Hi Doron,
'grep -ri ladspa <whatever_path> is a powerful tool that
helped me to find my own 'README_pulseaudio.txt
' file which says:
$ cat -n
/media/sergei/d82573ae-e81f-472b-b2e5-4a9b31777d26/music/GenericBinauralFFTWsp/README_pulseaudio.txt
1 1) edit /etc/pulse/client.conf file to make sure
2
3 autospawn = no
4 .
5
6 Do I really need this ? Only while debugging the plugin
while it crashes to prevent pulseaudio from constantly crashing
and restarting ?
7
8 2) edit /etc/pulse/default.pa file to add to its end
9
10
11 .ifexists module-ladspa-sink.so
12 .nofail
13 load-module module-ladspa-sink
sink_name=GenericBinauralFFTW plugin=GenericBinauralFFTW_1030
label=1030
14 .fail
15 .endif
16
17 . the 'label' field must have the same value as
(*LongEqPlusReverbDescriptor).Label field in the LADSPA plugin
code - pay attention to capital 'L' vs small 'l';
18
19 3) kill pulseaudio with
20
21 pulseaudio -k
22 ;
23
24 4) start pulseaudio with
25
26 (export
LADSPA_PATH=/mnt/althome/sergei/acoustics_work_sp/ladspa;
pulseaudio -vvvvv --start --log-level=4 --log-target=syslog)
27
28 - adjust the
'/mnt/althome/sergei/acoustics_work_sp/ladspa' path as
necessary.
sergei@wdpurple:~
Pay special attention to the possible need to adjust LADSPA_PATH environment variable and to how 'pulseaudio' should be started with the adjusted LADSPA_PATH.
Also, please find attached '/etc/pulse/client.conf', '/etc/pulse/default.pa' files reflecting what's written in the above README file.
--Sergei.
If you read LADSPA specification, you'll see that in a LADSPA plugin there are functions that are called once per plugin lifecycle. You can insert into those functions fprintf(stderr, ...) calls with diagnostic messages to make sure the plugin is indeed instantiated/used.
For that matter, with big enough samples buffer you can insert the same kind of fprintf statements into the 'run' function.
Also, LADSPA plugins should be listed in the PulseAudio configuration file. I did manage to run a pretty sophisticated LADSPA plugin of my own under PulseAudio several years ago; don't have PulseAudio configuration file at the moment at hand right now, maybe I'll find it later.
--Sergei.
On 09/06/2024 1:07, Doron Behar wrote:
Sorry for the late reply :) (I'm not used to mailing lists)
On Mon, Jun 03, 2024 at 09:19:50PM -0700, Sean Greenslade wrote:
On Mon, Jun 03, 2024 at 06:17:59PM +0300, Doron Behar wrote:So I'm using NixOS and our `ladspaPlugins` package distributes the files
I found this program I'd like to use:What distro of Linux are you running?
https://github.com/pulseaudio-equalizer-ladspa/equalizer
I managed to compile and run it, but I don't hear it makes a difference
in the sound. Do I need to enable the `module-ladspa-sink` module? Link:
https://www.freedesktop.org/wiki/Software/PulseAudio/Documentation/User/Modules/#module-ladspa-sink
What makes it difficult for me to figure this out myself, is the
[LADSPA](http://www.ladspa.org/) link, which seems to general, because
this group develop many projects, or which I'm not sure which I should
compile as a pulseaudio plugin (some of which are available in my
distribution.
Thanks for any help in advance.
Eyeballing the Arch package for this equalizer, it looks like it needs
the swh-plugins package for the actual LADSPA plugin itself. It might be
named differently on your distro.
distributed by Arch Linux' `swh-plugins` package.
You shouldn't need to manually load any modules in pulse; this equalizerOK, sounds promising. I'm still a bit confused how it won't output any
script seems to do all the module loading automagically.
error if it doesn't find these plugins at all. Perhaps I'll continue to
discuss this with upstream at:
https://github.com/pulseaudio-equalizer-ladspa/equalizer/issues/58
I will reply again to this thread if I'll learn something new after
discussing there.
Thanks anyway.
