2 * Acess2 Virtual Terminal Driver
7 #include <tpl_drv_video.h>
8 #include <tpl_drv_keyboard.h>
9 #include <tpl_drv_terminal.h>
13 #define VERSION ((0<<8)|(50))
16 #define MAX_INPUT_CHARS32 64
17 #define MAX_INPUT_CHARS8 (MAX_INPUT_CHARS32*4)
18 #define VT_SCROLLBACK 1 // 2 Screens of text
19 #define DEFAULT_OUTPUT "VGA"
20 //#define DEFAULT_OUTPUT "BochsGA"
21 #define DEFAULT_INPUT "PS2Keyboard"
22 #define DEFAULT_WIDTH 80
23 #define DEFAULT_HEIGHT 25
24 #define DEFAULT_COLOUR (VT_COL_BLACK|(0xAAA<<16))
26 #define VT_FLAG_HIDECSR 0x01
29 VT_INMODE_TEXT8, // UTF-8 Text Mode (VT100 Emulation)
30 VT_INMODE_TEXT32, // UTF-32 Text Mode (Acess Native)
36 int Mode; //!< Current Mode (see ::eTplTerminal_Modes)
37 int Flags; //!< Flags (see VT_FLAG_*)
38 short Width; //!< Virtual Width
39 short Height; //!< Virtual Height
40 short RealWidth; //!< Real Width
41 short RealHeight; //!< Real Height
43 int ViewPos; //!< View Buffer Offset (Text Only)
44 int WritePos; //!< Write Buffer Offset (Text Only)
45 Uint32 CurColour; //!< Current Text Colour
46 char Name[2]; //!< Name of the terminal
48 int InputRead; //!< Input buffer read position
49 int InputWrite; //!< Input buffer write position
50 char InputBuffer[MAX_INPUT_CHARS8];
59 int VT_Install(char **Arguments);
60 char *VT_ReadDir(tVFS_Node *Node, int Pos);
61 tVFS_Node *VT_FindDir(tVFS_Node *Node, char *Name);
62 int VT_Root_IOCtl(tVFS_Node *Node, int Id, void *Data);
63 Uint64 VT_Read(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer);
64 Uint64 VT_Write(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer);
65 int VT_Terminal_IOCtl(tVFS_Node *Node, int Id, void *Data);
66 void VT_SetTerminal(int ID);
67 void VT_KBCallBack(Uint32 Codepoint);
68 void VT_int_PutString(tVTerm *Term, Uint8 *Buffer, Uint Count);
69 int VT_int_ParseEscape(tVTerm *Term, char *Buffer);
70 void VT_int_PutChar(tVTerm *Term, Uint32 Ch);
71 void VT_int_UpdateScreen( tVTerm *Term, int UpdateAll );
72 void VT_int_ChangeMode(tVTerm *Term, int NewMode);
75 const Uint16 caVT100Colours[] = {
76 VT_COL_BLACK, 0x700, 0x070, 0x770, 0x007, 0x707, 0x077, 0xAAA,
77 VT_COL_GREY, 0xF00, 0x0F0, 0xFF0, 0x00F, 0xF0F, 0x0FF, VT_COL_WHITE
81 MODULE_DEFINE(0, VERSION, VTerm, VT_Install, NULL, DEFAULT_OUTPUT, DEFAULT_INPUT, NULL);
82 tDevFS_Driver gVT_DrvInfo = {
85 .Flags = VFS_FFLAG_DIRECTORY,
89 .ReadDir = VT_ReadDir,
90 .FindDir = VT_FindDir,
91 .IOCtl = VT_Root_IOCtl
95 tVTerm gVT_Terminals[NUM_VTS];
96 int giVT_CurrentTerminal = 0;
97 // --- Driver Handles ---
98 char *gsVT_OutputDevice = NULL;
99 char *gsVT_InputDevice = NULL;
100 int giVT_OutputDevHandle = -2;
101 int giVT_InputDevHandle = -2;
102 // --- Key States --- (Used for VT Switching/Magic Combos)
103 int gbVT_CtrlDown = 0;
104 int gbVT_AltDown = 0;
105 int gbVT_SysrqDown = 0;
109 * \fn int VT_Install(char **Arguments)
110 * \brief Installs the Virtual Terminal Driver
112 int VT_Install(char **Arguments)
114 char **args = Arguments;
121 for( ; (arg = *args); args++ )
123 if(arg[0] != '-') continue;
129 if(args[1] == NULL) break;
130 if(gsVT_OutputDevice) free(gsVT_OutputDevice);
131 gsVT_OutputDevice = malloc(strlen(args[1])+1);
