Implement c4ids

[mrjoshuak]

Implement c4ids to satisfy the tests created in issue #2.

There is a file already in the project that implements c4ids that can be used as reference.

[mjaganathan]

Joshua, could you brief on this issue. I hope you had seen the earlier issues there for review.

[mrjoshuak]

See #2 for notes on pushing updates to GitHub.

[mjaganathan]

Joshua, as per our understanding on description provided here we have committed the fix to repo, please review & provide comments.

[mrjoshuak]

The basic c4 functionality is there (since it was already), but the tests don't appear to be running properly. I made some simple changes to get the tests to run but the tests don't pass. The id of test.mp4 file is:

c416bf4pkWQSfUfHizjSDzdtMqNLr93GWUQ1Pozu2gFqKyrfvXkge59yR4DHpQ6NodDHT48VwXMEXyfhigFXqFWUe2

But the tests are not updated with that test value so they don't pass.

You should use the reference implementation to discover the c4id of any file prior to testing. You can download the latest build from https://cccc.io/. Or build and run it from the golang source.

Also you needn't use a big (7.8M) mp4 file for testing. Any file will do. For example the c4id of a empty file is: c459CSJESBh38BxDwwxNFKTXE4cC9HASGe3bhtN6z58GbwLqpCyRaKyZSvBAvTdF5NpSTPdUMH4hHRJ75geLsB1Sfs

The c4id of your username mjaganathan is: c44NU5NWmBVRNGUzerAUKu9D8N8GnNGJjD2sWC92mjQU35ducJ4dYQvpQaDjh37kwBs6w8KP8Zg5iBLQtV5fGvNKu5

Anything of any size can be identified.