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
27 #define VT_FLAG_HASFB 0x10 //!< Set if the VTerm has requested the Framebuffer
30 VT_INMODE_TEXT8, // UTF-8 Text Mode (VT100 Emulation)
31 VT_INMODE_TEXT32, // UTF-32 Text Mode (Acess Native)
37 int Mode; //!< Current Mode (see ::eTplTerminal_Modes)
38 int Flags; //!< Flags (see VT_FLAG_*)
39 short Width; //!< Virtual Width
40 short Height; //!< Virtual Height
41 short RealWidth; //!< Real Width
42 short RealHeight; //!< Real Height
44 int ViewPos; //!< View Buffer Offset (Text Only)
45 int WritePos; //!< Write Buffer Offset (Text Only)
46 Uint32 CurColour; //!< Current Text Colour
47 char Name[2]; //!< Name of the terminal
49 int InputRead; //!< Input buffer read position
50 int InputWrite; //!< Input buffer write position
51 char InputBuffer[MAX_INPUT_CHARS8];
60 extern void Debug_SetKTerminal(char *File);
63 int VT_Install(char **Arguments);
64 char *VT_ReadDir(tVFS_Node *Node, int Pos);
65 tVFS_Node *VT_FindDir(tVFS_Node *Node, char *Name);
66 int VT_Root_IOCtl(tVFS_Node *Node, int Id, void *Data);
67 Uint64 VT_Read(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer);
68 Uint64 VT_Write(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer);
69 int VT_Terminal_IOCtl(tVFS_Node *Node, int Id, void *Data);
70 void VT_SetTerminal(int ID);
71 void VT_KBCallBack(Uint32 Codepoint);
72 void VT_int_PutString(tVTerm *Term, Uint8 *Buffer, Uint Count);
73 int VT_int_ParseEscape(tVTerm *Term, char *Buffer);
74 void VT_int_PutChar(tVTerm *Term, Uint32 Ch);
75 void VT_int_UpdateScreen( tVTerm *Term, int UpdateAll );
76 void VT_int_ChangeMode(tVTerm *Term, int NewMode);
79 const Uint16 caVT100Colours[] = {
80 VT_COL_BLACK, 0x700, 0x070, 0x770, 0x007, 0x707, 0x077, 0xAAA,
81 VT_COL_GREY, 0xF00, 0x0F0, 0xFF0, 0x00F, 0xF0F, 0x0FF, VT_COL_WHITE
85 MODULE_DEFINE(0, VERSION, VTerm, VT_Install, NULL, DEFAULT_OUTPUT, DEFAULT_INPUT, NULL);
86 tDevFS_Driver gVT_DrvInfo = {
89 .Flags = VFS_FFLAG_DIRECTORY,
93 .ReadDir = VT_ReadDir,
94 .FindDir = VT_FindDir,
95 .IOCtl = VT_Root_IOCtl
99 tVTerm gVT_Terminals[NUM_VTS];
100 int giVT_CurrentTerminal = 0;
101 // --- Driver Handles ---
102 char *gsVT_OutputDevice = NULL;
103 char *gsVT_InputDevice = NULL;
104 int giVT_OutputDevHandle = -2;
105 int giVT_InputDevHandle = -2;
106 // --- Key States --- (Used for VT Switching/Magic Combos)
107 int gbVT_CtrlDown = 0;
108 int gbVT_AltDown = 0;
109 int gbVT_SysrqDown = 0;
113 * \fn int VT_Install(char **Arguments)
114 * \brief Installs the Virtual Terminal Driver
116 int VT_Install(char **Arguments)
118 char **args = Arguments;
125 for( ; (arg = *args); args++ )
127 if(arg[0] != '-') continue;
133 if(args[1] == NULL) break;
134 if(gsVT_OutputDevice) free(gsVT_OutputDevice);
135 gsVT_OutputDevice = malloc(strlen(args[1])+1);
136 strcpy(gsVT_OutputDevice, args[1]);
142 if(args[1] == NULL) break;
143 if(gsVT_InputDevice) free(gsVT_InputDevice);
144 gsVT_InputDevice = malloc(strlen(args[1])+1);
145 strcpy(gsVT_InputDevice, args[1]);
154 if(!gsVT_OutputDevice) gsVT_OutputDevice = "/Devices/"DEFAULT_OUTPUT;
