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, const 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, const 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, const 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 tVFS_NodeType gVT_RootNodeType = {
126 .TypeName = "VTerm Root",
127 .ReadDir = VT_ReadDir,
128 .FindDir = VT_FindDir,
129 .IOCtl = VT_Root_IOCtl
131 tVFS_NodeType gVT_TermNodeType = {
135 .IOCtl = VT_Terminal_IOCtl
137 tDevFS_Driver gVT_DrvInfo = {
140 .Flags = VFS_FFLAG_DIRECTORY,
144 .Type = &gVT_RootNodeType
148 tVTerm gVT_Terminals[NUM_VTS];
149 int giVT_CurrentTerminal = 0;
150 tVTerm *gpVT_CurTerm = &gVT_Terminals[0];
151 // --- Video State ---
152 short giVT_RealWidth = DEFAULT_WIDTH; //!< Screen Width
153 short giVT_RealHeight = DEFAULT_HEIGHT; //!< Screen Height
154 int giVT_Scrollback = DEFAULT_SCROLLBACK;
155 // --- Driver Handles ---
156 char *gsVT_OutputDevice = NULL;
157 char *gsVT_InputDevice = NULL;
158 int giVT_OutputDevHandle = -2;
159 int giVT_InputDevHandle = -2;
160 // --- Key States --- (Used for VT Switching/Magic Combos)
161 int gbVT_CtrlDown = 0;
162 int gbVT_AltDown = 0;
163 int gbVT_SysrqDown = 0;
167 * \fn int VT_Install(char **Arguments)
168 * \brief Installs the Virtual Terminal Driver
170 int VT_Install(char **Arguments)
179 for(args = Arguments; (arg = *args); args++ )
181 char data[strlen(arg)+1];
185 val = strchr(arg, '=');
188 data[ val - arg ] = '\0';
191 Log_Debug("VTerm", "Argument '%s'", arg);
193 if( strcmp(opt, "Video") == 0 ) {
194 if( !gsVT_OutputDevice )
195 gsVT_OutputDevice = strdup(val);
197 else if( strcmp(opt, "Input") == 0 ) {
198 if( !gsVT_InputDevice )
199 gsVT_InputDevice = strdup(val);
201 else if( strcmp(opt, "Width") == 0 ) {
202 giVT_RealWidth = atoi( val );
204 else if( strcmp(opt, "Height") == 0 ) {
205 giVT_RealHeight = atoi( val );
207 else if( strcmp(opt, "Scrollback") == 0 ) {
208 giVT_Scrollback = atoi( val );
214 if(!gsVT_OutputDevice) gsVT_OutputDevice = (char*)DEFAULT_OUTPUT;
215 else if( Module_EnsureLoaded( gsVT_OutputDevice ) ) gsVT_OutputDevice = (char*)DEFAULT_OUTPUT;
216 if( Module_EnsureLoaded( gsVT_OutputDevice ) ) gsVT_OutputDevice = (char*)FALLBACK_OUTPUT;
217 if( Module_EnsureLoaded( gsVT_OutputDevice ) ) {
218 Log_Error("VTerm", "Fallback video '%s' is not avaliable, giving up", FALLBACK_OUTPUT);
219 return MODULE_ERR_MISC;
222 if(!gsVT_InputDevice) gsVT_InputDevice = (char*)DEFAULT_INPUT;
223 else if( Module_EnsureLoaded( gsVT_InputDevice ) ) gsVT_InputDevice = (char*)DEFAULT_INPUT;
225 // Create device paths
228 tmp = malloc( 9 + strlen(gsVT_OutputDevice) + 1 );
229 strcpy(tmp, "/Devices/");
230 strcpy(&tmp[9], gsVT_OutputDevice);
231 gsVT_OutputDevice = tmp;
233 tmp = malloc( 9 + strlen(gsVT_InputDevice) + 1 );
234 strcpy(tmp, "/Devices/");
235 strcpy(&tmp[9], gsVT_InputDevice);
236 gsVT_InputDevice = tmp;
239 Log_Log("VTerm", "Using '%s' as output", gsVT_OutputDevice);
240 Log_Log("VTerm", "Using '%s' as input", gsVT_InputDevice);
246 for( i = 0; i < NUM_VTS; i++ )
248 gVT_Terminals[i].Mode = TERM_MODE_TEXT;
249 gVT_Terminals[i].Flags = 0;
250 // gVT_Terminals[i].Flags = VT_FLAG_HIDECSR; //HACK - Stop all those memcpy calls
251 gVT_Terminals[i].CurColour = DEFAULT_COLOUR;
252 gVT_Terminals[i].WritePos = 0;
253 gVT_Terminals[i].AltWritePos = 0;
254 gVT_Terminals[i].ViewPos = 0;
255 gVT_Terminals[i].ReadingThread = -1;
256 gVT_Terminals[i].ScrollHeight = 0;
259 VT_int_ChangeMode( &gVT_Terminals[i],
260 TERM_MODE_TEXT, giVT_RealWidth, giVT_RealHeight );
262 gVT_Terminals[i].Name[0] = '0'+i;
263 gVT_Terminals[i].Name[1] = '\0';
264 gVT_Terminals[i].Node.Inode = i;
265 gVT_Terminals[i].Node.ImplPtr = &gVT_Terminals[i];
266 gVT_Terminals[i].Node.NumACLs = 0; // Only root can open virtual terminals
268 gVT_Terminals[i].Node.Type = &gVT_TermNodeType;
269 // Semaphore_Init(&gVT_Terminals[i].InputSemaphore, 0, MAX_INPUT_CHARS8, "VTerm", gVT_Terminals[i].Name);
273 DevFS_AddDevice( &gVT_DrvInfo );
275 // Set kernel output to VT0
276 Debug_SetKTerminal("/Devices/VTerm/0");
278 return MODULE_ERR_OK;
282 * \fn void VT_InitOutput()
283 * \brief Initialise Video Output
287 giVT_OutputDevHandle = VFS_Open(gsVT_OutputDevice, VFS_OPENFLAG_WRITE);
288 if(giVT_OutputDevHandle == -1) {
289 Log_Warning("VTerm", "Oh F**k, I can't open the video device '%s'", gsVT_OutputDevice);
292 VT_SetResolution( giVT_RealWidth, giVT_RealHeight );
294 VT_SetMode( VIDEO_BUFFMT_TEXT );
298 * \fn void VT_InitInput()
299 * \brief Initialises the input
303 giVT_InputDevHandle = VFS_Open(gsVT_InputDevice, VFS_OPENFLAG_READ);
304 if(giVT_InputDevHandle == -1) {
305 Log_Warning("VTerm", "Can't open the input device '%s'", gsVT_InputDevice);
308 VFS_IOCtl(giVT_InputDevHandle, KB_IOCTL_SETCALLBACK, VT_KBCallBack);
312 * \brief Set the video resolution
313 * \param Width New screen width
314 * \param Height New screen height
316 void VT_SetResolution(int Width, int Height)
318 tVideo_IOCtl_Mode mode = {0};
322 // Create the video mode
324 mode.height = Height;
329 VFS_IOCtl( giVT_OutputDevHandle, VIDEO_IOCTL_FINDMODE, &mode );
331 if( Width != mode.width || Height != mode.height )
