Re: [Jackit-devel] [linux-audio-user] JACK samplerate stuck at 48000

From: Paul Davis <paul@email-addr-hidden>
Date: Tue Jun 20 2006 - 21:37:26 EEST

On Tue, 2006-06-20 at 20:27 +0200, Florian Paul Schmidt wrote:
> On Tue, 20 Jun 2006 13:29:18 -0400
> Lee Revell <rlrevell@email-addr-hidden-job.com> wrote:
>
> > On Tue, 2006-06-20 at 10:24 -0700, Mark Knecht wrote:
> > > Many built-in/inexpensive sound cards are stuck at 48K. Possibly this
> > > one is also?
> > >
> >
> > It's still a bug for JACK not to report any error.
> >
> > Does aplay report any errors with a 44100Hz file?
>
> Hmm, is this it:
>
> Index: drivers/alsa/alsa_driver.c
> ===================================================================
> --- drivers/alsa/alsa_driver.c (revision 976)
> +++ drivers/alsa/alsa_driver.c (working copy)
> @@ -445,13 +445,13 @@
> frame_rate = driver->frame_rate ;
> err = snd_pcm_hw_params_set_rate_near (handle, hw_params,
> &frame_rate, NULL) ;
> - driver->frame_rate = frame_rate ;
> - if (err < 0) {
> + if (err < 0 || (driver->frame_rate != frame_rate)) {

no, that doesn't work.

the lack of any "retval != requested_val" test was changed a year or two
back, on purpose. if we want to test this, the test has to be flexible:
some h/w will report as real rate of 44099 rather than 44100.
Received on Wed Jun 21 04:15:05 2006

This archive was generated by hypermail 2.1.8 : Wed Jun 21 2006 - 04:15:05 EEST