155 if(!gsVT_InputDevice) gsVT_InputDevice = "/Devices/"DEFAULT_INPUT;
157 LOG("Using '%s' as output", gsVT_OutputDevice);
158 LOG("Using '%s' as input", gsVT_InputDevice);
161 for( i = 0; i < NUM_VTS; i++ )
163 gVT_Terminals[i].Mode = TERM_MODE_TEXT;
164 gVT_Terminals[i].Flags = 0;
165 gVT_Terminals[i].Width = DEFAULT_WIDTH;
166 gVT_Terminals[i].Height = DEFAULT_HEIGHT;
167 gVT_Terminals[i].CurColour = DEFAULT_COLOUR;
168 gVT_Terminals[i].WritePos = 0;
169 gVT_Terminals[i].ViewPos = 0;
171 gVT_Terminals[i].Buffer = calloc( DEFAULT_WIDTH*DEFAULT_HEIGHT*VT_SCROLLBACK, sizeof(tVT_Char) );
173 gVT_Terminals[i].Name[0] = '0'+i;
174 gVT_Terminals[i].Name[1] = '\0';
175 gVT_Terminals[i].Node.Inode = i;
176 gVT_Terminals[i].Node.ImplPtr = &gVT_Terminals[i];
177 gVT_Terminals[i].Node.NumACLs = 0; // Only root can open virtual terminals
179 gVT_Terminals[i].Node.Read = VT_Read;
180 gVT_Terminals[i].Node.Write = VT_Write;
181 gVT_Terminals[i].Node.IOCtl = VT_Terminal_IOCtl;
185 DevFS_AddDevice( &gVT_DrvInfo );
187 // Set kernel output to VT0
188 Debug_SetKTerminal("/Devices/VTerm/0");
190 return MODULE_INIT_SUCCESS;
194 * \fn void VT_InitOutput()
195 * \brief Initialise Video Output
199 giVT_OutputDevHandle = VFS_Open(gsVT_OutputDevice, VFS_OPENFLAG_WRITE);
204 * \fn void VT_InitInput()
205 * \brief Initialises the input
209 giVT_InputDevHandle = VFS_Open(gsVT_InputDevice, VFS_OPENFLAG_READ);
210 if(giVT_InputDevHandle == -1) return ;
211 VFS_IOCtl(giVT_InputDevHandle, KB_IOCTL_SETCALLBACK, VT_KBCallBack);
215 * \fn char *VT_ReadDir(tVFS_Node *Node, int Pos)
216 * \brief Read from the VTerm Directory
218 char *VT_ReadDir(tVFS_Node *Node, int Pos)
220 if(Pos < 0) return NULL;
221 if(Pos >= NUM_VTS) return NULL;
222 return strdup( gVT_Terminals[Pos].Name );
226 * \fn tVFS_Node *VT_FindDir(tVFS_Node *Node, char *Name)
227 * \brief Find an item in the VTerm directory
229 tVFS_Node *VT_FindDir(tVFS_Node *Node, char *Name)
233 //ENTER("pNode sName", Node, Name);
235 // Open the input and output files if needed
236 if(giVT_OutputDevHandle == -2) VT_InitOutput();
237 if(giVT_InputDevHandle == -2) VT_InitInput();
240 if(Name[0] < '0' || Name[0] > '9' || Name[1] != '\0') {
251 //LEAVE('p', &gVT_Terminals[num].Node);
252 return &gVT_Terminals[num].Node;
256 * \fn int VT_Root_IOCtl(tVFS_Node *Node, int Id, void *Data)
257 * \brief Control the VTerm Driver
259 int VT_Root_IOCtl(tVFS_Node *Node, int Id, void *Data)
264 case DRV_IOCTL_TYPE: return DRV_TYPE_MISC;
265 case DRV_IOCTL_IDENT: memcpy(Data, "VT\0\0", 4); return 0;
266 case DRV_IOCTL_VERSION: return VERSION;
267 case DRV_IOCTL_LOOKUP: return 0;
269 case 4: // Get Video Driver
270 if(Data) strcpy(Data, gsVT_OutputDevice);
271 return strlen(gsVT_OutputDevice);
273 case 5: // Set Video Driver
274 if(!Data) return -EINVAL;
275 if(Threads_GetUID() != 0) return -EACCES;
279 free(gsVT_OutputDevice);
281 gsVT_OutputDevice = malloc(len+1);
282 strcpy(gsVT_OutputDevice, Data);
284 VFS_Close(giVT_OutputDevHandle);
285 giVT_OutputDevHandle = -1;
