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module-avb: extend transport abstraction to stream data path

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Add stream_setup_socket and stream_send ops to avb_transport_ops so the
stream data plane can use the same pluggable transport backend as the
control plane. Move the raw AF_PACKET socket setup from stream.c into
avdecc.c as raw_stream_setup_socket(), and add a raw_stream_send()
wrapper around sendmsg().

Add a stream list (spa_list) to struct server so streams can be iterated
after creation, and add stream_activate_virtual() for lightweight
activation without MRP/MAAP network operations.

Implement loopback stream ops: eventfd-based dummy sockets and no-op
send that discards audio data. This enables virtual AVB nodes that work
without network hardware or privileges.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
Christian F.K. Schaller 2026-04-07 17:39:04 -04:00 • committed by Wim Taymans
parent ffa855d76e
commit 14310e66fe
5 changed files with 176 additions and 78 deletions
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src/modules/module-avb/stream.h
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@ -78,5 +78,6 @@ void stream_destroy(struct stream *stream);
int stream_activate(struct stream *stream, uint16_t index, uint64_t now);
int stream_deactivate(struct stream *stream, uint64_t now);
int stream_activate_virtual(struct stream *stream, uint16_t index);
#endif /* AVB_STREAM_H */