[opus] OPUS at Texas Instruments C6418

[Jean-Marc Valin]

Hi Robert,

The file is not distributed in the official releases, but I can find it
in the git repository.

Cheers,

	Jean-Marc

On 10/22/2018 03:53 AM, Robert Madinger wrote:
> Hi Jean-Marc,
> 
> thank you for that suggestion!
> It seems that the file "fixed_c6x.h" is not part of the Opus sources, so the compiler cannot find it after enabling the TI_C6X_ASM config option.
> Maybe it was only part of an early version of the Opus sources?
> I looked for the file in versions V1.1, V1.1.1, V1.2alpha and V1.3 but did not found it.
> 
> Do you have an idea, where I can get the file?
> 
> Thank you and best regards,
> Robert
> 
> 
> 
> 
> AVT Audio Video Technologies GmbH
> Nordostpark 91 | D-90411 Nuernberg
> T: +49 911 5271-0 | F: +49 911 5271-100
> RMadinger at avt-nbg.de | www.avt-nbg.de
> Managing Director:  Wilfried Hecht
> Registered Office:   Nuernberg, HRB 14317
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> 
> 
> 
> 
> -----Ursprüngliche Nachricht-----
> Von: Jean-Marc Valin <jmvalin at jmvalin.ca> 
> Gesendet: Freitag, 19. Oktober 2018 20:04
> An: Robert Madinger <rmadinger at avt-nbg.de>; opus at xiph.org
> Betreff: Re: [opus] OPUS at Texas Instruments C6418
> 
> Hi Robert,
> 
> There's also a TI_C6X_ASM config option, that causes the fixed_c6x.h header to be used, but I think it hasn't been tested in years. I don't know if it still works, but if not it's probably not too hard to fix (patch welcome). The fixed_c6x.h file can also probably be extended to cover more of the C6x arithmetic operators. Beyond that, you'd have to go to assembly/intrinsic optimization of specific functions.
> 
> Cheers,
> 
> 	Jean-Marc
> 
> 
> On 10/19/2018 11:37 AM, Robert Madinger wrote:
>> Dear Opus family,
>>
>>  
>>
>> we have implemented the Opus codec at a Texas Instruments DSP C6418.
>>
>> It is working fine!
>>
>>  
>>
>> Does anyone has experience with the configuration of the codec for a 
>> speed optimized implementation on that DSP?
>>
>> At the moment, we use the following settings:
>>
>>  
>>
>> #define NONTHREADSAFE_PSEUDOSTACK                           1
>>
>> #define
>> FIXED_POINT
>> 1
>>
>> #define DISABLE_FLOAT_API
>>                 1
>>
>> #define
>> OPUS_BUILD
>> 1
>>
>> #define
>> CONFIG_TI_C6X                                                              
>> 1
>>
>>  
>>
>>  
>>
>> Are there any better or further possibilities to get a speed optimized 
>> code on the TI C6418?
>>
>> Code size is less relevant.
>>
>>  
>>
>> Many thanks in advance!
>>
>> Best regards,
>>
>> Robert
>>
>>  
>>
>>  
>>
>> Robert Madinger
>>
>> avt_logo_signatur
>> AVT Audio Video Technologies GmbH
>> Nordostpark 91 | D-90411 Nuernberg
>> T:+49 911 5271-0 | F: +49 911 5271-100_ RMadinger at avt-nbg.de 
>> <mailto:%0bRMadinger at avt-nbg.de>_| www.avt-nbg.de 
>> <http://www.avt-nbg.de/> Managing Director:  Wilfried Hecht Registered 
>> Office:   Nuernberg, HRB 14317
>>
>>      Twitter_logo_blue Signatur     *AVT is now on Twitter - **Follow 
>> @AVTGmbH <https://twitter.com/avtgmbh>*
>>
>>  
>>
>>
>>
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