wb_channels.h

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/*
 *  wb_channels.h
 *  gusimplewhiteboard
 *
 *  Created by Josh Stover on 07/09/2015.
 *  Copyright © 2015 Josh Stover. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above
 *    copyright notice, this list of conditions and the following
 *    disclaimer in the documentation and/or other materials
 *    provided with the distribution.
 *
 * 3. All advertising materials mentioning features or use of this
 *    software must display the following acknowledgement:
 *
 *        This product includes software developed by Rene Hexel.
 *
 * 4. Neither the name of the author nor the names of contributors
 *    may be used to endorse or promote products derived from this
 *    software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
 * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * -----------------------------------------------------------------------
 * This program is free software; you can redistribute it and/or
 * modify it under the above terms or under the terms of the GNU
 * General Public License as published by the Free Software Foundation;
 * either version 2 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, see http://www.gnu.org/licenses/
 * or write to the Free Software Foundation, Inc., 51 Franklin Street,
 * Fifth Floor, Boston, MA  02110-1301, USA.
 *
 */
 
#ifndef wb_channels_h
#define wb_channels_h
 
#include <gu_util.h>
 
#define CHANNELS_BYTES  (sizeof(gu_simple_message)) 
#define CHANNELS_COUNT  (CHANNELS_BYTES*8)          
 
#define CHANNEL_SEND(s, n)  ( (s)->_channels[(n)/8]  |=  (1<<((n)%8)) )
 
#define CHANNEL_CLEAR(s, n) ( (s)->_channels[(n)/8]  &= ~(1<<((n)%8)) )
 
#define CHANNEL_WAITING(s, n)   ( ((s)->_channels[(n)/8]  &  (1<<((n)%8))) != 0 )
 
struct wb_channels {
 
    // 1-bit channels array
    ARRAY_PROPERTY(uint8_t, channels, CHANNELS_BYTES)
 
#ifdef __cplusplus
    wb_channels() { memset(this, 0, sizeof(*this)); }
#endif
 
};
 
#endif /* wb_clocks_h */