2013-10-11 17:28:32 +00:00
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#
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# The Python Imaging Library.
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# $Id$
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#
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# standard mode descriptors
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#
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# History:
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# 2006-03-20 fl Added
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#
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# Copyright (c) 2006 by Secret Labs AB.
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# Copyright (c) 2006 by Fredrik Lundh.
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#
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# See the README file for information on usage and redistribution.
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#
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# mode descriptor cache
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_modes = {}
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2015-11-25 01:25:01 +00:00
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2013-10-11 17:28:32 +00:00
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##
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# Wrapper for mode strings.
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2015-11-25 01:25:01 +00:00
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class ModeDescriptor(object):
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2013-10-11 17:28:32 +00:00
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def __init__(self, mode, bands, basemode, basetype):
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self.mode = mode
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self.bands = bands
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self.basemode = basemode
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self.basetype = basetype
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def __str__(self):
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return self.mode
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2015-11-25 01:25:01 +00:00
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2013-10-11 17:28:32 +00:00
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##
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# Gets a mode descriptor for the given mode.
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def getmode(mode):
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if not _modes:
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# initialize mode cache
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2014-09-30 16:15:32 +00:00
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from PIL import Image
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2013-10-11 17:28:32 +00:00
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# core modes
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for m, (basemode, basetype, bands) in Image._MODEINFO.items():
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_modes[m] = ModeDescriptor(m, bands, basemode, basetype)
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# extra experimental modes
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_modes["LA"] = ModeDescriptor("LA", ("L", "A"), "L", "L")
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_modes["PA"] = ModeDescriptor("PA", ("P", "A"), "RGB", "L")
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# mapping modes
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_modes["I;16"] = ModeDescriptor("I;16", "I", "L", "L")
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_modes["I;16L"] = ModeDescriptor("I;16L", "I", "L", "L")
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_modes["I;16B"] = ModeDescriptor("I;16B", "I", "L", "L")
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return _modes[mode]
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