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_*)
43 short NewWidth; //!< Un-applied dimensions (Width)
44 short NewHeight; //!< Un-applied dimensions (Height)
45 short Width; //!< Virtual Width
46 short Height; //!< Virtual Height
47 short TextWidth; //!< Text Virtual Width
48 short TextHeight; //!< Text Virtual Height
50 int ViewPos; //!< View Buffer Offset (Text Only)
51 int WritePos; //!< Write Buffer Offset (Text Only)
52 Uint32 CurColour; //!< Current Text Colour
54 tMutex ReadingLock; //!< Lock the VTerm when a process is reading from it
55 tTID ReadingThread; //!< Owner of the lock
56 int InputRead; //!< Input buffer read position
57 int InputWrite; //!< Input buffer write position
58 char InputBuffer[MAX_INPUT_CHARS8];
63 char Name[2]; //!< Name of the terminal
68 extern void Debug_SetKTerminal(char *File);
71 int VT_Install(char **Arguments);
72 void VT_InitOutput(void);
73 void VT_InitInput(void);
74 char *VT_ReadDir(tVFS_Node *Node, int Pos);
75 tVFS_Node *VT_FindDir(tVFS_Node *Node, const char *Name);
76 int VT_Root_IOCtl(tVFS_Node *Node, int Id, void *Data);
77 Uint64 VT_Read(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer);
78 Uint64 VT_Write(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer);
79 int VT_Terminal_IOCtl(tVFS_Node *Node, int Id, void *Data);
80 void VT_SetResolution(int Width, int Height);
81 void VT_SetMode(int Mode);
82 void VT_SetTerminal(int ID);
83 void VT_KBCallBack(Uint32 Codepoint);
84 void VT_int_PutString(tVTerm *Term, Uint8 *Buffer, Uint Count);
85 int VT_int_ParseEscape(tVTerm *Term, char *Buffer);
86 void VT_int_PutChar(tVTerm *Term, Uint32 Ch);
87 void VT_int_ScrollFramebuffer( tVTerm *Term );
88 void VT_int_UpdateScreen( tVTerm *Term, int UpdateAll );
89 void VT_int_ChangeMode(tVTerm *Term, int NewMode, int NewWidth, int NewHeight);
92 const Uint16 caVT100Colours[] = {
93 // Black, Red, Green, Yellow, Blue, Purple, Cyan, Gray
94 // Same again, but bright
95 VT_COL_BLACK, 0x700, 0x070, 0x770, 0x007, 0x707, 0x077, 0xAAA,
96 VT_COL_GREY, 0xF00, 0x0F0, 0xFF0, 0x00F, 0xF0F, 0x0FF, VT_COL_WHITE
100 MODULE_DEFINE(0, VERSION, VTerm, VT_Install, NULL, DEFAULT_OUTPUT, DEFAULT_INPUT, NULL);
101 tDevFS_Driver gVT_DrvInfo = {
104 .Flags = VFS_FFLAG_DIRECTORY,
108 .ReadDir = VT_ReadDir,
109 .FindDir = VT_FindDir,
110 .IOCtl = VT_Root_IOCtl
114 tVTerm gVT_Terminals[NUM_VTS];
115 int giVT_CurrentTerminal = 0;
116 tVTerm *gpVT_CurTerm = &gVT_Terminals[0];
117 // --- Video State ---
118 short giVT_RealWidth = DEFAULT_WIDTH; //!< Screen Width
119 short giVT_RealHeight = DEFAULT_HEIGHT; //!< Screen Height
120 int giVT_Scrollback = DEFAULT_SCROLLBACK;
121 // --- Driver Handles ---
122 char *gsVT_OutputDevice = NULL;
123 char *gsVT_InputDevice = NULL;
124 int giVT_OutputDevHandle = -2;
125 int giVT_InputDevHandle = -2;
126 // --- Key States --- (Used for VT Switching/Magic Combos)
127 int gbVT_CtrlDown = 0;
128 int gbVT_AltDown = 0;
129 int gbVT_SysrqDown = 0;
133 * \fn int VT_Install(char **Arguments)
134 * \brief Installs the Virtual Terminal Driver
136 int VT_Install(char **Arguments)
145 for(args = Arguments; (arg = *args); args++ )
147 char data[strlen(arg)+1];
151 val = strchr(arg, '=');
154 data[ val - arg ] = '\0';
157 Log_Debug("VTerm", "Argument '%s'", arg);
159 if( strcmp(opt, "Video") == 0 ) {
160 gsVT_OutputDevice = val;
162 else if( strcmp(opt, "Input") == 0 ) {
163 gsVT_InputDevice = val;
165 else if( strcmp(opt, "Width") == 0 ) {
166 giVT_RealWidth = atoi( val );
