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caudiooperating-systemportsinterrupt

How to read and play an audio file for my OS?

I am building a small OS. For that i wanted to play audio. I can use ports,interrupts. I have no restrictions as i am building an OS itself.

So how can i play an audio file using a C program. Please remember that I cannot and don't want to use any ready made library or so.

Solution

  • If you're building your own OS, you also need to care about the physical details of your audio hardware.

    Differences in hardware is why operating systems introduced the concept of the device driver.

    If your audio hardware is sound blaster compatible, have a look here:

    http://www.phatcode.net/res/243/files/sbhwpg.pdf

    There's an archive of lots of hardware-near audio code here (various hardware platforms):

    http://www.dcee.net/Files/Programm/Sound/

    Here's a chapter on programming sound devices:

    http://www.oreilly.de/catalog/multilinux/excerpt/ch14-01.htm