Add OSC utilities

2 files changed, 94 insertions, 1 deletions

diff --git a/guile/starlet/open-sound-control/utils.scm b/guile/starlet/open-sound-control/utils.scm
new file mode 100644
index 0000000..bb9c310
--- /dev/null
+++ b/guile/starlet/open-sound-control/utils.scm
@@ -0,0 +1,87 @@
+;;
+;; starlet/open-sound-control/utils.scm
+;;
+;; Copyright © 2020-2023 Thomas White <taw@bitwiz.org.uk>
+;;
+;; This file is part of Starlet.
+;;
+;; Starlet is free software: you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; This program is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;; GNU General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with this program.  If not, see <http://www.gnu.org/licenses/>.
+;;
+(define-module (starlet open-sound-control utils)
+  #:use-module (starlet playback)
+  #:use-module (starlet state)
+  #:use-module (starlet utils)
+  #:use-module (open-sound-control client)
+  #:use-module (open-sound-control server-thread)
+  #:export (osc-playback-indicators
+            osc-playback-controls
+            osc-select-button))
+
+
+(define* (osc-playback-controls pb server go-method stop-method back-method
+                                #:key (min-time-between-presses 0.2))
+
+  (let ((time-last-press 0))
+    (add-osc-method server go-method ""
+                    (lambda ()
+                      (let ((time-this-press (hirestime)))
+                        (if (> time-this-press (+ time-last-press min-time-between-presses))
+                          (go! pb)
+                          (display "Too soon after last press!\n"))
+                        (set! time-last-press time-this-press)))))
+
+  (add-osc-method server stop-method "" (lambda () (stop! pb)))
+  (add-osc-method server back-method "" (lambda () (back! pb))))
+
+
+(define (osc-playback-indicators pb addr go-led stop-led back-led)
+
+  (add-and-run-hook!
+    (state-change-hook pb)
+    (lambda (new-state)
+
+      (if (eq? new-state 'running)
+        (osc-send addr stop-led 'green)
+        (osc-send addr stop-led 'off))
+
+      (cond
+        ((eq? new-state 'pause)
+         (osc-send addr go-led 'orange))
+        ((eq? new-state 'ready)
+         (osc-send addr go-led 'green))
+        ((eq? new-state 'running)
+         (osc-send addr go-led 'green))
+        (else
+          (osc-send addr go-led 'off))))
+
+    (playback-state pb))
+
+  (osc-send addr back-led 'green))
+
+
+(define (osc-select-button server button-method addr led fix)
+
+  (add-osc-method server button-method ""
+                  (lambda ()
+                    (if (selected? fix)
+                      (desel fix)
+                      (sel fix))))
+
+  (add-and-run-hook!
+    selection-hook
+    (lambda (sel)
+      (if (selected? fix)
+        (osc-send addr led 'orange)
+        (osc-send addr led 'red)))
+    (get-selection)))
diff --git a/guile/starlet/utils.scm b/guile/starlet/utils.scm
index e38e6b7..e1b92a8 100644
--- a/guile/starlet/utils.scm
+++ b/guile/starlet/utils.scm
@@ -40,7 +40,8 @@
             percent->dmxval16
             comment
             hash-table-empty?
-            lookup))
+            lookup
+            add-and-run-hook!))
 
 
 (define (print-hash-table ht)
@@ -173,3 +174,8 @@
      (cadr (car dictionary)))
     (else
       (lookup key (cdr dictionary)))))
+
+
+(define (add-and-run-hook! hook proc . initial-args)
+  (add-hook! hook proc)
+  (apply proc initial-args))