21 KiB
🚀 USDA Vision Camera System - Complete API Documentation
This document provides comprehensive documentation for all API endpoints in the USDA Vision Camera System, including recent enhancements and new features.
📋 Table of Contents
- 🔧 System Status & Health
- 📷 Camera Management
- 🎥 Recording Control
- 🤖 Auto-Recording Management
- 🎛️ Camera Configuration
- 📡 MQTT & Machine Status
- 💾 Storage & File Management
- 🔄 Camera Recovery & Diagnostics
- 📺 Live Streaming
- 🎬 Video Streaming & Playback
- 🌐 WebSocket Real-time Updates
🔧 System Status & Health
Get System Status
GET /system/status
Response: SystemStatusResponse
{
"system_started": true,
"mqtt_connected": true,
"last_mqtt_message": "2024-01-15T10:30:00Z",
"machines": {
"vibratory_conveyor": {
"name": "vibratory_conveyor",
"state": "ON",
"last_updated": "2024-01-15T10:30:00Z"
}
},
"cameras": {
"camera1": {
"name": "camera1",
"status": "ACTIVE",
"is_recording": false,
"auto_recording_enabled": true
}
},
"active_recordings": 0,
"total_recordings": 15,
"uptime_seconds": 3600.5
}
Health Check
GET /health
Response: Simple health status
{
"status": "healthy",
"timestamp": "2024-01-15T10:30:00Z"
}
📷 Camera Management
Get All Cameras
GET /cameras
Response: Dict[str, CameraStatusResponse]
Get Specific Camera Status
GET /cameras/{camera_name}/status
Response: CameraStatusResponse
{
"name": "camera1",
"status": "ACTIVE",
"is_recording": false,
"last_checked": "2024-01-15T10:30:00Z",
"last_error": null,
"device_info": {
"model": "GigE Camera",
"serial": "12345"
},
"current_recording_file": null,
"recording_start_time": null,
"auto_recording_enabled": true,
"auto_recording_active": false,
"auto_recording_failure_count": 0,
"auto_recording_last_attempt": null,
"auto_recording_last_error": null
}
🎥 Recording Control
Start Recording
POST /cameras/{camera_name}/start-recording
Content-Type: application/json
{
"filename": "test_recording.avi",
"exposure_ms": 2.0,
"gain": 4.0,
"fps": 5.0
}
Request Model: StartRecordingRequest
filename(optional): Custom filename (datetime prefix will be added automatically)exposure_ms(optional): Exposure time in millisecondsgain(optional): Camera gain valuefps(optional): Target frames per second
Response: StartRecordingResponse
{
"success": true,
"message": "Recording started for camera1",
"filename": "20240115_103000_test_recording.avi"
}
Key Features:
- ✅ Automatic datetime prefix: All filenames get
YYYYMMDD_HHMMSS_prefix - ✅ Dynamic camera settings: Adjust exposure, gain, and FPS per recording
- ✅ Backward compatibility: All existing API calls work unchanged
Stop Recording
POST /cameras/{camera_name}/stop-recording
Response: StopRecordingResponse
{
"success": true,
"message": "Recording stopped for camera1",
"duration_seconds": 45.2
}
🤖 Auto-Recording Management
Enable Auto-Recording for Camera
POST /cameras/{camera_name}/auto-recording/enable
Response: AutoRecordingConfigResponse
{
"success": true,
"message": "Auto-recording enabled for camera1",
"camera_name": "camera1",
"enabled": true
}
Disable Auto-Recording for Camera
POST /cameras/{camera_name}/auto-recording/disable
Response: AutoRecordingConfigResponse
