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jack2/linux/avbmcl
Christoph Kuhr 0e87cec9d7 AVB mediaclock listener backend. 4 years ago
..
JackAVBDriver.cpp AVB mediaclock listener backend. 4 years ago
JackAVBDriver.h AVB mediaclock listener backend. 4 years ago
README.md AVB mediaclock listener backend. 4 years ago
avb.c AVB mediaclock listener backend. 4 years ago
avb.h AVB mediaclock listener backend. 4 years ago
avb_definitions.h AVB mediaclock listener backend. 4 years ago
avb_sockets.c AVB mediaclock listener backend. 4 years ago
avb_sockets.h AVB mediaclock listener backend. 4 years ago
media_clock_listener.c AVB mediaclock listener backend. 4 years ago
media_clock_listener.h AVB mediaclock listener backend. 4 years ago
mrp_client_control_socket.c AVB mediaclock listener backend. 4 years ago
mrp_client_control_socket.h AVB mediaclock listener backend. 4 years ago
mrp_client_interface.c AVB mediaclock listener backend. 4 years ago
mrp_client_interface.h AVB mediaclock listener backend. 4 years ago
mrp_client_send_msg.c AVB mediaclock listener backend. 4 years ago
mrp_client_send_msg.h AVB mediaclock listener backend. 4 years ago

README.md

Experimental Audio Video Bridging Media Clock Listener JACK Backend

For a detailed description refer to http://lac.linuxaudio.org/2019/doc/kuhr.pdf

Requirements:

  • Intel i210 Ethernet Adapter
  • Running OpenAvnu installation (igb_avb kernel module, libigb, gPTP daemon, MAAP daemon, MRP daemon, Shaper daemon)
  • AVB Media Clock Talker on the AVB network segment must be active and accept any connection (only SRP, no AVDECC ACMP)
  • linux/if_packet.h

Linux build steps:

Init submodule linux/avbmcl/OpenAvnu

cd linux/avbmcl git submodule update --init cd ../../

Build JACK:

./waf configure ./waf build sudo ./waf install

Example parameters:

Choose AVB backend:

-d avbmcl

Choose ethernet device name:

--eth-dev enp5s0

Stream ID of the media clock stream:

--stream-id 00:22:97:00:41:2c:00:00

Destination MAC address of the media clock talker

--dst-mac 91:e0:f0:11:11:11

Use JACK periods with accumulated reception intervals (1)

or with constant 125000ns (0):

-a 1

JACK periods (32, 64 and 128 have been tested):

-p

JACK sample rate (only 48k has been tested):

-r

Example call:

jackd -R -P8 -davbmcl --eth-dev enp5s0 --stream-id 00:22:97:00:41:2c:00:00 --dst-mac 91:e0:f0:11:11:11 -a 1 -r 48000 -p 64