writing an alsa driver for an MPEG decoder chip

[Nicolas Boullis <nboullis@debian.org>]

Hi,

I am a member of the dxr3 project, that tries to write a linux driver 
for the MPEG decoder em8300 chip that is mainly used in Sigma Design's 
Hollywood+ and Creative Labs DXR3 boards.
This chip handles hardware decoding of MPEG video, but is also able do 
perform some limited audio playback.
We corrently have a working OSS interface for the audio playbak, that 
I'd like to replace with an ALSA one.
I tried to write one, using Takashi Iwai's excellent "Writing an ALSA 
Driver" guide. Unfortunately, the driver that I managed to write seems 
to work fine when playing sound with xmms, but all other apps that I 
tried failed to get any sound.

Anyone can help me figure out whet I missed?
You can grab the relevant file at
http://dxr3.sourceforge.net/download/em8300_alsa.c

Thanks in advance,

Nicolas Boullis


PS: I am not subscribed to this list, please CC replies to me.


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