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 DEFAULT_COLOUR (VT_COL_BLACK|(0xAAA<<16))
29 #define VT_FLAG_HIDECSR 0x01
30 #define VT_FLAG_HASFB 0x10 //!< Set if the VTerm has requested the Framebuffer
33 VT_INMODE_TEXT8, // UTF-8 Text Mode (VT100 Emulation)
34 VT_INMODE_TEXT32, // UTF-32 Text Mode (Acess Native)
40 int Mode; //!< Current Mode (see ::eTplTerminal_Modes)
41 int Flags; //!< Flags (see VT_FLAG_*)
44 short NewWidth; //!< Un-applied dimensions (Width)
45 short NewHeight; //!< Un-applied dimensions (Height)
46 short Width; //!< Virtual Width
47 short Height; //!< Virtual Height
48 short TextWidth; //!< Text Virtual Width
49 short TextHeight; //!< Text Virtual Height
51 int ViewPos; //!< View Buffer Offset (Text Only)
52 int WritePos; //!< Write Buffer Offset (Text Only)
53 Uint32 CurColour; //!< Current Text Colour
55 int InputRead; //!< Input buffer read position
56 int InputWrite; //!< Input buffer write position
57 char InputBuffer[MAX_INPUT_CHARS8];
62 char Name[2]; //!< Name of the terminal
67 extern void Debug_SetKTerminal(char *File);
70 int VT_Install(char **Arguments);
71 void VT_InitOutput(void);
72 void VT_InitInput(void);
73 char *VT_ReadDir(tVFS_Node *Node, int Pos);
74 tVFS_Node *VT_FindDir(tVFS_Node *Node, char *Name);
75 int VT_Root_IOCtl(tVFS_Node *Node, int Id, void *Data);
76 Uint64 VT_Read(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer);
77 Uint64 VT_Write(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer);
78 int VT_Terminal_IOCtl(tVFS_Node *Node, int Id, void *Data);
79 void VT_SetResolution(int Width, int Height);
80 void VT_SetMode(int Mode);
81 void VT_SetTerminal(int ID);
82 void VT_KBCallBack(Uint32 Codepoint);
83 void VT_int_PutString(tVTerm *Term, Uint8 *Buffer, Uint Count);
84 int VT_int_ParseEscape(tVTerm *Term, char *Buffer);
85 void VT_int_PutChar(tVTerm *Term, Uint32 Ch);
86 void VT_int_ScrollFramebuffer( tVTerm *Term );
87 void VT_int_UpdateScreen( tVTerm *Term, int UpdateAll );
88 void VT_int_ChangeMode(tVTerm *Term, int NewMode, int NewWidth, int NewHeight);
91 const Uint16 caVT100Colours[] = {
92 // Black, Red, Green, Yellow, Blue, Purple, Cyan, Gray
93 // Same again, but bright
94 VT_COL_BLACK, 0x700, 0x070, 0x770, 0x007, 0x707, 0x077, 0xAAA,
95 VT_COL_GREY, 0xF00, 0x0F0, 0xFF0, 0x00F, 0xF0F, 0x0FF, VT_COL_WHITE
99 MODULE_DEFINE(0, VERSION, VTerm, VT_Install, NULL, DEFAULT_OUTPUT, DEFAULT_INPUT, NULL);
100 tDevFS_Driver gVT_DrvInfo = {
103 .Flags = VFS_FFLAG_DIRECTORY,
107 .ReadDir = VT_ReadDir,
108 .FindDir = VT_FindDir,
109 .IOCtl = VT_Root_IOCtl
113 tVTerm gVT_Terminals[NUM_VTS];
114 int giVT_CurrentTerminal = 0;
115 tVTerm *gpVT_CurTerm = &gVT_Terminals[0];
116 // --- Video State ---
117 short giVT_RealWidth = DEFAULT_WIDTH; //!< Screen Width
118 short giVT_RealHeight = DEFAULT_HEIGHT; //!< Screen Height
119 int giVT_Scrollback = DEFAULT_SCROLLBACK;
120 // --- Driver Handles ---
121 char *gsVT_OutputDevice = NULL;
122 char *gsVT_InputDevice = NULL;
123 int giVT_OutputDevHandle = -2;
124 int giVT_InputDevHandle = -2;
125 // --- Key States --- (Used for VT Switching/Magic Combos)
126 int gbVT_CtrlDown = 0;
127 int gbVT_AltDown = 0;
128 int gbVT_SysrqDown = 0;
132 * \fn int VT_Install(char **Arguments)
133 * \brief Installs the Virtual Terminal Driver
135 int VT_Install(char **Arguments)
142 char **args = Arguments;
