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Takashi Sakamoto 5287f09f06 alsa: remove double calls of snd_pcm_prepare() 
In alsa-lib, snd_pcm_hw_params() internally calls snd_pcm_prepare(), thus
user space applications have no need to call snd_pcm_prepare() after calls
of snd_pcm_hw_params(). An explicit calls of snd_pcm_prepare() is expected
in a case to recover PCM substreams.

Current implementation of PulseAudio modules for ALSA playbacking/capturing
results in double calls of snd_pcm_prepare(). The second call for hw plugin
of alsa-lib executes ioctl(2) with SNDRV_PCM_IOCTL_PREPARE command in state
of SNDRV_PCM_STATE_PREPARED for the PCM substream. This has no effects to
the PCM substream as long as corresponding drivers are implemented
correctly.

This commit removes the second call for the reason.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
2017-01-19 03:00:45 +02:00
doc doc: Add an example stream-restore fallback table file. 2011-10-01 13:25:16 +01:00
doxygen update FSF addresses to FSF web page 2015-01-14 22:20:40 +02:00
m4 build-sys: Move to compiling with C11 support 2016-02-25 09:09:13 +05:30
man daemon-conf: changed 'not' to 'note' 2017-01-13 05:02:24 +02:00
po i18n: add Lithuanian translation 2017-01-06 21:02:06 +02:00
scripts scripts: Plot memory benchmarks using gnuplot 2015-10-31 15:29:48 +02:00
shell-completion shell-completion: update zsh completion for pasuspender 2017-01-19 03:00:45 +02:00
src alsa: remove double calls of snd_pcm_prepare() 2017-01-19 03:00:45 +02:00
vala vala: Added cnames to callback delegates in Vala VAPI 2016-01-22 13:25:29 +05:30
.gitignore gitignore: Add .orig and .rej to gitignore 2015-12-18 13:34:46 +01:00
.mailmap add a .mailmap file for git shortlog 2009-02-04 22:41:45 +01:00
.travis.yml travis: Run make install in travis. 2015-12-29 05:36:50 +05:30
AGPL LICENSE: add a note about qpaeq being licensed under AGPL 2017-01-03 04:21:38 +02:00
autogen.sh update FSF addresses to FSF web page 2015-01-14 22:20:40 +02:00
bootstrap.sh build-sys: Don't override libtoolize 2017-01-19 03:00:45 +02:00
configure.ac padsp: allow overriding library install location 2017-01-19 03:00:45 +02:00
git-version-gen git-version-gen: Avoid further processing when tarball-version is present 2015-10-20 16:55:23 +02:00
GPL * rename "LICENSE" to "LGPL" 2006-04-20 12:33:00 +00:00
LGPL * rename "LICENSE" to "LGPL" 2006-04-20 12:33:00 +00:00
libpulse-mainloop-glib.pc.in build: Fix static linking 2012-07-17 11:05:34 +05:30
libpulse-simple.pc.in build: Fix static linking 2012-07-17 11:05:34 +05:30
libpulse.pc.in build: Fix static linking 2012-07-17 11:05:34 +05:30
LICENSE LICENSE: add a note about qpaeq being licensed under AGPL 2017-01-03 04:21:38 +02:00
Makefile.am build-sys: add the AGPL license file to tarballs 2017-01-18 05:45:11 +02:00
NEWS update NEWS 2017-01-18 05:43:37 +02:00
orc.mak build-sys: Move ORC_SOURCE definitions outside of "if HAVE_ORC" 2014-01-24 22:56:27 +02:00
PROTOCOL protocol-native: Don't signal memfd support for 9.0 clients 2016-11-19 15:11:59 +02:00
pulseaudio-text.svg merge 'lennart' branch back into trunk. 2007-10-28 19:13:50 +00:00
pulseaudio.supp Add a Valgrind suppression file 2014-09-21 11:00:51 +03:00
pulseaudio.svg Add PulseAudio logo to tree. 2006-08-28 06:25:41 +00:00
PulseAudioConfig.cmake.in build-sys: Provide a simple CMake Config setup (similar to pkgconfig) 2011-10-19 23:49:23 +01:00
PulseAudioConfigVersion.cmake.in build-sys: Provide a simple CMake Config setup (similar to pkgconfig) 2011-10-19 23:49:23 +01:00
README Remove link to CIA from README 2014-10-28 17:36:21 +01:00
todo Update todo 2011-06-24 00:35:26 +01:00

README 

PULSEAUDIO SOUND SERVER

WEB SITE:
	http://pulseaudio.org/

GIT:
	git://anongit.freedesktop.org/pulseaudio/pulseaudio

GITWEB/CGIT:
	http://cgit.freedesktop.org/pulseaudio/pulseaudio/

MAILING LIST:
	http://lists.freedesktop.org/mailman/listinfo/pulseaudio-discuss

GIT COMMITS MAILING LIST:
	http://lists.freedesktop.org/mailman/listinfo/pulseaudio-commits

TRAC/BUGZILLA TICKET CHANGES MAILING LIST:
	http://lists.freedesktop.org/mailman/listinfo/pulseaudio-bugs

IRC:
	#pulseaudio on irc.freenode.org

FRESHMEAT:
	http://freshmeat.net/projects/pulseaudio/

OHLOH:
	http://www.ohloh.net/projects/4038

AUTHORS:
	Several

HACKING:
	In order to run pulseaudio from the build dir __OPTIMIZE__ should be
	disabled (look at src/pulsecore/core-util.h::pa_run_from_build_tree()),
	this can be done by passing "CFLAGS=-O0" to the configure script:
	  ./autogen.sh
	  CFLAGS="-ggdb3 -O0" LDFLAGS="-ggdb3" ./configure
	  make
	  ./src/pulseaudio -n -F src/default.pa -p $(pwd)/src/

SPELLING:
        PulseAudio