Re: [Magiclantern-devel] Great work with the player! Does this list work?

[Nicholas H. <nic...@er...>]

On Tuesday 05 April 2005 23:57, Gábor Kovács wrote:
> > Maybe we could do better by trying to port BetaPlayer
>
> You don't have to. It's already underway :)

In that case we'll probably find you surpassing TML quickly :)

Feel free to reuse anything I've written in TML for your port - but I don't 
know how much you'd find useful anyway.

> > I agree about moving to pure ARM code.  As I've gone, I've tried to make
> > sure I made few assumptions about the processor type in most of the code
> > (where I didn't have to).  I probably couldn't have started off with
> > doing pure-arm, but I'm a bit more familiar with the tools now so I'll
> > probably make the move as the next major stage of development.
>
> Btw what do you know about prc-tools development? It seems the latest 2.3
> version is very old. I'am currently compiling  new modified gcc cross
> compiler for myself using gcc 3.4.3 with making the R9 ARM register free
> for use (and restoring it manually before every OS callback). Loosing two
> ARM registers (R9,R10) with the default armlet system on PalmOS is kinda
> too much for me :)

Sounds like a good idea.  When I say I'm a bit more familiar now, I haven't 
actually thought about what I'm going to do next - I'm just more aware of the 
issues involved; such as use of PIC registers, etc.  I haven't had any 
experience with optimising video decoding, but is a compiler upgrade and 1 
extra register really going to make a significant boost to performance?  I'm 
sure you'd get slightly better optimisation of some of the code, but is that 
going to translate into more than a few percent of decoding time?

I'm actually still on prc-tools 2.2.  Still haven't gotten around to upgrading 
yet.


Nicholas