132 strcpy(gsVT_OutputDevice, args[1]);
138 if(args[1] == NULL) break;
139 if(gsVT_InputDevice) free(gsVT_InputDevice);
140 gsVT_InputDevice = malloc(strlen(args[1])+1);
141 strcpy(gsVT_InputDevice, args[1]);
150 if(!gsVT_OutputDevice) gsVT_OutputDevice = "/Devices/"DEFAULT_OUTPUT;
151 if(!gsVT_InputDevice) gsVT_InputDevice = "/Devices/"DEFAULT_INPUT;
153 LOG("Using '%s' as output", gsVT_OutputDevice);
154 LOG("Using '%s' as input", gsVT_InputDevice);
157 for( i = 0; i < NUM_VTS; i++ )
159 gVT_Terminals[i].Mode = TERM_MODE_TEXT;
160 gVT_Terminals[i].Flags = 0;
161 gVT_Terminals[i].Width = DEFAULT_WIDTH;
162 gVT_Terminals[i].Height = DEFAULT_HEIGHT;
163 gVT_Terminals[i].CurColour = DEFAULT_COLOUR;
164 gVT_Terminals[i].WritePos = 0;
165 gVT_Terminals[i].ViewPos = 0;
167 gVT_Terminals[i].Buffer = calloc( DEFAULT_WIDTH*DEFAULT_HEIGHT*VT_SCROLLBACK, sizeof(tVT_Char) );
169 gVT_Terminals[i].Name[0] = '0'+i;
170 gVT_Terminals[i].Name[1] = '\0';
171 gVT_Terminals[i].Node.Inode = i;
172 gVT_Terminals[i].Node.ImplPtr = &gVT_Terminals[i];
173 gVT_Terminals[i].Node.NumACLs = 0; // Only root can open virtual terminals
175 gVT_Terminals[i].Node.Read = VT_Read;
176 gVT_Terminals[i].Node.Write = VT_Write;
177 gVT_Terminals[i].Node.IOCtl = VT_Terminal_IOCtl;
181 DevFS_AddDevice( &gVT_DrvInfo );
187 * \fn void VT_InitOutput()
188 * \brief Initialise Video Output
192 giVT_OutputDevHandle = VFS_Open(gsVT_OutputDevice, VFS_OPENFLAG_WRITE);
193 LOG("giVT_OutputDevHandle = %x\n", giVT_OutputDevHandle);
198 * \fn void VT_InitInput()
199 * \brief Initialises the input
203 giVT_InputDevHandle = VFS_Open(gsVT_InputDevice, VFS_OPENFLAG_READ);
204 LOG("giVT_InputDevHandle = %x\n", giVT_InputDevHandle);
205 if(giVT_InputDevHandle == -1) return ;
206 VFS_IOCtl(giVT_InputDevHandle, KB_IOCTL_SETCALLBACK, VT_KBCallBack);
210 * \fn char *VT_ReadDir(tVFS_Node *Node, int Pos)
211 * \brief Read from the VTerm Directory
213 char *VT_ReadDir(tVFS_Node *Node, int Pos)
215 if(Pos < 0) return NULL;
216 if(Pos >= NUM_VTS) return NULL;
217 return strdup( gVT_Terminals[Pos].Name );
221 * \fn tVFS_Node *VT_FindDir(tVFS_Node *Node, char *Name)
222 * \brief Find an item in the VTerm directory
224 tVFS_Node *VT_FindDir(tVFS_Node *Node, char *Name)
228 //ENTER("pNode sName", Node, Name);
230 // Open the input and output files if needed
231 if(giVT_OutputDevHandle == -2) VT_InitOutput();
232 if(giVT_InputDevHandle == -2) VT_InitInput();
235 if(Name[0] < '0' || Name[0] > '9' || Name[1] != '\0') {
246 //LEAVE('p', &gVT_Terminals[num].Node);
247 return &gVT_Terminals[num].Node;
251 * \fn int VT_Root_IOCtl(tVFS_Node *Node, int Id, void *Data)
252 * \brief Control the VTerm Driver
254 int VT_Root_IOCtl(tVFS_Node *Node, int Id, void *Data)
259 case DRV_IOCTL_TYPE: return DRV_TYPE_MISC;
260 case DRV_IOCTL_IDENT: memcpy(Data, "VT\0\0", 4); return 0;
261 case DRV_IOCTL_VERSION: return VERSION;
262 case DRV_IOCTL_LOOKUP: return 0;
264 case 4: // Get Video Driver
265 if(Data) strcpy(Data, gsVT_OutputDevice);
266 return strlen(gsVT_OutputDevice);
268 case 5: // Set Video Driver
269 if(!Data) return -EINVAL;
270 if(Threads_GetUID() != 0) return -EACCES;
274 free(gsVT_OutputDevice);