334 "Selected resolution (%ix%i is not supported) by the device, using (%ix%i)",
335 giVT_RealWidth, giVT_RealHeight,
336 mode.width, mode.height
338 giVT_RealWidth = mode.width;
339 giVT_RealHeight = mode.height;
341 VFS_IOCtl( giVT_OutputDevHandle, VIDEO_IOCTL_GETSETMODE, &tmp );
343 // Resize text terminals if needed
344 if( gVT_Terminals[0].Text && (giVT_RealWidth != mode.width || giVT_RealHeight != mode.height) )
346 int newBufSize = (giVT_RealWidth/giVT_CharWidth)
347 *(giVT_RealHeight/giVT_CharHeight)
348 *(giVT_Scrollback+1);
350 // Resize the text terminals
351 Log_Debug("VTerm", "Resizing terminals to %ix%i",
352 giVT_RealWidth/giVT_CharWidth, giVT_RealHeight/giVT_CharHeight);
353 for( i = 0; i < NUM_VTS; i ++ )
355 if( gVT_Terminals[i].Mode != TERM_MODE_TEXT ) continue;
357 gVT_Terminals[i].TextWidth = giVT_RealWidth/giVT_CharWidth;
358 gVT_Terminals[i].TextHeight = giVT_RealHeight/giVT_CharHeight;
359 gVT_Terminals[i].ScrollHeight = gVT_Terminals[i].TextHeight;
361 gVT_Terminals[i].Text = realloc(
362 gVT_Terminals[i].Text,
363 newBufSize*sizeof(tVT_Char)
370 * \brief Set video output buffer mode
372 void VT_SetMode(int Mode)
374 VFS_IOCtl( giVT_OutputDevHandle, VIDEO_IOCTL_SETBUFFORMAT, &Mode );
378 * \fn char *VT_ReadDir(tVFS_Node *Node, int Pos)
379 * \brief Read from the VTerm Directory
381 char *VT_ReadDir(tVFS_Node *Node, int Pos)
383 if(Pos < 0) return NULL;
384 if(Pos >= NUM_VTS) return NULL;
385 return strdup( gVT_Terminals[Pos].Name );
389 * \fn tVFS_Node *VT_FindDir(tVFS_Node *Node, const char *Name)
390 * \brief Find an item in the VTerm directory
391 * \param Node Root node
392 * \param Name Name (number) of the terminal
394 tVFS_Node *VT_FindDir(tVFS_Node *Node, const char *Name)
398 ENTER("pNode sName", Node, Name);
400 // Open the input and output files if needed
401 if(giVT_OutputDevHandle == -2) VT_InitOutput();
402 if(giVT_InputDevHandle == -2) VT_InitInput();
405 if(Name[0] < '0' || Name[0] > '9' || Name[1] != '\0') {
416 LEAVE('p', &gVT_Terminals[num].Node);
417 return &gVT_Terminals[num].Node;
421 * \fn int VT_Root_IOCtl(tVFS_Node *Node, int Id, void *Data)
422 * \brief Control the VTerm Driver
424 int VT_Root_IOCtl(tVFS_Node *Node, int Id, void *Data)
429 case DRV_IOCTL_TYPE: return DRV_TYPE_MISC;
430 case DRV_IOCTL_IDENT: memcpy(Data, "VT\0\0", 4); return 0;
431 case DRV_IOCTL_VERSION: return VERSION;
432 case DRV_IOCTL_LOOKUP: return 0;
434 case 4: // Get Video Driver
435 if(Data) strcpy(Data, gsVT_OutputDevice);
436 return strlen(gsVT_OutputDevice);
438 case 5: // Set Video Driver
439 if(!Data) return -EINVAL;
440 if(Threads_GetUID() != 0) return -EACCES;
444 // TODO: Check if the string used is a heap string
446 free(gsVT_OutputDevice);
448 gsVT_OutputDevice = malloc(len+1);
449 strcpy(gsVT_OutputDevice, Data);
451 VFS_Close(giVT_OutputDevHandle);
452 giVT_OutputDevHandle = -1;
461 * \brief Read from a virtual terminal
463 Uint64 VT_Read(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
467 tVTerm *term = &gVT_Terminals[ Node->Inode ];
468 Uint32 *codepoint_buf = Buffer;
469 Uint32 *codepoint_in;
471 Mutex_Acquire( &term->ReadingLock );
473 // Check current mode
478 VT_int_UpdateCursor(term, 1);
480 VFS_SelectNode(Node, VFS_SELECT_READ, NULL, "VT_Read (UTF-8)");
482 avail = term->InputWrite - term->InputRead;
484 avail += MAX_INPUT_CHARS8;
485 if(avail > Length - pos)
486 avail = Length - pos;
490 ((char*)Buffer)[pos] = term->InputBuffer[term->InputRead];
493 while(term->InputRead >= MAX_INPUT_CHARS8)
494 term->InputRead -= MAX_INPUT_CHARS8;
501 VFS_SelectNode(Node, VFS_SELECT_READ, NULL, "VT_Read (UCS-4)");
503 avail = term->InputWrite - term->InputRead;
505 avail += MAX_INPUT_CHARS32;
507 if(avail > Length - pos)
508 avail = Length - pos;
510 codepoint_in = (void*)term->InputBuffer;
511 codepoint_buf = Buffer;
515 codepoint_buf[pos] = codepoint_in[term->InputRead];
518 while(term->InputRead >= MAX_INPUT_CHARS32)
519 term->InputRead -= MAX_INPUT_CHARS32;
525 // Mark none avaliable if buffer empty
526 if( term->InputRead == term->InputWrite )
527 VFS_MarkAvaliable(&term->Node, 0);
529 term->ReadingThread = -1;
531 // VT_int_UpdateCursor(term, term->Mode == TERM_MODE_TEXT);
533 Mutex_Release( &term->ReadingLock );
539 * \fn Uint64 VT_Write(tVFS_Node *Node, Uint64 Offset, Uint64 Length, const void *Buffer)
540 * \brief Write to a virtual terminal
542 Uint64 VT_Write(tVFS_Node *Node, Uint64 Offset, Uint64 Length, const void *Buffer)
544 tVTerm *term = &gVT_Terminals[ Node->Inode ];
552 VT_int_PutString(term, Buffer, Length);
558 size = term->Width*term->Height*4;
559 if( Offset > size ) {
560 Log_Notice("VTerm", "VT_Write: Offset (0x%llx) > FBSize (0x%x)",
564 if( Offset + Length > size ) {
565 Log_Notice("VTerm", "VT_Write: Offset+Length (0x%llx) > FBSize (0x%x)",
566 Offset+Length, size);
567 Length = size - Offset;
570 // Update screen if needed
571 if( Node->Inode == giVT_CurrentTerminal )
573 if( giVT_RealHeight > term->Height )
574 Offset += (giVT_RealHeight - term->Height) / 2 * term->Width * 4;
575 // Handle undersized virtual terminals
576 if( giVT_RealWidth > term->Width )
578 // No? :( Well, just center it
581 // TODO: Fix to handle the final line correctly?
