Bad apple??

badapple-tape.py

@@ -0,0 +1,28 @@
+#!/usr/bin/env python3
+# x-run: python3 % badapple.bin ~/videos/badapple/frame*.png
+
+from sys import argv
+from PIL import Image
+
+w, h = 82, 40
+
+bits = [[1,2],[4,8],[16,0]]
+
+with open(argv[1], "wb") as fp:
+    fp.write(bytes([w, h]))
+    for i, f in enumerate(argv[2:]):
+        with Image.open(f) as im:
+            img = im.resize((w * 2, h * 3)).convert("1")
+            for y in range(h):
+                line = bytearray()
+                for x in range(w):
+                    val = 0
+                    for oy, l in enumerate(bits):
+                        for ox, bi in enumerate(l):
+                            if img.getpixel((x * 2 + ox, y * 3 + oy)):
+                                val |= bi
+                    if img.getpixel((x * 2 + 1, y * 3 + 2)):
+                        val ^= 0x9f
+                    line.append(val)
+                fp.write(line)
+        print(f"wrote {i + 1} / {len(argv) - 2}")

videotape.lua

@@ -0,0 +1,23 @@
+local tape = peripheral.find("tape_drive")
+local mon = peripheral.find("monitor")
+
+tape.seek(0)
+mon.setTextScale(1)
+
+local w, h = string.byte(tape.read(2), 1, 2)
+
+repeat
+    for y = 1, h do
+        mon.setCursorPos(1, y)
+        local buf = string.byte(tape.read(w), 1, -1)
+        local s, f, b = "", "", ""
+        for x = 1, w do
+            s = s .. string.char(bit32.band(0x7F, buf[x]))
+            local inv = bit32.band(0x80, buf[x])
+            f = f .. (inv and "f" or "0")
+            b = b .. (inv and "0" or "f")
+        end
+        mon.blit(s, f, b)
+    end
+    os.sleep(0.01)
+until tape.isEnd()