I want to build a list of the audiovisualiser elements to be able to offer them in a dropdown list within a python program and same for audio effects but how do you access the gstreamer-1.0 registry.
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The solution was simple and yet it took an age to find it.
Here is some sample code to illustrate the method.
Updated to python3
#!/usr/bin/env python3
#Access the registry to find out what plugins are available
#list elements within a plugin
#list all elements within a Klass
import gi
gi.require_version('Gst', '1.0')
from gi.repository import Gst
Gst.init(None)
reg = Gst.Registry.get()
print ("List Available Plugins\n")
for x in reg.get_plugin_list():
print (x.get_name())
print ("End Available Plugins\n")
print ("List Plugins in AudioVisual\n")
for x in reg.get_feature_list_by_plugin("audiovisualizers"):
print(x.get_name(), "\t", x.get_longname())
print ("END\n")
print ("All Available visualisations\n")
vis_list = [filt for filt in reg.get_feature_list(Gst.ElementFactory) \
if (filt.get_klass().find("Visualization") >= 0)]
for x in vis_list:
short = x.get_name()
name = x.get_longname()
print (short + "\t\t" + name)
print ("END\n")
print ("All Available Audio filters\n")
audio_filter_list = [filt for filt in reg.get_feature_list(Gst.ElementFactory) \
if (filt.get_klass().find("Filter/Effect/Audio") >= 0)]
for x in audio_filter_list:
short = x.get_name()
name = x.get_longname()
print (short + "\t\t" + name)
print ("END\n")
Results on my machine (with ladspa audio plugins loaded) your results may differ:
List Available Plugins
vaapi
libav
ladspa
gtk
gio
lv2
mms
id3tag
mpegtsmux
ivtc
bs2b
rtmp
aom
webrtc
rtponvif
fluidsynthmidi
mxf
dvdspu
videoparsersbad
realmedia
siren
pcapparse
asfmux
videofiltersbad
dtls
netsim
ivfparse
debugutilsbad
rfbsrc
dvdsub
pnm
gdp
mplex
bluez
flite
audiofxbad
dvdlpcmdec
shm
voamrwbenc
hls
dvdread
y4mdec
freeverb
gsm
webrtcdsp
ipcpipeline
kms
ttmlsubs
legacyrawparse
audiolatency
adpcmenc
de265
coloreffects
zbar
cdio
openexr
autoconvert
srt
a52dec
uvch264
dvbsuboverlay
x264
dashdemux
gme
frei0r
inter
geometrictransform
videoframe_audiolevel
dc1394
fbdevsink
faad
aiff
yadif
accurip
xingmux
audiovisualizers
dvb
midi
srtp
colormanagement
spandsp
mpeg2enc
dtsdec
vmnc
smooth
adpcmdec
openjpeg
timecode
segmentclip
faceoverlay
rsvg
festival
interlace
mpegpsmux
proxy
chromaprint
videosignal
audiomixmatrix
soundtouch
kate
asf
closedcaption
speed
bz2
openmpt
openal
mpegpsdemux
mpegtsdemux
modplug
assrender
smoothstreaming
teletext
amrwbdec
decklink
musepack
gaudieffects
mpeg2dec
x265
resindvd
wildmidi
curl
bayer
sdpelem
opusparse
webp
fieldanalysis
voaacenc
waylandsink
sbc
sid
jp2kdecimator
vulkan
sndfile
ofa
removesilence
subenc
audiobuffersplit
sctp
amrnb
cluttergst3
twolame
oss4
audiorate
alsa
rtp
gdkpixbuf
playback
ximagesrc
png
taglib
multipart
udp
opus
y4menc
videorate
cutter
jpeg
cairo
level
flxdec
videotestsrc
volume
cdparanoia
monoscope
lame
coreelements
opengl
id3demux
shout2
vpx
navigationtest
libvisual
app
ossaudio
video4linux2
audiofx
dv
coretracers
wavenc
xvimagesink
pulseaudio
pango
rtsp
alaw
wavpack
avi
tcp
subparse
replaygain
cacasink
speex
videobox
multifile
audioresample
auparse
camerabin
compositor
alpha
overlaycomposition
pbtypes
jpegformat
alphacolor
mulaw
aasink
equalizer
dtmf
goom2k1
videofilter
matroska
videoscale
audioparsers
wavparse
deinterlace
jack
audiotestsrc
encoding
audioconvert
goom
theora
smpte
1394
videocrop
ogg
autodetect
flac
ximagesink
spectrum
icydemux
debug
flv
soup
adder
rtpmanager
effectv
interleave
shapewipe
apetag
audiomixer
videomixer
imagefreeze
typefindfunctions
videoconvert
vorbis
isomp4
mpg123
rawparse
staticelements
End Available Plugins
List Plugins in AudioVisual
spacescope Stereo visualizer
spectrascope Frequency spectrum scope
synaescope Synaescope
wavescope Waveform oscilloscope
END
All Available visualisations
goom GOOM: what a GOOM!
