1/*
2 * This file is part of FFmpeg.
3 *
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.
8 *
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.
13 *
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
17 */
18
19#ifndef AVUTIL_SLICETHREAD_H
20#define AVUTIL_SLICETHREAD_H
21
22typedef struct AVSliceThread AVSliceThread;
23
24/**
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
32 */
33int 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),
36                              int nb_threads);
37
38/**
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
43 */
44void avpriv_slicethread_execute(AVSliceThread *ctx, int nb_jobs, int execute_main);
45
46/**
47 * Destroy slice threading context.
48 * @param pctx pointer to context
49 */
50void avpriv_slicethread_free(AVSliceThread **pctx);
51
52#endif
53