71 lines
2.1 KiB
Python
71 lines
2.1 KiB
Python
# -*- coding: utf-8 -*-
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"""
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Importing this module installs support for 16-bit images in PIL.
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This works by patching objects in the PIL namespace; no files are
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modified.
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"""
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import warnings
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warnings.warn(
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"Not used in pyqtgraph. Will be removed in 0.13",
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DeprecationWarning, stacklevel=2
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)
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from PIL import Image
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if Image.VERSION == '1.1.7':
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Image._MODE_CONV["I;16"] = ('%su2' % Image._ENDIAN, None)
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Image._fromarray_typemap[((1, 1), "<u2")] = ("I", "I;16")
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if Image.VERSION == '1.1.6':
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Image._MODE_CONV["I;16"] = ('%su2' % Image._ENDIAN, None)
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## just a copy of fromarray() from Image.py with I;16 added in
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def fromarray(obj, mode=None):
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arr = obj.__array_interface__
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shape = arr['shape']
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ndim = len(shape)
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try:
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strides = arr['strides']
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except KeyError:
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strides = None
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if mode is None:
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typestr = arr['typestr']
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if not (typestr[0] == '|' or typestr[0] == Image._ENDIAN or
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typestr[1:] not in ['u1', 'b1', 'i4', 'f4']):
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raise TypeError("cannot handle data-type")
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if typestr[0] == Image._ENDIAN:
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typestr = typestr[1:3]
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else:
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typestr = typestr[:2]
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if typestr == 'i4':
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mode = 'I'
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if typestr == 'u2':
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mode = 'I;16'
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elif typestr == 'f4':
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mode = 'F'
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elif typestr == 'b1':
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mode = '1'
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elif ndim == 2:
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mode = 'L'
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elif ndim == 3:
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mode = 'RGB'
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elif ndim == 4:
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mode = 'RGBA'
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else:
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raise TypeError("Do not understand data.")
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ndmax = 4
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bad_dims=0
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if mode in ['1','L','I','P','F']:
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ndmax = 2
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elif mode == 'RGB':
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ndmax = 3
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if ndim > ndmax:
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raise ValueError("Too many dimensions.")
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size = shape[:2][::-1]
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if strides is not None:
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obj = obj.tostring()
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return frombuffer(mode, size, obj, "raw", mode, 0, 1)
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Image.fromarray=fromarray
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