jackaudiosrc

A Src that inputs data from Jack ports.

It will create N Jack ports named in_<name>_<num> where <name> is the element name and <num> is starting from 1. Each port corresponds to a gstreamer channel.

The samplerate as exposed on the caps is always the same as the samplerate of the jack server.

When the GstJackAudioSrc:connect property is set to auto, this element will try to connect each input port to a random physical jack output pin.

When the GstJackAudioSrc:connect property is set to none, the element will accept any number of output channels and will create (but not connect) an input port for each channel.

The element will generate an error when the Jack server is shut down when it was PAUSED or PLAYING. This element does not support dynamic rate and buffer size changes at runtime.

Example launch line

 gst-launch-1.0 jackaudiosrc connect=0 ! jackaudiosink connect=0

Get audio input into gstreamer from jack.

Hierarchy

GObject
    ╰──GInitiallyUnowned
        ╰──GstObject
            ╰──GstElement
                ╰──GstBaseSrc
                    ╰──GstPushSrc
                        ╰──GstAudioBaseSrc
                            ╰──jackaudiosrc

Factory details

Authors: – Tristan Matthews

Classification:Source/Audio

Rank – primary

Plugin – jack

Package – GStreamer Good Plug-ins

Pad Templates

src

audio/x-raw:
         format: F32LE
         layout: interleaved
           rate: [ 1, 2147483647 ]
       channels: [ 1, 2147483647 ]

Presencealways

Directionsrc

Object typeGstPad


Properties

client

“client” JackClient *

Handle for jack client

Flags : Read / Write


client-name

“client-name” gchararray

The client name to use.

Flags : Read / Write

Default value : NULL


connect

“connect” GstJackConnect *

Specify how the input ports will be connected

Flags : Read / Write

Default value : auto (1)


port-pattern

“port-pattern” gchararray

autoconnect to ports matching pattern, when NULL connect to physical ports

Flags : Read / Write

Default value : NULL


server

“server” gchararray

The Jack server to connect to (NULL = default)

Flags : Read / Write

Default value : NULL


transport

“transport” GstJackTransport *

Jack transport behaviour of the client

Flags : Read / Write

Default value : (none)


Named constants

GstJackConnect

Specify how the output ports will be connected.

Members

none (0) – Don't automatically connect ports to physical ports
auto (1) – Automatically connect ports to physical ports
auto-forced (2) – Automatically connect ports to as many physical ports as possible

GstJackTransport

The jack transport state allow to sync multiple clients. This enum defines a client behaviour regarding to the transport mechanism.

Members

master (0x00000001) – Start and stop transport with state changes
slave (0x00000002) – Follow transport state changes

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