Re: [xine-devel] HW mpeg decoder: Where to begin?

[Miguel F. <mi...@ce...>]

On Fri, 2003-06-13 at 10:56, Vrihad Shoonya wrote:
> I am part of a team which is working on a linux based set top
> box project. It is based on SiS552 chipset. It contains an 
> inbuilt hardware mpeg decoder. SiS is ready to supply a binary 
> kernel module and a shared library. They will also provide the 
> API specs for the library once we sign the NDA.

how exactly do you pretend to write a xine plugin if the API is
protected by an NDA?

i might be wrong, but i would say that it is ok to use a binary kernel
module. however, the shared library will be linked to xine and thus must
be GPL'ed (as well as the plugin itself).

>  Now at present 
> there is no open source video player available which supports 
> SiS552's h/w mpeg decoder. So we have a choice to select any 
> linux based player based on its features for which we would have 
> to write respective plugin.

nice ;)

> I went through xine hackers' guide and it is completely silent
> on development of video decoder plugins while other plugins
> have some sort of documentation and examples. My question is
> can I get some pointers to the places from where I can begin?

see src/libxinevdec/foovideo.c for a complete video decoder example.

"foovideo.c: This is a reference video decoder for the xine multimedia
 * player. It really works too! It will output frames of packed YUY2
data
 * where each byte in the map is the same value, which is 3 larger than
the
 * value from the last frame. This creates a slowly rotating solid color
 * frame when the frames are played in succession."


regards,

Miguel