2010/7/20 Tanu Kaskinen <tanuk at iki.fi>: > On Fri, 2010-07-16 at 23:22 +0200, Maarten Bosmans wrote: >> Hi, >> >> PulseAudio from git master crashes when I play a sound to a combined >> sink of two 96000 Hz sinks. It does not happen if the slave sinks are >> set to 48kHz. Playing directly two one of the slaves also works. >> > [snip] > > Now, is it somehow possible that the rate difference is actually that > huge? I don't think so, unless there's a bug in module-combine. > > Could you check with gdb what are the values of r->i_ss.rate and > r->o_ss.rate when the crash happens? No, that's not it, they're both the same, 96000. (Attached is a snippet of gdb output, in which the structure r is printed) The source file (input stream for combined sink) is 44100 Hz, the slave sinks are at 96000 Hz. I tried specifying the samplerate for the combined sink. The lower the rate of the combined sink, the smaller the chance of the crash happening. For a rate < 40000 it seems to never crash. For about 42000-43000 it sometimes crashes, mostly after more than 30 seconds of audio. For 44000-45000 it usually crashes after 1-2 seconds and for higher samplerates it crashes every time after just a fraction of a second. What I further noticed is that the resampler for the stream from the combined sinks to the slave alsa sinks is always PA_RESAMPLER_TRIVIAL. Is that correct, even for a stream from, say, 41000 to 96000? I would think that for such a case something like PA_RESAMPLER_SPEEX_FLOAT would be necessary. > -- > Tanu Kaskinen > Thanks for thinking along in debugging this, Maarten -------------- next part -------------- A non-text attachment was scrubbed... Name: gdb.log Type: application/octet-stream Size: 4342 bytes Desc: not available URL: <http://lists.freedesktop.org/archives/pulseaudio-discuss/attachments/20100722/c45de84e/attachment.obj>
