mirror of
https://gitlab.freedesktop.org/pipewire/pipewire.git
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14310e66fe
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>
83 lines
1.7 KiB
C
83 lines
1.7 KiB
C
/* AVB support */
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/* SPDX-FileCopyrightText: Copyright © 2022 Wim Taymans */
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/* SPDX-License-Identifier: MIT */
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#ifndef AVB_STREAM_H
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#define AVB_STREAM_H
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#include <sys/socket.h>
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#include <sys/types.h>
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#include <linux/if_packet.h>
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#include <net/if.h>
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#include <spa/utils/ringbuffer.h>
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#include <spa/param/audio/format.h>
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#include <pipewire/pipewire.h>
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#define BUFFER_SIZE (1u<<16)
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#define BUFFER_MASK (BUFFER_SIZE-1)
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struct stream {
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struct spa_list link;
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struct server *server;
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uint16_t direction;
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uint64_t id;
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uint64_t peer_id;
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struct pw_stream *stream;
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struct spa_hook stream_listener;
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uint8_t addr[6];
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struct spa_source *source;
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int prio;
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int vlan_id;
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int mtt;
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int t_uncertainty;
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uint32_t frames_per_pdu;
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int ptime_tolerance;
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uint8_t pdu[2048];
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size_t hdr_size;
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size_t payload_size;
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size_t pdu_size;
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int64_t pdu_period;
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uint8_t pdu_seq;
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uint8_t prev_seq;
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uint8_t dbc;
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struct iovec iov[3];
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struct sockaddr_ll sock_addr;
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struct msghdr msg;
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char control[CMSG_SPACE(sizeof(uint64_t))];
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struct cmsghdr *cmsg;
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struct spa_ringbuffer ring;
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void *buffer_data;
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size_t buffer_size;
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uint64_t format;
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uint32_t stride;
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struct spa_audio_info info;
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struct avb_msrp_attribute *talker_attr;
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struct avb_msrp_attribute *listener_attr;
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struct avb_mvrp_attribute *vlan_attr;
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};
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#include "msrp.h"
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#include "mvrp.h"
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#include "maap.h"
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struct stream *server_create_stream(struct server *server, struct stream *stream,
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enum spa_direction direction, uint16_t index);
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void stream_destroy(struct stream *stream);
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int stream_activate(struct stream *stream, uint16_t index, uint64_t now);
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int stream_deactivate(struct stream *stream, uint64_t now);
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int stream_activate_virtual(struct stream *stream, uint16_t index);
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#endif /* AVB_STREAM_H */
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