[Cbe-oss-dev] snd_ps3pf: PS3 ALSA Sound Driver, Support for AC3/DTS Passthrough
m.bevand at gmail.com
Sun Mar 18 12:45:52 EST 2007
The latest publicly released version of the snd_ps3pf ALSA sound driver
for playstation 3 can be found in the kernel source tree linux-20061208
published there  (derived from 2.6.16, as I understand it). Geoff Levand
has not yet integrated the driver into his git tree on kernel.org .
According to the very limited public documentation about the sound
chip available on , it looks like it probably supports AC3/DTS
passthrough however  does not implement this feature. I have
looked at the source code and am not very familiar with the ALSA API
but it seems that adding support for this feature would just require
the implementation of a new snd_kcontrol_new named "IEC958
Playback Default" whose purpose would be to set some control bits
in the frames sent over the S/PDIF output. This can probably be done
in only 100-200 lines of code.
I have 2 questions:
o Does Sony plan to add support for AC3/DTS passthrough in the near
future ? It doesn't look like a complex task.
o When will snd_ps3pf be ported to the git tree  ?
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