dtmfdetect

dtmfdetect — Detects DTMF tones

Types and Values

struct GstDtmfDetect

Object Hierarchy

    GObject
    ╰── GInitiallyUnowned
        ╰── GstObject
            ╰── GstElement
                ╰── GstBaseTransform
                    ╰── GstDtmfDetect

Description

This element will detect DTMF tones and emit messages.

The message is called "dtmf-event" and has the following fields:

  • gint type (0-1): The application uses this field to specify which of the two methods specified in RFC 2833 to use. The value should be 0 for tones and 1 for named events. Tones are specified by their frequencies and events are specfied by their number. This element can only take events as input. Do not confuse with "method" which specified the output.

  • gint number (0-16): The event number.

  • gint method (2): This field will always been 2 (ie sound) from this element.

Synopsis

Element Information

plugin

spandsp

author

Olivier Crete <olivier.crete@collabora.com>

class

Filter/Analyzer/Audio

Element Pads

name

sink

direction

sink

presence

always

details

audio/x-raw, format=(string)S16LE, rate=(int)8000, channels=(int)1

name

src

direction

source

presence

always

details

audio/x-raw, format=(string)S16LE, rate=(int)8000, channels=(int)1

Functions

Types and Values

struct GstDtmfDetect

struct GstDtmfDetect;