text: /*
   * Copyright (c) 2015 John R. Bradley <jrb@turrettech.com>
   *
   * Permission to use, copy, modify, and distribute this software for any
   * purpose with or without fee is hereby granted, provided that the above
   * copyright notice and this permission notice appear in all copies.
   *
   * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
   * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
   * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
   * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
   * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
   * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
   */
  
  #pragma once
  
  #include <libavutil/avutil.h>
  #include <pthread.h>
  #include <stdbool.h>
  
  #ifdef __cplusplus
  extern "C" {
  #endif
  
  typedef void (*ff_timer_callback)(void *opaque);
  
  struct ff_timer {
  	ff_timer_callback callback;
  	void *opaque;
  
  	pthread_mutex_t mutex;
  	pthread_mutexattr_t mutexattr;
  	pthread_cond_t cond;
  
  	pthread_t timer_thread;
  	uint64_t next_wake;
  	bool needs_wake;
  
  	bool abort;
  };
  
  typedef struct ff_timer ff_timer_t;
  
  bool ff_timer_init(struct ff_timer *timer,
  		ff_timer_callback callback, void *opaque);
  void ff_timer_free(struct ff_timer *timer);
  void ff_timer_schedule(struct ff_timer *timer, uint64_t microseconds);
  
  #ifdef __cplusplus
  }
  #endif
  