How to organize the processing of a large file?

Question

OOP

It is required to write several algorithms that process WAV files.
The files are about 100 MB in size, so I don't want to load them entirely into memory.
What abstraction should be given to algorithms for accessing signal samples? I'm asking in terms of downloading a file. Define something like an iterator by counts?

Answer 1

The easiest way is to use memory-mapped files, they have already thought about everything for you.

Answer 2

mmap (platform dependent) or reading the file in chunks, if the algorithm allows.