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# 🚀 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](#-system-status--health)
- [📷 Camera Management](#-camera-management)
- [🎥 Recording Control](#-recording-control)
- [🤖 Auto-Recording Management](#-auto-recording-management)
- [🎛️ Camera Configuration](#-camera-configuration)
- [📡 MQTT & Machine Status](#-mqtt--machine-status)
- [💾 Storage & File Management](#-storage--file-management)
- [🔄 Camera Recovery & Diagnostics](#-camera-recovery--diagnostics)
- [📺 Live Streaming](#-live-streaming)
- [🎬 Video Streaming & Playback](#-video-streaming--playback)
- [🌐 WebSocket Real-time Updates](#-websocket-real-time-updates)
## 🔧 System Status & Health
### Get System Status
```http
GET /system/status
```
**Response**: `SystemStatusResponse`
```json
{
"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
```http
GET /health
```
**Response**: Simple health status
```json
{
"status": "healthy",
"timestamp": "2024-01-15T10:30:00Z"
}
```
## 📷 Camera Management
### Get All Cameras
```http
GET /cameras
```
**Response**: `Dict[str, CameraStatusResponse]`
### Get Specific Camera Status
```http
GET /cameras/{camera_name}/status
```
**Response**: `CameraStatusResponse`
```json
{
"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
```http
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 milliseconds
- `gain` (optional): Camera gain value
- `fps` (optional): Target frames per second
**Response**: `StartRecordingResponse`
```json
{
"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
```http
POST /cameras/{camera_name}/stop-recording
```
**Response**: `StopRecordingResponse`
```json
{
"success": true,
"message": "Recording stopped for camera1",
"duration_seconds": 45.2
}
```
## 🤖 Auto-Recording Management
### Enable Auto-Recording for Camera
```http
POST /cameras/{camera_name}/auto-recording/enable
```
**Response**: `AutoRecordingConfigResponse`
```json
{
"success": true,
"message": "Auto-recording enabled for camera1",
"camera_name": "camera1",
"enabled": true
}
```
### Disable Auto-Recording for Camera
```http
POST /cameras/{camera_name}/auto-recording/disable
```
**Response**: `AutoRecordingConfigResponse`
### Get Auto-Recording Status
```http
GET /auto-recording/status
```
**Response**: `AutoRecordingStatusResponse`
```json
{
"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
```http
GET /cameras/{camera_name}/config
```
**Response**: `CameraConfigResponse`
```json
{
"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
```http
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)
```http
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](api/CAMERA_CONFIG_API.md).
## 📡 MQTT & Machine Status
### Get All Machines
```http
GET /machines
```
**Response**: `Dict[str, MachineStatusResponse]`
### Get MQTT Status
```http
GET /mqtt/status
```
**Response**: `MQTTStatusResponse`
```json
{
"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
```http
GET /mqtt/events?limit=10
```
**Response**: `MQTTEventsHistoryResponse`
```json
{
"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
```http
GET /storage/stats
```
**Response**: `StorageStatsResponse`
```json
{
"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
```http
POST /storage/files
Content-Type: application/json
{
"camera_name": "camera1",
"start_date": "2024-01-15",
"end_date": "2024-01-16",
"limit": 50
}
```
**Response**: `FileListResponse`
```json
{
"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
```http
POST /storage/cleanup
Content-Type: application/json
{
"max_age_days": 30
}
```
**Response**: `CleanupResponse`
```json
{
"files_removed": 25,
"bytes_freed": 1073741824,
"errors": []
}
```
## 🔄 Camera Recovery & Diagnostics
### Test Camera Connection
```http
POST /cameras/{camera_name}/test-connection
```
**Response**: `CameraTestResponse`
### Reconnect Camera
```http
POST /cameras/{camera_name}/reconnect
```
**Response**: `CameraRecoveryResponse`
### Restart Camera Grab Process
```http
POST /cameras/{camera_name}/restart-grab
```
**Response**: `CameraRecoveryResponse`
### Reset Camera Timestamp
```http
POST /cameras/{camera_name}/reset-timestamp
```
**Response**: `CameraRecoveryResponse`
### Full Camera Reset
```http
POST /cameras/{camera_name}/full-reset
```
**Response**: `CameraRecoveryResponse`
### Reinitialize Camera
```http
POST /cameras/{camera_name}/reinitialize
```
**Response**: `CameraRecoveryResponse`
**Recovery Response Example**:
```json
{
"success": true,
"message": "Camera camera1 reconnected successfully",
"camera_name": "camera1",
"operation": "reconnect",
"timestamp": "2024-01-15T10:30:00Z"
}
```
## 📺 Live Streaming
### Get Live MJPEG Stream
```http
GET /cameras/{camera_name}/stream
```
**Response**: MJPEG video stream (multipart/x-mixed-replace)
### Start Camera Stream
```http
POST /cameras/{camera_name}/start-stream
```
### Stop Camera Stream
```http
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](guides/STREAMING_GUIDE.md).
