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faq: update dependencies section

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Tim-Philipp Müller 2016-11-12 20:46:29 +00:00
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markdown/frequently-asked-questions/dependencies.md
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@ -17,34 +17,48 @@ of the other dependencies are optional.
So, in closing, let's rephrase the question to “Why are you giving me so So, in closing, let's rephrase the question to “Why are you giving me so
many choices and such a rich environment ?” many choices and such a rich environment ?”
## Is GStreamer X independent ? ## Is GStreamer X11 independent? Can it be used headless?
Yes, we have no hard X dependency in any of our modules. There Yes, we have no hard dependency on X11 or any other windowing system in
are many GStreamer applications that run fine without any need for X, any of our modules. There are many GStreamer applications that run fine
without any need for display servers or windowing systems,
for example streaming servers, transcoding applications, or audio for example streaming servers, transcoding applications, or audio
applications that don't output any video. Other applications output applications that don't output any video. Other applications output
video to a framebuffer, custom-made hardware sinks, or via wayland. video to a framebuffer, custom-made hardware sinks, or via wayland.
## What is GStreamer's position on efforts such as LADSPA ? ## What is GStreamer's position on efforts such as LADSPA or LV2?
GStreamer actively supports such efforts, and in the case of GStreamer actively supports such efforts, and in the case of [LADSPA][ladspa]
[LADSPA](http://www.ladspa.org/), we already have a wrapper plugin. This or [LV2][lv2] we already have wrapper plugins. These wrapper plug-ins detect
wrapper plug-in detects the LADSPA plugins present on your system at run the LADSPA/LV2 plugins present on your system at run time and make them
time. available as GStreamer elements.
[ladspa]: https://en.wikipedia.org/wiki/LADSPA
[lv2]: http://lv2plug.in/
## Does GStreamer support MIDI ? ## Does GStreamer support MIDI ?
Not yet. The GStreamer architecture should be able to support the There is some rudimentary MIDI support in GStreamer, but it's not complete yet.
needs of MIDI applications very well however. If you are a developer
interested in adding MIDI support to GStreamer we are very interested in
getting in touch with you.
MIDI playback is provided by plugins such as wildmidi and timidity. The GStreamer architecture should be able to support the needs of MIDI
applications very well, a full implementation is still missing, however.
If you are a developer interested in adding MIDI support to GStreamer please
get in touch, we would definitely be interested in that.
As for what exists today: the [`alsamidisrc`][alsamidisrc] element can be used
to fetch ALSA MIDI sequencer events and makes them available to elements that
understand the `audio/x-midi-events` format.
MIDI playback is provided by plugins such as `midiparse`, `fluiddec`,
`wildmidi` and `timidity`.
[alsamidisrc]: https://gstreamer.freedesktop.org/data/doc/gstreamer/head/gst-plugins-base-plugins/html/gst-plugins-base-plugins-alsamidisrc.html
## Does GStreamer depend on GNOME or GTK+ ? ## Does GStreamer depend on GNOME or GTK+ ?
No. But many of the applications developed for GStreamer do, No, it's just that many of the applications developed for GStreamer happen to
including some of our sample applications. Other applications use the Qt be GNOME or GTK+ applications, including some of our sample applications. There
toolkit, or are written for Mac OS/X or Windows. We aim to provide API are just as many applications that use the Qt toolkit or that are written for
that is toolkit agnostic and can be used from any toolkit, desktop Mac OS/X, Windows, Android or iOS. We aim to provide an API that is toolkit
environment or operating system. agnostic, so that GStreamer can be used from any toolkit, desktop environment
or operating system.