<synopsis>
<p><file>~/.pulse/daemon.conf</file></p>
- <p><file>@pulseconfdir@/daemon.conf</file></p>
+ <p><file>@PA_DEFAULT_CONFIG_DIR@/daemon.conf</file></p>
</synopsis>
<description>
<p>The PulseAudio sound server reads configuration directives from
a file <file>~/.pulse/daemon.conf</file> on startup and when that
file doesn't exist from
- <file>@pulseconfdir@/daemon.conf</file>. Please note that the
+ <file>@PA_DEFAULT_CONFIG_DIR@/daemon.conf</file>. Please note that the
server also reads a configuration script on startup
<file>default.pa</file> which also contains runtime configuration
directives.</p>
<option>
<p><opt>daemonize= </opt> Daemonize after startup. Takes a
- boolean value, defaults to "no". The <opt>--daemonize</opt>
+ boolean value, defaults to <opt>no</opt>. The <opt>--daemonize</opt>
command line option takes precedence.</p>
</option>
<option>
<p><opt>fail=</opt> Fail to start up if any of the directives
in the configuration script <file>default.pa</file>
- fail. Takes a boolean argument, defaults to "yes". The <opt>--fail</opt> command line
+ fail. Takes a boolean argument, defaults to <opt>yes</opt>. The <opt>--fail</opt> command line
option takes precedence.</p>
</option>
<option>
- <p><opt>disallow-module-loading=</opt> Disallow module loading
- after startup. This is a security feature that makes sure that
- no further modules may be loaded into the PulseAudio server
- after startup completed. It is recommended to enable this when
- <opt>system-instance</opt> is enabled. Please note that certain
- features like automatic hot-plug support will not work if this
- option is enabled. Takes a boolean argument, defaults to
- <opt>no</opt>. The <opt>--disallow-module-loading</opt> command line
- option takes precedence.</p>
+ <p><opt>allow-module-loading=</opt> Allow/disallow module
+ loading after startup. This is a security feature that if
+ dsabled makes sure that no further modules may be loaded into
+ the PulseAudio server after startup completed. It is recommended
+ to disable this when <opt>system-instance</opt> is
+ enabled. Please note that certain features like automatic
+ hot-plug support will not work if this option is enabled. Takes
+ a boolean argument, defaults to <opt>yes</opt>. The
+ <opt>--disallow-module-loading</opt> command line option takes
+ precedence.</p>
</option>
<option>
- <p><opt>disallow-exit=</opt> Disallow exit on user
- request. Defaults to <opt>no</opt>.</p>
+ <p><opt>allow-exit=</opt> Allow/disallow exit on user
+ request. Defaults to <opt>yes</opt>.</p>
</option>
<option>
<opt>src-zero-order-hold</opt>, <opt>src-linear</opt>,
<opt>trivial</opt>, <opt>speex-float-N</opt>,
<opt>speex-fixed-N</opt>, <opt>ffmpeg</opt>. See the
- documentation of libsamplerate for an explanation for the
- different src- methods. The method <opt>trivial</opt> is the most basic
- algorithm implemented. If you're tight on CPU consider using
- this. On the other hand it has the worst quality of them
- all. The Speex resamplers take an integer quality setting in the
- range 0..9 (bad...good). They exist in two flavours: <opt>fixed</opt> and
- <opt>float</opt>. The former uses fixed point numbers, the latter relies on
- floating point numbers. On most desktop CPUs the float point
- resmampler is a lot faster, and it also offers slightly better
- quality. See the output of <opt>dump-resample-methods</opt> for
- a complete list of all available resamplers. Defaults to
- <opt>speex-float-3</opt>. The <opt>--resample-method</opt>
- command line option takes precedence. Note that some modules
- overwrite or allow overwriting of the resampler to use.</p>
+ documentation of libsamplerate and speex for explanations of the
+ different src- and speex- methods, respectively. The method
+ <opt>trivial</opt> is the most basic algorithm implemented. If
+ you're tight on CPU consider using this. On the other hand it has
+ the worst quality of them all. The Speex resamplers take an
+ integer quality setting in the range 0..10 (bad...good). They
+ exist in two flavours: <opt>fixed</opt> and <opt>float</opt>. The former uses fixed point
+ numbers, the latter relies on floating point numbers. On most
+ desktop CPUs the float point resampler is a lot faster, and it
+ also offers slightly better quality. See the output of
+ <opt>dump-resample-methods</opt> for a complete list of all
+ available resamplers. Defaults to <opt>speex-float-3</opt>. The
+ <opt>--resample-method</opt> command line option takes precedence.