168 else if( strcmp(opt, "Height") == 0 ) {
169 giVT_RealHeight = atoi( val );
171 else if( strcmp(opt, "Scrollback") == 0 ) {
172 giVT_Scrollback = atoi( val );
177 if(gsVT_OutputDevice) Modules_InitialiseBuiltin( gsVT_OutputDevice );
178 if(gsVT_InputDevice) Modules_InitialiseBuiltin( gsVT_InputDevice );
181 if(!gsVT_OutputDevice) gsVT_OutputDevice = DEFAULT_OUTPUT;
182 if(!gsVT_InputDevice) gsVT_InputDevice = DEFAULT_INPUT;
187 tmp = malloc( 9 + strlen(gsVT_OutputDevice) + 1 );
188 strcpy(tmp, "/Devices/");
189 strcpy(&tmp[9], gsVT_OutputDevice);
190 gsVT_OutputDevice = tmp;
191 tmp = malloc( 9 + strlen(gsVT_InputDevice) + 1 );
192 strcpy(tmp, "/Devices/");
193 strcpy(&tmp[9], gsVT_InputDevice);
194 gsVT_InputDevice = tmp;
197 Log_Log("VTerm", "Using '%s' as output", gsVT_OutputDevice);
198 Log_Log("VTerm", "Using '%s' as input", gsVT_InputDevice);
201 for( i = 0; i < NUM_VTS; i++ )
203 gVT_Terminals[i].Mode = TERM_MODE_TEXT;
204 gVT_Terminals[i].Flags = 0;
205 gVT_Terminals[i].CurColour = DEFAULT_COLOUR;
206 gVT_Terminals[i].WritePos = 0;
207 gVT_Terminals[i].ViewPos = 0;
208 gVT_Terminals[i].ReadingThread = -1;
211 VT_int_ChangeMode( &gVT_Terminals[i],
212 TERM_MODE_TEXT, giVT_RealWidth, giVT_RealHeight );
214 gVT_Terminals[i].Name[0] = '0'+i;
215 gVT_Terminals[i].Name[1] = '\0';
216 gVT_Terminals[i].Node.Inode = i;
217 gVT_Terminals[i].Node.ImplPtr = &gVT_Terminals[i];
218 gVT_Terminals[i].Node.NumACLs = 0; // Only root can open virtual terminals
220 gVT_Terminals[i].Node.Read = VT_Read;
221 gVT_Terminals[i].Node.Write = VT_Write;
222 gVT_Terminals[i].Node.IOCtl = VT_Terminal_IOCtl;
226 DevFS_AddDevice( &gVT_DrvInfo );
231 // Set kernel output to VT0
232 Debug_SetKTerminal("/Devices/VTerm/0");
234 Log_Log("VTerm", "Returning %i", MODULE_ERR_OK);
235 return MODULE_ERR_OK;
239 * \fn void VT_InitOutput()
240 * \brief Initialise Video Output
244 giVT_OutputDevHandle = VFS_Open(gsVT_OutputDevice, VFS_OPENFLAG_WRITE);
245 if(giVT_OutputDevHandle == -1) {
246 Log_Warning("VTerm", "Oh F**k, I can't open the video device '%s'", gsVT_OutputDevice);
249 VT_SetResolution( giVT_RealWidth, giVT_RealHeight );
251 VT_SetMode( VIDEO_BUFFMT_TEXT );
255 * \fn void VT_InitInput()
256 * \brief Initialises the input
260 giVT_InputDevHandle = VFS_Open(gsVT_InputDevice, VFS_OPENFLAG_READ);
261 if(giVT_InputDevHandle == -1) {
262 Log_Warning("VTerm", "Can't open the input device '%s'", gsVT_InputDevice);
265 VFS_IOCtl(giVT_InputDevHandle, KB_IOCTL_SETCALLBACK, VT_KBCallBack);
269 * \brief Set the video resolution
270 * \param Width New screen width
271 * \param Height New screen height
273 void VT_SetResolution(int Width, int Height)
275 tVideo_IOCtl_Mode mode = {0};
279 // Create the video mode
281 mode.height = Height;
286 VFS_IOCtl( giVT_OutputDevHandle, VIDEO_IOCTL_FINDMODE, &mode );
288 if( Width != mode.width || Height != mode.height )
291 "Selected resolution (%ix%i is not supported) by the device, using (%ix%i)",
292 giVT_RealWidth, giVT_RealHeight,
293 mode.width, mode.height
296 VFS_IOCtl( giVT_OutputDevHandle, VIDEO_IOCTL_GETSETMODE, &tmp );
298 // Resize text terminals if needed
299 if( giVT_RealWidth != mode.width || giVT_RealHeight != mode.height )
301 int newBufSize = (giVT_RealWidth/giVT_CharWidth)
302 *(giVT_RealHeight/giVT_CharHeight)
303 *(giVT_Scrollback+1);
305 // Resize the text terminals
306 giVT_RealWidth = mode.width;
307 giVT_RealHeight = mode.height;
308 for( i = 0; i < NUM_VTS; i ++ )
