/*****************************************************************************
 *
 * 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_GESTURE_H
#define _GRAIL_GESTURE_H

#include <grail-touch.h>
#include <grail.h>
#include "gebuf.h"

#define DIM_EV_TYPE		EV_CNT
#define DIM_EV_TYPE_BYTES	(DIM_EV_TYPE >> 3)

#define DIM_SLOT	32
#define DIM_SLOT_BYTES	(DIM_SLOT >> 3)

#define DIM_CLIENT	32

struct slot_state {
	int type, id, status, x, y, nclient;
	struct grail_client_id client_id[DIM_CLIENT];
	grail_mask_t span[DIM_SLOT_BYTES];
	struct gebuf buf;
};

struct gesture_inserter {
	struct slot_state state[DIM_SLOT];
	grail_mask_t used[DIM_SLOT_BYTES];
	grail_time_t time;
	int gestureid;
};

int gin_init(struct grail *ge);
void gin_destroy(struct grail *ge);

void gin_frame_begin(struct grail *ge, grail_time_t time);
void gin_frame_end(struct grail *ge, grail_mask_t *filtered);

int gin_gesture_begin(struct grail *ge, const struct touch_frame *frame,
		      int type, int x, int y, const grail_mask_t *span);
void gin_gesture_discard(struct gesture_inserter *gin, int slot);
void gin_gesture_end(struct gesture_inserter *gin, int slot);
void gin_gesture_end_all(struct gesture_inserter *gin);

void gin_gesture_event(struct gesture_inserter *gin, int slot,
		       const grail_prop_t *prop);

#endif