[Arm-netbook] Reverse engineering CedarX Was: Did anybody try A10 video encoding acceleration on Linux?

Oliver Schinagl oliver+list at schinagl.nl
Mon May 6 07:53:16 BST 2013


On 03-05-13 10:12, Piyush Verma wrote:
> I have uploaded Encoder Demo @ ais.im/EncoderDemo-2011.7.7.rar
> <http://ais.im/EncoderDemo-2011.7.7.rar>
>
> Keep in mind it's not tested but I believe with slight modification it
> could be full functional.
I've started documenting stuff about the latest (quite old still) 
libvecore.so over on http://linux-sunxi.org/CedarX and any addition 
would be helpfull for those interested of course. Does look like it will 
be quite a bunch of work without code or docs.
>
> On Fri, May 3, 2013 at 9:33 AM, Piyush Verma <piyush.pv at gmail.com
> <mailto:piyush.pv at gmail.com>> wrote:
>
>     Ok So at list 3 people interested in H264 Encoding I have the
>     encoding example code mention by Henrik and I will available today here.
>
>     Besides I have worked before with H264 Encode/Decode with S5PV210
>     there all source I have from kernel to userspace.
>
>     There are not much step for encode and decode hardly 5 calles for
>     whole decode or encode process. I think it would be possible to
>     easily reverse Engineering.
>
>     Overall step in my mind is
>
>     1 Get a NAL Unit.
>     2. Write to Special decode memory or pass pointer.
>     3 Call Hardware Decode Function.
>     4 Check if all picture decode.
>     5 Read Picture from output memory.
>
>     Same for encode.
>
>     Can't we log this 5 call in Kernel and understand then call and
>     sequence after running user space program ?
>
>     Give me some feedback if all ok why not we start for it.
>
>
>
>
>
>     On Fri, May 3, 2013 at 8:41 AM, Dmitriy B. <rzk333 at gmail.com
>     <mailto:rzk333 at gmail.com>> wrote:
>
>             I have seen encoding libs & examples in the SDK files, and
>             know that
>             some people have attemted to use them with at least partial
>             success.
>
>
>         But "SDK files" != "public cedarx-libs repo", and you cant share
>         these examples, right?
>         I am interested in encoding with CedarX too, but I dont have the
>         full SDK.
>
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>
>
>
>
>     --
>     Thanks & Regards
>
>     Piyush Verma
>
>
>
>
> --
> Thanks & Regards
>
> Piyush Verma
>
>
>





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