294 * \fn Uint64 VT_Read(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
295 * \brief Read from a virtual terminal
297 Uint64 VT_Read(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
300 tVTerm *term = &gVT_Terminals[ Node->Inode ];
302 // Check current mode
308 while(term->InputRead == term->InputWrite) Threads_Yield();
310 ((char*)Buffer)[pos] = term->InputBuffer[term->InputRead];
313 term->InputRead %= MAX_INPUT_CHARS8;
318 case TERM_MODE_OPENGL:
321 while(term->InputRead == term->InputWrite) Threads_Yield();
322 ((Uint32*)Buffer)[pos] = ((Uint32*)term->InputBuffer)[term->InputRead];
325 term->InputRead %= MAX_INPUT_CHARS32;
333 * \fn Uint64 VT_Write(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
334 * \brief Write to a virtual terminal
336 Uint64 VT_Write(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
338 tVTerm *term = &gVT_Terminals[ Node->Inode ];
340 //ENTER("pNode XOffset XLength pBuffer", Node, Offset, Length, Buffer);
346 VT_int_PutString(term, Buffer, Length);
355 * \fn int VT_Terminal_IOCtl(tVFS_Node *Node, int Id, void *Data)
356 * \brief Call an IO Control on a virtual terminal
358 int VT_Terminal_IOCtl(tVFS_Node *Node, int Id, void *Data)
361 tVTerm *term = Node->ImplPtr;
364 case DRV_IOCTL_TYPE: return DRV_TYPE_TERMINAL;
365 case DRV_IOCTL_IDENT: memcpy(Data, "VT\0\0", 4); return 0;
366 case DRV_IOCTL_VERSION: return VERSION;
367 case DRV_IOCTL_LOOKUP: return 0;
369 // Get/Set the mode (and apply any changes)
370 case TERM_IOCTL_MODETYPE:
371 if(Data == NULL) return term->Mode;
373 if(term->Mode != *iData) {
374 VT_int_ChangeMode(term, *iData);
377 // Update the screen dimensions
378 if(giVT_CurrentTerminal == Node->Inode)
379 VT_SetTerminal( giVT_CurrentTerminal );
382 // Get/set the terminal width
383 case TERM_IOCTL_WIDTH:
384 if(Data == NULL) return term->Width;
385 term->Width = *iData;
388 // Get/set the terminal height
389 case TERM_IOCTL_HEIGHT:
390 if(Data == NULL) return term->Height;
391 term->Height = *iData;
401 * \fn void VT_SetTerminal(int ID)
402 * \brief Set the current terminal
404 void VT_SetTerminal(int ID)
406 tVideo_IOCtl_Mode mode = {0};
409 // Create the video mode
410 mode.width = gVT_Terminals[ ID ].Width;
411 mode.height = gVT_Terminals[ ID ].Height;
413 if(gVT_Terminals[ ID ].Mode == TERM_MODE_TEXT) {
415 mode.flags = VIDEO_FLAG_TEXT;
417 // - Framebuffer or 3D
424 VFS_IOCtl( giVT_OutputDevHandle, VIDEO_IOCTL_FINDMODE, &mode );
426 gVT_Terminals[ ID ].RealWidth = mode.width;
427 gVT_Terminals[ ID ].RealHeight = mode.height;
428 VFS_IOCtl( giVT_OutputDevHandle, VIDEO_IOCTL_GETSETMODE, &modeNum );
430 // Update current terminal ID
431 Log("Changed terminal from %i to %i", giVT_CurrentTerminal, ID);
432 giVT_CurrentTerminal = ID;
435 VT_int_UpdateScreen( &gVT_Terminals[ ID ], 1 );
439 * \fn void VT_KBCallBack(Uint32 Codepoint)
440 * \brief Called on keyboard interrupt
442 void VT_KBCallBack(Uint32 Codepoint)
444 tVTerm *term = &gVT_Terminals[giVT_CurrentTerminal];
446 // How the hell did we get a Codepoint of zero?