goom2k1 GOOM: what a GOOM! 2k1 edition
libvisual_oinksie libvisual oinksie plugin plugin v.0.1
libvisual_lv_scope libvisual libvisual scope plugin v.0.1
libvisual_lv_analyzer libvisual libvisual analyzer plugin v.1.0
libvisual_jakdaw libvisual Jakdaw plugin plugin v.0.0.1
libvisual_infinite libvisual infinite plugin plugin v.0.1
libvisual_corona libvisual libvisual corona plugin plugin v.0.1
libvisual_bumpscope libvisual Bumpscope plugin plugin v.0.0.1
libvisual_jess libvisual jess plugin plugin v.0.1
monoscope Monoscope
spacescope Stereo visualizer
spectrascope Frequency spectrum scope
synaescope Synaescope
wavescope Waveform oscilloscope
END
All Available Audio filters
equalizer-10bands 10 Band Equalizer
equalizer-3bands 3 Band Equalizer
equalizer-nbands N Band Equalizer
rgvolume ReplayGain volume
rglimiter ReplayGain limiter
stereo Stereo effect
audioecho Audio echo
audiofirfilter Audio FIR filter
audiowsincband Band pass & band reject filter
audiowsinclimit Low pass & high pass filter
audioiirfilter Audio IIR filter
audiochebband Band pass & band reject filter
audiocheblimit Low pass & high pass filter
audiodynamic Dynamic range controller
audioamplify Audio amplifier
audiokaraoke AudioKaraoke
audioinvert Audio inversion
audiopanorama Stereo positioning
volume Volume
audiorate Audio rate adjuster
removesilence RemoveSilence
speed Speed
pitch Pitch controller
festival Festival Text-to-Speech synthesizer
spanplc SpanDSP PLC
freeverb Reverberation/room effect
bs2b Crossfeed effect
ladspa-decay-1886-so-decay Exponential signal decay
ladspa-comb-1887-so-comb-n Comb delay line, noninterpolating
ladspa-comb-1887-so-comb-l Comb delay line, linear interpolation
ladspa-comb-1887-so-comb-c Comb delay line, cubic spline interpolation
ladspa-karaoke-1409-so-karaoke Karaoke
ladspa-triple-para-1204-so-triplepara Triple band parametric with shelves
ladspa-sifter-1210-so-sifter Signal sifter
ladspa-valve-rect-1405-so-valverect Valve rectifier
ladspa-matrix-ms-st-1421-so-matrixmsst Matrix: MS to Stereo
ladspa-gverb-1216-so-gverb GVerb
ladspa-sc4m-1916-so-sc4m SC4 mono
ladspa-tap-reflector-so-tap-reflector TAP Reflector
ladspa-transient-1206-so-transient Transient mangler
ladspa-matrix-st-ms-1420-so-matrixstms Matrix: Stereo to MS
ladspa-gsm-1215-so-gsm GSM simulator
ladspa-delayorama-1402-so-delayorama Delayorama
ladspa-satan-maximiser-1408-so-satanmaximiser Barry's Satan Maximiser
ladspa-mbeq-1197-so-mbeq Multiband EQ
ladspa-bode-shifter-1431-so-bodeshifter Bode frequency shifter
ladspa-tap-pinknoise-so-tap-pinknoise TAP Pink/Fractal Noise
ladspa-phasers-1217-so-lfophaser LFO Phaser
ladspa-phasers-1217-so-fourbyfourpole 4 x 4 pole allpass
ladspa-phasers-1217-so-autophaser Auto phaser
ladspa-comb-1190-so-comb Comb Filter
ladspa-pitch-scale-1194-so-pitchscalehq Higher Quality Pitch Scaler
