[PD-dev] gemlist and pdp packet format documentation

[Tom Schouten]

it's not really YV12, but it has the same layout.
the difference is that while the components in standard YV12 are
unsigned char, in the pdp packet they are 16bit signed integers, with
chroma (0,0) indicating gray scale.

it's one of these per packet.
the protocol for passing them within pd refers to the packets with
an integer id, and has 3 phases:

register_rw (if you want to modify it)
register_ro (if you want to only read it)
process     (the actuall process tick)


On Tue, Feb 07, 2006 at 02:34:17PM -0500, Hans-Christoph Steiner wrote:
> 
> So basically, its one video frame in YV12 format per packet?  Is that  
> the most basic element?
> 
> .hc
> 
> On Feb 7, 2006, at 12:14 PM, Ed Kelly wrote:
> 
> >Hi Hans,
> >
> > The format of pdp packets is YV12. This page should give you more  
> >information - I would think source code for pdp_scan~ and pdp_scanxy~  
> >would give you some clues...
> >
> > http://www.fourcc.org/yuv.php#YV12
> >
> > Happy pixels,
> > Ed
> >
> >
> >
> >Hans-Christoph Steiner <hans at eds.org> wrote:
> >>Is there any documentation of the formats of gemlist and pdp packet?
> >>Can either of these formats be broken down into lesser elements within
> >>Pd, like floats, etc.?
> >>
> >>.hc
> >>
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