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/*****************************************************************************
*
* grail - Gesture Recognition And Instantiation Library
*
* Copyright (C) 2010 Canonical Ltd.
* Copyright (C) 2010 Henrik Rydberg <rydberg@bitmath.org>
*
* 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/>.
*
****************************************************************************/
#include "grail-inserter.h"
#include "grail-recognizer.h"
#include <grail.h>
#include <string.h>
#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
#include <malloc.h>
#include <errno.h>
#include "evbuf.h"
struct grail_impl {
struct touch_dev dev;
struct touch_engine engine;
struct evbuf evbuf;
int filter_abs;
};
static void tp_event(struct touch_engine *engine,
const struct input_event *ev)
{
struct grail *ge = engine->priv;
struct grail_impl *x = ge->impl;
evbuf_put(&x->evbuf, ev);
}
static void tp_sync(struct touch_engine *engine,
const struct input_event *syn)
{
struct input_event ev;
struct grail *ge = engine->priv;
struct grail_impl *x = ge->impl;
struct gesture_recognizer *gru = ge->gru;
struct touch_frame *frame = &engine->frame;
grail_mask_t filtered[DIM_EV_TYPE_BYTES];
int dofilt, nevent = 0;
gin_frame_begin(ge, frame);
gru_recognize(ge, frame);
gin_frame_end(ge, filtered, sizeof(filtered), frame);
dofilt = gru->move.multi || gru->move.single && x->filter_abs;
if (!ge->event) {
evbuf_clear(&x->evbuf);
return;
}
while (!evbuf_empty(&x->evbuf)) {
evbuf_get(&x->evbuf, &ev);
if (dofilt && grail_mask_get(filtered, ev.type))
continue;
ge->event(ge, &ev);
nevent++;
}
if (nevent)
ge->event(ge, syn);
}
void grail_filter_abs_events(struct grail *ge, int usage)
{
struct grail_impl *x = ge->impl;
x->filter_abs = usage;
}
int grail_open(struct grail *ge, int fd)
{
struct grail_impl *x;
int ret;
x = calloc(1, sizeof(*x));
if (!x)
return -ENOMEM;
ge->impl = x;
ret = gin_init(ge);
if (ret)
goto freemem;
ret = touch_dev_open(&x->dev, fd);
if (ret)
goto freegin;
ret = gru_init(ge);
if (ret)
goto freedev;
touch_engine_init(&x->engine, tp_event, tp_sync, ge);
touch_engine_attach(&x->engine, &x->dev);
return 0;
freedev:
touch_dev_close(&x->dev, fd);
freegin:
gin_destroy(ge);
freemem:
free(x);
ge->impl = 0;
return ret;
}
void grail_close(struct grail *ge, int fd)
{
struct grail_impl *x = ge->impl;
void *status;
touch_engine_detach(&x->engine, &x->dev);
gru_destroy(ge);
touch_dev_close(&x->dev, fd);
gin_destroy(ge);
free(ge->impl);
ge->impl = 0;
}
int grail_idle(struct grail *ge, int fd, int ms)
{
struct grail_impl *x = ge->impl;
return touch_dev_idle(&x->dev, fd, ms);
}
int grail_pull(struct grail *ge, int fd)
{
struct grail_impl *x = ge->impl;
return touch_dev_pull(&x->dev, fd);
}
void grail_get_units(struct grail_coord *min, struct grail_coord *max,
const struct grail *ge)
{
const struct touch_dev_caps *caps = &ge->impl->dev.caps;
min->x = caps->info[TP_POS_X].minimum;
min->y = caps->info[TP_POS_Y].minimum;
max->x = caps->info[TP_POS_X].maximum;
max->y = caps->info[TP_POS_Y].maximum;
}
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