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Monoscope is an audio visualisation element. It creates a coloured curve of the audio signal like on an oscilloscope.
1 |
gst-launch-1.0 -v audiotestsrc ! audioconvert ! monoscope ! videoconvert ! ximagesink |
plugin |
monoscope |
author |
Richard Boulton <richard@tartarus.org> |
class |
Visualization |
name |
sink |
direction |
sink |
presence |
always |
details |
audio/x-raw, format=(string)S16LE, rate=(int)[ 8000, 96000 ], channels=(int)1, layout=(string)interleaved |
name |
src |
direction |
source |
presence |
always |
details |
video/x-raw, format=(string)BGRx, width=(int)256, height=(int)128, framerate=(fraction)[ 0/1, 2147483647/1 ] |
struct GstMonoscope {
GstElement element;
/* pads */
GstPad *sinkpad;
GstPad *srcpad;
GstAdapter *adapter;
guint64 next_ts; /* expected timestamp of the next frame */
guint64 frame_duration; /* video frame duration */
gint rate; /* sample rate */
guint bps; /* bytes per sample */
guint spf; /* samples per video frame */
GstBufferPool *pool;
GstSegment segment;
/* QoS stuff *//* with LOCK */
gdouble proportion;
GstClockTime earliest_time;
/* video state */
gint fps_num;
gint fps_denom;
gint width;
gint height;
guint outsize;
/* visualisation state */
struct monoscope_state *visstate;
};