On 03/04/2004, at 4:41 PM, Jaroslav Kysela wrote:
On Fri, 2 Apr 2004, Tim Hollingsworth wrote:
Thanks for your help so far Jaroslav.
I have taken another look at my project and now it's behaving differently! It still won't go down to a period size of 128.
I have downloaded the example sine wave generator. It works with the default settings, which give a period size of 4410. If I change the period time using the command line, it will successfully go down to 441/10000us. Any further and I get this error:
ALSA lib pcm.c:824:(snd_pcm_sw_params) snd_pcm_sw_params: params->avail_min problem for start_threshold Unable to set sw params for playback: Invalid argument Setting of swparams failed: Invalid argument
Fixed in CVS.
OK cool that error has gone now. Back to newbie period size problems (*groan*). The target system has a VIA VT8233 sound chip. I tried the sine generator on another system which has a soundblaster live, and it will indeed take very low period sizes. As you said.
Can I configure the VIA chip to take the period size I want, or is it a hardware limitation? Which settings do I mess with?
TIA Tim
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