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");
194 * \fn void VT_InitOutput()
195 * \brief Initialise Video Output
199 giVT_OutputDevHandle = VFS_Open(gsVT_OutputDevice, VFS_OPENFLAG_WRITE);
200 LOG("giVT_OutputDevHandle = %x\n", giVT_OutputDevHandle);
205 * \fn void VT_InitInput()
206 * \brief Initialises the input
210 giVT_InputDevHandle = VFS_Open(gsVT_InputDevice, VFS_OPENFLAG_READ);
211 LOG("giVT_InputDevHandle = %x\n", giVT_InputDevHandle);
212 if(giVT_InputDevHandle == -1) return ;
213 VFS_IOCtl(giVT_InputDevHandle, KB_IOCTL_SETCALLBACK, VT_KBCallBack);
217 * \fn char *VT_ReadDir(tVFS_Node *Node, int Pos)
218 * \brief Read from the VTerm Directory
220 char *VT_ReadDir(tVFS_Node *Node, int Pos)
222 if(Pos < 0) return NULL;
223 if(Pos >= NUM_VTS) return NULL;
224 return strdup( gVT_Terminals[Pos].Name );
228 * \fn tVFS_Node *VT_FindDir(tVFS_Node *Node, char *Name)
229 * \brief Find an item in the VTerm directory
231 tVFS_Node *VT_FindDir(tVFS_Node *Node, char *Name)
235 //ENTER("pNode sName", Node, Name);
237 // Open the input and output files if needed
238 if(giVT_OutputDevHandle == -2) VT_InitOutput();
239 if(giVT_InputDevHandle == -2) VT_InitInput();
242 if(Name[0] < '0' || Name[0] > '9' || Name[1] != '\0') {
253 //LEAVE('p', &gVT_Terminals[num].Node);
254 return &gVT_Terminals[num].Node;
258 * \fn int VT_Root_IOCtl(tVFS_Node *Node, int Id, void *Data)
259 * \brief Control the VTerm Driver
261 int VT_Root_IOCtl(tVFS_Node *Node, int Id, void *Data)
266 case DRV_IOCTL_TYPE: return DRV_TYPE_MISC;
267 case DRV_IOCTL_IDENT: memcpy(Data, "VT\0\0", 4); return 0;
268 case DRV_IOCTL_VERSION: return VERSION;
269 case DRV_IOCTL_LOOKUP: return 0;
271 case 4: // Get Video Driver
272 if(Data) strcpy(Data, gsVT_OutputDevice);
273 return strlen(gsVT_OutputDevice);
275 case 5: // Set Video Driver
276 if(!Data) return -EINVAL;
277 if(Threads_GetUID() != 0) return -EACCES;
281 free(gsVT_OutputDevice);
283 gsVT_OutputDevice = malloc(len+1);
284 strcpy(gsVT_OutputDevice, Data);
286 VFS_Close(giVT_OutputDevHandle);
287 giVT_OutputDevHandle = -1;
296 * \fn Uint64 VT_Read(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
297 * \brief Read from a virtual terminal
299 Uint64 VT_Read(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
302 tVTerm *term = &gVT_Terminals[ Node->Inode ];
304 // Check current mode
310 while(term->InputRead == term->InputWrite) Threads_Yield();
312 ((char*)Buffer)[pos] = term->InputBuffer[term->InputRead];
315 term->InputRead %= MAX_INPUT_CHARS8;
320 case TERM_MODE_OPENGL:
