ubuntu-phone team mailing list archive

[Ricardo Salveti de Araujo <ricardo.salveti@xxxxxxxxxxxxx>]

On Mon, Jun 23, 2014 at 11:17 AM, kohelet ml <kohelet@xxxxxxxxx> wrote:
> Ricardo,
>
> In what way does this change affect porting? In my efforts to port to the
> Xperia Z Ultra I ran into problems at the UCM mixer files step as
> documentation on what needs to be done in that step is lacking....

With this module you don't need to change and know anything about UCM.
If the HAL is in proper shape (not breaking abi and etc), it should
just work.

If not, we might need some device specifics in there, but easy to add
once we have bugs.

Thanks,

Ricardo

> Thanks,
> Kohelet
>
> On Jun 23, 2014 12:31 AM, "Ricardo Salveti de Araujo"
> <ricardo.salveti@xxxxxxxxxxxxx> wrote:
>>
>> Hi,
>>
>> As discussed previously, we decided to change our audio stack to use
>> the Android HAL driver instead of using ALSA + UCM directly. This
>> decision was basically because not every device supports and
>> implements a proper Alsa driver, making our stack supported mostly by
>> Nexus devices (because the default Audio HAL uses ALSA).
>>
>> Luckily Jolla created a project that implements a pulseaudio module
>> that talks to the Android Audio HAL (over libhybris), exposing
>> sink/source elements and media/call profiles. As we also use
>> Pulseaudio as our default audio sound server, we decided to integrate
>> this element and include it by default on touch. In case you want to
>> know more about the original project, the code is available at
>> https://github.com/mer-hybris/pulseaudio-modules-droid.
>>
>> The integration is currently done, and I'd like to ask for help
>> testing and validating the silo, as this changes a critical part of
>> our system, and might effect voice calls and normal audio playback.
>>
>> You can find the packages at
>> https://launchpad.net/~ci-train-ppa-service/+archive/landing-018.
>>
>> To test the new audio stack:
>> - Install latest Ubuntu Touch on mako/manta/flo;
>> - Make the image writable (phablet-config writable-image);
>> - Add the silo 18 ppa:
>> $ sudo apt-add-repository ppa:ci-train-ppa-service/landing-018
>> $ sudo apt-get update
>> $ sudo apt-get dist-upgrade
>> $ sudo apt-get install pulseaudio-module-droid
>> - Reboot
>>
>> Please test normal audio playback, with speaker, wired headset,
>> bluetooth (a2dp), and voice call. Please let me know about any weird
>> behavior, specially when doing voice calls.
>>
>> I know we currently have a voice call quality issue, and from my tests
>> results this is still a problem even with this new module (voice call
>> with android is better than with ubuntu). Will spend some time this
>> week to better understand the issue, as it could be related with lack
>> of effects (echo/noise canceling).
>>
>> I didn't yet test this package with Nexus 5, but should hopefully fix
>> the audio issues we had with it as well.
>>
>> Thanks,
>> --
>> Ricardo Salveti de Araujo
>>
>> --
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-- 
Ricardo Salveti de Araujo