Initialize forms in PDF document (#4867)

* Initialize forms in PDF document

Initialize forms in the PDF document before processing pages.

* Initialize forms in PDF document on load

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Co-authored-by: Lin Manhui <[email protected]>

Author: 315930399

paddlex/inference/serving/infra/utils.py

@@ -188,6 +188,7 @@ def read_pdf(
     page_info_list: List[PDFPageInfo] = []
     with _lock:
         doc = pdfium.PdfDocument(bytes_)
+        doc.init_forms()
         try:
             for page in doc:
                 if max_num_imgs is not None and len(images) >= max_num_imgs:

paddlex/inference/utils/io/readers.py

@@ -297,6 +297,7 @@ def __init__(self, rotate=0, zoom=2.0):
     def load_file(self, in_path):
         """load pdf file"""
         doc = pdfium.PdfDocument(in_path)
+        doc.init_forms()
         return doc
 
     def read_file(self, in_path):