582 x = Offset/4; y = x / term->Width; x %= term->Width;
583 w = Length/4+x; h = w / term->Width; w %= term->Width;
586 x += (giVT_RealWidth - term->Width) / 2;
587 dst_ofs = (x + y * giVT_RealWidth) * 4;
590 VFS_WriteAt( giVT_OutputDevHandle,
595 Buffer = (void*)( (Uint)Buffer + term->Width*4 );
596 dst_ofs += giVT_RealWidth * 4;
602 return VFS_WriteAt( giVT_OutputDevHandle, Offset, Length, Buffer );
608 term->Buffer = malloc( term->Width * term->Height * 4 );
609 // Copy to the local cache
610 memcpy( (char*)term->Buffer + (Uint)Offset, Buffer, Length );
613 // Just pass on (for now)
614 // TODO: Handle locally too to ensure no information is lost on
615 // VT Switch (and to isolate terminals from each other)
616 case TERM_MODE_2DACCEL:
617 //case TERM_MODE_3DACCEL:
618 if( Node->Inode == giVT_CurrentTerminal )
620 VFS_Write( giVT_OutputDevHandle, Length, Buffer );
629 * \fn int VT_Terminal_IOCtl(tVFS_Node *Node, int Id, void *Data)
630 * \brief Call an IO Control on a virtual terminal
632 int VT_Terminal_IOCtl(tVFS_Node *Node, int Id, void *Data)
636 tVTerm *term = Node->ImplPtr;
637 ENTER("pNode iId pData", Node, Id, Data);
639 if(Id >= DRV_IOCTL_LOOKUP) {
640 // Only root can fiddle with graphics modes
641 // TODO: Remove this and replace with user ownership
642 if( Threads_GetUID() != 0 ) return -1;
649 LEAVE('i', DRV_TYPE_TERMINAL);
650 return DRV_TYPE_TERMINAL;
651 case DRV_IOCTL_IDENT:
652 memcpy(Data, "VT\0\0", 4);
655 case DRV_IOCTL_VERSION:
658 case DRV_IOCTL_LOOKUP:
662 // Get/Set the mode (and apply any changes)
663 case TERM_IOCTL_MODETYPE:
666 if( CheckMem(Data, sizeof(int)) == 0 ) {
670 Log_Log("VTerm", "VTerm %i mode set to %i", (int)Node->Inode, *iData);
672 // Update mode if needed
673 if( term->Mode != *iData || term->NewWidth || term->NewHeight)
675 // Adjust for text mode
676 if( *iData == TERM_MODE_TEXT ) {
677 term->NewHeight *= giVT_CharHeight;
678 term->NewWidth *= giVT_CharWidth;
680 // Fill unchanged dimensions
681 if(term->NewHeight == 0) term->NewHeight = term->Height;
682 if(term->NewWidth == 0) term->NewWidth = term->Width;
684 VT_int_ChangeMode(term, *iData, term->NewWidth, term->NewHeight);
685 // Clear unapplied dimensions
690 // Update the screen dimensions
691 if(Node->Inode == giVT_CurrentTerminal)
692 VT_SetTerminal( giVT_CurrentTerminal );
694 LEAVE('i', term->Mode);
697 // Get/set the terminal width
698 case TERM_IOCTL_WIDTH:
700 if( CheckMem(Data, sizeof(int)) == 0 ) {
704 term->NewWidth = *iData;
707 ret = term->NewWidth;
708 else if( term->Mode == TERM_MODE_TEXT )
709 ret = term->TextWidth;
715 // Get/set the terminal height
716 case TERM_IOCTL_HEIGHT:
718 if( CheckMem(Data, sizeof(int)) == 0 ) {
722 term->NewHeight = *iData;
724 if( term->NewHeight )
725 ret = term->NewHeight;
726 else if( term->Mode == TERM_MODE_TEXT )
727 ret = term->TextHeight;
733 case TERM_IOCTL_FORCESHOW:
734 Log_Log("VTerm", "Thread %i forced VTerm %i to be shown",
735 Threads_GetTID(), (int)Node->Inode);
736 VT_SetTerminal( Node->Inode );
740 case TERM_IOCTL_GETSETCURSOR:
743 tVideo_IOCtl_Pos *pos = Data;
744 if( !CheckMem(Data, sizeof(*pos)) ) {
750 if( term->Mode == TERM_MODE_TEXT )
752 if(term->Flags & VT_FLAG_ALTBUF)
753 term->AltWritePos = pos->x + pos->y * term->TextWidth;
755 term->WritePos = pos->x + pos->y * term->TextWidth + term->ViewPos;
756 VT_int_UpdateCursor(term, 0);
760 term->VideoCursorX = pos->x;
761 term->VideoCursorY = pos->y;
762 VT_int_UpdateCursor(term, 1);
765 ret = (term->Flags & VT_FLAG_ALTBUF) ? term->AltWritePos : term->WritePos-term->ViewPos;
769 case TERM_IOCTL_SETCURSORBITMAP: {
770 tVideo_IOCtl_Bitmap *bmp = Data;
773 free( term->VideoCursor );
774 term->VideoCursor = NULL;
779 // Sanity check bitmap
780 if( !CheckMem(bmp, sizeof(tVideo_IOCtl_Bitmap)) ) {
781 Log_Notice("VTerm", "%p in TERM_IOCTL_SETCURSORBITMAP invalid", bmp);
785 if( !CheckMem(bmp->Data, bmp->W*bmp->H*sizeof(Uint32)) ) {
786 Log_Notice("VTerm", "%p in TERM_IOCTL_SETCURSORBITMAP invalid", bmp);
791 // Reallocate if needed
792 if(term->VideoCursor)
794 if(bmp->W * bmp->H != term->VideoCursor->W * term->VideoCursor->H) {
795 free(term->VideoCursor);
796 term->VideoCursor = NULL;
799 if(!term->VideoCursor) {
800 term->VideoCursor = malloc(sizeof(tVideo_IOCtl_Pos) + bmp->W*bmp->H*sizeof(Uint32));
801 if(!term->VideoCursor) {
802 Log_Error("VTerm", "Unable to allocate memory for cursor");
808 memcpy(term->VideoCursor, bmp, sizeof(tVideo_IOCtl_Pos) + bmp->W*bmp->H*sizeof(Uint32));
810 Log_Debug("VTerm", "Set VT%i's cursor to %p %ix%i",
811 (int)term->Node.Inode, bmp, bmp->W, bmp->H);
813 if(gpVT_CurTerm == term)
814 VFS_IOCtl(giVT_OutputDevHandle, VIDEO_IOCTL_SETCURSORBITMAP, term->VideoCursor);
824 * \fn void VT_SetTerminal(int ID)
825 * \brief Set the current terminal
827 void VT_SetTerminal(int ID)
829 // Copy the screen state
830 if( ID != giVT_CurrentTerminal && gpVT_CurTerm->Mode != TERM_MODE_TEXT )
832 if( !gpVT_CurTerm->Buffer )
833 gpVT_CurTerm->Buffer = malloc( gpVT_CurTerm->Width*gpVT_CurTerm->Height*4 );
834 if( gpVT_CurTerm->Width < giVT_RealWidth )
838 Uint32 *dest = gpVT_CurTerm->Buffer;
839 // Slower scanline copy
840 for( line = 0; line < gpVT_CurTerm->Height; line ++ )
842 VFS_ReadAt(giVT_OutputDevHandle, ofs, gpVT_CurTerm->Width*4, dest);
843 ofs += giVT_RealWidth * 4;
844 dest += gpVT_CurTerm->Width;
849 VFS_ReadAt(giVT_OutputDevHandle,
850 0, gpVT_CurTerm->Height*giVT_RealWidth*4,
856 // Update current terminal ID
857 Log_Log("VTerm", "Changed terminal from %i to %i", giVT_CurrentTerminal, ID);
858 giVT_CurrentTerminal = ID;
859 gpVT_CurTerm = &gVT_Terminals[ID];
861 if( gpVT_CurTerm->Mode == TERM_MODE_TEXT )
863 VT_SetMode( VIDEO_BUFFMT_TEXT );
867 // Update the cursor image
868 if(gpVT_CurTerm->VideoCursor)
869 VFS_IOCtl(giVT_OutputDevHandle, VIDEO_IOCTL_SETCURSORBITMAP, gpVT_CurTerm->VideoCursor);
870 VT_SetMode( VIDEO_BUFFMT_FRAMEBUFFER );
873 if(gpVT_CurTerm->Buffer)
875 // TODO: Handle non equal sized
877 giVT_OutputDevHandle,
879 gpVT_CurTerm->Width*gpVT_CurTerm->Height*sizeof(Uint32),
884 VT_int_UpdateCursor(gpVT_CurTerm, 1);
886 VT_int_UpdateScreen(gpVT_CurTerm, 1);
890 * \fn void VT_KBCallBack(Uint32 Codepoint)
891 * \brief Called on keyboard interrupt
892 * \param Codepoint Pseudo-UTF32 character
894 * Handles a key press and sends the key code to the user's buffer.
