2 * Acess2 Virtual Terminal Driver
8 #include <api_drv_video.h>
9 #include <api_drv_keyboard.h>
10 #include <api_drv_terminal.h>
12 #include <semaphore.h>
15 #define VERSION ((0<<8)|(50))
18 #define MAX_INPUT_CHARS32 64
19 #define MAX_INPUT_CHARS8 (MAX_INPUT_CHARS32*4)
20 //#define DEFAULT_OUTPUT "BochsGA"
21 #define DEFAULT_OUTPUT "Vesa"
22 #define FALLBACK_OUTPUT "x86_VGAText"
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_SCROLLBACK 0
28 #define DEFAULT_COLOUR (VT_COL_BLACK|(0xAAA<<16))
30 #define VT_FLAG_HIDECSR 0x01
31 #define VT_FLAG_ALTBUF 0x02 //!< Alternate screen buffer
32 #define VT_FLAG_RAWIN 0x04 //!< Don't handle ^Z/^C/^V
33 #define VT_FLAG_HASFB 0x10 //!< Set if the VTerm has requested the Framebuffer
34 #define VT_FLAG_SHOWCSR 0x20 //!< Always show the text cursor
37 VT_INMODE_TEXT8, // UTF-8 Text Mode (VT100/xterm Emulation)
38 VT_INMODE_TEXT32, // UTF-32 Text Mode (Acess Native)
44 int Mode; //!< Current Mode (see ::eTplTerminal_Modes)
45 int Flags; //!< Flags (see VT_FLAG_*)
47 short NewWidth; //!< Un-applied dimensions (Width)
48 short NewHeight; //!< Un-applied dimensions (Height)
49 short Width; //!< Virtual Width
50 short Height; //!< Virtual Height
51 short TextWidth; //!< Text Virtual Width
52 short TextHeight; //!< Text Virtual Height
54 Uint32 CurColour; //!< Current Text Colour
56 int ViewPos; //!< View Buffer Offset (Text Only)
57 int WritePos; //!< Write Buffer Offset (Text Only)
60 tVT_Char *AltBuf; //!< Alternate Screen Buffer
61 int AltWritePos; //!< Alternate write position
62 short ScrollTop; //!< Top of scrolling region (smallest)
63 short ScrollHeight; //!< Length of scrolling region
68 tMutex ReadingLock; //!< Lock the VTerm when a process is reading from it
69 tTID ReadingThread; //!< Owner of the lock
70 int InputRead; //!< Input buffer read position
71 int InputWrite; //!< Input buffer write position
72 char InputBuffer[MAX_INPUT_CHARS8];
73 // tSemaphore InputSemaphore;
77 // TODO: Do I need to keep this about?
78 // When should it be deallocated? on move to text mode, or some other time
79 // Call set again, it's freed, and if NULL it doesn't get reallocated.
80 tVideo_IOCtl_Bitmap *VideoCursor;
82 char Name[2]; //!< Name of the terminal
87 extern void Debug_SetKTerminal(const char *File);
90 int VT_Install(char **Arguments);
91 void VT_InitOutput(void);
92 void VT_InitInput(void);
93 char *VT_ReadDir(tVFS_Node *Node, int Pos);
94 tVFS_Node *VT_FindDir(tVFS_Node *Node, const char *Name);
95 int VT_Root_IOCtl(tVFS_Node *Node, int Id, void *Data);
96 Uint64 VT_Read(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer);
97 Uint64 VT_Write(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer);
98 int VT_Terminal_IOCtl(tVFS_Node *Node, int Id, void *Data);
99 void VT_SetResolution(int Width, int Height);
100 void VT_SetMode(int Mode);
101 void VT_SetTerminal(int ID);
102 void VT_KBCallBack(Uint32 Codepoint);
103 void VT_int_PutString(tVTerm *Term, Uint8 *Buffer, Uint Count);
104 void VT_int_ClearLine(tVTerm *Term, int Num);
105 void VT_int_ParseEscape_StandardLarge(tVTerm *Term, char CmdChar, int argc, int *args);
106 int VT_int_ParseEscape(tVTerm *Term, char *Buffer);
107 void VT_int_PutChar(tVTerm *Term, Uint32 Ch);
108 void VT_int_ScrollText(tVTerm *Term, int Count);
109 void VT_int_ScrollFramebuffer( tVTerm *Term, int Count );
110 void VT_int_UpdateCursor( tVTerm *Term, int bShow );
111 void VT_int_UpdateScreen( tVTerm *Term, int UpdateAll );
112 void VT_int_ChangeMode(tVTerm *Term, int NewMode, int NewWidth, int NewHeight);
113 void VT_int_ToggleAltBuffer(tVTerm *Term, int Enabled);
116 const Uint16 caVT100Colours[] = {
117 // Black, Red, Green, Yellow, Blue, Purple, Cyan, Gray
118 // Same again, but bright
119 VT_COL_BLACK, 0x700, 0x070, 0x770, 0x007, 0x707, 0x077, 0xAAA,
120 VT_COL_GREY, 0xF00, 0x0F0, 0xFF0, 0x00F, 0xF0F, 0x0FF, VT_COL_WHITE
124 MODULE_DEFINE(0, VERSION, VTerm, VT_Install, NULL, DEFAULT_INPUT, NULL);
125 tDevFS_Driver gVT_DrvInfo = {
128 .Flags = VFS_FFLAG_DIRECTORY,
132 .ReadDir = VT_ReadDir,
133 .FindDir = VT_FindDir,
134 .IOCtl = VT_Root_IOCtl
138 tVTerm gVT_Terminals[NUM_VTS];
139 int giVT_CurrentTerminal = 0;
140 tVTerm *gpVT_CurTerm = &gVT_Terminals[0];
141 // --- Video State ---
142 short giVT_RealWidth = DEFAULT_WIDTH; //!< Screen Width
143 short giVT_RealHeight = DEFAULT_HEIGHT; //!< Screen Height
144 int giVT_Scrollback = DEFAULT_SCROLLBACK;
145 // --- Driver Handles ---
146 char *gsVT_OutputDevice = NULL;
147 char *gsVT_InputDevice = NULL;
148 int giVT_OutputDevHandle = -2;
149 int giVT_InputDevHandle = -2;
150 // --- Key States --- (Used for VT Switching/Magic Combos)
151 int gbVT_CtrlDown = 0;
152 int gbVT_AltDown = 0;
153 int gbVT_SysrqDown = 0;
157 * \fn int VT_Install(char **Arguments)
158 * \brief Installs the Virtual Terminal Driver
160 int VT_Install(char **Arguments)
169 for(args = Arguments; (arg = *args); args++ )
171 char data[strlen(arg)+1];
175 val = strchr(arg, '=');
178 data[ val - arg ] = '\0';
181 Log_Debug("VTerm", "Argument '%s'", arg);
183 if( strcmp(opt, "Video") == 0 ) {
184 if( !gsVT_OutputDevice )
185 gsVT_OutputDevice = strdup(val);
187 else if( strcmp(opt, "Input") == 0 ) {
188 if( !gsVT_InputDevice )
189 gsVT_InputDevice = strdup(val);
191 else if( strcmp(opt, "Width") == 0 ) {
192 giVT_RealWidth = atoi( val );
194 else if( strcmp(opt, "Height") == 0 ) {
195 giVT_RealHeight = atoi( val );
197 else if( strcmp(opt, "Scrollback") == 0 ) {
198 giVT_Scrollback = atoi( val );