143 char *arg, *opt, *val;
144 for( ; (arg = *args); args++ )
146 Log_Debug("VTerm", "Argument '%s'", arg);
148 val = arg + strpos(arg, '='); *val++ = '\0';
150 if( strcmp(opt, "Video") == 0 ) {
151 if(gsVT_OutputDevice) free(gsVT_OutputDevice);
152 gsVT_OutputDevice = strdup(val);
154 else if( strcmp(opt, "Input") == 0 ) {
155 if(gsVT_InputDevice) free(gsVT_InputDevice);
156 gsVT_InputDevice = strdup(val);
158 else if( strcmp(opt, "Width") == 0 ) {
159 giVT_RealWidth = atoi( val );
161 else if( strcmp(opt, "Height") == 0 ) {
162 giVT_RealHeight = atoi( val );
164 else if( strcmp(opt, "Scrollback") == 0 ) {
165 giVT_Scrollback = atoi( val );
171 if(!gsVT_OutputDevice) gsVT_OutputDevice = "/Devices/"DEFAULT_OUTPUT;
172 if(!gsVT_InputDevice) gsVT_InputDevice = "/Devices/"DEFAULT_INPUT;
174 Log_Log("VTerm", "Using '%s' as output", gsVT_OutputDevice);
175 Log_Log("VTerm", "Using '%s' as input", gsVT_InputDevice);
178 for( i = 0; i < NUM_VTS; i++ )
180 gVT_Terminals[i].Mode = TERM_MODE_TEXT;
181 gVT_Terminals[i].Flags = 0;
182 gVT_Terminals[i].CurColour = DEFAULT_COLOUR;
183 gVT_Terminals[i].WritePos = 0;
184 gVT_Terminals[i].ViewPos = 0;
187 VT_int_ChangeMode( &gVT_Terminals[i],
188 TERM_MODE_TEXT, giVT_RealWidth, giVT_RealHeight );
190 gVT_Terminals[i].Name[0] = '0'+i;
191 gVT_Terminals[i].Name[1] = '\0';
192 gVT_Terminals[i].Node.Inode = i;
193 gVT_Terminals[i].Node.ImplPtr = &gVT_Terminals[i];
194 gVT_Terminals[i].Node.NumACLs = 0; // Only root can open virtual terminals
196 gVT_Terminals[i].Node.Read = VT_Read;
197 gVT_Terminals[i].Node.Write = VT_Write;
198 gVT_Terminals[i].Node.IOCtl = VT_Terminal_IOCtl;
202 DevFS_AddDevice( &gVT_DrvInfo );
207 // Set kernel output to VT0
208 Debug_SetKTerminal("/Devices/VTerm/0");
210 Log_Log("VTerm", "Returning %i", MODULE_ERR_OK);
211 return MODULE_ERR_OK;
215 * \fn void VT_InitOutput()
216 * \brief Initialise Video Output
220 giVT_OutputDevHandle = VFS_Open(gsVT_OutputDevice, VFS_OPENFLAG_WRITE);
221 if(giVT_InputDevHandle == -1) {
222 Log_Warning("VTerm", "Oh F**k, I can't open the video device '%s'", gsVT_OutputDevice);
225 VT_SetResolution( giVT_RealWidth, giVT_RealHeight );
227 VT_SetMode( VIDEO_BUFFMT_TEXT );
231 * \fn void VT_InitInput()
232 * \brief Initialises the input
236 giVT_InputDevHandle = VFS_Open(gsVT_InputDevice, VFS_OPENFLAG_READ);
237 if(giVT_InputDevHandle == -1) return ;
238 VFS_IOCtl(giVT_InputDevHandle, KB_IOCTL_SETCALLBACK, VT_KBCallBack);
242 * \brief Set the video resolution
243 * \param Width New screen width
244 * \param Height New screen height
246 void VT_SetResolution(int Width, int Height)
248 tVideo_IOCtl_Mode mode = {0};
252 // Create the video mode
254 mode.height = Height;
259 VFS_IOCtl( giVT_OutputDevHandle, VIDEO_IOCTL_FINDMODE, &mode );
261 if( Width != mode.width || Height != mode.height )
264 "Selected resolution (%ix%i is not supported) by the device, using (%ix%i)",
265 giVT_RealWidth, giVT_RealHeight,
266 mode.width, mode.height
269 VFS_IOCtl( giVT_OutputDevHandle, VIDEO_IOCTL_GETSETMODE, &tmp );
271 // Resize text terminals if needed
272 if( giVT_RealWidth != mode.width || giVT_RealHeight != mode.height )
274 int newBufSize = (giVT_RealWidth/giVT_CharWidth)
275 *(giVT_RealHeight/giVT_CharHeight)
276 *(giVT_Scrollback+1);
278 // Resize the text terminals
279 giVT_RealWidth = mode.width;
