arcode 0.1

Description:

arcode 0.1

Description
This archive contains a python package that includes a class implementing
arithmetic coding and decoding. This implementation is not intended to be
the best, fastest, smallest, or any other performance related adjective.
More information on Arithmetic encoding may be found at:
http://michael.dipperstein.com/arithmetic
http://www.datacompression.info/ArithmeticCoding.shtml


License
ArithmeticCode is licensed under the GNU General Public License v3. See COPYING
for full license text.


Files
__init__.py - Python package initializtion code for bitfile.
arcode.py - File containing a Class implementing the arithmetic encoding and decoding algorithms.
COPYING - GNU General Public License v3
README - Package documentation
sample.py - Sample usage.
setup.py - distutils setup file.


Installing
This package is dependent on the BitFile package. A current version may be
obtained from the Python Package Index (http://pypi.python.org/) or
http://michael.dipperstein.com/bitlibs/
Install the BitFile package prior to installing this package.
This package uses distutils. The package may be installed with the following
command:
python setup.py install


Usage
arcode.py is fully documented with docstrings. Use your favorite tool for
generating documentation from docstrings.
arcode.py also contains a simple unit test, which may be performed when the
package is executed with the following command:
python arcode.py
sample.py demonstrates usage of the ArithmaticCode methods for encoding and
decoding files.
The following commands will encode a file:
import arcode:
ar = arcode.ArithmeticCode(use_static_model)
ar.encode_file(input_file, output_file)
Where input_file and output_file are the names of the file to be encoded and
file that will contain the results of the encoding.
The following commands will decode a file:
import arcode:
ar = arcode.ArithmeticCode(use_static_model)
ar.decode_file(input_file, output_file)
Where input_file and output_file are the names of the file to be decoded and
file that will contain the results of the decoding.


History

08/06/10 - Initial release



ToDo

Add/Verify support for Python 3.x.
Add/Verify support for file-like objects.