Mpeg Decoder


crow_riot

Well-Known Member
Joined
Sep 21, 2009
Messages
1,763
Location
.at
just a quick question that came to my mind reading through sources.
is any info available (i suppose not ;)) how to use that hardware decoder? the idea is to use that thingy for a game intro or something like that...

thx
 
just to note if anyone else is interested. i've finally found something within the firmware source code.
within 'pollux_idct.h/c' some functions doing IDCT (inverse discrete cosine transform) on hardware are available
have not tried them yet, though :)
 
crow_riot said:
just to note if anyone else is interested. i've finally found something within the firmware source code.
within 'pollux_idct.h/c' some functions doing IDCT (inverse discrete cosine transform) on hardware are available
have not tried them yet, though :)
Hello,
maybe you wan't to check Leapfrog Didj Linux Source?
The Didj uses the same SoC as the Wiz. In the tarball there is a mplayer patch. I'm not sure if the IDCT unit is used with this patch.
 
Last edited by a moderator:
Claude said:
crow_riot said:
just to note if anyone else is interested. i've finally found something within the firmware source code.
within 'pollux_idct.h/c' some functions doing IDCT (inverse discrete cosine transform) on hardware are available
have not tried them yet, though :)
Hello,
maybe you wan't to check Leapfrog Didj Linux Source?
The Didj uses the same SoC as the Wiz. In the tarball there is a mplayer patch. I'm not sure if the IDCT unit is used with this patch.

oh didn't know that. great - thanks for that!
 
Last edited by a moderator:
crow_riot said:
Claude said:
crow_riot said:
just to note if anyone else is interested. i've finally found something within the firmware source code.
within 'pollux_idct.h/c' some functions doing IDCT (inverse discrete cosine transform) on hardware are available
have not tried them yet, though :)
Hello,
maybe you wan't to check Leapfrog Didj Linux Source?
The Didj uses the same SoC as the Wiz. In the tarball there is a mplayer patch. I'm not sure if the IDCT unit is used with this patch.

oh didn't know that. great - thanks for that!
There is no real MPEG decoder in this chip. But! there are components that may assist big time -- IDCT and Color space converter. IDCT takes only 300 cycles to compute entire table -- that's faster than Blackfin!

devs -- please download the file and put it on file archive :)
rapidshare.com/files/290708158/LF1000_IDCT_rev.03.doc.html
 
Last edited by a moderator:
Back
Top