[Theora-dev] RE: DSP stamp

Andrew Seddon
Tue, 16 Nov 2004 10:02:50 -0000

Hi,

If somebody is interested in having a crack at this (and think's they have a
reasonable chance of succeeding) then there is a dev kit up for grabs.

John, we actually already have a LM9638 (1280x1024, B/W) image sensor interfaced
to the board. There is a colour version drop in replacement. We also have a
color QVGA TFT hooked up for video out.

So a good demo system would be to capture video from the camera chip and spew it
out over the network post-compression (e.g a netcam!). The other way around
could stream over the network and dump to the LCD.

Drop me an e-mail if you are interested.

Cheers,


Andrew Seddon(andrew.seddon@camsig.co.uk)
Cambridge Signal Processing Ltd. (www.camsig.co.uk)
TEL: +44 1354 742563
FAX: +44 1354 740693

On Friday 29 October 2004 01:17 pm, you wrote:
> If someone is willing to step up to do the port (are you volunteering
> for this, John?), by all means this sounds like an opportunity to jump
> on. As I've said, the bitstream is frozen and documented, so I'm
not
> sure how much more we need to be "ready". I'll be happy to
answer any
> questions anyone has.

Browsing to find a hardware module that might handle real-time encoding of
video in theora format is something that I can do.  Doing the port is out of
my league.  Very sorry.

According to http://www.linuxdevices.com/news/NS4405077268.html
"The DSP Stamp comes preinstalled with a serial bootloader and uClinux, and
a
development board is also available."

I guess even if theora was ported to the DSP Stamp, there would also be the
matter of connecting a video source to the development board to test the
speed and quality of the compression.  I'm pretty clueless about that, too.

All I know is that compressing the video at the source, whether its a webcam
or a camcorder, makes a lot of sense because it so greatly reduces the
downstream requirements for network bandwidth and storage.
John


> Are we  interested, or ready for this?  Andrew Seddon is offering to
provide
> hardware to port Theora to the DSP Stamp.

If someone is willing to step up to do the port (are you volunteering
for this, John?), by all means this sounds like an opportunity to jump
on. As I've said, the bitstream is frozen and documented, so I'm not
sure how much more we need to be "ready". I'll be happy to answer
any
questions anyone has.