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Re: mp3 or mpeg4 feasibility on eCos
- From: Satish Kumar <satish at bvt dot sc dot sanyo dot co dot jp>
- To: "Retallack, Mark (Siemens)" <mark dot retallack at siemens dot com>
- Cc: ecos-discuss at sources dot redhat dot com
- Date: Fri, 03 Oct 2003 17:34:41 +0900
- Subject: Re: [ECOS] mp3 or mpeg4 feasibility on eCos
- References: <F5AFBF4F39DBDD488C5B9B41D48145CC1F942D@plestcl0112.stcl.siemens.co.uk>
well,
My target board contains hardware based MPEG-4 encoder and MPEG-4
decoder and its controlled by ARM926EJ-S microprocessor..and supports
upto 64mb memory.
so, whatz the exact role of software control over hardware using eCos..
can some one give me some more inputs..?
satish
On Fri, 3 Oct 2003 09:01:12 +0100
"Retallack, Mark (Siemens)" <mark.retallack@siemens.com> wrote:
> I think the first question is what do you have?
>
> How much memory do you have?
>
> What type of processor are you running on?
>
> Do you have an FPU? - There are already existing libraries that can do
> mp3/mpeg4 decompression that don't need an fpu. For example:
>
> http://www.underbit.com/products/mad/ (GPL)
> http://sourceforge.net/projects/ffmpeg (LGPL)
>
> My first step would be to try and get ecos to compile with one of the above
> libraries and a simple test application. Then when/if you find that it
> works, decide if you want to go the third-party codec route (being very
> careful with the licences) or create you own codec. eCos has a POSIX API
> layer that should make porting easier(!).
>
> -----Original Message-----
> From: Satish Kumar [mailto:satish@bvt.sc.sanyo.co.jp]
> Sent: Friday 03 October 2003 08:43 AM
> To: Retallack, Mark (Siemens)
> Cc: ecos-discuss@sources.redhat.com
> Subject: Re: [ECOS] mp3 or mpeg4 feasibility on eCos
>
>
> so, what are the requirements if i have to develop an mpeg4/mp3 codec on
> eCos..i know its a damn broad question to answer. but if i could get
> some inputs , it would help me out to explore more..on this.
>
> right now, i just have a redboot and eCos kernel running on my target
> board..
>
> thanks
> satish
>
>
>
>
> On Fri, 3 Oct 2003 08:34:51 +0100
> "Retallack, Mark (Siemens)" <mark.retallack@siemens.com> wrote:
>
> > I see no reason why not.
> >
> > Have a look at:
> >
> > http://www.eetimes.com/story/OEG20000404S0024
> > http://www.linuxdevices.com/news/NS6493913129.html
> > http://news.zdnet.co.uk/business/0,39020645,2108278,00.htm
> >
> >
> >
> > -----Original Message-----
> > From: Satish Kumar [mailto:satish@bvt.sc.sanyo.co.jp]
> > Sent: Friday 03 October 2003 08:13 AM
> > To: ecos-discuss@sources.redhat.com
> > Subject: [ECOS] mp3 or mpeg4 feasibility on eCos
> >
> >
> > Hi,
> > Can someone let me know, why mp3 or mpeg-4 kind middleware`s
> > are difficult to develop/port on eCos. is eCos made for such
> > applications..?
> > what kind of applications are usually targeted to work on eCos..?
> >
> > thanks,
> > saty
> >
> > --
> > Satish Kumar <satish@bvt.sc.sanyo.co.jp>
> >
> >
> > --
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> >
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> --
> Satish Kumar <satish@bvt.sc.sanyo.co.jp>
>
>
> Siemens Traffic Controls is a division of Siemens plc. Registered No.
> 727817, England.
> Registered office: Siemens House, Oldbury, Bracknell, Berkshire, RG12 8FZ.
>
> This communication contains information which is confidential and
> may also be privileged. It is for the exclusive use of the addressee.
> If you are not the addressee please note that any distribution,
> reproduction, copying, publication or use of this communication
> or the information in it is prohibited. If you have received this
> communication in error, please contact us immediately and also
> delete the communication from your computer.
>
--
Satish Kumar <satish@bvt.sc.sanyo.co.jp>
--
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