Beyond Linux® From Scratch - Version svn-20091121

Chapter 35. Multimedia Libraries and Drivers

ALSA Plugins-1.0.21

Introduction to ALSA Plugins

The ALSA Plugins package contains plugins for various audio libraries and sound servers.

This package is known to build using an LFS 6.5 platform but has not been tested.

Package Information

ALSA Plugins Dependencies

Required

ALSA Library-1.0.21

Optional

FFmpeg-svn_20070606, Speex-1.0.5, JACK, PulseAudio, and Secret Rabbit Code (a.k.a. libsamplerate)

User Notes: http://wiki.linuxfromscratch.org/blfs/wiki/alsa-plugins

Installation of ALSA Plugins

Install ALSA Plugins by running the following commands: 

./configure &&
make

This package does not come with a test suite.

Now, as the root user: 

make install &&
install -v -m755 -d /usr/share/doc/alsa-plugins-1.0.21 &&
install -v -m644 doc/{README*,*.txt} \
                    /usr/share/doc/alsa-plugins-1.0.21

Contents

Installed Programs: None
Installed Libraries: Numerous libasound_module_<module>.so modules including ctl_oss, pcm_oss, pcm_upmix, pcm_usb_stream, pcm_vdownmix, rate_speexrate, rate_speexrate_best, rate_speexrate_medium, and optionally ctl_pulse, pcm_pulse, pcm_a52, pcm_jack and rate_samplerate*
Installed Directory: /usr/share/doc/alsa-plugins-1.0.21

Short Descriptions

libasound_module_pcm_oss.so

Allows native ALSA applications to run on OSS.

libasound_module_pcm_upmix.so

Allows upmixing sound to 4 or 6 channels.

libasound_module_pcm_vdownmix.so

Allows downmixing sound from 4-6 channels to 2 channel stereo output.

libasound_module_pcm_jack.so

Allows native ALSA applications to work with jackd.

libasound_module_pcm_pulse.so

Allows native ALSA applications to access a PulseAudio sound daemon.

libasound_module_pcm_a52.so

Converts S16 linear sound format to A52 compressed format and sends it to an SPDIF output.

libasound_module_rate_samplerate.so

Provides an external rate converter through libsamplerate.

Last updated on 2009-09-08 00:55:14 +0000