2 * Acess2 Virtual Terminal Driver
8 #include <tpl_drv_video.h>
9 #include <tpl_drv_keyboard.h>
10 #include <tpl_drv_terminal.h>
13 #define USE_CTRL_ALT 0
16 #define VERSION ((0<<8)|(50))
19 #define MAX_INPUT_CHARS32 64
20 #define MAX_INPUT_CHARS8 (MAX_INPUT_CHARS32*4)
21 //#define DEFAULT_OUTPUT "BochsGA"
22 #define DEFAULT_OUTPUT "Vesa"
23 #define DEFAULT_INPUT "PS2Keyboard"
24 #define DEFAULT_WIDTH 640
25 #define DEFAULT_HEIGHT 480
26 #define DEFAULT_SCROLLBACK 2 // 2 Screens of text + current screen
27 #define TEXTTERM_WIDTH (BOOT_WIDTH/8)
28 #define TEXTTERM_HEIGHT (BOOT_WIDTH/16)
29 #define DEFAULT_COLOUR (VT_COL_BLACK|(0xAAA<<16))
31 #define VT_FLAG_HIDECSR 0x01
32 #define VT_FLAG_HASFB 0x10 //!< Set if the VTerm has requested the Framebuffer
35 VT_INMODE_TEXT8, // UTF-8 Text Mode (VT100 Emulation)
36 VT_INMODE_TEXT32, // UTF-32 Text Mode (Acess Native)
42 int Mode; //!< Current Mode (see ::eTplTerminal_Modes)
43 int Flags; //!< Flags (see VT_FLAG_*)
44 short Width; //!< Virtual Width
45 short Height; //!< Virtual Height
47 int ViewPos; //!< View Buffer Offset (Text Only)
48 int WritePos; //!< Write Buffer Offset (Text Only)
49 Uint32 CurColour; //!< Current Text Colour
51 int InputRead; //!< Input buffer read position
52 int InputWrite; //!< Input buffer write position
53 char InputBuffer[MAX_INPUT_CHARS8];
58 char Name[2]; //!< Name of the terminal
63 extern void Debug_SetKTerminal(char *File);
66 int VT_Install(char **Arguments);
67 void VT_InitOutput(void);
68 void VT_InitInput(void);
69 char *VT_ReadDir(tVFS_Node *Node, int Pos);
70 tVFS_Node *VT_FindDir(tVFS_Node *Node, char *Name);
71 int VT_Root_IOCtl(tVFS_Node *Node, int Id, void *Data);
72 Uint64 VT_Read(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer);
73 Uint64 VT_Write(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer);
74 int VT_Terminal_IOCtl(tVFS_Node *Node, int Id, void *Data);
75 void VT_SetResolution(int Width, int Height);
76 void VT_SetMode(int Mode);
77 void VT_SetTerminal(int ID);
78 void VT_KBCallBack(Uint32 Codepoint);
79 void VT_int_PutString(tVTerm *Term, Uint8 *Buffer, Uint Count);
80 int VT_int_ParseEscape(tVTerm *Term, char *Buffer);
81 void VT_int_PutChar(tVTerm *Term, Uint32 Ch);
82 void VT_int_ScrollFramebuffer( tVTerm *Term );
83 void VT_int_UpdateScreen( tVTerm *Term, int UpdateAll );
84 void VT_int_ChangeMode(tVTerm *Term, int NewMode);
87 const Uint16 caVT100Colours[] = {
88 // Black, Red, Green, Yellow, Blue, Purple, Cyan, Gray
89 // Same again, but bright
90 VT_COL_BLACK, 0x700, 0x070, 0x770, 0x007, 0x707, 0x077, 0xAAA,
91 VT_COL_GREY, 0xF00, 0x0F0, 0xFF0, 0x00F, 0xF0F, 0x0FF, VT_COL_WHITE
95 MODULE_DEFINE(0, VERSION, VTerm, VT_Install, NULL, DEFAULT_OUTPUT, DEFAULT_INPUT, NULL);
96 tDevFS_Driver gVT_DrvInfo = {
99 .Flags = VFS_FFLAG_DIRECTORY,
103 .ReadDir = VT_ReadDir,
104 .FindDir = VT_FindDir,
105 .IOCtl = VT_Root_IOCtl
109 tVTerm gVT_Terminals[NUM_VTS];
110 int giVT_CurrentTerminal = 0;
111 tVTerm *gpVT_CurTerm = &gVT_Terminals[0];
112 // --- Video State ---
113 short giVT_RealWidth = DEFAULT_WIDTH; //!< Screen Width
114 short giVT_RealHeight = DEFAULT_HEIGHT; //!< Screen Height
115 int giVT_Scrollback = DEFAULT_SCROLLBACK;
116 // --- Driver Handles ---
117 char *gsVT_OutputDevice = NULL;
118 char *gsVT_InputDevice = NULL;
119 int giVT_OutputDevHandle = -2;
120 int giVT_InputDevHandle = -2;