204 if(!gsVT_OutputDevice) gsVT_OutputDevice = (char*)DEFAULT_OUTPUT;
205 else if( Module_EnsureLoaded( gsVT_OutputDevice ) ) gsVT_OutputDevice = (char*)DEFAULT_OUTPUT;
206 if( Module_EnsureLoaded( gsVT_OutputDevice ) ) gsVT_OutputDevice = (char*)FALLBACK_OUTPUT;
207 if( Module_EnsureLoaded( gsVT_OutputDevice ) ) {
208 Log_Error("VTerm", "Fallback video '%s' is not avaliable, giving up", FALLBACK_OUTPUT);
209 return MODULE_ERR_MISC;
212 if(!gsVT_InputDevice) gsVT_InputDevice = (char*)DEFAULT_INPUT;
213 else if( Module_EnsureLoaded( gsVT_InputDevice ) ) gsVT_InputDevice = (char*)DEFAULT_INPUT;
215 // Create device paths
218 tmp = malloc( 9 + strlen(gsVT_OutputDevice) + 1 );
219 strcpy(tmp, "/Devices/");
220 strcpy(&tmp[9], gsVT_OutputDevice);
221 gsVT_OutputDevice = tmp;
223 tmp = malloc( 9 + strlen(gsVT_InputDevice) + 1 );
224 strcpy(tmp, "/Devices/");
225 strcpy(&tmp[9], gsVT_InputDevice);
226 gsVT_InputDevice = tmp;
229 Log_Log("VTerm", "Using '%s' as output", gsVT_OutputDevice);
230 Log_Log("VTerm", "Using '%s' as input", gsVT_InputDevice);
236 for( i = 0; i < NUM_VTS; i++ )
238 gVT_Terminals[i].Mode = TERM_MODE_TEXT;
239 // gVT_Terminals[i].Flags = 0;
240 gVT_Terminals[i].Flags = VT_FLAG_HIDECSR; //HACK - Stop all those memcpy calls
241 gVT_Terminals[i].CurColour = DEFAULT_COLOUR;
242 gVT_Terminals[i].WritePos = 0;
243 gVT_Terminals[i].AltWritePos = 0;
244 gVT_Terminals[i].ViewPos = 0;
245 gVT_Terminals[i].ReadingThread = -1;
246 gVT_Terminals[i].ScrollHeight = 0;
249 VT_int_ChangeMode( &gVT_Terminals[i],
250 TERM_MODE_TEXT, giVT_RealWidth, giVT_RealHeight );
252 gVT_Terminals[i].Name[0] = '0'+i;
253 gVT_Terminals[i].Name[1] = '\0';
254 gVT_Terminals[i].Node.Inode = i;
255 gVT_Terminals[i].Node.ImplPtr = &gVT_Terminals[i];
256 gVT_Terminals[i].Node.NumACLs = 0; // Only root can open virtual terminals
258 gVT_Terminals[i].Node.Read = VT_Read;
259 gVT_Terminals[i].Node.Write = VT_Write;
260 gVT_Terminals[i].Node.IOCtl = VT_Terminal_IOCtl;
261 // Semaphore_Init(&gVT_Terminals[i].InputSemaphore, 0, MAX_INPUT_CHARS8, "VTerm", gVT_Terminals[i].Name);
265 DevFS_AddDevice( &gVT_DrvInfo );
267 // Set kernel output to VT0
268 Debug_SetKTerminal("/Devices/VTerm/0");
270 return MODULE_ERR_OK;
274 * \fn void VT_InitOutput()
275 * \brief Initialise Video Output
279 giVT_OutputDevHandle = VFS_Open(gsVT_OutputDevice, VFS_OPENFLAG_WRITE);
280 if(giVT_OutputDevHandle == -1) {
281 Log_Warning("VTerm", "Oh F**k, I can't open the video device '%s'", gsVT_OutputDevice);
284 VT_SetResolution( giVT_RealWidth, giVT_RealHeight );
286 VT_SetMode( VIDEO_BUFFMT_TEXT );
290 * \fn void VT_InitInput()
291 * \brief Initialises the input
295 giVT_InputDevHandle = VFS_Open(gsVT_InputDevice, VFS_OPENFLAG_READ);
296 if(giVT_InputDevHandle == -1) {
297 Log_Warning("VTerm", "Can't open the input device '%s'", gsVT_InputDevice);
300 VFS_IOCtl(giVT_InputDevHandle, KB_IOCTL_SETCALLBACK, VT_KBCallBack);
304 * \brief Set the video resolution
305 * \param Width New screen width
306 * \param Height New screen height
308 void VT_SetResolution(int Width, int Height)
310 tVideo_IOCtl_Mode mode = {0};
314 // Create the video mode
316 mode.height = Height;
321 VFS_IOCtl( giVT_OutputDevHandle, VIDEO_IOCTL_FINDMODE, &mode );
323 if( Width != mode.width || Height != mode.height )
326 "Selected resolution (%ix%i is not supported) by the device, using (%ix%i)",
327 giVT_RealWidth, giVT_RealHeight,
328 mode.width, mode.height
330 giVT_RealWidth = mode.width;
331 giVT_RealHeight = mode.height;
333 VFS_IOCtl( giVT_OutputDevHandle, VIDEO_IOCTL_GETSETMODE, &tmp );
335 // Resize text terminals if needed
336 if( gVT_Terminals[0].Text && (giVT_RealWidth != mode.width || giVT_RealHeight != mode.height) )
338 int newBufSize = (giVT_RealWidth/giVT_CharWidth)
339 *(giVT_RealHeight/giVT_CharHeight)
340 *(giVT_Scrollback+1);
342 // Resize the text terminals
343 Log_Debug("VTerm", "Resizing terminals to %ix%i",
344 giVT_RealWidth/giVT_CharWidth, giVT_RealHeight/giVT_CharHeight);
345 for( i = 0; i < NUM_VTS; i ++ )
347 if( gVT_Terminals[i].Mode != TERM_MODE_TEXT ) continue;
349 gVT_Terminals[i].TextWidth = giVT_RealWidth/giVT_CharWidth;
350 gVT_Terminals[i].TextHeight = giVT_RealHeight/giVT_CharHeight;
351 gVT_Terminals[i].ScrollHeight = gVT_Terminals[i].TextHeight;
353 gVT_Terminals[i].Text = realloc(
354 gVT_Terminals[i].Text,
355 newBufSize*sizeof(tVT_Char)
362 * \brief Set video output buffer mode
364 void VT_SetMode(int Mode)
366 VFS_IOCtl( giVT_OutputDevHandle, VIDEO_IOCTL_SETBUFFORMAT, &Mode );
370 * \fn char *VT_ReadDir(tVFS_Node *Node, int Pos)
371 * \brief Read from the VTerm Directory
373 char *VT_ReadDir(tVFS_Node *Node, int Pos)
375 if(Pos < 0) return NULL;
376 if(Pos >= NUM_VTS) return NULL;
377 return strdup( gVT_Terminals[Pos].Name );
381 * \fn tVFS_Node *VT_FindDir(tVFS_Node *Node, const char *Name)
382 * \brief Find an item in the VTerm directory
383 * \param Node Root node
384 * \param Name Name (number) of the terminal
386 tVFS_Node *VT_FindDir(tVFS_Node *Node, const char *Name)
390 ENTER("pNode sName", Node, Name);
392 // Open the input and output files if needed
393 if(giVT_OutputDevHandle == -2) VT_InitOutput();
394 if(giVT_InputDevHandle == -2) VT_InitInput();
397 if(Name[0] < '0' || Name[0] > '9' || Name[1] != '\0') {
408 LEAVE('p', &gVT_Terminals[num].Node);
409 return &gVT_Terminals[num].Node;
413 * \fn int VT_Root_IOCtl(tVFS_Node *Node, int Id, void *Data)
414 * \brief Control the VTerm Driver
416 int VT_Root_IOCtl(tVFS_Node *Node, int Id, void *Data)