Get Auto-Recording Status
GET /auto-recording/status
Response: AutoRecordingStatusResponse
{
"running": true,
"auto_recording_enabled": true,
"retry_queue": {},
"enabled_cameras": ["camera1", "camera2"]
}
Auto-Recording Features:
- 🤖 MQTT-triggered recording: Automatically starts/stops based on machine state
- 🔄 Retry logic: Failed recordings are retried with configurable delays
- 📊 Per-camera control: Enable/disable auto-recording individually
- 📈 Status tracking: Monitor failure counts and last attempts
🎛️ Camera Configuration
Get Camera Configuration
GET /cameras/{camera_name}/config
Response: CameraConfigResponse
{
"name": "camera1",
"machine_topic": "blower_separator",
"storage_path": "/storage/camera1",
"exposure_ms": 0.3,
"gain": 4.0,
"target_fps": 0,
"enabled": true,
"video_format": "mp4",
"video_codec": "mp4v",
"video_quality": 95,
"auto_start_recording_enabled": true,
"auto_recording_max_retries": 3,
"auto_recording_retry_delay_seconds": 2,
"contrast": 100,
"saturation": 100,
"gamma": 100,
"noise_filter_enabled": false,
"denoise_3d_enabled": false,
"auto_white_balance": false,
"color_temperature_preset": 0,
"wb_red_gain": 0.94,
"wb_green_gain": 1.0,
"wb_blue_gain": 0.87,
"anti_flicker_enabled": false,
"light_frequency": 0,
"bit_depth": 8,
"hdr_enabled": false,
"hdr_gain_mode": 2
}
Update Camera Configuration
PUT /cameras/{camera_name}/config
Content-Type: application/json
{
"exposure_ms": 2.0,
"gain": 4.0,
"target_fps": 5.0,
"sharpness": 130
}
Apply Configuration (Restart Required)
POST /cameras/{camera_name}/apply-config
Configuration Categories:
- ✅ Real-time:
exposure_ms,gain,target_fps,sharpness,contrast, etc. - ⚠️ Restart required:
noise_filter_enabled,denoise_3d_enabled,bit_depth,video_format,video_codec,video_quality
For detailed configuration options, see Camera Configuration API Guide.
📡 MQTT & Machine Status
Get All Machines
GET /machines
Response: Dict[str, MachineStatusResponse]
Get MQTT Status
GET /mqtt/status
Response: MQTTStatusResponse
{
"connected": true,
"broker_host": "192.168.1.110",
"broker_port": 1883,
"subscribed_topics": ["vibratory_conveyor", "blower_separator"],
"last_message_time": "2024-01-15T10:30:00Z",
"message_count": 1250,
"error_count": 2,
"uptime_seconds": 3600.5
}
Get MQTT Events History
GET /mqtt/events?limit=10
Response: MQTTEventsHistoryResponse
{
"events": [
{
"machine_name": "vibratory_conveyor",
"topic": "vibratory_conveyor",
"payload": "ON",
"normalized_state": "ON",
"timestamp": "2024-01-15T10:30:00Z",
"message_number": 1250
}
],
"total_events": 1250,
"last_updated": "2024-01-15T10:30:00Z"
}
💾 Storage & File Management
Get Storage Statistics
GET /storage/stats
Response: StorageStatsResponse
{
"base_path": "/storage",
"total_files": 150,
"total_size_bytes": 5368709120,
"cameras": {
"camera1": {
"file_count": 75,
"total_size_bytes": 2684354560
},
"camera2": {
"file_count": 75,
"total_size_bytes": 2684354560
}
},
"disk_usage": {
"total_bytes": 107374182400,
"used_bytes": 53687091200,
"free_bytes": 53687091200,
"usage_percent": 50.0
}
}
Get File List
POST /storage/files
Content-Type: application/json
{
"camera_name": "camera1",
