I'll check HiFiBerry's site and see if I can get it. On Mar 29, 2015 2:48 AM, "Raymond Yau" <superquad.vortex2 at gmail.com> wrote: > This is my alsa-info.sh > > Your ALSA information is located at > http://www.alsa-project.org/db/?f=b0fa712883998f34f799364e4240cc8c708eba5d > > Does this help? > > > This is my alsa-info.sh > > > Your ALSA information is located at > http://www.alsa-project.org/db/?f=b0fa712883998f34f799364e4240cc8c708eba5d > > > Does this help? > > do you have the source code of the audio driver ??? > > > > diff --git a/src/modules/alsa/alsa-util.c b/src/modules/alsa/alsa-util.c > index bb79e71..e36c2a7 100644 > --- a/src/modules/alsa/alsa-util.c > +++ b/src/modules/alsa/alsa-util.c > @@ -481,7 +481,7 @@ int pa_alsa_set_sw_params(snd_pcm_t *pcm, > snd_pcm_uframes_t avail_min, bool peri > return err; > } > > - if ((err = snd_pcm_sw_params_set_start_threshold(pcm, swparams, > (snd_pcm_uframes_t) -1)) < 0) { > + if ((err = snd_pcm_sw_params_set_start_threshold(pcm, swparams, > boundary)) < 0) { > pa_log_warn("Unable to set start threshold: %s\n", > pa_alsa_strerror(err)); > return err; > } > > > >> > Okay, on someone's recommendation, I removed the existing version of >> pulseaudio (2, I think) and compiled a fresh one (5.99.3). Pulse seems to >> attempt to use the hifiberry, but I still get the following error: >> > >> > I: [alsa-sink-HiFiBerry DAC+ HiFi pcm512x-hifi-0] alsa-sink.c: Starting >> playback. >> > I: [alsa-sink-HiFiBerry DAC+ HiFi pcm512x-hifi-0] (alsa-lib)pcm_hw.c: >> SNDRV_PCM_IOCTL_START failed (-77) >> > >> > What exactly does this mean? Sorry for the newbie questions. >> > >> >> You have to post output of alsa-info.sh >> >> The error occur when pcm state is running when pulseaudio call >> snd_pcm_start() >> >> Do you know where to find the source code of your audio driver, seem not >> in >> https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/tree/sound >> >> > D: [pulseaudio] alsa-util.c: start_threshold : -1 >> >> It is because pulseaudio set start_threshold to -1 , this mean first >> snd_pcm_write() automatically trigger playback to start since >> >> frames written > start_threshold >> >> > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.freedesktop.org/archives/pulseaudio-discuss/attachments/20150329/02131a3c/attachment.html>