421 case DRV_IOCTL_TYPE: return DRV_TYPE_MISC;
422 case DRV_IOCTL_IDENT: memcpy(Data, "VT\0\0", 4); return 0;
423 case DRV_IOCTL_VERSION: return VERSION;
424 case DRV_IOCTL_LOOKUP: return 0;
426 case 4: // Get Video Driver
427 if(Data) strcpy(Data, gsVT_OutputDevice);
428 return strlen(gsVT_OutputDevice);
430 case 5: // Set Video Driver
431 if(!Data) return -EINVAL;
432 if(Threads_GetUID() != 0) return -EACCES;
436 // TODO: Check if the string used is a heap string
438 free(gsVT_OutputDevice);
440 gsVT_OutputDevice = malloc(len+1);
441 strcpy(gsVT_OutputDevice, Data);
443 VFS_Close(giVT_OutputDevHandle);
444 giVT_OutputDevHandle = -1;
453 * \brief Read from a virtual terminal
455 Uint64 VT_Read(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
459 tVTerm *term = &gVT_Terminals[ Node->Inode ];
460 Uint32 *codepoint_buf = Buffer;
461 Uint32 *codepoint_in;
463 Mutex_Acquire( &term->ReadingLock );
466 VT_int_UpdateCursor(term, 1);
468 // Check current mode
473 VFS_SelectNode(Node, VFS_SELECT_READ, NULL, "VT_Read (UTF-8)");
475 avail = term->InputWrite - term->InputRead;
477 avail += MAX_INPUT_CHARS8;
478 if(avail > Length - pos)
479 avail = Length - pos;
483 ((char*)Buffer)[pos] = term->InputBuffer[term->InputRead];
486 while(term->InputRead > MAX_INPUT_CHARS8)
487 term->InputRead -= MAX_INPUT_CHARS8;
494 VFS_SelectNode(Node, VFS_SELECT_READ, NULL, "VT_Read (UCS-4)");
496 avail = term->InputWrite - term->InputRead;
498 avail += MAX_INPUT_CHARS32;
499 if(avail > Length - pos)
500 avail = Length/4 - pos;
502 codepoint_in = (void*)term->InputBuffer;
503 codepoint_buf = Buffer;
507 codepoint_buf[pos] = codepoint_in[term->InputRead];
510 while(term->InputRead > MAX_INPUT_CHARS32)
511 term->InputRead -= MAX_INPUT_CHARS32;
517 // Mark none avaliable if buffer empty
518 if( term->InputRead == term->InputWrite )
519 VFS_MarkAvaliable(&term->Node, 0);
521 term->ReadingThread = -1;
523 // VT_int_UpdateCursor(term, term->Mode == TERM_MODE_TEXT);
525 Mutex_Release( &term->ReadingLock );
531 * \fn Uint64 VT_Write(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
532 * \brief Write to a virtual terminal
534 Uint64 VT_Write(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
536 tVTerm *term = &gVT_Terminals[ Node->Inode ];
544 VT_int_PutString(term, Buffer, Length);
550 size = term->Width*term->Height*4;
551 if( Offset > size ) {
552 Log_Notice("VTerm", "VT_Write: Offset (0x%llx) > FBSize (0x%x)",
556 if( Offset + Length > size ) {
557 Log_Notice("VTerm", "VT_Write: Offset+Length (0x%llx) > FBSize (0x%x)",
558 Offset+Length, size);
559 Length = size - Offset;
562 // Update screen if needed
563 if( Node->Inode == giVT_CurrentTerminal )
565 if( giVT_RealHeight > term->Height )
566 Offset += (giVT_RealHeight - term->Height) / 2 * term->Width * 4;
567 // Handle undersized virtual terminals
568 if( giVT_RealWidth > term->Width )
570 // No? :( Well, just center it
573 // TODO: Fix to handle the final line correctly?
574 x = Offset/4; y = x / term->Width; x %= term->Width;
575 w = Length/4+x; h = w / term->Width; w %= term->Width;
578 x += (giVT_RealWidth - term->Width) / 2;
579 dst_ofs = (x + y * giVT_RealWidth) * 4;
582 VFS_WriteAt( giVT_OutputDevHandle,
587 Buffer = (void*)( (Uint)Buffer + term->Width*4 );
588 dst_ofs += giVT_RealWidth * 4;
593 return VFS_WriteAt( giVT_OutputDevHandle, Offset, Length, Buffer );
599 term->Buffer = malloc( term->Width * term->Height * 4 );
600 // Copy to the local cache
601 memcpy( (char*)term->Buffer + (Uint)Offset, Buffer, Length );
604 // Just pass on (for now)
605 // TODO: Handle locally too to ensure no information is lost on
606 // VT Switch (and to isolate terminals from each other)
607 case TERM_MODE_2DACCEL:
608 //case TERM_MODE_3DACCEL:
609 if( Node->Inode == giVT_CurrentTerminal )
611 VFS_Write( giVT_OutputDevHandle, Length, Buffer );
620 * \fn int VT_Terminal_IOCtl(tVFS_Node *Node, int Id, void *Data)
621 * \brief Call an IO Control on a virtual terminal
623 int VT_Terminal_IOCtl(tVFS_Node *Node, int Id, void *Data)
627 tVTerm *term = Node->ImplPtr;
628 ENTER("pNode iId pData", Node, Id, Data);
630 if(Id >= DRV_IOCTL_LOOKUP) {
631 // Only root can fiddle with graphics modes
632 // TODO: Remove this and replace with user ownership
633 if( Threads_GetUID() != 0 ) return -1;
640 LEAVE('i', DRV_TYPE_TERMINAL);
641 return DRV_TYPE_TERMINAL;
642 case DRV_IOCTL_IDENT:
643 memcpy(Data, "VT\0\0", 4);
646 case DRV_IOCTL_VERSION:
649 case DRV_IOCTL_LOOKUP:
653 // Get/Set the mode (and apply any changes)
654 case TERM_IOCTL_MODETYPE:
657 if( CheckMem(Data, sizeof(int)) == 0 ) {
661 Log_Log("VTerm", "VTerm %i mode set to %i", (int)Node->Inode, *iData);
663 // Update mode if needed
664 if( term->Mode != *iData || term->NewWidth || term->NewHeight)
666 // Adjust for text mode
667 if( *iData == TERM_MODE_TEXT ) {
668 term->NewHeight *= giVT_CharHeight;
669 term->NewWidth *= giVT_CharWidth;
671 // Fill unchanged dimensions
672 if(term->NewHeight == 0) term->NewHeight = term->Height;
673 if(term->NewWidth == 0) term->NewWidth = term->Width;
675 VT_int_ChangeMode(term, *iData, term->NewWidth, term->NewHeight);
676 // Clear unapplied dimensions
681 // Update the screen dimensions
682 if(Node->Inode == giVT_CurrentTerminal)
683 VT_SetTerminal( giVT_CurrentTerminal );
685 LEAVE('i', term->Mode);
688 // Get/set the terminal width
689 case TERM_IOCTL_WIDTH:
691 if( CheckMem(Data, sizeof(int)) == 0 ) {
695 term->NewWidth = *iData;
698 ret = term->NewWidth;