## 🎬 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
```http
GET /videos/
```
**Query Parameters:**
- `camera_name` (optional): Filter by camera name
- `start_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`
```json
{
"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
```http
GET /videos/{file_id}
```
**Response**: `VideoInfoResponse` with detailed video information including metadata.
### Stream Video
```http
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: bytes`
- `Content-Length: {size}`
- `Content-Range: bytes {start}-{end}/{total}` (for range requests)
- `Cache-Control: public, max-age=3600`
### Get Video Thumbnail
```http
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
```http
GET /videos/{file_id}/info
```
**Response**: `StreamingInfoResponse`
```json
{
"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
```http
POST /videos/{file_id}/validate
```
**Response**: Validation status and accessibility check
```json
{
"file_id": "camera1_recording_20250804_143022.avi",
"is_valid": true
}
```
### Cache Management
```http
POST /videos/{file_id}/cache/invalidate
```
**Response**: Cache invalidation status
```json
{
"file_id": "camera1_recording_20250804_143022.avi",
"cache_invalidated": true
}
```
### Admin: Cache Cleanup
```http
POST /admin/videos/cache/cleanup?max_size_mb=100
```
**Response**: Cache cleanup results
```json
{
"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
```javascript
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 changes
- `camera_status`: Camera status updates
- `recording_started`: Recording start events
- `recording_stopped`: Recording stop events
- `mqtt_message`: MQTT message received
- `auto_recording_event`: Auto-recording status changes
**Example WebSocket Message**:
```json
{
"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
```bash
# 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
```bash
# 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
```bash
# 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
```bash
# 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
```bash
# 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
1. **Recording API**: All existing calls work, but now return filenames with datetime prefixes
2. **Configuration**: New camera settings are optional and backward compatible
3. **Auto-recording**: New feature, requires enabling in `config.json` and per camera
#### Configuration Updates
```json
{
"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](api/CAMERA_CONFIG_API.md) - Detailed camera settings
- [🤖 Auto-Recording Feature Guide](features/AUTO_RECORDING_FEATURE_GUIDE.md) - React integration
- [📺 Streaming Guide](guides/STREAMING_GUIDE.md) - Live video streaming
- [🎬 Video Streaming Guide](VIDEO_STREAMING.md) - Video playback and streaming
- [🤖 AI Agent Video Integration Guide](AI_AGENT_VIDEO_INTEGRATION_GUIDE.md) - Complete integration guide for AI agents
- [🔧 Camera Recovery Guide](guides/CAMERA_RECOVERY_GUIDE.md) - Troubleshooting
- [📡 MQTT Logging Guide](guides/MQTT_LOGGING_GUIDE.md) - MQTT configuration
## 📞 Support & Integration
### API Base URL
- **Development**: `http://localhost:8000`
- **Production**: Configure in `config.json` under `system.api_host` and `system.api_port`
### Error Handling
All endpoints return standard HTTP status codes:
- `200`: Success
- `206`: 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 error
- `503`: Service unavailable (camera manager, MQTT, etc.)
**Video Streaming Specific Errors:**
- `404`: Video file not found or not streamable
- `416`: 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
```
```