280 giVT_RealHeight = mode.height;
281 for( i = 0; i < NUM_VTS; i ++ )
283 if( gVT_Terminals[i].Mode != TERM_MODE_TEXT ) continue;
285 gVT_Terminals[i].Text = realloc(
286 gVT_Terminals[i].Text,
287 newBufSize*sizeof(tVT_Char)
294 * \brief Set video output buffer mode
296 void VT_SetMode(int Mode)
298 VFS_IOCtl( giVT_OutputDevHandle, VIDEO_IOCTL_SETBUFFORMAT, &Mode );
302 * \fn char *VT_ReadDir(tVFS_Node *Node, int Pos)
303 * \brief Read from the VTerm Directory
305 char *VT_ReadDir(tVFS_Node *Node, int Pos)
307 if(Pos < 0) return NULL;
308 if(Pos >= NUM_VTS) return NULL;
309 return strdup( gVT_Terminals[Pos].Name );
313 * \fn tVFS_Node *VT_FindDir(tVFS_Node *Node, char *Name)
314 * \brief Find an item in the VTerm directory
315 * \param Node Root node
316 * \param Name Name (number) of the terminal
318 tVFS_Node *VT_FindDir(tVFS_Node *Node, char *Name)
322 ENTER("pNode sName", Node, Name);
324 // Open the input and output files if needed
325 if(giVT_OutputDevHandle == -2) VT_InitOutput();
326 if(giVT_InputDevHandle == -2) VT_InitInput();
329 if(Name[0] < '0' || Name[0] > '9' || Name[1] != '\0') {
340 LEAVE('p', &gVT_Terminals[num].Node);
341 return &gVT_Terminals[num].Node;
345 * \fn int VT_Root_IOCtl(tVFS_Node *Node, int Id, void *Data)
346 * \brief Control the VTerm Driver
348 int VT_Root_IOCtl(tVFS_Node *Node, int Id, void *Data)
353 case DRV_IOCTL_TYPE: return DRV_TYPE_MISC;
354 case DRV_IOCTL_IDENT: memcpy(Data, "VT\0\0", 4); return 0;
355 case DRV_IOCTL_VERSION: return VERSION;
356 case DRV_IOCTL_LOOKUP: return 0;
358 case 4: // Get Video Driver
359 if(Data) strcpy(Data, gsVT_OutputDevice);
360 return strlen(gsVT_OutputDevice);
362 case 5: // Set Video Driver
363 if(!Data) return -EINVAL;
364 if(Threads_GetUID() != 0) return -EACCES;
368 free(gsVT_OutputDevice);
370 gsVT_OutputDevice = malloc(len+1);
371 strcpy(gsVT_OutputDevice, Data);
373 VFS_Close(giVT_OutputDevHandle);
374 giVT_OutputDevHandle = -1;
383 * \fn Uint64 VT_Read(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
384 * \brief Read from a virtual terminal
386 Uint64 VT_Read(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
389 tVTerm *term = &gVT_Terminals[ Node->Inode ];
391 // Check current mode
398 while(term->InputRead == term->InputWrite) Threads_Yield();
400 ((char*)Buffer)[pos] = term->InputBuffer[term->InputRead];
403 term->InputRead %= MAX_INPUT_CHARS8;
412 while(term->InputRead == term->InputWrite) Threads_Yield();
413 ((Uint32*)Buffer)[pos] = ((Uint32*)term->InputBuffer)[term->InputRead];
416 term->InputRead %= MAX_INPUT_CHARS32;
424 * \fn Uint64 VT_Write(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
425 * \brief Write to a virtual terminal
427 Uint64 VT_Write(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
429 tVTerm *term = &gVT_Terminals[ Node->Inode ];
437 VT_int_PutString(term, Buffer, Length);
443 size = term->Width*term->Height*4;
444 if( Offset > size ) {
445 Log_Notice("VTerm", "VT_Write: Offset (0x%llx) > FBSize (0x%x)",
449 if( Offset + Length > size ) {
450 Log_Notice("VTerm", "VT_Write: Offset+Length (0x%llx) > FBSize (0x%x)",
451 Offset+Length, size);
452 Length = size - Offset;
455 // Copy to the local cache
456 memcpy( (void*)((Uint)term->Buffer + (Uint)Offset), Buffer, Length );
458 // Update screen if needed
459 if( Node->Inode == giVT_CurrentTerminal )
461 // Fill entire screen?