895 * If the code creates a kernel-magic sequence, it is not passed to the
896 * user and is handled in-kernel.
898 void VT_KBCallBack(Uint32 Codepoint)
900 tVTerm *term = gpVT_CurTerm;
903 switch( Codepoint & KEY_ACTION_MASK )
905 case KEY_ACTION_RELEASE:
906 switch(Codepoint & KEY_CODEPOINT_MASK)
908 case KEY_LALT: gbVT_AltDown &= ~1; break;
909 case KEY_RALT: gbVT_AltDown &= ~2; break;
910 case KEY_LCTRL: gbVT_CtrlDown &= ~1; break;
911 case KEY_RCTRL: gbVT_CtrlDown &= ~2; break;
915 case KEY_ACTION_PRESS:
916 switch(Codepoint & KEY_CODEPOINT_MASK)
918 case KEY_LALT: gbVT_AltDown |= 1; break;
919 case KEY_RALT: gbVT_AltDown |= 2; break;
920 case KEY_LCTRL: gbVT_CtrlDown |= 1; break;
921 case KEY_RCTRL: gbVT_CtrlDown |= 2; break;
924 if(!gbVT_AltDown || !gbVT_CtrlDown)
926 switch(Codepoint & KEY_CODEPOINT_MASK)
928 case KEY_F1: VT_SetTerminal(0); return;
929 case KEY_F2: VT_SetTerminal(1); return;
930 case KEY_F3: VT_SetTerminal(2); return;
931 case KEY_F4: VT_SetTerminal(3); return;
932 case KEY_F5: VT_SetTerminal(4); return;
933 case KEY_F6: VT_SetTerminal(5); return;
934 case KEY_F7: VT_SetTerminal(6); return;
935 case KEY_F8: VT_SetTerminal(7); return;
936 case KEY_F9: VT_SetTerminal(8); return;
937 case KEY_F10: VT_SetTerminal(9); return;
938 case KEY_F11: VT_SetTerminal(10); return;
939 case KEY_F12: VT_SetTerminal(11); return;
942 // Scrolling is only valid in text mode
943 if(gpVT_CurTerm->Mode != TERM_MODE_TEXT)
946 switch(Codepoint & KEY_CODEPOINT_MASK)
950 if( gpVT_CurTerm->Flags & VT_FLAG_ALTBUF )
952 gpVT_CurTerm->ViewPos = MAX(
954 gpVT_CurTerm->ViewPos - gpVT_CurTerm->Width
958 if( gpVT_CurTerm->Flags & VT_FLAG_ALTBUF )
960 gpVT_CurTerm->ViewPos = MIN(
961 gpVT_CurTerm->ViewPos + gpVT_CurTerm->Width,
962 gpVT_CurTerm->Width * gpVT_CurTerm->Height*giVT_Scrollback
970 if(term->Mode == TERM_MODE_TEXT)
975 // Ignore anything that isn't a press or refire
976 if( (Codepoint & KEY_ACTION_MASK) != KEY_ACTION_PRESS
977 && (Codepoint & KEY_ACTION_MASK) != KEY_ACTION_REFIRE
983 Codepoint &= KEY_CODEPOINT_MASK;
985 // Ignore Modifer Keys
986 if(Codepoint > KEY_MODIFIERS) return;
988 // Get UTF-8/ANSI Encoding
991 // 0: No translation, don't send to user
994 buf[0] = '\x1B'; buf[1] = '['; buf[2] = 'D';
998 buf[0] = '\x1B'; buf[1] = '['; buf[2] = 'C';
1002 buf[0] = '\x1B'; buf[1] = '['; buf[2] = 'A';
1006 buf[0] = '\x1B'; buf[1] = '['; buf[2] = 'B';
1011 buf[0] = '\x1B'; buf[1] = '['; buf[2] = '5'; buf[3] = '~';
1015 buf[0] = '\x1B'; buf[1] = '['; buf[2] = '6'; buf[3] = '~';
1019 // Attempt to encode in UTF-8
1021 len = WriteUTF8( buf, Codepoint );
1023 Warning("Codepoint (%x) is unrepresentable in UTF-8", Codepoint);
1029 // Unprintable / Don't Pass
1034 // Handle meta characters
1035 if( !(term->Flags & VT_FLAG_RAWIN) )
1047 if( MAX_INPUT_CHARS8 - term->InputWrite >= len )
1048 memcpy( &term->InputBuffer[term->InputWrite], buf, len );
1050 memcpy( &term->InputBuffer[term->InputWrite], buf, MAX_INPUT_CHARS8 - term->InputWrite );
1051 memcpy( &term->InputBuffer[0], buf, len - (MAX_INPUT_CHARS8 - term->InputWrite) );
1053 // Roll the buffer over
1054 term->InputWrite += len;
1055 term->InputWrite %= MAX_INPUT_CHARS8;
1056 if( (term->InputWrite - term->InputRead + MAX_INPUT_CHARS8)%MAX_INPUT_CHARS8 < len ) {
1057 term->InputRead = term->InputWrite + 1;
1058 term->InputRead %= MAX_INPUT_CHARS8;
1063 // Encode the raw key event
1064 Uint32 *raw_in = (void*)term->InputBuffer;
1068 if( term->InputWrite == term->InputRead )
1072 raw_in[ term->InputWrite ] = Codepoint;
1073 term->InputWrite ++;
1074 if(term->InputWrite >= MAX_INPUT_CHARS32)
1075 term->InputWrite -= MAX_INPUT_CHARS32;
1078 // TODO: Should old or new be dropped?
