Linux AudioEngine testers - Linux only

Hi,

HD audio pass-through is not working for me at least, DTS-MA gives no sound and TrueHD is just noise.

Had a similar issue when testing cbxbiker61's HD audio pass-through branch, he had to add a "maxbandwidth" limiter otherwise things didn't work.

Intel HD3000 (Core i3 540).

@Forsaken - can you provide details of this bandwidth limiter?

(2012-04-27 19:43)gnif Wrote:  @Forsaken - can you provide details of this bandwidth limiter?

It's here: http://forum.xbmc.org/showthread.php?tid...#pid954404

It's the latest commit in his git.

Hey everybody,

I wanted to try the AudioEngine branch for quite some time now and today I finally had some spare time to try out a shitload of testfiles. ;-) So far I'm very impressed with what you guys have archieved here, mad props to gnif and DDDamian for keeping up this complex work making XBMC even better!

My Setup:
Nvidia GT430 Card, Ubuntu 11.10 x86, Nvidia 180 Drivers, Denon 4310

Successfully tested (at least 2 different files for each format):
--
Dolby True HD 5.1
Dolby True HD 7.1
DTS-HD HR 7.1
DTS-HD MA 5.1
DTS-HD MA 7.1
FLAC Stereo 96kHz
FLAC Stereo 192kHz
FLAC 5.1 96kHz

All played flawlessly, no stuttering, no drops and no sync/signal loss.


I had problems playing
--
Dolby Digital Plus (DD+) 7.1 (tried two files, both stutter/video plays *very* slow and no audio output at all). I'm not even sure if that format is used anywhere, but I had two files to test. Debug log playing both DD+ 7.1 files can be found here: http://paste2.org/p/1997876

DTS-HD MA 5.1 Terminator Demo (stuttering/slow playing, distorted video; stuttering audio that stop later on). Full debug log can be found here: http://paste2.org/p/1997892 and the Demo/Sample can be downloaded from http://www.trailerz.demo-world.eu/hd/hd_....part1.rar and http://www.trailerz.demo-world.eu/hd/hd_....part2.rar

All the files I tested were downloaded from http://www.demo-world.eu/trailers/high-d...ailers.php excluding the FLAC files, I found those on another site hosting a few High-Res SACD conversions: http://www.2l.no/hires/index.html

Apart from the sample/demo files I tried Tron: Legacy and the LOTR Trilogy for a nice DTS-HD MA experience - both kick some serious a$$ soundwise! ;-)

Hope this feedback helps in a way and thanks again for bringing XBMC's audio output to the HD age.

I updated to the latest revision from gnif's branch but I'm still having problems with FLAC audio (decoded to LPCM). The following is a list of what works and what doesn't:

FLAC 2.0 16-bit/44.1KHz: OK
FLAC 2.0 24-bit/88.2Khz: OK
FLAC 5.1 24-bit/48Khz: OK
FLAC 5.1 24-bit/96KHz: Crashes (either immediately or after about 0.5 seconds of audio)

I did some experimenting and it seems like 24-bit/96KHz files play just fine if I set the speaker configuration to 2.0 (in XBMC). Raising it from that point crashes XBMC immediately. Here is a full debug log: http://pastebin.com/PG04AuKT and here's the crash log http://pastebin.com/skgfSU8N. Note that the same underruns happen every now and then when playing 24-bit/48KHz files as well, although at least they don't crash the whole thing.

Is there some buffer setting I can change somewhere? Is there anything else I can provide to help debug this issue?

Edit: added crash log
Edit 2: Note that I'm using DVDPlayer to play FLACs (had to do it before to get 5.1 output properly) but the crash also happens when using PAPlayer.
Edit 3: The 5.1 FLAC issue has been fixed! I suspect this is the commit that did the trick: https://github.com/gnif/xbmc/commit/5898...de70faa7b4

So there's essentially no hope for AMD APU or Fusion users out there that would like to have an XBMC appliance like with XBMCbuntu or OpenELEC? I'm really trying to get away from having a full OS just to watch some movies w/HD audio.

@Salem - AE works on all platforms XBMC master works on + FreeBSD.

(2012-04-29 17:17)Salem Wrote:  So there's essentially no hope for AMD APU or Fusion users out there that would like to have an XBMC appliance like with XBMCbuntu or OpenELEC? I'm really trying to get away from having a full OS just to watch some movies w/HD audio.

(2012-04-30 12:43)gnif Wrote:  @Salem - AE works on all platforms XBMC master works on + FreeBSD.

> 2 channel output on AMD devices is contingent on AMD either providing the necessary information for the OSS driver to implement the feature, someone reverse-engineering it, or AMD themselves implementing it into fglrx. Last time I checked none of this has happened.

(2012-04-30 14:52)wingrunr21 Wrote:  

(2012-04-29 17:17)Salem Wrote:  So there's essentially no hope for AMD APU or Fusion users out there that would like to have an XBMC appliance like with XBMCbuntu or OpenELEC? I'm really trying to get away from having a full OS just to watch some movies w/HD audio.

(2012-04-30 12:43)gnif Wrote:  @Salem - AE works on all platforms XBMC master works on + FreeBSD.

> 2 channel output on AMD devices is contingent on AMD either providing the necessary information for the OSS driver to implement the feature, someone reverse-engineering it, or AMD themselves implementing it into fglrx. Last time I checked none of this has happened.

I figured. I had followed your Phoronix link and then chased a few other threads there. That's disappointing. I suppose I'll try using XBMC as a shell in Win7 for now. Thanks.

just complied this afternoon to see what progress had been made. like some other people i did have to downgrade from 295.xx to 290.10 in order to get sound working. i have to say i was most pleasantly surprised with my results. ~6 months ago when i was first playing around with the ae branch i wasn't able to get the dts-hd test samples working with my g210 and pioneer vsx-1020. even trying with new fermi based cards gave me problems so i assumed there was something funky about my receiver. yet somehow through the magic of gnif dts-hd is now working in ae

i only had a chance to test briefly but dts-hd and truehd are both working for me. as is auto-selecting the right device. i did notice some pretty massive stuttering when starting a movie with dts-hd, but it went away after ~5 seconds or so. i did have a quick dropout with dts-hd in the 5 minutes or so i played with it. the truehd movie i tried didn't have any stuttering but seemed to have more frequent dropouts. just in case you don't already have enough of them i've uploaded a log here: http://pastebin.com/U6EBUPv7

keep up the great work