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_COLOUR (VT_COL_BLACK|(0xAAA<<16))
29 #define VT_FLAG_HIDECSR 0x01
30 #define VT_FLAG_ALTBUF 0x02 //!< Alternate screen buffer
31 #define VT_FLAG_RAWIN 0x04 //!< Don't handle ^Z/^C/^V
32 #define VT_FLAG_HASFB 0x10 //!< Set if the VTerm has requested the Framebuffer
35 VT_INMODE_TEXT8, // UTF-8 Text Mode (VT100/xterm Emulation)
36 VT_INMODE_TEXT32, // UTF-32 Text Mode (Acess Native)
42 int Mode; //!< Current Mode (see ::eTplTerminal_Modes)
43 int Flags; //!< Flags (see VT_FLAG_*)
45 short NewWidth; //!< Un-applied dimensions (Width)
46 short NewHeight; //!< Un-applied dimensions (Height)
47 short Width; //!< Virtual Width
48 short Height; //!< Virtual Height
49 short TextWidth; //!< Text Virtual Width
50 short TextHeight; //!< Text Virtual Height
52 Uint32 CurColour; //!< Current Text Colour
54 int ViewPos; //!< View Buffer Offset (Text Only)
55 int WritePos; //!< Write Buffer Offset (Text Only)
58 tVT_Char *AltBuf; //!< Alternate Screen Buffer
59 int AltWritePos; //!< Alternate write position
60 short ScrollTop; //!< Top of scrolling region (smallest)
61 short ScrollHeight; //!< Length of scrolling region
63 tMutex ReadingLock; //!< Lock the VTerm when a process is reading from it
64 tTID ReadingThread; //!< Owner of the lock
65 int InputRead; //!< Input buffer read position
66 int InputWrite; //!< Input buffer write position
67 char InputBuffer[MAX_INPUT_CHARS8];
68 // tSemaphore InputSemaphore;
72 char Name[2]; //!< Name of the terminal
77 extern void Debug_SetKTerminal(const char *File);
80 int VT_Install(char **Arguments);
81 void VT_InitOutput(void);
82 void VT_InitInput(void);
83 char *VT_ReadDir(tVFS_Node *Node, int Pos);
84 tVFS_Node *VT_FindDir(tVFS_Node *Node, const char *Name);
85 int VT_Root_IOCtl(tVFS_Node *Node, int Id, void *Data);
86 Uint64 VT_Read(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer);
87 Uint64 VT_Write(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer);
88 int VT_Terminal_IOCtl(tVFS_Node *Node, int Id, void *Data);
89 void VT_SetResolution(int Width, int Height);
90 void VT_SetMode(int Mode);
91 void VT_SetTerminal(int ID);
92 void VT_KBCallBack(Uint32 Codepoint);
93 void VT_int_PutString(tVTerm *Term, Uint8 *Buffer, Uint Count);
94 void VT_int_ClearLine(tVTerm *Term, int Num);
95 int VT_int_ParseEscape(tVTerm *Term, char *Buffer);
96 void VT_int_PutChar(tVTerm *Term, Uint32 Ch);
97 void VT_int_ScrollText(tVTerm *Term, int Count);
98 void VT_int_ScrollFramebuffer( tVTerm *Term, int Count );
99 void VT_int_UpdateScreen( tVTerm *Term, int UpdateAll );
100 void VT_int_ChangeMode(tVTerm *Term, int NewMode, int NewWidth, int NewHeight);
101 void VT_int_ToggleAltBuffer(tVTerm *Term, int Enabled);
104 const Uint16 caVT100Colours[] = {
105 // Black, Red, Green, Yellow, Blue, Purple, Cyan, Gray
106 // Same again, but bright
107 VT_COL_BLACK, 0x700, 0x070, 0x770, 0x007, 0x707, 0x077, 0xAAA,
108 VT_COL_GREY, 0xF00, 0x0F0, 0xFF0, 0x00F, 0xF0F, 0x0FF, VT_COL_WHITE
112 MODULE_DEFINE(0, VERSION, VTerm, VT_Install, NULL, DEFAULT_INPUT, FALLBACK_OUTPUT, NULL);
113 tDevFS_Driver gVT_DrvInfo = {
116 .Flags = VFS_FFLAG_DIRECTORY,
120 .ReadDir = VT_ReadDir,
121 .FindDir = VT_FindDir,
122 .IOCtl = VT_Root_IOCtl
126 tVTerm gVT_Terminals[NUM_VTS];
127 int giVT_CurrentTerminal = 0;
128 tVTerm *gpVT_CurTerm = &gVT_Terminals[0];
129 // --- Video State ---
130 short giVT_RealWidth = DEFAULT_WIDTH; //!< Screen Width
131 short giVT_RealHeight = DEFAULT_HEIGHT; //!< Screen Height
132 int giVT_Scrollback = DEFAULT_SCROLLBACK;
133 // --- Driver Handles ---
134 char *gsVT_OutputDevice = NULL;
135 char *gsVT_InputDevice = NULL;
136 int giVT_OutputDevHandle = -2;
137 int giVT_InputDevHandle = -2;
138 // --- Key States --- (Used for VT Switching/Magic Combos)
139 int gbVT_CtrlDown = 0;
140 int gbVT_AltDown = 0;
141 int gbVT_SysrqDown = 0;
145 * \fn int VT_Install(char **Arguments)
146 * \brief Installs the Virtual Terminal Driver
148 int VT_Install(char **Arguments)
157 for(args = Arguments; (arg = *args); args++ )
159 char data[strlen(arg)+1];
163 val = strchr(arg, '=');
166 data[ val - arg ] = '\0';
169 Log_Debug("VTerm", "Argument '%s'", arg);
171 if( strcmp(opt, "Video") == 0 ) {
172 if( !gsVT_OutputDevice )
173 gsVT_OutputDevice = strdup(val);
175 else if( strcmp(opt, "Input") == 0 ) {
176 if( !gsVT_InputDevice )
177 gsVT_InputDevice = strdup(val);
179 else if( strcmp(opt, "Width") == 0 ) {
180 giVT_RealWidth = atoi( val );
182 else if( strcmp(opt, "Height") == 0 ) {
183 giVT_RealHeight = atoi( val );
