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The Advanced Linux Sound Architecture (ALSA) - library
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Mark Hills 1a169c21af dsnoop: The delay presented to snd_pcm_status_delay() was incorrect 
This was the original bug that caused me to start looking at the
ring buffer functions.

In the API this is documented as:

  "Delay is distance between current application frame position and
   sound frame position. It's positive and less than buffer size in
   normal situation, negative on playback underrun and greater than
   buffer size on capture overrun. "

Because dsnoop was returning the buffer space available to the hardware
the return value was always quite large, and moved in the wrong
direction.

With this patch, dsnoop now gives results which are comparable to using
the "hw" device directly. My test case was with snd-echo3g (Layla3G).

Signed-off-by: Mark Hills <mark@xwax.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-06-23 12:57:08 +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 dsnoop: The delay presented to snd_pcm_status_delay() was incorrect 2020-06-23 12:57:08 +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.