138 lines
4.6 KiB
Python
138 lines
4.6 KiB
Python
#!/usr/bin/env python3
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# /// script
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# requires-python = "<=3.10"
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# dependencies = [
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# "opencv-python",
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# "numpy",
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# ]
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# ///
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#
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# NOTE: For higher performance (200+ fps), see the Go implementation:
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# scripts/go/main.go - Significantly faster, handles 200+ fps easily
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# Build: Run scripts/build_go_receiver.ps1 (Windows) or scripts/build_go_receiver.sh (Linux/macOS)
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# See scripts/go/README.md for setup instructions
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import socket
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import numpy as np
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import cv2
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import time
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from collections import deque
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# Debug flag - set to True to see frame reception details
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DEBUG = False
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# Line drop detection parameters
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EXPECTED_FPS = 200 # Expected frame rate (from 200fps ini file)
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EXPECTED_INTERVAL_MS = 1000.0 / EXPECTED_FPS # 5ms for 200fps
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DROP_THRESHOLD_MS = EXPECTED_INTERVAL_MS * 2.5 # Alert if gap > 2.5x expected (12.5ms)
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STATS_WINDOW_SIZE = 100 # Track stats over last N frames
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STATUS_INTERVAL = 100 # Print status every N frames
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# Rotation mode - set to rotate incoming data before display
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# Options: None, cv2.ROTATE_90_CLOCKWISE, cv2.ROTATE_90_COUNTERCLOCKWISE, cv2.ROTATE_180
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ROTATION = cv2.ROTATE_90_COUNTERCLOCKWISE # Rotate rows to columns
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# Stream parameters (match your GStreamer sender)
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COLUMN_WIDTH = 4 # Width from 200fps-2456x4pix-cw.ini
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COLUMN_HEIGHT = 2456 # Height from 200fps-2456x4pix-cw.ini
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CHANNELS = 3
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FRAME_SIZE = COLUMN_WIDTH * COLUMN_HEIGHT * CHANNELS # bytes (29472)
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# Display parameters
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DISPLAY_WIDTH = 800 # Width of rolling display in pixels
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DISPLAY_HEIGHT = COLUMN_HEIGHT
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UDP_IP = "0.0.0.0"
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UDP_PORT = 5000
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sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
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sock.setsockopt(socket.SOL_SOCKET, socket.SO_RCVBUF, 16777216) # 16MB buffer
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sock.bind((UDP_IP, UDP_PORT))
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print(f"Receiving raw {COLUMN_WIDTH}x{COLUMN_HEIGHT} RGB columns on UDP port {UDP_PORT}")
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print(f"Display width: {DISPLAY_WIDTH} pixels (rolling)")
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if DEBUG:
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print(f"Expected frame size: {FRAME_SIZE} bytes")
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cv2.namedWindow("Rolling Column Stream", cv2.WINDOW_NORMAL)
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# Initialize the rolling buffer
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rolling_buffer = np.zeros((DISPLAY_HEIGHT, DISPLAY_WIDTH, CHANNELS), dtype=np.uint8)
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current_column = 0
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frame_count = 0
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# Line drop detection state
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last_frame_time = None
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first_frame_time = None
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frame_intervals = deque(maxlen=STATS_WINDOW_SIZE)
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total_drops = 0
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drops_since_last_status = 0
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while True:
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current_time = time.time()
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data, addr = sock.recvfrom(65536)
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if len(data) != FRAME_SIZE:
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if DEBUG:
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print(f"Received {len(data)} bytes (expected {FRAME_SIZE}), skipping...")
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continue
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# Initialize timing on first frame
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if first_frame_time is None:
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first_frame_time = current_time
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# Line drop detection
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if last_frame_time is not None:
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interval_ms = (current_time - last_frame_time) * 1000
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frame_intervals.append(interval_ms)
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# Detect line drop
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if interval_ms > DROP_THRESHOLD_MS:
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total_drops += 1
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drops_since_last_status += 1
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last_frame_time = current_time
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frame_count += 1
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# Print status every STATUS_INTERVAL frames
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if frame_count % STATUS_INTERVAL == 0:
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elapsed_time = current_time - first_frame_time
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real_fps = frame_count / elapsed_time if elapsed_time > 0 else 0
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avg_interval = np.mean(frame_intervals) if len(frame_intervals) > 0 else 0
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instant_fps = 1000.0 / avg_interval if avg_interval > 0 else 0
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status = f"Frame {frame_count}: Real FPS: {real_fps:.1f} | Instant: {instant_fps:.1f}"
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if drops_since_last_status > 0:
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status += f" | ⚠️ {drops_since_last_status} drops detected"
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drops_since_last_status = 0
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else:
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status += f" | Total drops: {total_drops}"
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print(status)
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# Parse the incoming data
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frame = np.frombuffer(data, dtype=np.uint8).reshape((COLUMN_WIDTH, COLUMN_HEIGHT, CHANNELS))
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# Apply rotation if configured
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if ROTATION is not None:
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rotated = cv2.rotate(frame, ROTATION)
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else:
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rotated = frame
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# Extract only the first column for smoother rolling (1 pixel/frame)
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column = rotated[:, 0:1, :]
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# Insert the single column into the rolling buffer at the current position
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rolling_buffer[:, current_column:current_column+1, :] = column
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# Move to the next column position, wrapping around when reaching the end
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current_column = (current_column + 1) % DISPLAY_WIDTH
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# Display the rolling buffer (clean, no overlays)
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cv2.imshow("Rolling Column Stream", rolling_buffer)
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if cv2.waitKey(1) == 27: # ESC to quit
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break
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cv2.destroyAllWindows() |