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/*****************************************************************************
*
* grail - Gesture Recognition And Instantiation Library
*
* Copyright (C) 2010 Canonical Ltd.
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU 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
* 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/>.
*
* Authors:
* Henrik Rydberg <rydberg@bitmath.org>
*
****************************************************************************/
#ifndef _GRAIL_TOUCH_ENGINE_H
#define _GRAIL_TOUCH_ENGINE_H
#include <touch-dev.h>
#define DIM_TOUCHES 32
struct touch_frame {
int ntouch;
int slot;
struct touch touch[DIM_TOUCHES];
};
static inline int next_slot(const struct touch_frame *frame, int slot)
{
return frame->touch[slot].next;
}
struct touch_engine {
void (*sync)(struct touch_engine *engine, touch_time_t time);
struct touch_frame frame;
void *priv;
};
void touch_engine_init(struct touch_engine *engine,
void (*sync)(struct touch_engine *engine,
touch_time_t time),
void *priv);
void touch_engine_attach(struct touch_engine *engine, struct touch_dev *dev);
void touch_engine_detach(struct touch_engine *engine, struct touch_dev *dev);
#endif
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