447 if(Codepoint == 0) return;
450 if( Codepoint & 0x80000000 )
452 Codepoint &= 0x7FFFFFFF;
479 if(!gbVT_AltDown || !gbVT_CtrlDown)
483 case KEY_F1: VT_SetTerminal(0); return;
484 case KEY_F2: VT_SetTerminal(1); return;
485 case KEY_F3: VT_SetTerminal(2); return;
486 case KEY_F4: VT_SetTerminal(3); return;
487 case KEY_F5: VT_SetTerminal(4); return;
488 case KEY_F6: VT_SetTerminal(5); return;
489 case KEY_F7: VT_SetTerminal(6); return;
490 case KEY_F8: VT_SetTerminal(7); return;
491 case KEY_F9: VT_SetTerminal(8); return;
492 case KEY_F10: VT_SetTerminal(9); return;
493 case KEY_F11: VT_SetTerminal(10); return;
494 case KEY_F12: VT_SetTerminal(11); return;
503 if(term->Mode == TERM_MODE_TEXT)
508 // Ignore Modifer Keys
509 if(Codepoint > KEY_MODIFIERS) return;
511 // Get UTF-8/ANSI Encoding
515 buf[0] = '\x1B'; buf[1] = '['; buf[2] = 'D';
519 buf[0] = '\x1B'; buf[1] = '['; buf[2] = 'C';
523 buf[0] = '\x1B'; buf[1] = '['; buf[2] = 'A';
527 buf[0] = '\x1B'; buf[1] = '['; buf[2] = 'B';
532 buf[0] = '\x1B'; buf[1] = '['; buf[2] = '5'; // Some overline also
533 //len = 4; // Commented out until I'm sure
539 // Attempt to encode in UTF-8
541 len = WriteUTF8( buf, Codepoint );
543 Warning("Codepoint (%x) is unrepresentable in UTF-8", Codepoint);
549 // Unprintable / Don't Pass
554 if( MAX_INPUT_CHARS8 - term->InputWrite >= len )
555 memcpy( &term->InputBuffer[term->InputWrite], buf, len );
557 memcpy( &term->InputBuffer[term->InputWrite], buf, MAX_INPUT_CHARS8 - term->InputWrite );
558 memcpy( &term->InputBuffer[0], buf, len - (MAX_INPUT_CHARS8 - term->InputWrite) );
560 // Roll the buffer over
561 term->InputWrite += len;
562 term->InputWrite %= MAX_INPUT_CHARS8;
563 if( (term->InputWrite - term->InputRead + MAX_INPUT_CHARS8)%MAX_INPUT_CHARS8 < len ) {
564 term->InputRead = term->InputWrite + 1;
565 term->InputRead %= MAX_INPUT_CHARS8;
571 // Encode the raw UTF-32 Key
572 ((Uint32*)term->InputBuffer)[ term->InputWrite ] = Codepoint;
574 term->InputWrite %= MAX_INPUT_CHARS32;
575 if(term->InputRead == term->InputWrite) {
577 term->InputRead %= MAX_INPUT_CHARS32;
583 * \fn void VT_int_PutString(tVTerm *Term, Uint8 *Buffer, Uint Count)
584 * \brief Print a string to the Virtual Terminal
586 void VT_int_PutString(tVTerm *Term, Uint8 *Buffer, Uint Count)
590 for( i = 0; i < Count; i++ )
592 if( Buffer[i] == 0x1B ) // Escape Sequence
595 i += VT_int_ParseEscape(Term, (char*)&Buffer[i]);
599 if( Buffer[i] < 128 ) // Plain ASCII
600 VT_int_PutChar(Term, Buffer[i]);
602 i += ReadUTF8(&Buffer[i], &val);
603 VT_int_PutChar(Term, val);
608 if( !(Term->Flags & VT_FLAG_HIDECSR) )
610 tVideo_IOCtl_Pos pos;
611 pos.x = Term->WritePos % Term->Width;
612 pos.y = Term->WritePos / Term->Width;
613 VFS_IOCtl(giVT_OutputDevHandle, VIDEO_IOCTL_SETCURSOR, &pos);
618 * \fn void VT_int_ClearLine(tVTerm *Term, int Num)
619 * \brief Clears a line in a virtual terminal
621 void VT_int_ClearLine(tVTerm *Term, int Num)
624 //ENTER("pTerm iNum", Term, Num);
625 for( i = Term->Width; i--; )
627 Term->Text[ Num*Term->Width + i ].Ch = 0;
628 Term->Text[ Num*Term->Width + i ].Colour = Term->CurColour;
634 * \fn int VT_int_ParseEscape(tVTerm *Term, char *Buffer)
635 * \brief Parses a VT100 Escape code
637 int VT_int_ParseEscape(tVTerm *Term, char *Buffer)
642 int args[4] = {0,0,0,0};
650 while('0' <= c && c <= '9') {
655 if( j != 1 ) argc ++;
658 // Get string (what does this do?)