185 else if( strcmp(opt, "Scrollback") == 0 ) {
186 giVT_Scrollback = atoi( val );
192 if(!gsVT_OutputDevice) gsVT_OutputDevice = (char*)DEFAULT_OUTPUT;
193 else if( Module_EnsureLoaded( gsVT_OutputDevice ) ) gsVT_OutputDevice = (char*)DEFAULT_OUTPUT;
194 if( Module_EnsureLoaded( gsVT_OutputDevice ) ) gsVT_OutputDevice = (char*)FALLBACK_OUTPUT;
196 if(!gsVT_InputDevice) gsVT_InputDevice = (char*)DEFAULT_INPUT;
197 else if( Module_EnsureLoaded( gsVT_InputDevice ) ) gsVT_InputDevice = (char*)DEFAULT_INPUT;
199 // Create device paths
202 tmp = malloc( 9 + strlen(gsVT_OutputDevice) + 1 );
203 strcpy(tmp, "/Devices/");
204 strcpy(&tmp[9], gsVT_OutputDevice);
205 gsVT_OutputDevice = tmp;
207 tmp = malloc( 9 + strlen(gsVT_InputDevice) + 1 );
208 strcpy(tmp, "/Devices/");
209 strcpy(&tmp[9], gsVT_InputDevice);
210 gsVT_InputDevice = tmp;
213 Log_Log("VTerm", "Using '%s' as output", gsVT_OutputDevice);
214 Log_Log("VTerm", "Using '%s' as input", gsVT_InputDevice);
217 for( i = 0; i < NUM_VTS; i++ )
219 gVT_Terminals[i].Mode = TERM_MODE_TEXT;
220 gVT_Terminals[i].Flags = 0;
221 gVT_Terminals[i].CurColour = DEFAULT_COLOUR;
222 gVT_Terminals[i].WritePos = 0;
223 gVT_Terminals[i].AltWritePos = 0;
224 gVT_Terminals[i].ViewPos = 0;
225 gVT_Terminals[i].ReadingThread = -1;
226 gVT_Terminals[i].ScrollHeight = 0;
229 VT_int_ChangeMode( &gVT_Terminals[i],
230 TERM_MODE_TEXT, giVT_RealWidth, giVT_RealHeight );
232 gVT_Terminals[i].Name[0] = '0'+i;
233 gVT_Terminals[i].Name[1] = '\0';
234 gVT_Terminals[i].Node.Inode = i;
235 gVT_Terminals[i].Node.ImplPtr = &gVT_Terminals[i];
236 gVT_Terminals[i].Node.NumACLs = 0; // Only root can open virtual terminals
238 gVT_Terminals[i].Node.Read = VT_Read;
239 gVT_Terminals[i].Node.Write = VT_Write;
240 gVT_Terminals[i].Node.IOCtl = VT_Terminal_IOCtl;
241 // Semaphore_Init(&gVT_Terminals[i].InputSemaphore, 0, MAX_INPUT_CHARS8, "VTerm", gVT_Terminals[i].Name);
245 DevFS_AddDevice( &gVT_DrvInfo );
250 // Set kernel output to VT0
251 Debug_SetKTerminal("/Devices/VTerm/0");
253 return MODULE_ERR_OK;
257 * \fn void VT_InitOutput()
258 * \brief Initialise Video Output
262 giVT_OutputDevHandle = VFS_Open(gsVT_OutputDevice, VFS_OPENFLAG_WRITE);
263 if(giVT_OutputDevHandle == -1) {
264 Log_Warning("VTerm", "Oh F**k, I can't open the video device '%s'", gsVT_OutputDevice);
267 VT_SetResolution( giVT_RealWidth, giVT_RealHeight );
269 VT_SetMode( VIDEO_BUFFMT_TEXT );
273 * \fn void VT_InitInput()
274 * \brief Initialises the input
278 giVT_InputDevHandle = VFS_Open(gsVT_InputDevice, VFS_OPENFLAG_READ);
279 if(giVT_InputDevHandle == -1) {
280 Log_Warning("VTerm", "Can't open the input device '%s'", gsVT_InputDevice);
283 VFS_IOCtl(giVT_InputDevHandle, KB_IOCTL_SETCALLBACK, VT_KBCallBack);
287 * \brief Set the video resolution
288 * \param Width New screen width
289 * \param Height New screen height
291 void VT_SetResolution(int Width, int Height)
293 tVideo_IOCtl_Mode mode = {0};
297 // Create the video mode
299 mode.height = Height;
304 VFS_IOCtl( giVT_OutputDevHandle, VIDEO_IOCTL_FINDMODE, &mode );
306 if( Width != mode.width || Height != mode.height )
309 "Selected resolution (%ix%i is not supported) by the device, using (%ix%i)",
310 giVT_RealWidth, giVT_RealHeight,
311 mode.width, mode.height
314 VFS_IOCtl( giVT_OutputDevHandle, VIDEO_IOCTL_GETSETMODE, &tmp );
316 // Resize text terminals if needed
317 if( giVT_RealWidth != mode.width || giVT_RealHeight != mode.height )
319 int newBufSize = (giVT_RealWidth/giVT_CharWidth)
320 *(giVT_RealHeight/giVT_CharHeight)
321 *(giVT_Scrollback+1);
323 // Resize the text terminals
324 giVT_RealWidth = mode.width;
325 giVT_RealHeight = mode.height;
326 Log_Debug("VTerm", "Resizing terminals to %ix%i",
327 giVT_RealWidth/giVT_CharWidth, giVT_RealHeight/giVT_CharHeight);
328 for( i = 0; i < NUM_VTS; i ++ )
330 if( gVT_Terminals[i].Mode != TERM_MODE_TEXT ) continue;
332 gVT_Terminals[i].TextWidth = giVT_RealWidth/giVT_CharWidth;
333 gVT_Terminals[i].TextHeight = giVT_RealHeight/giVT_CharHeight;
334 gVT_Terminals[i].ScrollHeight = gVT_Terminals[i].TextHeight;
336 gVT_Terminals[i].Text = realloc(
337 gVT_Terminals[i].Text,
338 newBufSize*sizeof(tVT_Char)
345 * \brief Set video output buffer mode
347 void VT_SetMode(int Mode)
349 VFS_IOCtl( giVT_OutputDevHandle, VIDEO_IOCTL_SETBUFFORMAT, &Mode );
353 * \fn char *VT_ReadDir(tVFS_Node *Node, int Pos)
354 * \brief Read from the VTerm Directory
356 char *VT_ReadDir(tVFS_Node *Node, int Pos)
358 if(Pos < 0) return NULL;
359 if(Pos >= NUM_VTS) return NULL;
360 return strdup( gVT_Terminals[Pos].Name );
