Re: [ts-7000] playsound

[Larry <>]

Thanks Michael
  Just a guess, but I think the latency is on the order of 1/2 second.
Since I'm playing the same sound over and over, a key click to ack the user's touch it should
be much more efficient to read the sound file into a buffer at startup, include the code in my app so the loader doesn't have to run each time, etc.
I'd also like the button graphic do something to indicate it was pushed too, like maybe a quick DOWN_BOX,  UP_BOX transition.
I'm looking into that right now.
Larry


Michael Schmidt wrote:

leaton wrote:
> I'm doing work on the ts-7390 and want to do audible feedback for
> touchscreen buttons. Currently I'm doing fork() and exec() system
> calls to generate sound using the Technologic playsound utility.
> This is very inefficient and I'd like to speed it up.

What kind of latency/overhead are you seeing?

> Anyone know where I can get the source for Technologic's playsound
> utility?

ftp://ftp.embeddedARM.com/ts-arm-sbc/ts-7350-linux/sources/playsound.c

> Thanks
> Larry

______ Best Regards,
|__ __/ Michael Schmidt
|| Software Engineer
||echnologic Systems (EmbeddedARM.com)
|| (480) 16525 East Laser Drive
|/ 837-5200 Fountain Hills, AZ 85268
http://oz.embeddedarm.com/~michael

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