From f5f97e082282e44adb64c1c15e42c4611fd327c7 Mon Sep 17 00:00:00 2001
From: Ben de Roo <ben@de-roo.org>
Date: Wed, 10 Jun 2026 19:56:28 +0200
Subject: [PATCH] Update qr.py

---
 qr.py | 103 ++++++++++++++++++++++------------------------------------
 1 file changed, 39 insertions(+), 64 deletions(-)

diff --git a/qr.py b/qr.py
index d96bf32..457abb2 100644
--- a/qr.py
+++ b/qr.py
@@ -8,11 +8,8 @@ import random
 import string
 from io import BytesIO
 
-def gen_id():
-    return ''.join(random.choice(string.ascii_uppercase + string.digits) for _ in range(10))
-
 def make_qr(data, size):
-    qr = qrcode.QRCode(box_size=8, border=2)
+    qr = qrcode.QRCode(box_size=6, border=2)
     qr.add_data(data)
     qr.make(fit=True)
     img = qr.make_image(fill="black", back_color="white").convert("RGB")
@@ -22,13 +19,8 @@ def make_qr(data, size):
     buf.seek(0)
     return pygame.image.load(buf)
 
-def pack(session, seq, msg):
-    payload = {
-        "s": session,
-        "q": seq,
-        "m": base64.b64encode(msg.encode()).decode()
-    }
-    return json.dumps(payload)
+def chunk_string(s, n):
+    return [s[i:i+n] for i in range(0, len(s), n)]
 
 pygame.init()
 
@@ -38,30 +30,36 @@ w, h = screen.get_size()
 cap = cv2.VideoCapture(0)
 detector = cv2.QRCodeDetector()
 
-session_id = gen_id()
-
-seq = 0
-msg = ""
-
-qr = None
-
-last_decode = []
-stable = ""
-last_seq = -1
-
 qr_size = h // 2
 
+clock = pygame.time.Clock()
+
+# STREAM STATE (geen chat, geen protocol)
+counter = 0
+rx_buffer = ""
+
+tx_qr = None
+last_frame = 0
+
 running = True
 while running:
     for e in pygame.event.get():
-        if e.type == pygame.KEYDOWN:
-            if e.key == pygame.K_ESCAPE:
-                running = False
+        if e.type == pygame.KEYDOWN and e.key == pygame.K_ESCAPE:
+            running = False
 
-            if e.key == pygame.K_RETURN:
-                msg = input("msg: ")
-                seq += 1
+    # ===== TRANSMIT STREAM =====
+    now = time.time()
+    if now - last_frame > 0.5:  # stream rate
+        last_frame = now
 
+        payload = {
+            "d": str(counter)
+        }
+        counter += 1
+
+        tx_qr = make_qr(json.dumps(payload), qr_size)
+
+    # ===== RECEIVE STREAM =====
     ret, frame = cap.read()
 
     if ret:
@@ -70,52 +68,29 @@ while running:
         if data:
             try:
                 obj = json.loads(data)
-
-                if obj.get("s"):
-
-                    if obj["s"] != session_id:
-                        pass
-                    else:
-                        text = base64.b64decode(obj["m"]).decode()
-
-                        last_decode.append((obj["q"], text))
-                        if len(last_decode) > 5:
-                            last_decode.pop(0)
-
-                        # stabiliteit check
-                        counts = {}
-                        for _, t in last_decode:
-                            counts[t] = counts.get(t, 0) + 1
-
-                        for t, c in counts.items():
-                            if c >= 3:
-                                stable = t
-
+                if "d" in obj:
+                    rx_buffer = (rx_buffer + obj["d"])[-200:]
             except:
                 pass
 
-    if msg:
-        qr = make_qr(pack(session_id, seq, msg), qr_size)
-
+    # ===== RENDER =====
     screen.fill((0,0,0))
 
-    if qr:
-        screen.blit(qr, (w//4 - qr_size//2, h//4))
+    if tx_qr:
+        screen.blit(tx_qr, (w//4 - qr_size//2, h//4))
 
-    font = pygame.font.SysFont(None, 36)
+    if ret:
+        cam = cv2.cvtColor(cv2.flip(frame,1), cv2.COLOR_BGR2RGB)
+        cam = pygame.surfarray.make_surface(cam.swapaxes(0,1))
+        screen.blit(pygame.transform.scale(cam, (w//2, h)), (w//2,0))
 
-    screen.blit(font.render("SESSION: " + session_id[:6], True, (0,255,0)), (20,20))
-    screen.blit(font.render("SENT: " + msg[:30], True, (255,255,0)), (20,80))
-    screen.blit(font.render("RECV: " + stable[:30], True, (0,255,0)), (w//2+20,20))
+    font = pygame.font.SysFont(None, 40)
 
-    cam_surface = pygame.surfarray.make_surface(
-        cv2.cvtColor(cv2.flip(frame,1), cv2.COLOR_BGR2RGB).swapaxes(0,1)
-    )
-
-    screen.blit(pygame.transform.scale(cam_surface, (w//2, h)), (w//2,0))
+    screen.blit(font.render("STREAM OUT: " + str(counter), True, (255,255,0)), (20,20))
+    screen.blit(font.render("STREAM IN BUFFER: " + rx_buffer[-30:], True, (0,255,0)), (20,80))
 
     pygame.display.flip()
-    pygame.time.Clock().tick(30)
+    clock.tick(30)
 
 cap.release()
 pygame.quit()
\ No newline at end of file