arithmetic-coding

• A codec that uses fast arithmetic coding with adaptive model and context for (ASCII) text file compression and decompression.
• The program uses fast arithmetic coding with an adaptive data model with context for the compression.
• It's made to compress text files with a 256 character alphabet (ASCII).

To build the project with g++ use:

1. build.bat
or
2. build.sh

The resulting executable file can be found in the "bin" folder.

Usage

The executable can be used through it's CLI as follows:

1. ArithmeticCodeCodec -c data_file_name compressed_file_name
2. ArithmeticCodeCodec -d compressed_file_name new_file_name

Testing

• In the "test" folder there are some input files for good and bad cases of compression and a large file.
• In the "test" folder there is also a "acc_test.bat" file with which tests can be run under windows on the provided input files showing the time for compression and decompression as well as the compression rate (input file / compressed file).
• To run the tests you must first put the resulting executable from the build in the "test" folder.