XOR frames with arange, implement color to 8-bit in decoder, add camera device index flag

1 files changed, 15 insertions, 8 deletions

diff --git a/decoder.py b/decoder.py
index 357db39..e58e246 100644
--- a/decoder.py
+++ b/decoder.py
@@ -11,30 +11,37 @@ parser.add_argument("--height", help="grid height", default=100, type=int)
 parser.add_argument("--width", help="grid width", default=100, type=int)
 parser.add_argument("--fps", help="framerate", default=30, type=int)
 parser.add_argument("--level", help="error correction level", default=0.1, type=float)
+parser.add_argument("--device", help="camera device index", default=1, type=int)
 args = parser.parse_args()
 
 cheight = args.height // 10
 cwidth = args.width // 10
 frame_size = args.height * args.width - 4 * cheight * cwidth
+frame_xor = np.arange(frame_size, dtype=np.uint8)
 rs_size = int(frame_size * (1 - args.level))
 
 rsc = RSCodec(frame_size - rs_size)
-raptor_decoder = Decoder.with_defaults(args.size, rs_size)
+raptor_decoder = Decoder.with_defaults(args.len, rs_size)
 data = None
-cap = cv2.VideoCapture(0)
+cap = cv2.VideoCapture(args.device)
 while data is None:
-    ret, frame = cap.read()
+    ret, raw_frame = cap.read()
     if not ret:
         continue
-    frame_full = decode(frame)  # TODO
+    color_frame = decode(raw_frame)  # TODO
+    frame = (
+        (color_frame[:, :, 0] >> 5 & 0b00000111)
+        + (color_frame[:, :, 1] >> 2 & 0b00111000)
+        + (color_frame[:, :, 2] & 0b11000000)
+    )
     frame_data = np.concatenate(
         (
-            frame_full[:cheight, cwidth : args.width - cwidth].flatten(),
-            frame_full[cheight : args.height - cheight].flatten(),
-            frame_full[args.heigth - cheight, cwidth : args.width - cwidth].flatten(),
+            frame[:cheight, cwidth : args.width - cwidth].flatten(),
+            frame[cheight : args.height - cheight].flatten(),
+            frame[args.heigth - cheight, cwidth : args.width - cwidth].flatten(),
         )
     )
-    data = raptor_decoder.decode(rsc.decode(frame_data))
+    data = raptor_decoder.decode(rsc.decode(frame_data ^ frame_xor))
 with open(args.file, "wb") as f:
     f.write(data)
 cap.release()