"""
ROCm backend — GPU-accelerated inference for Radeon 760M-class hardware.

Stub: raises NotImplementedError on all factory methods. To enable,
set `vision.backend: rocm` in mulita.yml once ROCm support is implemented.
"""
from app.config import VisionSettings
from app.services.vision.base import Embedder, OCREngine, ObjectDetector, FaceProcessor


class ROCmBackend:
    def __init__(self, vision_settings: VisionSettings):
        self._settings = vision_settings

    def create_embedder(self) -> Embedder:
        raise NotImplementedError("ROCm backend not yet implemented — use 'onnx'")

    def create_ocr(self) -> OCREngine:
        raise NotImplementedError("ROCm backend not yet implemented — use 'onnx'")

    def create_detector(self) -> ObjectDetector:
        raise NotImplementedError("ROCm backend not yet implemented — use 'onnx'")

    def create_face_processor(self) -> FaceProcessor:
        raise NotImplementedError("ROCm backend not yet implemented — use 'onnx'")