Hi, Alan
I reproduced this problems with speaker-test. The channels are wrong mapped.
It's strange that if use mplayer to run, it looks ok.
I'm looking this problems, and try to find the root cause.
Thanks
From: Alan Alan [mailto:alanwww1@gmail.com] Sent: Wednesday, June 03, 2009 4:00 PM To: Wei Ni Cc: Marek Vasut; alsa-devel@alsa-project.org; Peer Chen Subject: Re: ALSA patch Nvidia 8 channel hdmi audio
Hello Wei !
Thanks for replying. I tested it with speaker-test and xbmc babylon. Both had problems with channel mapping. I used this command:
speaker-test -Dhdmi -c6 or speaker-test -Dhdmi -c8
alternatively you could try
speaker-test -Dhw:0,3 -c6
I had to rund Xorg first and have the command from an xterm, becasue from a normal terminal it would not work. I think that is normal as a limitation of hdmi.
What about the support for 24bits 192khz sound ?
speaker-test -Dhdmi -c6 -r192000 does not work.
Thanks for working on this.
2009/6/3 Wei Ni wni@nvidia.com
Hi, Marek and Alan I'm a Nvidia engineer and develop this patch file.
I used mplayer to test. The channels are mapped good. Running mplayer -ao alsa:device=hw=0.3 6ch.wav
I tried to use speaker-test to test, but I can't get the hdmi device name. I used speaker-test -Dsurround51:NVidia -c6, the sound output from the analog jack. Which device name should I use?
I use aplay -l, it show **** List of PLAYBACK Hardware Devices **** card 0: NVidia [HDA NVidia], device 0: ALC1200 Analog [ALC1200 Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: NVidia [HDA NVidia], device 1: ALC1200 Digital [ALC1200 Digital] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: NVidia [HDA NVidia], device 3: NVIDIA HDMI [NVIDIA HDMI] Subdevices: 1/1 Subdevice #0: subdevice #0
Thanks Wei.
-----Original Message----- From: Marek Vasut [mailto:marek.vasut@gmail.com] Sent: Wednesday, June 03, 2009 8:01 AM To: Alan Alan Cc: alsa-devel@alsa-project.org; Wei Ni Subject: Re: ALSA patch Nvidia 8 channel hdmi audio
On Wednesday 03 of June 2009 00:30:04 Alan Alan wrote:
Thank's for the info. How can i contact him ?
He and alsa-devel mailing list are both in CC already, please preserve them there or fix your mailer.
2009/6/3 Marek Vasut marek.vasut@gmail.com
I'm not the author of the patch, CCing alsa-devel and the original author.
On Tuesday 02 of June 2009 23:58:26 Alan Alan wrote:
Hi Marek !
I just read your emailing with nvidia devs about alsa supporting 8
channel
lpcm over hdmi.
I checked it out an i have to tell it is working awsome, except
for a
few bugs:
The channels are wrong mapped. Running a speakertest -Dhdmi -c6
gives
the following result (first where it should sound) FL - FL C - RL FR - FR RR - LFE RL - C
The other thing i realized that playback is limited to 16 bits 48
khz.
I think the minimum which is supported by nvidia hardware is
24bits 96
(or 192) khz. Why not ?
Could you contact the devs as i don't know how to reach them.
ps.: Mybe my build methot was not 100% ok ? I used 1.020 Alsa with
the
oatched nvidia.c file. Anyway the amplifier shows multichannel
LPCM and
that's great news.
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