323 while(term->InputRead == term->InputWrite) Threads_Yield();
324 ((Uint32*)Buffer)[pos] = ((Uint32*)term->InputBuffer)[term->InputRead];
327 term->InputRead %= MAX_INPUT_CHARS32;
335 * \fn Uint64 VT_Write(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
336 * \brief Write to a virtual terminal
338 Uint64 VT_Write(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
340 tVTerm *term = &gVT_Terminals[ Node->Inode ];
342 //ENTER("pNode XOffset XLength pBuffer", Node, Offset, Length, Buffer);
348 VT_int_PutString(term, Buffer, Length);
357 * \fn int VT_Terminal_IOCtl(tVFS_Node *Node, int Id, void *Data)
358 * \brief Call an IO Control on a virtual terminal
360 int VT_Terminal_IOCtl(tVFS_Node *Node, int Id, void *Data)
363 tVTerm *term = Node->ImplPtr;
366 case DRV_IOCTL_TYPE: return DRV_TYPE_TERMINAL;
367 case DRV_IOCTL_IDENT: memcpy(Data, "VT\0\0", 4); return 0;
368 case DRV_IOCTL_VERSION: return VERSION;
369 case DRV_IOCTL_LOOKUP: return 0;
371 // Get/Set the mode (and apply any changes)
372 case TERM_IOCTL_MODETYPE:
373 if(Data == NULL) return term->Mode;
375 if(term->Mode != *iData) {
376 VT_int_ChangeMode(term, *iData);
379 // Update the screen dimensions
380 if(giVT_CurrentTerminal == Node->Inode)
381 VT_SetTerminal( giVT_CurrentTerminal );
384 // Get/set the terminal width
385 case TERM_IOCTL_WIDTH:
386 if(Data == NULL) return term->Width;
387 term->Width = *iData;
390 // Get/set the terminal height
391 case TERM_IOCTL_HEIGHT:
392 if(Data == NULL) return term->Height;
393 term->Height = *iData;
403 * \fn void VT_SetTerminal(int ID)
404 * \brief Set the current terminal
406 void VT_SetTerminal(int ID)
408 tVideo_IOCtl_Mode mode = {0};
411 // Create the video mode
412 mode.width = gVT_Terminals[ ID ].Width;
413 mode.height = gVT_Terminals[ ID ].Height;
415 if(gVT_Terminals[ ID ].Mode == TERM_MODE_TEXT) {
417 mode.flags = VIDEO_FLAG_TEXT;
419 // - Framebuffer or 3D
426 VFS_IOCtl( giVT_OutputDevHandle, VIDEO_IOCTL_FINDMODE, &mode );
428 gVT_Terminals[ ID ].RealWidth = mode.width;
429 gVT_Terminals[ ID ].RealHeight = mode.height;
430 VFS_IOCtl( giVT_OutputDevHandle, VIDEO_IOCTL_SETMODE, &modeNum );
432 // Update current terminal ID
433 Log("Changed terminal from %i to %i", giVT_CurrentTerminal, ID);
434 giVT_CurrentTerminal = ID;
437 VT_int_UpdateScreen( &gVT_Terminals[ ID ], 1 );
441 * \fn void VT_KBCallBack(Uint32 Codepoint)
442 * \brief Called on keyboard interrupt
444 void VT_KBCallBack(Uint32 Codepoint)
446 tVTerm *term = &gVT_Terminals[giVT_CurrentTerminal];
448 // How the hell did we get a Codepoint of zero?
