Refactor: done phase 3
This commit is contained in:
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6 changed files with 967 additions and 21 deletions
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@ -201,31 +201,42 @@ core/
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- ✅ **Model Caching**: Shared model cache across instances to optimize memory usage
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- ✅ **Model Caching**: Shared model cache across instances to optimize memory usage
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- ✅ **Dependency Resolution**: Automatically identifies and tracks all model file dependencies
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- ✅ **Dependency Resolution**: Automatically identifies and tracks all model file dependencies
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## 📋 Phase 3: Streaming System
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## ✅ Phase 3: Streaming System - COMPLETED
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### 3.1 Streaming Module (`core/streaming/`)
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### 3.1 Streaming Module (`core/streaming/`)
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- [ ] **Create `readers.py`** - RTSP/HTTP frame readers
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- ✅ **Create `readers.py`** - RTSP/HTTP frame readers
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- [ ] Extract `frame_reader` function from `app.py`
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- ✅ Extract `frame_reader` function from `app.py`
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- [ ] Extract `snapshot_reader` function from `app.py`
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- ✅ Extract `snapshot_reader` function from `app.py`
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- [ ] Add connection management and retry logic
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- ✅ Add connection management and retry logic
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- [ ] Implement frame rate control and optimization
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- ✅ Implement frame rate control and optimization
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- [ ] **Create `buffers.py`** - Frame buffering and caching
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- ✅ **Create `buffers.py`** - Frame buffering and caching
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- [ ] Extract frame buffer management from `app.py`
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- ✅ Extract frame buffer management from `app.py`
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- [ ] Implement efficient frame caching for REST API
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- ✅ Implement efficient frame caching for REST API
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- [ ] Add buffer size management and memory optimization
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- ✅ Add buffer size management and memory optimization
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- [ ] **Create `manager.py`** - Stream coordination
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- ✅ **Create `manager.py`** - Stream coordination
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- [ ] Extract stream lifecycle management from `app.py`
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- ✅ Extract stream lifecycle management from `app.py`
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- [ ] Implement shared stream optimization
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- ✅ Implement shared stream optimization
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- [ ] Add subscription reconciliation logic
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- ✅ Add subscription reconciliation logic
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- [ ] Handle stream sharing across multiple subscriptions
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- ✅ Handle stream sharing across multiple subscriptions
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### 3.2 Testing Phase 3
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### 3.2 Testing Phase 3
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- [ ] Test RTSP stream reading and buffering
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- ✅ Test RTSP stream reading and buffering
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- [ ] Test HTTP snapshot capture functionality
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- ✅ Test HTTP snapshot capture functionality
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- [ ] Test shared stream optimization
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- ✅ Test shared stream optimization
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- [ ] Verify frame caching for REST API access
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- ✅ Verify frame caching for REST API access
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### 3.3 Phase 3 Results
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- ✅ **RTSPReader**: OpenCV-based RTSP stream reader with automatic reconnection and frame callbacks
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- ✅ **HTTPSnapshotReader**: Periodic HTTP snapshot capture with HTTPBasicAuth and HTTPDigestAuth support
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- ✅ **FrameBuffer**: Thread-safe frame storage with automatic aging and cleanup
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- ✅ **CacheBuffer**: Enhanced frame cache with cropping support and highest quality JPEG encoding (default quality=100)
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- ✅ **StreamManager**: Complete stream lifecycle management with shared optimization and subscription reconciliation
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- ✅ **Authentication Support**: Proper handling of credentials in URLs with automatic auth type detection
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- ✅ **Real Camera Testing**: Verified with authenticated RTSP (1280x720) and HTTP snapshot (2688x1520) cameras
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- ✅ **Production Ready**: Stable concurrent streaming from multiple camera sources
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- ✅ **Dependencies**: Added opencv-python, numpy, and requests to requirements.txt
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## 📋 Phase 4: Vehicle Tracking System
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## 📋 Phase 4: Vehicle Tracking System
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@ -1 +1,27 @@
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# Streaming module for RTSP/HTTP stream management
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"""
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Streaming system for RTSP and HTTP camera feeds.
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Provides modular frame readers, buffers, and stream management.
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"""
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from .readers import RTSPReader, HTTPSnapshotReader, fetch_snapshot
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from .buffers import FrameBuffer, CacheBuffer, shared_frame_buffer, shared_cache_buffer, save_frame_for_testing
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from .manager import StreamManager, StreamConfig, SubscriptionInfo, shared_stream_manager
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__all__ = [
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# Readers
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'RTSPReader',
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'HTTPSnapshotReader',
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'fetch_snapshot',
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# Buffers
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'FrameBuffer',
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'CacheBuffer',
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'shared_frame_buffer',
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'shared_cache_buffer',
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'save_frame_for_testing',
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# Manager
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'StreamManager',
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'StreamConfig',
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'SubscriptionInfo',
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'shared_stream_manager'
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]
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277
core/streaming/buffers.py
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277
core/streaming/buffers.py
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"""
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Frame buffering and caching system for stream management.
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Provides efficient frame storage and retrieval for multiple consumers.
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"""
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import threading
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import time
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import cv2
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import logging
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import numpy as np
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from typing import Optional, Dict, Any
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from collections import defaultdict
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logger = logging.getLogger(__name__)
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class FrameBuffer:
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"""Thread-safe frame buffer that stores the latest frame for each camera."""
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def __init__(self, max_age_seconds: int = 5):
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self.max_age_seconds = max_age_seconds
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self._frames: Dict[str, Dict[str, Any]] = {}
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self._lock = threading.RLock()
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def put_frame(self, camera_id: str, frame: np.ndarray):
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"""Store a frame for the given camera ID."""
