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io: flesh out the node IO_Latency

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Make this more useful by adding the capture and playback latency.

This structure can be used to say how much latency there is between the
capture and playback hardware.
This commit is contained in:
Wim Taymans 2026-06-30 12:29:48 +02:00
parent 5e521d3532
commit e42657f030
1 changed files with 5 additions and 6 deletions
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11
spa/include/spa/node/io.h
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@ -33,8 +33,7 @@ enum spa_io_type {
SPA_IO_Buffers, /**< area to exchange buffers, struct spa_io_buffers */ SPA_IO_Buffers, /**< area to exchange buffers, struct spa_io_buffers */
SPA_IO_Range, /**< expected byte range, struct spa_io_range (currently not used in PipeWire) */ SPA_IO_Range, /**< expected byte range, struct spa_io_range (currently not used in PipeWire) */
SPA_IO_Clock, /**< area to update clock information, struct spa_io_clock */ SPA_IO_Clock, /**< area to update clock information, struct spa_io_clock */
SPA_IO_Latency, /**< latency reporting, struct spa_io_latency (currently not used in SPA_IO_Latency, /**< latency reporting, struct spa_io_latency */
* PipeWire). \see spa_param_latency */
SPA_IO_Control, /**< area for control messages, struct spa_io_sequence */ SPA_IO_Control, /**< area for control messages, struct spa_io_sequence */
SPA_IO_Notify, /**< area for notify messages, struct spa_io_sequence */ SPA_IO_Notify, /**< area for notify messages, struct spa_io_sequence */
SPA_IO_Position, /**< position information in the graph, struct spa_io_position */ SPA_IO_Position, /**< position information in the graph, struct spa_io_position */
@ -207,12 +206,12 @@ struct spa_io_video_size {
/** /**
* Latency reporting * Latency reporting
* *
* Currently not used in PipeWire. Instead, \see spa_param_latency * This gives the latency to the capture and playback hardware.
*/ */
struct spa_io_latency { struct spa_io_latency {
struct spa_fraction rate; /**< rate for min/max */ struct spa_fraction rate; /**< rate for latencies */
uint64_t min; /**< min latency */ int64_t capture_latency; /**< capture latency */
uint64_t max; /**< max latency */ int64_t playback_latency; /**< playback latency */
}; };
/** control stream, io area for SPA_IO_Control and SPA_IO_Notify */ /** control stream, io area for SPA_IO_Control and SPA_IO_Notify */