On Mon, August 30, 2010 5:48 am, Kim Therkelsen wrote: > >> > I have tried loading the LADSPA-module using the module-ladspa-sink in >> > PulseAudio but I am not sure this is the best solution. >> >> It is the recommended solution if you are using PA for your sound >> server. > > Why is it better than loading it using the ALSA LADSPA plugin loader > module? > To me it seems better to load it into ALSA because it does not depend on > whether PulseAudio is used or not. > If it should be used in different Linux based operating systems I can not > always rely on PulseAudio being present. > >> > 2) Must be able to process stereo and multichannel (5.1/7.1) formats. >> I >> > need the multichannel formats to perform binaural downmixing to >> > stereo. >> >> I'm not sure how the dolby multichannel support is in ALSA. It may >> depend >> on the internal capabilities of the device. >> >> > So it is important that I can receive multichannel audio and mix it >> down >> > to stereo and output it to a stereo soundcard. >> > >> >> This may better handled in app. > > 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. >
It's a noble goal but as you are attempting to cater to such a varied range of systems that it is hard to recommend a perfect solution. You should really isolate the core requirements and minimum apps that it will work with then it will be easier for people to make a suggestion that fits your needs. -- Patrick Shirkey Boost Hardware Ltd. _______________________________________________ Linux-audio-dev mailing list [email protected] http://lists.linuxaudio.org/listinfo/linux-audio-dev