310 if( gVT_Terminals[i].Mode != TERM_MODE_TEXT ) continue;
312 gVT_Terminals[i].Text = realloc(
313 gVT_Terminals[i].Text,
314 newBufSize*sizeof(tVT_Char)
321 * \brief Set video output buffer mode
323 void VT_SetMode(int Mode)
325 VFS_IOCtl( giVT_OutputDevHandle, VIDEO_IOCTL_SETBUFFORMAT, &Mode );
329 * \fn char *VT_ReadDir(tVFS_Node *Node, int Pos)
330 * \brief Read from the VTerm Directory
332 char *VT_ReadDir(tVFS_Node *Node, int Pos)
334 if(Pos < 0) return NULL;
335 if(Pos >= NUM_VTS) return NULL;
336 return strdup( gVT_Terminals[Pos].Name );
340 * \fn tVFS_Node *VT_FindDir(tVFS_Node *Node, const char *Name)
341 * \brief Find an item in the VTerm directory
342 * \param Node Root node
343 * \param Name Name (number) of the terminal
345 tVFS_Node *VT_FindDir(tVFS_Node *Node, const char *Name)
349 ENTER("pNode sName", Node, Name);
351 // Open the input and output files if needed
352 if(giVT_OutputDevHandle == -2) VT_InitOutput();
353 if(giVT_InputDevHandle == -2) VT_InitInput();
356 if(Name[0] < '0' || Name[0] > '9' || Name[1] != '\0') {
367 LEAVE('p', &gVT_Terminals[num].Node);
368 return &gVT_Terminals[num].Node;
372 * \fn int VT_Root_IOCtl(tVFS_Node *Node, int Id, void *Data)
373 * \brief Control the VTerm Driver
375 int VT_Root_IOCtl(tVFS_Node *Node, int Id, void *Data)
380 case DRV_IOCTL_TYPE: return DRV_TYPE_MISC;
381 case DRV_IOCTL_IDENT: memcpy(Data, "VT\0\0", 4); return 0;
382 case DRV_IOCTL_VERSION: return VERSION;
383 case DRV_IOCTL_LOOKUP: return 0;
385 case 4: // Get Video Driver
386 if(Data) strcpy(Data, gsVT_OutputDevice);
387 return strlen(gsVT_OutputDevice);
389 case 5: // Set Video Driver
390 if(!Data) return -EINVAL;
391 if(Threads_GetUID() != 0) return -EACCES;
395 free(gsVT_OutputDevice);
397 gsVT_OutputDevice = malloc(len+1);
398 strcpy(gsVT_OutputDevice, Data);
400 VFS_Close(giVT_OutputDevHandle);
401 giVT_OutputDevHandle = -1;
410 * \fn Uint64 VT_Read(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
411 * \brief Read from a virtual terminal
413 Uint64 VT_Read(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
416 tVTerm *term = &gVT_Terminals[ Node->Inode ];
418 Mutex_Acquire( &term->ReadingLock );
419 term->ReadingThread = Threads_GetTID();
421 // Check current mode
428 //TODO: Sleep instead
429 while(term->InputRead == term->InputWrite) Threads_Sleep();
431 ((char*)Buffer)[pos] = term->InputBuffer[term->InputRead];
434 term->InputRead %= MAX_INPUT_CHARS8;
443 while(term->InputRead == term->InputWrite) Threads_Sleep();
444 ((Uint32*)Buffer)[pos] = ((Uint32*)term->InputBuffer)[term->InputRead];
447 term->InputRead %= MAX_INPUT_CHARS32;
452 term->ReadingThread = -1;
453 Mutex_Release( &term->ReadingLock );
459 * \fn Uint64 VT_Write(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
460 * \brief Write to a virtual terminal
462 Uint64 VT_Write(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
464 tVTerm *term = &gVT_Terminals[ Node->Inode ];
472 VT_int_PutString(term, Buffer, Length);
478 size = term->Width*term->Height*4;
479 if( Offset > size ) {
480 Log_Notice("VTerm", "VT_Write: Offset (0x%llx) > FBSize (0x%x)",
484 if( Offset + Length > size ) {
485 Log_Notice("VTerm", "VT_Write: Offset+Length (0x%llx) > FBSize (0x%x)",
486 Offset+Length, size);
487 Length = size - Offset;
490 // Copy to the local cache
491 memcpy( (void*)((Uint)term->Buffer + (Uint)Offset), Buffer, Length );
493 // Update screen if needed
494 if( Node->Inode == giVT_CurrentTerminal )
496 // Fill entire screen?