699 else if( term->Mode == TERM_MODE_TEXT )
700 ret = term->TextWidth;
706 // Get/set the terminal height
707 case TERM_IOCTL_HEIGHT:
709 if( CheckMem(Data, sizeof(int)) == 0 ) {
713 term->NewHeight = *iData;
715 if( term->NewHeight )
716 ret = term->NewHeight;
717 else if( term->Mode == TERM_MODE_TEXT )
718 ret = term->TextHeight;
724 case TERM_IOCTL_FORCESHOW:
725 Log_Log("VTerm", "Thread %i forced VTerm %i to be shown",
726 Threads_GetTID(), (int)Node->Inode);
727 VT_SetTerminal( Node->Inode );
731 case TERM_IOCTL_GETSETCURSOR:
734 tVideo_IOCtl_Pos *pos = Data;
735 if( !CheckMem(Data, sizeof(*pos)) ) {
741 if( term->Mode == TERM_MODE_TEXT )
743 if(term->Flags & VT_FLAG_ALTBUF)
744 term->AltWritePos = pos->x + pos->y * term->TextWidth;
746 term->WritePos = pos->x + pos->y * term->TextWidth + term->ViewPos;
747 VT_int_UpdateCursor(term, 0);
751 term->VideoCursorX = pos->x;
752 term->VideoCursorY = pos->y;
753 VT_int_UpdateCursor(term, 1);
756 ret = (term->Flags & VT_FLAG_ALTBUF) ? term->AltWritePos : term->WritePos-term->ViewPos;
760 case TERM_IOCTL_SETCURSORBITMAP: {
761 tVideo_IOCtl_Bitmap *bmp = Data;
764 free( term->VideoCursor );
765 term->VideoCursor = NULL;
770 // Sanity check bitmap
771 if( !CheckMem(bmp, sizeof(tVideo_IOCtl_Bitmap)) ) {
772 Log_Notice("VTerm", "%p in TERM_IOCTL_SETCURSORBITMAP invalid", bmp);
776 if( !CheckMem(bmp->Data, bmp->W*bmp->H*sizeof(Uint32)) ) {
777 Log_Notice("VTerm", "%p in TERM_IOCTL_SETCURSORBITMAP invalid", bmp);
782 // Reallocate if needed
783 if(term->VideoCursor)
785 if(bmp->W * bmp->H != term->VideoCursor->W * term->VideoCursor->H) {
786 free(term->VideoCursor);
787 term->VideoCursor = NULL;
790 if(!term->VideoCursor) {
791 term->VideoCursor = malloc(sizeof(tVideo_IOCtl_Pos) + bmp->W*bmp->H*sizeof(Uint32));
792 if(!term->VideoCursor) {
793 Log_Error("VTerm", "Unable to allocate memory for cursor");
799 memcpy(term->VideoCursor, bmp, sizeof(tVideo_IOCtl_Pos) + bmp->W*bmp->H*sizeof(Uint32));
801 Log_Debug("VTerm", "Set VT%i's cursor to %p %ix%i",
802 (int)term->Node.Inode, bmp, bmp->W, bmp->H);
804 if(gpVT_CurTerm == term)
805 VFS_IOCtl(giVT_OutputDevHandle, VIDEO_IOCTL_SETCURSORBITMAP, term->VideoCursor);
815 * \fn void VT_SetTerminal(int ID)
816 * \brief Set the current terminal
818 void VT_SetTerminal(int ID)
820 // Copy the screen state
821 if( ID != giVT_CurrentTerminal && gpVT_CurTerm->Mode != TERM_MODE_TEXT )
823 if( !gpVT_CurTerm->Buffer )
824 gpVT_CurTerm->Buffer = malloc( gpVT_CurTerm->Width*gpVT_CurTerm->Height*4 );
825 if( gpVT_CurTerm->Width < giVT_RealWidth )
829 Uint32 *dest = gpVT_CurTerm->Buffer;
830 // Slower scanline copy
831 for( line = 0; line < gpVT_CurTerm->Height; line ++ )
833 VFS_ReadAt(giVT_OutputDevHandle, ofs, gpVT_CurTerm->Width*4, dest);
834 ofs += giVT_RealWidth * 4;
835 dest += gpVT_CurTerm->Width;
840 VFS_ReadAt(giVT_OutputDevHandle,
841 0, gpVT_CurTerm->Height*giVT_RealWidth*4,
847 // Update current terminal ID
848 Log_Log("VTerm", "Changed terminal from %i to %i", giVT_CurrentTerminal, ID);
849 giVT_CurrentTerminal = ID;
850 gpVT_CurTerm = &gVT_Terminals[ID];
852 if( gpVT_CurTerm->Mode == TERM_MODE_TEXT )
854 VT_SetMode( VIDEO_BUFFMT_TEXT );
858 // Update the cursor image
859 if(gpVT_CurTerm->VideoCursor)
860 VFS_IOCtl(giVT_OutputDevHandle, VIDEO_IOCTL_SETCURSORBITMAP, gpVT_CurTerm->VideoCursor);
861 VT_SetMode( VIDEO_BUFFMT_FRAMEBUFFER );
864 if(gpVT_CurTerm->Buffer)
866 // TODO: Handle non equal sized
868 giVT_OutputDevHandle,
870 gpVT_CurTerm->Width*gpVT_CurTerm->Height*sizeof(Uint32),
875 VT_int_UpdateCursor(gpVT_CurTerm, 1);
877 // VT_int_UpdateScreen(gpVT_CurTerm, 1);
881 * \fn void VT_KBCallBack(Uint32 Codepoint)
882 * \brief Called on keyboard interrupt
883 * \param Codepoint Pseudo-UTF32 character
885 * Handles a key press and sends the key code to the user's buffer.
886 * If the code creates a kernel-magic sequence, it is not passed to the
887 * user and is handled in-kernel.
889 void VT_KBCallBack(Uint32 Codepoint)
891 tVTerm *term = gpVT_CurTerm;
893 // How the hell did we get a codepoint of zero?
894 if(Codepoint == 0) return;
897 if( Codepoint & 0x80000000 )
899 Codepoint &= 0x7FFFFFFF;
902 case KEY_LALT: gbVT_AltDown &= ~1; break;
903 case KEY_RALT: gbVT_AltDown &= ~2; break;
904 case KEY_LCTRL: gbVT_CtrlDown &= ~1; break;
905 case KEY_RCTRL: gbVT_CtrlDown &= ~2; break;
912 case KEY_LALT: gbVT_AltDown |= 1; break;
913 case KEY_RALT: gbVT_AltDown |= 2; break;
914 case KEY_LCTRL: gbVT_CtrlDown |= 1; break;
915 case KEY_RCTRL: gbVT_CtrlDown |= 2; break;
918 if(!gbVT_AltDown || !gbVT_CtrlDown)
922 case KEY_F1: VT_SetTerminal(0); return;
923 case KEY_F2: VT_SetTerminal(1); return;
924 case KEY_F3: VT_SetTerminal(2); return;
925 case KEY_F4: VT_SetTerminal(3); return;
926 case KEY_F5: VT_SetTerminal(4); return;
927 case KEY_F6: VT_SetTerminal(5); return;
928 case KEY_F7: VT_SetTerminal(6); return;
929 case KEY_F8: VT_SetTerminal(7); return;
930 case KEY_F9: VT_SetTerminal(8); return;
931 case KEY_F10: VT_SetTerminal(9); return;
932 case KEY_F11: VT_SetTerminal(10); return;
933 case KEY_F12: VT_SetTerminal(11); return;
936 if( gpVT_CurTerm->Flags & VT_FLAG_ALTBUF )
938 if( gpVT_CurTerm->ViewPos > gpVT_CurTerm->Width )
939 gpVT_CurTerm->ViewPos -= gpVT_CurTerm->Width;
941 gpVT_CurTerm->ViewPos = 0;
944 if( gpVT_CurTerm->Flags & VT_FLAG_ALTBUF )
946 if( gpVT_CurTerm->ViewPos < gpVT_CurTerm->Width*gpVT_CurTerm->Height*(giVT_Scrollback) )
947 gpVT_CurTerm->ViewPos += gpVT_CurTerm->Width;
