CTAOS v5

SysCore/video/color/color.c

@@ -0,0 +1,165 @@
+#include <color.h>
+#include <stdlib.h>
+
+RGBColor RGBColors_4bpp[] = {{0, 0, 0},      // 00 Black
+                            {0, 0, 127},    // 01 Dark Blue
+                            {0, 127, 0},    // 02 Dark Green
+                            {0, 127, 127},  // 03 Dark Cyan
+                            {127, 0, 0},    // 04 Dark Red
+                            {127, 0, 127},  // 05 Dark Magenta
+                            {127, 127, 0},  // 06 Dark Yellow
+                            {192, 192, 192},// 07 Light Gray
+                            {127, 127, 127},// 08 Dark Gray
+                            {0, 0, 255},    // 09 Blue
+                            {0, 255, 0},    // 10 Green
+                            {0, 255, 255},  // 11 Cyan
+                            {255, 0, 0},    // 12 Red
+                            {255, 0, 255},  // 13 Magenta
+                            {255, 255, 0},  // 14 Yellow
+                            {255, 255, 255} // 15 White
+};
+
+
+RGBColor Convert_1bpp_to_RGB(Color_1Bpp c)
+{
+    unsigned char t = (c) ? 0xFF : 0x00;
+    RGBColor temp = {t, t, t};
+    return temp;
+}
+
+RGBColor Convert_4bpp_to_RGB(Color_4Bpp c)
+{
+    return RGBColors_4bpp[c];
+}
+
+RGBColor Convert_6bpp_to_RGB(Color_6Bpp c)
+{
+    unsigned char R, G, B;
+    R = (unsigned char) ((unsigned)((c & 0x30)>>4) * 255 / 3 );
+    G = (unsigned char) ((unsigned)((c & 0x0C)>>2) * 255 / 3 );
+    B = (unsigned char) ((unsigned) (c & 0x03) * 255 / 3 );
+    RGBColor ret = {R, G, B};
+    return ret;
+}
+
+RGBColor Convert_8bpp_to_RGB(Color_8Bpp c)
+{
+    unsigned char R, G, B;
+    R = (unsigned char) ((unsigned)((c & 0xE0)>>5) * 255 / 7 );
+    G = (unsigned char) ((unsigned)((c & 0x1C)>>2) * 255 / 7 );
+    B = (unsigned char) ((unsigned) (c & 0x03) * 255 / 3 );
+    RGBColor ret = {R, G, B};
+    return ret;
+}
+
+RGBColor Convert_15bpp_to_RGB(Color_15Bpp c)
+{
+    unsigned char R, G, B;
+    R = (unsigned char) ((unsigned)((c & 0x7C00)>>10) * 255 / 31 );
+    G = (unsigned char) ((unsigned)((c & 0x03E0)>>5) * 255 / 31 );
+    B = (unsigned char) ((unsigned) (c & 0x001F) * 255 / 31 );
+    RGBColor ret = {R, G, B};
+    return ret;
+}
+
+RGBColor Convert_16bpp_to_RGB(Color_16Bpp c)
+{
+    unsigned char R, G, B;
+    R = (unsigned char) ((unsigned)((c & 0xF800)>>11) * 255 / 31 );
+    G = (unsigned char) ((unsigned)((c & 0x07E0)>>5) * 255 / 63 );
+    B = (unsigned char) ((unsigned) (c & 0x001F) * 255 / 31 );
+    RGBColor ret = {R, G, B};
+    return ret;
+}
+
+RGBColor Convert_18bpp_to_RGB(Color_18Bpp c)
+{
+    unsigned char R, G, B;
+    R = (unsigned char) ((unsigned)(c.R) * 255 / 0x3F );
+    G = (unsigned char) ((unsigned)(c.G) * 255 / 0x3F);
+    B = (unsigned char) ((unsigned)(c.B) * 255 / 0x3F);
+    RGBColor ret = {R, G, B};
+    return ret;
+}
+
+RGBColor Convert_24bpp_to_RGB(Color_24Bpp c)
+{
+    return c;
+}
+
+
+Color_1Bpp Convert_RGB_to_1bpp(RGBColor c)
+{
+    if (((unsigned)c.R + (unsigned)c.G + (unsigned)c.B) / 3 >= 128) return 1;
+    return 0;
+}
+
+Color_4Bpp Convert_RGB_to_4bpp(RGBColor c)
+{
+    int i; int minim = 0xFFFF; int index = 0;
+    int R, G, B;
+
+    for (i = 0; i < 16; i++)
+    {
+        R = (int)(c.R) - (int)(RGBColors_4bpp[i].R);
+        G = (int)(c.G) - (int)(RGBColors_4bpp[i].G);
+        B = (int)(c.B) - (int)(RGBColors_4bpp[i].B);
+
+        R = abs(R) + abs(G) + abs(B);
+        if (R <= minim) {
+            minim = R; index = i;
+        }
+    }
+
+    return index;
+}
+
+Color_6Bpp Convert_RGB_to_6bpp(RGBColor c)
+{
+    Color_6Bpp temp = 0; unsigned tmp;
+    tmp = (unsigned)(c.R) * 3 / 255; temp |= (tmp & 0x03) << 4;
+    tmp = (unsigned)(c.G) * 3 / 255; temp |= (tmp & 0x03) << 2;
+    tmp = (unsigned)(c.B) * 3 / 255; temp |= (tmp & 0x03);
+    return temp;
+}
+
+Color_8Bpp Convert_RGB_to_8bpp(RGBColor c)
+{
+    Color_8Bpp temp = 0; unsigned tmp;
+    tmp = (unsigned)(c.R) * 7 / 255; temp |= (tmp & 0x07) << 5;
+    tmp = (unsigned)(c.G) * 7 / 255; temp |= (tmp & 0x07) << 2;
+    tmp = (unsigned)(c.B) * 3 / 255; temp |= (tmp & 0x03);
+    return temp;
+}
+
+Color_15Bpp Convert_RGB_to_15bpp(RGBColor c)
+{
+    Color_15Bpp temp = 0; unsigned tmp;
+    tmp = (unsigned)(c.R) * 0x1F / 255; temp |= (tmp & 0x1F) << 10;
+    tmp = (unsigned)(c.G) * 0x1F / 255; temp |= (tmp & 0x1F) << 5;
+    tmp = (unsigned)(c.B) * 0x1F / 255; temp |= (tmp & 0x1F);
+    return temp;
+}
+
+Color_16Bpp Convert_RGB_to_16bpp(RGBColor c)
+{
+    Color_16Bpp temp = 0; unsigned tmp;
+    tmp = (unsigned)(c.R) * 0x1F / 255; temp |= (tmp & 0x1F) << 11;
+    tmp = (unsigned)(c.G) * 0x3F / 255; temp |= (tmp & 0x3F) << 5;
+    tmp = (unsigned)(c.B) * 0x1F / 255; temp |= (tmp & 0x1F);
+    return temp;
+}
+
+Color_18Bpp Convert_RGB_to_18bpp(RGBColor c)
+{
+    Color_18Bpp temp; unsigned tmp;
+    tmp = (unsigned)(c.R) * 0x3F / 255; temp.R = (unsigned char)tmp;
+    tmp = (unsigned)(c.G) * 0x3F / 255; temp.G = (unsigned char)tmp;
+    tmp = (unsigned)(c.B) * 0x3F / 255; temp.B = (unsigned char)tmp;
+    return temp;
+}
+
+Color_24Bpp Convert_RGB_to_24bpp(RGBColor c)
+{
+    return c;
+}