276 gsVT_OutputDevice = malloc(len+1);
277 strcpy(gsVT_OutputDevice, Data);
279 VFS_Close(giVT_OutputDevHandle);
280 giVT_OutputDevHandle = -1;
289 * \fn Uint64 VT_Read(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
290 * \brief Read from a virtual terminal
292 Uint64 VT_Read(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
295 tVTerm *term = &gVT_Terminals[ Node->Inode ];
297 // Check current mode
303 while(term->InputRead == term->InputWrite) Threads_Yield();
305 ((char*)Buffer)[pos] = term->InputBuffer[term->InputRead];
308 term->InputRead %= MAX_INPUT_CHARS8;
313 case TERM_MODE_OPENGL:
316 while(term->InputRead == term->InputWrite) Threads_Yield();
317 ((Uint32*)Buffer)[pos] = ((Uint32*)term->InputBuffer)[term->InputRead];
320 term->InputRead %= MAX_INPUT_CHARS32;
328 * \fn Uint64 VT_Write(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
329 * \brief Write to a virtual terminal
331 Uint64 VT_Write(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
333 tVTerm *term = &gVT_Terminals[ Node->Inode ];
335 //ENTER("pNode XOffset XLength pBuffer", Node, Offset, Length, Buffer);
341 VT_int_PutString(term, Buffer, Length);
350 * \fn int VT_Terminal_IOCtl(tVFS_Node *Node, int Id, void *Data)
351 * \brief Call an IO Control on a virtual terminal
353 int VT_Terminal_IOCtl(tVFS_Node *Node, int Id, void *Data)
356 tVTerm *term = Node->ImplPtr;
359 case DRV_IOCTL_TYPE: return DRV_TYPE_TERMINAL;
360 case DRV_IOCTL_IDENT: memcpy(Data, "VT\0\0", 4); return 0;
361 case DRV_IOCTL_VERSION: return VERSION;
362 case DRV_IOCTL_LOOKUP: return 0;
364 // Get/Set the mode (and apply any changes)
365 case TERM_IOCTL_MODETYPE:
366 if(Data == NULL) return term->Mode;
368 if(term->Mode != *iData) {
369 VT_int_ChangeMode(term, *iData);
372 // Update the screen dimensions
373 if(giVT_CurrentTerminal == Node->Inode)
374 VT_SetTerminal( giVT_CurrentTerminal );
377 // Get/set the terminal width
378 case TERM_IOCTL_WIDTH:
379 if(Data == NULL) return term->Width;
380 term->Width = *iData;
383 // Get/set the terminal height
384 case TERM_IOCTL_HEIGHT:
385 if(Data == NULL) return term->Height;
386 term->Height = *iData;
396 * \fn void VT_SetTerminal(int ID)
397 * \brief Set the current terminal
399 void VT_SetTerminal(int ID)
401 tVideo_IOCtl_Mode mode = {0};
404 // Create the video mode
405 mode.width = gVT_Terminals[ ID ].Width;
406 mode.height = gVT_Terminals[ ID ].Height;
408 if(gVT_Terminals[ ID ].Mode == TERM_MODE_TEXT) {
410 mode.flags = VIDEO_FLAG_TEXT;
412 // - Framebuffer or 3D
419 VFS_IOCtl( giVT_OutputDevHandle, VIDEO_IOCTL_FINDMODE, &mode );
421 gVT_Terminals[ ID ].RealWidth = mode.width;
422 gVT_Terminals[ ID ].RealHeight = mode.height;
423 VFS_IOCtl( giVT_OutputDevHandle, VIDEO_IOCTL_SETMODE, &modeNum );
425 // Update current terminal ID
426 Log("Changed terminal from %i to %i", giVT_CurrentTerminal, ID);
427 giVT_CurrentTerminal = ID;
430 VT_int_UpdateScreen( &gVT_Terminals[ ID ], 1 );
434 * \fn void VT_KBCallBack(Uint32 Codepoint)
435 * \brief Called on keyboard interrupt
437 void VT_KBCallBack(Uint32 Codepoint)
439 tVTerm *term = &gVT_Terminals[giVT_CurrentTerminal];
441 // How the hell did we get a Codepoint of zero?
