mirror of https://github.com/python/cpython
39 lines
988 B
Python
Executable File
39 lines
988 B
Python
Executable File
import imageop
|
|
|
|
error = 'imgconv.error'
|
|
|
|
LOSSY = 1
|
|
NOT_LOSSY = 0
|
|
|
|
def null(img, x, y):
|
|
return img
|
|
|
|
def mono2grey(img, x, y):
|
|
return imageop.mono2grey(img, x, y, 0, 255)
|
|
|
|
converters = [ \
|
|
('grey', 'grey4', imageop.grey2grey4, LOSSY), \
|
|
('grey', 'grey2', imageop.dither2grey2, LOSSY), \
|
|
('grey', 'mono', imageop.dither2mono, LOSSY), \
|
|
('mono', 'grey', mono2grey, NOT_LOSSY), \
|
|
('grey2', 'grey', imageop.grey22grey, NOT_LOSSY), \
|
|
('grey4', 'grey', imageop.grey42grey, NOT_LOSSY), \
|
|
]
|
|
|
|
def addconverter(fcs, tcs, lossy, func):
|
|
for i in range(len(converters)):
|
|
ifcs, itcs, irtn, ilossy = converters[i]
|
|
if (fcs, tcs) == (ifcs, itcs):
|
|
converters[i] = (fcs, tcs, func, lossy)
|
|
return
|
|
converters.append((fcs,tcs,lossy,func))
|
|
|
|
def getconverter(fcs, tcs):
|
|
if fcs == tcs: return null
|
|
|
|
for ifcs, itcs, irtn, ilossy in converters:
|
|
if (fcs, tcs) == (ifcs, itcs):
|
|
return irtn
|
|
raise error, 'Sorry, that conversion is not implemented'
|
|
|