121 // --- Key States --- (Used for VT Switching/Magic Combos)
122 int gbVT_CtrlDown = 0;
123 int gbVT_AltDown = 0;
124 int gbVT_SysrqDown = 0;
128 * \fn int VT_Install(char **Arguments)
129 * \brief Installs the Virtual Terminal Driver
131 int VT_Install(char **Arguments)
138 char **args = Arguments;
139 char *arg, *opt, *val;
140 for( ; (arg = *args); args++ )
142 Log_Debug("VTerm", "Argument '%s'", arg);
144 val = arg + strpos(arg, '='); *val++ = '\0';
146 if( strcmp(opt, "Video") == 0 ) {
147 if(gsVT_OutputDevice) free(gsVT_OutputDevice);
148 gsVT_OutputDevice = strdup(val);
150 else if( strcmp(opt, "Input") == 0 ) {
151 if(gsVT_InputDevice) free(gsVT_InputDevice);
152 gsVT_InputDevice = strdup(val);
154 else if( strcmp(opt, "Width") == 0 ) {
155 giVT_RealWidth = atoi( val );
157 else if( strcmp(opt, "Height") == 0 ) {
158 giVT_RealHeight = atoi( val );
160 else if( strcmp(opt, "Scrollback") == 0 ) {
161 giVT_Scrollback = atoi( val );
167 if(!gsVT_OutputDevice) gsVT_OutputDevice = "/Devices/"DEFAULT_OUTPUT;
168 if(!gsVT_InputDevice) gsVT_InputDevice = "/Devices/"DEFAULT_INPUT;
170 Log_Log("VTerm", "Using '%s' as output", gsVT_OutputDevice);
171 Log_Log("VTerm", "Using '%s' as input", gsVT_InputDevice);
174 for( i = 0; i < NUM_VTS; i++ )
176 gVT_Terminals[i].Mode = TERM_MODE_TEXT;
177 gVT_Terminals[i].Flags = 0;
178 gVT_Terminals[i].Width = giVT_RealWidth/giVT_CharWidth;
179 gVT_Terminals[i].Height = giVT_RealHeight/giVT_CharHeight;
180 gVT_Terminals[i].CurColour = DEFAULT_COLOUR;
181 gVT_Terminals[i].WritePos = 0;
182 gVT_Terminals[i].ViewPos = 0;
184 gVT_Terminals[i].Buffer = calloc(
185 gVT_Terminals[i].Width*gVT_Terminals[i].Height*(giVT_Scrollback+1),
189 gVT_Terminals[i].Name[0] = '0'+i;
190 gVT_Terminals[i].Name[1] = '\0';
191 gVT_Terminals[i].Node.Inode = i;
192 gVT_Terminals[i].Node.ImplPtr = &gVT_Terminals[i];
193 gVT_Terminals[i].Node.NumACLs = 0; // Only root can open virtual terminals
195 gVT_Terminals[i].Node.Read = VT_Read;
196 gVT_Terminals[i].Node.Write = VT_Write;
197 gVT_Terminals[i].Node.IOCtl = VT_Terminal_IOCtl;
201 DevFS_AddDevice( &gVT_DrvInfo );
206 // Set kernel output to VT0
207 Debug_SetKTerminal("/Devices/VTerm/0");
209 Log_Log("VTerm", "Returning %i", MODULE_ERR_OK);
210 return MODULE_ERR_OK;
214 * \fn void VT_InitOutput()
215 * \brief Initialise Video Output
219 giVT_OutputDevHandle = VFS_Open(gsVT_OutputDevice, VFS_OPENFLAG_WRITE);
220 if(giVT_InputDevHandle == -1) {
221 Log_Warning("VTerm", "Oh F**k, I can't open the video device '%s'", gsVT_OutputDevice);
224 VT_SetResolution(giVT_RealWidth, giVT_RealHeight);
226 VT_SetMode( VIDEO_BUFFMT_TEXT );
230 * \fn void VT_InitInput()
231 * \brief Initialises the input
235 giVT_InputDevHandle = VFS_Open(gsVT_InputDevice, VFS_OPENFLAG_READ);
236 if(giVT_InputDevHandle == -1) return ;
237 VFS_IOCtl(giVT_InputDevHandle, KB_IOCTL_SETCALLBACK, VT_KBCallBack);
241 * \fn char *VT_ReadDir(tVFS_Node *Node, int Pos)
242 * \brief Read from the VTerm Directory
244 char *VT_ReadDir(tVFS_Node *Node, int Pos)
246 if(Pos < 0) return NULL;
247 if(Pos >= NUM_VTS) return NULL;
248 return strdup( gVT_Terminals[Pos].Name );
252 * \fn tVFS_Node *VT_FindDir(tVFS_Node *Node, char *Name)
253 * \brief Find an item in the VTerm directory
255 tVFS_Node *VT_FindDir(tVFS_Node *Node, char *Name)
259 ENTER("pNode sName", Node, Name);
261 // Open the input and output files if needed