497 if( giVT_RealWidth > term->Width || giVT_RealHeight > term->Height )
499 // No? :( Well, just center it
501 x = Offset/4; y = x / term->Width; x %= term->Width;
502 w = Length/4+x; h = w / term->Width; w %= term->Width;
504 x += (giVT_RealWidth - term->Width) / 2;
505 y += (giVT_RealHeight - term->Height) / 2;
508 VFS_WriteAt( giVT_OutputDevHandle,
509 (x + y * giVT_RealWidth)*4,
513 Buffer = (void*)( (Uint)Buffer + term->Width*4 );
519 return VFS_WriteAt( giVT_OutputDevHandle, Offset, Length, Buffer );
522 // Just pass on (for now)
523 // TODO: Handle locally too to ensure no information is lost on
524 // VT Switch (and to isolate terminals from each other)
525 case TERM_MODE_2DACCEL:
526 //case TERM_MODE_3DACCEL:
527 if( Node->Inode == giVT_CurrentTerminal )
529 VFS_Write( giVT_OutputDevHandle, Length, Buffer );
538 * \fn int VT_Terminal_IOCtl(tVFS_Node *Node, int Id, void *Data)
539 * \brief Call an IO Control on a virtual terminal
541 int VT_Terminal_IOCtl(tVFS_Node *Node, int Id, void *Data)
545 tVTerm *term = Node->ImplPtr;
546 ENTER("pNode iId pData", Node, Id, Data);
548 if(Id >= DRV_IOCTL_LOOKUP) {
549 // Only root can fiddle with graphics modes
550 // TODO: Remove this and replace with user ownership
551 if( Threads_GetUID() != 0 ) return -1;
558 LEAVE('i', DRV_TYPE_TERMINAL);
559 return DRV_TYPE_TERMINAL;
560 case DRV_IOCTL_IDENT:
561 memcpy(Data, "VT\0\0", 4);
564 case DRV_IOCTL_VERSION:
567 case DRV_IOCTL_LOOKUP:
571 // Get/Set the mode (and apply any changes)
572 case TERM_IOCTL_MODETYPE:
575 if( CheckMem(Data, sizeof(int)) == 0 ) {
579 Log_Log("VTerm", "VTerm %i mode set to %i", (int)Node->Inode, *iData);
581 // Update mode if needed
582 if( term->Mode != *iData
586 // Adjust for text mode
587 if( *iData == TERM_MODE_TEXT ) {
588 term->NewHeight *= giVT_CharHeight;
589 term->NewWidth *= giVT_CharWidth;
591 // Fill unchanged dimensions
592 if(term->NewHeight == 0) term->NewHeight = term->Height;
593 if(term->NewWidth == 0) term->NewWidth = term->Width;
595 VT_int_ChangeMode(term, *iData, term->NewWidth, term->NewHeight);
596 // Clear unapplied dimensions
601 // Update the screen dimensions
602 if(Node->Inode == giVT_CurrentTerminal)
603 VT_SetTerminal( giVT_CurrentTerminal );
605 LEAVE('i', term->Mode);
608 // Get/set the terminal width
609 case TERM_IOCTL_WIDTH:
611 if( CheckMem(Data, sizeof(int)) == 0 ) {
615 term->NewWidth = *iData;
618 ret = term->NewWidth;
619 else if( term->Mode == TERM_MODE_TEXT )
620 ret = term->TextWidth;
626 // Get/set the terminal height
627 case TERM_IOCTL_HEIGHT:
629 if( CheckMem(Data, sizeof(int)) == 0 ) {
633 term->NewHeight = *iData;
635 if( term->NewHeight )
636 ret = term->NewHeight;
637 else if( term->Mode == TERM_MODE_TEXT )
638 ret = term->TextHeight;
644 case TERM_IOCTL_FORCESHOW:
645 Log_Log("VTerm", "Thread %i forced VTerm %i to be shown",
646 Threads_GetTID(), (int)Node->Inode);
647 VT_SetTerminal( Node->Inode );
656 * \fn void VT_SetTerminal(int ID)
657 * \brief Set the current terminal
659 void VT_SetTerminal(int ID)
661 // Update current terminal ID
662 Log_Log("VTerm", "Changed terminal from %i to %i", giVT_CurrentTerminal, ID);
663 giVT_CurrentTerminal = ID;
664 gpVT_CurTerm = &gVT_Terminals[ID];
667 if( gpVT_CurTerm->Mode == TERM_MODE_TEXT && !(gpVT_CurTerm->Flags & VT_FLAG_HIDECSR) )
669 tVideo_IOCtl_Pos pos;
670 pos.x = (gpVT_CurTerm->WritePos - gpVT_CurTerm->ViewPos) % gpVT_CurTerm->TextWidth;
671 pos.y = (gpVT_CurTerm->WritePos - gpVT_CurTerm->ViewPos) / gpVT_CurTerm->TextWidth;
672 if( pos.x < gpVT_CurTerm->TextHeight )
673 VFS_IOCtl(giVT_OutputDevHandle, VIDEO_IOCTL_SETCURSOR, &pos);
676 if( gpVT_CurTerm->Mode == TERM_MODE_TEXT )
677 VT_SetMode( VIDEO_BUFFMT_TEXT );
679 VT_SetMode( VIDEO_BUFFMT_FRAMEBUFFER );
682 VT_int_UpdateScreen( &gVT_Terminals[ ID ], 1 );
686 * \fn void VT_KBCallBack(Uint32 Codepoint)
687 * \brief Called on keyboard interrupt
688 * \param Codepoint Pseudo-UTF32 character
690 * Handles a key press and sends the key code to the user's buffer.
691 * If the code creates a kernel-magic sequence, it is not passed to the
692 * user and is handled in-kernel.
694 void VT_KBCallBack(Uint32 Codepoint)
696 tVTerm *term = gpVT_CurTerm;
698 // How the hell did we get a codepoint of zero?