# This file is part of PulseAudio. # # PulseAudio is free software; you can redistribute it and/or modify # it under the terms of the GNU Lesser General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # PulseAudio is distributed in the hope that it will be useful, but # WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # General Public License for more details. # # You should have received a copy of the GNU Lesser General Public License # along with PulseAudio; if not, see <http://www.gnu.org/licenses/>. ## Configuration file for PulseAudio clients. See pulse-client.conf(5) for ## more information. Default values are commented out. Use either ; or # for ## commenting. ; default-sink = ; default-source = ; default-server = ; default-dbus-server = autospawn = no ; daemon-binary = /usr/bin/pulseaudio ; extra-arguments = --log-target=syslog ; cookie-file = ; enable-shm = yes ; shm-size-bytes = 0 # setting this 0 will use the system-default, usually 64 MiB ; auto-connect-localhost = no ; auto-connect-display = no
#!/usr/bin/pulseaudio -nF # # This file is part of PulseAudio. # # PulseAudio is free software; you can redistribute it and/or modify it # under the terms of the GNU Lesser General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # PulseAudio is distributed in the hope that it will be useful, but # WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # General Public License for more details. # # You should have received a copy of the GNU Lesser General Public License # along with PulseAudio; if not, see <http://www.gnu.org/licenses/>. # This startup script is used only if PulseAudio is started per-user # (i.e. not in system mode) .fail ### Automatically restore the volume of streams and devices load-module module-device-restore load-module module-stream-restore load-module module-card-restore ### Automatically augment property information from .desktop files ### stored in /usr/share/application load-module module-augment-properties ### Should be after module-*-restore but before module-*-detect load-module module-switch-on-port-available ### Use hot-plugged devices like Bluetooth or USB automatically (LP: #1702794) .ifexists module-switch-on-connect.so load-module module-switch-on-connect .endif ### Load audio drivers statically ### (it's probably better to not load these drivers manually, but instead ### use module-udev-detect -- see below -- for doing this automatically) #load-module module-alsa-sink #load-module module-alsa-source device=hw:1,0 #load-module module-oss device="/dev/dsp" sink_name=output source_name=input #load-module module-oss-mmap device="/dev/dsp" sink_name=output source_name=input #load-module module-null-sink #load-module module-pipe-sink ### Automatically load driver modules depending on the hardware available .ifexists module-udev-detect.so load-module module-udev-detect tsched=0 .else ### Use the static hardware detection module (for systems that lack udev support) load-module module-detect .endif ### Automatically connect sink and source if JACK server is present .ifexists module-jackdbus-detect.so .nofail load-module module-jackdbus-detect channels=2 .fail .endif ### Automatically load driver modules for Bluetooth hardware .ifexists module-bluetooth-policy.so load-module module-bluetooth-policy .endif .ifexists module-bluetooth-discover.so load-module module-bluetooth-discover .endif ### Load several protocols .ifexists module-esound-protocol-unix.so load-module module-esound-protocol-unix .endif load-module module-native-protocol-unix ### Network access (may be configured with paprefs, so leave this commented ### here if you plan to use paprefs) #load-module module-esound-protocol-tcp #load-module module-native-protocol-tcp #load-module module-zeroconf-publish ### Load the RTP receiver module (also configured via paprefs, see above) #load-module module-rtp-recv ### Load the RTP sender module (also configured via paprefs, see above) #load-module module-null-sink sink_name=rtp format=s16be channels=2 rate=44100 sink_properties="device.description='RTP Multicast Sink'" #load-module module-rtp-send source=rtp.monitor ### Load additional modules from GConf settings. This can be configured with the paprefs tool. ### Please keep in mind that the modules configured by paprefs might conflict with manually ### loaded modules. .ifexists module-gconf.so .nofail load-module module-gconf .fail .endif ### Automatically restore the default sink/source when changed by the user ### during runtime ### NOTE: This should be loaded as early as possible so that subsequent modules ### that look up the default sink/source get the right value load-module module-default-device-restore ### Automatically move streams to the default sink if the sink they are ### connected to dies, similar for sources load-module module-rescue-streams ### Make sure we always have a sink around, even if it is a null sink. load-module module-always-sink ### Honour intended role device property load-module module-intended-roles ### Automatically suspend sinks/sources that become idle for too long load-module module-suspend-on-idle ### If autoexit on idle is enabled we want to make sure we only quit ### when no local session needs us anymore. .ifexists module-console-kit.so load-module module-console-kit .endif .ifexists module-systemd-login.so load-module module-systemd-login .endif ### Enable positioned event sounds load-module module-position-event-sounds ### Cork music/video streams when a phone stream is active load-module module-role-cork ### Modules to allow autoloading of filters (such as echo cancellation) ### on demand. module-filter-heuristics tries to determine what filters ### make sense, and module-filter-apply does the heavy-lifting of ### loading modules and rerouting streams. load-module module-filter-heuristics load-module module-filter-apply ### Make some devices default #set-default-sink output #set-default-source input .ifexists module-ladspa-sink.so .nofail load-module module-ladspa-sink sink_name=GenericBinauralFFTW plugin=GenericBinauralFFTW_1030 label=1030 .fail .endif