ladspa-decimator-1202-so-decimator Decimator
ladspa-tap-chorusflanger-so-tap-chorusflanger TAP Chorus/Flanger
ladspa-tape-delay-1211-so-tapedelay Tape Delay Simulation
ladspa-notch-iir-1894-so-notch-iir Mag's Notch Filter
ladspa-tap-deesser-so-tap-deesser TAP DeEsser
ladspa-amp-so-amp-mono Mono Amplifier
ladspa-amp-so-amp-stereo Stereo Amplifier
ladspa-gong-beater-1439-so-gongbeater Gong beater
ladspa-diode-1185-so-diode Diode Processor
ladspa-amp-1181-so-amp Simple amplifier
ladspa-shaper-1187-so-shaper Wave shaper
ladspa-foverdrive-1196-so-foverdrive Fast overdrive
ladspa-ls-filter-1908-so-lsfilter LS Filter
ladspa-flanger-1191-so-flanger Flanger
ladspa-chebstortion-1430-so-chebstortion Chebyshev distortion
ladspa-inv-1429-so-inv Inverter
ladspa-split-1406-so-split Mono to Stereo splitter
ladspa-gate-1410-so-gate Gate
ladspa-tap-dynamics-st-so-tap-dynamics-st TAP Dynamics (St)
ladspa-sc2-1426-so-sc2 SC2
ladspa-pitch-scale-1193-so-pitchscale Pitch Scaler
ladspa-tap-sigmoid-so-tap-sigmoid TAP Sigmoid Booster
ladspa-tap-tremolo-so-tap-tremolo TAP Tremolo
ladspa-ringmod-1188-so-ringmod-2i1o Ringmod with two inputs
ladspa-ringmod-1188-so-ringmod-1i1o1l Ringmod with LFO
ladspa-harmonic-gen-1220-so-harmonicgen Harmonic generator
ladspa-dj-eq-1901-so-dj-eq-mono DJ EQ (mono)
ladspa-dj-eq-1901-so-dj-eq DJ EQ
ladspa-cmt-so-bf2cube Ambisonic Decoder (B-Format to Cube)
ladspa-cmt-so-bf2quad Ambisonic Decoder (B-Format to Quad)
ladspa-cmt-so-bf2stereo Ambisonic Decoder (B-Format to Stereo)
ladspa-cmt-so-fmh2oct Ambisonic Decoder (FMH-Format to Octagon)
ladspa-cmt-so-encode-bformat Ambisonic Encoder (B-Format)
ladspa-cmt-so-encode-fmh Ambisonic Encoder (FMH-Format)
ladspa-cmt-so-bf-rotate-z Ambisonic Rotation (B-Format, Horizontal)
ladspa-cmt-so-fmh-rotate-z Ambisonic Rotation (FMH-Format, Horizontal)
ladspa-cmt-so-amp-mono Amplifier (Mono)
ladspa-cmt-so-amp-stereo Amplifier (Stereo)
ladspa-cmt-so-am Amplitude Modulator
ladspa-cmt-so-canyon-delay Canyon Delay
ladspa-cmt-so-disintegrator Disintegrator
ladspa-cmt-so-sledgehammer Dynamic Sledgehammer
ladspa-cmt-so-delay-0-01s Echo Delay Line (Maximum Delay 0.01s)
ladspa-cmt-so-delay-0-1s Echo Delay Line (Maximum Delay 0.1s)
ladspa-cmt-so-delay-1s Echo Delay Line (Maximum Delay 1s)
ladspa-cmt-so-delay-5s Echo Delay Line (Maximum Delay 5s)
ladspa-cmt-so-delay-60s Echo Delay Line (Maximum Delay 60s)
ladspa-cmt-so-fmh2bf FMH-Format to B-Format (Discards RSTUV Channels)
ladspa-cmt-so-fbdelay-0-01s Feedback Delay Line (Maximum Delay 0.01s)
ladspa-cmt-so-fbdelay-0-1s Feedback Delay Line (Maximum Delay 0.1s)
ladspa-cmt-so-fbdelay-1s Feedback Delay Line (Maximum Delay 1s)
ladspa-cmt-so-fbdelay-5s Feedback Delay Line (Maximum Delay 5s)
ladspa-cmt-so-fbdelay-60s Feedback Delay Line (Maximum Delay 60s)