449 if(Codepoint == 0) return;
452 if( Codepoint & 0x80000000 )
454 Codepoint &= 0x7FFFFFFF;
481 if(!gbVT_AltDown || !gbVT_CtrlDown)
485 case KEY_F1: VT_SetTerminal(0); return;
486 case KEY_F2: VT_SetTerminal(1); return;
487 case KEY_F3: VT_SetTerminal(2); return;
488 case KEY_F4: VT_SetTerminal(3); return;
489 case KEY_F5: VT_SetTerminal(4); return;
490 case KEY_F6: VT_SetTerminal(5); return;
491 case KEY_F7: VT_SetTerminal(6); return;
492 case KEY_F8: VT_SetTerminal(7); return;
493 case KEY_F9: VT_SetTerminal(8); return;
494 case KEY_F10: VT_SetTerminal(9); return;
495 case KEY_F11: VT_SetTerminal(10); return;
496 case KEY_F12: VT_SetTerminal(11); return;
505 if(term->Mode == TERM_MODE_TEXT)
510 // Ignore Modifer Keys
511 if(Codepoint > KEY_MODIFIERS) return;
513 // Get UTF-8/ANSI Encoding
517 buf[0] = '\x1B'; buf[1] = '[';
518 buf[2] = 'D'; len = 3;
521 buf[0] = '\x1B'; buf[1] = '[';
522 buf[2] = 'C'; len = 3;
525 len = WriteUTF8( buf, Codepoint );
526 //Log("Codepoint = 0x%x", Codepoint);
530 //Log("len = %i, buf = %s", len, buf);
533 if( MAX_INPUT_CHARS8 - term->InputWrite >= len )
534 memcpy( &term->InputBuffer[term->InputWrite], buf, len );
536 memcpy( &term->InputBuffer[term->InputWrite], buf, MAX_INPUT_CHARS8 - term->InputWrite );
537 memcpy( &term->InputBuffer[0], buf, len - (MAX_INPUT_CHARS8 - term->InputWrite) );
539 // Roll the buffer over
540 term->InputWrite += len;
541 term->InputWrite %= MAX_INPUT_CHARS8;
542 if( (term->InputWrite - term->InputRead + MAX_INPUT_CHARS8)%MAX_INPUT_CHARS8 < len ) {
543 term->InputRead = term->InputWrite + 1;
544 term->InputRead %= MAX_INPUT_CHARS8;
550 // Encode the raw UTF-32 Key
551 ((Uint32*)term->InputBuffer)[ term->InputWrite ] = Codepoint;
553 term->InputWrite %= MAX_INPUT_CHARS32;
554 if(term->InputRead == term->InputWrite) {
556 term->InputRead %= MAX_INPUT_CHARS32;
562 * \fn void VT_int_PutString(tVTerm *Term, Uint8 *Buffer, Uint Count)
563 * \brief Print a string to the Virtual Terminal
565 void VT_int_PutString(tVTerm *Term, Uint8 *Buffer, Uint Count)
569 for( i = 0; i < Count; i++ )
571 if( Buffer[i] == 0x1B ) // Escape Sequence
574 i += VT_int_ParseEscape(Term, (char*)&Buffer[i]);
578 if( Buffer[i] < 128 ) // Plain ASCII
579 VT_int_PutChar(Term, Buffer[i]);
581 i += ReadUTF8(&Buffer[i], &val);
582 VT_int_PutChar(Term, val);
587 if( !(Term->Flags & VT_FLAG_HIDECSR) )
589 tVideo_IOCtl_Pos pos;
590 pos.x = Term->WritePos % Term->Width;
591 pos.y = Term->WritePos / Term->Width;
592 VFS_IOCtl(giVT_OutputDevHandle, VIDEO_IOCTL_SETCURSOR, &pos);
597 * \fn void VT_int_ClearLine(tVTerm *Term, int Num)
598 * \brief Clears a line in a virtual terminal
600 void VT_int_ClearLine(tVTerm *Term, int Num)
603 //ENTER("pTerm iNum", Term, Num);
604 for( i = Term->Width; i--; )
606 Term->Text[ Num*Term->Width + i ].Ch = 0;
607 Term->Text[ Num*Term->Width + i ].Colour = Term->CurColour;
613 * \fn int VT_int_ParseEscape(tVTerm *Term, char *Buffer)
614 * \brief Parses a VT100 Escape code
616 int VT_int_ParseEscape(tVTerm *Term, char *Buffer)
621 int args[4] = {0,0,0,0};
629 while('0' <= c && c <= '9') {
634 if( j != 1 ) argc ++;
637 // Get string (what does this do?)
