framebuffer.h

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/***************************************************************************
 *   Copyright (C) 2009 by Rick L. Vinyard, Jr.                            *
 *   rvinyard@cs.nmsu.edu                                                  *
 *                                                                         *
 *   This file is part of the g13 library.                                 *
 *                                                                         *
 *   The g13 library is free software; you can redistribute it and/or      *
 *   modify it under the terms of the GNU General Public License           *
 *   version 3 as published by the Free Software Foundation.               *
 *                                                                         *
 *   The g13 library 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 software. If not see <http://www.gnu.org/licenses/>.  *
 ***************************************************************************/
#ifndef G13_FRAMEBUFFER_H
#define G13_FRAMEBUFFER_H

#include <linux/fb.h>

#include <g13/udev.h>

/* Frambuffer defines */
#define G13_FRAMEBUFFER_NAME "g13fb"             
#define G13_FRAMEBUFFER_WIDTH  (160)
#define G13_FRAMEBUFFER_LINE_LENGTH (160/8)
#define G13_FRAMEBUFFER_STRIDE G13_FRAMEBUFFER_LINE_LENGTH
#define G13_FRAMEBUFFER_HEIGHT (43)

#define G13_FRAMEBUFFER_SIZE   (G13_FRAMEBUFFER_LINE_LENGTH*G13_FRAMEBUFFER_HEIGHT)

typedef enum G13Mode {
  G13_RD=1,
  G13_WR=2,
  G13_RDWR=4,
} G13Mode;

int g13_device_get_fb_node( g13_device* device );

int g13_device_framebuffer_open( g13_device* device, G13Mode mode );

unsigned char* g13_device_framebuffer_mmap( g13_device* device, G13Mode mode );

int g13_device_framebuffer_munmap( unsigned char* map );



#endif