+ Note that some modules overwrite or allow overwriting of the
+ resampler to use.</p>
</option>
<option>
- <p><opt>disable-remixing=</opt> Never upmix or downmix channels
- to different channel maps. Instead, do a simple name-based
- matching only.</p>
+ <p><opt>enable-remixing=</opt> If disabled never upmix or
+ downmix channels to different channel maps. Instead, do a simple
+ name-based matching only. Defaults to <opt>yes.</opt></p>
</option>
<option>
- <p><opt>disable-lfe-remixing=</opt> When upmixing or downmixing
- ignore LFE channels. When this option is on the output LFE
- channel will only get a signal when an input LFE channel is
- available as well. If no input LFE channel is available the
- output LFE channel will always be 0. If no output LFE channel is
- available the signal on the input LFE channel will be
- ignored. Defaults to "on".</p>
+ <p><opt>enable-lfe-remixing=</opt> if disabeld when upmixing or
+ downmixing ignore LFE channels. When this option is dsabled the
+ output LFE channel will only get a signal when an input LFE
+ channel is available as well. If no input LFE channel is
+ available the output LFE channel will always be 0. If no output
+ LFE channel is available the signal on the input LFE channel
+ will be ignored. Defaults to <opt>no</opt>.</p>
</option>
<option>
- <p><opt>use-pid-file=</opt> Create a PID file in
- <file>/tmp/pulse-$USER/pid</file>. Of this is enabled you may
+ <p><opt>use-pid-file=</opt> Create a PID file in the runtime directory
+ (<file>$HOME/.pulse/*-runtime/pid</file>). If this is enabled you may
use commands like <opt>--kill</opt> or <opt>--check</opt>. If
you are planning to start more than one PulseAudio process per
user, you better disable this option since it effectively
disables multiple instances. Takes a boolean argument, defaults
- to <opt>yes</opt>. The <opt>--no-cpu-limit</opt> command line
+ to <opt>yes</opt>. The <opt>--use-pid-file</opt> command line
option takes precedence.</p>
</option>
<option>
- <p><opt>no-cpu-limit=</opt> Do not install the CPU load limiter,
- even on platforms where it is supported. This option is useful
- when debugging/profiling PulseAudio to disable disturbing
- SIGXCPU signals. Takes a boolean argument, defaults to <opt>no</opt>. The
- <opt>--no-cpu-limit</opt> command line argument takes
- precedence.</p>
+ <p><opt>cpu-limit=</opt> If disabled do not install the CPU load
+ limiter, even on platforms where it is supported. This option is
+ useful when debugging/profiling PulseAudio to disable disturbing
+ SIGXCPU signals. Takes a boolean argument, defaults to
+ <opt>no</opt>. The <opt>--no-cpu-limit</opt> command line
+ argument takes precedence.</p>
</option>
<option>
</option>
<option>
- <p><opt>disable-shm=</opt> Disable data transfer via POSIX
+ <p><opt>enable-shm=</opt> Enable data transfer via POSIX
shared memory. Takes a boolean argument, defaults to
- <opt>no</opt>. The <opt>--disable-shm</opt> command line
+ <opt>yes</opt>. The <opt>--disable-shm</opt> command line
argument takes precedence.</p>
</option>
RLIMIT_NICE is used. root is dropped immediately after gaining
the nice level on startup, thus it is presumably safe. See
<manref section="1" name="pulseaudio"/> for more
- information. Takes a boolean argument, defaults to "yes". The <opt>--high-priority</opt>
+ information. Takes a boolean argument, defaults to <opt>yes</opt>. The <opt>--high-priority</opt>
command line option takes precedence.</p>
</option>
real-time. The controlling thread is left a normally scheduled
thread. Thus enabling the high-priority option is orthogonal.