SysCore/video/color/color.h

@@ -0,0 +1,66 @@
+#ifndef __COLOR__H__
+#define __COLOR__H__
+
+/**RGB color structure.*/
+typedef struct {
+    unsigned char R,G,B;
+} RGBColor;
+
+/**\Monochrome (black and white)*/
+typedef bool            Color_1Bpp;
+
+/**CGA 2 bits per pixel indexed color.\n\n\Notes: Cannot be converted to/from RGB.*/
+typedef unsigned char   Color_2Bpp;
+
+/**16 color VGA.
+ * \n\n\Format: Uses 1-1-1 bit format, highest bit is intensity.
+ * \n\n\Notes: Unused bits are ignored (should be 0).*/
+typedef unsigned char   Color_4Bpp;
+
+/**64 color EGA.
+ * \n\n\Format: Uses 2-2-2 bit format.
+ * \n\n\Notes: High 2 bits are ignored (should be 0).*/
+typedef unsigned char   Color_6Bpp;
+
+/**256 color VGA.
+ * \n\n\Format: Uses 3-3-2 bit format
+ * \n\n\Notes: The palette must be changed before usable.*/
+typedef unsigned char   Color_8Bpp;
+
+/**SVGA Highcolor palette.
+ * \n\n\Format: Uses 5-5-5 bit format.
+ * \n\n\Notes: Unused high bit is ignored (should be 0).*/
+typedef unsigned short  Color_15Bpp;
+
+/**SVGA Highcolor palette.
+ * \n\n\Format: Uses 5-6-5 bit format.*/
+typedef unsigned short  Color_16Bpp;
+
+/**VGA 18-bit RGB
+ * \n\n\Format: Uses the RGBColor structure, with the R, G and B components.
+ * \n\n\Notes: High 2 bits of each component are ignored, should be 0.*/
+typedef RGBColor        Color_18Bpp;
+
+/**24-bit Truecolor
+ * \n\n\Format: Uses the RGBColor structure, with the R, G and B components.*/
+typedef RGBColor        Color_24Bpp;
+
+/**Few functions to convert values from one format to another.*/
+extern RGBColor Convert_1bpp_to_RGB(Color_1Bpp c);
+extern RGBColor Convert_4bpp_to_RGB(Color_4Bpp c);
+extern RGBColor Convert_6bpp_to_RGB(Color_6Bpp c);
+extern RGBColor Convert_8bpp_to_RGB(Color_8Bpp c);
+extern RGBColor Convert_15bpp_to_RGB(Color_15Bpp c);
+extern RGBColor Convert_16bpp_to_RGB(Color_16Bpp c);
+extern RGBColor Convert_18bpp_to_RGB(Color_18Bpp c);
+extern RGBColor Convert_24bpp_to_RGB(Color_24Bpp c);
+extern Color_1Bpp Convert_RGB_to_1bpp(RGBColor c);
+extern Color_4Bpp Convert_RGB_to_4bpp(RGBColor c);
+extern Color_6Bpp Convert_RGB_to_6bpp(RGBColor c);
+extern Color_8Bpp Convert_RGB_to_8bpp(RGBColor c);
+extern Color_15Bpp Convert_RGB_to_15bpp(RGBColor c);
+extern Color_16Bpp Convert_RGB_to_16bpp(RGBColor c);
+extern Color_18Bpp Convert_RGB_to_18bpp(RGBColor c);
+extern Color_24Bpp Convert_RGB_to_24bpp(RGBColor c);
+
+#endif

