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 extern void Debug_SetKTerminal(char *File);
62 int VT_Install(char **Arguments);
63 char *VT_ReadDir(tVFS_Node *Node, int Pos);
64 tVFS_Node *VT_FindDir(tVFS_Node *Node, char *Name);
65 int VT_Root_IOCtl(tVFS_Node *Node, int Id, void *Data);
66 Uint64 VT_Read(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer);
67 Uint64 VT_Write(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer);
68 int VT_Terminal_IOCtl(tVFS_Node *Node, int Id, void *Data);
69 void VT_SetTerminal(int ID);
70 void VT_KBCallBack(Uint32 Codepoint);
71 void VT_int_PutString(tVTerm *Term, Uint8 *Buffer, Uint Count);
72 int VT_int_ParseEscape(tVTerm *Term, char *Buffer);
73 void VT_int_PutChar(tVTerm *Term, Uint32 Ch);
74 void VT_int_UpdateScreen( tVTerm *Term, int UpdateAll );
75 void VT_int_ChangeMode(tVTerm *Term, int NewMode);
78 const Uint16 caVT100Colours[] = {
79 VT_COL_BLACK, 0x700, 0x070, 0x770, 0x007, 0x707, 0x077, 0xAAA,
80 VT_COL_GREY, 0xF00, 0x0F0, 0xFF0, 0x00F, 0xF0F, 0x0FF, VT_COL_WHITE
84 MODULE_DEFINE(0, VERSION, VTerm, VT_Install, NULL, DEFAULT_OUTPUT, DEFAULT_INPUT, NULL);
85 tDevFS_Driver gVT_DrvInfo = {
88 .Flags = VFS_FFLAG_DIRECTORY,
92 .ReadDir = VT_ReadDir,
93 .FindDir = VT_FindDir,
94 .IOCtl = VT_Root_IOCtl
98 tVTerm gVT_Terminals[NUM_VTS];
99 int giVT_CurrentTerminal = 0;
100 // --- Driver Handles ---
101 char *gsVT_OutputDevice = NULL;
102 char *gsVT_InputDevice = NULL;
103 int giVT_OutputDevHandle = -2;
104 int giVT_InputDevHandle = -2;
105 // --- Key States --- (Used for VT Switching/Magic Combos)
106 int gbVT_CtrlDown = 0;
107 int gbVT_AltDown = 0;
108 int gbVT_SysrqDown = 0;
112 * \fn int VT_Install(char **Arguments)
113 * \brief Installs the Virtual Terminal Driver
115 int VT_Install(char **Arguments)
117 char **args = Arguments;
124 for( ; (arg = *args); args++ )
126 if(arg[0] != '-') continue;
132 if(args[1] == NULL) break;
133 if(gsVT_OutputDevice) free(gsVT_OutputDevice);
134 gsVT_OutputDevice = malloc(strlen(args[1])+1);
135 strcpy(gsVT_OutputDevice, args[1]);
141 if(args[1] == NULL) break;
142 if(gsVT_InputDevice) free(gsVT_InputDevice);
143 gsVT_InputDevice = malloc(strlen(args[1])+1);
144 strcpy(gsVT_InputDevice, args[1]);
153 if(!gsVT_OutputDevice) gsVT_OutputDevice = "/Devices/"DEFAULT_OUTPUT;
154 if(!gsVT_InputDevice) gsVT_InputDevice = "/Devices/"DEFAULT_INPUT;
156 LOG("Using '%s' as output", gsVT_OutputDevice);
157 LOG("Using '%s' as input", gsVT_InputDevice);
160 for( i = 0; i < NUM_VTS; i++ )
162 gVT_Terminals[i].Mode = TERM_MODE_TEXT;
163 gVT_Terminals[i].Flags = 0;
164 gVT_Terminals[i].Width = DEFAULT_WIDTH;
165 gVT_Terminals[i].Height = DEFAULT_HEIGHT;
166 gVT_Terminals[i].CurColour = DEFAULT_COLOUR;
167 gVT_Terminals[i].WritePos = 0;
168 gVT_Terminals[i].ViewPos = 0;
