setf sysex-counter 5)
(push new-byte packet)
(setf recv-time (get-internal-utime)))))
(:sysex (decf sysex-counter)
(push new-byte packet)
(when (= sysex-counter 0)
(progn (brosync-handle-message new-byte recv-time)
(setf packet nil)
(setf state :open))))))))))
(defun start-brosync-sync ()
(bt:make-thread #'brosync-listener :name "brosync-sync"))