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/* Simple Plugin API
*
* Copyright © 2021 Wim Taymans
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#ifndef SPA_PARAM_LATENCY_UTILS_H
#define SPA_PARAM_LATENCY_UTILS_H
#ifdef __cplusplus
extern "C" {
#endif
/**
* \addtogroup spa_param
* \{
*/
#include <float.h>
#include <spa/pod/builder.h>
#include <spa/pod/parser.h>
#include <spa/param/param.h>
struct spa_latency_info {
enum spa_direction direction;
float min_quantum;
float max_quantum;
uint32_t min_rate;
uint32_t max_rate;
uint64_t min_ns;
uint64_t max_ns;
};
#define SPA_LATENCY_INFO(dir,...) (struct spa_latency_info) { .direction = (dir), ## __VA_ARGS__ }
static inline int
spa_latency_info_compare(const struct spa_latency_info *a, struct spa_latency_info *b)
{
if (a->min_quantum == b->min_quantum &&
a->max_quantum == b->max_quantum &&
a->min_rate == b->min_rate &&
a->max_rate == b->max_rate &&
a->min_ns == b->min_ns &&
a->max_ns == b->max_ns)
return 0;
return 1;
}
static inline void
spa_latency_info_combine_start(struct spa_latency_info *info, enum spa_direction direction)
{
*info = SPA_LATENCY_INFO(direction,
.min_quantum = FLT_MAX,
.max_quantum = 0.0f,
.min_rate = UINT32_MAX,
.max_rate = 0,
.min_ns = UINT64_MAX,
.max_ns = 0);
}
static inline void
spa_latency_info_combine_finish(struct spa_latency_info *info)
{
if (info->min_quantum == FLT_MAX)
info->min_quantum = 0;
if (info->min_rate == UINT32_MAX)
info->min_rate = 0;
if (info->min_ns == UINT64_MAX)
info->min_ns = 0;
}
static inline int
spa_latency_info_combine(struct spa_latency_info *info, const struct spa_latency_info *other)
{
if (info->direction != other->direction)
return -EINVAL;
if (other->min_quantum < info->min_quantum)
info->min_quantum = other->min_quantum;
if (other->max_quantum > info->max_quantum)
info->max_quantum = other->max_quantum;
if (other->min_rate < info->min_rate)
info->min_rate = other->min_rate;
if (other->max_rate > info->max_rate)
info->max_rate = other->max_rate;
if (other->min_ns < info->min_ns)
info->min_ns = other->min_ns;
if (other->max_ns > info->max_ns)
info->max_ns = other->max_ns;
return 0;
}
static inline int
spa_latency_parse(const struct spa_pod *latency, struct spa_latency_info *info)
{
int res;
spa_zero(*info);
if ((res = spa_pod_parse_object(latency,
SPA_TYPE_OBJECT_ParamLatency, NULL,
SPA_PARAM_LATENCY_direction, SPA_POD_Id(&info->direction),
SPA_PARAM_LATENCY_minQuantum, SPA_POD_OPT_Float(&info->min_quantum),
SPA_PARAM_LATENCY_maxQuantum, SPA_POD_OPT_Float(&info->max_quantum),
SPA_PARAM_LATENCY_minRate, SPA_POD_OPT_Int(&info->min_rate),
SPA_PARAM_LATENCY_maxRate, SPA_POD_OPT_Int(&info->max_rate),
SPA_PARAM_LATENCY_minNs, SPA_POD_OPT_Long(&info->min_ns),
SPA_PARAM_LATENCY_maxNs, SPA_POD_OPT_Long(&info->max_ns))) < 0)
return res;
info->direction = (enum spa_direction)(info->direction & 1);
return 0;
}
static inline struct spa_pod *
spa_latency_build(struct spa_pod_builder *builder, uint32_t id, const struct spa_latency_info *info)
{
return (struct spa_pod *)spa_pod_builder_add_object(builder,
SPA_TYPE_OBJECT_ParamLatency, id,
SPA_PARAM_LATENCY_direction, SPA_POD_Id(info->direction),
SPA_PARAM_LATENCY_minQuantum, SPA_POD_Float(info->min_quantum),
SPA_PARAM_LATENCY_maxQuantum, SPA_POD_Float(info->max_quantum),
SPA_PARAM_LATENCY_minRate, SPA_POD_Int(info->min_rate),
SPA_PARAM_LATENCY_maxRate, SPA_POD_Int(info->max_rate),
SPA_PARAM_LATENCY_minNs, SPA_POD_Long(info->min_ns),
SPA_PARAM_LATENCY_maxNs, SPA_POD_Long(info->max_ns));
}
struct spa_process_latency_info {
float quantum;
uint32_t rate;
uint64_t ns;
};
#define SPA_PROCESS_LATENCY_INFO_INIT(...) (struct spa_process_latency_info) { __VA_ARGS__ }
static inline int
spa_process_latency_parse(const struct spa_pod *latency, struct spa_process_latency_info *info)
{
int res;
spa_zero(*info);
if ((res = spa_pod_parse_object(latency,
SPA_TYPE_OBJECT_ParamProcessLatency, NULL,
SPA_PARAM_PROCESS_LATENCY_quantum, SPA_POD_OPT_Float(&info->quantum),
SPA_PARAM_PROCESS_LATENCY_rate, SPA_POD_OPT_Int(&info->rate),
SPA_PARAM_PROCESS_LATENCY_ns, SPA_POD_OPT_Long(&info->ns))) < 0)
return res;
return 0;
}
static inline struct spa_pod *
spa_process_latency_build(struct spa_pod_builder *builder, uint32_t id,
const struct spa_process_latency_info *info)
{
return (struct spa_pod *)spa_pod_builder_add_object(builder,
SPA_TYPE_OBJECT_ParamProcessLatency, id,
SPA_PARAM_PROCESS_LATENCY_quantum, SPA_POD_Float(info->quantum),
SPA_PARAM_PROCESS_LATENCY_rate, SPA_POD_Int(info->rate),
SPA_PARAM_PROCESS_LATENCY_ns, SPA_POD_Long(info->ns));
}
static inline int
spa_process_latency_info_add(const struct spa_process_latency_info *process,
struct spa_latency_info *info)
{
info->min_quantum += process->quantum;
info->max_quantum += process->quantum;
info->min_rate += process->rate;
info->max_rate += process->rate;
info->min_ns += process->ns;
info->max_ns += process->ns;
return 0;
}
/**
* \}
*/
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /* SPA_PARAM_LATENCY_UTILS_H */
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