Changeset d2f9280 in ammosreader

Timestamp:

07/04/22 11:14:06 (3 years ago)

Author:

Enrico Schwass <ennoausberlin@…>

Branches:

AmmosSource, guix

Children:

0033a40

Parents:

09b290d

Message:

use bitstring to allow offsets other then modulo 8

Files:

• requirements.txt (added)
• sample_scripts/ammos_viewer.py (modified) (2 diffs)

sample_scripts/ammos_viewer.py

@@ -4 +4 @@
 from PIL import Image, ImageTk
 from random import randbytes
+import bitstring
 
 from ammosreader.AmmosAudioReader import AmmosAudioReader
+
 
 class MainApplication(tk.Frame):
@@ -74 +76 @@
 
     def current_bytes(self):
-        return b"".join([self.bytes[each: each+self.canvas_size[0]] for each in range(self.offset.get(),
-                                                                                      len(self.bytes),
-                                                                                      self.cycle.get())])
+        if self.offset.get() % 8 == 0:
+            return b"".join([self.bytes[each: each+self.canvas_size[0]] for each in range(self.offset.get(),
+                                                                                          len(self.bytes),
+                                                                                          self.cycle.get())])
+        bits = bitstring.BitArray(self.bytes)
+        return (bits << self.offset.get()).tobytes()
+
     def update_canvas(self):
         self.image = ImageTk.PhotoImage(Image.frombytes("L", self.canvas_size, self.current_bytes()))