"start_date": "2024-01-15",
"end_date": "2024-01-16",
"limit": 50
}
Response: FileListResponse
{
"files": [
{
"filename": "20240115_103000_test_recording.avi",
"camera_name": "camera1",
"size_bytes": 52428800,
"created_time": "2024-01-15T10:30:00Z",
"duration_seconds": 30.5
}
],
"total_count": 1
}
Cleanup Old Files
POST /storage/cleanup
Content-Type: application/json
{
"max_age_days": 30
}
Response: CleanupResponse
{
"files_removed": 25,
"bytes_freed": 1073741824,
"errors": []
}
🔄 Camera Recovery & Diagnostics
Test Camera Connection
POST /cameras/{camera_name}/test-connection
Response: CameraTestResponse
Reconnect Camera
POST /cameras/{camera_name}/reconnect
Response: CameraRecoveryResponse
Restart Camera Grab Process
POST /cameras/{camera_name}/restart-grab
Response: CameraRecoveryResponse
Reset Camera Timestamp
POST /cameras/{camera_name}/reset-timestamp
Response: CameraRecoveryResponse
Full Camera Reset
POST /cameras/{camera_name}/full-reset
Response: CameraRecoveryResponse
Reinitialize Camera
POST /cameras/{camera_name}/reinitialize
Response: CameraRecoveryResponse
Recovery Response Example:
{
"success": true,
"message": "Camera camera1 reconnected successfully",
"camera_name": "camera1",
"operation": "reconnect",
"timestamp": "2024-01-15T10:30:00Z"
}
📺 Live Streaming
Get Live MJPEG Stream
GET /cameras/{camera_name}/stream
Response: MJPEG video stream (multipart/x-mixed-replace)
Start Camera Stream
POST /cameras/{camera_name}/start-stream
Stop Camera Stream
POST /cameras/{camera_name}/stop-stream
Streaming Features:
- 📺 MJPEG format: Compatible with web browsers and React apps
- 🔄 Concurrent operation: Stream while recording simultaneously
- ⚡ Low latency: Real-time preview for monitoring
For detailed streaming integration, see Streaming Guide.
🎬 Video Streaming & Playback
The system includes a comprehensive video streaming module that provides YouTube-like video playback capabilities with HTTP range request support, thumbnail generation, and intelligent caching.
List Videos
GET /videos/
Query Parameters:
camera_name(optional): Filter by camera namestart_date(optional): Filter videos created after this date (ISO format)end_date(optional): Filter videos created before this date (ISO format)limit(optional): Maximum number of results (default: 50, max: 1000)include_metadata(optional): Include video metadata (default: false)
Response: VideoListResponse
{
"videos": [
{
"file_id": "camera1_auto_blower_separator_20250804_143022.mp4",
"camera_name": "camera1",
"filename": "camera1_auto_blower_separator_20250804_143022.mp4",
"file_size_bytes": 31457280,
"format": "mp4",
"status": "completed",
"created_at": "2025-08-04T14:30:22",
"start_time": "2025-08-04T14:30:22",
"end_time": "2025-08-04T14:32:22",
"machine_trigger": "blower_separator",
"is_streamable": true,
"needs_conversion": false,
"metadata": {
"duration_seconds": 120.5,
"width": 1920,
"height": 1080,
"fps": 30.0,
"codec": "mp4v",
"bitrate": 5000000,
"aspect_ratio": 1.777
}
}
],
"total_count": 1
}
Get Video Information
GET /videos/{file_id}
Response: VideoInfoResponse with detailed video information including metadata.