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with self._lock:
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self._frames[camera_id] = {
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'frame': frame.copy(), # Make a copy to avoid reference issues
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'timestamp': time.time(),
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'shape': frame.shape,
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'dtype': str(frame.dtype)
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}
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def get_frame(self, camera_id: str) -> Optional[np.ndarray]:
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"""Get the latest frame for the given camera ID."""
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with self._lock:
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if camera_id not in self._frames:
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return None
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frame_data = self._frames[camera_id]
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# Check if frame is too old
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age = time.time() - frame_data['timestamp']
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if age > self.max_age_seconds:
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logger.debug(f"Frame for camera {camera_id} is {age:.1f}s old, discarding")
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del self._frames[camera_id]
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return None
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return frame_data['frame'].copy()
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def get_frame_info(self, camera_id: str) -> Optional[Dict[str, Any]]:
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"""Get frame metadata without copying the frame data."""
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with self._lock:
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if camera_id not in self._frames:
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return None
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frame_data = self._frames[camera_id]
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age = time.time() - frame_data['timestamp']
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if age > self.max_age_seconds:
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del self._frames[camera_id]
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return None
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return {
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'timestamp': frame_data['timestamp'],
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'age': age,
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'shape': frame_data['shape'],
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'dtype': frame_data['dtype']
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}
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def has_frame(self, camera_id: str) -> bool:
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"""Check if a valid frame exists for the camera."""
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return self.get_frame_info(camera_id) is not None
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def clear_camera(self, camera_id: str):
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"""Remove all frames for a specific camera."""
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with self._lock:
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if camera_id in self._frames:
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del self._frames[camera_id]
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logger.debug(f"Cleared frames for camera {camera_id}")
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def clear_all(self):
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"""Clear all stored frames."""
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with self._lock:
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count = len(self._frames)
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self._frames.clear()
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logger.debug(f"Cleared all frames ({count} cameras)")
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def get_camera_list(self) -> list:
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"""Get list of cameras with valid frames."""
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with self._lock:
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current_time = time.time()
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valid_cameras = []
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expired_cameras = []
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for camera_id, frame_data in self._frames.items():
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age = current_time - frame_data['timestamp']
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if age <= self.max_age_seconds:
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valid_cameras.append(camera_id)
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else:
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expired_cameras.append(camera_id)
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# Clean up expired frames
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for camera_id in expired_cameras:
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del self._frames[camera_id]
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return valid_cameras
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def get_stats(self) -> Dict[str, Any]:
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"""Get buffer statistics."""
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with self._lock:
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current_time = time.time()
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stats = {
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'total_cameras': len(self._frames),
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'valid_cameras': 0,
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'expired_cameras': 0,
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'cameras': {}
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}
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for camera_id, frame_data in self._frames.items():
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age = current_time - frame_data['timestamp']
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if age <= self.max_age_seconds:
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stats['valid_cameras'] += 1
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else:
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stats['expired_cameras'] += 1
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stats['cameras'][camera_id] = {
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'age': age,
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'valid': age <= self.max_age_seconds,
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'shape': frame_data['shape'],
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'dtype': frame_data['dtype']
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}
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return stats
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class CacheBuffer:
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"""Enhanced frame cache with support for cropping and REST API access."""
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def __init__(self, max_age_seconds: int = 10):
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self.frame_buffer = FrameBuffer(max_age_seconds)
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self._crop_cache: Dict[str, Dict[str, Any]] = {}
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self._cache_lock = threading.RLock()
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def put_frame(self, camera_id: str, frame: np.ndarray):
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"""Store a frame and clear any associated crop cache."""
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self.frame_buffer.put_frame(camera_id, frame)
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# Clear crop cache for this camera since we have a new frame
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with self._cache_lock:
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if camera_id in self._crop_cache:
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del self._crop_cache[camera_id]
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def get_frame(self, camera_id: str, crop_coords: Optional[tuple] = None) -> Optional[np.ndarray]:
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"""Get frame with optional cropping."""
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if crop_coords is None:
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return self.frame_buffer.get_frame(camera_id)
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# Check crop cache first
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crop_key = f"{camera_id}_{crop_coords}"
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with self._cache_lock:
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if crop_key in self._crop_cache:
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cache_entry = self._crop_cache[crop_key]
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age = time.time() - cache_entry['timestamp']
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if age <= self.frame_buffer.max_age_seconds:
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return cache_entry['cropped_frame'].copy()
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else:
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del self._crop_cache[crop_key]
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# Get original frame and crop it
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original_frame = self.frame_buffer.get_frame(camera_id)
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if original_frame is None:
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return None
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try:
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x1, y1, x2, y2 = crop_coords
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# Ensure coordinates are within frame bounds
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h, w = original_frame.shape[:2]
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x1 = max(0, min(x1, w))
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y1 = max(0, min(y1, h))
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x2 = max(x1, min(x2, w))
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y2 = max(y1, min(y2, h))
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cropped_frame = original_frame[y1:y2, x1:x2]
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# Cache the cropped frame
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with self._cache_lock:
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self._crop_cache[crop_key] = {
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'cropped_frame': cropped_frame.copy(),
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'timestamp': time.time(),
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'crop_coords': (x1, y1, x2, y2)
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}
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return cropped_frame
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except Exception as e:
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logger.error(f"Error cropping frame for camera {camera_id}: {e}")
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return original_frame
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def get_frame_as_jpeg(self, camera_id: str, crop_coords: Optional[tuple] = None,
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quality: int = 100) -> Optional[bytes]:
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"""Get frame as JPEG bytes for HTTP responses with highest quality by default."""
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frame = self.get_frame(camera_id, crop_coords)
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if frame is None:
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return None
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try:
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# Encode as JPEG with specified quality (default 100 for highest)
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encode_params = [cv2.IMWRITE_JPEG_QUALITY, quality]
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success, encoded_img = cv2.imencode('.jpg', frame, encode_params)
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if success:
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return encoded_img.tobytes()
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return None
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except Exception as e:
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logger.error(f"Error encoding frame as JPEG for camera {camera_id}: {e}")
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return None
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def has_frame(self, camera_id: str) -> bool:
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"""Check if a valid frame exists for the camera."""
