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/* Simple Plugin API */
/* SPDX-FileCopyrightText: Copyright © 2019 Wim Taymans */
/* SPDX-License-Identifier: MIT */
#ifndef SPA_DEVICE_UTILS_H
#define SPA_DEVICE_UTILS_H
#ifdef __cplusplus
extern "C" {
#endif
#include <spa/pod/builder.h>
#include <spa/monitor/device.h>
#ifndef SPA_API_DEVICE_UTILS
#ifdef SPA_API_IMPL
#define SPA_API_DEVICE_UTILS SPA_API_IMPL
#else
#define SPA_API_DEVICE_UTILS static inline
#endif
#endif
/**
* \addtogroup spa_device
* \{
*/
struct spa_result_device_params_data {
struct spa_pod_builder *builder;
struct spa_result_device_params data;
};
SPA_API_DEVICE_UTILS void spa_result_func_device_params(void *data, int seq SPA_UNUSED, int res SPA_UNUSED,
uint32_t type SPA_UNUSED, const void *result)
{
struct spa_result_device_params_data *d =
(struct spa_result_device_params_data *)data;
const struct spa_result_device_params *r =
(const struct spa_result_device_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_DEVICE_UTILS int spa_device_enum_params_sync(struct spa_device *device,
uint32_t id, uint32_t *index,
const struct spa_pod *filter,
struct spa_pod **param,
struct spa_pod_builder *builder)
{
struct spa_result_device_params_data data = { builder, {0}};
struct spa_hook listener = {{0}, {0}, 0, 0};
static const struct spa_device_events device_events = {
.version = SPA_VERSION_DEVICE_EVENTS,
.info = NULL,
.result = spa_result_func_device_params,
};
int res;
spa_device_add_listener(device, &listener, &device_events, &data);
res = spa_device_enum_params(device, 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;
}
#define spa_device_emit(hooks,method,version,...) \
spa_hook_list_call_simple(hooks, struct spa_device_events, \
method, version, ##__VA_ARGS__)
#define spa_device_emit_info(hooks,i) spa_device_emit(hooks,info, 0, i)
#define spa_device_emit_result(hooks,s,r,t,res) spa_device_emit(hooks,result, 0, s, r, t, res)
#define spa_device_emit_event(hooks,e) spa_device_emit(hooks,event, 0, e)
#define spa_device_emit_object_info(hooks,id,i) spa_device_emit(hooks,object_info, 0, id, i)
/**
* \}
*/
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /* SPA_DEVICE_UTILS_H */