442 if(Codepoint == 0) return;
445 if( Codepoint & 0x80000000 )
447 Codepoint &= 0x7FFFFFFF;
474 if(!gbVT_AltDown || !gbVT_CtrlDown)
478 case KEY_F1: VT_SetTerminal(0); return;
479 case KEY_F2: VT_SetTerminal(1); return;
480 case KEY_F3: VT_SetTerminal(2); return;
481 case KEY_F4: VT_SetTerminal(3); return;
482 case KEY_F5: VT_SetTerminal(4); return;
483 case KEY_F6: VT_SetTerminal(5); return;
484 case KEY_F7: VT_SetTerminal(6); return;
485 case KEY_F8: VT_SetTerminal(7); return;
486 case KEY_F9: VT_SetTerminal(8); return;
487 case KEY_F10: VT_SetTerminal(9); return;
488 case KEY_F11: VT_SetTerminal(10); return;
489 case KEY_F12: VT_SetTerminal(11); return;
494 if(term->Mode == TERM_MODE_TEXT)
499 // Ignore Modifer Keys
500 if(Codepoint > KEY_MODIFIERS) return;
502 // Get UTF-8/ANSI Encoding
506 buf[0] = '\x1B'; buf[1] = '[';
507 buf[2] = 'D'; len = 3;
510 buf[0] = '\x1B'; buf[1] = '[';
511 buf[2] = 'C'; len = 3;
514 len = WriteUTF8( buf, Codepoint );
515 //Log("Codepoint = 0x%x", Codepoint);
519 //Log("len = %i, buf = %s", len, buf);
522 if( MAX_INPUT_CHARS8 - term->InputWrite >= len )
523 memcpy( &term->InputBuffer[term->InputWrite], buf, len );
525 memcpy( &term->InputBuffer[term->InputWrite], buf, MAX_INPUT_CHARS8 - term->InputWrite );
526 memcpy( &term->InputBuffer[0], buf, len - (MAX_INPUT_CHARS8 - term->InputWrite) );
528 // Roll the buffer over
529 term->InputWrite += len;
530 term->InputWrite %= MAX_INPUT_CHARS8;
531 if( (term->InputWrite - term->InputRead + MAX_INPUT_CHARS8)%MAX_INPUT_CHARS8 < len ) {
532 term->InputRead = term->InputWrite + 1;
533 term->InputRead %= MAX_INPUT_CHARS8;
539 // Encode the raw UTF-32 Key
540 ((Uint32*)term->InputBuffer)[ term->InputWrite ] = Codepoint;
542 term->InputWrite %= MAX_INPUT_CHARS32;
543 if(term->InputRead == term->InputWrite) {
545 term->InputRead %= MAX_INPUT_CHARS32;
551 * \fn void VT_int_PutString(tVTerm *Term, Uint8 *Buffer, Uint Count)
552 * \brief Print a string to the Virtual Terminal
554 void VT_int_PutString(tVTerm *Term, Uint8 *Buffer, Uint Count)
558 for( i = 0; i < Count; i++ )
560 if( Buffer[i] == 0x1B ) // Escape Sequence
563 i += VT_int_ParseEscape(Term, (char*)&Buffer[i]);
567 if( Buffer[i] < 128 ) // Plain ASCII
568 VT_int_PutChar(Term, Buffer[i]);
570 i += ReadUTF8(&Buffer[i], &val);
571 VT_int_PutChar(Term, val);
576 if( !(Term->Flags & VT_FLAG_HIDECSR) )
578 tVideo_IOCtl_Pos pos;
579 pos.x = Term->WritePos % Term->Width;
580 pos.y = Term->WritePos / Term->Width;
581 VFS_IOCtl(giVT_OutputDevHandle, VIDEO_IOCTL_SETCURSOR, &pos);
586 * \fn void VT_int_ClearLine(tVTerm *Term, int Num)
587 * \brief Clears a line in a virtual terminal
589 void VT_int_ClearLine(tVTerm *Term, int Num)
592 //ENTER("pTerm iNum", Term, Num);
593 for( i = Term->Width; i--; )
595 Term->Text[ Num*Term->Width + i ].Ch = 0;
596 Term->Text[ Num*Term->Width + i ].Colour = Term->CurColour;
602 * \fn int VT_int_ParseEscape(tVTerm *Term, char *Buffer)
603 * \brief Parses a VT100 Escape code
605 int VT_int_ParseEscape(tVTerm *Term, char *Buffer)
610 int args[4] = {0,0,0,0};
618 while('0' <= c && c <= '9') {
623 if( j != 1 ) argc ++;
626 // Get string (what does this do?)
