ALSA Compress Offload support

[Arun Raghavan]

On 20 January 2015 at 12:46, Arun Raghavan <arun at accosted.net> wrote:
> On 16 January 2015 at 17:21, Qais Yousef <qais.yousef at imgtec.com> wrote:
>> On 01/13/2015 10:04 AM, Qais Yousef wrote:
>>>
>>>
>>> Maybe I specified the wrong name. In tinycompress they open the compressed
>>> device using open()[2]. I'm not familiar with alsalib and how it should
>>> handle this.
>>>
>>> [1] http://git.alsa-project.org/?p=tinycompress.git;a=summary
>>> [2]
>>> http://git.alsa-project.org/?p=tinycompress.git;a=blob;f=compress.c;h=15dfdb74137ed0d1c7d65d8318391ac75ae79ee4;hb=HEAD#l240
>>>
>>
>> OK asking on alsa mailing list [1] what alsasink currently supports is not
>> what I am asking for. So back to my original question, what is the best way
>> to add support for alsa compress offload in gstreamer? I'm not sure which is
>> better to extend the current alsasink or create a new (calsasink?)
>> component. I think the latter is better to avoid making alsasink too
>> complex.
>>
>> [1] http://thread.gmane.org/gmane.linux.alsa.devel/133034
>
> IMO a separate element probably makes sense. The compress offload
> devices don't work through alsa-lib at all (they use tinycompress), so
> I suspect there's not a whole bunch of code to be shared.

Just read your thread on alsa-devel. If you do end up adding support
for compressed offload to alsa-lib, the answer is different, of
course. :-)

-- Arun