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The Advanced Linux Sound Architecture (ALSA) - library
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Mark Hills a510754af2 control: Fix a bug that prevented namehint behaviour 
Looks like the documented behaviour was broken in commit 1ba513f9 in
2006, with the introduction of multiple fields.

I've chosen to match the described behaviour. Prior to this patch,
using namehint could be made to work by exploiting the lack of escaping
of the "name", populating the other fields:

  "plug:front|DESCDo all conversions for front speakers"

rather than that which is documented and presumed to be the intention
for asoundrc files:

  "plug:front|Do all conversions for front speakers"

Everything seems to strongly suggest nobody is using this feature; I can
find no working examples through a web search and probably someone
would have hit this bug. It's not documented in configuration, only in
the snd_device_name_hint() call. So it would probably clutter things to
provide compatibility for the old behaviour.

I have found it to be very useful since working in Chromium, where it is
the only way to expose chosen ALSA devices to web applications.

A temporary buffer is required to null-terminate the string.  I see no
use of alloca() in the code, presumably to avoid unbounded stack size.
So memory is allocated on the heap.

Signed-off-by: Mark Hills <mark@xwax.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-06-23 12:49:36 +02:00
.github/workflows github actions: ubuntu - fix the non-interactive build 2020-06-02 13:16:55 +02:00
alsalisp Change FSF address (Franklin Street) 2017-11-14 14:29:26 +01:00
aserver Use __func__ instead of __FUNCTION__ 2019-06-12 08:52:07 +02:00
doc doxygen: Suppress timestamp 2016-06-23 16:29:07 +02:00
include use-case.h: define Linked variable 2020-06-07 17:41:04 +02:00
m4 Update the attributes.m4 macro file from xine 2020-01-03 19:13:13 +01:00
modules snd_dlopen: implement the relocatable version for glibc 2020-06-04 19:09:58 +02:00
src control: Fix a bug that prevented namehint behaviour 2020-06-23 12:49:36 +02:00
test test: pcm_min - add snd_pcm_drain() call and indentation fixes 2020-05-03 20:07:55 +02:00
utils alsa.m4: another fix to not link all binaries with -latopology 2020-02-18 19:45:19 +01:00
.gitignore initial version of .travis.yml file 2018-10-24 16:07:58 +02:00
.travis.yml initial version of .travis.yml file 2018-10-24 16:07:58 +02:00
acinclude.m4 fixed for the recent autoconf. 2004-01-26 15:52:17 +00:00
ChangeLog * update to libtool 1.3.3 1999-07-22 12:18:42 +00:00
configure.ac Release v1.2.3.1 2020-06-18 19:24:32 +02:00
COPYING Change FSF address (Franklin Street) 2017-11-14 14:29:26 +01:00
gitcompile add support for GCC's LTO 2019-04-09 12:44:14 +02:00
INSTALL pcm: Add thread-safety to PCM API 2016-07-11 15:25:30 +02:00
Makefile.am create separated libatopology library with the topology routines 2019-11-14 15:01:12 +01:00
MEMORY-LEAK Initial version 2003-02-04 14:56:07 +00:00
NOTES Change assert condition in error message handler 2007-10-24 12:53:08 +02:00
README.md README.md: add build status badge 2020-02-18 15:04:52 +01:00
TODO Added snd_config_load_override(). 2002-01-09 21:28:15 +00:00

README.md

alsa-lib

Advanced Linux Sound Architecture (ALSA) project

Build alsa-lib

The alsa-lib is a library to interface with ALSA in the Linux kernel and virtual devices using a plugin system.

The up-to-date reference generated from sources can be accessed here:

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

You may give a look for more information about the ALSA project to URL http://www.alsa-project.org.