262 if(giVT_OutputDevHandle == -2) VT_InitOutput();
263 if(giVT_InputDevHandle == -2) VT_InitInput();
266 if(Name[0] < '0' || Name[0] > '9' || Name[1] != '\0') {
277 LEAVE('p', &gVT_Terminals[num].Node);
278 return &gVT_Terminals[num].Node;
282 * \fn int VT_Root_IOCtl(tVFS_Node *Node, int Id, void *Data)
283 * \brief Control the VTerm Driver
285 int VT_Root_IOCtl(tVFS_Node *Node, int Id, void *Data)
290 case DRV_IOCTL_TYPE: return DRV_TYPE_MISC;
291 case DRV_IOCTL_IDENT: memcpy(Data, "VT\0\0", 4); return 0;
292 case DRV_IOCTL_VERSION: return VERSION;
293 case DRV_IOCTL_LOOKUP: return 0;
295 case 4: // Get Video Driver
296 if(Data) strcpy(Data, gsVT_OutputDevice);
297 return strlen(gsVT_OutputDevice);
299 case 5: // Set Video Driver
300 if(!Data) return -EINVAL;
301 if(Threads_GetUID() != 0) return -EACCES;
305 free(gsVT_OutputDevice);
307 gsVT_OutputDevice = malloc(len+1);
308 strcpy(gsVT_OutputDevice, Data);
310 VFS_Close(giVT_OutputDevHandle);
311 giVT_OutputDevHandle = -1;
320 * \fn Uint64 VT_Read(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
321 * \brief Read from a virtual terminal
323 Uint64 VT_Read(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
326 tVTerm *term = &gVT_Terminals[ Node->Inode ];
328 // Check current mode
334 while(term->InputRead == term->InputWrite) Threads_Yield();
336 ((char*)Buffer)[pos] = term->InputBuffer[term->InputRead];
339 term->InputRead %= MAX_INPUT_CHARS8;
347 while(term->InputRead == term->InputWrite) Threads_Yield();
348 ((Uint32*)Buffer)[pos] = ((Uint32*)term->InputBuffer)[term->InputRead];
351 term->InputRead %= MAX_INPUT_CHARS32;
359 * \fn Uint64 VT_Write(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
360 * \brief Write to a virtual terminal
362 Uint64 VT_Write(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
364 tVTerm *term = &gVT_Terminals[ Node->Inode ];
371 VT_int_PutString(term, Buffer, Length);
374 size = term->Width*term->Height*4;
375 if( Offset > size ) {
376 Log_Notice("VTerm", "VT_Write: Offset (0x%llx) > FBSize (0x%x)",
381 if( Offset + Length > size ) {
382 Log_Notice("VTerm", "VT_Write: Offset+Length (0x%llx) > FBSize (0x%x)",
383 Offset+Length, size);
384 Length = size - Offset;
387 memcpy( (void*)((Uint)term->Buffer + (Uint)Offset), Buffer, Length );
389 if( Node->Inode == giVT_CurrentTerminal )
391 if( giVT_RealWidth > term->Width || giVT_RealHeight > term->Height )
394 x = Offset/4; y = x / term->Width; x %= term->Width;
395 w = Length/4+x; h = w / term->Width; w %= term->Width;
397 x += (giVT_RealWidth - term->Width) / 2;
398 y += (giVT_RealHeight - term->Height) / 2;
401 VFS_WriteAt( giVT_OutputDevHandle,
402 (x + y * giVT_RealWidth)*4,
406 Buffer = (void*)( (Uint)Buffer + term->Width*4 );
412 return VFS_WriteAt( giVT_OutputDevHandle, Offset, Length, Buffer );
416 case TERM_MODE_2DACCEL:
417 //case TERM_MODE_3DACCEL:
418 if( Node->Inode == giVT_CurrentTerminal )
420 VFS_Write( giVT_OutputDevHandle, Length, Buffer );
429 * \fn int VT_Terminal_IOCtl(tVFS_Node *Node, int Id, void *Data)
430 * \brief Call an IO Control on a virtual terminal
432 int VT_Terminal_IOCtl(tVFS_Node *Node, int Id, void *Data)
435 tVTerm *term = Node->ImplPtr;
436 ENTER("pNode iId pData", Node, Id, Data);
438 if(Id >= DRV_IOCTL_LOOKUP) {
439 // Only root can fiddle with graphics modes
440 // TODO: Remove this and replace with user ownership
