diff options
| author | Andy Wingo <wingo@pobox.com> | 2005-07-04 14:02:46 +0000 |
|---|---|---|
| committer | Andy Wingo <wingo@pobox.com> | 2005-07-04 14:02:46 +0000 |
| commit | 2d199737c163bb70adbd6da5a8abeea1ba90aaf9 (patch) | |
| tree | 90c608eaf2d956b0d27be9a3e159cfb1312ecfa3 /examples/level/README | |
| parent | fcfad33d4a80287684ae7d5809b743d38e5d4fe6 (diff) | |
| download | gst-plugins-bad-2d199737c163bb70adbd6da5a8abeea1ba90aaf9.tar.gz gst-plugins-bad-2d199737c163bb70adbd6da5a8abeea1ba90aaf9.tar.bz2 gst-plugins-bad-2d199737c163bb70adbd6da5a8abeea1ba90aaf9.zip | |
examples/level/: Examples moved out of the source dir. Not updated tho.
Original commit message from CVS:
2005-07-04 Andy Wingo <wingo@pobox.com>
* examples/level/:
* examples/level/Makefile.am:
* examples/level/README:
* examples/level/demo.c:
* examples/level/plot.c: Examples moved out of the source dir. Not
updated tho.
* configure.ac: Add level to the build.
* gst/level/Makefile.am:
* gst/level/gstlevel.h:
* gst/level/gstlevel.c: Cleaned up, ported to 0.9.
Diffstat (limited to 'examples/level/README')
| -rw-r--r-- | examples/level/README | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/examples/level/README b/examples/level/README new file mode 100644 index 00000000..0ae84188 --- /dev/null +++ b/examples/level/README @@ -0,0 +1,39 @@ +level plugin by thomas <thomas@apestaart.org> + +this plugin signals: + - running time since last EOS/start + - 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) + +There are two demo apps, apps and plot. apps will create some GTK sliders +to display the volume. plot will output data readable by gnuplot. + +Here is a sample plot script to plot output of the plot command that was +stored to plot.dat + +set xlabel "Seconds" +set ylabel "dB" +set yrange [-60:0] +plot 'plot.dat' using 1:2 title 'L RMS' with lines, \ + 'plot.dat' using 1:3 title 'L peak' with lines, \ + 'plot.dat' using 1:4 title 'L decay' with lines + +plot 'plot.dat' using 1:5 title 'R RMS' with lines, \ + 'plot.dat' using 1:6 title 'R peak' with lines, \ + 'plot.dat' using 1:7 title 'R decay' with lines + + |