Go Challenge #1
This is a toy drum sequencer submitted for the first Go Challenge.
The challenge goal is to write a decoder for the drum pattern files in the fixtures directory and get the tests to pass. This is the code in decoder.go.
The encoder.go file contains an encoder to generate pattern files from a Pattern structure.
The player directory contains a program that uses libsndfile and portaudio to play pattern files using samples in wav format. It's a little rough around the edges because I had it in my head this was due on March 14, so there's a little more work that can be done!
The player can be built with go build, though it is expecting to find the
drum package under my path.
The player expects to find wav files in a directory passed through the -d option. It expects the wave files to be named "x.wav" where x is the track.Name. I've included some test patterns and samples. The samples are licensed under creative commons, found on ccmixter[1] (you can omit these from the GitHub repository).
An example run from the player directory:
$ ./player -d sounds/ test.splice test2.splice
This will sequence and loop test.splice then test2.splice forever.
This challenge was a lot of fun. While I have done some reverse engineering of binary formats before, I've never really done any kind of audio programming. I look forward to the future challenges!