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/*
* Copyright (C) 2004 Douglas Lowder
*
* SPDX-License-Identifier: LGPL-2.1
*/
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include "config.h"
#include "tslib-private.h"
struct mk712_ts_event { /* Used in the Hitachi Webpad */
unsigned int header;
unsigned int x;
unsigned int y;
unsigned int reserved;
};
static int mk712_read(struct tslib_module_info *inf, struct ts_sample *samp,
int nr)
{
struct tsdev *ts = inf->dev;
struct mk712_ts_event *mk712_evt;
int ret;
int nr_read;
mk712_evt = alloca(sizeof(*mk712_evt) * nr);
ret = read(ts->fd, mk712_evt, sizeof(*mk712_evt) * nr);
if (ret > 0) {
nr_read = ret / sizeof(*mk712_evt);
while (ret >= (int)sizeof(*mk712_evt)) {
samp->x = (short)mk712_evt->x;
samp->y = (short)mk712_evt->y;
if (mk712_evt->header == 0)
samp->pressure = 1;
else
samp->pressure = 0;
#ifdef DEBUG
fprintf(stderr, "RAW---------------------------> %d %d %d\n",
samp->x, samp->y, samp->pressure);
#endif /*DEBUG*/
gettimeofday(&samp->tv, NULL);
samp++;
mk712_evt++;
ret -= sizeof(*mk712_evt);
}
} else {
return -1;
}
ret = nr_read;
return ret;
}
static const struct tslib_ops mk712_ops = {
.read = mk712_read,
};
TSAPI struct tslib_module_info *mk712_mod_init(__attribute__ ((unused)) struct tsdev *dev,
__attribute__ ((unused))const char *params)
{
struct tslib_module_info *m;
m = malloc(sizeof(struct tslib_module_info));
if (m == NULL)
return NULL;
m->ops = &mk712_ops;
return m;
}
#ifndef TSLIB_STATIC_MK712_MODULE
TSLIB_MODULE_INIT(mk712_mod_init);
#endif
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