event driven system

scripts/decoder_test.py

@@ -0,0 +1,91 @@
+"""
+Test decoder frame rate in isolation without any processing.
+"""
+
+import time
+import os
+from dotenv import load_dotenv
+
+import sys
+sys.path.append(os.path.abspath(os.path.join(os.path.dirname(__file__), '..')))
+
+from services.stream_decoder import StreamDecoderFactory
+
+load_dotenv()
+
+def main():
+    GPU_ID = 0
+    STREAM_URL = os.getenv('CAMERA_URL_1', 'rtsp://localhost:8554/test')
+    MAX_FRAMES = 100
+
+    print("=" * 80)
+    print("Decoder Frame Rate Test (No Processing)")
+    print("=" * 80)
+    print(f"\nStream: {STREAM_URL}")
+    print(f"Monitoring for {MAX_FRAMES} frames...\n")
+
+    # Create decoder
+    factory = StreamDecoderFactory(gpu_id=GPU_ID)
+    decoder = factory.create_decoder(STREAM_URL, buffer_size=30)
+
+    # Start decoder
+    decoder.start()
+
+    # Wait for connection
+    print("Waiting for connection...")
+    max_wait = 10
+    waited = 0
+    while not decoder.is_connected() and waited < max_wait:
+        time.sleep(0.5)
+        waited += 0.5
+
+    if not decoder.is_connected():
+        print(f"Failed to connect after {max_wait}s!")
+        decoder.stop()
+        return
+
+    print(f"✓ Connected\n")
+    print("Monitoring frame arrivals...")
+    print("-" * 60)
+
+    last_count = 0
+    frame_times = []
+    start_time = time.time()
+    last_frame_time = start_time
+
+    while decoder.get_frame_count() < MAX_FRAMES:
+        current_count = decoder.get_frame_count()
+
+        if current_count > last_count:
+            current_time = time.time()
+            interval = (current_time - last_frame_time) * 1000
+
+            frame_times.append(interval)
+            print(f"Frame {current_count:3d}: interval={interval:6.1f}ms")
+
+            last_count = current_count
+            last_frame_time = current_time
+
+        time.sleep(0.001)  # 1ms poll
+
+    # Stop decoder
+    decoder.stop()
+
+    # Analysis
+    elapsed = time.time() - start_time
+    actual_fps = MAX_FRAMES / elapsed
+
+    print("\n" + "=" * 80)
+    print("DECODER PERFORMANCE")
+    print("=" * 80)
+    print(f"\nFrames received: {MAX_FRAMES}")
+    print(f"Time: {elapsed:.1f}s")
+    print(f"Actual FPS: {actual_fps:.2f}")
+    print(f"\nFrame Intervals:")
+    print(f"  Min: {min(frame_times[1:]):.1f}ms")  # Skip first
+    print(f"  Max: {max(frame_times[1:]):.1f}ms")
+    print(f"  Avg: {sum(frame_times[1:])/len(frame_times[1:]):.1f}ms")
+    print(f"  Expected (6 FPS): 166.7ms")
+
+if __name__ == "__main__":
+    main()