[alsa-devel] USB Audio/ALSA

[Radoslaw Szkodzinski]

On Thu, Sep 12, 2013 at 6:33 PM, Daniel Mack <zonque at gmail.com> wrote:
> On 12.09.2013 05:30, Rajaram R wrote:
>> I am trying to bring up Android Accessory Audio in my Samsung Grand
>> mobile.. I am using a Linux PC for the same. The mobile re-enumerates in
>> AOA mode with an Audio interface. But when I play song, I see nothing on
>> the bus.  I can see an AOA audio device entry in /proc/asound/cards. The
>> mobile runs Android JB
>
> If the card is present in /proc/asound/cards, alsa detected it just
> fine, and you have to look at the Adroid sound system in order to find
> out why it's not used. Unfortunately, Android decided not to use any of
> the ALSA userspace code but reinvented the wheel, for which simple tools
> like aplay are unavailable.

Actually quite a few devices come with either tinyalsa or full alsa-lib.

Qualcomm-based ones are the exception.

-- 
Radosław Szkodziński