1079 if(term->InputRead == term->InputWrite) {
1081 if( term->InputRead >= MAX_INPUT_CHARS32 )
1082 term->InputRead -= MAX_INPUT_CHARS32;
1087 VFS_MarkAvaliable(&term->Node, 1);
1091 * \brief Clears a line in a virtual terminal
1092 * \param Term Terminal to modify
1093 * \param Num Line number to clear
1095 void VT_int_ClearLine(tVTerm *Term, int Num)
1100 if( Num < 0 || Num >= Term->TextHeight * (giVT_Scrollback + 1) ) return ;
1102 cell = (Term->Flags & VT_FLAG_ALTBUF) ? Term->AltBuf : Term->Text;
1103 cell = &cell[ Num*Term->TextWidth ];
1105 for( i = Term->TextWidth; i--; )
1108 cell[ i ].Colour = Term->CurColour;
1113 * \brief Handle a standard large escape code
1115 * Handles any escape code of the form \x1B[n,...A where n is an integer
1116 * and A is any letter.
1118 void VT_int_ParseEscape_StandardLarge(tVTerm *Term, char CmdChar, int argc, int *args)
1128 if(argc == 1) tmp *= args[0];
1129 if( Term->Flags & VT_FLAG_ALTBUF )
1131 if( (Term->AltWritePos + tmp) % Term->TextWidth == 0 ) {
1132 Term->AltWritePos -= Term->AltWritePos % Term->TextWidth;
1133 Term->AltWritePos += Term->TextWidth - 1;
1136 Term->AltWritePos += tmp;
1140 if( (Term->WritePos + tmp) % Term->TextWidth == 0 ) {
1141 Term->WritePos -= Term->WritePos % Term->TextWidth;
1142 Term->WritePos += Term->TextWidth - 1;
1145 Term->WritePos += tmp;
1153 case 0: // Erase below
1155 case 1: // Erase above
1157 case 2: // Erase all
1158 if( Term->Flags & VT_FLAG_ALTBUF )
1160 int i = Term->TextHeight;
1161 while( i-- ) VT_int_ClearLine(Term, i);
1162 Term->AltWritePos = 0;
1163 VT_int_UpdateScreen(Term, 1);
1167 int i = Term->TextHeight * (giVT_Scrollback + 1);
1168 while( i-- ) VT_int_ClearLine(Term, i);
1171 VT_int_UpdateScreen(Term, 1);
1181 case 0: // Erase to right
1182 if( Term->Flags & VT_FLAG_ALTBUF )
1185 max = Term->Width - Term->AltWritePos % Term->Width;
1186 for( i = 0; i < max; i ++ )
1187 Term->AltBuf[Term->AltWritePos+i].Ch = 0;
1192 max = Term->Width - Term->WritePos % Term->Width;
1193 for( i = 0; i < max; i ++ )
1194 Term->Text[Term->WritePos+i].Ch = 0;
1196 VT_int_UpdateScreen(Term, 0);
1198 case 1: // Erase to left
1199 if( Term->Flags & VT_FLAG_ALTBUF )
1201 int i = Term->AltWritePos % Term->Width;
1203 Term->AltBuf[Term->AltWritePos++].Ch = 0;
1207 int i = Term->WritePos % Term->Width;
1209 Term->Text[Term->WritePos++].Ch = 0;
1211 VT_int_UpdateScreen(Term, 0);
1213 case 2: // Erase all
1214 if( Term->Flags & VT_FLAG_ALTBUF )
1216 VT_int_ClearLine(Term, Term->AltWritePos / Term->Width);
1220 VT_int_ClearLine(Term, Term->WritePos / Term->Width);
1222 VT_int_UpdateScreen(Term, 0);
1227 // Set cursor position
1229 if( Term->Flags & VT_FLAG_ALTBUF )
1230 Term->AltWritePos = args[0] + args[1]*Term->TextWidth;
1232 Term->WritePos = args[0] + args[1]*Term->TextWidth;
1233 //Log_Debug("VTerm", "args = {%i, %i}", args[0], args[1]);
1236 // Scroll up `n` lines
1239 // Scroll down `n` lines
1241 if(argc == 1) tmp *= args[0];
1242 if( Term->Flags & VT_FLAG_ALTBUF )
1243 VT_int_ScrollText(Term, tmp);
1246 if(Term->ViewPos/Term->TextWidth + tmp < 0)
1248 if(Term->ViewPos/Term->TextWidth + tmp > Term->TextHeight * (giVT_Scrollback + 1))
1251 Term->ViewPos += Term->TextWidth*tmp;
1261 if( 0 <= args[argc] && args[argc] <= 8)
1265 case 0: Term->CurColour = DEFAULT_COLOUR; break; // Reset
1266 case 1: Term->CurColour |= 0x80000000; break; // Bright
1267 case 2: Term->CurColour &= ~0x80000000; break; // Dim
1270 // Foreground Colour
1271 else if(30 <= args[argc] && args[argc] <= 37) {
1272 // Get colour index, accounting for bright bit
1273 colour_idx = args[argc]-30 + ((Term->CurColour>>28) & 8);
1274 Term->CurColour &= 0x8000FFFF;
1275 Term->CurColour |= (Uint32)caVT100Colours[ colour_idx ] << 16;
1277 // Background Colour
1278 else if(40 <= args[argc] && args[argc] <= 47) {
1279 // Get colour index, accounting for bright bit
1280 colour_idx = args[argc]-40 + ((Term->CurColour>>12) & 8);
1281 Term->CurColour &= 0xFFFF8000;
1282 Term->CurColour |= caVT100Colours[ colour_idx ];
1285 Log_Warning("VTerm", "Unknown font flag %i", args[argc]);
1290 // Set scrolling region
1292 if( argc != 2 ) break;
1293 Term->ScrollTop = args[0];
1294 Term->ScrollHeight = args[1] - args[0];
1298 Log_Warning("VTerm", "Unknown control sequence '\\x1B[%c'", CmdChar);
1304 * \fn int VT_int_ParseEscape(tVTerm *Term, const char *Buffer)
1305 * \brief Parses a VT100 Escape code
1307 int VT_int_ParseEscape(tVTerm *Term, const char *Buffer)
1310 int argc = 0, j = 1;
1311 int args[6] = {0,0,0,0};
1312 int bQuestionMark = 0;
1324 if( '0' <= c && c <= '9' )
1327 if(c == ';') c = Buffer[j++];
1328 while('0' <= c && c <= '9') {
1330 args[argc] += c-'0';
1338 if( ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z'))
1344 // DEC Private Mode Set
1346 if(argc != 1) break;
1350 Term->Flags &= ~VT_FLAG_HIDECSR;
1353 VT_int_ToggleAltBuffer(Term, 1);
1358 if(argc != 1) break;
1362 Term->Flags |= VT_FLAG_HIDECSR;
1365 VT_int_ToggleAltBuffer(Term, 0);
1370 Log_Warning("VTerm", "Unknown control sequence '\\x1B[?%c'", c);
1376 VT_int_ParseEscape_StandardLarge(Term, c, argc, args);
1382 Log_Notice("VTerm", "TODO: Handle short escape codes");