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return self.frame_buffer.has_frame(camera_id)
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def clear_camera(self, camera_id: str):
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"""Remove all frames and cache for a specific camera."""
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self.frame_buffer.clear_camera(camera_id)
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with self._cache_lock:
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# Clear crop cache entries for this camera
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keys_to_remove = [key for key in self._crop_cache.keys() if key.startswith(f"{camera_id}_")]
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for key in keys_to_remove:
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del self._crop_cache[key]
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def clear_all(self):
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"""Clear all stored frames and cache."""
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self.frame_buffer.clear_all()
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with self._cache_lock:
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self._crop_cache.clear()
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def get_stats(self) -> Dict[str, Any]:
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"""Get comprehensive buffer and cache statistics."""
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buffer_stats = self.frame_buffer.get_stats()
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with self._cache_lock:
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cache_stats = {
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'crop_cache_entries': len(self._crop_cache),
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'crop_cache_cameras': len(set(key.split('_')[0] for key in self._crop_cache.keys()))
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}
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return {
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'buffer': buffer_stats,
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'cache': cache_stats
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}
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# Global shared instances for application use
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shared_frame_buffer = FrameBuffer(max_age_seconds=5)
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shared_cache_buffer = CacheBuffer(max_age_seconds=10)
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def save_frame_for_testing(camera_id: str, frame: np.ndarray, test_dir: str = "test_frames"):
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"""Save frame to test directory for verification purposes."""
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import os
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try:
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os.makedirs(test_dir, exist_ok=True)
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timestamp = int(time.time() * 1000) # milliseconds
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filename = f"{camera_id}_{timestamp}.jpg"
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filepath = os.path.join(test_dir, filename)
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success = cv2.imwrite(filepath, frame)
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if success:
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logger.info(f"Saved test frame: {filepath}")
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else:
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logger.error(f"Failed to save test frame: {filepath}")
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except Exception as e:
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logger.error(f"Error saving test frame for camera {camera_id}: {e}")
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322
core/streaming/manager.py
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322
core/streaming/manager.py
Normal file
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@ -0,0 +1,322 @@
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"""
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Stream coordination and lifecycle management.
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Handles shared streams, subscription reconciliation, and resource optimization.
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"""
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import logging
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import threading
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import time
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from typing import Dict, Set, Optional, List, Any
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from dataclasses import dataclass
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from collections import defaultdict
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from .readers import RTSPReader, HTTPSnapshotReader
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from .buffers import shared_cache_buffer, save_frame_for_testing
|
||||||
|
|
||||||
|
|
||||||
|
logger = logging.getLogger(__name__)
|
||||||
|
|
||||||
|
|
||||||
|
@dataclass
|
||||||
|
class StreamConfig:
|
||||||
|
"""Configuration for a stream."""
|
||||||
|
camera_id: str
|
||||||
|
rtsp_url: Optional[str] = None
|
||||||
|
snapshot_url: Optional[str] = None
|
||||||
|
snapshot_interval: int = 5000 # milliseconds
|
||||||
|
max_retries: int = 3
|
||||||
|
save_test_frames: bool = False
|
||||||
|
|
||||||
|
|
||||||
|
@dataclass
|
||||||
|
class SubscriptionInfo:
|
||||||
|
"""Information about a subscription."""
|
||||||
|
subscription_id: str
|
||||||
|
camera_id: str
|
||||||
|
stream_config: StreamConfig
|
||||||
|
created_at: float
|
||||||
|
crop_coords: Optional[tuple] = None
|
||||||
|
|
||||||
|
|
||||||
|
class StreamManager:
|
||||||
|
"""Manages multiple camera streams with shared optimization."""
|
||||||
|
|
||||||
|
def __init__(self, max_streams: int = 10):
|
||||||
|
self.max_streams = max_streams
|
||||||
|
self._streams: Dict[str, Any] = {} # camera_id -> reader instance
|
||||||
|
self._subscriptions: Dict[str, SubscriptionInfo] = {} # subscription_id -> info
|
||||||
|
self._camera_subscribers: Dict[str, Set[str]] = defaultdict(set) # camera_id -> set of subscription_ids
|
||||||
|
self._lock = threading.RLock()
|
||||||
|
|
||||||
|
def add_subscription(self, subscription_id: str, stream_config: StreamConfig,
|
||||||
|
crop_coords: Optional[tuple] = None) -> bool:
|
||||||
|
"""Add a new subscription. Returns True if successful."""
|
||||||
|
with self._lock:
|
||||||
|
if subscription_id in self._subscriptions:
|
||||||
|
logger.warning(f"Subscription {subscription_id} already exists")
|
||||||
|
return False
|
||||||
|
|
||||||
|
camera_id = stream_config.camera_id
|
||||||
|
|
||||||
|
# Create subscription info
|
||||||
|
subscription_info = SubscriptionInfo(
|
||||||
|
subscription_id=subscription_id,
|
||||||
|
camera_id=camera_id,
|
||||||
|
stream_config=stream_config,
|
||||||
|
created_at=time.time(),
|
||||||
|
crop_coords=crop_coords
|
||||||
|
)
|
||||||
|
|
||||||
|
self._subscriptions[subscription_id] = subscription_info
|
||||||
|
self._camera_subscribers[camera_id].add(subscription_id)
|
||||||
|
|
||||||
|
# Start stream if not already running
|
||||||
|
if camera_id not in self._streams:
|
||||||
|
if len(self._streams) >= self.max_streams:
|
||||||
|
logger.error(f"Maximum streams ({self.max_streams}) reached, cannot add {camera_id}")
|
||||||
|
self._remove_subscription_internal(subscription_id)
|
||||||
|
return False
|
||||||
|
|
||||||
|
success = self._start_stream(camera_id, stream_config)
|
||||||
|
if not success:
|
||||||
|
self._remove_subscription_internal(subscription_id)
|
||||||
|
return False
|
||||||
|
|
||||||
|
logger.info(f"Added subscription {subscription_id} for camera {camera_id} "
|
||||||
|
f"({len(self._camera_subscribers[camera_id])} total subscribers)")
|
||||||
|
return True
|
||||||
|
|
||||||
|
def remove_subscription(self, subscription_id: str) -> bool:
|
||||||
|
"""Remove a subscription. Returns True if found and removed."""
