giuliomoro
commented
8 years ago It is due to the fact that, in the libsndfile docs: http://www.mega-nerd.com/libsndfile/api.html#open
When opening a file for read, the format field should be set to zero before calling sf_open(). The only exception to this is the case of RAW files where the caller has to set the samplerate, channels and format fields to valid values. All other fields of the structure are filled in by the library.
SO, sfopen.format needs to be initialized to zero.
despite the file is actually there where it looks for it (so maybe it is an error while reading it)!