949 gpVT_CurTerm->ViewPos = gpVT_CurTerm->Width*gpVT_CurTerm->Height*(giVT_Scrollback);
955 if(term->Mode == TERM_MODE_TEXT)
960 // Ignore Modifer Keys
961 if(Codepoint > KEY_MODIFIERS) return;
963 // Get UTF-8/ANSI Encoding
967 buf[0] = '\x1B'; buf[1] = '['; buf[2] = 'D';
971 buf[0] = '\x1B'; buf[1] = '['; buf[2] = 'C';
975 buf[0] = '\x1B'; buf[1] = '['; buf[2] = 'A';
979 buf[0] = '\x1B'; buf[1] = '['; buf[2] = 'B';
984 //buf[0] = '\x1B'; buf[1] = '['; buf[2] = '5'; // Some overline also
985 //len = 4; // Commented out until I'm sure
992 // Attempt to encode in UTF-8
994 len = WriteUTF8( buf, Codepoint );
996 Warning("Codepoint (%x) is unrepresentable in UTF-8", Codepoint);
1002 // Unprintable / Don't Pass
1007 // Handle meta characters
1008 if( !(term->Flags & VT_FLAG_RAWIN) )
1020 if( MAX_INPUT_CHARS8 - term->InputWrite >= len )
1021 memcpy( &term->InputBuffer[term->InputWrite], buf, len );
1023 memcpy( &term->InputBuffer[term->InputWrite], buf, MAX_INPUT_CHARS8 - term->InputWrite );
1024 memcpy( &term->InputBuffer[0], buf, len - (MAX_INPUT_CHARS8 - term->InputWrite) );
1026 // Roll the buffer over
1027 term->InputWrite += len;
1028 term->InputWrite %= MAX_INPUT_CHARS8;
1029 if( (term->InputWrite - term->InputRead + MAX_INPUT_CHARS8)%MAX_INPUT_CHARS8 < len ) {
1030 term->InputRead = term->InputWrite + 1;
1031 term->InputRead %= MAX_INPUT_CHARS8;
1036 // Encode the raw UTF-32 Key
1037 Uint32 *raw_in = (void*)term->InputBuffer;
1038 raw_in[ term->InputWrite ] = Codepoint;
1039 term->InputWrite ++;
1040 term->InputWrite %= MAX_INPUT_CHARS32;
1041 if(term->InputRead == term->InputWrite) {
1043 term->InputRead %= MAX_INPUT_CHARS32;
1047 VFS_MarkAvaliable(&term->Node, 1);
1051 * \brief Clears a line in a virtual terminal
1052 * \param Term Terminal to modify
1053 * \param Num Line number to clear
1055 void VT_int_ClearLine(tVTerm *Term, int Num)
1060 if( Num < 0 || Num >= Term->TextHeight * (giVT_Scrollback + 1) ) return ;
1062 cell = (Term->Flags & VT_FLAG_ALTBUF) ? Term->AltBuf : Term->Text;
1063 cell = &cell[ Num*Term->TextWidth ];
1065 for( i = Term->TextWidth; i--; )
1068 cell[ i ].Colour = Term->CurColour;
1073 * \brief Handle a standard large escape code
1075 * Handles any escape code of the form \x1B[n,...A where n is an integer
1076 * and A is any letter.
1078 void VT_int_ParseEscape_StandardLarge(tVTerm *Term, char CmdChar, int argc, int *args)
1088 if(argc == 1) tmp *= args[0];
1089 if( Term->Flags & VT_FLAG_ALTBUF )
1091 if( (Term->AltWritePos + tmp) % Term->TextWidth == 0 ) {
1092 Term->AltWritePos -= Term->AltWritePos % Term->TextWidth;
1093 Term->AltWritePos += Term->TextWidth - 1;
1096 Term->AltWritePos += tmp;
1100 if( (Term->WritePos + tmp) % Term->TextWidth == 0 ) {
1101 Term->WritePos -= Term->WritePos % Term->TextWidth;
1102 Term->WritePos += Term->TextWidth - 1;
1105 Term->WritePos += tmp;
1113 case 0: // Erase below
1115 case 1: // Erase above
1117 case 2: // Erase all
1118 if( Term->Flags & VT_FLAG_ALTBUF )
1120 int i = Term->TextHeight;
1121 while( i-- ) VT_int_ClearLine(Term, i);
1122 Term->AltWritePos = 0;
1123 VT_int_UpdateScreen(Term, 1);
1127 int i = Term->TextHeight * (giVT_Scrollback + 1);
1128 while( i-- ) VT_int_ClearLine(Term, i);
1131 VT_int_UpdateScreen(Term, 1);
1141 case 0: // Erase to right
1142 if( Term->Flags & VT_FLAG_ALTBUF )
1145 max = Term->Width - Term->AltWritePos % Term->Width;
1146 for( i = 0; i < max; i ++ )
1147 Term->AltBuf[Term->AltWritePos+i].Ch = 0;
1152 max = Term->Width - Term->WritePos % Term->Width;
1153 for( i = 0; i < max; i ++ )
1154 Term->Text[Term->WritePos+i].Ch = 0;
1156 VT_int_UpdateScreen(Term, 0);
1158 case 1: // Erase to left
1159 if( Term->Flags & VT_FLAG_ALTBUF )
1161 int i = Term->AltWritePos % Term->Width;
1163 Term->AltBuf[Term->AltWritePos++].Ch = 0;
1167 int i = Term->WritePos % Term->Width;
1169 Term->Text[Term->WritePos++].Ch = 0;
1171 VT_int_UpdateScreen(Term, 0);
1173 case 2: // Erase all
1174 if( Term->Flags & VT_FLAG_ALTBUF )
1176 VT_int_ClearLine(Term, Term->AltWritePos / Term->Width);
1180 VT_int_ClearLine(Term, Term->WritePos / Term->Width);
1182 VT_int_UpdateScreen(Term, 0);
1187 // Set cursor position
1189 if( Term->Flags & VT_FLAG_ALTBUF )
1190 Term->AltWritePos = args[0] + args[1]*Term->TextWidth;
1192 Term->WritePos = args[0] + args[1]*Term->TextWidth;
1193 //Log_Debug("VTerm", "args = {%i, %i}", args[0], args[1]);
1196 // Scroll up `n` lines
1199 // Scroll down `n` lines
1201 if(argc == 1) tmp *= args[0];
1202 if( Term->Flags & VT_FLAG_ALTBUF )
1203 VT_int_ScrollText(Term, tmp);
1206 if(Term->ViewPos/Term->TextWidth + tmp < 0)
1208 if(Term->ViewPos/Term->TextWidth + tmp > Term->TextHeight * (giVT_Scrollback + 1))
1211 Term->ViewPos += Term->TextWidth*tmp;
1221 if( 0 <= args[argc] && args[argc] <= 8)
1225 case 0: Term->CurColour = DEFAULT_COLOUR; break; // Reset
1226 case 1: Term->CurColour |= 0x80000000; break; // Bright
1227 case 2: Term->CurColour &= ~0x80000000; break; // Dim
1230 // Foreground Colour
1231 else if(30 <= args[argc] && args[argc] <= 37) {
1232 // Get colour index, accounting for bright bit
1233 colour_idx = args[argc]-30 + ((Term->CurColour>>28) & 8);
1234 Term->CurColour &= 0x8000FFFF;
1235 Term->CurColour |= (Uint32)caVT100Colours[ colour_idx ] << 16;
1237 // Background Colour
1238 else if(40 <= args[argc] && args[argc] <= 47) {
1239 // Get colour index, accounting for bright bit
1240 colour_idx = args[argc]-40 + ((Term->CurColour>>12) & 8);
1241 Term->CurColour &= 0xFFFF8000;
