[opus] OPUS on embedded platforms

[van Bijleveld Christian (ST-CO/ENG1.3)]

Hei,

Thanks for your reply.

Regarding your last question:

>>    * If these figures are not available, does anyone have an estimate on
>>      how many resources OPUS needs compared to the AAC codec??

Which AAC? HE-AAC requires well over 3 times as much CPU as LC-AAC.

Compared to LC-AAC.



Met vriendelijke groeten | Best Regards,
Christian van Bijleveld

Bosch Security Systems BV
www.boschsecurity.com
T. +31 (0)40 257 7076
F. +31 (0)40 257 7091
christian.vanbijleveld at nl.bosch.com

-----Original Message-----
From: opus-bounces at xiph.org [mailto:opus-bounces at xiph.org] On Behalf Of Timothy B. Terriberry
Sent: dinsdag 18 december 2012 17:21
To: opus at xiph.org
Subject: Re: [opus] OPUS on embedded platforms

Jean-Marc Valin wrote:
> On 12/18/2012 09:35 AM, van Bijleveld Christian (ST-CO/ENG1.3) wrote:
>>    * I see that there are projects which aim to implement OPUS on a ARM
>>      processor. Does anyone know about or have figures regarding
>>      resources (memory footprint, clock cycles) which are needed in order
>>      to run OPUS on lower-profile processors, such as Cortex Mx, Blackfin
>>      DSP or some TI DSP??

Just as a point of reference, a fixed-point build running complexity 10
encode+decode of 48 kHz stereo in CELT mode at 64 kbps is 3.3x realtime
on my 600 MHz Cortex A8 (which is not an Mx, but should at least give
you something to compare to). There's still substantial room for
platform-specific optimizations here.

>>    * If these figures are not available, does anyone have an estimate on
>>      how many resources OPUS needs compared to the AAC codec??

Which AAC? HE-AAC requires well over 3 times as much CPU as LC-AAC.
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