666 if( ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z'))
672 if(argc == 1) tmp = args[0];
675 if( Term->WritePos-(tmp-1) % Term->Width == 0 )
676 Term->WritePos -= Term->WritePos % Term->Width;
678 Term->WritePos -= tmp;
683 if(argc == 1) tmp = args[0];
685 if( (Term->WritePos + tmp) % Term->Width == 0 ) {
686 Term->WritePos -= Term->WritePos % Term->Width;
687 Term->WritePos += Term->Width - 1;
689 Term->WritePos += tmp;
699 int i = Term->Height * VT_SCROLLBACK;
700 while( i-- ) VT_int_ClearLine(Term, i);
703 VT_int_UpdateScreen(Term, 1);
713 if( 0 <= args[argc] && args[argc] <= 8)
717 case 0: Term->CurColour = DEFAULT_COLOUR; break; // Reset
718 case 1: Term->CurColour |= 0x80000000; break; // Bright
719 case 2: Term->CurColour &= ~0x80000000; break; // Dim
723 else if(30 <= args[argc] && args[argc] <= 37) {
724 Term->CurColour &= 0xF000FFFF;
725 Term->CurColour |= (Uint32)caVT100Colours[ args[argc]-30+(Term->CurColour>>28) ] << 16;
728 else if(40 <= args[argc] && args[argc] <= 47) {
729 Term->CurColour &= 0xFFFF8000;
730 Term->CurColour |= caVT100Colours[ args[argc]-40+((Term->CurColour>>12)&15) ];
746 * \fn void VT_int_PutChar(tVTerm *Term, Uint32 Ch)
747 * \brief Write a single character to a VTerm
749 void VT_int_PutChar(tVTerm *Term, Uint32 Ch)
752 //ENTER("pTerm xCh", Term, Ch);
753 //LOG("Term = {WritePos:%i, ViewPos:%i}", Term->WritePos, Term->ViewPos);
757 case '\0': return; // Ignore NULL byte
759 Term->WritePos += Term->Width;
761 Term->WritePos -= Term->WritePos % Term->Width;
766 Term->Text[ Term->WritePos ].Ch = '\0';
767 Term->Text[ Term->WritePos ].Colour = Term->CurColour;
769 } while(Term->WritePos & 7);
773 // Backspace is invalid at Offset 0
774 if(Term->WritePos == 0) break;
778 if(Term->Text[ Term->WritePos ].Ch != '\0') {
779 Term->Text[ Term->WritePos ].Ch = 0;
780 Term->Text[ Term->WritePos ].Colour = Term->CurColour;
784 i = 7; // Limit it to 8
786 Term->Text[ Term->WritePos ].Ch = 0;
787 Term->Text[ Term->WritePos ].Colour = Term->CurColour;
789 } while(Term->WritePos && i-- && Term->Text[ Term->WritePos ].Ch == '\0');
790 if(Term->Text[ Term->WritePos ].Ch != '\0')
795 Term->Text[ Term->WritePos ].Ch = Ch;
796 Term->Text[ Term->WritePos ].Colour = Term->CurColour;
803 if(Term->WritePos >= Term->Width*Term->Height*VT_SCROLLBACK)
806 Term->WritePos -= Term->Width;
808 // Update view position
809 base = Term->Width*Term->Height*(VT_SCROLLBACK-1);
810 if(Term->ViewPos < base) Term->ViewPos += Term->Width;
811 if(Term->ViewPos > base) Term->ViewPos = base;
813 // Scroll terminal cache
814 base = Term->Width*(Term->Height*VT_SCROLLBACK-1);
819 &Term->Text[Term->Width],
820 Term->Width*(Term->Height-1)*VT_SCROLLBACK*sizeof(tVT_Char)
824 for( i = 0; i < Term->Width; i ++ )
826 Term->Text[ base + i ].Ch = 0;
827 Term->Text[ base + i ].Colour = Term->CurColour;
830 VT_int_UpdateScreen( Term, 1 );
832 else if(Term->WritePos > Term->Width*Term->Height+Term->ViewPos)
834 Term->ViewPos += Term->Width;
835 VT_int_UpdateScreen( Term, 1 );
838 VT_int_UpdateScreen( Term, 0 );
844 * \fn void VT_int_UpdateScreen( tVTerm *Term, int UpdateAll )