1386 //Log_Debug("VTerm", "j = %i, Buffer = '%s'", j, Buffer);
1391 * \fn void VT_int_PutString(tVTerm *Term, const Uint8 *Buffer, Uint Count)
1392 * \brief Print a string to the Virtual Terminal
1394 void VT_int_PutString(tVTerm *Term, const Uint8 *Buffer, Uint Count)
1400 for( i = 0; i < Count; i++ )
1402 // Handle escape sequences
1403 if( Buffer[i] == 0x1B )
1406 i += VT_int_ParseEscape(Term, (const char*)&Buffer[i]) - 1;
1410 // Fast check for non UTF-8
1411 if( Buffer[i] < 128 ) // Plain ASCII
1412 VT_int_PutChar(Term, Buffer[i]);
1414 i += ReadUTF8(&Buffer[i], &val) - 1;
1415 VT_int_PutChar(Term, val);
1419 VT_int_UpdateScreen( Term, 0 );
1423 * \fn void VT_int_PutChar(tVTerm *Term, Uint32 Ch)
1424 * \brief Write a single character to a VTerm
1426 void VT_int_PutChar(tVTerm *Term, Uint32 Ch)
1432 if(Term->Flags & VT_FLAG_ALTBUF) {
1433 buffer = Term->AltBuf;
1434 write_pos = Term->AltWritePos;
1437 buffer = Term->Text;
1438 write_pos = Term->WritePos;
1443 case '\0': return; // Ignore NULL byte
1445 VT_int_UpdateScreen( Term, 0 ); // Update the line before newlining
1446 write_pos += Term->TextWidth;
1448 write_pos -= write_pos % Term->TextWidth;
1451 case '\t': { int tmp = write_pos / Term->TextWidth;
1452 write_pos %= Term->TextWidth;
1454 buffer[ write_pos ].Ch = '\0';
1455 buffer[ write_pos ].Colour = Term->CurColour;
1457 } while(write_pos & 7);
1458 write_pos += tmp * Term->TextWidth;
1462 // Backspace is invalid at Offset 0
1463 if(write_pos == 0) break;
1467 if(buffer[ write_pos ].Ch != '\0') {
1468 buffer[ write_pos ].Ch = 0;
1469 buffer[ write_pos ].Colour = Term->CurColour;
1473 i = 7; // Limit it to 8
1475 buffer[ write_pos ].Ch = 0;
1476 buffer[ write_pos ].Colour = Term->CurColour;
1478 } while(write_pos && i-- && buffer[ write_pos ].Ch == '\0');
1479 if(buffer[ write_pos ].Ch != '\0')
1484 buffer[ write_pos ].Ch = Ch;
1485 buffer[ write_pos ].Colour = Term->CurColour;
1486 // Update the line before wrapping
1487 if( (write_pos + 1) % Term->TextWidth == 0 )
1488 VT_int_UpdateScreen( Term, 0 );
1493 if(Term->Flags & VT_FLAG_ALTBUF)
1495 Term->AltBuf = buffer;
1496 Term->AltWritePos = write_pos;
1498 if(Term->AltWritePos >= Term->TextWidth*Term->TextHeight)
1500 Term->AltWritePos -= Term->TextWidth;
1501 VT_int_ScrollText(Term, 1);
1507 Term->Text = buffer;
1508 Term->WritePos = write_pos;
1510 // - Check if we need to scroll the entire scrollback buffer
1511 if(Term->WritePos >= Term->TextWidth*Term->TextHeight*(giVT_Scrollback+1))
1515 // Update previous line
1516 Term->WritePos -= Term->TextWidth;
1517 VT_int_UpdateScreen( Term, 0 );
1519 // Update view position
1520 base = Term->TextWidth*Term->TextHeight*(giVT_Scrollback);
1521 if(Term->ViewPos < base)
1522 Term->ViewPos += Term->Width;
1523 if(Term->ViewPos > base)
1524 Term->ViewPos = base;
1526 VT_int_ScrollText(Term, 1);
1528 // Ok, so we only need to scroll the screen
1529 else if(Term->WritePos >= Term->ViewPos + Term->TextWidth*Term->TextHeight)
1531 // Update the last line
1532 Term->WritePos -= Term->TextWidth;
1533 VT_int_UpdateScreen( Term, 0 );
1534 Term->WritePos += Term->TextWidth;
1536 VT_int_ScrollText(Term, 1);
1538 Term->ViewPos += Term->TextWidth;
1545 void VT_int_ScrollText(tVTerm *Term, int Count)
1548 int height, init_write_pos;
1550 int scroll_top, scroll_height;
1552 // Get buffer pointer and attributes
1553 if( Term->Flags & VT_FLAG_ALTBUF )
1556 height = Term->TextHeight;
1557 init_write_pos = Term->AltWritePos;
1558 scroll_top = Term->ScrollTop;
1559 scroll_height = Term->ScrollHeight;
1564 height = Term->TextHeight*(giVT_Scrollback+1);
1565 init_write_pos = Term->WritePos;
1567 scroll_height = height;
1570 // Scroll text downwards
1576 if(Count > scroll_height) Count = scroll_height;
1577 base = Term->TextWidth*(scroll_top + scroll_height - Count);
1578 len = Term->TextWidth*(scroll_height - Count);
1580 // Scroll terminal cache
1582 &buf[Term->TextWidth*scroll_top],
1583 &buf[Term->TextWidth*(scroll_top+Count)],
1584 len*sizeof(tVT_Char)
1587 for( i = 0; i < Term->TextWidth*Count; i ++ )
1589 buf[ base + i ].Ch = 0;
1590 buf[ base + i ].Colour = Term->CurColour;
1594 VT_int_ScrollFramebuffer( Term, Count );
1595 if( Term->Flags & VT_FLAG_ALTBUF )
1596 Term->AltWritePos = base;
1598 Term->WritePos = Term->ViewPos + Term->TextWidth*(Term->TextHeight - Count);
1599 for( i = 0; i < Count; i ++ )
1601 VT_int_UpdateScreen( Term, 0 );
1602 if( Term->Flags & VT_FLAG_ALTBUF )
1603 Term->AltWritePos += Term->TextWidth;
1605 Term->WritePos += Term->TextWidth;
1611 if(Count > scroll_height) Count = scroll_height;
1613 len = Term->TextWidth*(scroll_height - Count);
1615 // Scroll terminal cache
1617 &buf[Term->TextWidth*(scroll_top+Count)],
1618 &buf[Term->TextWidth*scroll_top],
1619 len*sizeof(tVT_Char)
1621 // Clear preceding rows
1622 for( i = 0; i < Term->TextWidth*Count; i ++ )
1625 buf[ i ].Colour = Term->CurColour;
1628 VT_int_ScrollFramebuffer( Term, -Count );
1629 if( Term->Flags & VT_FLAG_ALTBUF )
1630 Term->AltWritePos = Term->TextWidth*scroll_top;
1632 Term->WritePos = Term->ViewPos;
1633 for( i = 0; i < Count; i ++ )
