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Re: [Linphone-developers] Linphone and G.722 Wideband codec

From: Simon Brenner
Subject: Re: [Linphone-developers] Linphone and G.722 Wideband codec
Date: Tue, 29 Jun 2010 13:24:35 +0200
User-agent: Thunderbird (X11/20091015)

> The files from the code from the internet are not directly very useful,
> because you should make some config&make files.

Yeah, that's right!

> Is there anybody who has allready made a G722 plugin (the sama as msilbc
> plugin) for Linphone (so that i can compile that first and give some
> parameters to the linphone configuration to use them)?

I'm actually in the middle of writing a Linphone plugin, but this is for other 
reasons. For a start,
I took the msx264 plugin code and replaced it by my own code preserving the 
needed structure. But I
better had had a kind of template or decent guide to do that.

Perhaps we can ask Simon Morlat how his approach to writing a plugin is?? 
Simon, do you have some
kind of plugin template?


>> Well, as I said, I never got the codec actually running.
>> You seem to have done the same steps as I did in order to integrate that
>> particular piece of code
>> from the internet. So I'm not further than you.
>> But the thing with doing it as a plugin seems very clever to me! I like
>> the idea of a plugin being
>> generally independent from the main program.
>> Before saying any more I'll also have to have a look at some already
>> existent plugins in order to
>> understand how they work.
>> -Simon.
>> menno wrote:
>>> Hi!
>>> Nice to hear!
>>> Can you explain the steps that you do to get this G722 working (to get
>>> this in the codec section)? I'll try that first on a normal i386/i686 PC
>>> and after that i will try to recompile it to an ARM device.
>>>> Hi!
>>>> Yeah, that was exactly was I was trying to do 2 months ago
>>>> (coincidentally
>>>> also on an ARM device). I
>>>> also got everything to compile and if I remember it correctly I even
>>>> got
>>>> G.722 to be standing in the
>>>> audio codec list.
>>>> But I unfortunately never got the codec really running which I don't
>>>> understand...
>>>> I would also definitely be interested in having G.722 integrated in
>>>> Linphone - even if it would be
>>>> with the help of a preprocessor switch or something. (Like
>>>> USE_G722_CODEC)
>>>> -Simon.
>>>> menno wrote:
>>>>> Hello,
>>>>> I want to use the G.722 codec on a 1.2Ghz ARM Device in the future.
>>>>> For
>>>>> now i want to use linphone incombination with the Wideband G.722
>>>>> codec.
>>>>> I follow the following steps:
>>>>> 1. I download all the G722 files @
>>>>> 2. I unpack the files and put msg722.c, g722_encode.c and
>>>>> g722_decode.c
>>>>> into mediastreamer2/src
>>>>> 3. I put the g722.h file into the
>>>>> mediastreamer2/include/mediastreamer2
>>>>> directory
>>>>> 4. I added two new filter id's to allfilters.h
>>>>> 5. I add all the C-files to the mediastreamer2/src/
>>>>> 6. I add
>>>>> "linphone_core_assign_payload_type(&payload_type_g7221,9,NULL);"
>>>>> Compiling works ok with the current version linphone-3.3.1.tar.gz. But
>>>>> after compiling , and starting program i get no other codecs than the
>>>>> g711A/U,GSM and not the G722 one.
>>>>> Can anybody help me to get this G722 wideband codec working (or add
>>>>> this
>>>>> to the current linphone)?

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