364 * \fn tVFS_Node *VT_FindDir(tVFS_Node *Node, const char *Name)
365 * \brief Find an item in the VTerm directory
366 * \param Node Root node
367 * \param Name Name (number) of the terminal
369 tVFS_Node *VT_FindDir(tVFS_Node *Node, const char *Name)
373 ENTER("pNode sName", Node, Name);
375 // Open the input and output files if needed
376 if(giVT_OutputDevHandle == -2) VT_InitOutput();
377 if(giVT_InputDevHandle == -2) VT_InitInput();
380 if(Name[0] < '0' || Name[0] > '9' || Name[1] != '\0') {
391 LEAVE('p', &gVT_Terminals[num].Node);
392 return &gVT_Terminals[num].Node;
396 * \fn int VT_Root_IOCtl(tVFS_Node *Node, int Id, void *Data)
397 * \brief Control the VTerm Driver
399 int VT_Root_IOCtl(tVFS_Node *Node, int Id, void *Data)
404 case DRV_IOCTL_TYPE: return DRV_TYPE_MISC;
405 case DRV_IOCTL_IDENT: memcpy(Data, "VT\0\0", 4); return 0;
406 case DRV_IOCTL_VERSION: return VERSION;
407 case DRV_IOCTL_LOOKUP: return 0;
409 case 4: // Get Video Driver
410 if(Data) strcpy(Data, gsVT_OutputDevice);
411 return strlen(gsVT_OutputDevice);
413 case 5: // Set Video Driver
414 if(!Data) return -EINVAL;
415 if(Threads_GetUID() != 0) return -EACCES;
419 // TODO: Check if the string used is a heap string
421 free(gsVT_OutputDevice);
423 gsVT_OutputDevice = malloc(len+1);
424 strcpy(gsVT_OutputDevice, Data);
426 VFS_Close(giVT_OutputDevHandle);
427 giVT_OutputDevHandle = -1;
436 * \brief Read from a virtual terminal
438 Uint64 VT_Read(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
442 tVTerm *term = &gVT_Terminals[ Node->Inode ];
443 Uint32 *codepoint_buf = Buffer;
444 Uint32 *codepoint_in;
446 Mutex_Acquire( &term->ReadingLock );
448 // Check current mode
453 VFS_SelectNode(Node, VFS_SELECT_READ, NULL, "VT_Read (UTF-8)");
455 avail = term->InputWrite - term->InputRead;
457 avail += MAX_INPUT_CHARS8;
458 if(avail > Length - pos)
459 avail = Length - pos;
463 ((char*)Buffer)[pos] = term->InputBuffer[term->InputRead];
466 term->InputRead %= MAX_INPUT_CHARS8;
473 VFS_SelectNode(Node, VFS_SELECT_READ, NULL, "VT_Read (UCS-4)");
475 avail = term->InputWrite - term->InputRead;
477 avail += MAX_INPUT_CHARS32;
478 if(avail > Length - pos)
479 avail = Length/4 - pos;
481 codepoint_in = (void*)term->InputBuffer;
482 codepoint_buf = Buffer;
486 codepoint_buf[pos] = codepoint_in[term->InputRead];
489 term->InputRead %= MAX_INPUT_CHARS32;
495 // Mark none avaliable if buffer empty
496 if( term->InputRead == term->InputWrite )
497 VFS_MarkAvaliable(&term->Node, 0);
499 term->ReadingThread = -1;
501 Mutex_Release( &term->ReadingLock );
507 * \fn Uint64 VT_Write(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
508 * \brief Write to a virtual terminal
510 Uint64 VT_Write(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
512 tVTerm *term = &gVT_Terminals[ Node->Inode ];
520 VT_int_PutString(term, Buffer, Length);
526 size = term->Width*term->Height*4;
527 if( Offset > size ) {
528 Log_Notice("VTerm", "VT_Write: Offset (0x%llx) > FBSize (0x%x)",
532 if( Offset + Length > size ) {
533 Log_Notice("VTerm", "VT_Write: Offset+Length (0x%llx) > FBSize (0x%x)",
534 Offset+Length, size);
535 Length = size - Offset;
538 // Copy to the local cache
539 memcpy( (void*)((Uint)term->Buffer + (Uint)Offset), Buffer, Length );
541 // Update screen if needed
542 if( Node->Inode == giVT_CurrentTerminal )
544 // Fill entire screen?
545 if( giVT_RealWidth > term->Width || giVT_RealHeight > term->Height )
547 // No? :( Well, just center it
549 x = Offset/4; y = x / term->Width; x %= term->Width;
550 w = Length/4+x; h = w / term->Width; w %= term->Width;
552 x += (giVT_RealWidth - term->Width) / 2;
553 y += (giVT_RealHeight - term->Height) / 2;
556 VFS_WriteAt( giVT_OutputDevHandle,
557 (x + y * giVT_RealWidth)*4,
561 Buffer = (void*)( (Uint)Buffer + term->Width*4 );
567 return VFS_WriteAt( giVT_OutputDevHandle, Offset, Length, Buffer );
570 // Just pass on (for now)
571 // TODO: Handle locally too to ensure no information is lost on
572 // VT Switch (and to isolate terminals from each other)
573 case TERM_MODE_2DACCEL:
574 //case TERM_MODE_3DACCEL:
575 if( Node->Inode == giVT_CurrentTerminal )
577 VFS_Write( giVT_OutputDevHandle, Length, Buffer );
586 * \fn int VT_Terminal_IOCtl(tVFS_Node *Node, int Id, void *Data)
587 * \brief Call an IO Control on a virtual terminal
589 int VT_Terminal_IOCtl(tVFS_Node *Node, int Id, void *Data)
593 tVTerm *term = Node->ImplPtr;
594 ENTER("pNode iId pData", Node, Id, Data);
596 if(Id >= DRV_IOCTL_LOOKUP) {
597 // Only root can fiddle with graphics modes
598 // TODO: Remove this and replace with user ownership
