Re: ac3 / dts output

Wed Jul 03 2002, Torgeir Veimo wrote:
> I guess a 1.0 release could include raw ac3 / dts playback? 
> 
> I don't think it should be that hard. The issues are packaging / padding
> the frames properly, and outputing through the correct alsa device. Some
> code could be reused from xine.
> 
> I haven't look at ogle since pre v8.3. Is the configuration handling
> improved? I would like to add support for A52_ADJUST_LEVEL.
> 
It's already there, was included in 0.8.3.  See man oglerc.
Excerpt:

       <audio>
         <liba52>
           <downmix_level>1.5</downmix_level>
           <drc>no</drc>
         </liba52>
       </audio>

     <liba52>
       Contains liba52 specific settings (for ac3 audio)
       <downmix_level>
           Is used to multiply the samples when  downmixing  from
           multichannel sound to stereo. For a full 5.1 track the
           value should be somewhere around 1.5 if  you  want  to
           increase  the  volume  a bit. Be aware that using this
           setting can result in clipping if values  larger  than
           1.0  are  used.  This  has no effect on stereo tracks.
           Values lower than 1.0 will decrease the volume.
       <drc>
           This will turn on dynamic range compression if set  to
           'yes'.  DRC  will  lower the volume of loud sounds and
           raise the volume for soft sounds.

-- 
Håkan Hjort