170 gVT_Terminals[i].Buffer = calloc( DEFAULT_WIDTH*DEFAULT_HEIGHT*VT_SCROLLBACK, sizeof(tVT_Char) );
172 gVT_Terminals[i].Name[0] = '0'+i;
173 gVT_Terminals[i].Name[1] = '\0';
174 gVT_Terminals[i].Node.Inode = i;
175 gVT_Terminals[i].Node.ImplPtr = &gVT_Terminals[i];
176 gVT_Terminals[i].Node.NumACLs = 0; // Only root can open virtual terminals
178 gVT_Terminals[i].Node.Read = VT_Read;
179 gVT_Terminals[i].Node.Write = VT_Write;
180 gVT_Terminals[i].Node.IOCtl = VT_Terminal_IOCtl;
184 DevFS_AddDevice( &gVT_DrvInfo );
186 // Set kernel output to VT0
187 //Debug_SetKTerminal("/Devices/VTerm/0");
193 * \fn void VT_InitOutput()
194 * \brief Initialise Video Output
198 giVT_OutputDevHandle = VFS_Open(gsVT_OutputDevice, VFS_OPENFLAG_WRITE);
199 LOG("giVT_OutputDevHandle = %x\n", giVT_OutputDevHandle);
204 * \fn void VT_InitInput()
205 * \brief Initialises the input
209 giVT_InputDevHandle = VFS_Open(gsVT_InputDevice, VFS_OPENFLAG_READ);
210 LOG("giVT_InputDevHandle = %x\n", giVT_InputDevHandle);
211 if(giVT_InputDevHandle == -1) return ;
212 VFS_IOCtl(giVT_InputDevHandle, KB_IOCTL_SETCALLBACK, VT_KBCallBack);
216 * \fn char *VT_ReadDir(tVFS_Node *Node, int Pos)
217 * \brief Read from the VTerm Directory
219 char *VT_ReadDir(tVFS_Node *Node, int Pos)
221 if(Pos < 0) return NULL;
222 if(Pos >= NUM_VTS) return NULL;
223 return strdup( gVT_Terminals[Pos].Name );
227 * \fn tVFS_Node *VT_FindDir(tVFS_Node *Node, char *Name)
228 * \brief Find an item in the VTerm directory
230 tVFS_Node *VT_FindDir(tVFS_Node *Node, char *Name)
234 //ENTER("pNode sName", Node, Name);
236 // Open the input and output files if needed
237 if(giVT_OutputDevHandle == -2) VT_InitOutput();
238 if(giVT_InputDevHandle == -2) VT_InitInput();
241 if(Name[0] < '0' || Name[0] > '9' || Name[1] != '\0') {
252 //LEAVE('p', &gVT_Terminals[num].Node);
253 return &gVT_Terminals[num].Node;
257 * \fn int VT_Root_IOCtl(tVFS_Node *Node, int Id, void *Data)
258 * \brief Control the VTerm Driver
260 int VT_Root_IOCtl(tVFS_Node *Node, int Id, void *Data)
265 case DRV_IOCTL_TYPE: return DRV_TYPE_MISC;
266 case DRV_IOCTL_IDENT: memcpy(Data, "VT\0\0", 4); return 0;
267 case DRV_IOCTL_VERSION: return VERSION;
268 case DRV_IOCTL_LOOKUP: return 0;
270 case 4: // Get Video Driver
271 if(Data) strcpy(Data, gsVT_OutputDevice);
272 return strlen(gsVT_OutputDevice);
274 case 5: // Set Video Driver
275 if(!Data) return -EINVAL;
276 if(Threads_GetUID() != 0) return -EACCES;
280 free(gsVT_OutputDevice);
282 gsVT_OutputDevice = malloc(len+1);
283 strcpy(gsVT_OutputDevice, Data);
285 VFS_Close(giVT_OutputDevHandle);
286 giVT_OutputDevHandle = -1;
295 * \fn Uint64 VT_Read(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
296 * \brief Read from a virtual terminal
298 Uint64 VT_Read(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