599 if( Threads_GetUID() != 0 ) return -1;
606 LEAVE('i', DRV_TYPE_TERMINAL);
607 return DRV_TYPE_TERMINAL;
608 case DRV_IOCTL_IDENT:
609 memcpy(Data, "VT\0\0", 4);
612 case DRV_IOCTL_VERSION:
615 case DRV_IOCTL_LOOKUP:
619 // Get/Set the mode (and apply any changes)
620 case TERM_IOCTL_MODETYPE:
623 if( CheckMem(Data, sizeof(int)) == 0 ) {
627 Log_Log("VTerm", "VTerm %i mode set to %i", (int)Node->Inode, *iData);
629 // Update mode if needed
630 if( term->Mode != *iData
634 // Adjust for text mode
635 if( *iData == TERM_MODE_TEXT ) {
636 term->NewHeight *= giVT_CharHeight;
637 term->NewWidth *= giVT_CharWidth;
639 // Fill unchanged dimensions
640 if(term->NewHeight == 0) term->NewHeight = term->Height;
641 if(term->NewWidth == 0) term->NewWidth = term->Width;
643 VT_int_ChangeMode(term, *iData, term->NewWidth, term->NewHeight);
644 // Clear unapplied dimensions
649 // Update the screen dimensions
650 if(Node->Inode == giVT_CurrentTerminal)
651 VT_SetTerminal( giVT_CurrentTerminal );
653 LEAVE('i', term->Mode);
656 // Get/set the terminal width
657 case TERM_IOCTL_WIDTH:
659 if( CheckMem(Data, sizeof(int)) == 0 ) {
663 term->NewWidth = *iData;
666 ret = term->NewWidth;
667 else if( term->Mode == TERM_MODE_TEXT )
668 ret = term->TextWidth;
674 // Get/set the terminal height
675 case TERM_IOCTL_HEIGHT:
677 if( CheckMem(Data, sizeof(int)) == 0 ) {
681 term->NewHeight = *iData;
683 if( term->NewHeight )
684 ret = term->NewHeight;
685 else if( term->Mode == TERM_MODE_TEXT )
686 ret = term->TextHeight;
692 case TERM_IOCTL_FORCESHOW:
693 Log_Log("VTerm", "Thread %i forced VTerm %i to be shown",
694 Threads_GetTID(), (int)Node->Inode);
695 VT_SetTerminal( Node->Inode );
699 case TERM_IOCTL_GETCURSOR:
700 ret = (term->Flags & VT_FLAG_ALTBUF) ? term->AltWritePos : term->WritePos-term->ViewPos;
709 * \fn void VT_SetTerminal(int ID)
710 * \brief Set the current terminal
712 void VT_SetTerminal(int ID)
714 // Update current terminal ID
715 Log_Log("VTerm", "Changed terminal from %i to %i", giVT_CurrentTerminal, ID);
716 giVT_CurrentTerminal = ID;
717 gpVT_CurTerm = &gVT_Terminals[ID];
720 if( gpVT_CurTerm->Mode == TERM_MODE_TEXT && !(gpVT_CurTerm->Flags & VT_FLAG_HIDECSR) )
722 tVideo_IOCtl_Pos pos;
723 int offset = (gpVT_CurTerm->Flags & VT_FLAG_ALTBUF) ? gpVT_CurTerm->AltWritePos : gpVT_CurTerm->WritePos - gpVT_CurTerm->ViewPos;
724 pos.x = offset % gpVT_CurTerm->TextWidth;
725 pos.y = offset / gpVT_CurTerm->TextWidth;
726 if( 0 <= pos.y && pos.y < gpVT_CurTerm->TextHeight )
727 VFS_IOCtl(giVT_OutputDevHandle, VIDEO_IOCTL_SETCURSOR, &pos);
730 if( gpVT_CurTerm->Mode == TERM_MODE_TEXT )
731 VT_SetMode( VIDEO_BUFFMT_TEXT );
733 VT_SetMode( VIDEO_BUFFMT_FRAMEBUFFER );
736 VT_int_UpdateScreen( &gVT_Terminals[ ID ], 1 );
740 * \fn void VT_KBCallBack(Uint32 Codepoint)
741 * \brief Called on keyboard interrupt
742 * \param Codepoint Pseudo-UTF32 character
744 * Handles a key press and sends the key code to the user's buffer.
745 * If the code creates a kernel-magic sequence, it is not passed to the
746 * user and is handled in-kernel.
748 void VT_KBCallBack(Uint32 Codepoint)
750 tVTerm *term = gpVT_CurTerm;
752 // How the hell did we get a codepoint of zero?
753 if(Codepoint == 0) return;
756 if( Codepoint & 0x80000000 )
758 Codepoint &= 0x7FFFFFFF;
761 case KEY_LALT: gbVT_AltDown &= ~1; break;
762 case KEY_RALT: gbVT_AltDown &= ~2; break;
763 case KEY_LCTRL: gbVT_CtrlDown &= ~1; break;
764 case KEY_RCTRL: gbVT_CtrlDown &= ~2; break;
771 case KEY_LALT: gbVT_AltDown |= 1; break;
772 case KEY_RALT: gbVT_AltDown |= 2; break;
773 case KEY_LCTRL: gbVT_CtrlDown |= 1; break;
774 case KEY_RCTRL: gbVT_CtrlDown |= 2; break;
777 if(!gbVT_AltDown || !gbVT_CtrlDown)
781 case KEY_F1: VT_SetTerminal(0); return;
782 case KEY_F2: VT_SetTerminal(1); return;
783 case KEY_F3: VT_SetTerminal(2); return;
784 case KEY_F4: VT_SetTerminal(3); return;
785 case KEY_F5: VT_SetTerminal(4); return;
786 case KEY_F6: VT_SetTerminal(5); return;
787 case KEY_F7: VT_SetTerminal(6); return;
788 case KEY_F8: VT_SetTerminal(7); return;
789 case KEY_F9: VT_SetTerminal(8); return;
790 case KEY_F10: VT_SetTerminal(9); return;
791 case KEY_F11: VT_SetTerminal(10); return;
792 case KEY_F12: VT_SetTerminal(11); return;
795 if( gpVT_CurTerm->Flags & VT_FLAG_ALTBUF )
797 if( gpVT_CurTerm->ViewPos > gpVT_CurTerm->Width )
798 gpVT_CurTerm->ViewPos -= gpVT_CurTerm->Width;
800 gpVT_CurTerm->ViewPos = 0;
803 if( gpVT_CurTerm->Flags & VT_FLAG_ALTBUF )
805 if( gpVT_CurTerm->ViewPos < gpVT_CurTerm->Width*gpVT_CurTerm->Height*(giVT_Scrollback-1) )