1635 VT_int_UpdateScreen( Term, 0 );
1636 if( Term->Flags & VT_FLAG_ALTBUF )
1637 Term->AltWritePos += Term->TextWidth;
1639 Term->WritePos += Term->TextWidth;
1643 if( Term->Flags & VT_FLAG_ALTBUF )
1644 Term->AltWritePos = init_write_pos;
1646 Term->WritePos = init_write_pos;
1650 * \fn void VT_int_ScrollFramebuffer( tVTerm *Term, int Count )
1651 * \note Scrolls the framebuffer down by \a Count text lines
1653 void VT_int_ScrollFramebuffer( tVTerm *Term, int Count )
1663 // Only update if this is the current terminal
1664 if( Term != gpVT_CurTerm ) return;
1666 if( Count > Term->ScrollHeight ) Count = Term->ScrollHeight;
1667 if( Count < -Term->ScrollHeight ) Count = -Term->ScrollHeight;
1669 // Switch to 2D Command Stream
1670 tmp = VIDEO_BUFFMT_2DSTREAM;
1671 VFS_IOCtl(giVT_OutputDevHandle, VIDEO_IOCTL_SETBUFFORMAT, &tmp);
1673 // BLIT to 0,0 from 0,giVT_CharHeight
1674 buf.Op = VIDEO_2DOP_BLIT;
1675 buf.SrcX = 0; buf.DstX = 0;
1676 // TODO: Don't assume character dimensions
1677 buf.W = Term->TextWidth * giVT_CharWidth;
1680 buf.SrcY = (Term->ScrollTop+Count) * giVT_CharHeight;
1681 buf.DstY = Term->ScrollTop * giVT_CharHeight;
1683 else // Scroll up, move text down
1686 buf.SrcY = Term->ScrollTop * giVT_CharHeight;
1687 buf.DstY = (Term->ScrollTop+Count) * giVT_CharHeight;
1689 buf.H = (Term->ScrollHeight-Count) * giVT_CharHeight;
1690 VFS_WriteAt(giVT_OutputDevHandle, 0, sizeof(buf), &buf);
1692 // Restore old mode (this function is only called during text mode)
1693 tmp = VIDEO_BUFFMT_TEXT;
1694 VFS_IOCtl(giVT_OutputDevHandle, VIDEO_IOCTL_SETBUFFORMAT, &tmp);
1697 void VT_int_UpdateCursor( tVTerm *Term, int bShow )
1699 tVideo_IOCtl_Pos csr_pos;
1701 if( Term != gpVT_CurTerm ) return ;
1708 else if( Term->Mode == TERM_MODE_TEXT )
1712 // if( !(Term->Flags & VT_FLAG_SHOWCSR)
1713 // && ( (Term->Flags & VT_FLAG_HIDECSR) || !Term->Node.ReadThreads)
1715 if( !Term->Text || Term->Flags & VT_FLAG_HIDECSR )
1722 if(Term->Flags & VT_FLAG_ALTBUF)
1723 offset = Term->AltWritePos;
1725 offset = Term->WritePos - Term->ViewPos;
1727 csr_pos.x = offset % Term->TextWidth;
1728 csr_pos.y = offset / Term->TextWidth;
1729 if( 0 > csr_pos.y || csr_pos.y >= Term->TextHeight )
1730 csr_pos.y = -1, csr_pos.x = -1;
1735 csr_pos.x = Term->VideoCursorX;
1736 csr_pos.y = Term->VideoCursorY;
1738 VFS_IOCtl(giVT_OutputDevHandle, VIDEO_IOCTL_SETCURSOR, &csr_pos);
1742 * \fn void VT_int_UpdateScreen( tVTerm *Term, int UpdateAll )
1743 * \brief Updates the video framebuffer
1745 void VT_int_UpdateScreen( tVTerm *Term, int UpdateAll )
1748 int view_pos, write_pos;
1749 // Only update if this is the current terminal
1750 if( Term != gpVT_CurTerm ) return;
1752 switch( Term->Mode )
1754 case TERM_MODE_TEXT:
1755 view_pos = (Term->Flags & VT_FLAG_ALTBUF) ? 0 : Term->ViewPos;
1756 write_pos = (Term->Flags & VT_FLAG_ALTBUF) ? Term->AltWritePos : Term->WritePos;
1757 buffer = (Term->Flags & VT_FLAG_ALTBUF) ? Term->AltBuf : Term->Text;
1758 // Re copy the entire screen?
1761 giVT_OutputDevHandle,
1763 Term->TextWidth*Term->TextHeight*sizeof(tVT_Char),
1767 // Only copy the current line
1769 int ofs = write_pos - write_pos % Term->TextWidth;
1771 giVT_OutputDevHandle,
1772 (ofs - view_pos)*sizeof(tVT_Char),
1773 Term->TextWidth*sizeof(tVT_Char),
1782 VT_int_UpdateCursor(Term, 1);
1786 * \brief Update the screen mode
1787 * \param Term Terminal to update
1788 * \param NewMode New mode to set
1789 * \param NewWidth New framebuffer width
1790 * \param NewHeight New framebuffer height
1792 void VT_int_ChangeMode(tVTerm *Term, int NewMode, int NewWidth, int NewHeight)
1794 int oldW = Term->Width;
1795 int oldTW = Term->TextWidth;
1796 int oldH = Term->Height;
1797 int oldTH = Term->TextHeight;
1798 tVT_Char *oldTBuf = Term->Text;
1799 Uint32 *oldFB = Term->Buffer;
1802 // TODO: Increase RealWidth/RealHeight when this happens
1803 if(NewWidth > giVT_RealWidth) NewWidth = giVT_RealWidth;
1804 if(NewHeight > giVT_RealHeight) NewHeight = giVT_RealHeight;
1806 Term->Mode = NewMode;
1808 // Fast exit if no resolution change
1809 if(NewWidth == Term->Width && NewHeight == Term->Height)
1812 // Calculate new dimensions
1813 Term->Width = NewWidth;
1814 Term->Height = NewHeight;
1815 Term->TextWidth = NewWidth / giVT_CharWidth;
1816 Term->TextHeight = NewHeight / giVT_CharHeight;
1817 Term->ScrollHeight = Term->TextHeight - (oldTH - Term->ScrollHeight) - Term->ScrollTop;
1819 // Allocate new buffers
1821 Term->Text = calloc(
1822 Term->TextWidth * Term->TextHeight * (giVT_Scrollback+1),
1827 w = (oldTW > Term->TextWidth) ? Term->TextWidth : oldTW;
1828 h = (oldTH > Term->TextHeight) ? Term->TextHeight : oldTH;
1829 h *= giVT_Scrollback + 1;
1830 for( i = 0; i < h; i ++ )
1833 &Term->Text[i*Term->TextWidth],
1842 Term->AltBuf = realloc(
1844 Term->TextWidth * Term->TextHeight * sizeof(tVT_Char)
1849 Term->Buffer = calloc( Term->Width * Term->Height, sizeof(Uint32) );
1851 w = (oldW > Term->Width) ? Term->Width : oldW;
1852 h = (oldH > Term->Height) ? Term->Height : oldH;
1853 for( i = 0; i < h; i ++ )
1856 &Term->Buffer[i*Term->Width],
1867 case TERM_MODE_TEXT:
1868 Log_Log("VTerm", "Set VT %p to text mode (%ix%i)",
