sirenenc

This encodes audio buffers into the Siren 16 codec (a 16khz extension of G.722.1) that is meant to be compatible with the Microsoft Windows Live Messenger(tm) implementation.

Ref: http://www.polycom.com/company/about_us/technology/siren_g7221/index.html

Hierarchy

GObject
    ╰──GInitiallyUnowned
        ╰──GstObject
            ╰──GstElement
                ╰──GstAudioEncoder
                    ╰──sirenenc

Factory details

Authors: – Youness Alaoui

Classification:Codec/Encoder/Audio

Rank – marginal

Plugin – gstsiren

Package – GStreamer Bad Plug-ins

Pad Templates

sink

audio/x-raw:
         format: S16LE
           rate: 16000
       channels: 1

Presencealways

Directionsink

Object typeGstPad


src

audio/x-siren:
     dct-length: 320

Presencealways

Directionsrc

Object typeGstPad


Properties

hard-resync

“hard-resync” gboolean

Perform clipping and sample flushing upon discontinuity

Flags : Read / Write

Default value : false


mark-granule

“mark-granule” gboolean

Apply granule semantics to buffer metadata (implies perfect-timestamp)

Flags : Read

Default value : false


perfect-timestamp

“perfect-timestamp” gboolean

Favour perfect timestamps over tracking upstream timestamps

Flags : Read / Write

Default value : false


tolerance

“tolerance” gint64

Consider discontinuity if timestamp jitter/imperfection exceeds tolerance (ns)

Flags : Read / Write

Default value : 40000000


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