This is an old coding task for a Job Interview a few years ago. It was the following task:
The task is to open an MP3 file and output some data on that file. We've split this into a couple of stages, a basic starter set and a more advanced set
As a starter, print basic information on the file, this can include:
- File size
- Timestamps
- File flags (read only status)
- Any other helpful information about the file
For the more advanced information, you should calculate the number of frames, the sample rate and average bitrate for the audio contained in the file.
- Your solution should handle constant bitrate (CBR) MP3s.
- Your solution should handle variable bitrate (VBR) MP3s.
- You should not parse ID3v1/ID3v2 structures (although you can if you want to) but you will need to ensure you do not accidentally interpret these as part of the MP3.
- We have provided bitrates for MPEG 1 Layer III (you may see files in other formats; for the purposes of this task we are only looking at MPEG 1 Layer III).
- Your solution should be concise. Keep it simple!