On 8/23/20 6:02 AM, Michael Maier wrote:
Hello!
Alexander Traud provided patches for Asterisk 13 for the EVS codec[1]. Those
patches can be applied to Asterisk 16, too. I attached a tar file, which
contains all patches from
Alexander in one file and a spec file for building the evs codec library from
www.etsi.org (tested on CentOS 7).
At first, you have to build the lib3gpp-evs library with
rpmbuild -ba lib3gpp-evs.spec
This creates 4 packages: a src, a devel and the library package itself and the
corresponding debuginfo package.
On the machine, you are building Asterisk at next, you have to install the
library and the devel package. On the machine Asterisk runs, you only need the
library package.
To build Asterisk, you have to apply the evs-asterisk.16.patch (which contains
all changes necessary in one patch file as described at [1] - the patch here
wants to have this
patch[2] already applied before). Any further information how to build Asterisk
after the patch file has been applied can be found here[1].
If all went fine, there are at the end two more modules in
/usr/lib64/asterisk/modules:
codec_evs.so
res_format_attr_evs.so
After restarting of Asterisk, you can check if everything went fine by:
asterisk -r
core show codecs
(-> evs must be part of the list)
core show translation
(evs must be part of the list)
After adding the codec to be allowed for a trunk, you may test it - I couldn't
test it so far, because I didn't have any device using the evs codec.
Thanks
Michael
[1] https://github.com/traud/asterisk-evs
[2] https://www.mail-archive.com/asterisk-dev@lists.digium.com/msg45213.html
Thanks for the patches. All seemed to go smoothly:
ls /usr/lib64/asterisk/modules/*evs.so
/usr/lib64/asterisk/modules/codec_evs.so
/usr/lib64/asterisk/modules/res_format_attr_evs.so
And
core show codecs
..........
ID TYPE NAME FORMAT DESCRIPTION
------------------------------------------------------------------------------------------------
4 audio evs evs (3GPP EVS)
.................
1 audio amr amr (AMR)
2 audio amrwb amrwb (AMR-WB)
But "core show translation" does not show evs (or amr, which I also built):
core show translation
Translation times between formats (in microseconds) for one
second of data
Source Format (Rows) Destination Format (Columns)
ulaw alaw gsm g726 g726aal2 adpcm slin8 slin12 slin16
slin24 slin32 slin44 slin48 slin96 slin192 lpc10 speex8 speex16 speex32
ilbc g722 siren7 siren14 testlaw opus silk8 silk12 silk16 silk24
.................
Any suggestions?
sean
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