Stream Video
GET /videos/{file_id}/stream
Headers:
Range: bytes=0-1023(optional): Request specific byte range for seeking
Features:
- ✅ HTTP Range Requests: Enables video seeking and progressive download
- ✅ Partial Content: Returns 206 status for range requests
- ✅ Format Conversion: Automatic AVI to MP4 conversion for web compatibility
- ✅ Intelligent Caching: Optimized performance with byte-range caching
- ✅ CORS Enabled: Ready for web browser integration
Response Headers:
Accept-Ranges: bytesContent-Length: {size}Content-Range: bytes {start}-{end}/{total}(for range requests)Cache-Control: public, max-age=3600
Get Video Thumbnail
GET /videos/{file_id}/thumbnail?timestamp=5.0&width=320&height=240
Query Parameters:
timestamp(optional): Time position in seconds (default: 1.0)width(optional): Thumbnail width in pixels (default: 320)height(optional): Thumbnail height in pixels (default: 240)
Response: JPEG image data with caching headers
Get Streaming Information
GET /videos/{file_id}/info
Response: StreamingInfoResponse
{
"file_id": "camera1_recording_20250804_143022.avi",
"file_size_bytes": 52428800,
"content_type": "video/mp4",
"supports_range_requests": true,
"chunk_size_bytes": 262144
}
Video Validation
POST /videos/{file_id}/validate
Response: Validation status and accessibility check
{
"file_id": "camera1_recording_20250804_143022.avi",
"is_valid": true
}
Cache Management
POST /videos/{file_id}/cache/invalidate
Response: Cache invalidation status
{
"file_id": "camera1_recording_20250804_143022.avi",
"cache_invalidated": true
}
Admin: Cache Cleanup
POST /admin/videos/cache/cleanup?max_size_mb=100
Response: Cache cleanup results
{
"cache_cleaned": true,
"entries_removed": 15,
"max_size_mb": 100
}
Video Streaming Features:
- 🎥 Multiple Formats: Native MP4 support with AVI conversion
- 📱 Web Compatible: Direct integration with HTML5 video elements
- ⚡ High Performance: Intelligent caching and adaptive chunking
- 🖼️ Thumbnail Generation: Extract preview images at any timestamp
- 🔄 Range Requests: Efficient seeking and progressive download
🌐 WebSocket Real-time Updates
Connect to WebSocket
const ws = new WebSocket('ws://localhost:8000/ws');
ws.onmessage = (event) => {
const update = JSON.parse(event.data);
console.log('Real-time update:', update);
};
WebSocket Message Types:
system_status: System status changescamera_status: Camera status updatesrecording_started: Recording start eventsrecording_stopped: Recording stop eventsmqtt_message: MQTT message receivedauto_recording_event: Auto-recording status changes
Example WebSocket Message:
{
"type": "recording_started",
"data": {
"camera_name": "camera1",
"filename": "20240115_103000_auto_recording.avi",
"timestamp": "2024-01-15T10:30:00Z"
},
"timestamp": "2024-01-15T10:30:00Z"
}
🚀 Quick Start Examples
Basic System Monitoring
# Check system health
curl http://localhost:8000/health
# Get overall system status
curl http://localhost:8000/system/status
# Get all camera statuses
curl http://localhost:8000/cameras
Manual Recording Control
# Start recording with default settings
curl -X POST http://localhost:8000/cameras/camera1/start-recording \
-H "Content-Type: application/json" \
-d '{"filename": "manual_test.avi"}'
# Start recording with custom camera settings
curl -X POST http://localhost:8000/cameras/camera1/start-recording \
-H "Content-Type: application/json" \
-d '{
"filename": "high_quality.avi",
"exposure_ms": 2.0,
"gain": 4.0,
"fps": 5.0
}'
# Stop recording
curl -X POST http://localhost:8000/cameras/camera1/stop-recording
Auto-Recording Management
# Enable auto-recording for camera1
curl -X POST http://localhost:8000/cameras/camera1/auto-recording/enable
# Check auto-recording status
curl http://localhost:8000/auto-recording/status
# Disable auto-recording for camera1
curl -X POST http://localhost:8000/cameras/camera1/auto-recording/disable
Video Streaming Operations
# List all videos
curl http://localhost:8000/videos/
# List videos from specific camera with metadata
curl "http://localhost:8000/videos/?camera_name=camera1&include_metadata=true"
# Get video information
curl http://localhost:8000/videos/camera1_recording_20250804_143022.avi
# Get video thumbnail
curl "http://localhost:8000/videos/camera1_recording_20250804_143022.avi/thumbnail?timestamp=5.0&width=320&height=240" \
--output thumbnail.jpg
