sle118 wrote: > Hello, > > I just finished installing squeezelite on a new arm based linaro system > and I am seeing a strange phenomenon. This is the 3rd arm based device > that I am building, but this time, I am getting accelerated playback and > everything has a higher pitch including singer's voice (kind of like > spinning a 33 1/3 rpm LP faster for those who remember that time). > > I am using dmix devices as hw and plughw devices were causing > squeezelite to have a very high CPU usage. > > Anyone else saw this? > > For the record, here is the output of the debug > [15:42:48.371394] output_init:1375 init output > [15:42:48.373110] output_init:1378 outputbuf size: 3528000 > [15:42:48.373734] output_init:1410 requested alsa_buffer: 40 > alsa_period: 4 format: any mmap: 1 > [15:42:48.434800] output_init:1437 output: dmix:CARD=Set,DEV=0 maxrate: > 48000 > [15:42:48.435913] output_init:1445 unable to lock memory: Cannot > allocate memory > [15:42:48.446564] output_init:1468 unable to set output sched fifo: > Operation not permitted > [15:42:48.453560] output_thread:635 open output device: > dmix:CARD=Set,DEV=0 > [15:42:48.475001] alsa_open:270 opened device dmix:CARD=Set,DEV=0 using > format: S16_LE sample rate: 44100 mmap: 1 > [15:42:48.476237] alsa_open:335 buffer: 40 period: 4 -> buffer size: > 4096 period size: 1024 > [15:42:48.484837] output_flush:1482 flush output buffer > [15:42:48.488685] output_flush:1482 flush output buffer > > [update] > Interestingly, I tried a different USB sound card and Squeezelite didn't > use as much CPU on plughw AND didn't have a pitch issue. > > This seems to be pointing to an issue with the usb sound device I was > using. I'll try a different player and see if I get the same issue. > > [update] > I also found that the position of the (cheap) sound card on the (cheap) > usb hub would either result in stuttering/cutting sound or with clean > sound. go figure. now that I have found a stable setup, I think I'll > glue it all together :)
I also had the fast-playback issue with using a dmix device. Using option '-u X' resamples the audio to the max supported by the card, which fixes the issue. ------------------------------------------------------------------------ cooppw02's Profile: http://forums.slimdevices.com/member.php?userid=16712 View this thread: http://forums.slimdevices.com/showthread.php?t=97046 _______________________________________________ unix mailing list unix@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/unix