1242 Term->CurColour |= caVT100Colours[ colour_idx ];
1245 Log_Warning("VTerm", "Unknown font flag %i", args[argc]);
1250 // Set scrolling region
1252 if( argc != 2 ) break;
1253 Term->ScrollTop = args[0];
1254 Term->ScrollHeight = args[1] - args[0];
1258 Log_Warning("VTerm", "Unknown control sequence '\\x1B[%c'", CmdChar);
1264 * \fn int VT_int_ParseEscape(tVTerm *Term, char *Buffer)
1265 * \brief Parses a VT100 Escape code
1267 int VT_int_ParseEscape(tVTerm *Term, char *Buffer)
1270 int argc = 0, j = 1;
1271 int args[6] = {0,0,0,0};
1272 int bQuestionMark = 0;
1284 if( '0' <= c && c <= '9' )
1287 if(c == ';') c = Buffer[j++];
1288 while('0' <= c && c <= '9') {
1290 args[argc] += c-'0';
1298 if( ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z'))
1304 // DEC Private Mode Set
1306 if(argc != 1) break;
1310 VT_int_ToggleAltBuffer(Term, 1);
1315 if(argc != 1) break;
1319 VT_int_ToggleAltBuffer(Term, 0);
1324 Log_Warning("VTerm", "Unknown control sequence '\\x1B[?%c'", c);
1330 VT_int_ParseEscape_StandardLarge(Term, c, argc, args);
1336 Log_Notice("VTerm", "TODO: Handle short escape codes");
1340 //Log_Debug("VTerm", "j = %i, Buffer = '%s'", j, Buffer);
1345 * \fn void VT_int_PutString(tVTerm *Term, Uint8 *Buffer, Uint Count)
1346 * \brief Print a string to the Virtual Terminal
1348 void VT_int_PutString(tVTerm *Term, Uint8 *Buffer, Uint Count)
1354 for( i = 0; i < Count; i++ )
1356 // Handle escape sequences
1357 if( Buffer[i] == 0x1B )
1360 i += VT_int_ParseEscape(Term, (char*)&Buffer[i]) - 1;
1364 // Fast check for non UTF-8
1365 if( Buffer[i] < 128 ) // Plain ASCII
1366 VT_int_PutChar(Term, Buffer[i]);
1368 i += ReadUTF8(&Buffer[i], &val) - 1;
1369 VT_int_PutChar(Term, val);
1373 VT_int_UpdateScreen( Term, 0 );
1377 * \fn void VT_int_PutChar(tVTerm *Term, Uint32 Ch)
1378 * \brief Write a single character to a VTerm
1380 void VT_int_PutChar(tVTerm *Term, Uint32 Ch)
1386 if(Term->Flags & VT_FLAG_ALTBUF) {
1387 buffer = Term->AltBuf;
1388 write_pos = Term->AltWritePos;
1391 buffer = Term->Text;
1392 write_pos = Term->WritePos;
1397 case '\0': return; // Ignore NULL byte
1399 VT_int_UpdateScreen( Term, 0 ); // Update the line before newlining
1400 write_pos += Term->TextWidth;
1402 write_pos -= write_pos % Term->TextWidth;
1405 case '\t': { int tmp = write_pos / Term->TextWidth;
1406 write_pos %= Term->TextWidth;
1408 buffer[ write_pos ].Ch = '\0';
1409 buffer[ write_pos ].Colour = Term->CurColour;
1411 } while(write_pos & 7);
1412 write_pos += tmp * Term->TextWidth;
1416 // Backspace is invalid at Offset 0
1417 if(write_pos == 0) break;
1421 if(buffer[ write_pos ].Ch != '\0') {
1422 buffer[ write_pos ].Ch = 0;
1423 buffer[ write_pos ].Colour = Term->CurColour;
1427 i = 7; // Limit it to 8
1429 buffer[ write_pos ].Ch = 0;
1430 buffer[ write_pos ].Colour = Term->CurColour;
1432 } while(write_pos && i-- && buffer[ write_pos ].Ch == '\0');
1433 if(buffer[ write_pos ].Ch != '\0')
1438 buffer[ write_pos ].Ch = Ch;
1439 buffer[ write_pos ].Colour = Term->CurColour;
1440 // Update the line before wrapping
1441 if( (write_pos + 1) % Term->TextWidth == 0 )
1442 VT_int_UpdateScreen( Term, 0 );
1447 if(Term->Flags & VT_FLAG_ALTBUF)
1449 Term->AltBuf = buffer;
1450 Term->AltWritePos = write_pos;
1452 if(Term->AltWritePos >= Term->TextWidth*Term->TextHeight)
1454 Term->AltWritePos -= Term->TextWidth;
1455 VT_int_ScrollText(Term, 1);
1461 Term->Text = buffer;
1462 Term->WritePos = write_pos;
1464 // - Check if we need to scroll the entire scrollback buffer
1465 if(Term->WritePos >= Term->TextWidth*Term->TextHeight*(giVT_Scrollback+1))
1469 // Update previous line
1470 Term->WritePos -= Term->TextWidth;
1471 VT_int_UpdateScreen( Term, 0 );
1473 // Update view position
1474 base = Term->TextWidth*Term->TextHeight*(giVT_Scrollback);
1475 if(Term->ViewPos < base)
1476 Term->ViewPos += Term->Width;
1477 if(Term->ViewPos > base)
1478 Term->ViewPos = base;
1480 VT_int_ScrollText(Term, 1);
1482 // Ok, so we only need to scroll the screen
1483 else if(Term->WritePos >= Term->ViewPos + Term->TextWidth*Term->TextHeight)
1485 // Update the last line
1486 Term->WritePos -= Term->TextWidth;
1487 VT_int_UpdateScreen( Term, 0 );
1488 Term->WritePos += Term->TextWidth;
1490 VT_int_ScrollText(Term, 1);
1492 Term->ViewPos += Term->TextWidth;
1499 void VT_int_ScrollText(tVTerm *Term, int Count)
1502 int height, init_write_pos;
1504 int scroll_top, scroll_height;
1506 // Get buffer pointer and attributes
1507 if( Term->Flags & VT_FLAG_ALTBUF )
1510 height = Term->TextHeight;
1511 init_write_pos = Term->AltWritePos;
1512 scroll_top = Term->ScrollTop;
1513 scroll_height = Term->ScrollHeight;
1518 height = Term->TextHeight*(giVT_Scrollback+1);
1519 init_write_pos = Term->WritePos;
1521 scroll_height = height;
1524 // Scroll text downwards
1530 if(Count > scroll_height) Count = scroll_height;
1531 base = Term->TextWidth*(scroll_top + scroll_height - Count);
1532 len = Term->TextWidth*(scroll_height - Count);
1534 // Scroll terminal cache
1536 &buf[Term->TextWidth*scroll_top],
1537 &buf[Term->TextWidth*(scroll_top+Count)],
1538 len*sizeof(tVT_Char)
1541 for( i = 0; i < Term->TextWidth*Count; i ++ )
1543 buf[ base + i ].Ch = 0;
1544 buf[ base + i ].Colour = Term->CurColour;
1548 VT_int_ScrollFramebuffer( Term, Count );
1549 if( Term->Flags & VT_FLAG_ALTBUF )
1550 Term->AltWritePos = base;
1552 Term->WritePos = Term->ViewPos + Term->TextWidth*(Term->TextHeight - Count);
1553 for( i = 0; i < Count; i ++ )
1555 VT_int_UpdateScreen( Term, 0 );
