rtpdtmfdepay

This element takes RTP DTMF packets and produces sound. It also emits a message on the GstBus.

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

  • type (G_TYPE_INT, 0-1): 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 specified by their number. This element currently only recognizes events. Do not confuse with "method" which specified the output.

  • number (G_TYPE_INT, 0-16): The event number.

  • volume (G_TYPE_INT, 0-36): This field describes the power level of the tone, expressed in dBm0 after dropping the sign. Power levels range from 0 to -63 dBm0. The range of valid DTMF is from 0 to -36 dBm0.

  • method (G_TYPE_INT, 1): This field will always been 1 (ie RTP event) from this element.

Hierarchy

GObject
    ╰──GInitiallyUnowned
        ╰──GstObject
            ╰──GstElement
                ╰──GstRTPBaseDepayload
                    ╰──rtpdtmfdepay

Factory details

Authors: – Youness Alaoui

Classification:Codec/Depayloader/Network

Rank – marginal

Plugin – dtmf

Package – GStreamer Good Plug-ins

Pad Templates

sink

application/x-rtp:
          media: audio
        payload: [ 96, 127 ]
     clock-rate: [ 0, 2147483647 ]
  encoding-name: TELEPHONE-EVENT

Presencealways

Directionsink

Object typeGstPad


src

audio/x-raw:
         format: S16LE
           rate: [ 1, 2147483647 ]
       channels: 1

Presencealways

Directionsrc

Object typeGstPad


Properties

max-duration

“max-duration” guint

The maxumimum duration (ms) of the outgoing soundpacket. (0 = no limit)

Flags : Read / Write

Default value : 0


unit-time

“unit-time” guint

The smallest unit (ms) the duration must be a multiple of (0 disables it)

Flags : Read / Write

Default value : 0


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