699 if(Codepoint == 0) return;
702 if( Codepoint & 0x80000000 )
704 Codepoint &= 0x7FFFFFFF;
708 case KEY_RSHIFT: gbVT_CtrlDown = 0; break;
709 case KEY_LSHIFT: gbVT_AltDown = 0; break;
711 case KEY_LALT: gbVT_AltDown &= ~1; break;
712 case KEY_RALT: gbVT_AltDown &= ~2; break;
713 case KEY_LCTRL: gbVT_CtrlDown &= ~1 break;
714 case KEY_RCTRL: gbVT_CtrlDown &= ~2; break;
722 #if !USE_CTRL_ALT // HACK: Use both shifts instead of Ctrl-Alt
723 case KEY_RSHIFT: gbVT_CtrlDown = 1; break;
724 case KEY_LSHIFT: gbVT_AltDown = 1; break;
726 case KEY_LALT: gbVT_AltDown |= 1; break;
727 case KEY_RALT: gbVT_AltDown |= 2; break;
728 case KEY_LCTRL: gbVT_CtrlDown |= 1; break;
729 case KEY_RCTRL: gbVT_CtrlDown |= 2; break;
733 if(!gbVT_AltDown || !gbVT_CtrlDown)
737 case KEY_F1: VT_SetTerminal(0); return;
738 case KEY_F2: VT_SetTerminal(1); return;
739 case KEY_F3: VT_SetTerminal(2); return;
740 case KEY_F4: VT_SetTerminal(3); return;
741 case KEY_F5: VT_SetTerminal(4); return;
742 case KEY_F6: VT_SetTerminal(5); return;
743 case KEY_F7: VT_SetTerminal(6); return;
744 case KEY_F8: VT_SetTerminal(7); return;
745 case KEY_F9: VT_SetTerminal(8); return;
746 case KEY_F10: VT_SetTerminal(9); return;
747 case KEY_F11: VT_SetTerminal(10); return;
748 case KEY_F12: VT_SetTerminal(11); return;
751 if( gpVT_CurTerm->ViewPos > gpVT_CurTerm->Width )
752 gpVT_CurTerm->ViewPos -= gpVT_CurTerm->Width;
754 gpVT_CurTerm->ViewPos = 0;
757 if( gpVT_CurTerm->ViewPos < gpVT_CurTerm->Width*gpVT_CurTerm->Height*(giVT_Scrollback-1) )
758 gpVT_CurTerm->ViewPos += gpVT_CurTerm->Width;
760 gpVT_CurTerm->ViewPos = gpVT_CurTerm->Width*gpVT_CurTerm->Height*(giVT_Scrollback-1);
766 if(term->Mode == TERM_MODE_TEXT)
771 // Ignore Modifer Keys
772 if(Codepoint > KEY_MODIFIERS) return;
774 // Get UTF-8/ANSI Encoding
778 buf[0] = '\x1B'; buf[1] = '['; buf[2] = 'D';
782 buf[0] = '\x1B'; buf[1] = '['; buf[2] = 'C';
786 buf[0] = '\x1B'; buf[1] = '['; buf[2] = 'A';
790 buf[0] = '\x1B'; buf[1] = '['; buf[2] = 'B';
795 buf[0] = '\x1B'; buf[1] = '['; buf[2] = '5'; // Some overline also
796 //len = 4; // Commented out until I'm sure
802 // Attempt to encode in UTF-8
804 len = WriteUTF8( buf, Codepoint );
806 Warning("Codepoint (%x) is unrepresentable in UTF-8", Codepoint);
812 // Unprintable / Don't Pass
817 if( MAX_INPUT_CHARS8 - term->InputWrite >= len )
818 memcpy( &term->InputBuffer[term->InputWrite], buf, len );
820 memcpy( &term->InputBuffer[term->InputWrite], buf, MAX_INPUT_CHARS8 - term->InputWrite );
821 memcpy( &term->InputBuffer[0], buf, len - (MAX_INPUT_CHARS8 - term->InputWrite) );
823 // Roll the buffer over
824 term->InputWrite += len;
825 term->InputWrite %= MAX_INPUT_CHARS8;
826 if( (term->InputWrite - term->InputRead + MAX_INPUT_CHARS8)%MAX_INPUT_CHARS8 < len ) {
827 term->InputRead = term->InputWrite + 1;
828 term->InputRead %= MAX_INPUT_CHARS8;
834 // Encode the raw UTF-32 Key
835 ((Uint32*)term->InputBuffer)[ term->InputWrite ] = Codepoint;
837 term->InputWrite %= MAX_INPUT_CHARS32;
838 if(term->InputRead == term->InputWrite) {
840 term->InputRead %= MAX_INPUT_CHARS32;
844 // Wake up the thread waiting on us
845 if( term->ReadingThread >= 0 ) {
846 Threads_WakeTID(term->ReadingThread);
851 * \fn void VT_int_ClearLine(tVTerm *Term, int Num)
852 * \brief Clears a line in a virtual terminal
