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latency.h
Go to the documentation of this file.
/* Simple Plugin API */
/* SPDX-FileCopyrightText: Copyright © 2023 Wim Taymans */
/* SPDX-License-Identifier: MIT */
#ifndef SPA_PARAM_LATENY_H
#define SPA_PARAM_LATENY_H
#include <spa/param/param.h>
#ifdef __cplusplus
extern "C" {
#endif
enum spa_param_latency {
SPA_PARAM_LATENCY_START,
SPA_PARAM_LATENCY_direction,
SPA_PARAM_LATENCY_minQuantum,
SPA_PARAM_LATENCY_maxQuantum,
SPA_PARAM_LATENCY_minRate,
SPA_PARAM_LATENCY_maxRate,
SPA_PARAM_LATENCY_minNs,
SPA_PARAM_LATENCY_maxNs,
};
struct spa_latency_info {
enum spa_direction direction;
float min_quantum;
float max_quantum;
int32_t min_rate;
int32_t max_rate;
int64_t min_ns;
int64_t max_ns;
};
#define SPA_LATENCY_INFO(dir,...) ((struct spa_latency_info) { .direction = (dir), ## __VA_ARGS__ })
#define SPA_LATENCY_INFO_UNSET(dir) SPA_LATENCY_INFO(dir, \
.min_quantum = FLT_MAX, .max_quantum = FLT_MIN, \
.min_rate = INT32_MAX, .max_rate = INT32_MIN, \
.min_ns = INT64_MAX, .max_ns = INT64_MIN)
* Properties for SPA_TYPE_OBJECT_ParamProcessLatency
*
* The processing latency indicates logical time delay between a sample in an input port,
* and a corresponding sample in an output port, relative to the graph time.
*/
enum spa_param_process_latency {
SPA_PARAM_PROCESS_LATENCY_START,
SPA_PARAM_PROCESS_LATENCY_quantum,
SPA_PARAM_PROCESS_LATENCY_rate,
SPA_PARAM_PROCESS_LATENCY_ns,
};
struct spa_process_latency_info {
float quantum;
int32_t rate;
int64_t ns;
};
#define SPA_PROCESS_LATENCY_INFO_INIT(...) ((struct spa_process_latency_info) { __VA_ARGS__ })
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /* SPA_PARAM_LATENY_H */
spa_param_process_latency
spa_param_process_latency
Properties for SPA_TYPE_OBJECT_ParamProcessLatency.
Definition latency.h:77
spa_param_latency
spa_param_latency
Properties for SPA_TYPE_OBJECT_ParamLatency.
Definition latency.h:42
SPA_PARAM_PROCESS_LATENCY_rate
@ SPA_PARAM_PROCESS_LATENCY_rate
latency (Int) relative to graph rate
Definition latency.h:80
SPA_PARAM_PROCESS_LATENCY_START
@ SPA_PARAM_PROCESS_LATENCY_START
Definition latency.h:78
SPA_PARAM_PROCESS_LATENCY_ns
@ SPA_PARAM_PROCESS_LATENCY_ns
latency (Long) in nanoseconds
Definition latency.h:81
SPA_PARAM_PROCESS_LATENCY_quantum
@ SPA_PARAM_PROCESS_LATENCY_quantum
latency relative to quantum (Float)
Definition latency.h:79
SPA_PARAM_LATENCY_maxNs
@ SPA_PARAM_LATENCY_maxNs
max latency (Long) in nanoseconds
Definition latency.h:50
SPA_PARAM_LATENCY_minRate
@ SPA_PARAM_LATENCY_minRate
min latency (Int) relative to graph rate
Definition latency.h:47
SPA_PARAM_LATENCY_minQuantum
@ SPA_PARAM_LATENCY_minQuantum
min latency relative to quantum (Float)
Definition latency.h:45
SPA_PARAM_LATENCY_START
@ SPA_PARAM_LATENCY_START
Definition latency.h:43
SPA_PARAM_LATENCY_maxRate
@ SPA_PARAM_LATENCY_maxRate
max latency (Int) relative to graph rate
Definition latency.h:48
SPA_PARAM_LATENCY_maxQuantum
@ SPA_PARAM_LATENCY_maxQuantum
max latency relative to quantum (Float)
Definition latency.h:46
SPA_PARAM_LATENCY_direction
@ SPA_PARAM_LATENCY_direction
direction, input/output (Id enum spa_direction)
Definition latency.h:44
SPA_PARAM_LATENCY_minNs
@ SPA_PARAM_LATENCY_minNs
min latency (Long) in nanoseconds
Definition latency.h:49
spa_direction
spa_direction
Definition defs.h:106
param.h
spa/param/param.h
spa_latency_info
helper structure for managing latency objects
Definition latency.h:54
spa_latency_info::min_rate
int32_t min_rate
Definition latency.h:58
spa_latency_info::min_ns
int64_t min_ns
Definition latency.h:60
spa_latency_info::max_rate
int32_t max_rate
Definition latency.h:59
spa_latency_info::direction
enum spa_direction direction
Definition latency.h:55
spa_latency_info::max_quantum
float max_quantum
Definition latency.h:57
spa_latency_info::min_quantum
float min_quantum
Definition latency.h:56
spa_latency_info::max_ns
int64_t max_ns
Definition latency.h:61
spa_process_latency_info
Helper structure for managing process latency objects.
Definition latency.h:85
spa_process_latency_info::ns
int64_t ns
Definition latency.h:88
spa_process_latency_info::quantum
float quantum
Definition latency.h:86
spa_process_latency_info::rate
int32_t rate
Definition latency.h:87