1869 Term, Term->TextWidth, Term->TextHeight);
1872 Log_Log("VTerm", "Set VT %p to framebuffer mode (%ix%i)",
1873 Term, Term->Width, Term->Height);
1875 //case TERM_MODE_2DACCEL:
1876 //case TERM_MODE_3DACCEL:
1882 void VT_int_ToggleAltBuffer(tVTerm *Term, int Enabled)
1885 Term->Flags |= VT_FLAG_ALTBUF;
1887 Term->Flags &= ~VT_FLAG_ALTBUF;
1888 VT_int_UpdateScreen(Term, 1);
1894 #define MONOSPACE_FONT 10816
1896 #if MONOSPACE_FONT == 10808 // 8x8
1897 # include "vterm_font_8x8.h"
1898 #elif MONOSPACE_FONT == 10816 // 8x16
1899 # include "vterm_font_8x16.h"
1902 // === PROTOTYPES ===
1903 Uint8 *VT_Font_GetChar(Uint32 Codepoint);
1906 int giVT_CharWidth = FONT_WIDTH;
1907 int giVT_CharHeight = FONT_HEIGHT;
1911 * \brief Render a font character
1913 void VT_Font_Render(Uint32 Codepoint, void *Buffer, int Depth, int Pitch, Uint32 BGC, Uint32 FGC)
1921 Uint8 *buf = Buffer;
1923 font = VT_Font_GetChar(Codepoint);
1925 for(y = 0; y < FONT_HEIGHT; y ++)
1927 for(x = 0; x < FONT_WIDTH; x ++)
1929 if(*font & (1 << (FONT_WIDTH-x-1)))
1934 buf = (void*)( (tVAddr)buf + Pitch );
1939 else if( Depth <= 16 )
1941 Uint16 *buf = Buffer;
1943 font = VT_Font_GetChar(Codepoint);
1945 for(y = 0; y < FONT_HEIGHT; y ++)
1947 for(x = 0; x < FONT_WIDTH; x ++)
1949 if(*font & (1 << (FONT_WIDTH-x-1)))
1954 buf = (void*)( (tVAddr)buf + Pitch );
1959 // - Special handling to not overwrite the next pixel
1960 //TODO: Endian issues here
1961 else if( Depth == 24 )
1963 Uint8 *buf = Buffer;
1964 Uint8 bg_r = (BGC >> 16) & 0xFF;
1965 Uint8 bg_g = (BGC >> 8) & 0xFF;
1966 Uint8 bg_b = (BGC >> 0) & 0xFF;
1967 Uint8 fg_r = (FGC >> 16) & 0xFF;
1968 Uint8 fg_g = (FGC >> 8) & 0xFF;
1969 Uint8 fg_b = (FGC >> 0) & 0xFF;
1971 font = VT_Font_GetChar(Codepoint);
1973 for(y = 0; y < FONT_HEIGHT; y ++)
1975 for(x = 0; x < FONT_WIDTH; x ++)
1979 if(*font & (1 << (FONT_WIDTH-x-1))) {
1980 r = fg_r; g = fg_g; b = fg_b;
1983 r = bg_r; g = bg_g; b = bg_b;
1989 buf = (void*)( (tVAddr)buf + Pitch );
1993 // 32-bpp colour (nice and easy)
1994 else if( Depth == 32 )
1996 Uint32 *buf = Buffer;
1998 font = VT_Font_GetChar(Codepoint);
2000 for(y = 0; y < FONT_HEIGHT; y ++)
2002 for(x = 0; x < FONT_WIDTH; x ++)
2004 if(*font & (1 << (FONT_WIDTH-x-1)))
2009 buf = (Uint32*)( (tVAddr)buf + Pitch );
2016 * \fn Uint32 VT_Colour12to24(Uint16 Col12)
2017 * \brief Converts a 12-bit colour into 24 bits
2019 Uint32 VT_Colour12to24(Uint16 Col12)
2024 ret = (tmp << 0) | (tmp << 4);
2025 tmp = (Col12 & 0xF0) >> 4;
2026 ret |= (tmp << 8) | (tmp << 12);
2027 tmp = (Col12 & 0xF00) >> 8;
2028 ret |= (tmp << 16) | (tmp << 20);
2032 * \brief Converts a 12-bit colour into 15 bits
2034 Uint16 VT_Colour12to15(Uint16 Col12)
2039 ret = (tmp << 1) | (tmp & 1);
2040 tmp = (Col12 & 0xF0) >> 4;
2041 ret |= ( (tmp << 1) | (tmp & 1) ) << 5;
2042 tmp = (Col12 & 0xF00) >> 8;
2043 ret |= ( (tmp << 1) | (tmp & 1) ) << 10;
2048 * \brief Converts a 12-bit colour into any other depth
2049 * \param Col12 12-bit source colour
2050 * \param Depth Desired bit deptj
2051 * \note Green then blue get the extra avaliable bits (16:5-6-5, 14:4-5-5)
2053 Uint32 VT_Colour12toN(Uint16 Col12, int Depth)
2057 int rSize, gSize, bSize;
2060 if( Depth == 24 ) return VT_Colour12to24(Col12);
2061 if( Depth == 15 ) return VT_Colour12to15(Col12);
2062 // - 32 is a special case, it's usually 24-bit colour with an unused byte
2063 if( Depth == 32 ) return VT_Colour12to24(Col12);
2066 if( Depth < 8 ) return 0;
2067 if( Depth > 32 ) return 0;
2070 g = (Col12 & 0xF0) >> 4;
2071 b = (Col12 & 0xF00) >> 8;
2073 rSize = gSize = bSize = Depth / 3;
2074 if( rSize + gSize + bSize < Depth ) // Depth % 3 == 1
2076 if( rSize + gSize + bSize < Depth ) // Depth % 3 == 2
2080 r <<= rSize - 4; g <<= gSize - 4; b <<= bSize - 4;
2081 // Fill with the lowest bit
2082 if( Col12 & 0x001 ) r |= (1 << (rSize - 4)) - 1;
2083 if( Col12 & 0x010 ) r |= (1 << (gSize - 4)) - 1;
2084 if( Col12 & 0x100 ) r |= (1 << (bSize - 4)) - 1;
2089 ret |= b << (rSize + gSize);
2095 * \fn Uint8 *VT_Font_GetChar(Uint32 Codepoint)
2096 * \brief Gets an index into the font array given a Unicode Codepoint
2097 * \note See http://en.wikipedia.org/wiki/CP437
2099 Uint8 *VT_Font_GetChar(Uint32 Codepoint)
2103 return &VTermFont[Codepoint*FONT_HEIGHT];
2106 case 0xC7: index = 128; break; // Ç
2107 case 0xFC: index = 129; break; // ü
2108 case 0xE9: index = 130; break; // é
2109 case 0xE2: index = 131; break; // â
2110 case 0xE4: index = 132; break; // ä
2111 case 0xE0: index = 133; break; // à
2112 case 0xE5: index = 134; break; // å
2113 case 0xE7: index = 135; break; // ç
2114 case 0xEA: index = 136; break; // ê
2115 case 0xEB: index = 137; break; // ë
2116 case 0xE8: index = 138; break; // è
2117 case 0xEF: index = 139; break; // ï
2118 case 0xEE: index = 140; break; // î
2119 case 0xEC: index = 141; break; // ì
2120 case 0xC4: index = 142; break; // Ä
2121 case 0xC5: index = 143; break; // Å
2124 return &VTermFont[index*FONT_HEIGHT];
2127 EXPORTAS(&giVT_CharWidth, giVT_CharWidth);
2128 EXPORTAS(&giVT_CharHeight, giVT_CharHeight);
2129 EXPORT(VT_Font_Render);
2130 EXPORT(VT_Colour12to24);