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gstreamer/gst/cutter
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Stefan Kost 1def669c0e Fix more gobject macros: obj<->klass, GstXXX<->GstXXXClass 
Original commit message from CVS:
* ext/aalib/gstaasink.h:
* ext/annodex/gstcmmldec.h:
* ext/cairo/gsttimeoverlay.h:
* ext/dv/gstdvdec.h:
* ext/dv/gstdvdemux.h:
* ext/esd/esdmon.h:
* ext/esd/esdsink.h:
* ext/flac/gstflacenc.h:
* ext/gconf/gstgconfaudiosink.h:
* ext/gconf/gstgconfaudiosrc.h:
* ext/gconf/gstgconfvideosink.h:
* ext/gconf/gstgconfvideosrc.h:
* ext/gdk_pixbuf/gstgdkanimation.h:
* ext/gdk_pixbuf/pixbufscale.h:
* ext/hal/gsthalaudiosink.h:
* ext/hal/gsthalaudiosrc.h:
* ext/jpeg/gstjpegenc.h:
* ext/jpeg/gstsmokedec.h:
* ext/jpeg/gstsmokeenc.h:
* ext/libcaca/gstcacasink.h:
* ext/libmng/gstmngdec.h:
* ext/libmng/gstmngenc.h:
* ext/libpng/gstpngdec.h:
* ext/libpng/gstpngenc.h:
* ext/raw1394/gstdv1394src.h:
* ext/speex/gstspeexenc.h:
* gst/autodetect/gstautoaudiosink.h:
* gst/autodetect/gstautovideosink.h:
* gst/avi/gstavidemux.h:
* gst/cutter/gstcutter.h:
* gst/debug/efence.h:
* gst/debug/gstnavigationtest.h:
* gst/debug/gstnavseek.h:
* gst/flx/gstflxdec.h:
* gst/goom/gstgoom.h:
* gst/icydemux/gsticydemux.h:
* gst/id3demux/gstid3demux.h:
* gst/law/alaw-decode.h:
* gst/law/alaw-encode.h:
* gst/law/mulaw-decode.h:
* gst/law/mulaw-encode.h:
* gst/matroska/matroska-mux.h:
* gst/median/gstmedian.h:
* gst/oldcore/gstaggregator.h:
* gst/oldcore/gstfdsink.h:
* gst/oldcore/gstmd5sink.h:
* gst/oldcore/gstmultifilesrc.h:
* gst/oldcore/gstpipefilter.h:
* gst/oldcore/gstshaper.h:
* gst/oldcore/gststatistics.h:
* gst/rtp/gstasteriskh263.h:
* gst/rtp/gstrtpL16depay.h:
* gst/rtp/gstrtpL16pay.h:
* gst/rtp/gstrtpamrdepay.h:
* gst/rtp/gstrtpamrpay.h:
* gst/rtp/gstrtpdepay.h:
* gst/rtp/gstrtpgsmdepay.h:
* gst/rtp/gstrtpgsmpay.h:
* gst/rtp/gstrtph263pay.h:
* gst/rtp/gstrtph263pdepay.h:
* gst/rtp/gstrtph263ppay.h:
* gst/rtp/gstrtpmp4gpay.h:
* gst/rtp/gstrtpmp4vdepay.h:
* gst/rtp/gstrtpmp4vpay.h:
* gst/rtp/gstrtpmpadepay.h:
* gst/rtp/gstrtpmpapay.h:
* gst/rtp/gstrtppcmadepay.h:
* gst/rtp/gstrtppcmapay.h:
* gst/rtp/gstrtppcmudepay.h:
* gst/rtp/gstrtppcmupay.h:
* gst/rtp/gstrtpspeexdepay.h:
* gst/rtp/gstrtpspeexpay.h:
* gst/rtsp/gstrtpdec.h:
* gst/rtsp/gstrtspsrc.h:
* gst/smpte/gstsmpte.h:
* gst/udp/gstdynudpsink.h:
* gst/udp/gstmultiudpsink.h:
* gst/udp/gstudpsink.h:
* gst/udp/gstudpsrc.h:
* gst/videofilter/gstvideobalance.h:
* gst/videofilter/gstvideoflip.h:
* sys/oss/gstossdmabuffer.h:
* sys/oss/gstossmixerelement.h:
* sys/oss/gstosssink.h:
* sys/oss/gstosssrc.h:
* sys/osxvideo/osxvideosink.h:
* sys/sunaudio/gstsunaudiomixer.h:
* sys/sunaudio/gstsunaudiosink.h:
* sys/ximage/gstximagesrc.h:
Fix more gobject macros: obj<->klass, GstXXX<->GstXXXClass
2006-06-01 21:07:26 +00:00
..
cutter.vcproj more working plugins 2004-07-27 21:41:30 +00:00
filter.func Initial revision 2001-12-22 23:27:31 +00:00
gstcutter.c Define GstElementDetails as const and also static (when defined as global) 2006-04-25 21:39:46 +00:00
gstcutter.h Fix more gobject macros: obj<->klass, GstXXX<->GstXXXClass 2006-06-01 21:07:26 +00:00
Makefile.am port cutter 2005-11-21 19:50:25 +00:00
README Initial revision 2001-12-22 23:27:31 +00:00

README 

cutter plugin by thomas <thomas@apestaart.org>

SYNOPSIS

This plugin emits signals when RMS level of audio signal crosses a
threshold for a given amount of time.  

As soon as the buffer's RMS is greater than the threshold value, the plugin fires a CUT_START signal.

When the buffer's RMS level drops below the threshold value for a consecutive run length longer than the given runlength, it sends a CUT_STOP signal.

When a pre-recording buffer is used, the plugin will delay throughput of data when it's in "silent" mode for a maximum length equal to the pre-recording buffer length.  As soon as the input level crosses the threshold level, this pre-recorded buffer is flushed to the src pad (so you can actually record the audio just before the threshold crossing) after sending the signal.

ARGUMENTS

GstCutter::threshold
	level (between 0 and 1) of threshold
GstCutter::threshold_dB
	level of threshold in dB (between -inf and 0)
GstCutter::runlength
	minimum length (in seconds) before plugin sends cut_stop signal
GstCutter::prelength
        length of pre-recording buffer
        
SIGNALS

	CUT_START
	gets sent when the level of the signal goes above threshold level
	CUT_STOP
	gets sent when the level of the signal has been below the
	threshold level for a number of consecutive iterations of which
	the cumulative length is more than the runlength

LIMITATIONS

	* RMS value is calculated over the whole data buffer, so
	  the time resolution is limited to the buffer length
	* RMS value is calculated over all of the channels combined