806 gpVT_CurTerm->ViewPos += gpVT_CurTerm->Width;
808 gpVT_CurTerm->ViewPos = gpVT_CurTerm->Width*gpVT_CurTerm->Height*(giVT_Scrollback-1);
814 if(term->Mode == TERM_MODE_TEXT)
819 // Ignore Modifer Keys
820 if(Codepoint > KEY_MODIFIERS) return;
822 // Get UTF-8/ANSI Encoding
826 buf[0] = '\x1B'; buf[1] = '['; buf[2] = 'D';
830 buf[0] = '\x1B'; buf[1] = '['; buf[2] = 'C';
834 buf[0] = '\x1B'; buf[1] = '['; buf[2] = 'A';
838 buf[0] = '\x1B'; buf[1] = '['; buf[2] = 'B';
843 //buf[0] = '\x1B'; buf[1] = '['; buf[2] = '5'; // Some overline also
844 //len = 4; // Commented out until I'm sure
851 // Attempt to encode in UTF-8
853 len = WriteUTF8( buf, Codepoint );
855 Warning("Codepoint (%x) is unrepresentable in UTF-8", Codepoint);
861 // Unprintable / Don't Pass
866 // Handle meta characters
867 if( !(term->Flags & VT_FLAG_RAWIN) )
879 if( MAX_INPUT_CHARS8 - term->InputWrite >= len )
880 memcpy( &term->InputBuffer[term->InputWrite], buf, len );
882 memcpy( &term->InputBuffer[term->InputWrite], buf, MAX_INPUT_CHARS8 - term->InputWrite );
883 memcpy( &term->InputBuffer[0], buf, len - (MAX_INPUT_CHARS8 - term->InputWrite) );
885 // Roll the buffer over
886 term->InputWrite += len;
887 term->InputWrite %= MAX_INPUT_CHARS8;
888 if( (term->InputWrite - term->InputRead + MAX_INPUT_CHARS8)%MAX_INPUT_CHARS8 < len ) {
889 term->InputRead = term->InputWrite + 1;
890 term->InputRead %= MAX_INPUT_CHARS8;
895 // Encode the raw UTF-32 Key
896 Uint32 *raw_in = (void*)term->InputBuffer;
897 raw_in[ term->InputWrite ] = Codepoint;
899 term->InputWrite %= MAX_INPUT_CHARS32;
900 if(term->InputRead == term->InputWrite) {
902 term->InputRead %= MAX_INPUT_CHARS32;
906 VFS_MarkAvaliable(&term->Node, 1);
908 // Wake up the thread waiting on us
909 //if( term->ReadingThread >= 0 ) {
910 // Threads_WakeTID(term->ReadingThread);
915 * \fn void VT_int_ClearLine(tVTerm *Term, int Num)
916 * \brief Clears a line in a virtual terminal
918 void VT_int_ClearLine(tVTerm *Term, int Num)
923 if( Num < 0 || Num >= Term->TextHeight * (giVT_Scrollback + 1) ) return ;
925 cell = (Term->Flags & VT_FLAG_ALTBUF) ? Term->AltBuf : Term->Text;
926 cell = &cell[ Num*Term->TextWidth ];
928 for( i = Term->TextWidth; i--; )
931 cell[ i ].Colour = Term->CurColour;
936 * \fn int VT_int_ParseEscape(tVTerm *Term, char *Buffer)
937 * \brief Parses a VT100 Escape code
939 int VT_int_ParseEscape(tVTerm *Term, char *Buffer)
944 int args[6] = {0,0,0,0};
945 int bQuestionMark = 0;
957 if( '0' <= c && c <= '9' )
960 if(c == ';') c = Buffer[j++];
961 while('0' <= c && c <= '9') {
971 if( ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z'))
977 // DEC Private Mode Set
983 VT_int_ToggleAltBuffer(Term, 1);
992 VT_int_ToggleAltBuffer(Term, 0);
997 Log_Warning("VTerm", "Unknown control sequence '\\x1B[?%c'", c);
1011 if(argc == 1) tmp *= args[0];
1012 if( Term->Flags & VT_FLAG_ALTBUF )
1014 if( (Term->AltWritePos + tmp) % Term->TextWidth == 0 ) {
1015 Term->AltWritePos -= Term->AltWritePos % Term->TextWidth;
1016 Term->AltWritePos += Term->TextWidth - 1;
1019 Term->AltWritePos += tmp;
1023 if( (Term->WritePos + tmp) % Term->TextWidth == 0 ) {
1024 Term->WritePos -= Term->WritePos % Term->TextWidth;
1025 Term->WritePos += Term->TextWidth - 1;
1028 Term->WritePos += tmp;
1036 case 0: // Erase below
1038 case 1: // Erase above
1040 case 2: // Erase all
1041 if( Term->Flags & VT_FLAG_ALTBUF )
1043 int i = Term->TextHeight;
1044 while( i-- ) VT_int_ClearLine(Term, i);
1045 Term->AltWritePos = 0;
1046 VT_int_UpdateScreen(Term, 1);
1050 int i = Term->TextHeight * (giVT_Scrollback + 1);
1051 while( i-- ) VT_int_ClearLine(Term, i);
1054 VT_int_UpdateScreen(Term, 1);
1064 case 0: // Erase to right
1065 if( Term->Flags & VT_FLAG_ALTBUF )
1068 max = Term->Width - Term->AltWritePos % Term->Width;
1069 for( i = 0; i < max; i ++ )
1070 Term->AltBuf[Term->AltWritePos+i].Ch = 0;
1075 max = Term->Width - Term->WritePos % Term->Width;
1076 for( i = 0; i < max; i ++ )
1077 Term->Text[Term->WritePos+i].Ch = 0;
1079 VT_int_UpdateScreen(Term, 0);
1081 case 1: // Erase to left
1082 if( Term->Flags & VT_FLAG_ALTBUF )
1084 int i = Term->AltWritePos % Term->Width;
1086 Term->AltBuf[Term->AltWritePos++].Ch = 0;
1090 int i = Term->WritePos % Term->Width;
1092 Term->Text[Term->WritePos++].Ch = 0;
1094 VT_int_UpdateScreen(Term, 0);
1096 case 2: // Erase all
1097 if( Term->Flags & VT_FLAG_ALTBUF )
1099 VT_int_ClearLine(Term, Term->AltWritePos / Term->Width);
1103 VT_int_ClearLine(Term, Term->WritePos / Term->Width);
1105 VT_int_UpdateScreen(Term, 0);
1110 // Set cursor position
