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 connect property is set to auto, this element will try to connect each input port to a random physical jack output pin.
When the 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 ]
Properties
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)
low-latency
“low-latency” gboolean
Optimize all settings for lowest latency. When enabled, buffer-time and latency-time will be ignored.
Flags : Read / Write
Default value : false
Since : 1.20
port-names
“port-names” gchararray
Comma-separated list of port name including "client_name:" prefix
Flags : Read / Write
Default value : NULL
Since : 1.20
port-pattern
“port-pattern” gchararray
autoconnect to ports matching pattern, when NULL connect to physical ports
Flags : Read / Write
Default value : NULL
Since : 1.6
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
explicit (3) – Connect ports to explicitly requested physical ports
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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