ladspa-cmt-so-freeverb3 Freeverb (Version 3)
ladspa-cmt-so-grain-scatter Granular Scatter Processor
ladspa-cmt-so-hard-gate Hard Gate
ladspa-cmt-so-hpf High Pass Filter (One Pole)
ladspa-cmt-so-identity-audio Identity (Audio)
ladspa-cmt-so-lofi Lo Fi
ladspa-cmt-so-lpf Low Pass Filter (One Pole)
ladspa-cmt-so-mixer Mixer (Stereo to Mono)
ladspa-cmt-so-compress-peak Simple Compressor (Peak Envelope Tracking)
ladspa-cmt-so-compress-rms Simple Compressor (RMS Envelope Tracking)
ladspa-cmt-so-expand-peak Simple Expander (Peak Envelope Tracking)
ladspa-cmt-so-expand-rms Simple Expander (RMS Envelope Tracking)
ladspa-cmt-so-limit-peak Simple Limiter (Peak Envelope Tracking)
ladspa-cmt-so-limit-rms Simple Limiter (RMS Envelope Tracking)
ladspa-cmt-so-sine-faaa Sine Oscillator (Freq:audio, Amp:audio)
ladspa-cmt-so-sine-faac Sine Oscillator (Freq:audio, Amp:control)
ladspa-cmt-so-sine-fcaa Sine Oscillator (Freq:control, Amp:audio)
ladspa-cmt-so-vcf303 VCF 303
ladspa-cmt-so-wshape-sine Wave Shaper (Sine-Based)
ladspa-tap-pitch-so-tap-pitch TAP Pitch Shifter
ladspa-step-muxer-1212-so-stepmuxer Step Demuxer
ladspa-tap-vibrato-so-tap-vibrato TAP Vibrato
ladspa-surround-encoder-1401-so-surroundencoder Surround matrix encoder
ladspa-se4-1883-so-se4 SE4
ladspa-lowpass-iir-1891-so-lowpass-iir Glame Lowpass Filter
ladspa-am-pitchshift-1433-so-ampitchshift AM pitchshifter
ladspa-bandpass-a-iir-1893-so-bandpass-a-iir Glame Bandpass Analog Filter
ladspa-alias-1407-so-alias Aliasing
ladspa-vocoder-1337-so-vocoder Vocoder
ladspa-delay-so-delay-5s Simple Delay Line
ladspa-tap-dynamics-m-so-tap-dynamics-m TAP Dynamics (M)
ladspa-tap-autopan-so-tap-autopan TAP AutoPanner
ladspa-allpass-1895-so-allpass-n Allpass delay line, noninterpolating
ladspa-allpass-1895-so-allpass-l Allpass delay line, linear interpolation
ladspa-allpass-1895-so-allpass-c Allpass delay line, cubic spline interpolation
ladspa-wave-terrain-1412-so-waveterrain Wave Terrain Oscillator
ladspa-filter-so-lpf Simple Low Pass Filter
ladspa-filter-so-hpf Simple High Pass Filter
ladspa-tap-eq-so-tap-equalizer TAP Equalizer
ladspa-crossover-dist-1404-so-crossoverdist Crossover distortion
ladspa-giant-flange-1437-so-giantflange Giant flange
ladspa-lcr-delay-1436-so-lcrdelay L/C/R Delay
ladspa-butterworth-1902-so-bwxover-iir Glame Butterworth X-over Filter
ladspa-butterworth-1902-so-buttlow-iir GLAME Butterworth Lowpass
ladspa-butterworth-1902-so-butthigh-iir GLAME Butterworth Highpass
ladspa-comb-splitter-1411-so-combsplitter Comb Splitter
ladspa-rate-shifter-1417-so-rateshifter Rate shifter
ladspa-highpass-iir-1890-so-highpass-iir Glame Highpass Filter
ladspa-dc-remove-1207-so-dcremove DC Offset Remover
ladspa-fast-lookahead-limiter-1913-so-fastlookaheadlimiter Fast Lookahead limiter
ladspa-retro-flange-1208-so-retroflange Retro Flanger
