On Fri, 05 Mar 2004 10:01:28 +0100 (CET) Giuliano Pochini <[EMAIL PROTECTED]> wrote:
> On the Amiga :) it was simple. You only need to tell the hw > to play a block of data at given sample rate, volume, etc. > But most of the cards can't do that. I think one good solution > is to run an "sfx mixer" in a separate thread. That mixer > must provide emulation code if the hardware lacks some of the > required features, at least the basic ones. Device dependent > stuff is not a good idea IMHO. > I am writing a custom sound lib for us to develop games on Linux, I have tried to make it as simple as possible, (much like what te Amiga did actually), ao you can just play a sound using an assingned number for each sound, a rate and a volume. I use my own software mixing to provide 8 sfx channels, and mix them into a single PCM channel, at the desired rates and volumes. Software mixing hardly uses any CPU time at all (if you can write decent code) and i can't understand why you NEED hardware mixing for your application (games)... ------------------------------------------------------- This SF.Net email is sponsored by: IBM Linux Tutorials Free Linux tutorial presented by Daniel Robbins, President and CEO of GenToo technologies. Learn everything from fundamentals to system administration.http://ads.osdn.com/?ad_id=1470&alloc_id=3638&op=click _______________________________________________ Alsa-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-devel