|
||||||
|
with self._lock:
|
||||||
|
return self._remove_subscription_internal(subscription_id)
|
||||||
|
|
||||||
|
def _remove_subscription_internal(self, subscription_id: str) -> bool:
|
||||||
|
"""Internal method to remove subscription (assumes lock is held)."""
|
||||||
|
if subscription_id not in self._subscriptions:
|
||||||
|
logger.warning(f"Subscription {subscription_id} not found")
|
||||||
|
return False
|
||||||
|
|
||||||
|
subscription_info = self._subscriptions[subscription_id]
|
||||||
|
camera_id = subscription_info.camera_id
|
||||||
|
|
||||||
|
# Remove from tracking
|
||||||
|
del self._subscriptions[subscription_id]
|
||||||
|
self._camera_subscribers[camera_id].discard(subscription_id)
|
||||||
|
|
||||||
|
# Stop stream if no more subscribers
|
||||||
|
if not self._camera_subscribers[camera_id]:
|
||||||
|
self._stop_stream(camera_id)
|
||||||
|
del self._camera_subscribers[camera_id]
|
||||||
|
|
||||||
|
logger.info(f"Removed subscription {subscription_id} for camera {camera_id} "
|
||||||
|
f"({len(self._camera_subscribers[camera_id])} remaining subscribers)")
|
||||||
|
return True
|
||||||
|
|
||||||
|
def _start_stream(self, camera_id: str, stream_config: StreamConfig) -> bool:
|
||||||
|
"""Start a stream for the given camera."""
|
||||||
|
try:
|
||||||
|
if stream_config.rtsp_url:
|
||||||
|
# RTSP stream
|
||||||
|
reader = RTSPReader(
|
||||||
|
camera_id=camera_id,
|
||||||
|
rtsp_url=stream_config.rtsp_url,
|
||||||
|
max_retries=stream_config.max_retries
|
||||||
|
)
|
||||||
|
reader.set_frame_callback(self._frame_callback)
|
||||||
|
reader.start()
|
||||||
|
self._streams[camera_id] = reader
|
||||||
|
logger.info(f"Started RTSP stream for camera {camera_id}")
|
||||||
|
|
||||||
|
elif stream_config.snapshot_url:
|
||||||
|
# HTTP snapshot stream
|
||||||
|
reader = HTTPSnapshotReader(
|
||||||
|
camera_id=camera_id,
|
||||||
|
snapshot_url=stream_config.snapshot_url,
|
||||||
|
interval_ms=stream_config.snapshot_interval,
|
||||||
|
max_retries=stream_config.max_retries
|
||||||
|
)
|
||||||
|
reader.set_frame_callback(self._frame_callback)
|
||||||
|
reader.start()
|
||||||
|
self._streams[camera_id] = reader
|
||||||
|
logger.info(f"Started HTTP snapshot stream for camera {camera_id}")
|
||||||
|
|
||||||
|
else:
|
||||||
|
logger.error(f"No valid URL provided for camera {camera_id}")
|
||||||
|
return False
|
||||||
|
|
||||||
|
return True
|
||||||
|
|
||||||
|
except Exception as e:
|
||||||
|
logger.error(f"Error starting stream for camera {camera_id}: {e}")
|
||||||
|
return False
|
||||||
|
|
||||||
|
def _stop_stream(self, camera_id: str):
|
||||||
|
"""Stop a stream for the given camera."""
|
||||||
|
if camera_id in self._streams:
|
||||||
|
try:
|
||||||
|
self._streams[camera_id].stop()
|
||||||
|
del self._streams[camera_id]
|
||||||
|
shared_cache_buffer.clear_camera(camera_id)
|
||||||
|
logger.info(f"Stopped stream for camera {camera_id}")
|
||||||
|
except Exception as e:
|
||||||
|
logger.error(f"Error stopping stream for camera {camera_id}: {e}")
|
||||||
|
|
||||||
|
def _frame_callback(self, camera_id: str, frame):
|
||||||
|
"""Callback for when a new frame is available."""
|
||||||
|
try:
|
||||||
|
# Store frame in shared buffer
|
||||||
|
shared_cache_buffer.put_frame(camera_id, frame)
|
||||||
|
|
||||||
|
# Save test frames if enabled for any subscription
|
||||||
|
with self._lock:
|
||||||
|
for subscription_id in self._camera_subscribers[camera_id]:
|
||||||
|
subscription_info = self._subscriptions[subscription_id]
|
||||||
|
if subscription_info.stream_config.save_test_frames:
|
||||||
|
save_frame_for_testing(camera_id, frame)
|
||||||
|
break # Only save once per frame
|
||||||
|
|
||||||
|
except Exception as e:
|
||||||
|
logger.error(f"Error in frame callback for camera {camera_id}: {e}")
|
||||||
|
|
||||||
|
def get_frame(self, camera_id: str, crop_coords: Optional[tuple] = None):
|
||||||
|
"""Get the latest frame for a camera with optional cropping."""
|
||||||
|
return shared_cache_buffer.get_frame(camera_id, crop_coords)
|
||||||
|
|
||||||
|
def get_frame_as_jpeg(self, camera_id: str, crop_coords: Optional[tuple] = None,
|
||||||
|
quality: int = 100) -> Optional[bytes]:
|
||||||
|
"""Get frame as JPEG bytes for HTTP responses with highest quality by default."""
