Need help about libraries

russoue · 10-07-2004, 07:21 AM

What are the best libraries about sound and video programming in Linux?
I heard about OSS for sound and video4linux for video. Are there any better?

max_sipos · 10-07-2004, 11:36 AM

ALSA (andvanced Linux sound architecture) is more recent than OSS and pretty much standard nowadays.

shengchieh · 10-07-2004, 04:04 PM

Yup, ALSA is the one. Here's the link.

http://www.alsa-project.org/

Sheng-Chieh

russoue · 10-07-2004, 10:59 PM

Do I have to know Jack and LADSPA?
What are there functions?

mikshaw · 10-08-2004, 10:17 AM

This is just the very basic (and possibly inaccurate) knowledge I have:
JACK is an application which allows interaction with several audio programs at once. Some programs, such as Ardour, require it. Some programs require it only if you use ALSA. Some programs apparently can use it but don't require it.
LADSPA is a plugin architecture. Have you heard of VST? I think this is similar.

russoue · 10-08-2004, 10:03 PM

I haven't heard about VST.

Do I have to know/learn JACK and/or LADSPA to do audio programming with ALSA?

russoue · 10-09-2004, 02:48 AM

I tried to run a very simple capture program with ALSA. But the following line:

snd_pcm_open(&capture_handle, "plughw:0,0", SND_PCM_STREAM_CAPTURE, 0)

returns error:

"No such file or directory"

Can anybody help me about that? I installed the "alsa-lib-1.0.6" and faced no problem during installation. Do I have to install any special driver for soundcard? I haven't installed anything for soundcard.

russoue · 10-09-2004, 08:24 AM

I also checked the "configure" and "make install" commands' output and found no problem there.