Кодеки

G.729 and G.723.1 codecs x86 (and x86_64) Linux and FreeBSD binaries for Asterisk open source PBX

DISCLAIMER: You might have to pay royalty fees to the G.729/723.1 patent holders for using their algorithm.

• Sources
• Binaries
• Notes and Troubleshooting
• Getting help

Sources

• asterisk-g72x-1.1-beta3.tar.bz2 - supports Asterisk 10.0, supports IPP 7.0
• asterisk-g72x-1.0.tar.bz2
• README
• hg clone http://bitbucket.org/arkadi/asterisk-g72x

Binaries

Notes

• After download check MD5SUM.
• Use x86_64 build if running 64-bit mode. Binary without x86_64 in its name is 32-bit. Use pentium4/core2/opteron binaries even your processor is 64-bit capable but you are running 32-bit.
• Use Pentium 4 build for Pentium D. Use Pentium 3 for VIA C3 and Pentium 4 for VIA C7. XEON is server type of Pentium3/Pentium4/Core2. Celeron is Pentium3/Pentium4/Core2 with smaller cache. Basically, there are 4 software cores: MMX, SSE, SSE2, SSE3. Pick closest match from Intel CPU line and try it.
• GCC, GCC4 or ICC - all binaries are compatible with Asterisk built by any other compiler, use what is faster or better for you.
• sse3 builds are only for newer P4 chips (Prescott) with SSE3 support, check for PNI flag in /proc/cpuinfo.
• ICC cores are not always the fastest, check with '(core) show translation recalc 10' on Asterisk console, ensure the box is idle or else timings will be inaccurate.
• Non-x86 architecture CPU-s are not supported. IPP is available for Itanium but I don't have the hardware. There is also IPP for ARM, but I don't have ARM hardware too. Also, ARM vary a lot, most of ARM-s are too slow to be practical for G.729 and G.723.1, and various things including floating point must be sorted out before ARM binaries became possible.

Troubleshooting

• Noise or metalic sound with codec_g723
  
  Configure /etc/asterisk/codecs.conf [g723] sendrate=63 or 53 as described at the top of this page.
• Distorted sound
  
  Disable VAD and CNG in phone and/or your VOIP provider.
• show translation - codec is not loaded
  
  Bump asterisk verbosity level with -vv and watch for messages right after 'loading module codec_g729...'
• Module codec_g72... does not provide a description
  
  Choose proper version of the codec to match your Asterisk version. TRUNK is for SVN TRUNK - the next yet unrealeased major version of Asterisk.
• Module codec_g72... was not compiled with the same compile-time options as this version of Asterisk.
  
  Try new 1.4 and/or TRUNK builds.
• loader.c... __load_resource: /usr/lib/asterisk/modules/codec_g72...: cannot restore segment prot after reloc: Permission denied
  
  Execute:
  
  $ chcon -t textrel_shlib_t /usr/lib/asterisk/modules/codec_g72[39]*.so
  
  This happens when SELinux is enabled and Asterisk process cannot load the codec because of ELF TEXTREL in shared library. This is how IPP works and that is fine.
• Error loading module codec_g72...: cannot open shared object file: No such file or directory
  
  Check
  
  $ ldd codec_g729.so
  
  $ strace -o trace.log -efile -f asterisk
  
  send ldd output and trace.log file to Asterisk G.729 Google group.
• Error loading module codec_g72...: wrong ELF class: ELFCLASS32
  
  Use x86_64 binaries because you're running 64-bit OS.
• $ ldd codec_g729.so: not a dynamic executable
  
  You are running 32-bit, see Notes - note #2
• Asterisk crashing at startup
  
  If Pentium4 codec is not working, try -no-sse builds, try Pentium3. Try ICC builds. Doesn't work - try Pentium and Debug builds.
• Asterisk still crashing at startup
  
  Compile asterisk with CFLAGS=-g
  
  Run asterisk in gdb (with original and -debug version of the codec):
  
  $ gdb /usr/sbin/asterisk
  
  (gdb) r -cvvv
  
  when it crashes do:
  
  (gdb) set disassembly-flavor intel
  
  (32-bit gdb 6.x) disassemble $eip $eip+20
  
  (32-bit gdb 7.x) disassemble $eip, $eip+20
  
  (64-bit gdb 6.x) disassemble $rip $rip+20
  
  (64-bit gdb 7.x) disassemble $rip, $rip+20
  
  (gdb) info registers
  
  (gdb) info threads
  
  (gdb) bt
  
  (gdb) l
  
  (gdb) q
  
  Send an output to Asterisk G.729 Google group together with the result of 'cat /proc/cpuinfo'.
  
  
• Why these Illegal instruction errors?
  
  For in-depth technical information read http://gcc.gnu.org/PR32893 and http://bugs.gentoo.org/show_bug.cgi?id=151394.

Getting help

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