301 tVTerm *term = &gVT_Terminals[ Node->Inode ];
303 // Check current mode
309 while(term->InputRead == term->InputWrite) Threads_Yield();
311 ((char*)Buffer)[pos] = term->InputBuffer[term->InputRead];
314 term->InputRead %= MAX_INPUT_CHARS8;
319 case TERM_MODE_OPENGL:
322 while(term->InputRead == term->InputWrite) Threads_Yield();
323 ((Uint32*)Buffer)[pos] = ((Uint32*)term->InputBuffer)[term->InputRead];
326 term->InputRead %= MAX_INPUT_CHARS32;
334 * \fn Uint64 VT_Write(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
335 * \brief Write to a virtual terminal
337 Uint64 VT_Write(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
339 tVTerm *term = &gVT_Terminals[ Node->Inode ];
341 //ENTER("pNode XOffset XLength pBuffer", Node, Offset, Length, Buffer);
347 VT_int_PutString(term, Buffer, Length);
356 * \fn int VT_Terminal_IOCtl(tVFS_Node *Node, int Id, void *Data)
357 * \brief Call an IO Control on a virtual terminal
359 int VT_Terminal_IOCtl(tVFS_Node *Node, int Id, void *Data)
362 tVTerm *term = Node->ImplPtr;
365 case DRV_IOCTL_TYPE: return DRV_TYPE_TERMINAL;
366 case DRV_IOCTL_IDENT: memcpy(Data, "VT\0\0", 4); return 0;
367 case DRV_IOCTL_VERSION: return VERSION;
368 case DRV_IOCTL_LOOKUP: return 0;
370 // Get/Set the mode (and apply any changes)
371 case TERM_IOCTL_MODETYPE:
372 if(Data == NULL) return term->Mode;
374 if(term->Mode != *iData) {
375 VT_int_ChangeMode(term, *iData);
378 // Update the screen dimensions
379 if(giVT_CurrentTerminal == Node->Inode)
380 VT_SetTerminal( giVT_CurrentTerminal );
383 // Get/set the terminal width
384 case TERM_IOCTL_WIDTH:
385 if(Data == NULL) return term->Width;
386 term->Width = *iData;
389 // Get/set the terminal height
390 case TERM_IOCTL_HEIGHT:
391 if(Data == NULL) return term->Height;
392 term->Height = *iData;
402 * \fn void VT_SetTerminal(int ID)
403 * \brief Set the current terminal
405 void VT_SetTerminal(int ID)
407 tVideo_IOCtl_Mode mode = {0};
410 // Create the video mode
411 mode.width = gVT_Terminals[ ID ].Width;
412 mode.height = gVT_Terminals[ ID ].Height;
414 if(gVT_Terminals[ ID ].Mode == TERM_MODE_TEXT) {
416 mode.flags = VIDEO_FLAG_TEXT;
418 // - Framebuffer or 3D
425 VFS_IOCtl( giVT_OutputDevHandle, VIDEO_IOCTL_FINDMODE, &mode );
427 gVT_Terminals[ ID ].RealWidth = mode.width;
428 gVT_Terminals[ ID ].RealHeight = mode.height;
429 VFS_IOCtl( giVT_OutputDevHandle, VIDEO_IOCTL_SETMODE, &modeNum );
431 // Update current terminal ID
432 Log("Changed terminal from %i to %i", giVT_CurrentTerminal, ID);
433 giVT_CurrentTerminal = ID;
436 VT_int_UpdateScreen( &gVT_Terminals[ ID ], 1 );
440 * \fn void VT_KBCallBack(Uint32 Codepoint)
441 * \brief Called on keyboard interrupt
443 void VT_KBCallBack(Uint32 Codepoint)
445 tVTerm *term = &gVT_Terminals[giVT_CurrentTerminal];
447 // How the hell did we get a Codepoint of zero?