462 if( giVT_RealWidth > term->Width || giVT_RealHeight > term->Height )
464 // No? :( Well, just center it
466 x = Offset/4; y = x / term->Width; x %= term->Width;
467 w = Length/4+x; h = w / term->Width; w %= term->Width;
469 x += (giVT_RealWidth - term->Width) / 2;
470 y += (giVT_RealHeight - term->Height) / 2;
473 VFS_WriteAt( giVT_OutputDevHandle,
474 (x + y * giVT_RealWidth)*4,
478 Buffer = (void*)( (Uint)Buffer + term->Width*4 );
484 return VFS_WriteAt( giVT_OutputDevHandle, Offset, Length, Buffer );
487 // Just pass on (for now)
488 // TODO: Handle locally too to ensure no information is lost on
489 // VT Switch (and to isolate terminals from each other)
490 case TERM_MODE_2DACCEL:
491 //case TERM_MODE_3DACCEL:
492 if( Node->Inode == giVT_CurrentTerminal )
494 VFS_Write( giVT_OutputDevHandle, Length, Buffer );
503 * \fn int VT_Terminal_IOCtl(tVFS_Node *Node, int Id, void *Data)
504 * \brief Call an IO Control on a virtual terminal
506 int VT_Terminal_IOCtl(tVFS_Node *Node, int Id, void *Data)
510 tVTerm *term = Node->ImplPtr;
511 ENTER("pNode iId pData", Node, Id, Data);
513 if(Id >= DRV_IOCTL_LOOKUP) {
514 // Only root can fiddle with graphics modes
515 // TODO: Remove this and replace with user ownership
516 if( Threads_GetUID() != 0 ) return -1;
523 LEAVE('i', DRV_TYPE_TERMINAL);
524 return DRV_TYPE_TERMINAL;
525 case DRV_IOCTL_IDENT:
526 memcpy(Data, "VT\0\0", 4);
529 case DRV_IOCTL_VERSION:
532 case DRV_IOCTL_LOOKUP:
536 // Get/Set the mode (and apply any changes)
537 case TERM_IOCTL_MODETYPE:
540 if( CheckMem(Data, sizeof(int)) == 0 ) {
544 Log_Log("VTerm", "VTerm %i mode set to %i", (int)Node->Inode, *iData);
546 // Update mode if needed
547 if( term->Mode != *iData
551 // Adjust for text mode
552 if( *iData == TERM_MODE_TEXT ) {
553 term->NewHeight *= giVT_CharHeight;
554 term->NewWidth *= giVT_CharWidth;
556 // Fill unchanged dimensions
557 if(term->NewHeight == 0) term->NewHeight = term->Height;
558 if(term->NewWidth == 0) term->NewWidth = term->Width;
560 VT_int_ChangeMode(term, *iData, term->NewWidth, term->NewHeight);
561 // Clear unapplied dimensions
566 // Update the screen dimensions
567 if(Node->Inode == giVT_CurrentTerminal)
568 VT_SetTerminal( giVT_CurrentTerminal );
570 LEAVE('i', term->Mode);
573 // Get/set the terminal width
574 case TERM_IOCTL_WIDTH:
576 if( CheckMem(Data, sizeof(int)) == 0 ) {
580 term->NewWidth = *iData;
583 ret = term->NewWidth;
584 else if( term->Mode == TERM_MODE_TEXT )
585 ret = term->TextWidth;
591 // Get/set the terminal height
592 case TERM_IOCTL_HEIGHT:
594 if( CheckMem(Data, sizeof(int)) == 0 ) {
598 term->NewHeight = *iData;
600 if( term->NewHeight )
601 ret = term->NewHeight;
602 else if( term->Mode == TERM_MODE_TEXT )
603 ret = term->TextHeight = *iData;
609 case TERM_IOCTL_FORCESHOW:
610 Log_Log("VTerm", "Thread %i forced VTerm %i to be shown",
611 Threads_GetTID(), (int)Node->Inode);
612 VT_SetTerminal( Node->Inode );
621 * \fn void VT_SetTerminal(int ID)
622 * \brief Set the current terminal
624 void VT_SetTerminal(int ID)
626 // Update current terminal ID
627 Log_Log("VTerm", "Changed terminal from %i to %i", giVT_CurrentTerminal, ID);
628 giVT_CurrentTerminal = ID;
629 gpVT_CurTerm = &gVT_Terminals[ID];
632 if( gpVT_CurTerm->Mode == TERM_MODE_TEXT && !(gpVT_CurTerm->Flags & VT_FLAG_HIDECSR) )
634 tVideo_IOCtl_Pos pos;
635 pos.x = (gpVT_CurTerm->WritePos - gpVT_CurTerm->ViewPos) % gpVT_CurTerm->TextWidth;
636 pos.y = (gpVT_CurTerm->WritePos - gpVT_CurTerm->ViewPos) / gpVT_CurTerm->TextWidth;
637 VFS_IOCtl(giVT_OutputDevHandle, VIDEO_IOCTL_SETCURSOR, &pos);
640 if( gpVT_CurTerm->Mode == TERM_MODE_TEXT )
641 VT_SetMode( VIDEO_BUFFMT_TEXT );
643 VT_SetMode( VIDEO_BUFFMT_FRAMEBUFFER );
646 VT_int_UpdateScreen( &gVT_Terminals[ ID ], 1 );
650 * \fn void VT_KBCallBack(Uint32 Codepoint)
651 * \brief Called on keyboard interrupt
652 * \param Codepoint Pseudo-UTF32 character
654 * Handles a key press and sends the key code to the user's buffer.
655 * If the code creates a kernel-magic sequence, it is not passed to the
656 * user and is handled in-kernel.
658 void VT_KBCallBack(Uint32 Codepoint)
660 tVTerm *term = gpVT_CurTerm;
662 // How the hell did we get a codepoint of zero?
