Android phones and USB DACs - Page 7

Quote:

Originally Posted by DanBa 

There is likely another possibility to fix some SGS3 non-interworking issue: use the USB core driver of the Archos G9 tablet.

 

The Archos G9 tablet can interwork with the FiiO E17.

http://www.head-fi.org/t/595071/android-phones-and-usb-dacs-how-to-increase-the-issues-priority-with-google/30#post_8299494

 

The SGS3 can’t interwork with the FiiO E17, even via a powered USB hub.

http://www.head-fi.org/t/595071/android-phones-and-usb-dacs-how-to-increase-the-issues-priority-with-google/60#post_8430562

 

And drivers/usb/core/message.c of Archos G9 and of SGS3 are different, slightly different.

https://gitorious.org/archos/archos-gpl-gen9-kernel-ics/blobs/master/drivers/usb/core/message.c

https://github.com/sgs3/GT-I9300_Kernel/blob/master/drivers/usb/core/message.c

 

Some XDA developer could build and try a modded Android Linux kernel including the USB core driver of the Archos G9 tablet.

 

 

Dmesg log output and lsusb log output could detail what is going on at the kernel level.

http://comments.gmane.org/gmane.linux.alsa.devel/96433

 

dmesg:

https://play.google.com/store/search?q=dmesg

 

lsusb:

https://play.google.com/store/search?q=lsusb

Possible, or you SGS3 guys can tell samsung directly? if no response then go the modded root.

"Android for developers...". "Android that allows hardware vendors to...."

Will we ever see the real thing? 

"We [HRT] are about to launch a beta program for Android products and if anyone here is interested, they can contact me for more information on the program. We are offering hardware at no cost to a limited number of participants."

http://androidforums.com/4581051-post10.html

Quote:

Originally Posted by DanBa 

"Android 4.1 for Developers

New Media Capabilities

USB Audio

USB audio output support allows hardware vendors to build hardware such as audio docks that interface with Android devices."

http://developer.android.com/about/versions/jelly-bean.html#media

Well done to everyone! Especially you

Quote:

Originally Posted by NZtechfreak 

 

I've contacted them, figure I also deserve to participate in the beta :)

me too

Quote:

Originally Posted by DanBa 

"Android 4.1 for Developers

New Media Capabilities

USB Audio

USB audio output support allows hardware vendors to build hardware such as audio docks that interface with Android devices."

http://developer.android.com/about/versions/jelly-bean.html#media

So does this mean that my Nexus 7 will play nicely with a USB DAC straight out the box, or just that the functionality is there for devs to work with?

If words make sense, your Nexus 7 will very likely play nicely with some USB DAC straight out the box, because the ALSA USB audio stack was present in the Android source code before Android 4.1 Jelly Bean.

GREAT work everyone!  Really excited for this!!

I wish I had a compatible droid device (and headfi knowledge) to be a potential beta tester. Also, the last few posts are quite promising. DanBa, thanks for all the useful info and links. The combinations/tests which you posted on the androidforums thread about usb audio was a great read too.

I have rooted Galaxy Note. I love installing roms on it and soon (whenever developers release) we will have jelly bean on our devices. So I was wondering, does that mean I can use usb audio? Because I almost bought FiiO E17 to use with my ICS Galaxy Note but I was glad to have read that ICS still did not support usb dac.

Quote:

Originally Posted by WiR3D 


Actually this means it leaves it up to the manufacturer, so no not bad news, great news. Because that way we can have extended batteries built into dacs like the vamp
Sent from my HTC HD2 using Tapatalk 2

So theoretically I'll have no problem using my E17 with the Nexus 7 with the appropriate adaptors?