text: /*
   * This file is part of Libav.
   *
   * Libav 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.
   *
   * Libav 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 Libav; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
   */
  
  // This header should only be used to simplify code where
  // threading is optional, not as a generic threading abstraction.
  
  #ifndef AVUTIL_THREAD_H
  #define AVUTIL_THREAD_H
  
  #include "config.h"
  
  #if HAVE_PTHREADS || HAVE_W32THREADS
  
  #if HAVE_PTHREADS
  #include <pthread.h>
  #else
  #include "compat/w32pthreads.h"
  #endif
  
  #define AVMutex pthread_mutex_t
  
  #define ff_mutex_init    pthread_mutex_init
  #define ff_mutex_lock    pthread_mutex_lock
  #define ff_mutex_unlock  pthread_mutex_unlock
  #define ff_mutex_destroy pthread_mutex_destroy
  
  #else
  
  #define AVMutex char
  
  #define ff_mutex_init(mutex, attr) (0)
  #define ff_mutex_lock(mutex) (0)
  #define ff_mutex_unlock(mutex) (0)
  #define ff_mutex_destroy(mutex) (0)
  
  #endif
  
  #endif /* AVUTIL_THREAD_H */
  