chromium/third_party/ffmpeg/libavutil/threadmessage.c

/*
 * Copyright (c) 2014 Nicolas George
 *
 * 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
 */

#include <limits.h>
#include <stddef.h>

#include "error.h"
#include "fifo.h"
#include "mem.h"
#include "threadmessage.h"
#include "thread.h"

struct AVThreadMessageQueue { … };

int av_thread_message_queue_alloc(AVThreadMessageQueue **mq,
                                  unsigned nelem,
                                  unsigned elsize)
{ … }

void av_thread_message_queue_set_free_func(AVThreadMessageQueue *mq,
                                           void (*free_func)(void *msg))
{ … }

void av_thread_message_queue_free(AVThreadMessageQueue **mq)
{ … }

int av_thread_message_queue_nb_elems(AVThreadMessageQueue *mq)
{ … }

#if HAVE_THREADS

static int av_thread_message_queue_send_locked(AVThreadMessageQueue *mq,
                                               void *msg,
                                               unsigned flags)
{ … }

static int av_thread_message_queue_recv_locked(AVThreadMessageQueue *mq,
                                               void *msg,
                                               unsigned flags)
{ … }

#endif /* HAVE_THREADS */

int av_thread_message_queue_send(AVThreadMessageQueue *mq,
                                 void *msg,
                                 unsigned flags)
{ … }

int av_thread_message_queue_recv(AVThreadMessageQueue *mq,
                                 void *msg,
                                 unsigned flags)
{ … }

void av_thread_message_queue_set_err_send(AVThreadMessageQueue *mq,
                                          int err)
{ … }

void av_thread_message_queue_set_err_recv(AVThreadMessageQueue *mq,
                                          int err)
{ … }

#if HAVE_THREADS
static int free_func_wrap(void *arg, void *buf, size_t *nb_elems)
{ … }
#endif

void av_thread_message_flush(AVThreadMessageQueue *mq)
{ … }