[Asterisk-Users] Why does * only work with an ancient mpg123?

[Eric Wieling aka ManxPower]

Remco Barende wrote:
> Hi list!
> 
> Just wondering, why is * sticking with an mpg123 version from the stoneage?
> 
> Gentoo comes with 0.59s-r8 and this version doesn't even start.
> 
> Ik know I could forcibly unmerge mpg123 and install the old version but 
> I guess some day newer versions will have to be supported?

Asterisk sets the following mpg123 options:

"mpg123 -q -s --mono -r 8000 -b 2048 -f 4096"

-q, --quiet  Quiet.  Suppress diagnostic messages.

-s, --stdout  The decoded  audio  samples  are  written  to  standard 
output, instead  of  playing them through the audio device.  This option
must be used if your audio hardware is not supported by  mpg123.
The  output format is raw (headerless) linear PCM audio data, 16
bit, stereo, host byte order.

-r rate, --rate rate  Set sample rate (default: automatic).  You may 
want  to  change this  if  you  need  a  constant  bitrate independed of 
the mpeg stream rate. mpg123 automagically converts the rate. You 
should then combine this with --stereo or --mono.

-b size, --buffer size  Use an audio output buffer of size Kbytes.  This 
  is  useful  to bypass  short periods of heavy system activity, which 
would normally cause the audio output  to  be  interrupted.   You 
should specify  a buffer size of at least 1024 (i.e. 1 Mb, which equals 
about 6 seconds of audio data) or more; less than about 300 does not 
make  much  sense.  The default is 0, which turns buffering off.

-f factor, --scale factor  Change scale factor (default: 32768).

Pretty much any program that accepts these options to generate raw 
(headerless) linear PCM audio data, 16 bit, mono, host byte order, at 
8khz to stdout will work.  At this time the only one that does this that 
I know is mpg123 0.59r