liberscribble/include/driver.h

Go to the documentation of this file.

/*
 * This file is part of liberscribble.
 *
 * liberscribble 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 2 of the License, or
 * (at your option) any later version.
 *
 * liberscribble 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/>.
 */

#ifndef DRIVER_H_
#define DRIVER_H_

// use kernel driver to fast draw pixel
// internal use
#include <sys/time.h>
#include "scbconfig.h"
#include "scbpoint.h"
#include <liberdm/erdm.h>
#include <glib.h>

#ifdef __cplusplus
extern "C"
{
#endif

typedef struct _DrvPointInfo
{
    unsigned short x;
    unsigned short y;
    unsigned char  size;
    unsigned char  color;
    unsigned char  pen_down;
}DrvPointInfo;

typedef struct _DrvPointsBuf
{
    unsigned int count;
    DrvPointInfo points [SCB_DEF_FAST_DRAW_BUF_LEN];
} DrvPointsBuf;
typedef DrvPointsBuf * DrvPointsBufPtr;

// for ioctl request
void scb_driver_init();
void scb_driver_close();
void scb_driver_draw(DrvPointsBufPtr ptr);

// fast draw control 
typedef struct _FastDrawContext
{
    struct timeval  t1, t2;         // start end
    DrvPointsBuf    points;
}FastDrawContext;

void scb_fast_draw_reset_context();
gboolean scb_fast_draw_now();
void scb_fast_draw_record(const ScbDevPointPtr ptr, 
                          const unsigned char size, 
                          const unsigned char color,
                          const unsigned char pen_down);
void scb_fast_draw();
void scb_fast_draw_points(DrvPointsBufPtr ptr);

#ifdef __cplusplus
}
#endif


#endif

---