See <manref section="1" name="pulseaudio"/> for more
- information. Takes a boolean argument, defaults to "no". The
+ information. Takes a boolean argument, defaults to <opt>yes</opt>. The
<opt>--realtime</opt> command line option takes precedence.</p>
</option>
by default, 9 for clients. Thus it is recommended to choose the
PulseAudio real-time priorities lower. Some PulseAudio threads
might choose a priority a little lower or higher than the
- specified value. Defaults to "5".</p>
+ specified value. Defaults to <opt>5</opt>.</p>
</option>
<option>
<option>
<p><opt>exit-idle-time=</opt> Terminate the daemon after the
last client quit and this time in seconds passed. Use a negative value to
- disable this feature. Defaults to -1. The
+ disable this feature. Defaults to 20. The
<opt>--exit-idle-time</opt> command line option takes
precedence.</p>
</option>
default script file. The default behaviour is to load
<file>~/.pulse/default.pa</file>, and if that file does not
exist fall back to the system wide installed version
- <file>@pulseconfdir@/default.pa</file>. If run in system-wide
- mode the file <file>@pulseconfdir@/system.pa</file> is used
+ <file>@PA_DEFAULT_CONFIG_DIR@/default.pa</file>. If run in system-wide
+ mode the file <file>@PA_DEFAULT_CONFIG_DIR@/system.pa</file> is used
instead. If <opt>-n</opt> is passed on the command line
or <opt>default-script-file=</opt> is disabled the default
configuration script is ignored.</p>
<option>
<p><opt>default-sample-format=</opt> The default sampling
format. Specify one of <opt>u8</opt>, <opt>s16le</opt>,
- <opt>s16be</opt>, <opt>s32le</opt>,
- <opt>s32be</opt>, <opt>float32le</opt>, <opt>float32be</opt>,
+ <opt>s16be</opt>, <opt>s24le</opt>, <opt>s24be</opt>,
+ <opt>s24-32le</opt>, <opt>s24-32be</opt>, <opt>s32le</opt>,
+ <opt>s32be</opt> <opt>float32le</opt>, <opt>float32be</opt>,
<opt>ulaw</opt>, <opt>alaw</opt>. Depending on the endianess of
- the CPU the
- formats <opt>s16ne</opt>, <opt>s16re</opt>, <opt>s32ne</opt>, <opt>s32re</opt>,
+ the CPU the formats <opt>s16ne</opt>, <opt>s16re</opt>,
+ <opt>s24ne</opt>, <opt>s24re</opt>, <opt>s24-32ne</opt>,
+ <opt>s24-32re</opt>, <opt>s32ne</opt>, <opt>s32re</opt>,
<opt>float32ne</opt>, <opt>float32re</opt> (for native,
resp. reverse endian) are available as aliases.</p>
</option>
<p><opt>default-channel-map</opt> The default channel map.</p>
</option>
+ <option>
+ <p><opt>alternate-sample-rate</opt> The alternate sample
+ frequency. Sinks and sources will use either the
+ default-rate-rate value or this alternate value, typically 44.1
+ or 48kHz. Switching between default and alternate values is
+ enabled only when the sinks/sources are suspended. This option
+ is ignored in passthrough mode where the stream rate will be used.</p>
+ </option>
+
</section>
<section name="Default Fragment Settings">
these buffer metrics for machines with high scheduling
latencies. Not all possible values that may be configured here are
available in all hardware. The driver will to find the nearest
- setting supported.</p>
+ setting supported. Modern drivers that support timer-based
+ scheduling ignore these options.</p>
<option>
<p><opt>default-fragments=</opt> The default number of
</section>
+ <section name="Default Deferred Volume Settings">
+
+ <p>With the flat volume feature enabled, the sink HW volume is set
+ to the same level as the highest volume input stream. Any other streams
+ (with lower volumes) have the appropriate adjustment applied in SW to
+ bring them to the correct overall level. Sadly hadware mixer changes
+ cannot be timed accurately and thus this change of volumes can somtimes
+ cause the resulting output sound to be momentarily too loud or too soft.
+ So to ensure SW and HW volumes are applied concurrently without any
+ glitches, their application needs to be synchronized. The sink
+ implementation needs to support deferred volumes. The following
+ parameters can be used to refine the process.</p>
+
+ <option>
+ <p><opt>enable-deferred-volume=</opt> Enable deferred volume for the sinks that
+ support it. This feature is enabled by default.</p>
+ </option>
+ <option>
+ <p><opt>deferred-volume-safety-margin-usec=</opt> The amount of time (in
+ usec) by which the HW volume increases are delayed and HW volume
+ decreases are advanced. Defaults to 8000 usec.</p>
+ </option>
+ <option>
+ <p><opt>deferred-volume-extra-delay-usec=</opt> The amount of time (in usec)
+ by which HW volume changes are delayed. Negative values are also allowed.
+ Defaults to 0.</p>
+ </option>
+
+ </section>
+
<section name="Authors">
<p>The PulseAudio Developers <@PACKAGE_BUGREPORT@>; PulseAudio is available from <url href="@PACKAGE_URL@"/></p>
</section>