On Mon, 02 Jul 2018 16:53:06 +0200, <twischer@xxxxxxxxxxxxxx> wrote: > > From: Timo Wischer <twischer@xxxxxxxxxxxxxx> > > Without this commit the following intervals [x y), (x y) were be > replaced to (y-1 y) by snd_interval_refine_last(). This was also done if > y-1 is part of the previous interval. > With this changes it will be replaced with [y-1 y) in case of y-1 is > part of the previous interval. A similar behavior will be used for > snd_interval_refine_first(). > > This solves the issue reported here: > https://bugzilla.opensuse.org/show_bug.cgi?id=1033179 > and work arounded with commit > e736715 ("pcm: dmix: Disable var_periodsize as default"). > > I am able to reproduce the issue with a simplified aplay use case using > the following configuration: > pcm_slave.adr3_tdm_8ch { > pcm { > type hw > card "Loopback" > device 0 > } > rate 48000 > period_size 128 > buffer_size 1024 > channels 2 > } > > pcm.dshare_Playback_3 { > type dmix > ipc_key 600 > ipc_perm 0660 > ipc_gid audio > var_periodsize true > slave adr3_tdm_8ch > } > > pcm.AdevAcousticoutSpeech { > type rate > slave.pcm dshare_Playback_3 > slave.rate 48000 > } > > $ modprobe snd_aloop > $ aplay -v --period-size=352 -c2 -fS16_LE -r22500 -DAdevAcousticoutSpeech /dev/urandom > ... > Rule 9 (0xffff91d1f230): PERIODS=(0 2) -> NONE BUFFER_SIZE=480 PERIOD_SIZE=[240 240] > refine_soft 'AdevAcousticoutSpeech' (end--22) > ... > aplay: ../../alsa-utils-1.1.5/aplay/aplay.c:1390: set_params: Assertion `err >= 0' failed. > Aborted by signal Aborted... > > The following stack trace shows where the -EINVAL will be thrown: > __snd_pcm_hw_params_set_period_size_near() > snd1_pcm_hw_param_set_near() > snd1_pcm_hw_param_set_last() > snd1_pcm_hw_refine_slave() > snd1_pcm_hw_refine_soft() > snd_pcm_hw_rule_div() > snd1_interval_refine() > > This issue exists due to PERIODS does not include 2 > Rule 9 (0xffff91d1f230): PERIODS=(0 9) -> (0 2) BUFFER_SIZE=[120 480] > PERIOD_SIZE=(240 241) > because of an invalid integer inverval of PERIOD_SIZE of (240 241). > This interval is set by snd_interval_refine_last(). > > Signed-off-by: Timo Wischer <twischer@xxxxxxxxxxxxxx> Thanks for spotting this bug. Applied now. We need the similar fix in the kernel code, too... Takashi _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