1556 if( Term->Flags & VT_FLAG_ALTBUF )
1557 Term->AltWritePos += Term->TextWidth;
1559 Term->WritePos += Term->TextWidth;
1565 if(Count > scroll_height) Count = scroll_height;
1567 len = Term->TextWidth*(scroll_height - Count);
1569 // Scroll terminal cache
1571 &buf[Term->TextWidth*(scroll_top+Count)],
1572 &buf[Term->TextWidth*scroll_top],
1573 len*sizeof(tVT_Char)
1575 // Clear preceding rows
1576 for( i = 0; i < Term->TextWidth*Count; i ++ )
1579 buf[ i ].Colour = Term->CurColour;
1582 VT_int_ScrollFramebuffer( Term, -Count );
1583 if( Term->Flags & VT_FLAG_ALTBUF )
1584 Term->AltWritePos = Term->TextWidth*scroll_top;
1586 Term->WritePos = Term->ViewPos;
1587 for( i = 0; i < Count; i ++ )
1589 VT_int_UpdateScreen( Term, 0 );
1590 if( Term->Flags & VT_FLAG_ALTBUF )
1591 Term->AltWritePos += Term->TextWidth;
1593 Term->WritePos += Term->TextWidth;
1597 if( Term->Flags & VT_FLAG_ALTBUF )
1598 Term->AltWritePos = init_write_pos;
1600 Term->WritePos = init_write_pos;
1604 * \fn void VT_int_ScrollFramebuffer( tVTerm *Term, int Count )
1605 * \note Scrolls the framebuffer down by \a Count text lines
1607 void VT_int_ScrollFramebuffer( tVTerm *Term, int Count )
1617 // Only update if this is the current terminal
1618 if( Term != gpVT_CurTerm ) return;
1620 if( Count > Term->ScrollHeight ) Count = Term->ScrollHeight;
1621 if( Count < -Term->ScrollHeight ) Count = -Term->ScrollHeight;
1623 // Switch to 2D Command Stream
1624 tmp = VIDEO_BUFFMT_2DSTREAM;
1625 VFS_IOCtl(giVT_OutputDevHandle, VIDEO_IOCTL_SETBUFFORMAT, &tmp);
1627 // BLIT to 0,0 from 0,giVT_CharHeight
1628 buf.Op = VIDEO_2DOP_BLIT;
1629 buf.SrcX = 0; buf.DstX = 0;
1630 // TODO: Don't assume character dimensions
1631 buf.W = Term->TextWidth * giVT_CharWidth;
1634 buf.SrcY = (Term->ScrollTop+Count) * giVT_CharHeight;
1635 buf.DstY = Term->ScrollTop * giVT_CharHeight;
1637 else // Scroll up, move text down
1640 buf.SrcY = Term->ScrollTop * giVT_CharHeight;
1641 buf.DstY = (Term->ScrollTop+Count) * giVT_CharHeight;
1643 buf.H = (Term->ScrollHeight-Count) * giVT_CharHeight;
1644 VFS_WriteAt(giVT_OutputDevHandle, 0, sizeof(buf), &buf);
1646 // Restore old mode (this function is only called during text mode)
1647 tmp = VIDEO_BUFFMT_TEXT;
1648 VFS_IOCtl(giVT_OutputDevHandle, VIDEO_IOCTL_SETBUFFORMAT, &tmp);
1651 void VT_int_UpdateCursor( tVTerm *Term, int bShow )
1653 tVideo_IOCtl_Pos csr_pos;
1655 if( Term != gpVT_CurTerm ) return ;
1662 else if( Term->Mode == TERM_MODE_TEXT )
1666 // if( !(Term->Flags & VT_FLAG_SHOWCSR)
1667 // && ( (Term->Flags & VT_FLAG_HIDECSR) || !Term->Node.ReadThreads)
1669 if( !Term->Text || Term->Flags & VT_FLAG_HIDECSR )
1676 if(Term->Flags & VT_FLAG_ALTBUF)
1677 offset = Term->AltWritePos;
1679 offset = Term->WritePos - Term->ViewPos;
1681 csr_pos.x = offset % Term->TextWidth;
1682 csr_pos.y = offset / Term->TextWidth;
1683 if( 0 > csr_pos.y || csr_pos.y >= Term->TextHeight )
1684 csr_pos.y = -1, csr_pos.x = -1;
1689 csr_pos.x = Term->VideoCursorX;
1690 csr_pos.y = Term->VideoCursorY;
1692 VFS_IOCtl(giVT_OutputDevHandle, VIDEO_IOCTL_SETCURSOR, &csr_pos);
1696 * \fn void VT_int_UpdateScreen( tVTerm *Term, int UpdateAll )
1697 * \brief Updates the video framebuffer
1699 void VT_int_UpdateScreen( tVTerm *Term, int UpdateAll )
1702 int view_pos, write_pos;
1703 // Only update if this is the current terminal
1704 if( Term != gpVT_CurTerm ) return;
1706 switch( Term->Mode )
1708 case TERM_MODE_TEXT:
1709 view_pos = (Term->Flags & VT_FLAG_ALTBUF) ? 0 : Term->ViewPos;
1710 write_pos = (Term->Flags & VT_FLAG_ALTBUF) ? Term->AltWritePos : Term->WritePos;
1711 buffer = (Term->Flags & VT_FLAG_ALTBUF) ? Term->AltBuf : Term->Text;
1712 // Re copy the entire screen?
1715 giVT_OutputDevHandle,
1717 Term->TextWidth*Term->TextHeight*sizeof(tVT_Char),
1721 // Only copy the current line
1723 int ofs = write_pos - write_pos % Term->TextWidth;
1725 giVT_OutputDevHandle,
1726 (ofs - view_pos)*sizeof(tVT_Char),
1727 Term->TextWidth*sizeof(tVT_Char),
1736 VT_int_UpdateCursor(Term, 1);
1740 * \brief Update the screen mode
1741 * \param Term Terminal to update
1742 * \param NewMode New mode to set
1743 * \param NewWidth New framebuffer width
1744 * \param NewHeight New framebuffer height
1746 void VT_int_ChangeMode(tVTerm *Term, int NewMode, int NewWidth, int NewHeight)
1748 int oldW = Term->Width;
1749 int oldTW = Term->TextWidth;
1750 int oldH = Term->Height;
1751 int oldTH = Term->TextHeight;
1752 tVT_Char *oldTBuf = Term->Text;
1753 Uint32 *oldFB = Term->Buffer;
1756 // TODO: Increase RealWidth/RealHeight when this happens
1757 if(NewWidth > giVT_RealWidth) NewWidth = giVT_RealWidth;
1758 if(NewHeight > giVT_RealHeight) NewHeight = giVT_RealHeight;
1760 Term->Mode = NewMode;
1762 // Fast exit if no resolution change
1763 if(NewWidth == Term->Width && NewHeight == Term->Height)
1766 // Calculate new dimensions
1767 Term->Width = NewWidth;
1768 Term->Height = NewHeight;
1769 Term->TextWidth = NewWidth / giVT_CharWidth;
1770 Term->TextHeight = NewHeight / giVT_CharHeight;
1771 Term->ScrollHeight = Term->TextHeight - (oldTH - Term->ScrollHeight) - Term->ScrollTop;
1773 // Allocate new buffers
1775 Term->Text = calloc(
1776 Term->TextWidth * Term->TextHeight * (giVT_Scrollback+1),
1781 w = (oldTW > Term->TextWidth) ? Term->TextWidth : oldTW;
1782 h = (oldTH > Term->TextHeight) ? Term->TextHeight : oldTH;
1783 h *= giVT_Scrollback + 1;
1784 for( i = 0; i < h; i ++ )
1787 &Term->Text[i*Term->TextWidth],
1796 Term->AltBuf = realloc(
