Hi Chih-Wei,

I wanna port H.264 decoder to android framework. Android already
supports H.263. For any new thing to port into android, first it has
to be made OpenMAX compliant. Then it can be ported. For making the
component OMX compliant, it has to be wrapped around a wrapper.

I want to know how can I achieve this..? What necessary changes to be
made to port this decoder into android framework? Does anybody have
done this in the past or any idea about this? Any documentation which
I can refer for doing this thing..? How can it be wrapped & ported
into android framework ?

Later on I will port mp4 into android framework. But at first I need
to do this.

Thanks,
Ashish.

Not sure what you are going to do.
But I'm sure I can play .mp4 file with H264 codec on Android.

So what do you exactly want to port?


On 11/10/2009,  ashraw <[email protected]> wrote:
> Hi All,
>
> I am porting H.264 decoder to android framework. Can I know how to do
> it?
>
> For this I know that I have to make it Open MAX compliant. I have also
> read the Open MAX Call Sequences.pdf file.
>
> In that pdf file, several steps & diagrams are given & the relation of
> PV, OMX core & OMX component is also shown like
>
> OMX_Init, OMX_Deinit, OMX_GetHandle, OMX_SendCommand,
> OMX_AllocateBuffers, OMX_UseBuffers, OMX_FreeHandle etc.
>
> I have understood that pdf file. Now i want to move further, but dont
> know how to start ? Can anybody help me ?
>
> I know I have to wrap H.264 decoder with a wrapper to make it OpenMAX
> compliant. I want to ask " What is this wrapper ? ".
>
> " How should I start ? "
>
> Does anybody have done this in the past ? Please share something with
> me ?
>
> Also, android is also having avc_h264 folder inside path  "\mydroid
> \external\opencore\codecs_v2\video". So does it mean that h.264 is
> already ported inside android ? If not, then for what purpose is this
> folder given.
>
> If anybody has knowledge of ffmpeg, then there is a libavcodec folder
> inside ffmpeg. There are certain .c & .h files for h.264. How can I
> use that files for my work? Does anybody know about H.264 APIs for
> interacting with OMX core ? How will they interact ? OR How can I make
> them interact with OMX core ?
>
> Please help me. ITS URGENT.
>
> Thanks in advance,
>
> Regards,
>
> Ashish.

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