1112 if( Term->Flags & VT_FLAG_ALTBUF )
1113 Term->AltWritePos = args[0] + args[1]*Term->TextWidth;
1115 Term->WritePos = args[0] + args[1]*Term->TextWidth;
1116 //Log_Debug("VTerm", "args = {%i, %i}", args[0], args[1]);
1119 // Scroll up `n` lines
1122 // Scroll down `n` lines
1124 if(argc == 1) tmp *= args[0];
1125 if( Term->Flags & VT_FLAG_ALTBUF )
1126 VT_int_ScrollText(Term, tmp);
1129 if(Term->ViewPos/Term->TextWidth + tmp < 0)
1131 if(Term->ViewPos/Term->TextWidth + tmp > Term->TextHeight * (giVT_Scrollback + 1))
1134 Term->ViewPos += Term->TextWidth*tmp;
1143 if( 0 <= args[argc] && args[argc] <= 8)
1147 case 0: Term->CurColour = DEFAULT_COLOUR; break; // Reset
1148 case 1: Term->CurColour |= 0x80000000; break; // Bright
1149 case 2: Term->CurColour &= ~0x80000000; break; // Dim
1152 // Foreground Colour
1153 else if(30 <= args[argc] && args[argc] <= 37) {
1154 Term->CurColour &= 0xF000FFFF;
1155 Term->CurColour |= (Uint32)caVT100Colours[ args[argc]-30+(Term->CurColour>>28) ] << 16;
1157 // Background Colour
1158 else if(40 <= args[argc] && args[argc] <= 47) {
1159 Term->CurColour &= 0xFFFF8000;
1160 Term->CurColour |= caVT100Colours[ args[argc]-40+((Term->CurColour>>12)&15) ];
1165 // Set scrolling region
1167 if( argc != 2 ) break;
1168 Term->ScrollTop = args[0];
1169 Term->ScrollHeight = args[1] - args[0];
1173 Log_Warning("VTerm", "Unknown control sequence '\\x1B[%c'", c);
1183 //Log_Debug("VTerm", "j = %i, Buffer = '%s'", j, Buffer);
1188 * \fn void VT_int_PutString(tVTerm *Term, Uint8 *Buffer, Uint Count)
1189 * \brief Print a string to the Virtual Terminal
1191 void VT_int_PutString(tVTerm *Term, Uint8 *Buffer, Uint Count)
1197 for( i = 0; i < Count; i++ )
1199 // Handle escape sequences
1200 if( Buffer[i] == 0x1B )
1203 i += VT_int_ParseEscape(Term, (char*)&Buffer[i]) - 1;
1207 // Fast check for non UTF-8
1208 if( Buffer[i] < 128 ) // Plain ASCII
1209 VT_int_PutChar(Term, Buffer[i]);
1211 i += ReadUTF8(&Buffer[i], &val) - 1;
1212 VT_int_PutChar(Term, val);
1216 VT_int_UpdateScreen( Term, 0 );
1219 if( Term == gpVT_CurTerm && !(Term->Flags & VT_FLAG_HIDECSR) )
1221 tVideo_IOCtl_Pos pos;
1222 int offset = (gpVT_CurTerm->Flags & VT_FLAG_ALTBUF) ? gpVT_CurTerm->AltWritePos : gpVT_CurTerm->WritePos - gpVT_CurTerm->ViewPos;
1223 pos.x = offset % gpVT_CurTerm->TextWidth;
1224 pos.y = offset / gpVT_CurTerm->TextWidth;
1225 if( 0 <= pos.y && pos.y < gpVT_CurTerm->TextHeight )
1226 VFS_IOCtl(giVT_OutputDevHandle, VIDEO_IOCTL_SETCURSOR, &pos);
1231 * \fn void VT_int_PutChar(tVTerm *Term, Uint32 Ch)
1232 * \brief Write a single character to a VTerm
1234 void VT_int_PutChar(tVTerm *Term, Uint32 Ch)
1240 if(Term->Flags & VT_FLAG_ALTBUF) {
1241 buffer = Term->AltBuf;
1242 write_pos = Term->AltWritePos;
1245 buffer = Term->Text;
1246 write_pos = Term->WritePos;
1251 case '\0': return; // Ignore NULL byte
1253 VT_int_UpdateScreen( Term, 0 ); // Update the line before newlining
1254 write_pos += Term->TextWidth;
1256 write_pos -= write_pos % Term->TextWidth;
1259 case '\t': { int tmp = write_pos / Term->TextWidth;
1260 write_pos %= Term->TextWidth;
1262 buffer[ write_pos ].Ch = '\0';
1263 buffer[ write_pos ].Colour = Term->CurColour;
1265 } while(write_pos & 7);
1266 write_pos += tmp * Term->TextWidth;
1270 // Backspace is invalid at Offset 0
1271 if(write_pos == 0) break;
1275 if(buffer[ write_pos ].Ch != '\0') {
1276 buffer[ write_pos ].Ch = 0;
1277 buffer[ write_pos ].Colour = Term->CurColour;
1281 i = 7; // Limit it to 8
1283 buffer[ write_pos ].Ch = 0;
1284 buffer[ write_pos ].Colour = Term->CurColour;
1286 } while(write_pos && i-- && buffer[ write_pos ].Ch == '\0');
1287 if(buffer[ write_pos ].Ch != '\0')
1292 buffer[ write_pos ].Ch = Ch;
1293 buffer[ write_pos ].Colour = Term->CurColour;
1294 // Update the line before wrapping
1295 if( (write_pos + 1) % Term->TextWidth == 0 )
1296 VT_int_UpdateScreen( Term, 0 );
1301 if(Term->Flags & VT_FLAG_ALTBUF)
1303 Term->AltBuf = buffer;
1304 Term->AltWritePos = write_pos;
1306 if(Term->AltWritePos >= Term->TextWidth*Term->TextHeight)
1308 Term->AltWritePos -= Term->TextWidth;
1309 VT_int_ScrollText(Term, 1);
1315 Term->Text = buffer;
1316 Term->WritePos = write_pos;
1318 // - Check if we need to scroll the entire scrollback buffer
1319 if(Term->WritePos >= Term->TextWidth*Term->TextHeight*(giVT_Scrollback+1))
1323 // Update previous line
1324 Term->WritePos -= Term->TextWidth;
1325 VT_int_UpdateScreen( Term, 0 );
1327 // Update view position
1328 base = Term->TextWidth*Term->TextHeight*(giVT_Scrollback);
1329 if(Term->ViewPos < base)
