Hi Christophe,
On 28.11.2019 10:37, Christophe de Dinechin wrote:
On 22 Nov 2019, at 15:06, Anton Yakovlev <anton.yakov...@opensynergy.com> wrote:
On 22.11.2019 13:35, Mark Brown wrote:
On Thu, Nov 21, 2019 at 01:57:51PM +0100, Anton Yakovlev wrote:
SNDRV_PCM_FORMAT_MPEG
SNDRV_PCM_FORMAT_GSM
SNDRV_PCM_FORMAT_G723_24
SNDRV_PCM_FORMAT_G723_24_1B
SNDRV_PCM_FORMAT_G723_40
SNDRV_PCM_FORMAT_G723_40_1B
Do we really need all of them? And I skipped endianess, but should we care
about it as well?
The compressed audio formats I quoted above (and possibly some others)
are mostly redundant and better handled through something like the ALSA
compressed audio interface but that's definitely a separate thing with
different requirements.
Then let's include all except these.
Is the intent that any virtio device has to support all the same formats?
If I’m talking to a hardware decoder, then a compressed format makes sense
(there is no point in decompressing in software if the device’s very purpose
is to do it in hardware). But then, maybe it supports one format but not
another.
So it looks to me like all the formats should be part of the spec, and some
device capabilities should indicate which ones the device accepts.
We discussed only PCM-related things. Compressed offload could be as a feature
with its own configuration layout, format definitions, request types, maybe
virtqueue(s) and so on.
Thanks
Christophe
--
Anton Yakovlev
Senior Software Engineer
OpenSynergy GmbH
Rotherstr. 20, 10245 Berlin
Phone: +49 30 60 98 54 0
E-Mail: anton.yakov...@opensynergy.com
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--
Anton Yakovlev
Senior Software Engineer
OpenSynergy GmbH
Rotherstr. 20, 10245 Berlin
Phone: +49 30 60 98 54 0
E-Mail: anton.yakov...@opensynergy.com
www.opensynergy.com
Handelsregister/Commercial Registry: Amtsgericht Charlottenburg, HRB 108616B
Geschäftsführer/Managing Director: Regis Adjamah
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