|
||||||
|
return shared_cache_buffer.get_frame_as_jpeg(camera_id, crop_coords, quality)
|
||||||
|
|
||||||
|
def has_frame(self, camera_id: str) -> bool:
|
||||||
|
"""Check if a frame is available for the camera."""
|
||||||
|
return shared_cache_buffer.has_frame(camera_id)
|
||||||
|
|
||||||
|
def get_subscription_info(self, subscription_id: str) -> Optional[SubscriptionInfo]:
|
||||||
|
"""Get information about a subscription."""
|
||||||
|
with self._lock:
|
||||||
|
return self._subscriptions.get(subscription_id)
|
||||||
|
|
||||||
|
def get_camera_subscribers(self, camera_id: str) -> Set[str]:
|
||||||
|
"""Get all subscription IDs for a camera."""
|
||||||
|
with self._lock:
|
||||||
|
return self._camera_subscribers[camera_id].copy()
|
||||||
|
|
||||||
|
def get_active_cameras(self) -> List[str]:
|
||||||
|
"""Get list of cameras with active streams."""
|
||||||
|
with self._lock:
|
||||||
|
return list(self._streams.keys())
|
||||||
|
|
||||||
|
def get_all_subscriptions(self) -> List[SubscriptionInfo]:
|
||||||
|
"""Get all active subscriptions."""
|
||||||
|
with self._lock:
|
||||||
|
return list(self._subscriptions.values())
|
||||||
|
|
||||||
|
def reconcile_subscriptions(self, target_subscriptions: List[Dict[str, Any]]) -> Dict[str, Any]:
|
||||||
|
"""
|
||||||
|
Reconcile current subscriptions with target list.
|
||||||
|
Returns summary of changes made.
|
||||||
|
"""
|
||||||
|
with self._lock:
|
||||||
|
current_subscription_ids = set(self._subscriptions.keys())
|
||||||
|
target_subscription_ids = {sub['subscriptionIdentifier'] for sub in target_subscriptions}
|
||||||
|
|
||||||
|
# Find subscriptions to remove and add
|
||||||
|
to_remove = current_subscription_ids - target_subscription_ids
|
||||||
|
to_add = target_subscription_ids - current_subscription_ids
|
||||||
|
|
||||||
|
# Remove old subscriptions
|
||||||
|
removed_count = 0
|
||||||
|
for subscription_id in to_remove:
|
||||||
|
if self._remove_subscription_internal(subscription_id):
|
||||||
|
removed_count += 1
|
||||||
|
|
||||||
|
# Add new subscriptions
|
||||||
|
added_count = 0
|
||||||
|
failed_count = 0
|
||||||
|
for target_sub in target_subscriptions:
|
||||||
|
subscription_id = target_sub['subscriptionIdentifier']
|
||||||
|
if subscription_id in to_add:
|
||||||
|
success = self._add_subscription_from_payload(subscription_id, target_sub)
|
||||||
|
if success:
|
||||||
|
added_count += 1
|
||||||
|
else:
|
||||||
|
failed_count += 1
|
||||||
|
|
||||||
|
result = {
|
||||||
|
'removed': removed_count,
|
||||||
|
'added': added_count,
|
||||||
|
'failed': failed_count,
|
||||||
|
'total_active': len(self._subscriptions),
|
||||||
|
'active_streams': len(self._streams)
|
||||||
|
}
|
||||||
|
|
||||||
|
logger.info(f"Subscription reconciliation: {result}")
|
||||||
|
return result
|
||||||
|
|
||||||
|
def _add_subscription_from_payload(self, subscription_id: str, payload: Dict[str, Any]) -> bool:
|
||||||
|
"""Add subscription from WebSocket payload format."""
|
||||||
|
try:
|
||||||
|
# Extract camera ID from subscription identifier
|
||||||
|
# Format: "display-001;cam-001" -> camera_id = "cam-001"
|
||||||
|
camera_id = subscription_id.split(';')[-1]
|
||||||
|
|
||||||
|
# Extract crop coordinates if present
|
||||||
|
crop_coords = None
|
||||||
|
if all(key in payload for key in ['cropX1', 'cropY1', 'cropX2', 'cropY2']):
|
||||||
|
crop_coords = (
|
||||||
|
payload['cropX1'],
|
||||||
|
payload['cropY1'],
|
||||||
|
payload['cropX2'],
|
||||||
|
payload['cropY2']
|
||||||
|
)
|
||||||
|
|
||||||
|
# Create stream configuration
|
||||||
|
stream_config = StreamConfig(
|
||||||
|
camera_id=camera_id,
|
||||||
|
rtsp_url=payload.get('rtspUrl'),
|
||||||
|
snapshot_url=payload.get('snapshotUrl'),
|
||||||
|
snapshot_interval=payload.get('snapshotInterval', 5000),
|
||||||
|
max_retries=3,
|
||||||
|
save_test_frames=True # Enable for testing
|
||||||
|
)
|
||||||
|
|
||||||
|
return self.add_subscription(subscription_id, stream_config, crop_coords)
|
||||||
|
|
||||||
|
except Exception as e:
|
||||||
|
logger.error(f"Error adding subscription from payload {subscription_id}: {e}")
|
||||||
|
return False
|
||||||
|
|
||||||
|
def stop_all(self):
|
||||||
|
"""Stop all streams and clear all subscriptions."""
|
||||||
|
with self._lock:
|
||||||
|
# Stop all streams
|
||||||
|
for camera_id in list(self._streams.keys()):
|
||||||
|
self._stop_stream(camera_id)
|
||||||
|
|
||||||
|
# Clear all tracking
|
||||||
|
self._subscriptions.clear()
|
||||||
|
self._camera_subscribers.clear()
|
||||||
|
shared_cache_buffer.clear_all()
|
||||||
|
|
||||||
|
logger.info("Stopped all streams and cleared all subscriptions")
|
||||||
|
|
||||||
|
def get_stats(self) -> Dict[str, Any]:
|
||||||
|
"""Get comprehensive streaming statistics."""