1330 Term->ViewPos += Term->Width;
1331 if(Term->ViewPos > base)
1332 Term->ViewPos = base;
1334 VT_int_ScrollText(Term, 1);
1336 // Ok, so we only need to scroll the screen
1337 else if(Term->WritePos >= Term->ViewPos + Term->TextWidth*Term->TextHeight)
1339 // Update the last line
1340 Term->WritePos -= Term->TextWidth;
1341 VT_int_UpdateScreen( Term, 0 );
1342 Term->WritePos += Term->TextWidth;
1344 VT_int_ScrollText(Term, 1);
1346 Term->ViewPos += Term->TextWidth;
1353 void VT_int_ScrollText(tVTerm *Term, int Count)
1356 int height, init_write_pos;
1358 int scroll_top, scroll_height;
1360 if( Term->Flags & VT_FLAG_ALTBUF )
1363 height = Term->TextHeight;
1364 init_write_pos = Term->AltWritePos;
1365 scroll_top = Term->ScrollTop;
1366 scroll_height = Term->ScrollHeight;
1371 height = Term->TextHeight*giVT_Scrollback;
1372 init_write_pos = Term->WritePos;
1374 scroll_height = height;
1380 if(Count > scroll_height) Count = scroll_height;
1381 // Debug("Scroll: Count = %i", Count);
1382 base = Term->TextWidth*(scroll_top + scroll_height - Count);
1383 len = Term->TextWidth*(scroll_height - Count);
1385 // Scroll terminal cache
1387 &buf[Term->TextWidth*scroll_top],
1388 &buf[Term->TextWidth*(scroll_top+Count)],
1389 len*sizeof(tVT_Char)
1392 for( i = 0; i < Term->TextWidth*Count; i ++ )
1394 buf[ base + i ].Ch = 0;
1395 buf[ base + i ].Colour = Term->CurColour;
1399 VT_int_ScrollFramebuffer( Term, Count );
1400 if( Term->Flags & VT_FLAG_ALTBUF )
1401 Term->AltWritePos = base;
1403 Term->WritePos = Term->ViewPos + Term->TextWidth*(Term->TextHeight - Count);
1404 for( i = 0; i < Count; i ++ )
1406 VT_int_UpdateScreen( Term, 0 );
1407 if( Term->Flags & VT_FLAG_ALTBUF )
1408 Term->AltWritePos += Term->TextWidth;
1410 Term->WritePos += Term->TextWidth;
1416 if(Count > scroll_height) Count = scroll_height;
1418 len = Term->TextWidth*(scroll_height - Count);
1420 // Scroll terminal cache
1422 &buf[Term->TextWidth*(scroll_top+Count)],
1423 &buf[Term->TextWidth*scroll_top],
1424 len*sizeof(tVT_Char)
1426 // Clear preceding rows
1427 for( i = 0; i < Term->TextWidth*Count; i ++ )
1430 buf[ i ].Colour = Term->CurColour;
1433 VT_int_ScrollFramebuffer( Term, -Count );
1434 if( Term->Flags & VT_FLAG_ALTBUF )
1435 Term->AltWritePos = Term->TextWidth*scroll_top;
1437 Term->WritePos = Term->ViewPos;
1438 for( i = 0; i < Count; i ++ )
1440 VT_int_UpdateScreen( Term, 0 );
1441 if( Term->Flags & VT_FLAG_ALTBUF )
1442 Term->AltWritePos += Term->TextWidth;
1444 Term->WritePos += Term->TextWidth;
1448 if( Term->Flags & VT_FLAG_ALTBUF )
1449 Term->AltWritePos = init_write_pos;
1451 Term->WritePos = init_write_pos;
1455 * \fn void VT_int_ScrollFramebuffer( tVTerm *Term, int Count )
1456 * \note Scrolls the framebuffer down by \a Count text lines
1458 void VT_int_ScrollFramebuffer( tVTerm *Term, int Count )
1468 // Only update if this is the current terminal
1469 if( Term != gpVT_CurTerm ) return;
1471 if( Count > Term->ScrollHeight ) Count = Term->ScrollHeight;
1472 if( Count < -Term->ScrollHeight ) Count = -Term->ScrollHeight;
1474 // Switch to 2D Command Stream
1475 tmp = VIDEO_BUFFMT_2DSTREAM;
1476 VFS_IOCtl(giVT_OutputDevHandle, VIDEO_IOCTL_SETBUFFORMAT, &tmp);
1478 // BLIT to 0,0 from 0,giVT_CharHeight
1479 buf.Op = VIDEO_2DOP_BLIT;
1480 buf.SrcX = 0; buf.DstX = 0;
1481 // TODO: Don't assume character dimensions
1482 buf.W = Term->TextWidth * giVT_CharWidth;
1485 buf.SrcY = (Term->ScrollTop+Count) * giVT_CharHeight;
1486 buf.DstY = Term->ScrollTop * giVT_CharHeight;
1488 else // Scroll up, move text down
1491 buf.SrcY = Term->ScrollTop * giVT_CharHeight;
1492 buf.DstY = (Term->ScrollTop+Count) * giVT_CharHeight;
1494 buf.H = (Term->ScrollHeight-Count) * giVT_CharHeight;
1495 VFS_WriteAt(giVT_OutputDevHandle, 0, sizeof(buf), &buf);
1497 // Restore old mode (this function is only called during text mode)
1498 tmp = VIDEO_BUFFMT_TEXT;
1499 VFS_IOCtl(giVT_OutputDevHandle, VIDEO_IOCTL_SETBUFFORMAT, &tmp);
1503 * \fn void VT_int_UpdateScreen( tVTerm *Term, int UpdateAll )
1504 * \brief Updates the video framebuffer
1506 void VT_int_UpdateScreen( tVTerm *Term, int UpdateAll )
1509 int view_pos, write_pos;
1510 // Only update if this is the current terminal
1511 if( Term != gpVT_CurTerm ) return;
1513 switch( Term->Mode )
1515 case TERM_MODE_TEXT:
1516 view_pos = (Term->Flags & VT_FLAG_ALTBUF) ? 0 : Term->ViewPos;
1517 write_pos = (Term->Flags & VT_FLAG_ALTBUF) ? Term->AltWritePos : Term->WritePos;
1518 buffer = (Term->Flags & VT_FLAG_ALTBUF) ? Term->AltBuf : Term->Text;
1519 // Re copy the entire screen?
