[Bug 651536] baseclass for scopes (visualizers)

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=651536
  GStreamer | gst-plugins-bad | git

--- Comment #4 from Stefan Kost (gstreamer, gtkdoc dev) <ensonic at sonicpulse.de> 2011-05-31 11:02:05 UTC ---
Created an attachment (id=188920)
 View: https://bugzilla.gnome.org/attachment.cgi?id=188920
 Review: https://bugzilla.gnome.org/review?bug=651536&attachment=188920

basescope: allow subclasses telling how many sample they need per frame

This allows e.g. FFT based elements to require enough data. If they need more
data than what we get, we flush less from the adapter.

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