1798 Term->TextWidth * Term->TextHeight * sizeof(tVT_Char)
1803 Term->Buffer = calloc( Term->Width * Term->Height, sizeof(Uint32) );
1805 w = (oldW > Term->Width) ? Term->Width : oldW;
1806 h = (oldH > Term->Height) ? Term->Height : oldH;
1807 for( i = 0; i < h; i ++ )
1810 &Term->Buffer[i*Term->Width],
1821 case TERM_MODE_TEXT:
1822 Log_Log("VTerm", "Set VT %p to text mode (%ix%i)",
1823 Term, Term->TextWidth, Term->TextHeight);
1826 Log_Log("VTerm", "Set VT %p to framebuffer mode (%ix%i)",
1827 Term, Term->Width, Term->Height);
1829 //case TERM_MODE_2DACCEL:
1830 //case TERM_MODE_3DACCEL:
1836 void VT_int_ToggleAltBuffer(tVTerm *Term, int Enabled)
1839 Term->Flags |= VT_FLAG_ALTBUF;
1841 Term->Flags &= ~VT_FLAG_ALTBUF;
1842 VT_int_UpdateScreen(Term, 1);
1848 #define MONOSPACE_FONT 10816
1850 #if MONOSPACE_FONT == 10808 // 8x8
1851 # include "vterm_font_8x8.h"
1852 #elif MONOSPACE_FONT == 10816 // 8x16
1853 # include "vterm_font_8x16.h"
1856 // === PROTOTYPES ===
1857 Uint8 *VT_Font_GetChar(Uint32 Codepoint);
1860 int giVT_CharWidth = FONT_WIDTH;
1861 int giVT_CharHeight = FONT_HEIGHT;
1865 * \brief Render a font character
1867 void VT_Font_Render(Uint32 Codepoint, void *Buffer, int Depth, int Pitch, Uint32 BGC, Uint32 FGC)
1875 Uint8 *buf = Buffer;
1877 font = VT_Font_GetChar(Codepoint);
1879 for(y = 0; y < FONT_HEIGHT; y ++)
1881 for(x = 0; x < FONT_WIDTH; x ++)
1883 if(*font & (1 << (FONT_WIDTH-x-1)))
1888 buf = (void*)( (tVAddr)buf + Pitch );
1893 else if( Depth <= 16 )
1895 Uint16 *buf = Buffer;
1897 font = VT_Font_GetChar(Codepoint);
1899 for(y = 0; y < FONT_HEIGHT; y ++)
1901 for(x = 0; x < FONT_WIDTH; x ++)
1903 if(*font & (1 << (FONT_WIDTH-x-1)))
1908 buf = (void*)( (tVAddr)buf + Pitch );
1913 // - Special handling to not overwrite the next pixel
1914 //TODO: Endian issues here
1915 else if( Depth == 24 )
1917 Uint8 *buf = Buffer;
1918 Uint8 bg_r = (BGC >> 16) & 0xFF;
1919 Uint8 bg_g = (BGC >> 8) & 0xFF;
1920 Uint8 bg_b = (BGC >> 0) & 0xFF;
1921 Uint8 fg_r = (FGC >> 16) & 0xFF;
1922 Uint8 fg_g = (FGC >> 8) & 0xFF;
1923 Uint8 fg_b = (FGC >> 0) & 0xFF;
1925 font = VT_Font_GetChar(Codepoint);
1927 for(y = 0; y < FONT_HEIGHT; y ++)
1929 for(x = 0; x < FONT_WIDTH; x ++)
1933 if(*font & (1 << (FONT_WIDTH-x-1))) {
1934 r = fg_r; g = fg_g; b = fg_b;
1937 r = bg_r; g = bg_g; b = bg_b;
1943 buf = (void*)( (tVAddr)buf + Pitch );
1947 // 32-bpp colour (nice and easy)
1948 else if( Depth == 32 )
1950 Uint32 *buf = Buffer;
1952 font = VT_Font_GetChar(Codepoint);
1954 for(y = 0; y < FONT_HEIGHT; y ++)
1956 for(x = 0; x < FONT_WIDTH; x ++)
1958 if(*font & (1 << (FONT_WIDTH-x-1)))
1963 buf = (Uint32*)( (tVAddr)buf + Pitch );
1970 * \fn Uint32 VT_Colour12to24(Uint16 Col12)
1971 * \brief Converts a 12-bit colour into 24 bits
1973 Uint32 VT_Colour12to24(Uint16 Col12)
1978 ret = (tmp << 0) | (tmp << 4);
1979 tmp = (Col12 & 0xF0) >> 4;
1980 ret |= (tmp << 8) | (tmp << 12);
1981 tmp = (Col12 & 0xF00) >> 8;
1982 ret |= (tmp << 16) | (tmp << 20);
1986 * \brief Converts a 12-bit colour into 15 bits
1988 Uint16 VT_Colour12to15(Uint16 Col12)
1993 ret = (tmp << 1) | (tmp & 1);
1994 tmp = (Col12 & 0xF0) >> 4;
1995 ret |= ( (tmp << 1) | (tmp & 1) ) << 5;
1996 tmp = (Col12 & 0xF00) >> 8;
1997 ret |= ( (tmp << 1) | (tmp & 1) ) << 10;
2002 * \brief Converts a 12-bit colour into any other depth
2003 * \param Col12 12-bit source colour
2004 * \param Depth Desired bit deptj
2005 * \note Green then blue get the extra avaliable bits (16:5-6-5, 14:4-5-5)
2007 Uint32 VT_Colour12toN(Uint16 Col12, int Depth)
2011 int rSize, gSize, bSize;
2014 if( Depth == 24 ) return VT_Colour12to24(Col12);
2015 if( Depth == 15 ) return VT_Colour12to15(Col12);
2016 // - 32 is a special case, it's usually 24-bit colour with an unused byte
2017 if( Depth == 32 ) return VT_Colour12to24(Col12);
2020 if( Depth < 8 ) return 0;
2021 if( Depth > 32 ) return 0;
2024 g = (Col12 & 0xF0) >> 4;
2025 b = (Col12 & 0xF00) >> 8;
2027 rSize = gSize = bSize = Depth / 3;
2028 if( rSize + gSize + bSize < Depth ) // Depth % 3 == 1
2030 if( rSize + gSize + bSize < Depth ) // Depth % 3 == 2
2034 r <<= rSize - 4; g <<= gSize - 4; b <<= bSize - 4;
2035 // Fill with the lowest bit
2036 if( Col12 & 0x001 ) r |= (1 << (rSize - 4)) - 1;
2037 if( Col12 & 0x010 ) r |= (1 << (gSize - 4)) - 1;
2038 if( Col12 & 0x100 ) r |= (1 << (bSize - 4)) - 1;
2043 ret |= b << (rSize + gSize);
2049 * \fn Uint8 *VT_Font_GetChar(Uint32 Codepoint)
2050 * \brief Gets an index into the font array given a Unicode Codepoint
2051 * \note See http://en.wikipedia.org/wiki/CP437
2053 Uint8 *VT_Font_GetChar(Uint32 Codepoint)
2057 return &VTermFont[Codepoint*FONT_HEIGHT];
2060 case 0xC7: index = 128; break; // Ç
2061 case 0xFC: index = 129; break; // ü
2062 case 0xE9: index = 130; break; // é
2063 case 0xE2: index = 131; break; // â
2064 case 0xE4: index = 132; break; // ä
2065 case 0xE0: index = 133; break; // à
2066 case 0xE5: index = 134; break; // å
2067 case 0xE7: index = 135; break; // ç
2068 case 0xEA: index = 136; break; // ê
2069 case 0xEB: index = 137; break; // ë
2070 case 0xE8: index = 138; break; // è
2071 case 0xEF: index = 139; break; // ï
2072 case 0xEE: index = 140; break; // î
2073 case 0xEC: index = 141; break; // ì
2074 case 0xC4: index = 142; break; // Ä
2075 case 0xC5: index = 143; break; // Å
2078 return &VTermFont[index*FONT_HEIGHT];
2081 EXPORTAS(&giVT_CharWidth, giVT_CharWidth);
2082 EXPORTAS(&giVT_CharHeight, giVT_CharHeight);
2083 EXPORT(VT_Font_Render);
2084 EXPORT(VT_Colour12to24);