lossless-compression's Introduction
#######Known Issue: # When I run this program on my local machine, Mac OSX 10.10, Xcode 6.1.1 and g++ 4.2.1 # the adaptive huffman encoder will produce error output file, with size larger than the expected ones. # It will only produce the correct output on the first run after a new compile. # However, this problem is not existing on Nunki server, so I do all the test and record the result on Nunki. # I can also run the program without any problem on my mac desktop, so I assume the problem is about the compiler or # environment on my laptop only. If you run the program with any issue on your local machine, please run it on Nunki #######Compile and batch run instructions: # For compiling the program, cd to the directory of this README file and use < make -f README/gmake -f README > to compile the program # A instruction on execution parameters format will be shown # Follow the instruction for single run of certain algorithm and inpout data # For batch run on all algorithms and input data # cd to /debug folder and use make -f RUN/gmake -f RUN to run the batch script #######Known issues # The run length and modified run length algoritms have some problem when running the decoding routines # The decoder will reach the EOF earlier than expected, but for the decoeded parts, the content is the same with the orginal one. # I have met the same issue on MTF transformation on my local machine, however it runs good on Nunki serve. But the RL and MRL will not # run perfectly on Nunki as well. I'm still debugging this part to see if I did anything wrong. compile: @echo "*compiling the program" g++ -c bitio.cpp g++ -c statistics.cpp g++ -c Huffman.cpp g++ -c shannon.cpp g++ -c adaptiveHuff.cpp g++ -c MTF.cpp g++ -c runLength.cpp g++ -c main.cpp g++ -o debug/lossless main.o Huffman.o shannon.o adaptiveHuff.o runLength.o MTF.o statistics.o bitio.o @echo "*Compile finished." @echo "*Instruction on excuting the program." @echo "*Executable program will be in the /debug folder" @echo "*Run the program with correct format and parameters" @echo "*For data statistics, follow the format below" @echo ">> ./lossless [filename]" @echo "*For Shannon-Fano, Huffman and Adaptive Huffman encoding, follow the format below" @echo ">> ./lossless encode [sf/hm/ah] [filename]" @echo "*For run length encoding and decoding, follow the format below" @echo ">> ./lossless [encode/decode] [rl/mrl/mtf] [filename]" @echo ">>Or cd to debug folder, use make -f RUN to execute the batch run"
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Environment
When I run this program on my local machine, Mac OSX 10.10, Xcode 6.1.1 and g++ 4.2.1
the adaptive huffman encoder will produce error output file, with size larger than the expected ones.
It will only produce the correct output on the first run after a new compile.
However, this problem is not existing on Nunki server, so I do all the test and record the result on Nunki.
I can also run the program without any problem on my mac desktop, so I assume the problem is about the compiler or
environment on my laptop only. If you run the program with any issue on your local machine, please run it on Nunki
Run length decoder wrong EOF
The run length and modified run length algoritms have some problem when running the decoding routines
The decoder will reach the EOF earlier than expected, but for the decoeded parts, the content is the same with the orginal one.
I have met the same issue on MTF transformation on my local machine, however it runs good on Nunki serve. But the RL and MRL will not
run perfectly on Nunki as well. I'm still debugging this part to see if I did anything wrong.
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