441 if( Threads_GetUID() != 0 ) return -1;
448 LEAVE('i', DRV_TYPE_TERMINAL);
449 return DRV_TYPE_TERMINAL;
450 case DRV_IOCTL_IDENT:
451 memcpy(Data, "VT\0\0", 4);
454 case DRV_IOCTL_VERSION:
457 case DRV_IOCTL_LOOKUP:
461 // Get/Set the mode (and apply any changes)
462 case TERM_IOCTL_MODETYPE:
465 if( CheckMem(Data, sizeof(int)) == 0 ) {
469 Log_Log("VTerm", "VTerm %i mode set to %i", (int)Node->Inode, *iData);
471 // Update mode if needed
472 if(term->Mode != *iData)
473 VT_int_ChangeMode(term, *iData);
475 // Update the screen dimensions
476 if(Node->Inode == giVT_CurrentTerminal)
477 VT_SetTerminal( giVT_CurrentTerminal );
479 LEAVE('i', term->Mode);
482 // Get/set the terminal width
483 case TERM_IOCTL_WIDTH:
485 if( CheckMem(Data, sizeof(int)) == 0 ) {
489 term->Width = *iData;
491 Log("VT_Terminal_IOCtl - RETURN term->Width = %i", term->Width);
492 LEAVE('i', term->Width);
495 // Get/set the terminal height
496 case TERM_IOCTL_HEIGHT:
498 if( CheckMem(Data, sizeof(int)) == 0 ) {
502 term->Height = *iData;
504 Log("VT_Terminal_IOCtl - RETURN term->Height = %i", term->Height);
505 LEAVE('i', term->Height);
508 case TERM_IOCTL_FORCESHOW:
509 Log_Log("VTerm", "Thread %i forced VTerm %i to be shown",
510 Threads_GetTID(), (int)Node->Inode);
511 VT_SetTerminal( Node->Inode );
519 void VT_SetResolution(int Width, int Height)
521 tVideo_IOCtl_Mode mode = {0};
525 // Create the video mode
527 mode.height = Height;
532 VFS_IOCtl( giVT_OutputDevHandle, VIDEO_IOCTL_FINDMODE, &mode );
534 if( Width != mode.width || Height != mode.height )
537 "Selected resolution (%ix%i is not supported) by the device, using (%ix%i)",
538 giVT_RealWidth, giVT_RealHeight,
539 mode.width, mode.height
542 VFS_IOCtl( giVT_OutputDevHandle, VIDEO_IOCTL_GETSETMODE, &tmp );
544 // Resize text terminals if needed
545 if( giVT_RealWidth != mode.width || giVT_RealHeight != mode.height )
547 int newBufSize = (giVT_RealWidth/giVT_CharWidth)
548 *(giVT_RealHeight/giVT_CharHeight)
549 *(giVT_Scrollback+1);
551 // Resize the text terminals
552 giVT_RealWidth = mode.width;
553 giVT_RealHeight = mode.height;
554 for( i = 0; i < NUM_VTS; i ++ )
556 if( gVT_Terminals[i].Mode != TERM_MODE_TEXT ) continue;
558 gVT_Terminals[i].Text = realloc(
559 gVT_Terminals[i].Text,
560 newBufSize*sizeof(tVT_Char)
566 void VT_SetMode(int Mode)
568 VFS_IOCtl( giVT_OutputDevHandle, VIDEO_IOCTL_SETBUFFORMAT, &Mode );
572 * \fn void VT_SetTerminal(int ID)
573 * \brief Set the current terminal
575 void VT_SetTerminal(int ID)
577 // Update current terminal ID
578 Log_Log("VTerm", "Changed terminal from %i to %i", giVT_CurrentTerminal, ID);
579 giVT_CurrentTerminal = ID;
580 gpVT_CurTerm = &gVT_Terminals[ID];
583 if( gpVT_CurTerm->Mode == TERM_MODE_TEXT && !(gpVT_CurTerm->Flags & VT_FLAG_HIDECSR) )
585 tVideo_IOCtl_Pos pos;
586 pos.x = gpVT_CurTerm->WritePos % gpVT_CurTerm->Width;
587 pos.y = gpVT_CurTerm->WritePos / gpVT_CurTerm->Width;
588 VFS_IOCtl(giVT_OutputDevHandle, VIDEO_IOCTL_SETCURSOR, &pos);
591 if( gpVT_CurTerm->Mode == TERM_MODE_TEXT )
592 VT_SetMode( VIDEO_BUFFMT_TEXT );
594 VT_SetMode( VIDEO_BUFFMT_FRAMEBUFFER );
597 VT_int_UpdateScreen( &gVT_Terminals[ ID ], 1 );
601 * \fn void VT_KBCallBack(Uint32 Codepoint)
602 * \brief Called on keyboard interrupt
603 * \param Codepoint Pseudo-UTF32 character
605 * Handles a key press and sends the key code to the user's buffer.
