monoscope: GStreamer Good Plugins 1.0 Plugins Reference Manual

## monoscope monoscope |

## Types and Values

struct | GstMonoscope

## 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