663 if(Codepoint == 0) return;
666 if( Codepoint & 0x80000000 )
668 Codepoint &= 0x7FFFFFFF;
672 case KEY_RSHIFT: gbVT_CtrlDown = 0; break;
673 case KEY_LSHIFT: gbVT_AltDown = 0; break;
675 case KEY_LALT: gbVT_AltDown &= ~1; break;
676 case KEY_RALT: gbVT_AltDown &= ~2; break;
677 case KEY_LCTRL: gbVT_CtrlDown &= ~1 break;
678 case KEY_RCTRL: gbVT_CtrlDown &= ~2; break;
686 #if !USE_CTRL_ALT // HACK: Use both shifts instead of Ctrl-Alt
687 case KEY_RSHIFT: gbVT_CtrlDown = 1; break;
688 case KEY_LSHIFT: gbVT_AltDown = 1; break;
690 case KEY_LALT: gbVT_AltDown |= 1; break;
691 case KEY_RALT: gbVT_AltDown |= 2; break;
692 case KEY_LCTRL: gbVT_CtrlDown |= 1; break;
693 case KEY_RCTRL: gbVT_CtrlDown |= 2; break;
697 if(!gbVT_AltDown || !gbVT_CtrlDown)
701 case KEY_F1: VT_SetTerminal(0); return;
702 case KEY_F2: VT_SetTerminal(1); return;
703 case KEY_F3: VT_SetTerminal(2); return;
704 case KEY_F4: VT_SetTerminal(3); return;
705 case KEY_F5: VT_SetTerminal(4); return;
706 case KEY_F6: VT_SetTerminal(5); return;
707 case KEY_F7: VT_SetTerminal(6); return;
708 case KEY_F8: VT_SetTerminal(7); return;
709 case KEY_F9: VT_SetTerminal(8); return;
710 case KEY_F10: VT_SetTerminal(9); return;
711 case KEY_F11: VT_SetTerminal(10); return;
712 case KEY_F12: VT_SetTerminal(11); return;
715 if( gpVT_CurTerm->ViewPos > gpVT_CurTerm->Width )
716 gpVT_CurTerm->ViewPos -= gpVT_CurTerm->Width;
718 gpVT_CurTerm->ViewPos = 0;
721 if( gpVT_CurTerm->ViewPos < gpVT_CurTerm->Width*gpVT_CurTerm->Height*(giVT_Scrollback-1) )
722 gpVT_CurTerm->ViewPos += gpVT_CurTerm->Width;
724 gpVT_CurTerm->ViewPos = gpVT_CurTerm->Width*gpVT_CurTerm->Height*(giVT_Scrollback-1);
730 if(term->Mode == TERM_MODE_TEXT)
735 // Ignore Modifer Keys
736 if(Codepoint > KEY_MODIFIERS) return;
738 // Get UTF-8/ANSI Encoding
742 buf[0] = '\x1B'; buf[1] = '['; buf[2] = 'D';
746 buf[0] = '\x1B'; buf[1] = '['; buf[2] = 'C';
750 buf[0] = '\x1B'; buf[1] = '['; buf[2] = 'A';
754 buf[0] = '\x1B'; buf[1] = '['; buf[2] = 'B';
759 buf[0] = '\x1B'; buf[1] = '['; buf[2] = '5'; // Some overline also
760 //len = 4; // Commented out until I'm sure
766 // Attempt to encode in UTF-8
768 len = WriteUTF8( buf, Codepoint );
770 Warning("Codepoint (%x) is unrepresentable in UTF-8", Codepoint);
776 // Unprintable / Don't Pass
781 if( MAX_INPUT_CHARS8 - term->InputWrite >= len )
782 memcpy( &term->InputBuffer[term->InputWrite], buf, len );
784 memcpy( &term->InputBuffer[term->InputWrite], buf, MAX_INPUT_CHARS8 - term->InputWrite );
785 memcpy( &term->InputBuffer[0], buf, len - (MAX_INPUT_CHARS8 - term->InputWrite) );
787 // Roll the buffer over
788 term->InputWrite += len;
789 term->InputWrite %= MAX_INPUT_CHARS8;
790 if( (term->InputWrite - term->InputRead + MAX_INPUT_CHARS8)%MAX_INPUT_CHARS8 < len ) {
791 term->InputRead = term->InputWrite + 1;
792 term->InputRead %= MAX_INPUT_CHARS8;
798 // Encode the raw UTF-32 Key
799 ((Uint32*)term->InputBuffer)[ term->InputWrite ] = Codepoint;
801 term->InputWrite %= MAX_INPUT_CHARS32;
802 if(term->InputRead == term->InputWrite) {
804 term->InputRead %= MAX_INPUT_CHARS32;
810 * \fn void VT_int_ClearLine(tVTerm *Term, int Num)
811 * \brief Clears a line in a virtual terminal
813 void VT_int_ClearLine(tVTerm *Term, int Num)
816 tVT_Char *cell = &Term->Text[ Num*Term->TextWidth ];
817 if( Num < 0 || Num >= Term->TextHeight ) return ;
818 //ENTER("pTerm iNum", Term, Num);
819 for( i = Term->TextWidth; i--; )
822 cell[ i ].Colour = Term->CurColour;
828 * \fn int VT_int_ParseEscape(tVTerm *Term, char *Buffer)
829 * \brief Parses a VT100 Escape code
831 int VT_int_ParseEscape(tVTerm *Term, char *Buffer)
836 int args[6] = {0,0,0,0};
844 if( '0' <= c && c <= '9' )
847 if(c == ';') c = Buffer[j++];
848 while('0' <= c && c <= '9') {
858 // Get string (what does this do?)
