gstreamer/gst/level
Thomas Vander Stichele 1bb14f4e48 reworked level plugin. It now does RMS, peak, and decay peak signaling per interleaved channel.
Original commit message from CVS:
reworked level plugin.  It now does RMS, peak, and decay peak signaling
per interleaved channel.
2003-09-21 12:21:49 +00:00
..
filter.func reworked level plugin. It now does RMS, peak, and decay peak signaling per interleaved channel. 2003-09-21 12:21:49 +00:00
gstlevel-marshal.list reworked level plugin. It now does RMS, peak, and decay peak signaling per interleaved channel. 2003-09-21 12:21:49 +00:00
gstlevel.c reworked level plugin. It now does RMS, peak, and decay peak signaling per interleaved channel. 2003-09-21 12:21:49 +00:00
gstlevel.h reworked level plugin. It now does RMS, peak, and decay peak signaling per interleaved channel. 2003-09-21 12:21:49 +00:00
Makefile.am reworked level plugin. It now does RMS, peak, and decay peak signaling per interleaved channel. 2003-09-21 12:21:49 +00:00
README reworked level plugin. It now does RMS, peak, and decay peak signaling per interleaved channel. 2003-09-21 12:21:49 +00:00

level plugin by thomas <thomas@apestaart.org>

this plugin signals:
  - channel
  - RMS level
  - peak level
  - decaying peak level
over the given interval.

This is useful for a VU meter display and for plotting out the signal graph.
The VU meter can either display RMS, or display immediate peak level and
have the falloff decaying peak level displayed as a line.

The interval for signal emission, ttl of decay peak, and falloff of decay peak
can all be set.

The element only takes unsigned data in; it could be extended to signed as
well, if separate fast chain functions are made that displaces the incoming
data to its midpoint (ie, 0,65535 should be mapped to -32768, 32767)