Varia's website
https://varia.zone
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
74 lines
1.5 KiB
74 lines
1.5 KiB
1 week ago
|
#
|
||
|
|
# The Python Imaging Library
|
||
|
|
# $Id$
|
||
|
|
#
|
||
|
|
# HDF5 stub adapter
|
||
|
|
#
|
||
|
|
# Copyright (c) 2000-2003 by Fredrik Lundh
|
||
|
|
#
|
||
|
|
# See the README file for information on usage and redistribution.
|
||
|
|
#
|
||
|
|
|
||
|
|
from . import Image, ImageFile
|
||
|
|
|
||
|
|
_handler = None
|
||
|
|
|
||
|
|
|
||
|
|
def register_handler(handler):
|
||
|
|
"""
|
||
|
|
Install application-specific HDF5 image handler.
|
||
|
|
|
||
|
|
:param handler: Handler object.
|
||
|
|
"""
|
||
|
|
global _handler
|
||
|
|
_handler = handler
|
||
|
|
|
||
|
|
|
||
|
|
# --------------------------------------------------------------------
|
||
|
|
# Image adapter
|
||
|
|
|
||
|
|
|
||
|
|
def _accept(prefix):
|
||
|
|
return prefix[:8] == b"\x89HDF\r\n\x1a\n"
|
||
|
|
|
||
|
|
|
||
|
|
class HDF5StubImageFile(ImageFile.StubImageFile):
|
||
|
|
|
||
|
|
format = "HDF5"
|
||
|
|
format_description = "HDF5"
|
||
|
|
|
||
|
|
def _open(self):
|
||
|
|
|
||
|
|
offset = self.fp.tell()
|
||
|
|
|
||
|
|
if not _accept(self.fp.read(8)):
|
||
|
|
raise SyntaxError("Not an HDF file")
|
||
|
|
|
||
|
|
self.fp.seek(offset)
|
||
|
|
|
||
|
|
# make something up
|
||
|
|
self.mode = "F"
|
||
|
|
self._size = 1, 1
|
||
|
|
|
||
|
|
loader = self._load()
|
||
|
|
if loader:
|
||
|
|
loader.open(self)
|
||
|
|
|
||
|
|
def _load(self):
|
||
|
|
return _handler
|
||
|
|
|
||
|
|
|
||
|
|
def _save(im, fp, filename):
|
||
|
|
if _handler is None or not hasattr("_handler", "save"):
|
||
|
|
raise OSError("HDF5 save handler not installed")
|
||
|
|
_handler.save(im, fp, filename)
|
||
|
|
|
||
|
|
|
||
|
|
# --------------------------------------------------------------------
|
||
|
|
# Registry
|
||
|
|
|
||
|
|
Image.register_open(HDF5StubImageFile.format, HDF5StubImageFile, _accept)
|
||
|
|
Image.register_save(HDF5StubImageFile.format, _save)
|
||
|
|
|
||
|
|
Image.register_extensions(HDF5StubImageFile.format, [".h5", ".hdf"])
|