Update of /cvsroot/alsa/alsa-oss/oss-redir
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv12436
Added Files:
README
Log Message:
Initial
--- NEW FILE: README ---
Open Sound System call redirector
=================================
The purpose of this little piece of code is to redirect
OSS (Open Sound System) calls to any shared library to avoid
overhead caused with the LD_PRELOAD wrapper. Especially,
wrapping select() and poll() functions cause big overhead.
In ideal world, all OSS programs will use this little code
to allow a sound emulation for OSS based APIs without requirement
of ugly LD_PRELOAD hacks.
Usage
=====
Set environment variable OSS_REDIRECTOR to name of dynamic library
with lib_oss_* public functions. For example (ALSA):
export OSS_REDIRECTOR=libalsatoss.so
If this variable is not set, or this value is "oss" or "OSS",
the direct system calls are used.
Porting OSS application to use this code
========================================
All functions have equivalent as using syscalls. Only one exception
is select() or poll() usage. It is required to use oss_pcm_select*()
or oss_pcm_poll*() wrappers to determine the "real" used file
descriptors and mangle back the result.
Note that the *prepare() functions returns the count of file
descriptors allocated (poll) or the maximum used file descriptor
(select).
Porting example
===============
FIXME: Add a link to a good patch.
-------------------------------------------------------
SF.Net is sponsored by: Speed Start Your Linux Apps Now.
Build and deploy apps & Web services for Linux with
a free DVD software kit from IBM. Click Now!
http://ads.osdn.com/?ad_id=1356&alloc_id=3438&op=click
_______________________________________________
Alsa-cvslog mailing list
[EMAIL PROTECTED]
https://lists.sourceforge.net/lists/listinfo/alsa-cvslog
