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 int VT_int_ParseEscape(tVTerm *Term, char *Buffer);
106 void VT_int_PutChar(tVTerm *Term, Uint32 Ch);
107 void VT_int_ScrollText(tVTerm *Term, int Count);
108 void VT_int_ScrollFramebuffer( tVTerm *Term, int Count );
109 void VT_int_UpdateCursor( tVTerm *Term, int bShow );
110 void VT_int_UpdateScreen( tVTerm *Term, int UpdateAll );
111 void VT_int_ChangeMode(tVTerm *Term, int NewMode, int NewWidth, int NewHeight);
112 void VT_int_ToggleAltBuffer(tVTerm *Term, int Enabled);
115 const Uint16 caVT100Colours[] = {
116 // Black, Red, Green, Yellow, Blue, Purple, Cyan, Gray
117 // Same again, but bright
118 VT_COL_BLACK, 0x700, 0x070, 0x770, 0x007, 0x707, 0x077, 0xAAA,
119 VT_COL_GREY, 0xF00, 0x0F0, 0xFF0, 0x00F, 0xF0F, 0x0FF, VT_COL_WHITE
123 MODULE_DEFINE(0, VERSION, VTerm, VT_Install, NULL, DEFAULT_INPUT, NULL);
124 tDevFS_Driver gVT_DrvInfo = {
127 .Flags = VFS_FFLAG_DIRECTORY,
131 .ReadDir = VT_ReadDir,
132 .FindDir = VT_FindDir,
133 .IOCtl = VT_Root_IOCtl
137 tVTerm gVT_Terminals[NUM_VTS];
138 int giVT_CurrentTerminal = 0;
139 tVTerm *gpVT_CurTerm = &gVT_Terminals[0];
140 // --- Video State ---
141 short giVT_RealWidth = DEFAULT_WIDTH; //!< Screen Width
142 short giVT_RealHeight = DEFAULT_HEIGHT; //!< Screen Height
143 int giVT_Scrollback = DEFAULT_SCROLLBACK;
144 // --- Driver Handles ---
145 char *gsVT_OutputDevice = NULL;
146 char *gsVT_InputDevice = NULL;
147 int giVT_OutputDevHandle = -2;
148 int giVT_InputDevHandle = -2;
149 // --- Key States --- (Used for VT Switching/Magic Combos)
150 int gbVT_CtrlDown = 0;
151 int gbVT_AltDown = 0;
152 int gbVT_SysrqDown = 0;
156 * \fn int VT_Install(char **Arguments)
157 * \brief Installs the Virtual Terminal Driver
159 int VT_Install(char **Arguments)
168 for(args = Arguments; (arg = *args); args++ )
170 char data[strlen(arg)+1];
174 val = strchr(arg, '=');
177 data[ val - arg ] = '\0';
180 Log_Debug("VTerm", "Argument '%s'", arg);
182 if( strcmp(opt, "Video") == 0 ) {
183 if( !gsVT_OutputDevice )
184 gsVT_OutputDevice = strdup(val);
186 else if( strcmp(opt, "Input") == 0 ) {
187 if( !gsVT_InputDevice )
188 gsVT_InputDevice = strdup(val);
190 else if( strcmp(opt, "Width") == 0 ) {
191 giVT_RealWidth = atoi( val );
193 else if( strcmp(opt, "Height") == 0 ) {
194 giVT_RealHeight = atoi( val );
196 else if( strcmp(opt, "Scrollback") == 0 ) {
197 giVT_Scrollback = atoi( val );
203 if(!gsVT_OutputDevice) gsVT_OutputDevice = (char*)DEFAULT_OUTPUT;
204 else if( Module_EnsureLoaded( gsVT_OutputDevice ) ) gsVT_OutputDevice = (char*)DEFAULT_OUTPUT;
205 if( Module_EnsureLoaded( gsVT_OutputDevice ) ) gsVT_OutputDevice = (char*)FALLBACK_OUTPUT;
206 if( Module_EnsureLoaded( gsVT_OutputDevice ) ) {
207 Log_Error("VTerm", "Fallback video '%s' is not avaliable, giving up", FALLBACK_OUTPUT);
208 return MODULE_ERR_MISC;
211 if(!gsVT_InputDevice) gsVT_InputDevice = (char*)DEFAULT_INPUT;
212 else if( Module_EnsureLoaded( gsVT_InputDevice ) ) gsVT_InputDevice = (char*)DEFAULT_INPUT;
214 // Create device paths
217 tmp = malloc( 9 + strlen(gsVT_OutputDevice) + 1 );
218 strcpy(tmp, "/Devices/");
219 strcpy(&tmp[9], gsVT_OutputDevice);
220 gsVT_OutputDevice = tmp;
222 tmp = malloc( 9 + strlen(gsVT_InputDevice) + 1 );
223 strcpy(tmp, "/Devices/");
224 strcpy(&tmp[9], gsVT_InputDevice);
225 gsVT_InputDevice = tmp;
228 Log_Log("VTerm", "Using '%s' as output", gsVT_OutputDevice);
229 Log_Log("VTerm", "Using '%s' as input", gsVT_InputDevice);
235 for( i = 0; i < NUM_VTS; i++ )
237 gVT_Terminals[i].Mode = TERM_MODE_TEXT;
238 gVT_Terminals[i].Flags = 0;
239 gVT_Terminals[i].CurColour = DEFAULT_COLOUR;
240 gVT_Terminals[i].WritePos = 0;
241 gVT_Terminals[i].AltWritePos = 0;
242 gVT_Terminals[i].ViewPos = 0;
243 gVT_Terminals[i].ReadingThread = -1;
244 gVT_Terminals[i].ScrollHeight = 0;
247 VT_int_ChangeMode( &gVT_Terminals[i],
248 TERM_MODE_TEXT, giVT_RealWidth, giVT_RealHeight );
250 gVT_Terminals[i].Name[0] = '0'+i;
251 gVT_Terminals[i].Name[1] = '\0';
252 gVT_Terminals[i].Node.Inode = i;
253 gVT_Terminals[i].Node.ImplPtr = &gVT_Terminals[i];
254 gVT_Terminals[i].Node.NumACLs = 0; // Only root can open virtual terminals
256 gVT_Terminals[i].Node.Read = VT_Read;
257 gVT_Terminals[i].Node.Write = VT_Write;
258 gVT_Terminals[i].Node.IOCtl = VT_Terminal_IOCtl;
259 // Semaphore_Init(&gVT_Terminals[i].InputSemaphore, 0, MAX_INPUT_CHARS8, "VTerm", gVT_Terminals[i].Name);
263 DevFS_AddDevice( &gVT_DrvInfo );
265 // Set kernel output to VT0
266 Debug_SetKTerminal("/Devices/VTerm/0");
268 return MODULE_ERR_OK;
272 * \fn void VT_InitOutput()
273 * \brief Initialise Video Output
277 giVT_OutputDevHandle = VFS_Open(gsVT_OutputDevice, VFS_OPENFLAG_WRITE);
278 if(giVT_OutputDevHandle == -1) {
279 Log_Warning("VTerm", "Oh F**k, I can't open the video device '%s'", gsVT_OutputDevice);
282 VT_SetResolution( giVT_RealWidth, giVT_RealHeight );
284 VT_SetMode( VIDEO_BUFFMT_TEXT );
288 * \fn void VT_InitInput()
289 * \brief Initialises the input
293 giVT_InputDevHandle = VFS_Open(gsVT_InputDevice, VFS_OPENFLAG_READ);
294 if(giVT_InputDevHandle == -1) {
295 Log_Warning("VTerm", "Can't open the input device '%s'", gsVT_InputDevice);
298 VFS_IOCtl(giVT_InputDevHandle, KB_IOCTL_SETCALLBACK, VT_KBCallBack);
302 * \brief Set the video resolution
303 * \param Width New screen width
304 * \param Height New screen height
306 void VT_SetResolution(int Width, int Height)
308 tVideo_IOCtl_Mode mode = {0};
312 // Create the video mode
314 mode.height = Height;
319 VFS_IOCtl( giVT_OutputDevHandle, VIDEO_IOCTL_FINDMODE, &mode );
321 if( Width != mode.width || Height != mode.height )
324 "Selected resolution (%ix%i is not supported) by the device, using (%ix%i)",
325 giVT_RealWidth, giVT_RealHeight,
326 mode.width, mode.height
329 VFS_IOCtl( giVT_OutputDevHandle, VIDEO_IOCTL_GETSETMODE, &tmp );
331 // Resize text terminals if needed
332 if( gVT_Terminals[0].Text && (giVT_RealWidth != mode.width || giVT_RealHeight != mode.height) )
334 int newBufSize = (giVT_RealWidth/giVT_CharWidth)
335 *(giVT_RealHeight/giVT_CharHeight)
336 *(giVT_Scrollback+1);
338 // Resize the text terminals
339 giVT_RealWidth = mode.width;
340 giVT_RealHeight = mode.height;
341 Log_Debug("VTerm", "Resizing terminals to %ix%i",
342 giVT_RealWidth/giVT_CharWidth, giVT_RealHeight/giVT_CharHeight);
343 for( i = 0; i < NUM_VTS; i ++ )
345 if( gVT_Terminals[i].Mode != TERM_MODE_TEXT ) continue;
347 gVT_Terminals[i].TextWidth = giVT_RealWidth/giVT_CharWidth;
348 gVT_Terminals[i].TextHeight = giVT_RealHeight/giVT_CharHeight;
349 gVT_Terminals[i].ScrollHeight = gVT_Terminals[i].TextHeight;
351 gVT_Terminals[i].Text = realloc(
352 gVT_Terminals[i].Text,
353 newBufSize*sizeof(tVT_Char)
360 * \brief Set video output buffer mode
362 void VT_SetMode(int Mode)
364 VFS_IOCtl( giVT_OutputDevHandle, VIDEO_IOCTL_SETBUFFORMAT, &Mode );
368 * \fn char *VT_ReadDir(tVFS_Node *Node, int Pos)
369 * \brief Read from the VTerm Directory
371 char *VT_ReadDir(tVFS_Node *Node, int Pos)
373 if(Pos < 0) return NULL;
374 if(Pos >= NUM_VTS) return NULL;
375 return strdup( gVT_Terminals[Pos].Name );
379 * \fn tVFS_Node *VT_FindDir(tVFS_Node *Node, const char *Name)
380 * \brief Find an item in the VTerm directory
381 * \param Node Root node
382 * \param Name Name (number) of the terminal
384 tVFS_Node *VT_FindDir(tVFS_Node *Node, const char *Name)
388 ENTER("pNode sName", Node, Name);
390 // Open the input and output files if needed
391 if(giVT_OutputDevHandle == -2) VT_InitOutput();
392 if(giVT_InputDevHandle == -2) VT_InitInput();
395 if(Name[0] < '0' || Name[0] > '9' || Name[1] != '\0') {
406 LEAVE('p', &gVT_Terminals[num].Node);
407 return &gVT_Terminals[num].Node;
411 * \fn int VT_Root_IOCtl(tVFS_Node *Node, int Id, void *Data)
412 * \brief Control the VTerm Driver
414 int VT_Root_IOCtl(tVFS_Node *Node, int Id, void *Data)
419 case DRV_IOCTL_TYPE: return DRV_TYPE_MISC;
420 case DRV_IOCTL_IDENT: memcpy(Data, "VT\0\0", 4); return 0;
421 case DRV_IOCTL_VERSION: return VERSION;
422 case DRV_IOCTL_LOOKUP: return 0;
424 case 4: // Get Video Driver
425 if(Data) strcpy(Data, gsVT_OutputDevice);
426 return strlen(gsVT_OutputDevice);
428 case 5: // Set Video Driver
429 if(!Data) return -EINVAL;
430 if(Threads_GetUID() != 0) return -EACCES;
434 // TODO: Check if the string used is a heap string
436 free(gsVT_OutputDevice);
438 gsVT_OutputDevice = malloc(len+1);
439 strcpy(gsVT_OutputDevice, Data);
441 VFS_Close(giVT_OutputDevHandle);
442 giVT_OutputDevHandle = -1;
451 * \brief Read from a virtual terminal
453 Uint64 VT_Read(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
457 tVTerm *term = &gVT_Terminals[ Node->Inode ];
458 Uint32 *codepoint_buf = Buffer;
459 Uint32 *codepoint_in;
461 Mutex_Acquire( &term->ReadingLock );
464 VT_int_UpdateCursor(term, 1);
466 // Check current mode
471 VFS_SelectNode(Node, VFS_SELECT_READ, NULL, "VT_Read (UTF-8)");
473 avail = term->InputWrite - term->InputRead;
475 avail += MAX_INPUT_CHARS8;
476 if(avail > Length - pos)
477 avail = Length - pos;
481 ((char*)Buffer)[pos] = term->InputBuffer[term->InputRead];
484 while(term->InputRead > MAX_INPUT_CHARS8)
485 term->InputRead -= MAX_INPUT_CHARS8;
492 VFS_SelectNode(Node, VFS_SELECT_READ, NULL, "VT_Read (UCS-4)");
494 avail = term->InputWrite - term->InputRead;
496 avail += MAX_INPUT_CHARS32;
497 if(avail > Length - pos)
498 avail = Length/4 - pos;
500 codepoint_in = (void*)term->InputBuffer;
501 codepoint_buf = Buffer;
505 codepoint_buf[pos] = codepoint_in[term->InputRead];
508 while(term->InputRead > MAX_INPUT_CHARS32)
509 term->InputRead -= MAX_INPUT_CHARS32;
515 // Mark none avaliable if buffer empty
516 if( term->InputRead == term->InputWrite )
517 VFS_MarkAvaliable(&term->Node, 0);
519 term->ReadingThread = -1;
521 // VT_int_UpdateCursor(term, term->Mode == TERM_MODE_TEXT);
523 Mutex_Release( &term->ReadingLock );
529 * \fn Uint64 VT_Write(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
530 * \brief Write to a virtual terminal
532 Uint64 VT_Write(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
534 tVTerm *term = &gVT_Terminals[ Node->Inode ];
542 VT_int_PutString(term, Buffer, Length);
548 size = term->Width*term->Height*4;
549 if( Offset > size ) {
550 Log_Notice("VTerm", "VT_Write: Offset (0x%llx) > FBSize (0x%x)",
554 if( Offset + Length > size ) {
555 Log_Notice("VTerm", "VT_Write: Offset+Length (0x%llx) > FBSize (0x%x)",
556 Offset+Length, size);
557 Length = size - Offset;
560 // Copy to the local cache
561 memcpy( (void*)((Uint)term->Buffer + (Uint)Offset), Buffer, Length );
563 // Update screen if needed
564 if( Node->Inode == giVT_CurrentTerminal )
566 // Fill entire screen?
567 if( giVT_RealWidth > term->Width || giVT_RealHeight > term->Height )
569 // No? :( Well, just center it
571 x = Offset/4; y = x / term->Width; x %= term->Width;
572 w = Length/4+x; h = w / term->Width; w %= term->Width;
574 x += (giVT_RealWidth - term->Width) / 2;
575 y += (giVT_RealHeight - term->Height) / 2;
578 VFS_WriteAt( giVT_OutputDevHandle,
579 (x + y * giVT_RealWidth)*4,
583 Buffer = (void*)( (Uint)Buffer + term->Width*4 );
589 return VFS_WriteAt( giVT_OutputDevHandle, Offset, Length, Buffer );
592 // Just pass on (for now)
593 // TODO: Handle locally too to ensure no information is lost on
594 // VT Switch (and to isolate terminals from each other)
595 case TERM_MODE_2DACCEL:
596 //case TERM_MODE_3DACCEL:
597 if( Node->Inode == giVT_CurrentTerminal )
599 VFS_Write( giVT_OutputDevHandle, Length, Buffer );
608 * \fn int VT_Terminal_IOCtl(tVFS_Node *Node, int Id, void *Data)
609 * \brief Call an IO Control on a virtual terminal
611 int VT_Terminal_IOCtl(tVFS_Node *Node, int Id, void *Data)
615 tVTerm *term = Node->ImplPtr;
616 ENTER("pNode iId pData", Node, Id, Data);
618 if(Id >= DRV_IOCTL_LOOKUP) {
619 // Only root can fiddle with graphics modes
620 // TODO: Remove this and replace with user ownership
621 if( Threads_GetUID() != 0 ) return -1;
628 LEAVE('i', DRV_TYPE_TERMINAL);
629 return DRV_TYPE_TERMINAL;
630 case DRV_IOCTL_IDENT:
631 memcpy(Data, "VT\0\0", 4);
634 case DRV_IOCTL_VERSION:
637 case DRV_IOCTL_LOOKUP:
641 // Get/Set the mode (and apply any changes)
642 case TERM_IOCTL_MODETYPE:
645 if( CheckMem(Data, sizeof(int)) == 0 ) {
649 Log_Log("VTerm", "VTerm %i mode set to %i", (int)Node->Inode, *iData);
651 // Update mode if needed
652 if( term->Mode != *iData || term->NewWidth || term->NewHeight)
654 // Adjust for text mode
655 if( *iData == TERM_MODE_TEXT ) {
656 term->NewHeight *= giVT_CharHeight;
657 term->NewWidth *= giVT_CharWidth;
659 // Fill unchanged dimensions
660 if(term->NewHeight == 0) term->NewHeight = term->Height;
661 if(term->NewWidth == 0) term->NewWidth = term->Width;
663 VT_int_ChangeMode(term, *iData, term->NewWidth, term->NewHeight);
664 // Clear unapplied dimensions
669 // Update the screen dimensions
670 if(Node->Inode == giVT_CurrentTerminal)
671 VT_SetTerminal( giVT_CurrentTerminal );
673 LEAVE('i', term->Mode);
676 // Get/set the terminal width
677 case TERM_IOCTL_WIDTH:
679 if( CheckMem(Data, sizeof(int)) == 0 ) {
683 term->NewWidth = *iData;
686 ret = term->NewWidth;
687 else if( term->Mode == TERM_MODE_TEXT )
688 ret = term->TextWidth;
694 // Get/set the terminal height
695 case TERM_IOCTL_HEIGHT:
697 if( CheckMem(Data, sizeof(int)) == 0 ) {
701 term->NewHeight = *iData;
703 if( term->NewHeight )
704 ret = term->NewHeight;
705 else if( term->Mode == TERM_MODE_TEXT )
706 ret = term->TextHeight;
712 case TERM_IOCTL_FORCESHOW:
713 Log_Log("VTerm", "Thread %i forced VTerm %i to be shown",
714 Threads_GetTID(), (int)Node->Inode);
715 VT_SetTerminal( Node->Inode );
719 case TERM_IOCTL_GETSETCURSOR:
722 tVideo_IOCtl_Pos *pos = Data;
723 if( !CheckMem(Data, sizeof(*pos)) ) {
729 if( term->Mode == TERM_MODE_TEXT )
731 if(term->Flags & VT_FLAG_ALTBUF)
732 term->AltWritePos = pos->x + pos->y * term->TextWidth;
734 term->WritePos = pos->x + pos->y * term->TextWidth + term->ViewPos;
735 VT_int_UpdateCursor(term, 0);
739 term->VideoCursorX = pos->x;
740 term->VideoCursorY = pos->y;
741 VT_int_UpdateCursor(term, 1);
744 ret = (term->Flags & VT_FLAG_ALTBUF) ? term->AltWritePos : term->WritePos-term->ViewPos;
748 case TERM_IOCTL_SETCURSORBITMAP: {
749 tVideo_IOCtl_Bitmap *bmp = Data;
752 free( term->VideoCursor );
753 term->VideoCursor = NULL;
758 // Sanity check bitmap
759 if( !CheckMem(bmp, sizeof(tVideo_IOCtl_Bitmap)) ) {
760 Log_Notice("VTerm", "%p in TERM_IOCTL_SETCURSORBITMAP invalid", bmp);
764 if( !CheckMem(bmp->Data, bmp->W*bmp->H*sizeof(Uint32)) ) {
765 Log_Notice("VTerm", "%p in TERM_IOCTL_SETCURSORBITMAP invalid", bmp);
770 // Reallocate if needed
771 if(term->VideoCursor)
773 if(bmp->W * bmp->H != term->VideoCursor->W * term->VideoCursor->H) {
774 free(term->VideoCursor);
775 term->VideoCursor = NULL;
778 if(!term->VideoCursor) {
779 term->VideoCursor = malloc(sizeof(tVideo_IOCtl_Pos) + bmp->W*bmp->H*sizeof(Uint32));
780 if(!term->VideoCursor) {
781 Log_Error("VTerm", "Unable to allocate memory for cursor");
787 memcpy(term->VideoCursor, bmp, sizeof(tVideo_IOCtl_Pos) + bmp->W*bmp->H*sizeof(Uint32));
789 Log_Debug("VTerm", "Set VT%i's cursor to %p %ix%i",
790 (int)term->Node.Inode, bmp, bmp->W, bmp->H);
792 if(gpVT_CurTerm == term)
793 VFS_IOCtl(giVT_OutputDevHandle, VIDEO_IOCTL_SETCURSORBITMAP, term->VideoCursor);
803 * \fn void VT_SetTerminal(int ID)
804 * \brief Set the current terminal
806 void VT_SetTerminal(int ID)
808 // Update current terminal ID
809 Log_Log("VTerm", "Changed terminal from %i to %i", giVT_CurrentTerminal, ID);
810 giVT_CurrentTerminal = ID;
811 gpVT_CurTerm = &gVT_Terminals[ID];
814 if( gpVT_CurTerm->Mode == TERM_MODE_TEXT )
816 VT_SetMode( VIDEO_BUFFMT_TEXT );
820 // Update the cursor image
821 if(gpVT_CurTerm->VideoCursor)
822 VFS_IOCtl(giVT_OutputDevHandle, VIDEO_IOCTL_SETCURSORBITMAP, gpVT_CurTerm->VideoCursor);
823 VT_SetMode( VIDEO_BUFFMT_FRAMEBUFFER );
827 VT_int_UpdateCursor(gpVT_CurTerm, 1);
829 VT_int_UpdateScreen( gpVT_CurTerm, 1 );
833 * \fn void VT_KBCallBack(Uint32 Codepoint)
834 * \brief Called on keyboard interrupt
835 * \param Codepoint Pseudo-UTF32 character
837 * Handles a key press and sends the key code to the user's buffer.
838 * If the code creates a kernel-magic sequence, it is not passed to the
839 * user and is handled in-kernel.
841 void VT_KBCallBack(Uint32 Codepoint)
843 tVTerm *term = gpVT_CurTerm;
845 // How the hell did we get a codepoint of zero?
846 if(Codepoint == 0) return;
849 if( Codepoint & 0x80000000 )
851 Codepoint &= 0x7FFFFFFF;
854 case KEY_LALT: gbVT_AltDown &= ~1; break;
855 case KEY_RALT: gbVT_AltDown &= ~2; break;
856 case KEY_LCTRL: gbVT_CtrlDown &= ~1; break;
857 case KEY_RCTRL: gbVT_CtrlDown &= ~2; break;
864 case KEY_LALT: gbVT_AltDown |= 1; break;
865 case KEY_RALT: gbVT_AltDown |= 2; break;
866 case KEY_LCTRL: gbVT_CtrlDown |= 1; break;
867 case KEY_RCTRL: gbVT_CtrlDown |= 2; break;
870 if(!gbVT_AltDown || !gbVT_CtrlDown)
874 case KEY_F1: VT_SetTerminal(0); return;
875 case KEY_F2: VT_SetTerminal(1); return;
876 case KEY_F3: VT_SetTerminal(2); return;
877 case KEY_F4: VT_SetTerminal(3); return;
878 case KEY_F5: VT_SetTerminal(4); return;
879 case KEY_F6: VT_SetTerminal(5); return;
880 case KEY_F7: VT_SetTerminal(6); return;
881 case KEY_F8: VT_SetTerminal(7); return;
882 case KEY_F9: VT_SetTerminal(8); return;
883 case KEY_F10: VT_SetTerminal(9); return;
884 case KEY_F11: VT_SetTerminal(10); return;
885 case KEY_F12: VT_SetTerminal(11); return;
888 if( gpVT_CurTerm->Flags & VT_FLAG_ALTBUF )
890 if( gpVT_CurTerm->ViewPos > gpVT_CurTerm->Width )
891 gpVT_CurTerm->ViewPos -= gpVT_CurTerm->Width;
893 gpVT_CurTerm->ViewPos = 0;
896 if( gpVT_CurTerm->Flags & VT_FLAG_ALTBUF )
898 if( gpVT_CurTerm->ViewPos < gpVT_CurTerm->Width*gpVT_CurTerm->Height*(giVT_Scrollback) )
899 gpVT_CurTerm->ViewPos += gpVT_CurTerm->Width;
901 gpVT_CurTerm->ViewPos = gpVT_CurTerm->Width*gpVT_CurTerm->Height*(giVT_Scrollback);
907 if(term->Mode == TERM_MODE_TEXT)
912 // Ignore Modifer Keys
913 if(Codepoint > KEY_MODIFIERS) return;
915 // Get UTF-8/ANSI Encoding
919 buf[0] = '\x1B'; buf[1] = '['; buf[2] = 'D';
923 buf[0] = '\x1B'; buf[1] = '['; buf[2] = 'C';
927 buf[0] = '\x1B'; buf[1] = '['; buf[2] = 'A';
931 buf[0] = '\x1B'; buf[1] = '['; buf[2] = 'B';
936 //buf[0] = '\x1B'; buf[1] = '['; buf[2] = '5'; // Some overline also
937 //len = 4; // Commented out until I'm sure
944 // Attempt to encode in UTF-8
946 len = WriteUTF8( buf, Codepoint );
948 Warning("Codepoint (%x) is unrepresentable in UTF-8", Codepoint);
954 // Unprintable / Don't Pass
959 // Handle meta characters
960 if( !(term->Flags & VT_FLAG_RAWIN) )
972 if( MAX_INPUT_CHARS8 - term->InputWrite >= len )
973 memcpy( &term->InputBuffer[term->InputWrite], buf, len );
975 memcpy( &term->InputBuffer[term->InputWrite], buf, MAX_INPUT_CHARS8 - term->InputWrite );
976 memcpy( &term->InputBuffer[0], buf, len - (MAX_INPUT_CHARS8 - term->InputWrite) );
978 // Roll the buffer over
979 term->InputWrite += len;
980 term->InputWrite %= MAX_INPUT_CHARS8;
981 if( (term->InputWrite - term->InputRead + MAX_INPUT_CHARS8)%MAX_INPUT_CHARS8 < len ) {
982 term->InputRead = term->InputWrite + 1;
983 term->InputRead %= MAX_INPUT_CHARS8;
988 // Encode the raw UTF-32 Key
989 Uint32 *raw_in = (void*)term->InputBuffer;
990 raw_in[ term->InputWrite ] = Codepoint;
992 term->InputWrite %= MAX_INPUT_CHARS32;
993 if(term->InputRead == term->InputWrite) {
995 term->InputRead %= MAX_INPUT_CHARS32;
999 VFS_MarkAvaliable(&term->Node, 1);
1003 * \fn void VT_int_ClearLine(tVTerm *Term, int Num)
1004 * \brief Clears a line in a virtual terminal
1006 void VT_int_ClearLine(tVTerm *Term, int Num)
1011 if( Num < 0 || Num >= Term->TextHeight * (giVT_Scrollback + 1) ) return ;
1013 cell = (Term->Flags & VT_FLAG_ALTBUF) ? Term->AltBuf : Term->Text;
1014 cell = &cell[ Num*Term->TextWidth ];
1016 for( i = Term->TextWidth; i--; )
1019 cell[ i ].Colour = Term->CurColour;
1024 * \fn int VT_int_ParseEscape(tVTerm *Term, char *Buffer)
1025 * \brief Parses a VT100 Escape code
1027 int VT_int_ParseEscape(tVTerm *Term, char *Buffer)
1030 int argc = 0, j = 1;
1032 int args[6] = {0,0,0,0};
1033 int bQuestionMark = 0;
1045 if( '0' <= c && c <= '9' )
1048 if(c == ';') c = Buffer[j++];
1049 while('0' <= c && c <= '9') {
1051 args[argc] += c-'0';
1059 if( ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z'))
1065 // DEC Private Mode Set
1067 if(argc != 1) break;
1071 VT_int_ToggleAltBuffer(Term, 1);
1076 if(argc != 1) break;
1080 VT_int_ToggleAltBuffer(Term, 0);
1085 Log_Warning("VTerm", "Unknown control sequence '\\x1B[?%c'", c);
1099 if(argc == 1) tmp *= args[0];
1100 if( Term->Flags & VT_FLAG_ALTBUF )
1102 if( (Term->AltWritePos + tmp) % Term->TextWidth == 0 ) {
1103 Term->AltWritePos -= Term->AltWritePos % Term->TextWidth;
1104 Term->AltWritePos += Term->TextWidth - 1;
1107 Term->AltWritePos += tmp;
1111 if( (Term->WritePos + tmp) % Term->TextWidth == 0 ) {
1112 Term->WritePos -= Term->WritePos % Term->TextWidth;
1113 Term->WritePos += Term->TextWidth - 1;
1116 Term->WritePos += tmp;
1124 case 0: // Erase below
1126 case 1: // Erase above
1128 case 2: // Erase all
1129 if( Term->Flags & VT_FLAG_ALTBUF )
1131 int i = Term->TextHeight;
1132 while( i-- ) VT_int_ClearLine(Term, i);
1133 Term->AltWritePos = 0;
1134 VT_int_UpdateScreen(Term, 1);
1138 int i = Term->TextHeight * (giVT_Scrollback + 1);
1139 while( i-- ) VT_int_ClearLine(Term, i);
1142 VT_int_UpdateScreen(Term, 1);
1152 case 0: // Erase to right
1153 if( Term->Flags & VT_FLAG_ALTBUF )
1156 max = Term->Width - Term->AltWritePos % Term->Width;
1157 for( i = 0; i < max; i ++ )
1158 Term->AltBuf[Term->AltWritePos+i].Ch = 0;
1163 max = Term->Width - Term->WritePos % Term->Width;
1164 for( i = 0; i < max; i ++ )
1165 Term->Text[Term->WritePos+i].Ch = 0;
1167 VT_int_UpdateScreen(Term, 0);
1169 case 1: // Erase to left
1170 if( Term->Flags & VT_FLAG_ALTBUF )
1172 int i = Term->AltWritePos % Term->Width;
1174 Term->AltBuf[Term->AltWritePos++].Ch = 0;
1178 int i = Term->WritePos % Term->Width;
1180 Term->Text[Term->WritePos++].Ch = 0;
1182 VT_int_UpdateScreen(Term, 0);
1184 case 2: // Erase all
1185 if( Term->Flags & VT_FLAG_ALTBUF )
1187 VT_int_ClearLine(Term, Term->AltWritePos / Term->Width);
1191 VT_int_ClearLine(Term, Term->WritePos / Term->Width);
1193 VT_int_UpdateScreen(Term, 0);
1198 // Set cursor position
1200 if( Term->Flags & VT_FLAG_ALTBUF )
1201 Term->AltWritePos = args[0] + args[1]*Term->TextWidth;
1203 Term->WritePos = args[0] + args[1]*Term->TextWidth;
1204 //Log_Debug("VTerm", "args = {%i, %i}", args[0], args[1]);
1207 // Scroll up `n` lines
1210 // Scroll down `n` lines
1212 if(argc == 1) tmp *= args[0];
1213 if( Term->Flags & VT_FLAG_ALTBUF )
1214 VT_int_ScrollText(Term, tmp);
1217 if(Term->ViewPos/Term->TextWidth + tmp < 0)
1219 if(Term->ViewPos/Term->TextWidth + tmp > Term->TextHeight * (giVT_Scrollback + 1))
1222 Term->ViewPos += Term->TextWidth*tmp;
1231 if( 0 <= args[argc] && args[argc] <= 8)
1235 case 0: Term->CurColour = DEFAULT_COLOUR; break; // Reset
1236 case 1: Term->CurColour |= 0x80000000; break; // Bright
1237 case 2: Term->CurColour &= ~0x80000000; break; // Dim
1240 // Foreground Colour
1241 else if(30 <= args[argc] && args[argc] <= 37) {
1242 Term->CurColour &= 0xF000FFFF;
1243 Term->CurColour |= (Uint32)caVT100Colours[ args[argc]-30+(Term->CurColour>>28) ] << 16;
1245 // Background Colour
1246 else if(40 <= args[argc] && args[argc] <= 47) {
1247 Term->CurColour &= 0xFFFF8000;
1248 Term->CurColour |= caVT100Colours[ args[argc]-40+((Term->CurColour>>12)&15) ];
1253 // Set scrolling region
1255 if( argc != 2 ) break;
1256 Term->ScrollTop = args[0];
1257 Term->ScrollHeight = args[1] - args[0];
1261 Log_Warning("VTerm", "Unknown control sequence '\\x1B[%c'", c);
1271 //Log_Debug("VTerm", "j = %i, Buffer = '%s'", j, Buffer);
1276 * \fn void VT_int_PutString(tVTerm *Term, Uint8 *Buffer, Uint Count)
1277 * \brief Print a string to the Virtual Terminal
1279 void VT_int_PutString(tVTerm *Term, Uint8 *Buffer, Uint Count)
1285 for( i = 0; i < Count; i++ )
1287 // Handle escape sequences
1288 if( Buffer[i] == 0x1B )
1291 i += VT_int_ParseEscape(Term, (char*)&Buffer[i]) - 1;
1295 // Fast check for non UTF-8
1296 if( Buffer[i] < 128 ) // Plain ASCII
1297 VT_int_PutChar(Term, Buffer[i]);
1299 i += ReadUTF8(&Buffer[i], &val) - 1;
1300 VT_int_PutChar(Term, val);
1304 VT_int_UpdateScreen( Term, 0 );
1308 * \fn void VT_int_PutChar(tVTerm *Term, Uint32 Ch)
1309 * \brief Write a single character to a VTerm
1311 void VT_int_PutChar(tVTerm *Term, Uint32 Ch)
1317 if(Term->Flags & VT_FLAG_ALTBUF) {
1318 buffer = Term->AltBuf;
1319 write_pos = Term->AltWritePos;
1322 buffer = Term->Text;
1323 write_pos = Term->WritePos;
1328 case '\0': return; // Ignore NULL byte
1330 VT_int_UpdateScreen( Term, 0 ); // Update the line before newlining
1331 write_pos += Term->TextWidth;
1333 write_pos -= write_pos % Term->TextWidth;
1336 case '\t': { int tmp = write_pos / Term->TextWidth;
1337 write_pos %= Term->TextWidth;
1339 buffer[ write_pos ].Ch = '\0';
1340 buffer[ write_pos ].Colour = Term->CurColour;
1342 } while(write_pos & 7);
1343 write_pos += tmp * Term->TextWidth;
1347 // Backspace is invalid at Offset 0
1348 if(write_pos == 0) break;
1352 if(buffer[ write_pos ].Ch != '\0') {
1353 buffer[ write_pos ].Ch = 0;
1354 buffer[ write_pos ].Colour = Term->CurColour;
1358 i = 7; // Limit it to 8
1360 buffer[ write_pos ].Ch = 0;
1361 buffer[ write_pos ].Colour = Term->CurColour;
1363 } while(write_pos && i-- && buffer[ write_pos ].Ch == '\0');
1364 if(buffer[ write_pos ].Ch != '\0')
1369 buffer[ write_pos ].Ch = Ch;
1370 buffer[ write_pos ].Colour = Term->CurColour;
1371 // Update the line before wrapping
1372 if( (write_pos + 1) % Term->TextWidth == 0 )
1373 VT_int_UpdateScreen( Term, 0 );
1378 if(Term->Flags & VT_FLAG_ALTBUF)
1380 Term->AltBuf = buffer;
1381 Term->AltWritePos = write_pos;
1383 if(Term->AltWritePos >= Term->TextWidth*Term->TextHeight)
1385 Term->AltWritePos -= Term->TextWidth;
1386 VT_int_ScrollText(Term, 1);
1392 Term->Text = buffer;
1393 Term->WritePos = write_pos;
1395 // - Check if we need to scroll the entire scrollback buffer
1396 if(Term->WritePos >= Term->TextWidth*Term->TextHeight*(giVT_Scrollback+1))
1400 // Update previous line
1401 Term->WritePos -= Term->TextWidth;
1402 VT_int_UpdateScreen( Term, 0 );
1404 // Update view position
1405 base = Term->TextWidth*Term->TextHeight*(giVT_Scrollback);
1406 if(Term->ViewPos < base)
1407 Term->ViewPos += Term->Width;
1408 if(Term->ViewPos > base)
1409 Term->ViewPos = base;
1411 VT_int_ScrollText(Term, 1);
1413 // Ok, so we only need to scroll the screen
1414 else if(Term->WritePos >= Term->ViewPos + Term->TextWidth*Term->TextHeight)
1416 // Update the last line
1417 Term->WritePos -= Term->TextWidth;
1418 VT_int_UpdateScreen( Term, 0 );
1419 Term->WritePos += Term->TextWidth;
1421 VT_int_ScrollText(Term, 1);
1423 Term->ViewPos += Term->TextWidth;
1430 void VT_int_ScrollText(tVTerm *Term, int Count)
1433 int height, init_write_pos;
1435 int scroll_top, scroll_height;
1437 // Get buffer pointer and attributes
1438 if( Term->Flags & VT_FLAG_ALTBUF )
1441 height = Term->TextHeight;
1442 init_write_pos = Term->AltWritePos;
1443 scroll_top = Term->ScrollTop;
1444 scroll_height = Term->ScrollHeight;
1449 height = Term->TextHeight*(giVT_Scrollback+1);
1450 init_write_pos = Term->WritePos;
1452 scroll_height = height;
1455 // Scroll text downwards
1461 if(Count > scroll_height) Count = scroll_height;
1462 base = Term->TextWidth*(scroll_top + scroll_height - Count);
1463 len = Term->TextWidth*(scroll_height - Count);
1465 // Scroll terminal cache
1467 &buf[Term->TextWidth*scroll_top],
1468 &buf[Term->TextWidth*(scroll_top+Count)],
1469 len*sizeof(tVT_Char)
1472 for( i = 0; i < Term->TextWidth*Count; i ++ )
1474 buf[ base + i ].Ch = 0;
1475 buf[ base + i ].Colour = Term->CurColour;
1479 VT_int_ScrollFramebuffer( Term, Count );
1480 if( Term->Flags & VT_FLAG_ALTBUF )
1481 Term->AltWritePos = base;
1483 Term->WritePos = Term->ViewPos + Term->TextWidth*(Term->TextHeight - Count);
1484 for( i = 0; i < Count; i ++ )
1486 VT_int_UpdateScreen( Term, 0 );
1487 if( Term->Flags & VT_FLAG_ALTBUF )
1488 Term->AltWritePos += Term->TextWidth;
1490 Term->WritePos += Term->TextWidth;
1496 if(Count > scroll_height) Count = scroll_height;
1498 len = Term->TextWidth*(scroll_height - Count);
1500 // Scroll terminal cache
1502 &buf[Term->TextWidth*(scroll_top+Count)],
1503 &buf[Term->TextWidth*scroll_top],
1504 len*sizeof(tVT_Char)
1506 // Clear preceding rows
1507 for( i = 0; i < Term->TextWidth*Count; i ++ )
1510 buf[ i ].Colour = Term->CurColour;
1513 VT_int_ScrollFramebuffer( Term, -Count );
1514 if( Term->Flags & VT_FLAG_ALTBUF )
1515 Term->AltWritePos = Term->TextWidth*scroll_top;
1517 Term->WritePos = Term->ViewPos;
1518 for( i = 0; i < Count; i ++ )
1520 VT_int_UpdateScreen( Term, 0 );
1521 if( Term->Flags & VT_FLAG_ALTBUF )
1522 Term->AltWritePos += Term->TextWidth;
1524 Term->WritePos += Term->TextWidth;
1528 if( Term->Flags & VT_FLAG_ALTBUF )
1529 Term->AltWritePos = init_write_pos;
1531 Term->WritePos = init_write_pos;
1535 * \fn void VT_int_ScrollFramebuffer( tVTerm *Term, int Count )
1536 * \note Scrolls the framebuffer down by \a Count text lines
1538 void VT_int_ScrollFramebuffer( tVTerm *Term, int Count )
1548 // Only update if this is the current terminal
1549 if( Term != gpVT_CurTerm ) return;
1551 if( Count > Term->ScrollHeight ) Count = Term->ScrollHeight;
1552 if( Count < -Term->ScrollHeight ) Count = -Term->ScrollHeight;
1554 // Switch to 2D Command Stream
1555 tmp = VIDEO_BUFFMT_2DSTREAM;
1556 VFS_IOCtl(giVT_OutputDevHandle, VIDEO_IOCTL_SETBUFFORMAT, &tmp);
1558 // BLIT to 0,0 from 0,giVT_CharHeight
1559 buf.Op = VIDEO_2DOP_BLIT;
1560 buf.SrcX = 0; buf.DstX = 0;
1561 // TODO: Don't assume character dimensions
1562 buf.W = Term->TextWidth * giVT_CharWidth;
1565 buf.SrcY = (Term->ScrollTop+Count) * giVT_CharHeight;
1566 buf.DstY = Term->ScrollTop * giVT_CharHeight;
1568 else // Scroll up, move text down
1571 buf.SrcY = Term->ScrollTop * giVT_CharHeight;
1572 buf.DstY = (Term->ScrollTop+Count) * giVT_CharHeight;
1574 buf.H = (Term->ScrollHeight-Count) * giVT_CharHeight;
1575 VFS_WriteAt(giVT_OutputDevHandle, 0, sizeof(buf), &buf);
1577 // Restore old mode (this function is only called during text mode)
1578 tmp = VIDEO_BUFFMT_TEXT;
1579 VFS_IOCtl(giVT_OutputDevHandle, VIDEO_IOCTL_SETBUFFORMAT, &tmp);
1582 void VT_int_UpdateCursor( tVTerm *Term, int bShow )
1584 tVideo_IOCtl_Pos csr_pos;
1586 if( Term != gpVT_CurTerm ) return ;
1593 else if( Term->Mode == TERM_MODE_TEXT )
1597 // if( !(Term->Flags & VT_FLAG_SHOWCSR)
1598 // && ( (Term->Flags & VT_FLAG_HIDECSR) || !Term->Node.ReadThreads)
1600 if( !Term->Text || Term->Flags & VT_FLAG_HIDECSR )
1607 if(Term->Flags & VT_FLAG_ALTBUF)
1608 offset = Term->AltWritePos;
1610 offset = Term->WritePos - Term->ViewPos;
1612 csr_pos.x = offset % Term->TextWidth;
1613 csr_pos.y = offset / Term->TextWidth;
1614 if( 0 > csr_pos.y || csr_pos.y >= Term->TextHeight )
1615 csr_pos.y = -1, csr_pos.x = -1;
1620 csr_pos.x = Term->VideoCursorX;
1621 csr_pos.y = Term->VideoCursorY;
1623 VFS_IOCtl(giVT_OutputDevHandle, VIDEO_IOCTL_SETCURSOR, &csr_pos);
1627 * \fn void VT_int_UpdateScreen( tVTerm *Term, int UpdateAll )
1628 * \brief Updates the video framebuffer
1630 void VT_int_UpdateScreen( tVTerm *Term, int UpdateAll )
1633 int view_pos, write_pos;
1634 // Only update if this is the current terminal
1635 if( Term != gpVT_CurTerm ) return;
1637 switch( Term->Mode )
1639 case TERM_MODE_TEXT:
1640 view_pos = (Term->Flags & VT_FLAG_ALTBUF) ? 0 : Term->ViewPos;
1641 write_pos = (Term->Flags & VT_FLAG_ALTBUF) ? Term->AltWritePos : Term->WritePos;
1642 buffer = (Term->Flags & VT_FLAG_ALTBUF) ? Term->AltBuf : Term->Text;
1643 // Re copy the entire screen?
1646 giVT_OutputDevHandle,
1648 Term->TextWidth*Term->TextHeight*sizeof(tVT_Char),
1652 // Only copy the current line
1654 int ofs = write_pos - write_pos % Term->TextWidth;
1656 giVT_OutputDevHandle,
1657 (ofs - view_pos)*sizeof(tVT_Char),
1658 Term->TextWidth*sizeof(tVT_Char),
1665 giVT_OutputDevHandle,
1667 Term->Width*Term->Height*sizeof(Uint32),
1673 VT_int_UpdateCursor(Term, 1);
1677 * \brief Update the screen mode
1678 * \param Term Terminal to update
1679 * \param NewMode New mode to set
1680 * \param NewWidth New framebuffer width
1681 * \param NewHeight New framebuffer height
1683 void VT_int_ChangeMode(tVTerm *Term, int NewMode, int NewWidth, int NewHeight)
1685 // TODO: Increase RealWidth/RealHeight when this happens
1686 if(NewWidth > giVT_RealWidth) NewWidth = giVT_RealWidth;
1687 if(NewHeight > giVT_RealHeight) NewHeight = giVT_RealHeight;
1689 Term->Mode = NewMode;
1691 if(NewWidth != Term->Width || NewHeight != Term->Height)
1693 int oldW = Term->Width;
1694 int oldTW = Term->TextWidth;
1695 int oldH = Term->Height;
1696 int oldTH = Term->TextHeight;
1697 tVT_Char *oldTBuf = Term->Text;
1698 Uint32 *oldFB = Term->Buffer;
1700 // Calculate new dimensions
1701 Term->Width = NewWidth;
1702 Term->Height = NewHeight;
1703 Term->TextWidth = NewWidth / giVT_CharWidth;
1704 Term->TextHeight = NewHeight / giVT_CharHeight;
1705 Term->ScrollHeight = Term->TextHeight - (oldTH - Term->ScrollHeight) - Term->ScrollTop;
1707 // Allocate new buffers
1709 Term->Text = calloc(
1710 Term->TextWidth * Term->TextHeight * (giVT_Scrollback+1),
1715 w = (oldTW > Term->TextWidth) ? Term->TextWidth : oldTW;
1716 h = (oldTH > Term->TextHeight) ? Term->TextHeight : oldTH;
1717 h *= giVT_Scrollback + 1;
1718 for( i = 0; i < h; i ++ )
1721 &Term->Text[i*Term->TextWidth],
1730 Term->AltBuf = realloc(
1732 Term->TextWidth * Term->TextHeight * sizeof(tVT_Char)
1736 Term->Buffer = calloc( Term->Width * Term->Height, sizeof(Uint32) );
1739 w = (oldW > Term->Width) ? Term->Width : oldW;
1740 h = (oldH > Term->Height) ? Term->Height : oldH;
1741 for( i = 0; i < h; i ++ )
1744 &Term->Buffer[i*Term->Width],
1755 case TERM_MODE_TEXT:
1756 Log_Log("VTerm", "Set VT %p to text mode (%ix%i)",
1757 Term, Term->TextWidth, Term->TextHeight);
1760 Log_Log("VTerm", "Set VT %p to framebuffer mode (%ix%i)",
1761 Term, Term->Width, Term->Height);
1763 //case TERM_MODE_2DACCEL:
1764 //case TERM_MODE_3DACCEL:
1772 void VT_int_ToggleAltBuffer(tVTerm *Term, int Enabled)
1775 Term->Flags |= VT_FLAG_ALTBUF;
1777 Term->Flags &= ~VT_FLAG_ALTBUF;
1778 VT_int_UpdateScreen(Term, 1);
1784 #define MONOSPACE_FONT 10816
1786 #if MONOSPACE_FONT == 10808 // 8x8
1787 # include "vterm_font_8x8.h"
1788 #elif MONOSPACE_FONT == 10816 // 8x16
1789 # include "vterm_font_8x16.h"
1792 // === PROTOTYPES ===
1793 Uint8 *VT_Font_GetChar(Uint32 Codepoint);
1796 int giVT_CharWidth = FONT_WIDTH;
1797 int giVT_CharHeight = FONT_HEIGHT;
1801 * \brief Render a font character
1803 void VT_Font_Render(Uint32 Codepoint, void *Buffer, int Depth, int Pitch, Uint32 BGC, Uint32 FGC)
1811 Uint8 *buf = Buffer;
1813 font = VT_Font_GetChar(Codepoint);
1815 for(y = 0; y < FONT_HEIGHT; y ++)
1817 for(x = 0; x < FONT_WIDTH; x ++)
1819 if(*font & (1 << (FONT_WIDTH-x-1)))
1824 buf = (void*)( (tVAddr)buf + Pitch );
1829 else if( Depth <= 16 )
1831 Uint16 *buf = Buffer;
1833 font = VT_Font_GetChar(Codepoint);
1835 for(y = 0; y < FONT_HEIGHT; y ++)
1837 for(x = 0; x < FONT_WIDTH; x ++)
1839 if(*font & (1 << (FONT_WIDTH-x-1)))
1844 buf = (void*)( (tVAddr)buf + Pitch );
1849 // - Special handling to not overwrite the next pixel
1850 //TODO: Endian issues here
1851 else if( Depth == 24 )
1853 Uint8 *buf = Buffer;
1854 Uint8 bg_r = (BGC >> 16) & 0xFF;
1855 Uint8 bg_g = (BGC >> 8) & 0xFF;
1856 Uint8 bg_b = (BGC >> 0) & 0xFF;
1857 Uint8 fg_r = (FGC >> 16) & 0xFF;
1858 Uint8 fg_g = (FGC >> 8) & 0xFF;
1859 Uint8 fg_b = (FGC >> 0) & 0xFF;
1861 font = VT_Font_GetChar(Codepoint);
1863 for(y = 0; y < FONT_HEIGHT; y ++)
1865 for(x = 0; x < FONT_WIDTH; x ++)
1869 if(*font & (1 << (FONT_WIDTH-x-1))) {
1870 r = fg_r; g = fg_g; b = fg_b;
1873 r = bg_r; g = bg_g; b = bg_b;
1879 buf = (void*)( (tVAddr)buf + Pitch );
1883 // 32-bpp colour (nice and easy)
1884 else if( Depth == 32 )
1886 Uint32 *buf = Buffer;
1888 font = VT_Font_GetChar(Codepoint);
1890 for(y = 0; y < FONT_HEIGHT; y ++)
1892 for(x = 0; x < FONT_WIDTH; x ++)
1894 if(*font & (1 << (FONT_WIDTH-x-1)))
1899 buf = (Uint32*)( (tVAddr)buf + Pitch );
1906 * \fn Uint32 VT_Colour12to24(Uint16 Col12)
1907 * \brief Converts a 12-bit colour into 24 bits
1909 Uint32 VT_Colour12to24(Uint16 Col12)
1914 ret = (tmp << 0) | (tmp << 4);
1915 tmp = (Col12 & 0xF0) >> 4;
1916 ret |= (tmp << 8) | (tmp << 12);
1917 tmp = (Col12 & 0xF00) >> 8;
1918 ret |= (tmp << 16) | (tmp << 20);
1922 * \brief Converts a 12-bit colour into 15 bits
1924 Uint16 VT_Colour12to15(Uint16 Col12)
1929 ret = (tmp << 1) | (tmp & 1);
1930 tmp = (Col12 & 0xF0) >> 4;
1931 ret |= ( (tmp << 1) | (tmp & 1) ) << 5;
1932 tmp = (Col12 & 0xF00) >> 8;
1933 ret |= ( (tmp << 1) | (tmp & 1) ) << 10;
1938 * \brief Converts a 12-bit colour into any other depth
1939 * \param Col12 12-bit source colour
1940 * \param Depth Desired bit deptj
1941 * \note Green then blue get the extra avaliable bits (16:5-6-5, 14:4-5-5)
1943 Uint32 VT_Colour12toN(Uint16 Col12, int Depth)
1947 int rSize, gSize, bSize;
1950 if( Depth == 24 ) return VT_Colour12to24(Col12);
1951 if( Depth == 15 ) return VT_Colour12to15(Col12);
1952 // - 32 is a special case, it's usually 24-bit colour with an unused byte
1953 if( Depth == 32 ) return VT_Colour12to24(Col12);
1956 if( Depth < 8 ) return 0;
1957 if( Depth > 32 ) return 0;
1960 g = (Col12 & 0xF0) >> 4;
1961 b = (Col12 & 0xF00) >> 8;
1963 rSize = gSize = bSize = Depth / 3;
1964 if( rSize + gSize + bSize < Depth ) // Depth % 3 == 1
1966 if( rSize + gSize + bSize < Depth ) // Depth % 3 == 2
1970 r <<= rSize - 4; g <<= gSize - 4; b <<= bSize - 4;
1971 // Fill with the lowest bit
1972 if( Col12 & 0x001 ) r |= (1 << (rSize - 4)) - 1;
1973 if( Col12 & 0x010 ) r |= (1 << (gSize - 4)) - 1;
1974 if( Col12 & 0x100 ) r |= (1 << (bSize - 4)) - 1;
1979 ret |= b << (rSize + gSize);
1985 * \fn Uint8 *VT_Font_GetChar(Uint32 Codepoint)
1986 * \brief Gets an index into the font array given a Unicode Codepoint
1987 * \note See http://en.wikipedia.org/wiki/CP437
1989 Uint8 *VT_Font_GetChar(Uint32 Codepoint)
1993 return &VTermFont[Codepoint*FONT_HEIGHT];
1996 case 0xC7: index = 128; break; // Ç
1997 case 0xFC: index = 129; break; // ü
1998 case 0xE9: index = 130; break; // é
1999 case 0xE2: index = 131; break; // â
2000 case 0xE4: index = 132; break; // ä
2001 case 0xE0: index = 133; break; // à
2002 case 0xE5: index = 134; break; // å
2003 case 0xE7: index = 135; break; // ç
2004 case 0xEA: index = 136; break; // ê
2005 case 0xEB: index = 137; break; // ë
2006 case 0xE8: index = 138; break; // è
2007 case 0xEF: index = 139; break; // ï
2008 case 0xEE: index = 140; break; // î
2009 case 0xEC: index = 141; break; // ì
2010 case 0xC4: index = 142; break; // Ä
2011 case 0xC5: index = 143; break; // Å
2014 return &VTermFont[index*FONT_HEIGHT];
2017 EXPORTAS(&giVT_CharWidth, giVT_CharWidth);
2018 EXPORTAS(&giVT_CharHeight, giVT_CharHeight);
2019 EXPORT(VT_Font_Render);
2020 EXPORT(VT_Colour12to24);