448 if(Codepoint == 0) return;
451 if( Codepoint & 0x80000000 )
453 Codepoint &= 0x7FFFFFFF;
480 if(!gbVT_AltDown || !gbVT_CtrlDown)
484 case KEY_F1: VT_SetTerminal(0); return;
485 case KEY_F2: VT_SetTerminal(1); return;
486 case KEY_F3: VT_SetTerminal(2); return;
487 case KEY_F4: VT_SetTerminal(3); return;
488 case KEY_F5: VT_SetTerminal(4); return;
489 case KEY_F6: VT_SetTerminal(5); return;
490 case KEY_F7: VT_SetTerminal(6); return;
491 case KEY_F8: VT_SetTerminal(7); return;
492 case KEY_F9: VT_SetTerminal(8); return;
493 case KEY_F10: VT_SetTerminal(9); return;
494 case KEY_F11: VT_SetTerminal(10); return;
495 case KEY_F12: VT_SetTerminal(11); return;
500 if(term->Mode == TERM_MODE_TEXT)
505 // Ignore Modifer Keys
506 if(Codepoint > KEY_MODIFIERS) return;
508 // Get UTF-8/ANSI Encoding
512 buf[0] = '\x1B'; buf[1] = '[';
513 buf[2] = 'D'; len = 3;
516 buf[0] = '\x1B'; buf[1] = '[';
517 buf[2] = 'C'; len = 3;
520 len = WriteUTF8( buf, Codepoint );
521 //Log("Codepoint = 0x%x", Codepoint);
525 //Log("len = %i, buf = %s", len, buf);
528 if( MAX_INPUT_CHARS8 - term->InputWrite >= len )
529 memcpy( &term->InputBuffer[term->InputWrite], buf, len );
531 memcpy( &term->InputBuffer[term->InputWrite], buf, MAX_INPUT_CHARS8 - term->InputWrite );
532 memcpy( &term->InputBuffer[0], buf, len - (MAX_INPUT_CHARS8 - term->InputWrite) );
534 // Roll the buffer over
535 term->InputWrite += len;
536 term->InputWrite %= MAX_INPUT_CHARS8;
537 if( (term->InputWrite - term->InputRead + MAX_INPUT_CHARS8)%MAX_INPUT_CHARS8 < len ) {
538 term->InputRead = term->InputWrite + 1;
539 term->InputRead %= MAX_INPUT_CHARS8;
545 // Encode the raw UTF-32 Key
546 ((Uint32*)term->InputBuffer)[ term->InputWrite ] = Codepoint;
548 term->InputWrite %= MAX_INPUT_CHARS32;
549 if(term->InputRead == term->InputWrite) {
551 term->InputRead %= MAX_INPUT_CHARS32;
557 * \fn void VT_int_PutString(tVTerm *Term, Uint8 *Buffer, Uint Count)
558 * \brief Print a string to the Virtual Terminal
560 void VT_int_PutString(tVTerm *Term, Uint8 *Buffer, Uint Count)
564 for( i = 0; i < Count; i++ )
566 if( Buffer[i] == 0x1B ) // Escape Sequence
569 i += VT_int_ParseEscape(Term, (char*)&Buffer[i]);
573 if( Buffer[i] < 128 ) // Plain ASCII
574 VT_int_PutChar(Term, Buffer[i]);
576 i += ReadUTF8(&Buffer[i], &val);
577 VT_int_PutChar(Term, val);
582 if( !(Term->Flags & VT_FLAG_HIDECSR) )
584 tVideo_IOCtl_Pos pos;
585 pos.x = Term->WritePos % Term->Width;
586 pos.y = Term->WritePos / Term->Width;
587 VFS_IOCtl(giVT_OutputDevHandle, VIDEO_IOCTL_SETCURSOR, &pos);
592 * \fn void VT_int_ClearLine(tVTerm *Term, int Num)
593 * \brief Clears a line in a virtual terminal
595 void VT_int_ClearLine(tVTerm *Term, int Num)
598 //ENTER("pTerm iNum", Term, Num);
599 for( i = Term->Width; i--; )
601 Term->Text[ Num*Term->Width + i ].Ch = 0;
602 Term->Text[ Num*Term->Width + i ].Colour = Term->CurColour;
608 * \fn int VT_int_ParseEscape(tVTerm *Term, char *Buffer)
609 * \brief Parses a VT100 Escape code
611 int VT_int_ParseEscape(tVTerm *Term, char *Buffer)
616 int args[4] = {0,0,0,0};
624 while('0' <= c && c <= '9') {
629 if( j != 1 ) argc ++;
632 // Get string (what does this do?)
