mirror of
https://gitlab.com/sortix/sortix.git
synced 2023-02-13 20:55:38 -05:00
76 lines
1.9 KiB
C++
76 lines
1.9 KiB
C++
/*******************************************************************************
|
|
|
|
Copyright(C) Jonas 'Sortie' Termansen 2011, 2012.
|
|
|
|
This file is part of Sortix.
|
|
|
|
Sortix 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.
|
|
|
|
Sortix 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
|
|
Sortix. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
vga.h
|
|
A Video Graphics Array driver.
|
|
|
|
*******************************************************************************/
|
|
|
|
#ifndef SORTIX_VGA_H
|
|
#define SORTIX_VGA_H
|
|
|
|
#include "device.h"
|
|
#include "stream.h"
|
|
|
|
namespace Sortix {
|
|
|
|
const size_t VGA_FONT_WIDTH = 8UL;
|
|
const size_t VGA_FONT_HEIGHT = 16UL;
|
|
const size_t VGA_FONT_NUMCHARS = 256UL;
|
|
const size_t VGA_FONT_CHARSIZE = VGA_FONT_WIDTH * VGA_FONT_HEIGHT / 8UL;
|
|
|
|
namespace VGA {
|
|
|
|
void Init();
|
|
void SetCursor(unsigned x, unsigned y);
|
|
const uint8_t* GetFont();
|
|
|
|
} // namespace VGA
|
|
|
|
// TODO: This class shouldn't be exposed publicly; it is used in a hack in the
|
|
// /dev filesystem. However, vga.cpp should register /dev/vga instead.
|
|
class DevVGA : public DevBuffer
|
|
{
|
|
public:
|
|
typedef DevBuffer BaseClass;
|
|
|
|
public:
|
|
DevVGA();
|
|
virtual ~DevVGA();
|
|
|
|
private:
|
|
size_t offset;
|
|
|
|
public:
|
|
virtual ssize_t Read(byte* dest, size_t count);
|
|
virtual ssize_t Write(const byte* src, size_t count);
|
|
virtual bool IsReadable();
|
|
virtual bool IsWritable();
|
|
virtual size_t BlockSize();
|
|
virtual uintmax_t Size();
|
|
virtual uintmax_t Position();
|
|
virtual bool Seek(uintmax_t position);
|
|
virtual bool Resize(uintmax_t size);
|
|
|
|
};
|
|
|
|
} // namespace Sortix
|
|
|
|
#endif
|
|
|