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#
# Copyright (C) 2005 Alex Cobb
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
"""Transfer of Gamera image data in Python strings.
"""
from gamera.plugin import *
class _to_raw_string(PluginFunction):
"""
Returns the image's binary data as a Python string.
Requires a copying operation; may fail for very large images.
This function is not intended to be used directly. To move data
to/from Numeric/numarray/PIL, use the functions in numeric_io.py,
numarray_io.py and pil_io.py respectively.
"""
self_type = ImageType(ALL)
return_type = Class("string_from_image")
class _from_raw_string(PluginFunction):
"""
Instantiates an image from binary data in a Python string.
Requires a copying operation; may fail for very large images.
This function is not intended to be used directly. To move data
to/from Numeric/numarray/PIL, use the functions in numeric_io.py,
numarray_io.py and pil_io.py respectively.
"""
self_type = None
## Image constructor uses:
## page_offset_y, page_offset_x,
## nrows, ncols, pixel_format=0, storage_type=0,
## so we'll do something similar:
args = Args([Point("offset"), Dim("dim"),
Int("pixel_type"), Int("storage_type"),
Class("data_string")])
return_type = ImageType(ALL)
class StringIOModule(PluginModule):
category = "ExternalLibraries"
cpp_headers=["string_io.hpp"]
functions = [_to_raw_string,
_from_raw_string]
author = "Alex Cobb"
url = ('http://www.oeb.harvard.edu/faculty/holbrook/'
'people/alex/Website/alex.htm')
module = StringIOModule()
_from_raw_string = _from_raw_string()
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