854 void VT_int_ClearLine(tVTerm *Term, int Num)
857 tVT_Char *cell = &Term->Text[ Num*Term->TextWidth ];
858 if( Num < 0 || Num >= Term->TextHeight * (giVT_Scrollback + 1) ) return ;
859 //ENTER("pTerm iNum", Term, Num);
860 for( i = Term->TextWidth; i--; )
863 cell[ i ].Colour = Term->CurColour;
869 * \fn int VT_int_ParseEscape(tVTerm *Term, char *Buffer)
870 * \brief Parses a VT100 Escape code
872 int VT_int_ParseEscape(tVTerm *Term, char *Buffer)
877 int args[6] = {0,0,0,0};
885 if( '0' <= c && c <= '9' )
888 if(c == ';') c = Buffer[j++];
889 while('0' <= c && c <= '9') {
899 if( ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z'))
905 if(argc == 1) tmp = args[0];
908 if( Term->WritePos-(tmp-1) % Term->TextWidth == 0 )
909 Term->WritePos -= Term->WritePos % Term->TextWidth;
911 Term->WritePos -= tmp;
916 if(argc == 1) tmp = args[0];
918 if( (Term->WritePos + tmp) % Term->TextWidth == 0 ) {
919 Term->WritePos -= Term->WritePos % Term->TextWidth;
920 Term->WritePos += Term->TextWidth - 1;
922 Term->WritePos += tmp;
932 int i = Term->TextHeight * (giVT_Scrollback + 1);
933 while( i-- ) VT_int_ClearLine(Term, i);
936 VT_int_UpdateScreen(Term, 1);
941 // Set cursor position
943 Term->WritePos = args[0] + args[1]*Term->TextWidth;
944 Log_Debug("VTerm", "args = {%i, %i}", args[0], args[1]);
951 if( 0 <= args[argc] && args[argc] <= 8)
955 case 0: Term->CurColour = DEFAULT_COLOUR; break; // Reset
956 case 1: Term->CurColour |= 0x80000000; break; // Bright
957 case 2: Term->CurColour &= ~0x80000000; break; // Dim
961 else if(30 <= args[argc] && args[argc] <= 37) {
962 Term->CurColour &= 0xF000FFFF;
963 Term->CurColour |= (Uint32)caVT100Colours[ args[argc]-30+(Term->CurColour>>28) ] << 16;
966 else if(40 <= args[argc] && args[argc] <= 47) {
967 Term->CurColour &= 0xFFFF8000;
968 Term->CurColour |= caVT100Colours[ args[argc]-40+((Term->CurColour>>12)&15) ];
973 Log_Warning("VTerm", "Unknown control sequence");
982 //Log_Debug("VTerm", "j = %i, Buffer = '%s'", j, Buffer);
987 * \fn void VT_int_PutString(tVTerm *Term, Uint8 *Buffer, Uint Count)
988 * \brief Print a string to the Virtual Terminal
990 void VT_int_PutString(tVTerm *Term, Uint8 *Buffer, Uint Count)
996 for( i = 0; i < Count; i++ )
998 // Handle escape sequences
999 if( Buffer[i] == 0x1B )
1002 i += VT_int_ParseEscape(Term, (char*)&Buffer[i]) - 1;
1006 // Fast check for non UTF-8
1007 if( Buffer[i] < 128 ) // Plain ASCII
1008 VT_int_PutChar(Term, Buffer[i]);
1010 i += ReadUTF8(&Buffer[i], &val) - 1;
1011 VT_int_PutChar(Term, val);
1015 VT_int_UpdateScreen( Term, 0 );
1018 if( Term == gpVT_CurTerm && !(Term->Flags & VT_FLAG_HIDECSR) )
1020 tVideo_IOCtl_Pos pos;
1021 pos.x = (Term->WritePos - Term->ViewPos) % Term->TextWidth;
1022 pos.y = (Term->WritePos - Term->ViewPos) / Term->TextWidth;
1023 VFS_IOCtl(giVT_OutputDevHandle, VIDEO_IOCTL_SETCURSOR, &pos);
1028 * \fn void VT_int_PutChar(tVTerm *Term, Uint32 Ch)
1029 * \brief Write a single character to a VTerm
1031 void VT_int_PutChar(tVTerm *Term, Uint32 Ch)
1037 case '\0': return; // Ignore NULL byte
1039 VT_int_UpdateScreen( Term, 0 ); // Update the line before newlining
1040 Term->WritePos += Term->TextWidth;
1042 Term->WritePos -= Term->WritePos % Term->TextWidth;
1047 Term->Text[ Term->WritePos ].Ch = '\0';
1048 Term->Text[ Term->WritePos ].Colour = Term->CurColour;