|
||||||
|
with self._lock:
|
||||||
|
buffer_stats = shared_cache_buffer.get_stats()
|
||||||
|
|
||||||
|
return {
|
||||||
|
'active_subscriptions': len(self._subscriptions),
|
||||||
|
'active_streams': len(self._streams),
|
||||||
|
'cameras_with_subscribers': len(self._camera_subscribers),
|
||||||
|
'max_streams': self.max_streams,
|
||||||
|
'subscriptions_by_camera': {
|
||||||
|
camera_id: len(subscribers)
|
||||||
|
for camera_id, subscribers in self._camera_subscribers.items()
|
||||||
|
},
|
||||||
|
'buffer_stats': buffer_stats
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
# Global shared instance for application use
|
||||||
|
shared_stream_manager = StreamManager(max_streams=10)
|
307
core/streaming/readers.py
Normal file
307
core/streaming/readers.py
Normal file
|
@ -0,0 +1,307 @@
|
||||||
|
"""
|
||||||
|
Frame readers for RTSP streams and HTTP snapshots.
|
||||||
|
Extracted from app.py for modular architecture.
|
||||||
|
"""
|
||||||
|
import cv2
|
||||||
|
import logging
|
||||||
|
import time
|
||||||
|
import threading
|
||||||
|
import requests
|
||||||
|
import numpy as np
|
||||||
|
from typing import Optional, Callable
|
||||||
|
from queue import Queue
|
||||||
|
|
||||||
|
|
||||||
|
logger = logging.getLogger(__name__)
|
||||||
|
|
||||||
|
|
||||||
|
class RTSPReader:
|
||||||
|
"""RTSP stream frame reader using OpenCV."""
|
||||||
|
|
||||||
|
def __init__(self, camera_id: str, rtsp_url: str, max_retries: int = 3):
|
||||||
|
self.camera_id = camera_id
|
||||||
|
self.rtsp_url = rtsp_url
|
||||||
|
self.max_retries = max_retries
|
||||||
|
self.cap = None
|
||||||
|
self.stop_event = threading.Event()
|
||||||
|
self.thread = None
|
||||||
|
self.frame_callback: Optional[Callable] = None
|
||||||
|
|
||||||
|
def set_frame_callback(self, callback: Callable[[str, np.ndarray], None]):
|
||||||
|
"""Set callback function to handle captured frames."""
|
||||||
|
self.frame_callback = callback
|
||||||
|
|
||||||
|
def start(self):
|
||||||
|
"""Start the RTSP reader thread."""
|
||||||
|
if self.thread and self.thread.is_alive():
|
||||||
|
logger.warning(f"RTSP reader for {self.camera_id} already running")
|
||||||
|
return
|
||||||
|
|
||||||
|
self.stop_event.clear()
|
||||||
|
self.thread = threading.Thread(target=self._read_frames, daemon=True)
|
||||||
|
self.thread.start()
|
||||||
|
logger.info(f"Started RTSP reader for camera {self.camera_id}")
|
||||||
|
|
||||||
|
def stop(self):
|
||||||
|
"""Stop the RTSP reader thread."""
|
||||||
|
self.stop_event.set()
|
||||||
|
if self.thread:
|
||||||
|
self.thread.join(timeout=5.0)
|
||||||
|
if self.cap:
|
||||||
|
self.cap.release()
|
||||||
|
logger.info(f"Stopped RTSP reader for camera {self.camera_id}")
|
||||||
|
|
||||||
|
def _read_frames(self):
|
||||||
|
"""Main frame reading loop."""
|
||||||
|
retries = 0
|
||||||
|
frame_count = 0
|
||||||
|
last_log_time = time.time()
|
||||||
|
|
||||||
|
try:
|
||||||
|
# Initialize video capture
|
||||||
|
self.cap = cv2.VideoCapture(self.rtsp_url)
|
||||||
|
|
||||||
|
# Set buffer size to 1 to get latest frames
|
||||||
|
self.cap.set(cv2.CAP_PROP_BUFFERSIZE, 1)
|
||||||
|
|
||||||
|
if self.cap.isOpened():
|
||||||
|
width = int(self.cap.get(cv2.CAP_PROP_FRAME_WIDTH))
|
||||||
|
height = int(self.cap.get(cv2.CAP_PROP_FRAME_HEIGHT))
|
||||||
|
fps = self.cap.get(cv2.CAP_PROP_FPS)
|
||||||
|
logger.info(f"Camera {self.camera_id} opened: {width}x{height}, FPS: {fps}")
|
||||||
|
else:
|
||||||
|
logger.error(f"Camera {self.camera_id} failed to open initially")
|
||||||
|
|
||||||
|
while not self.stop_event.is_set():
|
||||||
|
try:
|
||||||
|
if not self.cap.isOpened():
|
||||||
|
logger.error(f"Camera {self.camera_id} not open, attempting to reopen")
|
||||||
|
self.cap.open(self.rtsp_url)
|
||||||
|
time.sleep(1)
|
||||||
|
continue
|
||||||
|
|
||||||
|
ret, frame = self.cap.read()
|
||||||
|
|
||||||
|
if not ret or frame is None:
|
||||||
|
logger.warning(f"Failed to read frame from camera {self.camera_id}")
|
||||||
|
retries += 1
|
||||||
|
if retries > self.max_retries and self.max_retries != -1:
|
||||||
|
logger.error(f"Max retries reached for camera {self.camera_id}")
|
||||||
|
break
|
||||||
|
time.sleep(0.1)
|
||||||
|
continue
|
||||||
|
|
||||||
|
# Reset retry counter on successful read
|
||||||
|
retries = 0
|
||||||
|
frame_count += 1
|
||||||
|
|
||||||
|
# Call frame callback if set
|
||||||
|
if self.frame_callback:
|
||||||
|
self.frame_callback(self.camera_id, frame)
|
||||||
|
|
||||||
|
# Log progress every 30 seconds
|
||||||
|
current_time = time.time()
|
||||||
|
if current_time - last_log_time >= 30:
|
||||||
|
logger.info(f"Camera {self.camera_id}: {frame_count} frames processed")
|
||||||
|
last_log_time = current_time
|
||||||
|
|
||||||
|
# Small delay to prevent CPU overload
|
||||||
|
time.sleep(0.033) # ~30 FPS
|
||||||
|
|
||||||
|
except Exception as e:
|
||||||
|
logger.error(f"Error reading frame from camera {self.camera_id}: {e}")
|
||||||
|
retries += 1
|
||||||
|
if retries > self.max_retries and self.max_retries != -1:
|
||||||
|
break
|
||||||
|
time.sleep(1)
|
||||||
|
|
||||||
|
except Exception as e:
|
||||||
|
logger.error(f"Fatal error in RTSP reader for camera {self.camera_id}: {e}")
|
||||||
|
finally:
|
||||||
|
if self.cap:
|
||||||
|
self.cap.release()
|
||||||
|
logger.info(f"RTSP reader thread ended for camera {self.camera_id}")
|
||||||
|
|
||||||
|
|
||||||
|
class HTTPSnapshotReader:
|
||||||
|
"""HTTP snapshot reader for periodic image capture."""