866 //Log_Debug("VTerm", "argc = %i", argc);
869 if( ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z'))
875 if(argc == 1) tmp = args[0];
878 if( Term->WritePos-(tmp-1) % Term->TextWidth == 0 )
879 Term->WritePos -= Term->WritePos % Term->TextWidth;
881 Term->WritePos -= tmp;
886 if(argc == 1) tmp = args[0];
888 if( (Term->WritePos + tmp) % Term->TextWidth == 0 ) {
889 Term->WritePos -= Term->WritePos % Term->TextWidth;
890 Term->WritePos += Term->TextWidth - 1;
892 Term->WritePos += tmp;
902 int i = Term->TextHeight * (giVT_Scrollback + 1);
903 while( i-- ) VT_int_ClearLine(Term, i);
906 VT_int_UpdateScreen(Term, 1);
911 // Set cursor position
913 Term->WritePos = args[0] + args[1]*Term->TextWidth;
914 Log_Debug("VTerm", "args = {%i, %i}", args[0], args[1]);
921 if( 0 <= args[argc] && args[argc] <= 8)
925 case 0: Term->CurColour = DEFAULT_COLOUR; break; // Reset
926 case 1: Term->CurColour |= 0x80000000; break; // Bright
927 case 2: Term->CurColour &= ~0x80000000; break; // Dim
931 else if(30 <= args[argc] && args[argc] <= 37) {
932 Term->CurColour &= 0xF000FFFF;
933 Term->CurColour |= (Uint32)caVT100Colours[ args[argc]-30+(Term->CurColour>>28) ] << 16;
936 else if(40 <= args[argc] && args[argc] <= 47) {
937 Term->CurColour &= 0xFFFF8000;
938 Term->CurColour |= caVT100Colours[ args[argc]-40+((Term->CurColour>>12)&15) ];
943 Log_Warning("VTerm", "Unknown control sequence");
952 //Log_Debug("VTerm", "j = %i, Buffer = '%s'", j, Buffer);
957 * \fn void VT_int_PutString(tVTerm *Term, Uint8 *Buffer, Uint Count)
958 * \brief Print a string to the Virtual Terminal
960 void VT_int_PutString(tVTerm *Term, Uint8 *Buffer, Uint Count)
966 for( i = 0; i < Count; i++ )
968 // Handle escape sequences
969 if( Buffer[i] == 0x1B )
972 i += VT_int_ParseEscape(Term, (char*)&Buffer[i]) - 1;
976 // Fast check for non UTF-8
977 if( Buffer[i] < 128 ) // Plain ASCII
978 VT_int_PutChar(Term, Buffer[i]);
980 i += ReadUTF8(&Buffer[i], &val) - 1;
981 VT_int_PutChar(Term, val);
985 VT_int_UpdateScreen( Term, 0 );
988 if( Term == gpVT_CurTerm && !(Term->Flags & VT_FLAG_HIDECSR) )
990 tVideo_IOCtl_Pos pos;
991 pos.x = (Term->WritePos - Term->ViewPos) % Term->TextWidth;
992 pos.y = (Term->WritePos - Term->ViewPos) / Term->TextWidth;
993 VFS_IOCtl(giVT_OutputDevHandle, VIDEO_IOCTL_SETCURSOR, &pos);
998 * \fn void VT_int_PutChar(tVTerm *Term, Uint32 Ch)
999 * \brief Write a single character to a VTerm
1001 void VT_int_PutChar(tVTerm *Term, Uint32 Ch)
1007 case '\0': return; // Ignore NULL byte
1009 VT_int_UpdateScreen( Term, 0 ); // Update the line before newlining
1010 Term->WritePos += Term->TextWidth;
1012 Term->WritePos -= Term->WritePos % Term->TextWidth;
1017 Term->Text[ Term->WritePos ].Ch = '\0';
1018 Term->Text[ Term->WritePos ].Colour = Term->CurColour;
1020 } while(Term->WritePos & 7);
1024 // Backspace is invalid at Offset 0
1025 if(Term->WritePos == 0) break;
1029 if(Term->Text[ Term->WritePos ].Ch != '\0') {
1030 Term->Text[ Term->WritePos ].Ch = 0;
1031 Term->Text[ Term->WritePos ].Colour = Term->CurColour;
