/* * Copyright (C) 2023 Nuo Mi * * This file is part of FFmpeg. * * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef AVUTIL_EXECUTOR_H#define AVUTIL_EXECUTOR_H typedef struct AVExecutor AVExecutor;typedef struct AVTask AVTask; struct AVTask {    AVTask *next;}; typedef struct AVTaskCallbacks {    void *user_data;     int local_context_size;     // return 1 if a's priority > b's priority    int (*priority_higher)(const AVTask *a, const AVTask *b);     // task is ready for run    int (*ready)(const AVTask *t, void *user_data);     // run the task    int (*run)(AVTask *t, void *local_context, void *user_data);} AVTaskCallbacks; /** * Alloc executor * @param callbacks callback structure for executor * @param thread_count worker thread number, 0 for run on caller's thread directly * @return return the executor */AVExecutor* av_executor_alloc(const AVTaskCallbacks *callbacks, int thread_count); /** * Free executor * @param e  pointer to executor */void av_executor_free(AVExecutor **e); /** * Add task to executor * @param e pointer to executor * @param t pointer to task. If NULL, it will wakeup one work thread */void av_executor_execute(AVExecutor *e, AVTask *t); #endif //AVUTIL_EXECUTOR_H