2016-11-10 12:02:55 +00:00
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# Dependencies
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2017-06-02 22:34:40 +00:00
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## Why are there so many dependencies?
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2016-11-10 12:02:55 +00:00
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Making a full-featured media framework is a huge undertaking in
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itself. By using the work done by others, we both reduce the amount of
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redundant work being done and leave ourselves free to work on the
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architecture itself instead of working on the low-level stuff. We would
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be stupid not to reuse the code others have written.
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However, do realize that in no way you are forced to have all
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dependencies installed. None of the core developers has all of them
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2017-05-29 05:22:09 +00:00
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installed. GStreamer has only a few mandatory dependencies : GLib 2.0,
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2016-11-10 12:02:55 +00:00
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liborc, and very common stuff like glibc, a C compiler, and so on. All
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2017-05-29 05:22:09 +00:00
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other dependencies are optional.
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2016-11-10 12:02:55 +00:00
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2017-05-29 05:22:09 +00:00
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In closing, let's rephrase the question to “Why are you giving me so
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2017-06-02 22:34:40 +00:00
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many choices and such a rich environment?”
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2016-11-10 12:02:55 +00:00
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2017-05-29 05:22:09 +00:00
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## Is GStreamer X11 independent? Can it be used headless?
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2016-11-10 12:02:55 +00:00
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2016-11-12 20:46:29 +00:00
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Yes, we have no hard dependency on X11 or any other windowing system in
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any of our modules. There are many GStreamer applications that run fine
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without any need for display servers or windowing systems,
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2016-11-10 12:02:55 +00:00
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for example streaming servers, transcoding applications, or audio
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applications that don't output any video. Other applications output
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video to a framebuffer, custom-made hardware sinks, or via wayland.
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2017-05-29 05:22:09 +00:00
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## What is GStreamer's position on efforts such as LADSPA or LV2?
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2016-11-10 12:02:55 +00:00
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2016-11-12 20:46:29 +00:00
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GStreamer actively supports such efforts, and in the case of [LADSPA][ladspa]
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or [LV2][lv2] we already have wrapper plugins. These wrapper plug-ins detect
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2017-05-29 05:22:09 +00:00
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the LADSPA/LV2 plugins present on your system at run-time and make them
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2016-11-12 20:46:29 +00:00
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available as GStreamer elements.
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[ladspa]: https://en.wikipedia.org/wiki/LADSPA
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[lv2]: http://lv2plug.in/
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2016-11-10 12:02:55 +00:00
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2017-06-02 22:34:40 +00:00
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## Does GStreamer support MIDI?
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2016-11-10 12:02:55 +00:00
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2016-11-12 20:46:29 +00:00
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There is some rudimentary MIDI support in GStreamer, but it's not complete yet.
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The GStreamer architecture should be able to support the needs of MIDI
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applications very well, a full implementation is still missing, however.
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If you are a developer interested in adding MIDI support to GStreamer please
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get in touch, we would definitely be interested in that.
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As for what exists today: the [`alsamidisrc`][alsamidisrc] element can be used
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to fetch ALSA MIDI sequencer events and makes them available to elements that
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understand the `audio/x-midi-events` format.
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MIDI playback is provided by plugins such as `midiparse`, `fluiddec`,
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`wildmidi` and `timidity`.
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2016-11-10 12:02:55 +00:00
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2016-11-12 20:46:29 +00:00
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[alsamidisrc]: https://gstreamer.freedesktop.org/data/doc/gstreamer/head/gst-plugins-base-plugins/html/gst-plugins-base-plugins-alsamidisrc.html
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2016-11-10 12:02:55 +00:00
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2017-06-02 22:34:40 +00:00
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## Does GStreamer depend on GNOME or GTK+?
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2016-11-10 12:02:55 +00:00
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2017-07-21 21:03:05 +00:00
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No, it's just that many GStreamer applications, including some of our sample
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ones, happen to be GNOME or GTK+ applications, but there are just as many
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using the Qt toolkit or written for Mac OS/X, Windows, Android or iOS.
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We aim to provide an API that is toolkit-agnostic, so that GStreamer can be used
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from any toolkit, desktop environment or operating system.
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