feat: optimize the format convert

app/api/v1/endpoints/image.py

@@ -2,11 +2,12 @@
 
 from fastapi import APIRouter, Depends, HTTPException
 
-from app.core.dependencies import get_image_processor, get_layout_detector, get_ocr_service, get_mineru_ocr_service
-from app.schemas.image import ImageOCRRequest, ImageOCRResponse
+from app.core.dependencies import get_image_processor, get_layout_detector, get_ocr_service, get_mineru_ocr_service, get_converter
+from app.schemas.image import ImageOCRRequest, ImageOCRResponse, LatexToOmmlRequest, LatexToOmmlResponse
 from app.services.image_processor import ImageProcessor
 from app.services.layout_detector import LayoutDetector
 from app.services.ocr_service import OCRService, MineruOCRService
+from app.services.converter import Converter
 
 router = APIRouter()
 
@@ -28,6 +29,9 @@ async def process_image_ocr(
        - If plain text exists: use PP-DocLayoutV2 for mixed recognition
        - Otherwise: use PaddleOCR-VL with formula prompt
     4. Convert output to LaTeX, Markdown, and MathML formats
+
+    Note: OMML conversion is not included due to performance overhead.
+    Use the /latex-to-omml endpoint to convert LaTeX to OMML separately.
     """
 
     image = image_processor.preprocess(
@@ -49,4 +53,34 @@ async def process_image_ocr(
         latex=ocr_result.get("latex", ""),
         markdown=ocr_result.get("markdown", ""),
         mathml=ocr_result.get("mathml", ""),
+        mml=ocr_result.get("mml", ""),
     )
+
+
+@router.post("/latex-to-omml", response_model=LatexToOmmlResponse)
+async def convert_latex_to_omml(
+    request: LatexToOmmlRequest,
+    converter: Converter = Depends(get_converter),
+) -> LatexToOmmlResponse:
+    """Convert LaTeX formula to OMML (Office Math Markup Language).
+
+    OMML is the math format used by Microsoft Word and other Office applications.
+    This endpoint is separate from the main OCR endpoint due to the performance
+    overhead of OMML conversion (requires creating a temporary DOCX file).
+
+    Args:
+        request: Contains the LaTeX formula to convert (without $ or $$ delimiters).
+
+    Returns:
+        OMML representation of the formula.
+    """
+    if not request.latex or not request.latex.strip():
+        raise HTTPException(status_code=400, detail="LaTeX formula cannot be empty")
+
+    try:
+        omml = converter.convert_to_omml(request.latex)
+        return LatexToOmmlResponse(omml=omml)
+    except ValueError as e:
+        raise HTTPException(status_code=400, detail=str(e))
+    except RuntimeError as e:
+        raise HTTPException(status_code=503, detail=str(e))