1035 i = 7; // Limit it to 8
1037 Term->Text[ Term->WritePos ].Ch = 0;
1038 Term->Text[ Term->WritePos ].Colour = Term->CurColour;
1040 } while(Term->WritePos && i-- && Term->Text[ Term->WritePos ].Ch == '\0');
1041 if(Term->Text[ Term->WritePos ].Ch != '\0')
1046 Term->Text[ Term->WritePos ].Ch = Ch;
1047 Term->Text[ Term->WritePos ].Colour = Term->CurColour;
1053 // - Check if we need to scroll the entire scrollback buffer
1054 if(Term->WritePos >= Term->TextWidth*Term->TextHeight*(giVT_Scrollback+1))
1058 //Debug("Scrolling entire buffer");
1061 Term->WritePos -= Term->TextWidth;
1063 VT_int_UpdateScreen( Term, 0 );
1065 // Update view position
1066 base = Term->TextWidth*Term->TextHeight*(giVT_Scrollback);
1067 if(Term->ViewPos < base)
1068 Term->ViewPos += Term->Width;
1069 if(Term->ViewPos > base)
1070 Term->ViewPos = base;
1072 // Scroll terminal cache
1073 base = Term->TextWidth*(Term->TextHeight*(giVT_Scrollback+1)-1);
1076 &Term->Text[Term->TextWidth],
1077 base*sizeof(tVT_Char)
1081 for( i = 0; i < Term->TextWidth; i ++ )
1083 Term->Text[ base + i ].Ch = 0;
1084 Term->Text[ base + i ].Colour = Term->CurColour;
1087 VT_int_ScrollFramebuffer( Term );
1088 VT_int_UpdateScreen( Term, 0 );
1090 // Ok, so we only need to scroll the screen
1091 else if(Term->WritePos >= Term->ViewPos + Term->TextWidth*Term->TextHeight)
1093 //Debug("Term->WritePos (%i) >= %i",
1095 // Term->ViewPos + Term->Width*Term->Height
1097 //Debug("Scrolling screen only");
1099 // Update the last line
1100 Term->WritePos -= Term->TextWidth;
1101 VT_int_UpdateScreen( Term, 0 );
1102 Term->WritePos += Term->TextWidth;
1105 Term->ViewPos += Term->TextWidth;
1106 //Debug("Term->ViewPos = %i", Term->ViewPos);
1107 VT_int_ScrollFramebuffer( Term );
1108 VT_int_UpdateScreen( Term, 0 );
1115 * \fn void VT_int_ScrollFramebuffer( tVTerm *Term )
1116 * \note Scrolls the framebuffer by 1 text line
1118 void VT_int_ScrollFramebuffer( tVTerm *Term )
1128 // Only update if this is the current terminal
1129 if( Term != gpVT_CurTerm ) return;
1131 // Switch to 2D Command Stream
1132 tmp = VIDEO_BUFFMT_2DSTREAM;
1133 VFS_IOCtl(giVT_OutputDevHandle, VIDEO_IOCTL_SETBUFFORMAT, &tmp);
1135 // BLIT from 0,0 to 0,giVT_CharHeight
1136 buf.Op = VIDEO_2DOP_BLIT;
1137 buf.DstX = 0; buf.DstY = 0;
1138 buf.SrcX = 0; buf.SrcY = giVT_CharHeight;
1139 buf.W = Term->TextWidth * giVT_CharWidth;
1140 buf.H = (Term->TextHeight-1) * giVT_CharHeight;
1141 VFS_WriteAt(giVT_OutputDevHandle, 0, sizeof(buf), &buf);
1143 // Restore old mode (this function is only called during text mode)
1144 tmp = VIDEO_BUFFMT_TEXT;
1145 VFS_IOCtl(giVT_OutputDevHandle, VIDEO_IOCTL_SETBUFFORMAT, &tmp);
1149 * \fn void VT_int_UpdateScreen( tVTerm *Term, int UpdateAll )
1150 * \brief Updates the video framebuffer
1152 void VT_int_UpdateScreen( tVTerm *Term, int UpdateAll )
1154 // Only update if this is the current terminal
1155 if( Term != gpVT_CurTerm ) return;
1157 switch( Term->Mode )
1159 case TERM_MODE_TEXT:
1160 // Re copy the entire screen?
1163 giVT_OutputDevHandle,
1165 Term->TextWidth*Term->TextHeight*sizeof(tVT_Char),
1166 &Term->Text[Term->ViewPos]
1169 // Only copy the current line
1171 int pos = Term->WritePos - Term->WritePos % Term->TextWidth;
1173 giVT_OutputDevHandle,
1174 (pos - Term->ViewPos)*sizeof(tVT_Char),
1175 Term->TextWidth*sizeof(tVT_Char),
1182 giVT_OutputDevHandle,
1184 Term->Width*Term->Height*sizeof(Uint32),
1192 * \brief Update the screen mode
1193 * \param Term Terminal to update
1194 * \param NewMode New mode to set
1195 * \param NewWidth New framebuffer width
1196 * \param NewHeight New framebuffer height
1198 void VT_int_ChangeMode(tVTerm *Term, int NewMode, int NewWidth, int NewHeight)
1200 int oldW = Term->Width;
1201 int oldTW = oldW / giVT_CharWidth;
1202 int oldH = Term->Height;
1203 int oldTH = oldH / giVT_CharWidth;
1204 tVT_Char *oldTBuf = Term->Text;
1205 Uint32 *oldFB = Term->Buffer;
1208 // TODO: Increase RealWidth/RealHeight when this happens
1209 if(NewWidth > giVT_RealWidth) NewWidth = giVT_RealWidth;
1210 if(NewHeight > giVT_RealHeight) NewHeight = giVT_RealHeight;
1212 // Calculate new dimensions
1213 Term->TextWidth = NewWidth / giVT_CharWidth;
1214 Term->TextHeight = NewHeight / giVT_CharHeight;
1215 Term->Width = NewWidth;
1216 Term->Height = NewHeight;
1217 Term->Mode = NewMode;
1219 // Allocate new buffers
1221 Term->Text = calloc(
1222 Term->TextWidth * Term->TextHeight * (giVT_Scrollback+1),
1228 if( w > Term->TextWidth ) w = Term->TextWidth;
1230 if( h > Term->TextHeight ) h = Term->TextHeight;
1231 h *= giVT_Scrollback + 1;
1232 for( i = 0; i < h; i ++ )
1235 &Term->Text[i*Term->TextWidth],
1244 Term->Buffer = calloc( Term->Width * Term->Height, sizeof(Uint32) );
1248 if( w > Term->Width ) w = Term->Width;
1250 if( h > Term->Height ) h = Term->Height;
1251 for( i = 0; i < h; i ++ )
1254 &Term->Buffer[i*Term->Width],
1265 case TERM_MODE_TEXT:
1266 Log_Log("VTerm", "Set VT %p to text mode (%ix%i)",
1267 Term, Term->TextWidth, Term->TextHeight);
1270 Log_Log("VTerm", "Set VT %p to framebuffer mode (%ix%i)",
1271 Term, Term->Width, Term->Height);
1273 //case TERM_MODE_2DACCEL:
1274 //case TERM_MODE_3DACCEL:
1282 #define MONOSPACE_FONT 10816
1284 #if MONOSPACE_FONT == 10808 // 8x8
1285 # include "vterm_font_8x8.h"
1286 #elif MONOSPACE_FONT == 10816 // 8x16
1287 # include "vterm_font_8x16.h"
1290 // === PROTOTYPES ===
1291 Uint8 *VT_Font_GetChar(Uint32 Codepoint);
1294 int giVT_CharWidth = FONT_WIDTH;
1295 int giVT_CharHeight = FONT_HEIGHT;
1299 * \fn void VT_Font_Render(Uint32 Codepoint, void *Buffer, int Pitch, Uint32 BGC, Uint32 FGC)
1300 * \brief Render a font character
1302 void VT_Font_Render(Uint32 Codepoint, void *Buffer, int Pitch, Uint32 BGC, Uint32 FGC)
1305 Uint32 *buf = Buffer;
1308 font = VT_Font_GetChar(Codepoint);
1310 for(y = 0; y < FONT_HEIGHT; y ++)
1312 for(x = 0; x < FONT_WIDTH; x ++)
1314 if(*font & (1 << (FONT_WIDTH-x-1)))
1325 * \fn Uint32 VT_Colour12to24(Uint16 Col12)
1328 Uint32 VT_Colour12to24(Uint16 Col12)
1333 ret = (tmp << 0) | (tmp << 4);
1334 tmp = (Col12 & 0xF0) >> 4;
1335 ret |= (tmp << 8) | (tmp << 12);
1336 tmp = (Col12 & 0xF00) >> 8;
1337 ret |= (tmp << 16) | (tmp << 20);
1342 * \fn Uint8 *VT_Font_GetChar(Uint32 Codepoint)
1343 * \brief Gets an index into the font array given a Unicode Codepoint
1344 * \note See http://en.wikipedia.org/wiki/CP437
1346 Uint8 *VT_Font_GetChar(Uint32 Codepoint)
1350 return &VTermFont[Codepoint*FONT_HEIGHT];
1353 case 0xC7: index = 128; break; // Ç
1354 case 0xFC: index = 129; break; // ü
1355 case 0xE9: index = 130; break; // é
1356 case 0xE2: index = 131; break; // â
1357 case 0xE4: index = 132; break; // ä
1358 case 0xE0: index = 133; break; // à
1359 case 0xE5: index = 134; break; // å
1360 case 0xE7: index = 135; break; // ç
1361 case 0xEA: index = 136; break; // ê
1362 case 0xEB: index = 137; break; // ë
1363 case 0xE8: index = 138; break; // è
1364 case 0xEF: index = 139; break; // ï
1365 case 0xEE: index = 140; break; // î
1366 case 0xEC: index = 141; break; // ì
1367 case 0xC4: index = 142; break; // Ä
1368 case 0xC5: index = 143; break; // Å
1371 return &VTermFont[index*FONT_HEIGHT];
1374 EXPORTAS(&giVT_CharWidth, giVT_CharWidth);
1375 EXPORTAS(&giVT_CharHeight, giVT_CharHeight);
1376 EXPORT(VT_Font_Render);
1377 EXPORT(VT_Colour12to24);