Add ohm, an OpenHome Songcast sender audio backend · b75edeedc3 - shairport-sync

Add ohm, an OpenHome Songcast sender audio backend

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Build and conditionally push docker image / Build and conditionally push docker image (SHAIRPORT_SYNC_BRANCH=. NQPTP_BRANCH=${{ needs.docker-vars.outputs.nqptp_branch }} , ./docker/Dockerfile, main) (push) Failing after 31m49s

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Streams AirPlay audio to OpenHome/Songcast receivers as OHU unicast PCM
(16/24-bit). Sends are paced on the PTP master clock so receivers slave
to the AirPlay group clock through their buffer-fill servo; MediaLatency
carries the phase, matching the wire behaviour of Linn's own sender
(zero flags and timestamps). delay() reports the newest frame's playtime
lead so shairport feeds a receiver latency ahead. Handles Join, Listen,
Leave and Resend with a frame history, and forwards track metadata and
metatext from the metadata hub.

With -r <name>, ohm_upnp controls the receiver over UPnP: discovered by
friendly name via SSDP at time of use, woken, switched to its Songcast
source and pointed at this sender when a session starts; volume follows
the AirPlay slider capped at the device's VolumeLimit; standby follows
some minutes after the session ends.

This commit is contained in:

nils

2026-08-28 23:54:16 +02:00

parent fadd43d06e

commit b75edeedc3

9 changed files with 2284 additions and 2 deletions

									
										metadata/hub.h
									
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				@@ -4,7 +4,7 @@

				#include "rtsp.h"

				#include <pthread.h>

				#define number_of_watchers 2

				#define number_of_watchers 3

				typedef enum {

				  PS_NOT_AVAILABLE = 0,