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Add inital console font rendering

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Justin C. Miller
2018-04-04 11:58:02 -07:00
parent 8914106bee
commit 58729b412a
7 changed files with 201 additions and 31 deletions
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44
src/modules/main/font.h
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@@ -1,32 +1,22 @@
#pragma once
#include <stdint.h>
/* PSF2 header format
* Taken from the Linux KBD documentation
* http://www.win.tue.nl/~aeb/linux/kbd/font-formats-1.html
*/
struct screen;
#define PSF2_MAGIC0 0x72
#define PSF2_MAGIC1 0xb5
#define PSF2_MAGIC2 0x4a
#define PSF2_MAGIC3 0x86
/* bits used in flags */
#define PSF2_HAS_UNICODE_TABLE 0x01
/* max version recognized so far */
#define PSF2_MAXVERSION 0
/* UTF8 separators */
#define PSF2_SEPARATOR 0xFF
#define PSF2_STARTSEQ 0xFE
struct psf2_header {
uint8_t magic[4];
uint32_t version;
uint32_t headersize; // offset of bitmaps in file
uint32_t flags;
uint32_t length; // number of glyphs
uint32_t charsize; // number of bytes for each character
uint32_t height, width; // max dimensions of glyphs
struct font {
uint16_t height;
uint16_t width;
uint16_t charsize;
uint16_t count;
uint8_t *data;
};
int font_init(void *header, struct font *font);
int font_draw(
struct font *f,
struct screen *s,
uint32_t glyph,
uint32_t color,
uint32_t x,
uint32_t y);