606 * If the code creates a kernel-magic sequence, it is not passed to the
607 * user and is handled in-kernel.
609 void VT_KBCallBack(Uint32 Codepoint)
611 tVTerm *term = &gVT_Terminals[giVT_CurrentTerminal];
613 // How the hell did we get a Codepoint of zero?
614 if(Codepoint == 0) return;
617 if( Codepoint & 0x80000000 )
619 Codepoint &= 0x7FFFFFFF;
623 case KEY_RSHIFT: gbVT_CtrlDown = 0; break;
624 case KEY_LSHIFT: gbVT_AltDown = 0; break;
642 case KEY_RSHIFT: gbVT_CtrlDown = 1; break;
643 case KEY_LSHIFT: gbVT_AltDown = 1; break;
657 if(!gbVT_AltDown || !gbVT_CtrlDown)
662 case KEY_F1: VT_SetTerminal(0); return;
663 case KEY_F2: VT_SetTerminal(1); return;
664 case KEY_F3: VT_SetTerminal(2); return;
665 case KEY_F4: VT_SetTerminal(3); return;
666 case KEY_F5: VT_SetTerminal(4); return;
667 case KEY_F6: VT_SetTerminal(5); return;
668 case KEY_F7: VT_SetTerminal(6); return;
669 case KEY_F8: VT_SetTerminal(7); return;
670 case KEY_F9: VT_SetTerminal(8); return;
671 case KEY_F10: VT_SetTerminal(9); return;
672 case KEY_F11: VT_SetTerminal(10); return;
673 case KEY_F12: VT_SetTerminal(11); return;
675 if( gpVT_CurTerm->ViewPos > gpVT_CurTerm->Width )
676 gpVT_CurTerm->ViewPos -= gpVT_CurTerm->Width;
678 gpVT_CurTerm->ViewPos = 0;
681 if( gpVT_CurTerm->ViewPos < gpVT_CurTerm->Width*gpVT_CurTerm->Height*(giVT_Scrollback-1) )
682 gpVT_CurTerm->ViewPos += gpVT_CurTerm->Width;
684 gpVT_CurTerm->ViewPos = gpVT_CurTerm->Width*gpVT_CurTerm->Height*(giVT_Scrollback-1);
690 if(term->Mode == TERM_MODE_TEXT)
695 // Ignore Modifer Keys
696 if(Codepoint > KEY_MODIFIERS) return;
698 // Get UTF-8/ANSI Encoding
702 buf[0] = '\x1B'; buf[1] = '['; buf[2] = 'D';
706 buf[0] = '\x1B'; buf[1] = '['; buf[2] = 'C';
710 buf[0] = '\x1B'; buf[1] = '['; buf[2] = 'A';
714 buf[0] = '\x1B'; buf[1] = '['; buf[2] = 'B';
719 buf[0] = '\x1B'; buf[1] = '['; buf[2] = '5'; // Some overline also
720 //len = 4; // Commented out until I'm sure
726 // Attempt to encode in UTF-8
728 len = WriteUTF8( buf, Codepoint );
730 Warning("Codepoint (%x) is unrepresentable in UTF-8", Codepoint);
736 // Unprintable / Don't Pass
741 if( MAX_INPUT_CHARS8 - term->InputWrite >= len )
742 memcpy( &term->InputBuffer[term->InputWrite], buf, len );
744 memcpy( &term->InputBuffer[term->InputWrite], buf, MAX_INPUT_CHARS8 - term->InputWrite );
745 memcpy( &term->InputBuffer[0], buf, len - (MAX_INPUT_CHARS8 - term->InputWrite) );
747 // Roll the buffer over
748 term->InputWrite += len;
749 term->InputWrite %= MAX_INPUT_CHARS8;
750 if( (term->InputWrite - term->InputRead + MAX_INPUT_CHARS8)%MAX_INPUT_CHARS8 < len ) {
751 term->InputRead = term->InputWrite + 1;
752 term->InputRead %= MAX_INPUT_CHARS8;
758 // Encode the raw UTF-32 Key
759 ((Uint32*)term->InputBuffer)[ term->InputWrite ] = Codepoint;
761 term->InputWrite %= MAX_INPUT_CHARS32;
762 if(term->InputRead == term->InputWrite) {
764 term->InputRead %= MAX_INPUT_CHARS32;
770 * \fn void VT_int_ClearLine(tVTerm *Term, int Num)
771 * \brief Clears a line in a virtual terminal
773 void VT_int_ClearLine(tVTerm *Term, int Num)
776 //ENTER("pTerm iNum", Term, Num);
777 for( i = Term->Width; i--; )
779 Term->Text[ Num*Term->Width + i ].Ch = 0;
780 Term->Text[ Num*Term->Width + i ].Colour = Term->CurColour;
786 * \fn int VT_int_ParseEscape(tVTerm *Term, char *Buffer)
787 * \brief Parses a VT100 Escape code
789 int VT_int_ParseEscape(tVTerm *Term, char *Buffer)
794 int args[6] = {0,0,0,0};
802 if( '0' <= c && c <= '9' )
805 while('0' <= c && c <= '9') {
815 // Get string (what does this do?)