1050 } while(Term->WritePos & 7);
1054 // Backspace is invalid at Offset 0
1055 if(Term->WritePos == 0) break;
1059 if(Term->Text[ Term->WritePos ].Ch != '\0') {
1060 Term->Text[ Term->WritePos ].Ch = 0;
1061 Term->Text[ Term->WritePos ].Colour = Term->CurColour;
1065 i = 7; // Limit it to 8
1067 Term->Text[ Term->WritePos ].Ch = 0;
1068 Term->Text[ Term->WritePos ].Colour = Term->CurColour;
1070 } while(Term->WritePos && i-- && Term->Text[ Term->WritePos ].Ch == '\0');
1071 if(Term->Text[ Term->WritePos ].Ch != '\0')
1076 Term->Text[ Term->WritePos ].Ch = Ch;
1077 Term->Text[ Term->WritePos ].Colour = Term->CurColour;
1083 // - Check if we need to scroll the entire scrollback buffer
1084 if(Term->WritePos >= Term->TextWidth*Term->TextHeight*(giVT_Scrollback+1))
1089 Term->WritePos -= Term->TextWidth;
1091 VT_int_UpdateScreen( Term, 0 );
1093 // Update view position
1094 base = Term->TextWidth*Term->TextHeight*(giVT_Scrollback);
1095 if(Term->ViewPos < base)
1096 Term->ViewPos += Term->Width;
1097 if(Term->ViewPos > base)
1098 Term->ViewPos = base;
1100 // Scroll terminal cache
1101 base = Term->TextWidth*(Term->TextHeight*(giVT_Scrollback+1)-1);
1104 &Term->Text[Term->TextWidth],
1105 base*sizeof(tVT_Char)
1109 for( i = 0; i < Term->TextWidth; i ++ )
1111 Term->Text[ base + i ].Ch = 0;
1112 Term->Text[ base + i ].Colour = Term->CurColour;
1115 VT_int_ScrollFramebuffer( Term );
1116 VT_int_UpdateScreen( Term, 0 );
1118 // Ok, so we only need to scroll the screen
1119 else if(Term->WritePos >= Term->ViewPos + Term->TextWidth*Term->TextHeight)
1121 //Debug("Term->WritePos (%i) >= %i",
1123 // Term->ViewPos + Term->Width*Term->Height
1125 //Debug("Scrolling screen only");
1127 // Update the last line
1128 Term->WritePos -= Term->TextWidth;
1129 VT_int_UpdateScreen( Term, 0 );
1130 Term->WritePos += Term->TextWidth;
1131 VT_int_ClearLine(Term, Term->WritePos / Term->TextWidth);
1134 Term->ViewPos += Term->TextWidth;
1135 //Debug("Term->ViewPos = %i", Term->ViewPos);
1136 VT_int_ScrollFramebuffer( Term );
1137 VT_int_UpdateScreen( Term, 0 );
1144 * \fn void VT_int_ScrollFramebuffer( tVTerm *Term )
1145 * \note Scrolls the framebuffer by 1 text line
1147 void VT_int_ScrollFramebuffer( tVTerm *Term )
1157 // Only update if this is the current terminal
1158 if( Term != gpVT_CurTerm ) return;
1160 // Switch to 2D Command Stream
1161 tmp = VIDEO_BUFFMT_2DSTREAM;
1162 VFS_IOCtl(giVT_OutputDevHandle, VIDEO_IOCTL_SETBUFFORMAT, &tmp);
1164 // BLIT from 0,0 to 0,giVT_CharHeight
1165 buf.Op = VIDEO_2DOP_BLIT;
1166 buf.DstX = 0; buf.DstY = 0;
1167 buf.SrcX = 0; buf.SrcY = giVT_CharHeight;
1168 buf.W = Term->TextWidth * giVT_CharWidth;
1169 buf.H = (Term->TextHeight-1) * giVT_CharHeight;
1170 VFS_WriteAt(giVT_OutputDevHandle, 0, sizeof(buf), &buf);
1172 // Restore old mode (this function is only called during text mode)
1173 tmp = VIDEO_BUFFMT_TEXT;
1174 VFS_IOCtl(giVT_OutputDevHandle, VIDEO_IOCTL_SETBUFFORMAT, &tmp);
1178 * \fn void VT_int_UpdateScreen( tVTerm *Term, int UpdateAll )
1179 * \brief Updates the video framebuffer
1181 void VT_int_UpdateScreen( tVTerm *Term, int UpdateAll )
1183 // Only update if this is the current terminal
1184 if( Term != gpVT_CurTerm ) return;
1186 switch( Term->Mode )
1188 case TERM_MODE_TEXT:
1189 // Re copy the entire screen?
