RailReaderCore

Portable libraries powering RailReader2 and intended for reuse by future companion apps (web, mobile). Distributed (planned) as a set of NuGet packages.

Packages

Project	Purpose	External deps
RailReader.Core	Portable abstractions, models, controllers, rail-navigation, line detection, search, annotations	OpenAI (for VlmService)
RailReader.Core.Pdfium	Desktop PDFium implementations of the Core interfaces + filesystem-backed AppConfig / AnnotationService / ConsoleLogger / LayoutModelLocator	PDFium native libraries
RailReader.Core.Analysis	ONNX-backed ILayoutAnalyzer (PP-DocLayoutV3)	Microsoft.ML.OnnxRuntime
RailReader.Renderer.Skia	SkiaSharp rasterisation + factory; provides the IPdfServiceFactory desktop consumers wire into Core	SkiaSharp, PDFtoImage

Reference graph

RailReader.Core              ← no native deps, no IO
  ├─ Core.Pdfium             → Core
  ├─ Core.Analysis           → Core
  └─ Renderer.Skia           → Core + Core.Pdfium

A future Lite (web/WASM) app would consume RailReader.Core only and substitute its own IPdfService / IPdfTextService / ILayoutAnalyzer implementations (e.g. PDF.js, ORT-Web).

Build & test

dotnet build RailReaderCore.slnx -c Release
dotnet test tests/RailReader.Core.Tests -c Release

The PP-DocLayoutV3 ONNX model is needed only by RailReader.Core.Analysis consumers; download it via:

./scripts/download-model.sh

License

MIT — see LICENSE.