gstreamer

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History

Thomas Vander Stichele 78422efb90 build demo app Original commit message from CVS: build demo app		2003-09-21 13:24:13 +00:00
..
demo.c	build demo app	2003-09-21 13:24:13 +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	fix caps	2003-09-21 13:08:29 +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	build demo app	2003-09-21 13:24:13 +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

README

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)