christoph/lecture-operating-system-development
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churl
2022-06-17 15:27:48 +02:00
parent 01495fda93
commit d29dc064cb
23 changed files with 19128 additions and 2 deletions
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c_os/user/VBEdemo.cc Normal file
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/*****************************************************************************
* *
* V B E D E M O *
* *
*---------------------------------------------------------------------------*
* Beschreibung: Demo zu VESA. *
* *
* Autor: Michael Schoettner, HHU, 26.12.2016 *
*****************************************************************************/
#include "kernel/Globals.h"
#include "user/VBEdemo.h"
#include "devices/fonts/Fonts.h"
// Bitmap
#include "bmp_hhu.cc"
/*****************************************************************************
* Methode: VBEdemo::linInterPol1D *
*---------------------------------------------------------------------------*
* Beschreibung: Farbwert in einer Dimension interpoliert berechnen. *
*****************************************************************************/
int VBEdemo::linInterPol1D(int x, int xr, int l, int r) {
return ((((l>>16)*(xr-x)+(r>>16)*x)/xr)<<16)
|(((((l>>8)&0xFF)*(xr-x)+((r>>8)&0xFF)*x)/xr)<<8)
|(((l&0xFF)*(xr-x)+(r&0xFF)*x)/xr);
}
/*****************************************************************************
* Methode: VBEdemo::linInterPol2D *
*---------------------------------------------------------------------------*
* Beschreibung: Farbwert in zwei Dimensionen interpoliert berechnen. *
*****************************************************************************/
int VBEdemo::linInterPol2D(int x, int y, int lt, int rt, int lb, int rb) {
return linInterPol1D(y, vesa.yres,
linInterPol1D(x, vesa.xres, lt, rt),
linInterPol1D(x, vesa.xres, lb, rb) );
}
/*****************************************************************************
* Methode: VBEdemo::drawColors *
*---------------------------------------------------------------------------*
* Beschreibung: Pixel-Demo. *
*****************************************************************************/
void VBEdemo::drawColors () {
int x_res=640, y_res=480;
for (int y=0; y<y_res; y++) {
for (int x=0; x<x_res; x++) {
vesa.drawPixel(x, y, linInterPol2D(x, y, 0x0000FF, 0x00FF00, 0xFF0000, 0xFFFF00));
}
}
}
/*****************************************************************************
* Methode: VBEdemo::drawBitmap *
*---------------------------------------------------------------------------*
* Beschreibung: Bitmap aus GIMP ausgeben. *
*****************************************************************************/
void VBEdemo::drawBitmap () {
unsigned int sprite_height = hhu.height;
unsigned int sprite_width = hhu.width;
unsigned int sprite_bpp = hhu.bytes_per_pixel;
unsigned char *sprite_pixel = (unsigned char*)hhu.pixel_data;
/* Hier muss Code eingefuegt werden */
}
/*****************************************************************************
* Methode: VBEdemo::drawFonts *
*---------------------------------------------------------------------------*
* Beschreibung: Fonts ausgeben. *
*****************************************************************************/
void VBEdemo::drawFonts () {
/* Hier muss Code eingefuegt werden */
}
/*****************************************************************************
* Methode: VBEdemo::run *
*---------------------------------------------------------------------------*
* Beschreibung: Der Anwendungsthread erzeugt drei Threads die Zaehler *
* ausgeben und terminiert sich selbst. *
*****************************************************************************/
void VBEdemo::run () {
// In den Grafikmodus schalten (32-Bit Farbtiefe)
vesa.initGraphicMode(MODE_640_480_24BITS);
vesa.setDrawingBuff(BUFFER_VISIBLE);
drawColors();
/* Hier muss Code eingefuegt werden */
// selbst terminieren
scheduler.exit ();
}