645 if( ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z'))
651 if(argc == 1) tmp = args[0];
654 if( Term->WritePos-(tmp-1) % Term->Width == 0 )
655 Term->WritePos -= Term->WritePos % Term->Width;
657 Term->WritePos -= tmp;
662 if(argc == 1) tmp = args[0];
664 if( (Term->WritePos + tmp) % Term->Width == 0 ) {
665 Term->WritePos -= Term->WritePos % Term->Width;
666 Term->WritePos += Term->Width - 1;
668 Term->WritePos += tmp;
678 int i = Term->Height * VT_SCROLLBACK;
679 while( i-- ) VT_int_ClearLine(Term, i);
682 VT_int_UpdateScreen(Term, 1);
692 if( 0 <= args[argc] && args[argc] <= 8)
696 case 0: Term->CurColour = DEFAULT_COLOUR; break; // Reset
697 case 1: Term->CurColour |= 0x80000000; break; // Bright
698 case 2: Term->CurColour &= ~0x80000000; break; // Dim
702 else if(30 <= args[argc] && args[argc] <= 37) {
703 Term->CurColour &= 0xF000FFFF;
704 Term->CurColour |= (Uint32)caVT100Colours[ args[argc]-30+(Term->CurColour>>28) ] << 16;
707 else if(40 <= args[argc] && args[argc] <= 47) {
708 Term->CurColour &= 0xFFFF8000;
709 Term->CurColour |= caVT100Colours[ args[argc]-40+((Term->CurColour>>12)&15) ];
725 * \fn void VT_int_PutChar(tVTerm *Term, Uint32 Ch)
726 * \brief Write a single character to a VTerm
728 void VT_int_PutChar(tVTerm *Term, Uint32 Ch)
731 //ENTER("pTerm xCh", Term, Ch);
732 //LOG("Term = {WritePos:%i, ViewPos:%i}\n", Term->WritePos, Term->ViewPos);
736 case '\0': return; // Ignore NULL byte
738 Term->WritePos += Term->Width;
740 Term->WritePos -= Term->WritePos % Term->Width;
745 Term->Text[ Term->WritePos ].Ch = '\0';
746 Term->Text[ Term->WritePos ].Colour = Term->CurColour;
748 } while(Term->WritePos & 7);
752 // Backspace is invalid at Offset 0
753 if(Term->WritePos == 0) break;
757 if(Term->Text[ Term->WritePos ].Ch != '\0') {
758 Term->Text[ Term->WritePos ].Ch = 0;
759 Term->Text[ Term->WritePos ].Colour = Term->CurColour;
763 i = 7; // Limit it to 8
765 Term->Text[ Term->WritePos ].Ch = 0;
766 Term->Text[ Term->WritePos ].Colour = Term->CurColour;
768 } while(Term->WritePos && i-- && Term->Text[ Term->WritePos ].Ch == '\0');
769 if(Term->Text[ Term->WritePos ].Ch != '\0')
774 Term->Text[ Term->WritePos ].Ch = Ch;
775 Term->Text[ Term->WritePos ].Colour = Term->CurColour;
782 if(Term->WritePos >= Term->Width*Term->Height*VT_SCROLLBACK)
785 Term->WritePos -= Term->Width;
787 // Update view position
788 base = Term->Width*Term->Height*(VT_SCROLLBACK-1);
789 if(Term->ViewPos < base) Term->ViewPos += Term->Width;
790 if(Term->ViewPos > base) Term->ViewPos = base;
792 // Scroll terminal cache
793 base = Term->Width*(Term->Height*VT_SCROLLBACK-1);
798 &Term->Text[Term->Width],
799 Term->Width*(Term->Height-1)*VT_SCROLLBACK*sizeof(tVT_Char)
803 for( i = 0; i < Term->Width; i ++ )
805 Term->Text[ base + i ].Ch = 0;
806 Term->Text[ base + i ].Colour = Term->CurColour;
809 VT_int_UpdateScreen( Term, 1 );
811 else if(Term->WritePos > Term->Width*Term->Height+Term->ViewPos)
813 Term->ViewPos += Term->Width;
814 VT_int_UpdateScreen( Term, 1 );
817 VT_int_UpdateScreen( Term, 0 );
