346 lines
12 KiB
Python
346 lines
12 KiB
Python
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"""
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Vision API for screen capture and streaming.
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Currently implements WebSocket streaming for the map panel.
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OCR and advanced vision features are gated behind configuration flags for V2.
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"""
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import asyncio
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import json
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import logging
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from typing import Optional, Dict, Any
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from fastapi import APIRouter, WebSocket, WebSocketDisconnect, HTTPException, Depends
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from fastapi.responses import JSONResponse
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from pydantic import BaseModel, Field
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from ..core.config import get_config
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from ..core.screen import get_screen_capture, capture_region
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logger = logging.getLogger(__name__)
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router = APIRouter()
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class StreamConfig(BaseModel):
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"""Configuration for video streaming."""
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fps: int = Field(30, ge=1, le=60, description="Frames per second")
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quality: int = Field(85, ge=1, le=100, description="JPEG quality")
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resolution: str = Field("720p", description="Stream resolution preset")
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region_x: int = Field(0, ge=0, description="Region X coordinate")
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region_y: int = Field(0, ge=0, description="Region Y coordinate")
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region_width: int = Field(640, ge=1, description="Region width")
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region_height: int = Field(480, ge=1, description="Region height")
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class RegionDefinition(BaseModel):
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"""Definition of a screen region for capture."""
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name: str = Field(..., description="Region name")
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x: int = Field(..., ge=0, description="X coordinate")
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y: int = Field(..., ge=0, description="Y coordinate")
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width: int = Field(..., gt=0, description="Width")
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height: int = Field(..., gt=0, description="Height")
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description: Optional[str] = Field(None, description="Region description")
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class CaptureRequest(BaseModel):
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"""Request to capture a screen region."""
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x: int = Field(0, ge=0, description="X coordinate")
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y: int = Field(0, ge=0, description="Y coordinate")
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width: int = Field(640, gt=0, description="Width")
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height: int = Field(480, gt=0, description="Height")
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format: str = Field("base64", description="Output format (base64 or raw)")
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quality: int = Field(85, ge=1, le=100, description="JPEG quality")
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class StreamManager:
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"""Manages WebSocket streaming sessions."""
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def __init__(self):
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self.active_streams: Dict[str, WebSocket] = {}
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self.stream_configs: Dict[str, StreamConfig] = {}
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async def add_stream(self, client_id: str, websocket: WebSocket, config: StreamConfig):
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"""Add a new streaming session."""
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await websocket.accept()
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self.active_streams[client_id] = websocket
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self.stream_configs[client_id] = config
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logger.info(f"Stream started for client {client_id}")
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async def remove_stream(self, client_id: str):
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"""Remove a streaming session."""
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if client_id in self.active_streams:
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del self.active_streams[client_id]
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del self.stream_configs[client_id]
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logger.info(f"Stream stopped for client {client_id}")
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async def stream_frame(self, client_id: str, frame_data: str):
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"""Send a frame to a specific client."""
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if client_id in self.active_streams:
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websocket = self.active_streams[client_id]
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try:
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await websocket.send_text(frame_data)
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except Exception as e:
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logger.error(f"Failed to send frame to client {client_id}: {e}")
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await self.remove_stream(client_id)
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# Global stream manager
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stream_manager = StreamManager()
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@router.websocket("/ws/stream")
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async def stream_video(websocket: WebSocket):
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"""
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WebSocket endpoint for streaming video of a screen region.
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The client should send a JSON message with stream configuration:
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{
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"action": "start",
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"config": {
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"fps": 30,
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"quality": 85,
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"resolution": "720p",
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"region_x": 0,
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"region_y": 0,
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"region_width": 640,
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"region_height": 480
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}
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}
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"""
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config = get_config()
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client_id = id(websocket)
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try:
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# Accept the WebSocket connection
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await websocket.accept()
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logger.info(f"WebSocket connected: client {client_id}")
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# Wait for initial configuration message
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data = await websocket.receive_text()
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message = json.loads(data)
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if message.get("action") != "start":
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await websocket.send_json({"error": "First message must be start action"})
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await websocket.close()
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return
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# Parse stream configuration
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stream_config = StreamConfig(**message.get("config", {}))
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# Override with server config if needed
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stream_config.fps = min(stream_config.fps, config.capture.fps)
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stream_config.quality = config.capture.quality
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# Add to stream manager
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await stream_manager.add_stream(str(client_id), websocket, stream_config)
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# Send confirmation
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await websocket.send_json({"type": "config", "data": stream_config.model_dump()})
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# Get screen capture instance
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capture = get_screen_capture()
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# Calculate frame interval
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frame_interval = 1.0 / stream_config.fps
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# Streaming loop
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while True:
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try:
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# Capture the region
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image = capture.capture_region(
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stream_config.region_x,
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stream_config.region_y,
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stream_config.region_width,
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stream_config.region_height,
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)
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# Resize if needed
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if stream_config.resolution != "native":
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target_width, target_height = capture.get_resolution_preset(stream_config.resolution)
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# Only resize if different from capture size
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if target_width != stream_config.region_width or target_height != stream_config.region_height:
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image = capture.resize_image(image, width=target_width)
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# Convert to base64
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base64_image = capture.image_to_base64(image, quality=stream_config.quality)
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# Send frame
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frame_data = json.dumps(
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{"type": "frame", "data": base64_image, "timestamp": asyncio.get_event_loop().time()}
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)
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await websocket.send_text(frame_data)
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# Wait for next frame
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await asyncio.sleep(frame_interval)
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except WebSocketDisconnect:
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logger.info(f"Client {client_id} disconnected")
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break
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except Exception as e:
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logger.error(f"Error in stream loop for client {client_id}: {e}")
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await websocket.send_json({"type": "error", "message": str(e)})
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break
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except Exception as e:
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logger.error(f"WebSocket error for client {client_id}: {e}")
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finally:
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await stream_manager.remove_stream(str(client_id))
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logger.info(f"WebSocket closed: client {client_id}")
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@router.post("/capture", response_model=Dict[str, Any])
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async def capture_screen_region(request: CaptureRequest):
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"""
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Capture a single frame from a screen region.