634 if( ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z'))
640 if(argc == 1) tmp = args[0];
643 if( Term->WritePos-(tmp-1) % Term->Width == 0 )
644 Term->WritePos -= Term->WritePos % Term->Width;
646 Term->WritePos -= tmp;
651 if(argc == 1) tmp = args[0];
653 if( (Term->WritePos + tmp) % Term->Width == 0 ) {
654 Term->WritePos -= Term->WritePos % Term->Width;
655 Term->WritePos += Term->Width - 1;
657 Term->WritePos += tmp;
667 int i = Term->Height * VT_SCROLLBACK;
668 while( i-- ) VT_int_ClearLine(Term, i);
671 VT_int_UpdateScreen(Term, 1);
681 if( 0 <= args[argc] && args[argc] <= 8)
685 case 0: Term->CurColour = DEFAULT_COLOUR; break; // Reset
686 case 1: Term->CurColour |= 0x80000000; break; // Bright
687 case 2: Term->CurColour &= ~0x80000000; break; // Dim
691 else if(30 <= args[argc] && args[argc] <= 37) {
692 Term->CurColour &= 0xF000FFFF;
693 Term->CurColour |= (Uint32)caVT100Colours[ args[argc]-30+(Term->CurColour>>28) ] << 16;
696 else if(40 <= args[argc] && args[argc] <= 47) {
697 Term->CurColour &= 0xFFFF8000;
698 Term->CurColour |= caVT100Colours[ args[argc]-40+((Term->CurColour>>12)&15) ];
714 * \fn void VT_int_PutChar(tVTerm *Term, Uint32 Ch)
715 * \brief Write a single character to a VTerm
717 void VT_int_PutChar(tVTerm *Term, Uint32 Ch)
720 //ENTER("pTerm xCh", Term, Ch);
721 //LOG("Term = {WritePos:%i, ViewPos:%i}\n", Term->WritePos, Term->ViewPos);
725 case '\0': return; // Ignore NULL byte
727 Term->WritePos += Term->Width;
729 Term->WritePos -= Term->WritePos % Term->Width;
734 Term->Text[ Term->WritePos ].Ch = '\0';
735 Term->Text[ Term->WritePos ].Colour = Term->CurColour;
737 } while(Term->WritePos & 7);
741 // Backspace is invalid at Offset 0
742 if(Term->WritePos == 0) break;
746 if(Term->Text[ Term->WritePos ].Ch != '\0') {
747 Term->Text[ Term->WritePos ].Ch = 0;
748 Term->Text[ Term->WritePos ].Colour = Term->CurColour;
752 i = 7; // Limit it to 8
754 Term->Text[ Term->WritePos ].Ch = 0;
755 Term->Text[ Term->WritePos ].Colour = Term->CurColour;
757 } while(Term->WritePos && i-- && Term->Text[ Term->WritePos ].Ch == '\0');
758 if(Term->Text[ Term->WritePos ].Ch != '\0')
763 Term->Text[ Term->WritePos ].Ch = Ch;
764 Term->Text[ Term->WritePos ].Colour = Term->CurColour;
771 if(Term->WritePos >= Term->Width*Term->Height*VT_SCROLLBACK)
774 Term->WritePos -= Term->Width;
776 // Update view position
777 base = Term->Width*Term->Height*(VT_SCROLLBACK-1);
778 if(Term->ViewPos < base) Term->ViewPos += Term->Width;
779 if(Term->ViewPos > base) Term->ViewPos = base;
781 // Scroll terminal cache
782 base = Term->Width*(Term->Height*VT_SCROLLBACK-1);
787 &Term->Text[Term->Width],
788 Term->Width*(Term->Height-1)*VT_SCROLLBACK*sizeof(tVT_Char)
792 for( i = 0; i < Term->Width; i ++ )
794 Term->Text[ base + i ].Ch = 0;
795 Term->Text[ base + i ].Colour = Term->CurColour;
798 VT_int_UpdateScreen( Term, 1 );
800 else if(Term->WritePos > Term->Width*Term->Height+Term->ViewPos)
802 Term->ViewPos += Term->Width;
803 VT_int_UpdateScreen( Term, 1 );
806 VT_int_UpdateScreen( Term, 0 );