823 * \fn void VT_int_UpdateScreen( tVTerm *Term, int UpdateAll )
824 * \brief Updates the video framebuffer
826 void VT_int_UpdateScreen( tVTerm *Term, int UpdateAll )
828 // Only update if this is the current terminal
829 if( Term != &gVT_Terminals[giVT_CurrentTerminal] ) return;
831 if( Term->Mode == TERM_MODE_TEXT )
835 giVT_OutputDevHandle,
837 Term->Width*Term->Height*sizeof(tVT_Char),
838 &Term->Text[Term->ViewPos]
841 int pos = Term->WritePos - Term->WritePos % Term->Width;
843 giVT_OutputDevHandle,
844 (pos - Term->ViewPos)*sizeof(tVT_Char),
845 Term->Width*sizeof(tVT_Char),
853 giVT_OutputDevHandle,
855 Term->Width*Term->Height*sizeof(Uint32),
862 * \fn void VT_int_ChangeMode(tVTerm *Term, int NewMode)
863 * \brief Change the mode of a VTerm
865 void VT_int_ChangeMode(tVTerm *Term, int NewMode)
871 Term->Text = calloc( Term->Width*Term->Height*VT_SCROLLBACK, sizeof(tVT_Char) );
875 Term->Buffer = calloc( Term->Width*Term->Height, sizeof(Uint32) );
877 case TERM_MODE_OPENGL:
881 Term->Mode = NewMode;
887 #define MONOSPACE_FONT 10816
889 #if MONOSPACE_FONT == 10808 // 8x8
890 # include "vterm_font_8x8.h"
891 #elif MONOSPACE_FONT == 10816 // 8x16
892 # include "vterm_font_8x16.h"
895 // === PROTOTYPES ===
896 Uint8 *VT_Font_GetChar(Uint32 Codepoint);
899 int giVT_CharWidth = FONT_WIDTH;
900 int giVT_CharHeight = FONT_HEIGHT;
904 * \fn void VT_Font_Render(Uint32 Codepoint, void *Buffer, int Pitch, Uint32 BGC, Uint32 FGC)
905 * \brief Render a font character
907 void VT_Font_Render(Uint32 Codepoint, void *Buffer, int Pitch, Uint32 BGC, Uint32 FGC)
910 Uint32 *buf = Buffer;
912 font = VT_Font_GetChar(Codepoint);
914 for(y = 0; y < FONT_HEIGHT; y ++)
916 for(x = 0; x < FONT_WIDTH; x ++)
918 if(*font & (1 << (FONT_WIDTH-x)))
929 * \fn Uint32 VT_Colour12to24(Uint16 Col12)
932 Uint32 VT_Colour12to24(Uint16 Col12)
937 ret = (tmp << 0) | (tmp << 4);
938 tmp = (Col12 & 0xF0) >> 4;
939 ret |= (tmp << 8) | (tmp << 12);
940 tmp = (Col12 & 0xF00) >> 8;
941 ret |= (tmp << 16) | (tmp << 20);
946 * \fn Uint8 *VT_Font_GetChar(Uint32 Codepoint)
947 * \brief Gets an index into the font array given a Unicode Codepoint
948 * \note See http://en.wikipedia.org/wiki/CP437
950 Uint8 *VT_Font_GetChar(Uint32 Codepoint)
954 return &VTermFont[Codepoint*FONT_HEIGHT];
957 case 0xC7: index = 128; break; // Ç
958 case 0xFC: index = 129; break; // ü
959 case 0xE9: index = 130; break; // é
960 case 0xE2: index = 131; break; // â
961 case 0xE4: index = 132; break; // ä
962 case 0xE0: index = 133; break; // à
963 case 0xE5: index = 134; break; // å
964 case 0xE7: index = 135; break; // ç
965 case 0xEA: index = 136; break; // ê
966 case 0xEB: index = 137; break; // ë
967 case 0xE8: index = 138; break; // è
968 case 0xEF: index = 139; break; // ï
969 case 0xEE: index = 140; break; // î
970 case 0xEC: index = 141; break; // ì
971 case 0xC4: index = 142; break; // Ä
972 case 0xC5: index = 143; break; // Å
975 return &VTermFont[index*FONT_HEIGHT];
978 EXPORTAS(&giVT_CharWidth, giVT_CharWidth);
979 EXPORTAS(&giVT_CharHeight, giVT_CharHeight);
980 EXPORT(VT_Font_Render);
981 EXPORT(VT_Colour12to24);