640 if( ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z'))
646 if(argc == 1) tmp = args[0];
649 if( Term->WritePos-(tmp-1) % Term->Width == 0 )
650 Term->WritePos -= Term->WritePos % Term->Width;
652 Term->WritePos -= tmp;
657 if(argc == 1) tmp = args[0];
659 if( (Term->WritePos + tmp) % Term->Width == 0 ) {
660 Term->WritePos -= Term->WritePos % Term->Width;
661 Term->WritePos += Term->Width - 1;
663 Term->WritePos += tmp;
673 int i = Term->Height * VT_SCROLLBACK;
674 while( i-- ) VT_int_ClearLine(Term, i);
677 VT_int_UpdateScreen(Term, 1);
687 if( 0 <= args[argc] && args[argc] <= 8)
691 case 0: Term->CurColour = DEFAULT_COLOUR; break; // Reset
692 case 1: Term->CurColour |= 0x80000000; break; // Bright
693 case 2: Term->CurColour &= ~0x80000000; break; // Dim
697 else if(30 <= args[argc] && args[argc] <= 37) {
698 Term->CurColour &= 0xF000FFFF;
699 Term->CurColour |= (Uint32)caVT100Colours[ args[argc]-30+(Term->CurColour>>28) ] << 16;
702 else if(40 <= args[argc] && args[argc] <= 47) {
703 Term->CurColour &= 0xFFFF8000;
704 Term->CurColour |= caVT100Colours[ args[argc]-40+((Term->CurColour>>12)&15) ];
720 * \fn void VT_int_PutChar(tVTerm *Term, Uint32 Ch)
721 * \brief Write a single character to a VTerm
723 void VT_int_PutChar(tVTerm *Term, Uint32 Ch)
726 //ENTER("pTerm xCh", Term, Ch);
727 //LOG("Term = {WritePos:%i, ViewPos:%i}\n", Term->WritePos, Term->ViewPos);
731 case '\0': return; // Ignore NULL byte
733 Term->WritePos += Term->Width;
735 Term->WritePos -= Term->WritePos % Term->Width;
740 Term->Text[ Term->WritePos ].Ch = '\0';
741 Term->Text[ Term->WritePos ].Colour = Term->CurColour;
743 } while(Term->WritePos & 7);
747 // Backspace is invalid at Offset 0
748 if(Term->WritePos == 0) break;
752 if(Term->Text[ Term->WritePos ].Ch != '\0') {
753 Term->Text[ Term->WritePos ].Ch = 0;
754 Term->Text[ Term->WritePos ].Colour = Term->CurColour;
758 i = 7; // Limit it to 8
760 Term->Text[ Term->WritePos ].Ch = 0;
761 Term->Text[ Term->WritePos ].Colour = Term->CurColour;
763 } while(Term->WritePos && i-- && Term->Text[ Term->WritePos ].Ch == '\0');
764 if(Term->Text[ Term->WritePos ].Ch != '\0')
769 Term->Text[ Term->WritePos ].Ch = Ch;
770 Term->Text[ Term->WritePos ].Colour = Term->CurColour;
777 if(Term->WritePos >= Term->Width*Term->Height*VT_SCROLLBACK)
780 Term->WritePos -= Term->Width;
782 // Update view position
783 base = Term->Width*Term->Height*(VT_SCROLLBACK-1);
784 if(Term->ViewPos < base) Term->ViewPos += Term->Width;
785 if(Term->ViewPos > base) Term->ViewPos = base;
787 // Scroll terminal cache
788 base = Term->Width*(Term->Height*VT_SCROLLBACK-1);
793 &Term->Text[Term->Width],
794 Term->Width*(Term->Height-1)*VT_SCROLLBACK*sizeof(tVT_Char)
798 for( i = 0; i < Term->Width; i ++ )
800 Term->Text[ base + i ].Ch = 0;
801 Term->Text[ base + i ].Colour = Term->CurColour;
804 VT_int_UpdateScreen( Term, 1 );
806 else if(Term->WritePos > Term->Width*Term->Height+Term->ViewPos)
808 Term->ViewPos += Term->Width;
809 VT_int_UpdateScreen( Term, 1 );
812 VT_int_UpdateScreen( Term, 0 );