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This is useful for testing or getting a single snapshot.
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"""
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try:
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capture = get_screen_capture()
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# Capture the region
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image = capture.capture_region(request.x, request.y, request.width, request.height)
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if request.format == "base64":
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# Convert to base64
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base64_image = capture.image_to_base64(image, quality=request.quality)
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return {
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"success": True,
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"format": "base64",
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"data": base64_image,
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"width": request.width,
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"height": request.height,
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}
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else:
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return {"success": False, "error": f"Unsupported format: {request.format}"}
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except Exception as e:
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logger.error(f"Failed to capture region: {e}")
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raise HTTPException(status_code=500, detail=str(e))
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@router.get("/regions")
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async def get_regions():
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"""
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Get predefined screen regions for capture.
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Returns common regions like map area, club indicator, etc.
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"""
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config = get_config()
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# Predefined regions for GSPro UI elements
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regions = {
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"map": {
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"name": "Map Panel",
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"x": config.capture.region_x,
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"y": config.capture.region_y,
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"width": config.capture.region_width,
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"height": config.capture.region_height,
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"description": "GSPro mini-map or expanded map view",
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},
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"club": {
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"name": "Club Indicator",
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"x": 50,
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"y": 200,
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"width": 200,
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"height": 100,
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"description": "Current club selection display",
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},
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"shot_info": {
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"name": "Shot Information",
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"x": 50,
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"y": 50,
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"width": 300,
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"height": 150,
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"description": "Shot distance and trajectory information",
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},
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"scorecard": {
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"name": "Scorecard",
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"x": 400,
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"y": 100,
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"width": 800,
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"height": 600,
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"description": "Scorecard overlay when visible",
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},
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}
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return {"regions": regions, "total": len(regions)}
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@router.post("/regions/{region_name}")
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async def update_region(region_name: str, region: RegionDefinition):
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"""
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Update or create a screen region definition.
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This allows users to define custom regions for their setup.
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"""
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config = get_config()
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if region_name == "map":
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# Update the map region in config
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config.capture.region_x = region.x
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config.capture.region_y = region.y
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config.capture.region_width = region.width
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config.capture.region_height = region.height
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config.save()
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return {"success": True, "message": f"Region '{region_name}' updated", "region": region.model_dump()}
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else:
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# For now, only map region is persisted
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# V2 will add support for custom regions
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return {"success": False, "message": "Custom regions not yet supported (V2 feature)"}
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# OCR endpoints - gated behind vision config flag
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@router.post("/ocr")
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async def perform_ocr(request: CaptureRequest):
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"""
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Perform OCR on a screen region (V2 feature).
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This endpoint is only available when vision features are enabled.
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"""
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config = get_config()
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if not config.vision.enabled:
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raise HTTPException(status_code=403, detail="Vision features are not enabled. This is a V2 feature.")
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# OCR implementation will go here in V2
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return {"success": False, "message": "OCR features coming in V2", "vision_enabled": config.vision.enabled}
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@router.get("/markers")
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async def get_markers():
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"""
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Get visual markers for template matching (V2 feature).
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This endpoint is only available when vision features are enabled.
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"""
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config = get_config()
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if not config.vision.enabled:
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raise HTTPException(status_code=403, detail="Vision features are not enabled. This is a V2 feature.")
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# Marker management will go here in V2
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return {"markers": [], "message": "Marker features coming in V2", "vision_enabled": config.vision.enabled}
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@router.get("/status")
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async def get_vision_status():
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"""Get the status of vision features."""
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config = get_config()
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return {
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"streaming_enabled": True,
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"ocr_enabled": config.vision.enabled,
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"markers_enabled": config.vision.enabled,
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"active_streams": len(stream_manager.active_streams),
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"capture_config": {
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"fps": config.capture.fps,
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"quality": config.capture.quality,
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"resolution": config.capture.resolution,
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},
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}
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