Mostly, this will depend on the USB protocol and whatever library you're using to read the data.

If you're using USB::LibUSB to read from the device, you will have to reassemble the USB packets into the audio stream. You want to have read USB in a NutShell.

I found many Stackoverflow questions without replies, but https://stackoverflow.com/questions/47229082|USB Control Transfer to get AudioStreaming Descriptor with libusb] has some code that suggests that it might actually work.

Personally, I think you'll be better off using the audio capabilities of your OS to read the (decoded) audio stream, but depending on the setup, it may be desireable to do it all yourself instead of fighting Pulse Audio and/or ALSA.

In the opposite direction, there is libmaru, which is an userspace driver to output audio to an USB device.

In reply to Re: What can I do with an “IOUSBHostDevice”? by Corion
in thread What can I do with an “IOUSBHostDevice”? by SkinBlues

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.