CELT library

Marcin Nowak

Hi,

My customer would like to use CELT library for audio as it should consume less bandwidth and introduce lower latency than AAC-LC (customer is using DM365)

Do we have any estimate how much bandwidth it takes when run on ARM9? I have a load estimate for C55 - is there any way to translate it to an equivalent of load on ARM9?

Full CELT LC mode

Enc/Dec State (each)               4.5 kB                                                           0.5 kB

Required Stack                       11-13 kB                                                         7 kB

Table Data (ROM)                     5.5 kB                                                           5.5 kB

CPU (TI-C55x DSP)                 60 MIPS (enc)+                                              ~30 MIPS (enc)+

                                             30 MIPS (dec)                                                ~15 MIPS (dec)

Regards,

Marcin

over 15 years ago

0 MikeH46159 over 15 years ago

Prodigy 20 points

Marcin,

Is there a CELT library for the C55xx? If so, where can I find it?

MikeH

0 Marcin Nowak over 15 years ago in reply to MikeH46159

TI__Intellectual 1130 points

HI,

I own all of you some clarification here.

TI doesn't have any internal version of CELT lib. I mentioned a port for C55xx following a CELT LIB presentation at: www.celt-codec.org/presentations/misc/lca-celt.pdf

One path to follow is http://lists.xiph.org/pipermail/celt-dev/2009-December/000268.html

Regards,

Marcin

0 MikeH over 15 years ago in reply to Marcin Nowak

Guru 15580 points

Marcin,

CCS4 is having trouble locating these (as am I):

#include "dsp_fft16x16t.h"

#include "dsp_fft32x32s.h"

#include "dsp_ifft32x32.h"

Any idea where I can find them? I have dsplib_2.40.00 installed.

MikeH

Processors

Processors forum

CELT library