Add Encoder class

1 files changed, 41 insertions, 0 deletions

diff --git a/tascam_fw_console/encoder.py b/tascam_fw_console/encoder.py
new file mode 100644
index 0000000..211fef1
--- /dev/null
+++ b/tascam_fw_console/encoder.py
@@ -0,0 +1,41 @@
+#!/usr/bin/env python3
+"""
+    Open Sound Control send/recieve daemon for Tascam Firewire control surface
+    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+    :copyright: Copyright (c) 2018 Scott Bahling
+        This program is free software; you can redistribute it and/or modify
+        it under the terms of the GNU General Public License version 2 as
+        published by the Free Software Foundation.
+
+        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 (see the file COPYING); if not, write to the
+        Free Software Foundation, Inc.,
+        51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
+    :license: GPL-2.0, see COPYING for details
+"""
+
+
+class Encoder():
+    def __init__(self):
+        self.name = 'Unknown'
+        self.update_callbacks = set()
+
+    def update(self, delta):
+        print('Encoder: ', self.name, delta)
+        for callback in self.update_callbacks:
+            try:
+                callback(delta)
+            except Exception('Encoder update callback failed') as e:
+                raise(e)
+
+    def add_callback(self, callback):
+        self.update_callbacks.add(callback)
+
+    def remove_callback(self, callback):
+        self.update_callbacks.remove(callback)