823 //Log_Debug("VTerm", "argc = %i", argc);
826 if( ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z'))
832 if(argc == 1) tmp = args[0];
835 if( Term->WritePos-(tmp-1) % Term->Width == 0 )
836 Term->WritePos -= Term->WritePos % Term->Width;
838 Term->WritePos -= tmp;
843 if(argc == 1) tmp = args[0];
845 if( (Term->WritePos + tmp) % Term->Width == 0 ) {
846 Term->WritePos -= Term->WritePos % Term->Width;
847 Term->WritePos += Term->Width - 1;
849 Term->WritePos += tmp;
859 int i = Term->Height * (giVT_Scrollback + 1);
860 while( i-- ) VT_int_ClearLine(Term, i);
863 VT_int_UpdateScreen(Term, 1);
873 if( 0 <= args[argc] && args[argc] <= 8)
877 case 0: Term->CurColour = DEFAULT_COLOUR; break; // Reset
878 case 1: Term->CurColour |= 0x80000000; break; // Bright
879 case 2: Term->CurColour &= ~0x80000000; break; // Dim
883 else if(30 <= args[argc] && args[argc] <= 37) {
884 Term->CurColour &= 0xF000FFFF;
885 Term->CurColour |= (Uint32)caVT100Colours[ args[argc]-30+(Term->CurColour>>28) ] << 16;
888 else if(40 <= args[argc] && args[argc] <= 47) {
889 Term->CurColour &= 0xFFFF8000;
890 Term->CurColour |= caVT100Colours[ args[argc]-40+((Term->CurColour>>12)&15) ];
895 Log_Warning("VTerm", "Unknown control sequence");
904 //Log_Debug("VTerm", "j = %i, Buffer = '%s'", j, Buffer);
909 * \fn void VT_int_PutString(tVTerm *Term, Uint8 *Buffer, Uint Count)
910 * \brief Print a string to the Virtual Terminal
912 void VT_int_PutString(tVTerm *Term, Uint8 *Buffer, Uint Count)
918 for( i = 0; i < Count; i++ )
920 // Handle escape sequences
921 if( Buffer[i] == 0x1B )
924 i += VT_int_ParseEscape(Term, (char*)&Buffer[i]) - 1;
928 // Fast check for non UTF-8
929 if( Buffer[i] < 128 ) // Plain ASCII
930 VT_int_PutChar(Term, Buffer[i]);
932 i += ReadUTF8(&Buffer[i], &val) - 1;
933 VT_int_PutChar(Term, val);
937 VT_int_UpdateScreen( Term, 0 );
940 if( Term == gpVT_CurTerm && !(Term->Flags & VT_FLAG_HIDECSR) )
942 tVideo_IOCtl_Pos pos;
943 pos.x = Term->WritePos % Term->Width;
944 pos.y = Term->WritePos / Term->Width;
945 VFS_IOCtl(giVT_OutputDevHandle, VIDEO_IOCTL_SETCURSOR, &pos);
950 * \fn void VT_int_PutChar(tVTerm *Term, Uint32 Ch)
951 * \brief Write a single character to a VTerm
953 void VT_int_PutChar(tVTerm *Term, Uint32 Ch)
959 case '\0': return; // Ignore NULL byte
961 VT_int_UpdateScreen( Term, 0 ); // Update the line before newlining
962 Term->WritePos += Term->Width;
964 Term->WritePos -= Term->WritePos % Term->Width;
969 Term->Text[ Term->WritePos ].Ch = '\0';
970 Term->Text[ Term->WritePos ].Colour = Term->CurColour;
972 } while(Term->WritePos & 7);
976 // Backspace is invalid at Offset 0
977 if(Term->WritePos == 0) break;
981 if(Term->Text[ Term->WritePos ].Ch != '\0') {
982 Term->Text[ Term->WritePos ].Ch = 0;
983 Term->Text[ Term->WritePos ].Colour = Term->CurColour;
987 i = 7; // Limit it to 8
989 Term->Text[ Term->WritePos ].Ch = 0;
