[alsa-devel] HBR audio with intel HDA

[Anssi Hannula]

02.08.2013 16:11, Ashecrow kirjoitti:
> Hi Anssi,
> Thanks for your answer
> 
> Test on kernel 3.8 + non-pcm bit in AES0:
> aplay -D hdmi:CARD=PCH,DEV=0,AES0=0x06 -c8 -fs16_le -r192000 dts.spdif
> => same result: no signal

Hmh, OK.

> Test with a non spdif-encapsulated file extracted from blu ray which is 16 bits 8 channel 192 kHz :
> aplay -D hdmi:CARD=PCH,DEV=0,AES0=0x06 -c8 -fs16_le -r192000 dts.dts-hd.sample_track2_und.dts
> => I get a static noise and receiver shows PCM and 2 channels (front left and front right)

You can't output non-encapsulated audio directly, you need to
encapsulate it e.g. with ffmpeg:
ffmpeg -i file.dtshd -acodec copy -f spdif file.dtshd.spdif

> With kernel upgrade to 3.9: same result
> 
> 
> Note that I have tested with alsa* 1.025 and intel-hda driver included in kernel
> 
> Do you have any other idea?

You could try DEV=1 instead of DEV=0 (according to your log DEV=0 is
correct, though), and truehd (thd.spdif from ffmpeg samples).

If neither of those work, could you provide another alsa-info while
playing back using AES0=0x06 (with alsa debug enabled again)?



> Thanks
> 
> 
> Le 1 août 2013 à 18:37, Anssi Hannula a écrit :
> 
>> 01.08.2013 19:29, ashecrow42 at free.fr kirjoitti:
>>> Hi there,
>>
>> Hi!
>>
>>> I have troubles using HBR audio (DTS-HD and Dolby TrueHD). With every 
>>> test, I get no signal in the AV receiver. I have tested using a dts-hd 
>>> encapsulated in spdif sample file (found there 
>>> http://samples.mplayerhq.hu/hdmi/) and commands bellow
>>>
>>> - aplay -D hdmi devices
>>> - aplay -D hw devices
>>> - aplay -D plughw devices
>>
>> You need to set the non-pcm bit in AES0. Use e.g. "-D hdmi:AES0=0x06".
>>
>>> Note that I use ubuntu raring with 3.8 kernel that includes Xingchao's 
>>> HBR kernel patches.
>>>
>>>
>>> A. Configurations I have tested:
>>>
>>>
>>> - hda driver upgrade (alsa devel ubuntu team daily builds)
>>>
>>> - upgrade alsa-lib & alsa-utils (alsa-testing launchpad)
>>>
>>> - kernel upgrade to 3.9
>>
>> IIRC 3.9 (or newer) may indeed be needed since you have both hdmi and spdif.
>>
>>> - snd_hda_codec_realtek module backlist (to try to disable SPDIF) 
>>> /etc/modprobe.d/blacklist.conf
>>>
>>> - snd_hda_codec_realtek index = -2 in /etc/modprobe.d/alsa-base.conf
>>>
>>> - fresh new ubuntu raring install with no modifications at all: still 
>>> no signal
>>>
>>> B. Info:
>>>
>>> cat /proc/asound/card0/codec* | grep Codec
>>> Codec: Realtek ALC892
>>> Codec: Intel CougarPoint HDMI
>>>
>>> I use zotac ZBOX ID82 (intel HM65 chipset with hdmi and spdif)
>>>
>>> with alsa debug and alsa debug verbose enabled in kernel I got the 
>>> alsa-info.txt attached file produced on raring with no modification 
>>> while playing dts-hd sample file with command:
>>>
>>>
>>> aplay -D hdmi:CARD=PCH,DEV=0 -c8 -fs16_le -r192000 dts.spdif
>>
>> As per above you need to use
>> aplay -D hdmi:CARD=PCH,DEV=0,AES0=0x06 -c8 -fs16_le -r192000 dts.spdif
>>
>>>
>>> C. I add that:
>>>
>>> - In every test I have non HD audio protocols (DTS and dolby) working 
>>> well in the same configuration
>>>
>>> - I have tried with windows just to see if my hardware is broken and I 
>>> get DTS-HD audio with no problem
>>>
>>> - Takashi, I've read your HD-Audio.txt file and as far as I see, I have 
>>> no known error message in kernel log
>>>
>>>
>>> => I and Wingchao Wang have conclued that it is driver or codec 
>>> related. Can you help me please?
>>>
>>> Thanks a lot
>>> PS: sorry if you receive this email twice, I have sent it again as I 
>>> was not member of the list the first time.
>>
>>
>> -- 
>> Anssi Hannula
> 


-- 
Anssi Hannula