2 * This file is part of FFmpeg.
4 * FFmpeg is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
9 * FFmpeg is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with FFmpeg; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 #ifndef AVUTIL_SLICETHREAD_H
20 #define AVUTIL_SLICETHREAD_H
22 typedef struct AVSliceThread AVSliceThread;
25 * Create slice threading context.
26 * @param pctx slice threading context returned here
27 * @param priv private pointer to be passed to callback function
28 * @param worker_func callback function to be executed
29 * @param main_func special callback function, called from main thread, may be NULL
30 * @param nb_threads number of threads, 0 for automatic, must be >= 0
31 * @return return number of threads or negative AVERROR on failure
33 int avpriv_slicethread_create(AVSliceThread **pctx, void *priv,
34 void (*worker_func)(void *priv, int jobnr, int threadnr, int nb_jobs, int nb_threads),
35 void (*main_func)(void *priv),
39 * Execute slice threading.
40 * @param ctx slice threading context
41 * @param nb_jobs number of jobs, must be > 0
42 * @param execute_main also execute main_func
44 void avpriv_slicethread_execute(AVSliceThread *ctx, int nb_jobs, int execute_main);
47 * Destroy slice threading context.
48 * @param pctx pointer to context
50 void avpriv_slicethread_free(AVSliceThread **pctx);