GStreamer JPEG 2000 Workflows

[Sebastian Dröge]

On So, 2016-06-26 at 09:46 -0400, Aaron Boxer wrote:
> Ni Nicola,
> 
> Thanks for running these experiments - I didn't know about the timing feature in gstreamer.
> It is interesting that openjpeg 2.1 is about 3 times slower than openjpeg 1.5. Since the core 
> encoding is not that different between the versions, the only explanation I can think of
> is that the test source is monochrome, and openjpeg 2.1 encoder is treating it as RGB or YUV.
> I will definitely take a look.

OpenJPEG 2.1 has a different API that is less efficient to use for
GStreamer. More copying is going on, but I can't remember details.

IIRC I told you about that a few weeks ago on this list already :)

-- 

Sebastian Dröge, Centricular Ltd · http://www.centricular.com
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 949 bytes
Desc: This is a digitally signed message part
URL: <https://lists.freedesktop.org/archives/gstreamer-devel/attachments/20160627/a223fddb/attachment.sig>