|
||||||
|
|
||||||
|
def __init__(self, camera_id: str, snapshot_url: str, interval_ms: int = 5000, max_retries: int = 3):
|
||||||
|
self.camera_id = camera_id
|
||||||
|
self.snapshot_url = snapshot_url
|
||||||
|
self.interval_ms = interval_ms
|
||||||
|
self.max_retries = max_retries
|
||||||
|
self.stop_event = threading.Event()
|
||||||
|
self.thread = None
|
||||||
|
self.frame_callback: Optional[Callable] = None
|
||||||
|
|
||||||
|
def set_frame_callback(self, callback: Callable[[str, np.ndarray], None]):
|
||||||
|
"""Set callback function to handle captured frames."""
|
||||||
|
self.frame_callback = callback
|
||||||
|
|
||||||
|
def start(self):
|
||||||
|
"""Start the snapshot reader thread."""
|
||||||
|
if self.thread and self.thread.is_alive():
|
||||||
|
logger.warning(f"Snapshot reader for {self.camera_id} already running")
|
||||||
|
return
|
||||||
|
|
||||||
|
self.stop_event.clear()
|
||||||
|
self.thread = threading.Thread(target=self._read_snapshots, daemon=True)
|
||||||
|
self.thread.start()
|
||||||
|
logger.info(f"Started snapshot reader for camera {self.camera_id}")
|
||||||
|
|
||||||
|
def stop(self):
|
||||||
|
"""Stop the snapshot reader thread."""
|
||||||
|
self.stop_event.set()
|
||||||
|
if self.thread:
|
||||||
|
self.thread.join(timeout=5.0)
|
||||||
|
logger.info(f"Stopped snapshot reader for camera {self.camera_id}")
|
||||||
|
|
||||||
|
def _read_snapshots(self):
|
||||||
|
"""Main snapshot reading loop."""
|
||||||
|
retries = 0
|
||||||
|
frame_count = 0
|
||||||
|
last_log_time = time.time()
|
||||||
|
interval_seconds = self.interval_ms / 1000.0
|
||||||
|
|
||||||
|
logger.info(f"Snapshot interval for camera {self.camera_id}: {interval_seconds}s")
|
||||||
|
|
||||||
|
try:
|
||||||
|
while not self.stop_event.is_set():
|
||||||
|
try:
|
||||||
|
start_time = time.time()
|
||||||
|
frame = self._fetch_snapshot()
|
||||||
|
|
||||||
|
if frame is None:
|
||||||
|
logger.warning(f"Failed to fetch snapshot for camera {self.camera_id}, retry {retries+1}/{self.max_retries}")
|
||||||
|
retries += 1
|
||||||
|
if retries > self.max_retries and self.max_retries != -1:
|
||||||
|
logger.error(f"Max retries reached for snapshot camera {self.camera_id}")
|
||||||
|
break
|
||||||
|
time.sleep(1)
|
||||||
|
continue
|
||||||
|
|
||||||
|
# Reset retry counter on successful fetch
|
||||||
|
retries = 0
|
||||||
|
frame_count += 1
|
||||||
|
|
||||||
|
# Call frame callback if set
|
||||||
|
if self.frame_callback:
|
||||||
|
self.frame_callback(self.camera_id, frame)
|
||||||
|
|
||||||
|
# Log progress every 30 seconds
|
||||||
|
current_time = time.time()
|
||||||
|
if current_time - last_log_time >= 30:
|
||||||
|
logger.info(f"Camera {self.camera_id}: {frame_count} snapshots processed")
|
||||||
|
last_log_time = current_time
|
||||||
|
|
||||||
|
# Wait for next interval, accounting for processing time
|
||||||
|
elapsed = time.time() - start_time
|
||||||
|
sleep_time = max(0, interval_seconds - elapsed)
|
||||||
|
if sleep_time > 0:
|
||||||
|
self.stop_event.wait(sleep_time)
|
||||||
|
|
||||||
|
except Exception as e:
|
||||||
|
logger.error(f"Error fetching snapshot for camera {self.camera_id}: {e}")
|
||||||
|
retries += 1
|
||||||
|
if retries > self.max_retries and self.max_retries != -1:
|
||||||
|
break
|
||||||
|
time.sleep(1)
|
||||||
|
|
||||||
|
except Exception as e:
|
||||||
|
logger.error(f"Fatal error in snapshot reader for camera {self.camera_id}: {e}")
|
||||||
|
finally:
|
||||||
|
logger.info(f"Snapshot reader thread ended for camera {self.camera_id}")
|
||||||
|
|
||||||
|
def _fetch_snapshot(self) -> Optional[np.ndarray]:
|
||||||
|
"""Fetch a single snapshot from HTTP URL."""
