mirror of
https://github.com/obsproject/obs-studio.git
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133 lines
3.2 KiB
C
133 lines
3.2 KiB
C
/*
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* Copyright (c) 2023 Lain Bailey <lain@obsproject.com>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include "../util/darray.h"
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#include "../util/threading.h"
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#include "decl.h"
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#include "proc.h"
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struct proc_info {
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struct decl_info func;
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void *data;
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proc_handler_proc_t callback;
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};
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static inline void proc_info_free(struct proc_info *pi)
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{
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decl_info_free(&pi->func);
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}
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struct proc_handler {
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/* TODO: replace with hash table lookup? */
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pthread_mutex_t mutex;
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DARRAY(struct proc_info) procs;
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};
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static struct proc_info *getproc(proc_handler_t *handler, const char *name)
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{
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for (size_t i = 0; i < handler->procs.num; i++) {
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struct proc_info *info = handler->procs.array + i;
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if (strcmp(info->func.name, name) == 0) {
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return info;
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}
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}
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return NULL;
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}
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/* ------------------------------------------------------------------------- */
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proc_handler_t *proc_handler_create(void)
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{
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struct proc_handler *handler = bmalloc(sizeof(struct proc_handler));
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if (pthread_mutex_init_recursive(&handler->mutex) != 0) {
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blog(LOG_ERROR, "Couldn't create proc_handler mutex");
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bfree(handler);
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return NULL;
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}
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da_init(handler->procs);
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return handler;
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}
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void proc_handler_destroy(proc_handler_t *handler)
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{
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if (!handler)
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return;
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for (size_t i = 0; i < handler->procs.num; i++)
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proc_info_free(handler->procs.array + i);
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da_free(handler->procs);
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pthread_mutex_destroy(&handler->mutex);
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bfree(handler);
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}
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void proc_handler_add(proc_handler_t *handler, const char *decl_string,
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proc_handler_proc_t proc, void *data)
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{
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if (!handler)
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return;
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struct proc_info pi;
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memset(&pi, 0, sizeof(struct proc_info));
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if (!parse_decl_string(&pi.func, decl_string)) {
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blog(LOG_ERROR, "Function declaration invalid: %s",
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decl_string);
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return;
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}
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pi.callback = proc;
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pi.data = data;
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pthread_mutex_lock(&handler->mutex);
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struct proc_info *existing = getproc(handler, pi.func.name);
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if (existing) {
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blog(LOG_WARNING, "Procedure '%s' already exists",
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pi.func.name);
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proc_info_free(&pi);
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} else {
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da_push_back(handler->procs, &pi);
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}
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pthread_mutex_unlock(&handler->mutex);
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}
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bool proc_handler_call(proc_handler_t *handler, const char *name,
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calldata_t *params)
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{
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if (!handler)
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return false;
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pthread_mutex_lock(&handler->mutex);
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struct proc_info *info = getproc(handler, name);
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struct proc_info info_copy;
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if (info)
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info_copy = *info;
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pthread_mutex_unlock(&handler->mutex);
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if (!info)
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return false;
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info_copy.callback(info_copy.data, params);
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return true;
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}
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