# Get streaming info
curl http://localhost:8000/videos/camera1_recording_20250804_143022.avi/info
# Stream video with range request
curl -H "Range: bytes=0-1023" \
http://localhost:8000/videos/camera1_recording_20250804_143022.avi/stream
# Validate video file
curl -X POST http://localhost:8000/videos/camera1_recording_20250804_143022.avi/validate
# Clean up video cache (admin)
curl -X POST "http://localhost:8000/admin/videos/cache/cleanup?max_size_mb=100"
Camera Configuration
# Get current camera configuration
curl http://localhost:8000/cameras/camera1/config
# Update camera settings (real-time)
curl -X PUT http://localhost:8000/cameras/camera1/config \
-H "Content-Type: application/json" \
-d '{
"exposure_ms": 1.5,
"gain": 3.0,
"sharpness": 130,
"contrast": 120
}'
📈 Recent API Changes & Enhancements
✨ New in Latest Version
1. Enhanced Recording API
- Dynamic camera settings: Set exposure, gain, and FPS per recording
- Automatic datetime prefixes: All filenames get timestamp prefixes
- Backward compatibility: Existing API calls work unchanged
2. Auto-Recording Feature
- Per-camera control: Enable/disable auto-recording individually
- MQTT integration: Automatic recording based on machine states
- Retry logic: Failed recordings are automatically retried
- Status tracking: Monitor auto-recording attempts and failures
3. Advanced Camera Configuration
- Real-time settings: Update exposure, gain, image quality without restart
- Image enhancement: Sharpness, contrast, saturation, gamma controls
- Noise reduction: Configurable noise filtering and 3D denoising
- HDR support: High Dynamic Range imaging capabilities
4. Live Streaming
- MJPEG streaming: Real-time camera preview
- Concurrent operation: Stream while recording simultaneously
- Web-compatible: Direct integration with React/HTML video elements
5. Enhanced Monitoring
- MQTT event history: Track machine state changes over time
- Storage statistics: Monitor disk usage and file counts
- WebSocket updates: Real-time system status notifications
6. Video Streaming Module
- HTTP Range Requests: Efficient video seeking and progressive download
- Thumbnail Generation: Extract preview images from videos at any timestamp
- Format Conversion: Automatic AVI to MP4 conversion for web compatibility
- Intelligent Caching: Byte-range caching for optimal streaming performance
- Admin Tools: Cache management and video validation endpoints
🔄 Migration Notes
From Previous Versions
- Recording API: All existing calls work, but now return filenames with datetime prefixes
- Configuration: New camera settings are optional and backward compatible
- Auto-recording: New feature, requires enabling in
config.jsonand per camera
Configuration Updates
{
"cameras": [
{
"name": "camera1",
"auto_start_recording_enabled": true, // NEW: Enable auto-recording
"sharpness": 120, // NEW: Image quality settings
"contrast": 110,
"saturation": 100,
"gamma": 100,
"noise_filter_enabled": true,
"hdr_enabled": false
}
],
"system": {
"auto_recording_enabled": true // NEW: Global auto-recording toggle
}
}
🔗 Related Documentation
- 📷 Camera Configuration API Guide - Detailed camera settings
- 🤖 Auto-Recording Feature Guide - React integration
- 📺 Streaming Guide - Live video streaming
- 🎬 Video Streaming Guide - Video playback and streaming
- 🤖 AI Agent Video Integration Guide - Complete integration guide for AI agents
- 🔧 Camera Recovery Guide - Troubleshooting
- 📡 MQTT Logging Guide - MQTT configuration
📞 Support & Integration
API Base URL
- Development:
http://localhost:8000 - Production: Configure in
config.jsonundersystem.api_hostandsystem.api_port
Error Handling
All endpoints return standard HTTP status codes:
200: Success206: Partial Content (for video range requests)400: Bad Request (invalid parameters)404: Resource not found (camera, file, video, etc.)416: Range Not Satisfiable (invalid video range request)500: Internal server error503: Service unavailable (camera manager, MQTT, etc.)
Video Streaming Specific Errors:
404: Video file not found or not streamable416: Invalid range request (malformed Range header)500: Failed to read video data or generate thumbnail
Rate Limiting
- No rate limiting currently implemented
- WebSocket connections are limited to reasonable concurrent connections
CORS Support
- CORS is enabled for web dashboard integration
- Configure allowed origins in the API server settings