DecodeAudio

• Folder structured:

  Name	Description
  DecodeAudio	[ Root Directory]
  |____DecodeAudio	[ Contains Command Line Interface and Library ]
  |____DecodeaudioCLI	[ Command Line Interface ]
  |____DecodeAudioLib	[ DecodeAudio library ]
  |____ProblemStatement	[ Audio files and corresponding decoded message and bit stream message for testing. ]
  |____test	[ Contains all the tests written for the library. ]
  |____ThirdParty	[ Contains all the third party libraries used. ]
  |____dr_libs	[ Third party library used for reading wave files. ]
  |____googletest	[ Google test library for writing the test case. ]

• Third-party framework used:

  Tool	Purpose	Link
  Google Test	For Testing	https://github.com/google/googletest
  Dr_libs	For reading from wav files.	https://github.com/mackron/dr_libs

• Steps for building and running:

  • Install cmake

    apt-get install cmake

  • Creating the build directory

    mkdir build
    cd build

  • Building the project.

    cmake .. -G "Unix Makefiles"
    cmake --build .

  • Running the Command line interface. CLI accepts three arguments

    Argement	Description
    --audio "Audio file"	Audio file to decode
    --channel positive_number	Audio channel to decode in audio file.
    --threshold positive_number	Sample correction to find the encoded message. Ideally this should be 0 but in distorted audio file it can be about 3 - 10 depending on the distortion.

    cd DecodeAudio/DecodeAudioCLI/
    ./DecodeAudio --audio file_1.wav

    or

    cd DecodeAudio/DecodeAudioCLI/
    ./DecodeAudio --audio file_1.wav --channel 0

    or

    cd DecodeAudio/DecodeAudioCLI/
    $ ./DecodeAudio --audio file_1.wav --channel 0 --threshold 4

  • Running the google test (inside the build folder)

    ctest

  • Running the specific google test (inside the build folder)

    cd test/DecodeAudioLibTests
    ./DecodeAudioLibTests