Hi, instead of Wine Weekly News (WWN, any taker?) you get monthly audio news.
The surprising thing is: it looks like most audio bugs remaining in bugzilla are from the pre-mmdevapi era and have not been updated since mid-2011. - Using devices other than "default" (dmix or pulse): #29294 no sound with ALSA loopback -- are they duplicates of each other #28781 loopback to Jack -- or is one about DSound only? We have are several issues about crackling sound: - One definitely is caused by CreateTimerQueue which is not regular enough or does not deliver 10ms, but 12ms callbacks. This is in #28723 which includes a work-around in comment #130 That may affect the Solaris machine on test.winehq.org too. - One is caused by a mmdevapi design error: the audio buffer we use is simply too small, and Linux can't bear a regular 10ms rate. Things got worse since the introduction of the Completely Fair Scheduler. It can't even guarantee a regular 50ms one. There's a need for a much larger buffer. That's why wine < 1.3.25 is giving steadier sound. #29531 may be caused by this. - Mac OS X 10.5.8 crackles constantly with dlls/mmdevapi/tests/render I'd like somebody with 10.6 or .7 to perform the interactive test. rm -f render.ok; WINETEST_INTERACTIVE=1 make render.ok - Lastly, there's PulseAudio #28856 among others I don't understand why I couldn't find bugs in PA's bugzilla, so I wrote some: - https://bugs.freedesktop.org/show_bug.cgi?id=46296 About the need to restart the PA server from time to time - https://bugs.freedesktop.org/show_bug.cgi?id=46297 PA's huge buffering causes issues with winmm - https://bugs.freedesktop.org/show_bug.cgi?id=46412 How to obtain PA's typical 44100 rate? Feel free to contribute if you know apps outside Wine with similar issues. Surprisingly, users have reported improvements in the latest wine-1.4rcX even when nothing changed, but also mentioned updates on the PA and alsa_plugins side. Perhaps that improved the situation. I was pleased to see Wine's testsuite help find bugs in Pulse: http://lists.freedesktop.org/archives/pulseaudio-discuss/2012-February/012825.html There are issues not always associated with a bug entry: - #29472 comment #12 DSound GetDevicePosition is not how it should be - Check OSS4 with and without vmix #28056 #28790 - winmm handling huge latency (such as PA's) & when to send notifications - Issues with microphone capture? - DSound mixing and buffer sizes & padding vs. GetPosition - Deal with intermittent errors from ALSA etc. in mmdevapi, winmm and dsound - Device enumeration and PA preventing access to the underlying device Is this known to cause no sound in an app (or only in our wave tests?) - various missing trailing sound with DSound #21209 - #29369 strange issue involving PA and perhaps messaging - misc. losing sound: #28319 #25164 #28770 - lead-out needed with dmix - Use lock-less design to reduce contention, cf. #29531, comment #7 - multi-channel, 5:1 etc. in mmdevapi and DSound - Bugs in the quartz or winegstreamer area that I don't have on my radar Of course there are more bugs than this. Regards, Jörg Höhle