818 * \fn void VT_int_UpdateScreen( tVTerm *Term, int UpdateAll )
819 * \brief Updates the video framebuffer
821 void VT_int_UpdateScreen( tVTerm *Term, int UpdateAll )
823 // Only update if this is the current terminal
824 if( Term != &gVT_Terminals[giVT_CurrentTerminal] ) return;
826 if( Term->Mode == TERM_MODE_TEXT )
830 giVT_OutputDevHandle,
832 Term->Width*Term->Height*sizeof(tVT_Char),
833 &Term->Text[Term->ViewPos]
836 int pos = Term->WritePos - Term->WritePos % Term->Width;
838 giVT_OutputDevHandle,
839 (pos - Term->ViewPos)*sizeof(tVT_Char),
840 Term->Width*sizeof(tVT_Char),
848 giVT_OutputDevHandle,
850 Term->Width*Term->Height*sizeof(Uint32),
857 * \fn void VT_int_ChangeMode(tVTerm *Term, int NewMode)
858 * \brief Change the mode of a VTerm
860 void VT_int_ChangeMode(tVTerm *Term, int NewMode)
866 Term->Text = calloc( Term->Width*Term->Height*VT_SCROLLBACK, sizeof(tVT_Char) );
870 Term->Buffer = calloc( Term->Width*Term->Height, sizeof(Uint32) );
872 case TERM_MODE_OPENGL:
876 Term->Mode = NewMode;
882 #define MONOSPACE_FONT 10816
884 #if MONOSPACE_FONT == 10808 // 8x8
885 # include "vterm_font_8x8.h"
886 #elif MONOSPACE_FONT == 10816 // 8x16
887 # include "vterm_font_8x16.h"
890 // === PROTOTYPES ===
891 Uint8 *VT_Font_GetChar(Uint32 Codepoint);
894 int giVT_CharWidth = FONT_WIDTH;
895 int giVT_CharHeight = FONT_HEIGHT;
899 * \fn void VT_Font_Render(Uint32 Codepoint, void *Buffer, int Pitch, Uint32 BGC, Uint32 FGC)
900 * \brief Render a font character
902 void VT_Font_Render(Uint32 Codepoint, void *Buffer, int Pitch, Uint32 BGC, Uint32 FGC)
905 Uint32 *buf = Buffer;
907 font = VT_Font_GetChar(Codepoint);
909 for(y = 0; y < FONT_HEIGHT; y ++)
911 for(x = 0; x < FONT_WIDTH; x ++)
913 if(*font & (1 << (FONT_WIDTH-x)))
924 * \fn Uint32 VT_Colour12to24(Uint16 Col12)
927 Uint32 VT_Colour12to24(Uint16 Col12)
932 ret = (tmp << 0) | (tmp << 4);
933 tmp = (Col12 & 0xF0) >> 4;
934 ret |= (tmp << 8) | (tmp << 12);
935 tmp = (Col12 & 0xF00) >> 8;
936 ret |= (tmp << 16) | (tmp << 20);
941 * \fn Uint8 *VT_Font_GetChar(Uint32 Codepoint)
942 * \brief Gets an index into the font array given a Unicode Codepoint
943 * \note See http://en.wikipedia.org/wiki/CP437
945 Uint8 *VT_Font_GetChar(Uint32 Codepoint)
949 return &VTermFont[Codepoint*FONT_HEIGHT];
952 case 0xC7: index = 128; break; // Ç
953 case 0xFC: index = 129; break; // ü
954 case 0xE9: index = 130; break; // é
955 case 0xE2: index = 131; break; // â
956 case 0xE4: index = 132; break; // ä
957 case 0xE0: index = 133; break; // à
958 case 0xE5: index = 134; break; // å
959 case 0xE7: index = 135; break; // ç
960 case 0xEA: index = 136; break; // ê
961 case 0xEB: index = 137; break; // ë
962 case 0xE8: index = 138; break; // è
963 case 0xEF: index = 139; break; // ï
964 case 0xEE: index = 140; break; // î
965 case 0xEC: index = 141; break; // ì
966 case 0xC4: index = 142; break; // Ä
967 case 0xC5: index = 143; break; // Å
970 return &VTermFont[index*FONT_HEIGHT];
973 EXPORTAS(&giVT_CharWidth, giVT_CharWidth);
974 EXPORTAS(&giVT_CharHeight, giVT_CharHeight);
975 EXPORT(VT_Font_Render);
976 EXPORT(VT_Colour12to24);