monoscope

monoscope — Displays a highly stabilised waveform of audio input

Types and Values

struct GstMonoscope

Object Hierarchy


Description

Monoscope is an audio visualisation element. It creates a coloured curve of the audio signal like on an oscilloscope.

Example launch line

1
gst-launch-1.0 -v audiotestsrc ! audioconvert ! monoscope ! videoconvert ! ximagesink

Synopsis

Element Information

plugin

monoscope

author

Richard Boulton <richard@tartarus.org>

class

Visualization

Element Pads

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 ]

Functions

Types and Values

struct GstMonoscope

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;
};

See Also

goom