Hi,
I am an applications engineer for Texas Instruments in the UK. I am
trying to port the CELT codec to the C5505, this has HW accelerated FFT engine
(http://focus.ti.com/docs/prod/folders/print/tms320vc5505.html).
I am having problems with the stack allocation. Do you have any reference code
that compiles for the C55x under CCS (code composer studio)?
*******************************
Tony Cave
Senior Embedded Processor FAE
Texas Instruments Limited
3000 Aviator way
Manchester
M22 5TG
Mb: +44-7917-183293
*******************************
Texas Instruments Limited, 800 Pavilion Drive, Northampton, NN4 7YL. Registered
in England & Wales under company number 00574102
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Hi, There's are already some C55-specific optimisations in the code. You can enable them by defining CONFIG_TI_C55X and ENABLE_TI_DSPLIB. As for the stack allocation, it's just a fallback for compilers that don't support C99 arrays and have a broken alloca() -- it's always best not to use it. Still, can you tell me what problem you are seeing with it? Cheers, Jean-Marc On 16/12/09 05:38, Cave, Tony wrote:> Hi, > > I am an applications engineer for Texas Instruments in the UK. I am > trying to port the CELT codec to the C5505, this has HW accelerated FFT > engine (http://focus.ti.com/docs/prod/folders/print/tms320vc5505.html). > > I am having problems with the stack allocation. Do you have any > reference code that compiles for the C55x under CCS (code composer studio)? > > ******************************* > > Tony Cave > > Senior Embedded Processor FAE > > Texas Instruments Limited > > 3000 Aviator way > > Manchester > > M22 5TG > > Mb: +44-7917-183293 > > ******************************* > > Texas Instruments Limited, 800 Pavilion Drive, Northampton, NN4 7YL. > Registered in England & Wales under company number 00574102 > > > > _______________________________________________ > celt-dev mailing list > celt-dev at xiph.org > http://lists.xiph.org/mailman/listinfo/celt-dev
Jean-Marc,
Thank you for the tips. I think I have solved the stack issue (I noticed the
C99 array issue and avoided this). I will probably create an alloca.h (I think
this is the correct thing to do). I am happy to feed back any work I do, if you
want me to do this what is the process?
Tony.
Texas Instruments Limited, 800 Pavilion Drive, Northampton, NN4 7YL. Registered
in England & Wales under company number 00574102
----- Original Message -----
From: Jean-Marc Valin <jean-marc.valin at usherbrooke.ca>
To: Cave, Tony
Cc: celt-dev at xiph.org <celt-dev at xiph.org>
Sent: Thu Dec 17 03:18:43 2009Subject: Re: [CELT-dev] Porting CELt to the C5505
Hi,
There's are already some C55-specific optimisations in the code. You can
enable them by defining CONFIG_TI_C55X and ENABLE_TI_DSPLIB. As for the
stack allocation, it's just a fallback for compilers that don't support
C99 arrays and have a broken alloca() -- it's always best not to use it.
Still, can you tell me what problem you are seeing with it?
Cheers,
Jean-Marc
On 16/12/09 05:38, Cave, Tony wrote:> Hi,
>
> I am an applications engineer for Texas Instruments in the UK. I am
> trying to port the CELT codec to the C5505, this has HW accelerated FFT
> engine (http://focus.ti.com/docs/prod/folders/print/tms320vc5505.html).
>
> I am having problems with the stack allocation. Do you have any
> reference code that compiles for the C55x under CCS (code composer studio)?
>
> *******************************
>
> Tony Cave
>
> Senior Embedded Processor FAE
>
> Texas Instruments Limited
>
> 3000 Aviator way
>
> Manchester
>
> M22 5TG
>
> Mb: +44-7917-183293
>
> *******************************
>
> Texas Instruments Limited, 800 Pavilion Drive, Northampton, NN4 7YL.
> Registered in England & Wales under company number 00574102
>
>
>
> _______________________________________________
> celt-dev mailing list
> celt-dev at xiph.org
> http://lists.xiph.org/mailman/listinfo/celt-dev