990 Term->Text[ Term->WritePos ].Colour = Term->CurColour;
992 } while(Term->WritePos && i-- && Term->Text[ Term->WritePos ].Ch == '\0');
993 if(Term->Text[ Term->WritePos ].Ch != '\0')
998 Term->Text[ Term->WritePos ].Ch = Ch;
999 Term->Text[ Term->WritePos ].Colour = Term->CurColour;
1005 // - Check if we need to scroll the entire scrollback buffer
1006 if(Term->WritePos >= Term->Width*Term->Height*(giVT_Scrollback+1))
1010 //Debug("Scrolling entire buffer");
1013 Term->WritePos -= Term->Width;
1015 VT_int_UpdateScreen( Term, 0 );
1017 // Update view position
1018 base = Term->Width*Term->Height*(giVT_Scrollback);
1019 if(Term->ViewPos < base)
1020 Term->ViewPos += Term->Width;
1021 if(Term->ViewPos > base)
1022 Term->ViewPos = base;
1024 // Scroll terminal cache
1025 base = Term->Width*(Term->Height*(giVT_Scrollback+1)-1);
1028 &Term->Text[Term->Width],
1029 (Term->Width*Term->Height*(giVT_Scrollback+1)-Term->Width)*sizeof(tVT_Char)
1033 for( i = 0; i < Term->Width; i ++ )
1035 Term->Text[ base + i ].Ch = 0;
1036 Term->Text[ base + i ].Colour = Term->CurColour;
1039 VT_int_ScrollFramebuffer( Term );
1040 VT_int_UpdateScreen( Term, 0 );
1042 // Ok, so we only need to scroll the screen
1043 else if(Term->WritePos >= Term->ViewPos + Term->Width*Term->Height)
1045 //Debug("Term->WritePos (%i) >= %i",
1047 // Term->ViewPos + Term->Width*Term->Height
1049 //Debug("Scrolling screen only");
1051 // Update the last line
1052 Term->WritePos -= Term->Width;
1053 VT_int_UpdateScreen( Term, 0 );
1054 Term->WritePos += Term->Width;
1057 Term->ViewPos += Term->Width;
1058 //Debug("Term->ViewPos = %i", Term->ViewPos);
1059 VT_int_ScrollFramebuffer( Term );
1060 VT_int_UpdateScreen( Term, 0 );
1067 * \fn void VT_int_ScrollFramebuffer( tVTerm *Term )
1068 * \note Scrolls the framebuffer by 1 text line
1070 void VT_int_ScrollFramebuffer( tVTerm *Term )
1080 // Only update if this is the current terminal
1081 if( Term != gpVT_CurTerm ) return;
1083 // Switch to 2D Command Stream
1084 tmp = VIDEO_BUFFMT_2DSTREAM;
1085 VFS_IOCtl(giVT_OutputDevHandle, VIDEO_IOCTL_SETBUFFORMAT, &tmp);
1087 // BLIT from 0,0 to 0,giVT_CharHeight
1088 buf.Op = VIDEO_2DOP_BLIT;
1089 buf.DstX = 0; buf.DstY = 0;
1090 buf.SrcX = 0; buf.SrcY = giVT_CharHeight;
1091 buf.W = Term->Width * giVT_CharWidth;
1092 buf.H = (Term->Height-1) * giVT_CharHeight;
1093 VFS_WriteAt(giVT_OutputDevHandle, 0, sizeof(buf), &buf);
1095 // Restore old mode (this function is only called during text mode)
1096 tmp = VIDEO_BUFFMT_TEXT;
1097 VFS_IOCtl(giVT_OutputDevHandle, VIDEO_IOCTL_SETBUFFORMAT, &tmp);
1101 * \fn void VT_int_UpdateScreen( tVTerm *Term, int UpdateAll )
1102 * \brief Updates the video framebuffer
1104 void VT_int_UpdateScreen( tVTerm *Term, int UpdateAll )
1106 // Only update if this is the current terminal
1107 if( Term != gpVT_CurTerm ) return;
1109 switch( Term->Mode )
1111 case TERM_MODE_TEXT:
1112 // Re copy the entire screen?
