ppg_action.h

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/* Copyright 2017 noseglasses <shinynoseglasses@gmail.com>
 *
 * This program 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 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef PPG_ACTION_H
#define PPG_ACTION_H

#include "ppg_signals.h"

#include <stddef.h>
#include <stdbool.h>

typedef void (*PPG_Action_Callback_Fun)(bool activation, void *user_data);

typedef struct {
   PPG_Action_Callback_Fun func; 
   void *   user_data; 
} PPG_Action_Callback;

inline
void ppg_action_callback_init(PPG_Action_Callback *cb)
{
   cb->func = NULL;
   cb->user_data = NULL;
}

typedef struct {
   PPG_Action_Callback callback; 
} PPG_Action;

#define PPG_ACTION_USER_CALLBACK(FUNC, USER_DATA) \
   (PPG_Action) { \
      .callback = (PPG_Action_Callback) { \
         .func = (PPG_Action_Callback_Fun)FUNC, \
         .user_data = USER_DATA \
      } \
   }
   
#define PPG_ACTION_NOOP \
   (PPG_Action) { \
      .callback = (PPG_Action_Callback) { \
         .func = NULL, \
         .user_data = NULL \
      } \
   }

#endif