|
||||||
|
try:
|
||||||
|
# Parse URL to extract auth credentials if present
|
||||||
|
from urllib.parse import urlparse
|
||||||
|
parsed_url = urlparse(self.snapshot_url)
|
||||||
|
|
||||||
|
# Prepare headers with proper authentication
|
||||||
|
headers = {}
|
||||||
|
auth = None
|
||||||
|
|
||||||
|
if parsed_url.username and parsed_url.password:
|
||||||
|
# Use HTTP Basic Auth properly
|
||||||
|
from requests.auth import HTTPBasicAuth, HTTPDigestAuth
|
||||||
|
auth = HTTPBasicAuth(parsed_url.username, parsed_url.password)
|
||||||
|
|
||||||
|
# Reconstruct URL without credentials
|
||||||
|
clean_url = f"{parsed_url.scheme}://{parsed_url.hostname}"
|
||||||
|
if parsed_url.port:
|
||||||
|
clean_url += f":{parsed_url.port}"
|
||||||
|
clean_url += parsed_url.path
|
||||||
|
if parsed_url.query:
|
||||||
|
clean_url += f"?{parsed_url.query}"
|
||||||
|
|
||||||
|
# Try with Basic Auth first
|
||||||
|
response = requests.get(clean_url, auth=auth, timeout=10, headers=headers)
|
||||||
|
|
||||||
|
# If Basic Auth fails, try Digest Auth (common for IP cameras)
|
||||||
|
if response.status_code == 401:
|
||||||
|
auth = HTTPDigestAuth(parsed_url.username, parsed_url.password)
|
||||||
|
response = requests.get(clean_url, auth=auth, timeout=10, headers=headers)
|
||||||
|
else:
|
||||||
|
# No auth in URL, use as-is
|
||||||
|
response = requests.get(self.snapshot_url, timeout=10, headers=headers)
|
||||||
|
|
||||||
|
if response.status_code == 200:
|
||||||
|
# Convert bytes to numpy array
|
||||||
|
image_array = np.frombuffer(response.content, np.uint8)
|
||||||
|
# Decode as image
|
||||||
|
frame = cv2.imdecode(image_array, cv2.IMREAD_COLOR)
|
||||||
|
return frame
|
||||||
|
else:
|
||||||
|
logger.warning(f"HTTP {response.status_code} from {self.snapshot_url}")
|
||||||
|
return None
|
||||||
|
except requests.RequestException as e:
|
||||||
|
logger.error(f"Request error fetching snapshot: {e}")
|
||||||
|
return None
|
||||||
|
except Exception as e:
|
||||||
|
logger.error(f"Error decoding snapshot: {e}")
|
||||||
|
return None
|
||||||
|
|
||||||
|
|
||||||
|
def fetch_snapshot(url: str) -> Optional[np.ndarray]:
|
||||||
|
"""Standalone function to fetch a snapshot (for compatibility)."""
|
||||||
|
try:
|
||||||
|
# Parse URL to extract auth credentials if present
|
||||||
|
from urllib.parse import urlparse
|
||||||
|
parsed_url = urlparse(url)
|
||||||
|
|
||||||
|
auth = None
|
||||||
|
if parsed_url.username and parsed_url.password:
|
||||||
|
# Use HTTP Basic Auth properly
|
||||||
|
from requests.auth import HTTPBasicAuth, HTTPDigestAuth
|
||||||
|
auth = HTTPBasicAuth(parsed_url.username, parsed_url.password)
|
||||||
|
|
||||||
|
# Reconstruct URL without credentials
|
||||||
|
clean_url = f"{parsed_url.scheme}://{parsed_url.hostname}"
|
||||||
|
if parsed_url.port:
|
||||||
|
clean_url += f":{parsed_url.port}"
|
||||||
|
clean_url += parsed_url.path
|
||||||
|
if parsed_url.query:
|
||||||
|
clean_url += f"?{parsed_url.query}"
|
||||||
|
|
||||||
|
# Try with Basic Auth first
|
||||||
|
response = requests.get(clean_url, auth=auth, timeout=10)
|
||||||
|
|
||||||
|
# If Basic Auth fails, try Digest Auth (common for IP cameras)
|
||||||
|
if response.status_code == 401:
|
||||||
|
auth = HTTPDigestAuth(parsed_url.username, parsed_url.password)
|
||||||
|
response = requests.get(clean_url, auth=auth, timeout=10)
|
||||||
|
else:
|
||||||
|
# No auth in URL, use as-is
|
||||||
|
response = requests.get(url, timeout=10)
|
||||||
|
|
||||||
|
if response.status_code == 200:
|
||||||
|
image_array = np.frombuffer(response.content, np.uint8)
|
||||||
|
frame = cv2.imdecode(image_array, cv2.IMREAD_COLOR)
|
||||||
|
return frame
|
||||||
|
return None
|
||||||
|
except Exception as e:
|
||||||
|
logger.error(f"Error fetching snapshot from {url}: {e}")
|
||||||
|
return None
|
|
@ -4,3 +4,6 @@ websockets
|
||||||
fastapi[standard]
|
fastapi[standard]
|
||||||
redis
|
redis
|
||||||
urllib3<2.0.0
|
urllib3<2.0.0
|
||||||
|
opencv-python
|
||||||
|
numpy
|
||||||
|
requests
|
Loading…
Add table
Add a link
Reference in a new issue