SysCore/video/compile.bat

@@ -0,0 +1,26 @@
+@echo off
+
+rem NASM and DJGPP executable paths:
+set nasm_path=C:\nasm
+set djgpp_path=C:\DJGPP\bin
+set objpath=..\objects
+set incpath=../include
+
+@echo Building Video Drivers...
+
+del %objpath%\video\vga03h.o
+
+goto build
+:error
+      @echo.
+      @echo There have been build errors. Building halted.
+      @pause
+      exit
+
+:build
+      @echo       * Compiling Text Mode 0x03 video driver ...
+      %djgpp_path%\gcc.exe -Wall -O -fstrength-reduce -fomit-frame-pointer -nostdinc -fno-builtin -I%incpath% -c -o %objpath%/video/vga03h.o vga03h.c
+
+
+:check
+      if not exist %objpath%\video\vga03h.o goto error

SysCore/video/vga.h

@@ -0,0 +1,37 @@
+#ifndef __VGA__H__
+#define __VGA__H__
+
+typedef struct {
+    enum MODE_TYPES {
+        TextMode = 0,
+        GraphicsMode = 1
+    };
+    /**Defines the mode returned by BIOS int 0x10, ah = 0xF*/
+    unsigned char Mode;
+    /**Text mode or Graphic mode (defined in MODE_TYPES enumeration)*/
+    unsigned char ModeType;
+
+    /**Screen size (characters in text modes, pixels in graphic modes)*/
+    unsigned Width, Height;
+
+    /**Bits per pixel*/
+    unsigned bpp;
+
+    /**Pointer to a function that sets the cursor position*/
+    void (*SetCursor) (int wherex, int wherey);
+    /**Pointer to a function that prints an ascii character in a specified position*/
+    void (*PutChar) (int wherex, int wherey, unsigned char character);
+    /**Pointer to a function that returns the ascii character in the specified position*/
+    unsigned char (*GetChar) (int wherex, int wherey);
+
+    /**Pointer to a function which plots a pixel on the screen. Should be set NULL in text modes.
+     \nColor is a void pointer, to ensure compatibility with different colors.*/
+    void (*PutPixel) (int wherex, int wherey, void* color);
+
+    /**Pointer to a function which returns the color of a pixel on the screen. Should be set NULL in text modes.
+     \nReturn is a void pointer, to ensure compatibility with different colors.*/
+    void* (*GetPixel) (int wherex, int wherey);
+    
+} VideoMode;
+
+#endif

SysCore/video/vga03h.c

@@ -0,0 +1,30 @@
+//#include "vga.h"
+#include <conio.h>
+#include <system.h>
+
+unsigned char* TextVideoRam = (unsigned char*)0xB8000;
+
+void vga03h_cursor(int x, int y)
+{
+      unsigned temp = y*80 + x;
+
+      outportb (0x3D4, 14);
+      outportb (0x3D5, temp >> 8);
+      outportb (0x3D4, 15);
+      outportb (0x3D5, temp);
+}
+
+void           vga03h_putc     (int x, int y, unsigned char c)  { TextVideoRam[2*(y*80+x)] = c;    }
+unsigned char  vga03h_getc     (int x, int y)                   { return TextVideoRam[2*(y*80+x)]; }
+void           vga03h_putcolor (int x, int y, unsigned char c)  { TextVideoRam[2*(y*80+x)+1] = c;  }
+unsigned char  vga03h_getcolor (int x, int y)                   { return TextVideoRam[2*(y*80+x)+1]; }
+
+void vga03h_install()
+{
+      ConsoleScreen screen = {
+            80, 25, 0x07, vga03h_cursor, vga03h_putc, vga03h_getc,
+            vga03h_putcolor, vga03h_getcolor};
+            
+      ConsoleInstall (screen);
+      clrscr();
+}

SysCore/video/vga03h.h

@@ -0,0 +1,7 @@
+#ifndef __DEFAULT__TEXT__MODE__H__
+#define __DEFAULT__TEXT__MODE__H__
+
+void vga03h_install();
+
+
+#endif