30 Aug
2010
30 Aug
'10
4:11 p.m.
On Mon, 30 Aug 2010, Kim Therkelsen wrote:
>> The idea is that I perform the same processing no matter what user
>> application is used to playback the audio/video.
>> The plugin must receive the raw six (or eight) channel audio PCM stream.
>> So I do not want to make the DSP processing specific to some special
>> application only.
[snip]
I want to use the solution in Meego, Android, and Google
Chrome OS - if possible. I do not know what applications
MeeGo: pulseaudio or ALSA
Google: pulseaudio or ALSA (AFAIK)
With Android, Linux is just a prop to get the JVM started...
so your solution will probably need to be in Java there.
All the operating systems are based on Linux so they
must
have something in common regarding the audio chain (such
as ALSA) where I can plug our DSP code in.
PulseAudio: if you implement it here, you will probably get
the most bang for your buck... and it is more likely to
integrate well into the end-user's system. However,
PulseAudio is not a "universal" solution for Linux. (For
example, Pro Audio users will often uninstall PulseAudio
from their systems.)
ALSA: ALSA /is/ universal to Linux and is definately capable
of doing this task. You'll probably want to implement it as
an ALSA plug-in. However, the end-user experience is
usually not as slick and (IMHO) the ALSA API is a fickle
friend. Also, more times than not I hear people say, "DON'T
use the ______ ALSA plug-in. It's totally broken. Instead
use [SOME USER APPLICATION ALTERNATIVE]."
-gabriel