ladspa-dj-flanger-1438-so-djflanger DJ flanger
ladspa-tap-limiter-so-tap-limiter TAP Scaling Limiter
ladspa-latency-1914-so-artificiallatency Artificial latency
ladspa-tap-doubler-so-tap-doubler TAP Fractal Doubler
ladspa-bs2b-so-bs2b Bauer stereophonic-to-binaural 0.9.1 (3.1.0)
ladspa-tap-tubewarmth-so-tap-tubewarmth TAP TubeWarmth
ladspa-freq-tracker-1418-so-freqtracker Frequency tracker
ladspa-valve-1209-so-valve Valve saturation
ladspa-single-para-1203-so-singlepara Single band parametric
ladspa-bandpass-iir-1892-so-bandpass-iir Glame Bandpass Filter
ladspa-pointer-cast-1910-so-pointercastdistortion Pointer cast distortion
ladspa-bode-shifter-cv-1432-so-bodeshiftercv Bode frequency shifter (CV)
ladspa-hilbert-1440-so-hilbert Hilbert transformer
ladspa-zm1-1428-so-zm1 z-1
ladspa-svf-1214-so-svf State Variable Filter
ladspa-revdelay-1605-so-revdelay Reverse Delay (5s max)
ladspa-tap-reverb-so-tap-reverb TAP Reverberator
ladspa-smooth-decimate-1414-so-smoothdecimate Smooth Decimator
ladspa-foldover-1213-so-foldover Foldover distortion
ladspa-imp-1199-so-imp Impulse convolver
ladspa-tap-rotspeak-so-tap-rotspeak TAP Rotary Speaker
ladspa-hermes-filter-1200-so-hermesfilter Hermes Filter
ladspa-fad-delay-1192-so-faddelay Fractionally Addressed Delay Line
ladspa-declip-1195-so-declip Declipper
ladspa-tap-eqbw-so-tap-equalizer-bw TAP Equalizer/BW
ladspa-hard-limiter-1413-so-hardlimiter Hard Limiter
ladspa-vynil-1905-so-vynil VyNil (Vinyl Effect)
ladspa-vlevel-ladspa-so-vlevel-mono VLevel (Mono)
ladspa-vlevel-ladspa-so-vlevel-stereo VLevel (Stereo)
ladspa-xfade-1915-so-xfade Crossfade
ladspa-xfade-1915-so-xfade4 Crossfade (4 outs)
ladspa-multivoice-chorus-1201-so-multivoicechorus Multivoice Chorus
ladspa-sine-so-sine-faaa Sine Oscillator (Freq:audio, Amp:audio)
ladspa-sine-so-sine-faac Sine Oscillator (Freq:audio, Amp:control)
ladspa-sine-so-sine-fcaa Sine Oscillator (Freq:control, Amp:audio)
ladspa-tap-echo-so-tap-stereo-echo TAP Stereo Echo
ladspa-sc1-1425-so-sc1 SC1
ladspa-dyson-compress-1403-so-dysoncompress Dyson compressor
ladspa-mod-delay-1419-so-moddelay Modulatable delay
ladspa-matrix-spatialiser-1422-so-matrixspatialiser Matrix Spatialiser
ladspa-sc4-1882-so-sc4 SC4
ladspa-fm-osc-1415-so-fmosc FM Oscillator
ladspa-sc3-1427-so-sc3 SC3
ladspa-plate-1423-so-plate Plate reverb
ladspa-divider-1186-so-divider Audio Divider (Suboctave Generator)
ladspa-const-1909-so-const Constant Signal Generator
ladspa-sinus-wavewrapper-1198-so-sinuswavewrapper Sinus wavewrapper
ladspa-gong-1424-so-gong Gong model
ladspa-delay-1898-so-delay-n Simple delay line, noninterpolating
ladspa-delay-1898-so-delay-l Simple delay line, linear interpolation
ladspa-delay-1898-so-delay-c Simple delay line, cubic spline interpolation
END
Rolf of Saxony
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