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/* Simple Plugin API */
/* SPDX-FileCopyrightText: Copyright © 2019 Wim Taymans */
/* SPDX-License-Identifier: MIT */
#ifndef SPA_NODE_UTILS_H
#define SPA_NODE_UTILS_H
#ifdef __cplusplus
extern "C" {
#endif
/**
* \addtogroup spa_node
* \{
*/
#include <spa/pod/builder.h>
#include <spa/node/node.h>
#ifndef SPA_API_NODE_UTILS
#ifdef SPA_API_IMPL
#define SPA_API_NODE_UTILS SPA_API_IMPL
#else
#define SPA_API_NODE_UTILS static inline
#endif
#endif
struct spa_result_node_params_data {
struct spa_pod_builder *builder;
struct spa_result_node_params data;
};
SPA_API_NODE_UTILS void spa_result_func_node_params(void *data,
int seq SPA_UNUSED, int res SPA_UNUSED, uint32_t type SPA_UNUSED, const void *result)
{
struct spa_result_node_params_data *d =
(struct spa_result_node_params_data *) data;
const struct spa_result_node_params *r =
(const struct spa_result_node_params *) result;
uint32_t offset = d->builder->state.offset;
if (spa_pod_builder_raw_padded(d->builder, r->param, SPA_POD_SIZE(r->param)) < 0)
return;
d->data.next = r->next;
d->data.param = spa_pod_builder_deref(d->builder, offset);
}
SPA_API_NODE_UTILS int spa_node_enum_params_sync(struct spa_node *node,
uint32_t id, uint32_t *index,
const struct spa_pod *filter,
struct spa_pod **param,
struct spa_pod_builder *builder)
{
struct spa_result_node_params_data data = { builder, {0}};
struct spa_hook listener = {{0}, {0}, 0, 0};
static const struct spa_node_events node_events = {
.version = SPA_VERSION_NODE_EVENTS,
.info = NULL,
.port_info = NULL,
.result = spa_result_func_node_params,
};
int res;
res = spa_node_add_listener(node, &listener, &node_events, &data);
if (res >= 0) {
res = spa_node_enum_params(node, 0, id, *index, 1, filter);
spa_hook_remove(&listener);
}
if (data.data.param == NULL) {
if (res > 0)
res = 0;
} else {
*index = data.data.next;
*param = data.data.param;
res = 1;
}
return res;
}
SPA_API_NODE_UTILS int spa_node_port_enum_params_sync(struct spa_node *node,
enum spa_direction direction, uint32_t port_id,
uint32_t id, uint32_t *index,
const struct spa_pod *filter,
struct spa_pod **param,
struct spa_pod_builder *builder)
{
struct spa_result_node_params_data data = { builder, {0}};
struct spa_hook listener = {{0}, {0}, 0, 0};
static const struct spa_node_events node_events = {
.version = SPA_VERSION_NODE_EVENTS,
.info = NULL,
.port_info = NULL,
.result = spa_result_func_node_params,
};
int res;
res = spa_node_add_listener(node, &listener, &node_events, &data);
if (res >= 0) {
res = spa_node_port_enum_params(node, 0, direction, port_id,
id, *index, 1, filter);
spa_hook_remove(&listener);
}
if (data.data.param == NULL) {
if (res > 0)
res = 0;
} else {
*index = data.data.next;
*param = data.data.param;
res = 1;
}
return res;
}
#define spa_node_emit(hooks,method,version,...) \
spa_hook_list_call_simple(hooks, struct spa_node_events, \
method, version, ##__VA_ARGS__)
#define spa_node_emit_info(hooks,...) spa_node_emit(hooks,info, 0, __VA_ARGS__)
#define spa_node_emit_port_info(hooks,...) spa_node_emit(hooks,port_info, 0, __VA_ARGS__)
#define spa_node_emit_result(hooks,...) spa_node_emit(hooks,result, 0, __VA_ARGS__)
#define spa_node_emit_event(hooks,...) spa_node_emit(hooks,event, 0, __VA_ARGS__)
#define spa_node_call(callbacks,method,version,...) \
({ \
int _res; \
spa_callbacks_call_fast_res(callbacks, struct spa_node_callbacks, \
_res, method, version, ##__VA_ARGS__); \
_res; \
})
#define spa_node_call_ready(hook,...) spa_node_call(hook, ready, 0, __VA_ARGS__)
#define spa_node_call_reuse_buffer(hook,...) spa_node_call(hook, reuse_buffer, 0, __VA_ARGS__)
#define spa_node_call_xrun(hook,...) spa_node_call(hook, xrun, 0, __VA_ARGS__)
/**
* \}
*/
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /* SPA_NODE_UTILS_H */