812 * \fn void VT_int_UpdateScreen( tVTerm *Term, int UpdateAll )
813 * \brief Updates the video framebuffer
815 void VT_int_UpdateScreen( tVTerm *Term, int UpdateAll )
817 // Only update if this is the current terminal
818 if( Term != &gVT_Terminals[giVT_CurrentTerminal] ) return;
820 if( Term->Mode == TERM_MODE_TEXT )
824 giVT_OutputDevHandle,
826 Term->Width*Term->Height*sizeof(tVT_Char),
827 &Term->Text[Term->ViewPos]
830 int pos = Term->WritePos - Term->WritePos % Term->Width;
832 giVT_OutputDevHandle,
833 (pos - Term->ViewPos)*sizeof(tVT_Char),
834 Term->Width*sizeof(tVT_Char),
842 giVT_OutputDevHandle,
844 Term->Width*Term->Height*sizeof(Uint32),
851 * \fn void VT_int_ChangeMode(tVTerm *Term, int NewMode)
852 * \brief Change the mode of a VTerm
854 void VT_int_ChangeMode(tVTerm *Term, int NewMode)
860 Term->Text = calloc( Term->Width*Term->Height*VT_SCROLLBACK, sizeof(tVT_Char) );
864 Term->Buffer = calloc( Term->Width*Term->Height, sizeof(Uint32) );
866 case TERM_MODE_OPENGL:
870 Term->Mode = NewMode;
876 #define MONOSPACE_FONT 10816
878 #if MONOSPACE_FONT == 10808 // 8x8
879 # include "vterm_font_8x8.h"
880 #elif MONOSPACE_FONT == 10816 // 8x16
881 # include "vterm_font_8x16.h"
884 // === PROTOTYPES ===
885 Uint8 *VT_Font_GetChar(Uint32 Codepoint);
888 int giVT_CharWidth = FONT_WIDTH;
889 int giVT_CharHeight = FONT_HEIGHT;
893 * \fn void VT_Font_Render(Uint32 Codepoint, void *Buffer, int Pitch, Uint32 BGC, Uint32 FGC)
894 * \brief Render a font character
896 void VT_Font_Render(Uint32 Codepoint, void *Buffer, int Pitch, Uint32 BGC, Uint32 FGC)
899 Uint32 *buf = Buffer;
901 font = VT_Font_GetChar(Codepoint);
903 for(y = 0; y < FONT_HEIGHT; y ++)
905 for(x = 0; x < FONT_WIDTH; x ++)
907 if(*font & (1 << (FONT_WIDTH-x)))
918 * \fn Uint32 VT_Colour12to24(Uint16 Col12)
921 Uint32 VT_Colour12to24(Uint16 Col12)
926 ret = (tmp << 0) | (tmp << 4);
927 tmp = (Col12 & 0xF0) >> 4;
928 ret |= (tmp << 8) | (tmp << 12);
929 tmp = (Col12 & 0xF00) >> 8;
930 ret |= (tmp << 16) | (tmp << 20);
935 * \fn Uint8 *VT_Font_GetChar(Uint32 Codepoint)
936 * \brief Gets an index into the font array given a Unicode Codepoint
937 * \note See http://en.wikipedia.org/wiki/CP437
939 Uint8 *VT_Font_GetChar(Uint32 Codepoint)
943 return &VTermFont[Codepoint*FONT_HEIGHT];
946 case 0xC7: index = 128; break; // Ç
947 case 0xFC: index = 129; break; // ü
948 case 0xE9: index = 130; break; // é
949 case 0xE2: index = 131; break; // â
950 case 0xE4: index = 132; break; // ä
951 case 0xE0: index = 133; break; // à
952 case 0xE5: index = 134; break; // å
953 case 0xE7: index = 135; break; // ç
954 case 0xEA: index = 136; break; // ê
955 case 0xEB: index = 137; break; // ë
956 case 0xE8: index = 138; break; // è
957 case 0xEF: index = 139; break; // ï
958 case 0xEE: index = 140; break; // î
959 case 0xEC: index = 141; break; // ì
960 case 0xC4: index = 142; break; // Ä
961 case 0xC5: index = 143; break; // Å
964 return &VTermFont[index*FONT_HEIGHT];
967 EXPORTAS(&giVT_CharWidth, giVT_CharWidth);
968 EXPORTAS(&giVT_CharHeight, giVT_CharHeight);
969 EXPORT(VT_Font_Render);
970 EXPORT(VT_Colour12to24);