845 * \brief Updates the video framebuffer
847 void VT_int_UpdateScreen( tVTerm *Term, int UpdateAll )
849 // Only update if this is the current terminal
850 if( Term != &gVT_Terminals[giVT_CurrentTerminal] ) return;
852 if( Term->Mode == TERM_MODE_TEXT )
856 giVT_OutputDevHandle,
858 Term->Width*Term->Height*sizeof(tVT_Char),
859 &Term->Text[Term->ViewPos]
862 int pos = Term->WritePos - Term->WritePos % Term->Width;
864 giVT_OutputDevHandle,
865 (pos - Term->ViewPos)*sizeof(tVT_Char),
866 Term->Width*sizeof(tVT_Char),
874 giVT_OutputDevHandle,
876 Term->Width*Term->Height*sizeof(Uint32),
883 * \fn void VT_int_ChangeMode(tVTerm *Term, int NewMode)
884 * \brief Change the mode of a VTerm
886 void VT_int_ChangeMode(tVTerm *Term, int NewMode)
892 Term->Text = calloc( Term->Width*Term->Height*VT_SCROLLBACK, sizeof(tVT_Char) );
896 Term->Buffer = calloc( Term->Width*Term->Height, sizeof(Uint32) );
898 case TERM_MODE_OPENGL:
902 Term->Mode = NewMode;
908 #define MONOSPACE_FONT 10816
910 #if MONOSPACE_FONT == 10808 // 8x8
911 # include "vterm_font_8x8.h"
912 #elif MONOSPACE_FONT == 10816 // 8x16
913 # include "vterm_font_8x16.h"
916 // === PROTOTYPES ===
917 Uint8 *VT_Font_GetChar(Uint32 Codepoint);
920 int giVT_CharWidth = FONT_WIDTH+1;
921 int giVT_CharHeight = FONT_HEIGHT;
925 * \fn void VT_Font_Render(Uint32 Codepoint, void *Buffer, int Pitch, Uint32 BGC, Uint32 FGC)
926 * \brief Render a font character
928 void VT_Font_Render(Uint32 Codepoint, void *Buffer, int Pitch, Uint32 BGC, Uint32 FGC)
931 Uint32 *buf = Buffer;
934 font = VT_Font_GetChar(Codepoint);
936 for(y = 0; y < FONT_HEIGHT; y ++)
938 for(x = 0; x < FONT_WIDTH; x ++)
940 if(*font & (1 << (FONT_WIDTH-x-1)))
951 * \fn Uint32 VT_Colour12to24(Uint16 Col12)
954 Uint32 VT_Colour12to24(Uint16 Col12)
959 ret = (tmp << 0) | (tmp << 4);
960 tmp = (Col12 & 0xF0) >> 4;
961 ret |= (tmp << 8) | (tmp << 12);
962 tmp = (Col12 & 0xF00) >> 8;
963 ret |= (tmp << 16) | (tmp << 20);
968 * \fn Uint8 *VT_Font_GetChar(Uint32 Codepoint)
969 * \brief Gets an index into the font array given a Unicode Codepoint
970 * \note See http://en.wikipedia.org/wiki/CP437
972 Uint8 *VT_Font_GetChar(Uint32 Codepoint)
976 return &VTermFont[Codepoint*FONT_HEIGHT];
979 case 0xC7: index = 128; break; // Ç
980 case 0xFC: index = 129; break; // ü
981 case 0xE9: index = 130; break; // é
982 case 0xE2: index = 131; break; // â
983 case 0xE4: index = 132; break; // ä
984 case 0xE0: index = 133; break; // à
985 case 0xE5: index = 134; break; // å
986 case 0xE7: index = 135; break; // ç
987 case 0xEA: index = 136; break; // ê
988 case 0xEB: index = 137; break; // ë
989 case 0xE8: index = 138; break; // è
990 case 0xEF: index = 139; break; // ï
991 case 0xEE: index = 140; break; // î
992 case 0xEC: index = 141; break; // ì
993 case 0xC4: index = 142; break; // Ä
994 case 0xC5: index = 143; break; // Å
997 return &VTermFont[index*FONT_HEIGHT];
1000 EXPORTAS(&giVT_CharWidth, giVT_CharWidth);
1001 EXPORTAS(&giVT_CharHeight, giVT_CharHeight);
1002 EXPORT(VT_Font_Render);
1003 EXPORT(VT_Colour12to24);