Node callbacks. More...

Data Fields
uint32_t	version

int(*	ready )(void *data, int state)

int(*	reuse_buffer )(void *data, uint32_t port_id, uint32_t buffer_id)

int(*	xrun )(void data, uint64_t trigger, uint64_t delay, struct spa_pod info)

Detailed Description

Node callbacks.

Callbacks are called from the real-time data thread. Only one callback structure can be set on an spa_node.

Examples: export-sink.c, export-source.c, local-v4l2.c, spa/examples/adapter-control.c, spa/examples/example-control.c, spa/examples/local-libcamera.c, and spa/examples/local-v4l2.c.

Field Documentation

uint32_t spa_node_callbacks::version

int(* spa_node_callbacks::ready) (void *data, int state)

Parameters

node	a spa_node

The node is ready for processing.

When this function is NULL, synchronous operation is requested on the ports.

int(* spa_node_callbacks::reuse_buffer) (void *data, uint32_t port_id, uint32_t buffer_id)

Parameters

The node has a buffer that can be reused.

When this function is NULL, the buffers to reuse will be set in the io area of the input ports.

int(* spa_node_callbacks::xrun) (void *data, uint64_t trigger, uint64_t delay, struct spa_pod *info)

Parameters

data	user data
trigger	the timestamp in microseconds when the xrun happened
delay	the amount of microseconds of xrun.
info	an object with extra info (NULL for now)

The node has encountered an over or underrun

The info contains an object with more information

The documentation for this struct was generated from the following file: