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, const 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 gsVT_OutputDevice = val;
153 else if( strcmp(opt, "Input") == 0 ) {
154 gsVT_InputDevice = val;
156 else if( strcmp(opt, "Width") == 0 ) {
157 giVT_RealWidth = atoi( val );
159 else if( strcmp(opt, "Height") == 0 ) {
160 giVT_RealHeight = atoi( val );
162 else if( strcmp(opt, "Scrollback") == 0 ) {
163 giVT_Scrollback = atoi( val );
168 if(gsVT_OutputDevice) Modules_InitialiseBuiltin( gsVT_OutputDevice );
169 if(gsVT_InputDevice) Modules_InitialiseBuiltin( gsVT_InputDevice );
172 if(!gsVT_OutputDevice) gsVT_OutputDevice = DEFAULT_OUTPUT;
173 if(!gsVT_InputDevice) gsVT_InputDevice = DEFAULT_INPUT;
178 tmp = malloc( 9 + strlen(gsVT_OutputDevice) + 1 );
179 strcpy(tmp, "/Devices/");
180 strcpy(&tmp[9], gsVT_OutputDevice);
181 gsVT_OutputDevice = tmp;
182 tmp = malloc( 9 + strlen(gsVT_InputDevice) + 1 );
183 strcpy(tmp, "/Devices/");
184 strcpy(&tmp[9], gsVT_InputDevice);
185 gsVT_InputDevice = tmp;
188 Log_Log("VTerm", "Using '%s' as output", gsVT_OutputDevice);
189 Log_Log("VTerm", "Using '%s' as input", gsVT_InputDevice);
192 for( i = 0; i < NUM_VTS; i++ )
194 gVT_Terminals[i].Mode = TERM_MODE_TEXT;
195 gVT_Terminals[i].Flags = 0;
196 gVT_Terminals[i].CurColour = DEFAULT_COLOUR;
197 gVT_Terminals[i].WritePos = 0;
198 gVT_Terminals[i].ViewPos = 0;
201 VT_int_ChangeMode( &gVT_Terminals[i],
202 TERM_MODE_TEXT, giVT_RealWidth, giVT_RealHeight );
204 gVT_Terminals[i].Name[0] = '0'+i;
205 gVT_Terminals[i].Name[1] = '\0';
206 gVT_Terminals[i].Node.Inode = i;
207 gVT_Terminals[i].Node.ImplPtr = &gVT_Terminals[i];
208 gVT_Terminals[i].Node.NumACLs = 0; // Only root can open virtual terminals
210 gVT_Terminals[i].Node.Read = VT_Read;
211 gVT_Terminals[i].Node.Write = VT_Write;
212 gVT_Terminals[i].Node.IOCtl = VT_Terminal_IOCtl;
216 DevFS_AddDevice( &gVT_DrvInfo );
221 // Set kernel output to VT0
222 Debug_SetKTerminal("/Devices/VTerm/0");
224 Log_Log("VTerm", "Returning %i", MODULE_ERR_OK);
225 return MODULE_ERR_OK;
229 * \fn void VT_InitOutput()
230 * \brief Initialise Video Output
234 giVT_OutputDevHandle = VFS_Open(gsVT_OutputDevice, VFS_OPENFLAG_WRITE);
235 if(giVT_InputDevHandle == -1) {
236 Log_Warning("VTerm", "Oh F**k, I can't open the video device '%s'", gsVT_OutputDevice);
239 VT_SetResolution( giVT_RealWidth, giVT_RealHeight );
241 VT_SetMode( VIDEO_BUFFMT_TEXT );
245 * \fn void VT_InitInput()
246 * \brief Initialises the input
250 giVT_InputDevHandle = VFS_Open(gsVT_InputDevice, VFS_OPENFLAG_READ);
251 if(giVT_InputDevHandle == -1) return ;
252 VFS_IOCtl(giVT_InputDevHandle, KB_IOCTL_SETCALLBACK, VT_KBCallBack);
256 * \brief Set the video resolution
257 * \param Width New screen width
258 * \param Height New screen height
260 void VT_SetResolution(int Width, int Height)
262 tVideo_IOCtl_Mode mode = {0};
266 // Create the video mode
268 mode.height = Height;
273 VFS_IOCtl( giVT_OutputDevHandle, VIDEO_IOCTL_FINDMODE, &mode );
275 if( Width != mode.width || Height != mode.height )
278 "Selected resolution (%ix%i is not supported) by the device, using (%ix%i)",
279 giVT_RealWidth, giVT_RealHeight,
280 mode.width, mode.height
283 VFS_IOCtl( giVT_OutputDevHandle, VIDEO_IOCTL_GETSETMODE, &tmp );
285 // Resize text terminals if needed
286 if( giVT_RealWidth != mode.width || giVT_RealHeight != mode.height )
288 int newBufSize = (giVT_RealWidth/giVT_CharWidth)
289 *(giVT_RealHeight/giVT_CharHeight)
290 *(giVT_Scrollback+1);
292 // Resize the text terminals
293 giVT_RealWidth = mode.width;
294 giVT_RealHeight = mode.height;
295 for( i = 0; i < NUM_VTS; i ++ )
297 if( gVT_Terminals[i].Mode != TERM_MODE_TEXT ) continue;
299 gVT_Terminals[i].Text = realloc(
300 gVT_Terminals[i].Text,
301 newBufSize*sizeof(tVT_Char)
308 * \brief Set video output buffer mode
310 void VT_SetMode(int Mode)
312 VFS_IOCtl( giVT_OutputDevHandle, VIDEO_IOCTL_SETBUFFORMAT, &Mode );
316 * \fn char *VT_ReadDir(tVFS_Node *Node, int Pos)
317 * \brief Read from the VTerm Directory
319 char *VT_ReadDir(tVFS_Node *Node, int Pos)
321 if(Pos < 0) return NULL;
322 if(Pos >= NUM_VTS) return NULL;
323 return strdup( gVT_Terminals[Pos].Name );
327 * \fn tVFS_Node *VT_FindDir(tVFS_Node *Node, const char *Name)
328 * \brief Find an item in the VTerm directory
329 * \param Node Root node
330 * \param Name Name (number) of the terminal
332 tVFS_Node *VT_FindDir(tVFS_Node *Node, const char *Name)
336 ENTER("pNode sName", Node, Name);
338 // Open the input and output files if needed
339 if(giVT_OutputDevHandle == -2) VT_InitOutput();
340 if(giVT_InputDevHandle == -2) VT_InitInput();
343 if(Name[0] < '0' || Name[0] > '9' || Name[1] != '\0') {
354 LEAVE('p', &gVT_Terminals[num].Node);
355 return &gVT_Terminals[num].Node;
359 * \fn int VT_Root_IOCtl(tVFS_Node *Node, int Id, void *Data)
360 * \brief Control the VTerm Driver
362 int VT_Root_IOCtl(tVFS_Node *Node, int Id, void *Data)
367 case DRV_IOCTL_TYPE: return DRV_TYPE_MISC;
368 case DRV_IOCTL_IDENT: memcpy(Data, "VT\0\0", 4); return 0;
369 case DRV_IOCTL_VERSION: return VERSION;
370 case DRV_IOCTL_LOOKUP: return 0;
372 case 4: // Get Video Driver
373 if(Data) strcpy(Data, gsVT_OutputDevice);
374 return strlen(gsVT_OutputDevice);
376 case 5: // Set Video Driver
377 if(!Data) return -EINVAL;
378 if(Threads_GetUID() != 0) return -EACCES;
382 free(gsVT_OutputDevice);
384 gsVT_OutputDevice = malloc(len+1);
385 strcpy(gsVT_OutputDevice, Data);
387 VFS_Close(giVT_OutputDevHandle);
388 giVT_OutputDevHandle = -1;
397 * \fn Uint64 VT_Read(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
398 * \brief Read from a virtual terminal
400 Uint64 VT_Read(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
403 tVTerm *term = &gVT_Terminals[ Node->Inode ];
405 // Check current mode
412 while(term->InputRead == term->InputWrite) Threads_Yield();
414 ((char*)Buffer)[pos] = term->InputBuffer[term->InputRead];
417 term->InputRead %= MAX_INPUT_CHARS8;
426 while(term->InputRead == term->InputWrite) Threads_Yield();
427 ((Uint32*)Buffer)[pos] = ((Uint32*)term->InputBuffer)[term->InputRead];
430 term->InputRead %= MAX_INPUT_CHARS32;
438 * \fn Uint64 VT_Write(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
439 * \brief Write to a virtual terminal
441 Uint64 VT_Write(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
443 tVTerm *term = &gVT_Terminals[ Node->Inode ];
451 VT_int_PutString(term, Buffer, Length);
457 size = term->Width*term->Height*4;
458 if( Offset > size ) {
459 Log_Notice("VTerm", "VT_Write: Offset (0x%llx) > FBSize (0x%x)",
463 if( Offset + Length > size ) {
464 Log_Notice("VTerm", "VT_Write: Offset+Length (0x%llx) > FBSize (0x%x)",
465 Offset+Length, size);
466 Length = size - Offset;
469 // Copy to the local cache
470 memcpy( (void*)((Uint)term->Buffer + (Uint)Offset), Buffer, Length );
472 // Update screen if needed
473 if( Node->Inode == giVT_CurrentTerminal )
475 // Fill entire screen?
476 if( giVT_RealWidth > term->Width || giVT_RealHeight > term->Height )
478 // No? :( Well, just center it
480 x = Offset/4; y = x / term->Width; x %= term->Width;
481 w = Length/4+x; h = w / term->Width; w %= term->Width;
483 x += (giVT_RealWidth - term->Width) / 2;
484 y += (giVT_RealHeight - term->Height) / 2;
487 VFS_WriteAt( giVT_OutputDevHandle,
488 (x + y * giVT_RealWidth)*4,
492 Buffer = (void*)( (Uint)Buffer + term->Width*4 );
498 return VFS_WriteAt( giVT_OutputDevHandle, Offset, Length, Buffer );
501 // Just pass on (for now)
502 // TODO: Handle locally too to ensure no information is lost on
503 // VT Switch (and to isolate terminals from each other)
504 case TERM_MODE_2DACCEL:
505 //case TERM_MODE_3DACCEL:
506 if( Node->Inode == giVT_CurrentTerminal )
508 VFS_Write( giVT_OutputDevHandle, Length, Buffer );
517 * \fn int VT_Terminal_IOCtl(tVFS_Node *Node, int Id, void *Data)
518 * \brief Call an IO Control on a virtual terminal
520 int VT_Terminal_IOCtl(tVFS_Node *Node, int Id, void *Data)
524 tVTerm *term = Node->ImplPtr;
525 ENTER("pNode iId pData", Node, Id, Data);
527 if(Id >= DRV_IOCTL_LOOKUP) {
528 // Only root can fiddle with graphics modes
529 // TODO: Remove this and replace with user ownership
530 if( Threads_GetUID() != 0 ) return -1;
537 LEAVE('i', DRV_TYPE_TERMINAL);
538 return DRV_TYPE_TERMINAL;
539 case DRV_IOCTL_IDENT:
540 memcpy(Data, "VT\0\0", 4);
543 case DRV_IOCTL_VERSION:
546 case DRV_IOCTL_LOOKUP:
550 // Get/Set the mode (and apply any changes)
551 case TERM_IOCTL_MODETYPE:
554 if( CheckMem(Data, sizeof(int)) == 0 ) {
558 Log_Log("VTerm", "VTerm %i mode set to %i", (int)Node->Inode, *iData);
560 // Update mode if needed
561 if( term->Mode != *iData
565 // Adjust for text mode
566 if( *iData == TERM_MODE_TEXT ) {
567 term->NewHeight *= giVT_CharHeight;
568 term->NewWidth *= giVT_CharWidth;
570 // Fill unchanged dimensions
571 if(term->NewHeight == 0) term->NewHeight = term->Height;
572 if(term->NewWidth == 0) term->NewWidth = term->Width;
574 VT_int_ChangeMode(term, *iData, term->NewWidth, term->NewHeight);
575 // Clear unapplied dimensions
580 // Update the screen dimensions
581 if(Node->Inode == giVT_CurrentTerminal)
582 VT_SetTerminal( giVT_CurrentTerminal );
584 LEAVE('i', term->Mode);
587 // Get/set the terminal width
588 case TERM_IOCTL_WIDTH:
590 if( CheckMem(Data, sizeof(int)) == 0 ) {
594 term->NewWidth = *iData;
597 ret = term->NewWidth;
598 else if( term->Mode == TERM_MODE_TEXT )
599 ret = term->TextWidth;
605 // Get/set the terminal height
606 case TERM_IOCTL_HEIGHT:
608 if( CheckMem(Data, sizeof(int)) == 0 ) {
612 term->NewHeight = *iData;
614 if( term->NewHeight )
615 ret = term->NewHeight;
616 else if( term->Mode == TERM_MODE_TEXT )
617 ret = term->TextHeight = *iData;
623 case TERM_IOCTL_FORCESHOW:
624 Log_Log("VTerm", "Thread %i forced VTerm %i to be shown",
625 Threads_GetTID(), (int)Node->Inode);
626 VT_SetTerminal( Node->Inode );
635 * \fn void VT_SetTerminal(int ID)
636 * \brief Set the current terminal
638 void VT_SetTerminal(int ID)
640 // Update current terminal ID
641 Log_Log("VTerm", "Changed terminal from %i to %i", giVT_CurrentTerminal, ID);
642 giVT_CurrentTerminal = ID;
643 gpVT_CurTerm = &gVT_Terminals[ID];
646 if( gpVT_CurTerm->Mode == TERM_MODE_TEXT && !(gpVT_CurTerm->Flags & VT_FLAG_HIDECSR) )
648 tVideo_IOCtl_Pos pos;
649 pos.x = (gpVT_CurTerm->WritePos - gpVT_CurTerm->ViewPos) % gpVT_CurTerm->TextWidth;
650 pos.y = (gpVT_CurTerm->WritePos - gpVT_CurTerm->ViewPos) / gpVT_CurTerm->TextWidth;
651 VFS_IOCtl(giVT_OutputDevHandle, VIDEO_IOCTL_SETCURSOR, &pos);
654 if( gpVT_CurTerm->Mode == TERM_MODE_TEXT )
655 VT_SetMode( VIDEO_BUFFMT_TEXT );
657 VT_SetMode( VIDEO_BUFFMT_FRAMEBUFFER );
660 VT_int_UpdateScreen( &gVT_Terminals[ ID ], 1 );
664 * \fn void VT_KBCallBack(Uint32 Codepoint)
665 * \brief Called on keyboard interrupt
666 * \param Codepoint Pseudo-UTF32 character
668 * Handles a key press and sends the key code to the user's buffer.
669 * If the code creates a kernel-magic sequence, it is not passed to the
670 * user and is handled in-kernel.
672 void VT_KBCallBack(Uint32 Codepoint)
674 tVTerm *term = gpVT_CurTerm;
676 // How the hell did we get a codepoint of zero?
677 if(Codepoint == 0) return;
680 if( Codepoint & 0x80000000 )
682 Codepoint &= 0x7FFFFFFF;
686 case KEY_RSHIFT: gbVT_CtrlDown = 0; break;
687 case KEY_LSHIFT: gbVT_AltDown = 0; break;
689 case KEY_LALT: gbVT_AltDown &= ~1; break;
690 case KEY_RALT: gbVT_AltDown &= ~2; break;
691 case KEY_LCTRL: gbVT_CtrlDown &= ~1 break;
692 case KEY_RCTRL: gbVT_CtrlDown &= ~2; break;
700 #if !USE_CTRL_ALT // HACK: Use both shifts instead of Ctrl-Alt
701 case KEY_RSHIFT: gbVT_CtrlDown = 1; break;
702 case KEY_LSHIFT: gbVT_AltDown = 1; break;
704 case KEY_LALT: gbVT_AltDown |= 1; break;
705 case KEY_RALT: gbVT_AltDown |= 2; break;
706 case KEY_LCTRL: gbVT_CtrlDown |= 1; break;
707 case KEY_RCTRL: gbVT_CtrlDown |= 2; break;
711 if(!gbVT_AltDown || !gbVT_CtrlDown)
715 case KEY_F1: VT_SetTerminal(0); return;
716 case KEY_F2: VT_SetTerminal(1); return;
717 case KEY_F3: VT_SetTerminal(2); return;
718 case KEY_F4: VT_SetTerminal(3); return;
719 case KEY_F5: VT_SetTerminal(4); return;
720 case KEY_F6: VT_SetTerminal(5); return;
721 case KEY_F7: VT_SetTerminal(6); return;
722 case KEY_F8: VT_SetTerminal(7); return;
723 case KEY_F9: VT_SetTerminal(8); return;
724 case KEY_F10: VT_SetTerminal(9); return;
725 case KEY_F11: VT_SetTerminal(10); return;
726 case KEY_F12: VT_SetTerminal(11); return;
729 if( gpVT_CurTerm->ViewPos > gpVT_CurTerm->Width )
730 gpVT_CurTerm->ViewPos -= gpVT_CurTerm->Width;
732 gpVT_CurTerm->ViewPos = 0;
735 if( gpVT_CurTerm->ViewPos < gpVT_CurTerm->Width*gpVT_CurTerm->Height*(giVT_Scrollback-1) )
736 gpVT_CurTerm->ViewPos += gpVT_CurTerm->Width;
738 gpVT_CurTerm->ViewPos = gpVT_CurTerm->Width*gpVT_CurTerm->Height*(giVT_Scrollback-1);
744 if(term->Mode == TERM_MODE_TEXT)
749 // Ignore Modifer Keys
750 if(Codepoint > KEY_MODIFIERS) return;
752 // Get UTF-8/ANSI Encoding
756 buf[0] = '\x1B'; buf[1] = '['; buf[2] = 'D';
760 buf[0] = '\x1B'; buf[1] = '['; buf[2] = 'C';
764 buf[0] = '\x1B'; buf[1] = '['; buf[2] = 'A';
768 buf[0] = '\x1B'; buf[1] = '['; buf[2] = 'B';
773 buf[0] = '\x1B'; buf[1] = '['; buf[2] = '5'; // Some overline also
774 //len = 4; // Commented out until I'm sure
780 // Attempt to encode in UTF-8
782 len = WriteUTF8( buf, Codepoint );
784 Warning("Codepoint (%x) is unrepresentable in UTF-8", Codepoint);
790 // Unprintable / Don't Pass
795 if( MAX_INPUT_CHARS8 - term->InputWrite >= len )
796 memcpy( &term->InputBuffer[term->InputWrite], buf, len );
798 memcpy( &term->InputBuffer[term->InputWrite], buf, MAX_INPUT_CHARS8 - term->InputWrite );
799 memcpy( &term->InputBuffer[0], buf, len - (MAX_INPUT_CHARS8 - term->InputWrite) );
801 // Roll the buffer over
802 term->InputWrite += len;
803 term->InputWrite %= MAX_INPUT_CHARS8;
804 if( (term->InputWrite - term->InputRead + MAX_INPUT_CHARS8)%MAX_INPUT_CHARS8 < len ) {
805 term->InputRead = term->InputWrite + 1;
806 term->InputRead %= MAX_INPUT_CHARS8;
812 // Encode the raw UTF-32 Key
813 ((Uint32*)term->InputBuffer)[ term->InputWrite ] = Codepoint;
815 term->InputWrite %= MAX_INPUT_CHARS32;
816 if(term->InputRead == term->InputWrite) {
818 term->InputRead %= MAX_INPUT_CHARS32;
824 * \fn void VT_int_ClearLine(tVTerm *Term, int Num)
825 * \brief Clears a line in a virtual terminal
827 void VT_int_ClearLine(tVTerm *Term, int Num)
830 tVT_Char *cell = &Term->Text[ Num*Term->TextWidth ];
831 if( Num < 0 || Num >= Term->TextHeight ) return ;
832 //ENTER("pTerm iNum", Term, Num);
833 for( i = Term->TextWidth; i--; )
836 cell[ i ].Colour = Term->CurColour;
842 * \fn int VT_int_ParseEscape(tVTerm *Term, char *Buffer)
843 * \brief Parses a VT100 Escape code
845 int VT_int_ParseEscape(tVTerm *Term, char *Buffer)
850 int args[6] = {0,0,0,0};
858 if( '0' <= c && c <= '9' )
861 if(c == ';') c = Buffer[j++];
862 while('0' <= c && c <= '9') {
872 // Get string (what does this do?)
880 //Log_Debug("VTerm", "argc = %i", argc);
883 if( ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z'))
889 if(argc == 1) tmp = args[0];
892 if( Term->WritePos-(tmp-1) % Term->TextWidth == 0 )
893 Term->WritePos -= Term->WritePos % Term->TextWidth;
895 Term->WritePos -= tmp;
900 if(argc == 1) tmp = args[0];
902 if( (Term->WritePos + tmp) % Term->TextWidth == 0 ) {
903 Term->WritePos -= Term->WritePos % Term->TextWidth;
904 Term->WritePos += Term->TextWidth - 1;
906 Term->WritePos += tmp;
916 int i = Term->TextHeight * (giVT_Scrollback + 1);
917 while( i-- ) VT_int_ClearLine(Term, i);
920 VT_int_UpdateScreen(Term, 1);
925 // Set cursor position
927 Term->WritePos = args[0] + args[1]*Term->TextWidth;
928 Log_Debug("VTerm", "args = {%i, %i}", args[0], args[1]);
935 if( 0 <= args[argc] && args[argc] <= 8)
939 case 0: Term->CurColour = DEFAULT_COLOUR; break; // Reset
940 case 1: Term->CurColour |= 0x80000000; break; // Bright
941 case 2: Term->CurColour &= ~0x80000000; break; // Dim
945 else if(30 <= args[argc] && args[argc] <= 37) {
946 Term->CurColour &= 0xF000FFFF;
947 Term->CurColour |= (Uint32)caVT100Colours[ args[argc]-30+(Term->CurColour>>28) ] << 16;
950 else if(40 <= args[argc] && args[argc] <= 47) {
951 Term->CurColour &= 0xFFFF8000;
952 Term->CurColour |= caVT100Colours[ args[argc]-40+((Term->CurColour>>12)&15) ];
957 Log_Warning("VTerm", "Unknown control sequence");
966 //Log_Debug("VTerm", "j = %i, Buffer = '%s'", j, Buffer);
971 * \fn void VT_int_PutString(tVTerm *Term, Uint8 *Buffer, Uint Count)
972 * \brief Print a string to the Virtual Terminal
974 void VT_int_PutString(tVTerm *Term, Uint8 *Buffer, Uint Count)
980 for( i = 0; i < Count; i++ )
982 // Handle escape sequences
983 if( Buffer[i] == 0x1B )
986 i += VT_int_ParseEscape(Term, (char*)&Buffer[i]) - 1;
990 // Fast check for non UTF-8
991 if( Buffer[i] < 128 ) // Plain ASCII
992 VT_int_PutChar(Term, Buffer[i]);
994 i += ReadUTF8(&Buffer[i], &val) - 1;
995 VT_int_PutChar(Term, val);
999 VT_int_UpdateScreen( Term, 0 );
1002 if( Term == gpVT_CurTerm && !(Term->Flags & VT_FLAG_HIDECSR) )
1004 tVideo_IOCtl_Pos pos;
1005 pos.x = (Term->WritePos - Term->ViewPos) % Term->TextWidth;
1006 pos.y = (Term->WritePos - Term->ViewPos) / Term->TextWidth;
1007 VFS_IOCtl(giVT_OutputDevHandle, VIDEO_IOCTL_SETCURSOR, &pos);
1012 * \fn void VT_int_PutChar(tVTerm *Term, Uint32 Ch)
1013 * \brief Write a single character to a VTerm
1015 void VT_int_PutChar(tVTerm *Term, Uint32 Ch)
1021 case '\0': return; // Ignore NULL byte
1023 VT_int_UpdateScreen( Term, 0 ); // Update the line before newlining
1024 Term->WritePos += Term->TextWidth;
1026 Term->WritePos -= Term->WritePos % Term->TextWidth;
1031 Term->Text[ Term->WritePos ].Ch = '\0';
1032 Term->Text[ Term->WritePos ].Colour = Term->CurColour;
1034 } while(Term->WritePos & 7);
1038 // Backspace is invalid at Offset 0
1039 if(Term->WritePos == 0) break;
1043 if(Term->Text[ Term->WritePos ].Ch != '\0') {
1044 Term->Text[ Term->WritePos ].Ch = 0;
1045 Term->Text[ Term->WritePos ].Colour = Term->CurColour;
1049 i = 7; // Limit it to 8
1051 Term->Text[ Term->WritePos ].Ch = 0;
1052 Term->Text[ Term->WritePos ].Colour = Term->CurColour;
1054 } while(Term->WritePos && i-- && Term->Text[ Term->WritePos ].Ch == '\0');
1055 if(Term->Text[ Term->WritePos ].Ch != '\0')
1060 Term->Text[ Term->WritePos ].Ch = Ch;
1061 Term->Text[ Term->WritePos ].Colour = Term->CurColour;
1067 // - Check if we need to scroll the entire scrollback buffer
1068 if(Term->WritePos >= Term->TextWidth*Term->TextHeight*(giVT_Scrollback+1))
1072 //Debug("Scrolling entire buffer");
1075 Term->WritePos -= Term->TextWidth;
1077 VT_int_UpdateScreen( Term, 0 );
1079 // Update view position
1080 base = Term->TextWidth*Term->TextHeight*(giVT_Scrollback);
1081 if(Term->ViewPos < base)
1082 Term->ViewPos += Term->Width;
1083 if(Term->ViewPos > base)
1084 Term->ViewPos = base;
1086 // Scroll terminal cache
1087 base = Term->TextWidth*(Term->TextHeight*(giVT_Scrollback+1)-1);
1090 &Term->Text[Term->TextWidth],
1091 base*sizeof(tVT_Char)
1095 for( i = 0; i < Term->TextWidth; i ++ )
1097 Term->Text[ base + i ].Ch = 0;
1098 Term->Text[ base + i ].Colour = Term->CurColour;
1101 VT_int_ScrollFramebuffer( Term );
1102 VT_int_UpdateScreen( Term, 0 );
1104 // Ok, so we only need to scroll the screen
1105 else if(Term->WritePos >= Term->ViewPos + Term->TextWidth*Term->TextHeight)
1107 //Debug("Term->WritePos (%i) >= %i",
1109 // Term->ViewPos + Term->Width*Term->Height
1111 //Debug("Scrolling screen only");
1113 // Update the last line
1114 Term->WritePos -= Term->TextWidth;
1115 VT_int_UpdateScreen( Term, 0 );
1116 Term->WritePos += Term->TextWidth;
1119 Term->ViewPos += Term->TextWidth;
1120 //Debug("Term->ViewPos = %i", Term->ViewPos);
1121 VT_int_ScrollFramebuffer( Term );
1122 VT_int_UpdateScreen( Term, 0 );
1129 * \fn void VT_int_ScrollFramebuffer( tVTerm *Term )
1130 * \note Scrolls the framebuffer by 1 text line
1132 void VT_int_ScrollFramebuffer( tVTerm *Term )
1142 // Only update if this is the current terminal
1143 if( Term != gpVT_CurTerm ) return;
1145 // Switch to 2D Command Stream
1146 tmp = VIDEO_BUFFMT_2DSTREAM;
1147 VFS_IOCtl(giVT_OutputDevHandle, VIDEO_IOCTL_SETBUFFORMAT, &tmp);
1149 // BLIT from 0,0 to 0,giVT_CharHeight
1150 buf.Op = VIDEO_2DOP_BLIT;
1151 buf.DstX = 0; buf.DstY = 0;
1152 buf.SrcX = 0; buf.SrcY = giVT_CharHeight;
1153 buf.W = Term->TextWidth * giVT_CharWidth;
1154 buf.H = (Term->TextHeight-1) * giVT_CharHeight;
1155 VFS_WriteAt(giVT_OutputDevHandle, 0, sizeof(buf), &buf);
1157 // Restore old mode (this function is only called during text mode)
1158 tmp = VIDEO_BUFFMT_TEXT;
1159 VFS_IOCtl(giVT_OutputDevHandle, VIDEO_IOCTL_SETBUFFORMAT, &tmp);
1163 * \fn void VT_int_UpdateScreen( tVTerm *Term, int UpdateAll )
1164 * \brief Updates the video framebuffer
1166 void VT_int_UpdateScreen( tVTerm *Term, int UpdateAll )
1168 // Only update if this is the current terminal
1169 if( Term != gpVT_CurTerm ) return;
1171 switch( Term->Mode )
1173 case TERM_MODE_TEXT:
1174 // Re copy the entire screen?
1177 giVT_OutputDevHandle,
1179 Term->TextWidth*Term->TextHeight*sizeof(tVT_Char),
1180 &Term->Text[Term->ViewPos]
1183 // Only copy the current line
1185 int pos = Term->WritePos - Term->WritePos % Term->TextWidth;
1187 giVT_OutputDevHandle,
1188 (pos - Term->ViewPos)*sizeof(tVT_Char),
1189 Term->TextWidth*sizeof(tVT_Char),
1196 giVT_OutputDevHandle,
1198 Term->Width*Term->Height*sizeof(Uint32),
1206 * \brief Update the screen mode
1207 * \param Term Terminal to update
1208 * \param NewMode New mode to set
1209 * \param NewWidth New framebuffer width
1210 * \param NewHeight New framebuffer height
1212 void VT_int_ChangeMode(tVTerm *Term, int NewMode, int NewWidth, int NewHeight)
1214 int oldW = Term->Width;
1215 int oldTW = oldW / giVT_CharWidth;
1216 int oldH = Term->Height;
1217 int oldTH = oldH / giVT_CharWidth;
1218 tVT_Char *oldTBuf = Term->Text;
1219 Uint32 *oldFB = Term->Buffer;
1222 // TODO: Increase RealWidth/RealHeight when this happens
1223 if(NewWidth > giVT_RealWidth) NewWidth = giVT_RealWidth;
1224 if(NewHeight > giVT_RealHeight) NewHeight = giVT_RealHeight;
1226 // Calculate new dimensions
1227 Term->TextWidth = NewWidth / giVT_CharWidth;
1228 Term->TextHeight = NewHeight / giVT_CharHeight;
1229 Term->Width = NewWidth;
1230 Term->Height = NewHeight;
1231 Term->Mode = NewMode;
1233 // Allocate new buffers
1235 Term->Text = calloc(
1236 Term->TextWidth * Term->TextHeight * (giVT_Scrollback+1),
1242 if( w > Term->TextWidth ) w = Term->TextWidth;
1244 if( h > Term->TextHeight ) h = Term->TextHeight;
1245 h *= giVT_Scrollback + 1;
1246 for( i = 0; i < h; i ++ )
1249 &Term->Text[i*Term->TextWidth],
1258 Term->Buffer = calloc( Term->Width * Term->Height, sizeof(Uint32) );
1262 if( w > Term->Width ) w = Term->Width;
1264 if( h > Term->Height ) h = Term->Height;
1265 for( i = 0; i < h; i ++ )
1268 &Term->Buffer[i*Term->Width],
1279 case TERM_MODE_TEXT:
1280 Log_Log("VTerm", "Set VT %p to text mode (%ix%i)",
1281 Term, Term->TextWidth, Term->TextHeight);
1284 Log_Log("VTerm", "Set VT %p to framebuffer mode (%ix%i)",
1285 Term, Term->Width, Term->Height);
1287 //case TERM_MODE_2DACCEL:
1288 //case TERM_MODE_3DACCEL:
1296 #define MONOSPACE_FONT 10816
1298 #if MONOSPACE_FONT == 10808 // 8x8
1299 # include "vterm_font_8x8.h"
1300 #elif MONOSPACE_FONT == 10816 // 8x16
1301 # include "vterm_font_8x16.h"
1304 // === PROTOTYPES ===
1305 Uint8 *VT_Font_GetChar(Uint32 Codepoint);
1308 int giVT_CharWidth = FONT_WIDTH;
1309 int giVT_CharHeight = FONT_HEIGHT;
1313 * \fn void VT_Font_Render(Uint32 Codepoint, void *Buffer, int Pitch, Uint32 BGC, Uint32 FGC)
1314 * \brief Render a font character
1316 void VT_Font_Render(Uint32 Codepoint, void *Buffer, int Pitch, Uint32 BGC, Uint32 FGC)
1319 Uint32 *buf = Buffer;
1322 font = VT_Font_GetChar(Codepoint);
1324 for(y = 0; y < FONT_HEIGHT; y ++)
1326 for(x = 0; x < FONT_WIDTH; x ++)
1328 if(*font & (1 << (FONT_WIDTH-x-1)))
1339 * \fn Uint32 VT_Colour12to24(Uint16 Col12)
1342 Uint32 VT_Colour12to24(Uint16 Col12)
1347 ret = (tmp << 0) | (tmp << 4);
1348 tmp = (Col12 & 0xF0) >> 4;
1349 ret |= (tmp << 8) | (tmp << 12);
1350 tmp = (Col12 & 0xF00) >> 8;
1351 ret |= (tmp << 16) | (tmp << 20);
1356 * \fn Uint8 *VT_Font_GetChar(Uint32 Codepoint)
1357 * \brief Gets an index into the font array given a Unicode Codepoint
1358 * \note See http://en.wikipedia.org/wiki/CP437
1360 Uint8 *VT_Font_GetChar(Uint32 Codepoint)
1364 return &VTermFont[Codepoint*FONT_HEIGHT];
1367 case 0xC7: index = 128; break; // Ç
1368 case 0xFC: index = 129; break; // ü
1369 case 0xE9: index = 130; break; // é
1370 case 0xE2: index = 131; break; // â
1371 case 0xE4: index = 132; break; // ä
1372 case 0xE0: index = 133; break; // à
1373 case 0xE5: index = 134; break; // å
1374 case 0xE7: index = 135; break; // ç
1375 case 0xEA: index = 136; break; // ê
1376 case 0xEB: index = 137; break; // ë
1377 case 0xE8: index = 138; break; // è
1378 case 0xEF: index = 139; break; // ï
1379 case 0xEE: index = 140; break; // î
1380 case 0xEC: index = 141; break; // ì
1381 case 0xC4: index = 142; break; // Ä
1382 case 0xC5: index = 143; break; // Å
1385 return &VTermFont[index*FONT_HEIGHT];
1388 EXPORTAS(&giVT_CharWidth, giVT_CharWidth);
1389 EXPORTAS(&giVT_CharHeight, giVT_CharHeight);
1390 EXPORT(VT_Font_Render);
1391 EXPORT(VT_Colour12to24);