Thanks Vishwanath.

Is there a reference to look at which will help us in adding these effects,
especially AEC ?

I see in the AOSP source code, reference to libqcomvoiceprocessing.so ,
which looks like a similar library from Qualcomm for using AEC provided by
them.

Regards,

Sameer Joshi



On Mon, Mar 13, 2017 at 6:38 PM, Vishwanath Hegde <vnhe...@gmail.com> wrote:

> Hi Sameer,
>
> I think this integration have to come from some where above audio flinger
> layer. Otherwise how do you expect these effects gets mixed per stream of
> interest?
>
> Regards,
> Vishwanath
>
>
> On Sat, Mar 11, 2017 at 4:05 PM, Sameer Joshi <sameerpjo...@gmail.com>
> wrote:
>
>> Hi,
>>
>> We are working on a new Android device which will have the DSP supported
>> Android Audio effects for AEC, Equalizer etc.
>>
>> We have tried to call effects API directly through HAL read and write
>> functions. However, we have not been able to achieve AEC since the delay
>> from speaker output to mic input keeps on changing.
>>
>> Also, we have observed that the FastMixer , FastCapture threads may not
>> be called every period of 10 ms and it may vary in case of transducer
>> changes or CPU load.
>>
>> I wanted to know whether there is  a predefined way to integrate DSP
>> level Audio effects in Android ? Any guidance in this regard would be
>> helpful.
>>
>> Thanks and Regards,
>>
>> Sameer Joshi
>>
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