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//http://wiki.osdev.org/GUI
#include <stdarg.h>
#include "kernel.h"
#include "lib/logger/log.h" // logger facilities
#include "lib/int/stdint.h"
#define FOOLOS_MODULE_NAME "vesa"
#define FOOLSOS_SHOW_VESAMODES
typedef struct vbeinfo_struct{
char VbeSignature[4]; // == "VESA"
uint16_t VbeVersion; // == 0x0300 for VBE 3.0
uint16_t OemStringPtr[2]; // isa vbeFarPtr
uint8_t Capabilities[4];
uint16_t VideoModePtr[2]; // isa vbeFarPtr
uint16_t TotalMemory; // as # of 64KB blocks
}vbeinfo;
typedef struct ModeInfoBlock {
uint16_t attributes;
uint8_t winA,winB;
uint16_t granularity;
uint16_t winsize;
uint16_t segmentA, segmentB;
uint16_t realFctPtr[2];
// VBE_FAR(realFctPtr);
uint16_t pitch; // bytes per scanline
uint16_t Xres, Yres;
uint8_t Wchar, Ychar, planes, bpp, banks;
uint8_t memory_model, bank_size, image_pages;
uint8_t reserved0;
uint8_t red_mask, red_position;
uint8_t green_mask, green_position;
uint8_t blue_mask, blue_position;
uint8_t rsv_mask, rsv_position;
uint8_t directcolor_attributes;
volatile uint32_t physbase; // your LFB (Linear Framebuffer) address ;)
uint32_t reserved1;
uint16_t reserved2;
}vbemodeinfo;
typedef struct foolfont_struct
{
uint8_t line[10]; //every single fool font consists of 10 lines a 8 bit
}foolfont;
static foolfont *deffont;
static vbemodeinfo *VbeModeInfoBlock;
static console_x;
static console_y;
static console_lines;
static console_cols;
void vesa_set_physbase(uint32_t addr)
{
VbeModeInfoBlock->physbase=addr;
}
uint32_t vesa_init(vbeinfo *info,vbemodeinfo *mode,foolfont *rawfont)
{
//the only functionallu important init lines! (rest is log)
VbeModeInfoBlock=mode;
deffont=rawfont;
console_x=0;
console_y=0;
int line_height=12;
int col_width=10;
console_lines=mode->Yres/line_height;
console_cols=mode->Xres/col_width;
// vesa info
log(FOOLOS_MODULE_NAME,FOOLOS_LOG_INFO,"setup complete. vbe version: 0x%x / video mode ptr: 0x%x 0x%x",
info->VbeVersion, info->VideoModePtr[1], info->VideoModePtr[0]);
// vesa info on selected mode:
log(FOOLOS_MODULE_NAME,FOOLOS_LOG_INFO,"colors r:%d 0x%x g:%d 0x%x b:%d 0x%x",
mode->red_position,mode->red_mask,
mode->green_position,mode->green_mask,
mode->blue_position,mode->blue_mask);
log(FOOLOS_MODULE_NAME,FOOLOS_LOG_INFO,"res: %d * %d / banks: %d / attr: 0x%x / bpp: %d / physbase: 0x%x",
mode->Xres, mode->Yres, mode->banks, mode->attributes, mode->bpp,mode->physbase);
// vesa modes
// todo: take segment from vbeinfo!
#ifdef FOOLSOS_SHOW_VESAMODES
uint16_t *modeptr=info->VideoModePtr[0];
while(*modeptr!=0xffff&&*modeptr!=0)
{
log(FOOLOS_MODULE_NAME,FOOLOS_LOG_DEBUG,"mode supported : 0x%x", (*modeptr));
scr_put_hex(*modeptr);
modeptr++;
}
#endif
return VbeModeInfoBlock->physbase;
}
void PutPixel(int x,int y, int color){
//do not write memory outside the screen buffer, check parameters against the VBE mode info
if (x<0 || x>VbeModeInfoBlock->Xres|| y<0 || y>VbeModeInfoBlock->Yres) return;
if (x) x = (x*(VbeModeInfoBlock->bpp>>3)); // get bytes (divide by 8)
if (y) y = (y*VbeModeInfoBlock->pitch);
uint8_t *cTemp=VbeModeInfoBlock->physbase;
cTemp[x+y] = (uint8_t)(color & 0xff);
cTemp[x+y+1] = (uint8_t)((color>>8) & 0xff);
//cTemp[x+y+2] = (uint8_t)((color>>16) & 0xff);
}
void PutFont(char c, int x,int y, int color)
{
int fnt=0x126-0x20;
if(c>=0x20&&c<=0x126)fnt=c-0x20;
int posx, posy, sizex=8, sizey=10;
for(posx=x;posx<x+sizex;posx++)
{
for(posy=y;posy<y+sizey;posy++)
{
if(deffont[fnt].line[posy-y]&1<<(7-(posx-x)))
{
PutPixel(posx,posy,color);
}
else
{
PutPixel(posx,posy,0);
}
}
}
}
void PutString(char *str, int x,int y, int color, va_list va)
{
char buff[256];
tfp_sprintf(buff,str,va);
str=buff;
int i=x;
while((*str)!=0)
{
PutFont(*str, i,y, color);
i+=9; // spacing
str++;
}
}
void PutConsole(char *str, int color, va_list va)
{
char buff[256];
tfp_vsprintf(buff,str,va);
str=buff;
while((*str)!=0)
{
PutFont(*str, console_x*10,console_y*12, color);
str++;
console_x++;
if(console_x>console_cols);//PutConsoleNL();
}
}
void PutConsoleNL()
{
console_x=0;
console_y++;
if(console_y>=console_lines)console_y=0;
for(int i=0;i<console_cols;i++)
{
PutFont(' ',i*10,(console_y)*12,0);
}
}
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