mirror of
https://gitlab.freedesktop.org/pipewire/pipewire.git
synced 2025-11-12 13:30:15 -05:00
09c4683ef1
Events are dispatched with hooks and have no return value. Make it possible to get the last resource and proxy sender value for where we need it.
116 lines
3.5 KiB
C
116 lines
3.5 KiB
C
/* Simple Plugin API
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*
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* Copyright © 2019 Wim Taymans
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#ifndef SPA_NODE_UTILS_H
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#define SPA_NODE_UTILS_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <spa/node/node.h>
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struct spa_result_node_params_data {
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struct spa_pod_builder *builder;
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struct spa_result_node_params data;
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};
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static inline void spa_result_func_node_params(void *data,
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int seq, int res, const void *result)
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{
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struct spa_result_node_params_data *d =
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(struct spa_result_node_params_data *) data;
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const struct spa_result_node_params *r =
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(const struct spa_result_node_params *) result;
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uint32_t offset = d->builder->state.offset;
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spa_pod_builder_raw_padded(d->builder, r->param, SPA_POD_SIZE(r->param));
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d->data.next = r->next;
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d->data.param = SPA_MEMBER(d->builder->data, offset, struct spa_pod);
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}
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static inline int spa_node_enum_params_sync(struct spa_node *node,
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uint32_t id, uint32_t *index,
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const struct spa_pod *filter,
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struct spa_pod **param,
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struct spa_pod_builder *builder)
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{
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struct spa_result_node_params_data data = { builder, };
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struct spa_hook listener = { 0 };
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static const struct spa_node_events node_events = {
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SPA_VERSION_NODE_EVENTS,
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.result = spa_result_func_node_params,
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};
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int res = 0;
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spa_node_add_listener(node, &listener, &node_events, &data);
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res = spa_node_enum_params(node, 0, id, *index, 1, filter);
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spa_hook_remove(&listener);
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if (data.data.param == NULL) {
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if (res > 0)
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res = 0;
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} else {
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*index = data.data.next;
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*param = data.data.param;
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res = 1;
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}
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return res;
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}
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static inline int spa_node_port_enum_params_sync(struct spa_node *node,
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enum spa_direction direction, uint32_t port_id,
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uint32_t id, uint32_t *index,
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const struct spa_pod *filter,
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struct spa_pod **param,
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struct spa_pod_builder *builder)
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{
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struct spa_result_node_params_data data = { builder, };
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struct spa_hook listener = { 0 };
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static const struct spa_node_events node_events = {
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SPA_VERSION_NODE_EVENTS,
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.result = spa_result_func_node_params,
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};
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int res;
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spa_node_add_listener(node, &listener, &node_events, &data);
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res = spa_node_port_enum_params(node, 0, direction, port_id,
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id, *index, 1, filter);
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spa_hook_remove(&listener);
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if (data.data.param == NULL) {
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if (res > 0)
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res = 0;
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} else {
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*index = data.data.next;
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*param = data.data.param;
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res = 1;
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}
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return res;
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}
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#ifdef __cplusplus
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} /* extern "C" */
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#endif
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#endif /* SPA_NODE_UTILS_H */
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