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authorDavid Robillard <d@drobilla.net>2014-08-06 01:26:06 +0000
committerDavid Robillard <d@drobilla.net>2014-08-06 01:26:06 +0000
commit74d7751c37d2c991d244c1c23e1a4cd24451ac41 (patch)
treeaf301c27cbf585ae71f95e9e14e2380f062e6739 /plugins/eg05-scope.lv2/README.txt
parentf181b31c11d6a9317695c68c6cce30319e7e2faa (diff)
downloadlv2-74d7751c37d2c991d244c1c23e1a4cd24451ac41.tar.xz
Order book chapters in build script rather than by bundle name.
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-== Simple Oscilloscope ==
-
-This plugin displays the waveform of an incoming audio signal using a simple
-GTK+Cairo GUI.
-
-This plugin illustrates:
-
-- UI <==> Plugin communication via http://lv2plug.in/ns/ext/atom/[LV2 Atom] events
-- Atom vector usage and resize-port extension
-- Save/Restore UI state by communicating state to backend
-- Saving simple key/value state via the http://lv2plug.in/ns/ext/state/[LV2 State] extension
-- Cairo drawing and partial exposure
-
-This plugin intends to outline the basics for building visualization plugins
-that rely on atom communication. The UI looks like an oscilloscope, but is not
-a real oscilloscope implementation:
-
-- There is no display synchronisation, results will depend on LV2 host.
-- It displays raw audio samples, which a proper scope must not do.
-- The display itself just connects min/max line segments.
-- No triggering or synchronization.
-- No labels, no scale, no calibration, no markers, no numeric readout, etc.
-
-Addressing these issues is beyond the scope of this example.
-
-Please see http://lac.linuxaudio.org/2013/papers/36.pdf for scope design,
-https://wiki.xiph.org/Videos/Digital_Show_and_Tell for background information,
-and http://lists.lv2plug.in/pipermail/devel-lv2plug.in/2013-November/000545.html
-for general LV2 related conceptual criticism regarding real-time visualizations.
-
-A proper oscilloscope based on this example can be found at
-https://github.com/x42/sisco.lv2