Hi have you looked on CPU load, to my knowledge the iLBC is not optimized at all and we have done some tests on 400 Mhz using Benny's media performance program: 15:55:36.647 os_core_unix.c pjlib 1.0.1 for POSIX initialized MIPS test, with CPU=396Mhz, 435.6 MIPS Clock Item Time CPU MIPS Rate (usec) (%) 8KHz codec encode/decode - iLBC 1437754 143.775 626.29 This clearly shows that iLBC just doesn't fit on a 400 MHz ARM, so I think you have a number of options: License an optimized iLBC version either for ARM or TI DSP Change codec Implement PJMedia in the DSP portion of DM355 Optimze some part of the code your self You could checkout http://trac.pjsip.org/repos/wiki/PJMEDIA-MIPS for some more info on PJMedia performance on different platform. BR/Olle _____ From: pjsip-bounces@xxxxxxxxxxxxxxx [mailto:pjsip-bounces at lists.pjsip.org] On Behalf Of Kapil Pendse Sent: den 2 april 2009 13:47 To: pjsip list Subject: Re: iLBC + PJSUA on TI DaVinci Hello, Can someone kindly help me out. I'm new to pjsip and speech coding. It'll be great if someone can point me in the right direction to solve this problem. I guess many people would have already deployed PJSIP + iLBC on ARM processors, probably even on DaVinci platforms. Did anyone of you face similar problem (mentioned in my previous mail)? What was the solution? I'm guessing this is a typical problem which can probably be fixed by some minor change in compilation flags/configuration/command line parameters. I feel so because I have not changed anything in the code. The same code runs perfectly on a Linux desktop, but gives this problem on DaVinci platform. Kindly help me out. Warm regards, Kapil On Wed, Apr 1, 2009 at 6:26 PM, Kapil Pendse <kapil.pendse at gmail.com> wrote: Hello, I've compiled the pjproject 1.0.1 for TI DaVinci DM355. Initially there was problem in the audio. Everything was jittery and nothing could be made out. Then I used the following method to compile: $ ./aconfigure --host=armv5tl-montavista-linuxeabi CFLAGS='-O2 -msoft-float -DNDEBUG' --disable-floating-point $ make ARCH=arm CROSS_COMPILE=arm_v5t_le- And executed pjsua as: $ ./pjsua-armv5tl-montavista-linux-gnueabi --app-log-level=2 --stereo --ec-tail=0 --add-codec pcmu --dis-codec speex --dis-codec ilbc --dis-codec GSM --dis-codec G722 --clock-rate=8000 --snd-clock-rate=8000 Then the audio was clean. Since --add-codec pcmu was used, PCMU codec was used by default. Then I changed to iLBC by running the same pjsua build as: $ ./pjsua-armv5tl-montavista-linux-gnueabi --app-log-level=2 --stereo --ec-tail=0 --dis-codec pcmu --dis-codec speex --add-codec ilbc --dis-codec GSM --dis-codec G722 --clock-rate=8000 --snd-clock-rate=8000 Now again the audio is very jittery, just like the first problem I had faced (described above). I'm not sure if "jittery" is the correct word to describe it. I can barely make out that someone is speaking from the other end of the call, but cannot understand what it is... I'm new to VOIP and PJSIP so kindly help me out. I even changed the default iLBC mode from 30 to 20: pjmedia/src/pjmedia-codec/ilbc.c: //#define DEFAULT_MODE 30 #define DEFAULT_MODE 20 pjsip/include/pjsua-lib/pjsua.h #ifndef PJSUA_DEFAULT_ILBC_MODE //# define PJSUA_DEFAULT_ILBC_MODE 30 # define PJSUA_DEFAULT_ILBC_MODE 20 #endif I also played around with the --ec-tail=X command line parameter. There is some change in way the received audio plays out but it is not at all understandable. Kindly help me out. Best regards, Kapil Pendse TekKraft -- "The Power to Imagine, is The Power to Create!" -TTux -- "The Power to Imagine, is The Power to Create!" -TTux -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20090402/b9633850/attachment.html>