1115 giVT_OutputDevHandle,
1117 Term->Width*Term->Height*sizeof(tVT_Char),
1118 &Term->Text[Term->ViewPos]
1121 // Only copy the current line
1123 int pos = Term->WritePos - Term->WritePos % Term->Width;
1125 giVT_OutputDevHandle,
1126 (pos - Term->ViewPos)*sizeof(tVT_Char),
1127 Term->Width*sizeof(tVT_Char),
1134 giVT_OutputDevHandle,
1136 Term->Width*Term->Height*sizeof(Uint32),
1144 * \fn void VT_int_ChangeMode(tVTerm *Term, int NewMode)
1145 * \brief Change the mode of a VTerm
1147 void VT_int_ChangeMode(tVTerm *Term, int NewMode)
1151 case TERM_MODE_TEXT:
1152 Log_Log("VTerm", "Set VT %p to text mode", Term);
1154 Term->Text = calloc( Term->Width*Term->Height*(giVT_Scrollback+1), sizeof(tVT_Char) );
1157 Log_Log("VTerm", "Set VT %p to framebuffer mode (%ix%i)", Term,
1158 Term->Width, Term->Height);
1160 Term->Buffer = calloc( Term->Width*Term->Height, sizeof(Uint32) );
1161 Log_Debug("VTerm", "Term->Buffer = %p", Term->Buffer);
1163 //case TERM_MODE_2DACCEL:
1164 //case TERM_MODE_3DACCEL:
1168 Term->Mode = NewMode;
1174 #define MONOSPACE_FONT 10816
1176 #if MONOSPACE_FONT == 10808 // 8x8
1177 # include "vterm_font_8x8.h"
1178 #elif MONOSPACE_FONT == 10816 // 8x16
1179 # include "vterm_font_8x16.h"
1182 // === PROTOTYPES ===
1183 Uint8 *VT_Font_GetChar(Uint32 Codepoint);
1186 int giVT_CharWidth = FONT_WIDTH;
1187 int giVT_CharHeight = FONT_HEIGHT;
1191 * \fn void VT_Font_Render(Uint32 Codepoint, void *Buffer, int Pitch, Uint32 BGC, Uint32 FGC)
1192 * \brief Render a font character
1194 void VT_Font_Render(Uint32 Codepoint, void *Buffer, int Pitch, Uint32 BGC, Uint32 FGC)
1197 Uint32 *buf = Buffer;
1200 font = VT_Font_GetChar(Codepoint);
1202 for(y = 0; y < FONT_HEIGHT; y ++)
1204 for(x = 0; x < FONT_WIDTH; x ++)
1206 if(*font & (1 << (FONT_WIDTH-x-1)))
1217 * \fn Uint32 VT_Colour12to24(Uint16 Col12)
1220 Uint32 VT_Colour12to24(Uint16 Col12)
1225 ret = (tmp << 0) | (tmp << 4);
1226 tmp = (Col12 & 0xF0) >> 4;
1227 ret |= (tmp << 8) | (tmp << 12);
1228 tmp = (Col12 & 0xF00) >> 8;
1229 ret |= (tmp << 16) | (tmp << 20);
1234 * \fn Uint8 *VT_Font_GetChar(Uint32 Codepoint)
1235 * \brief Gets an index into the font array given a Unicode Codepoint
1236 * \note See http://en.wikipedia.org/wiki/CP437
1238 Uint8 *VT_Font_GetChar(Uint32 Codepoint)
1242 return &VTermFont[Codepoint*FONT_HEIGHT];
1245 case 0xC7: index = 128; break; // Ç
1246 case 0xFC: index = 129; break; // ü
1247 case 0xE9: index = 130; break; // é
1248 case 0xE2: index = 131; break; // â
1249 case 0xE4: index = 132; break; // ä
1250 case 0xE0: index = 133; break; // à
1251 case 0xE5: index = 134; break; // å
1252 case 0xE7: index = 135; break; // ç
1253 case 0xEA: index = 136; break; // ê
1254 case 0xEB: index = 137; break; // ë
1255 case 0xE8: index = 138; break; // è
1256 case 0xEF: index = 139; break; // ï
1257 case 0xEE: index = 140; break; // î
1258 case 0xEC: index = 141; break; // ì
1259 case 0xC4: index = 142; break; // Ä
1260 case 0xC5: index = 143; break; // Å
1263 return &VTermFont[index*FONT_HEIGHT];
1266 EXPORTAS(&giVT_CharWidth, giVT_CharWidth);
1267 EXPORTAS(&giVT_CharHeight, giVT_CharHeight);
1268 EXPORT(VT_Font_Render);
1269 EXPORT(VT_Colour12to24);