1192 giVT_OutputDevHandle,
1194 Term->TextWidth*Term->TextHeight*sizeof(tVT_Char),
1195 &Term->Text[Term->ViewPos]
1198 // Only copy the current line
1200 int pos = Term->WritePos - Term->WritePos % Term->TextWidth;
1202 giVT_OutputDevHandle,
1203 (pos - Term->ViewPos)*sizeof(tVT_Char),
1204 Term->TextWidth*sizeof(tVT_Char),
1211 giVT_OutputDevHandle,
1213 Term->Width*Term->Height*sizeof(Uint32),
1221 * \brief Update the screen mode
1222 * \param Term Terminal to update
1223 * \param NewMode New mode to set
1224 * \param NewWidth New framebuffer width
1225 * \param NewHeight New framebuffer height
1227 void VT_int_ChangeMode(tVTerm *Term, int NewMode, int NewWidth, int NewHeight)
1229 int oldW = Term->Width;
1230 int oldTW = oldW / giVT_CharWidth;
1231 int oldH = Term->Height;
1232 int oldTH = oldH / giVT_CharWidth;
1233 tVT_Char *oldTBuf = Term->Text;
1234 Uint32 *oldFB = Term->Buffer;
1237 // TODO: Increase RealWidth/RealHeight when this happens
1238 if(NewWidth > giVT_RealWidth) NewWidth = giVT_RealWidth;
1239 if(NewHeight > giVT_RealHeight) NewHeight = giVT_RealHeight;
1241 // Calculate new dimensions
1242 Term->TextWidth = NewWidth / giVT_CharWidth;
1243 Term->TextHeight = NewHeight / giVT_CharHeight;
1244 Term->Width = NewWidth;
1245 Term->Height = NewHeight;
1246 Term->Mode = NewMode;
1248 // Allocate new buffers
1250 Term->Text = calloc(
1251 Term->TextWidth * Term->TextHeight * (giVT_Scrollback+1),
1257 if( w > Term->TextWidth ) w = Term->TextWidth;
1259 if( h > Term->TextHeight ) h = Term->TextHeight;
1260 h *= giVT_Scrollback + 1;
1261 for( i = 0; i < h; i ++ )
1264 &Term->Text[i*Term->TextWidth],
1273 Term->Buffer = calloc( Term->Width * Term->Height, sizeof(Uint32) );
1277 if( w > Term->Width ) w = Term->Width;
1279 if( h > Term->Height ) h = Term->Height;
1280 for( i = 0; i < h; i ++ )
1283 &Term->Buffer[i*Term->Width],
1294 case TERM_MODE_TEXT:
1295 Log_Log("VTerm", "Set VT %p to text mode (%ix%i)",
1296 Term, Term->TextWidth, Term->TextHeight);
1299 Log_Log("VTerm", "Set VT %p to framebuffer mode (%ix%i)",
1300 Term, Term->Width, Term->Height);
1302 //case TERM_MODE_2DACCEL:
1303 //case TERM_MODE_3DACCEL:
1311 #define MONOSPACE_FONT 10816
1313 #if MONOSPACE_FONT == 10808 // 8x8
1314 # include "vterm_font_8x8.h"
1315 #elif MONOSPACE_FONT == 10816 // 8x16
1316 # include "vterm_font_8x16.h"
1319 // === PROTOTYPES ===
1320 Uint8 *VT_Font_GetChar(Uint32 Codepoint);
1323 int giVT_CharWidth = FONT_WIDTH;
1324 int giVT_CharHeight = FONT_HEIGHT;
1328 * \fn void VT_Font_Render(Uint32 Codepoint, void *Buffer, int Pitch, Uint32 BGC, Uint32 FGC)
1329 * \brief Render a font character
1331 void VT_Font_Render(Uint32 Codepoint, void *Buffer, int Pitch, Uint32 BGC, Uint32 FGC)
1334 Uint32 *buf = Buffer;
1337 font = VT_Font_GetChar(Codepoint);
1339 for(y = 0; y < FONT_HEIGHT; y ++)
1341 for(x = 0; x < FONT_WIDTH; x ++)
1343 if(*font & (1 << (FONT_WIDTH-x-1)))
1354 * \fn Uint32 VT_Colour12to24(Uint16 Col12)
1357 Uint32 VT_Colour12to24(Uint16 Col12)
1362 ret = (tmp << 0) | (tmp << 4);
1363 tmp = (Col12 & 0xF0) >> 4;
1364 ret |= (tmp << 8) | (tmp << 12);
1365 tmp = (Col12 & 0xF00) >> 8;
1366 ret |= (tmp << 16) | (tmp << 20);
1371 * \fn Uint8 *VT_Font_GetChar(Uint32 Codepoint)
1372 * \brief Gets an index into the font array given a Unicode Codepoint
1373 * \note See http://en.wikipedia.org/wiki/CP437
1375 Uint8 *VT_Font_GetChar(Uint32 Codepoint)
1379 return &VTermFont[Codepoint*FONT_HEIGHT];
1382 case 0xC7: index = 128; break; // Ç
1383 case 0xFC: index = 129; break; // ü
1384 case 0xE9: index = 130; break; // é
1385 case 0xE2: index = 131; break; // â
1386 case 0xE4: index = 132; break; // ä
1387 case 0xE0: index = 133; break; // à
1388 case 0xE5: index = 134; break; // å
1389 case 0xE7: index = 135; break; // ç
1390 case 0xEA: index = 136; break; // ê
1391 case 0xEB: index = 137; break; // ë
1392 case 0xE8: index = 138; break; // è
1393 case 0xEF: index = 139; break; // ï
1394 case 0xEE: index = 140; break; // î
1395 case 0xEC: index = 141; break; // ì
1396 case 0xC4: index = 142; break; // Ä
1397 case 0xC5: index = 143; break; // Å
1400 return &VTermFont[index*FONT_HEIGHT];
1403 EXPORTAS(&giVT_CharWidth, giVT_CharWidth);
1404 EXPORTAS(&giVT_CharHeight, giVT_CharHeight);
1405 EXPORT(VT_Font_Render);
1406 EXPORT(VT_Colour12to24);