1522 giVT_OutputDevHandle,
1524 Term->TextWidth*Term->TextHeight*sizeof(tVT_Char),
1528 // Only copy the current line
1530 int ofs = write_pos - write_pos % Term->TextWidth;
1532 giVT_OutputDevHandle,
1533 (ofs - view_pos)*sizeof(tVT_Char),
1534 Term->TextWidth*sizeof(tVT_Char),
1541 giVT_OutputDevHandle,
1543 Term->Width*Term->Height*sizeof(Uint32),
1551 * \brief Update the screen mode
1552 * \param Term Terminal to update
1553 * \param NewMode New mode to set
1554 * \param NewWidth New framebuffer width
1555 * \param NewHeight New framebuffer height
1557 void VT_int_ChangeMode(tVTerm *Term, int NewMode, int NewWidth, int NewHeight)
1560 // TODO: Increase RealWidth/RealHeight when this happens
1561 if(NewWidth > giVT_RealWidth) NewWidth = giVT_RealWidth;
1562 if(NewHeight > giVT_RealHeight) NewHeight = giVT_RealHeight;
1564 Term->Mode = NewMode;
1566 if(NewWidth != Term->Width || NewHeight != Term->Height)
1568 int oldW = Term->Width;
1569 int oldTW = Term->TextWidth;
1570 int oldH = Term->Height;
1571 int oldTH = Term->TextHeight;
1572 tVT_Char *oldTBuf = Term->Text;
1573 Uint32 *oldFB = Term->Buffer;
1575 // Calculate new dimensions
1576 Term->Width = NewWidth;
1577 Term->Height = NewHeight;
1578 Term->TextWidth = NewWidth / giVT_CharWidth;
1579 Term->TextHeight = NewHeight / giVT_CharHeight;
1580 Term->ScrollHeight = Term->TextHeight - (oldTH - Term->ScrollHeight) - Term->ScrollTop;
1582 // Allocate new buffers
1584 Term->Text = calloc(
1585 Term->TextWidth * Term->TextHeight * (giVT_Scrollback+1),
1590 w = (oldTW > Term->TextWidth) ? Term->TextWidth : oldTW;
1591 h = (oldTH > Term->TextHeight) ? Term->TextHeight : oldTH;
1592 h *= giVT_Scrollback + 1;
1593 for( i = 0; i < h; i ++ )
1596 &Term->Text[i*Term->TextWidth],
1605 Term->AltBuf = realloc(
1607 Term->TextWidth * Term->TextHeight * sizeof(tVT_Char)
1611 Term->Buffer = calloc( Term->Width * Term->Height, sizeof(Uint32) );
1614 w = (oldW > Term->Width) ? Term->Width : oldW;
1615 h = (oldH > Term->Height) ? Term->Height : oldH;
1616 for( i = 0; i < h; i ++ )
1619 &Term->Buffer[i*Term->Width],
1632 case TERM_MODE_TEXT:
1633 Log_Log("VTerm", "Set VT %p to text mode (%ix%i)",
1634 Term, Term->TextWidth, Term->TextHeight);
1637 Log_Log("VTerm", "Set VT %p to framebuffer mode (%ix%i)",
1638 Term, Term->Width, Term->Height);
1640 //case TERM_MODE_2DACCEL:
1641 //case TERM_MODE_3DACCEL:
1647 void VT_int_ToggleAltBuffer(tVTerm *Term, int Enabled)
1650 Term->Flags |= VT_FLAG_ALTBUF;
1652 Term->Flags &= ~VT_FLAG_ALTBUF;
1653 VT_int_UpdateScreen(Term, 1);
1659 #define MONOSPACE_FONT 10816
1661 #if MONOSPACE_FONT == 10808 // 8x8
1662 # include "vterm_font_8x8.h"
1663 #elif MONOSPACE_FONT == 10816 // 8x16
1664 # include "vterm_font_8x16.h"
1667 // === PROTOTYPES ===
1668 Uint8 *VT_Font_GetChar(Uint32 Codepoint);
1671 int giVT_CharWidth = FONT_WIDTH;
1672 int giVT_CharHeight = FONT_HEIGHT;
1676 * \brief Render a font character
1678 void VT_Font_Render(Uint32 Codepoint, void *Buffer, int Depth, int Pitch, Uint32 BGC, Uint32 FGC)
1686 Uint8 *buf = Buffer;
1688 font = VT_Font_GetChar(Codepoint);
1690 for(y = 0; y < FONT_HEIGHT; y ++)
1692 for(x = 0; x < FONT_WIDTH; x ++)
1694 if(*font & (1 << (FONT_WIDTH-x-1)))
1699 buf = (void*)( (tVAddr)buf + Pitch );
1704 else if( Depth <= 16 )
1706 Uint16 *buf = Buffer;
1708 font = VT_Font_GetChar(Codepoint);
1710 for(y = 0; y < FONT_HEIGHT; y ++)
1712 for(x = 0; x < FONT_WIDTH; x ++)
1714 if(*font & (1 << (FONT_WIDTH-x-1)))
1719 buf = (void*)( (tVAddr)buf + Pitch );
1724 // - Special handling to not overwrite the next pixel
1725 //TODO: Endian issues here
1726 else if( Depth == 24 )
1728 Uint8 *buf = Buffer;
1729 Uint8 bg_r = (BGC >> 16) & 0xFF;
1730 Uint8 bg_g = (BGC >> 8) & 0xFF;
1731 Uint8 bg_b = (BGC >> 0) & 0xFF;
1732 Uint8 fg_r = (FGC >> 16) & 0xFF;
1733 Uint8 fg_g = (FGC >> 8) & 0xFF;
1734 Uint8 fg_b = (FGC >> 0) & 0xFF;
1736 font = VT_Font_GetChar(Codepoint);
1738 for(y = 0; y < FONT_HEIGHT; y ++)
1740 for(x = 0; x < FONT_WIDTH; x ++)
1744 if(*font & (1 << (FONT_WIDTH-x-1))) {
1745 r = fg_r; g = fg_g; b = fg_b;
1748 r = bg_r; g = bg_g; b = bg_b;
1754 buf = (void*)( (tVAddr)buf + Pitch );
1758 // 32-bpp colour (nice and easy)
1759 else if( Depth == 32 )
1761 Uint32 *buf = Buffer;
1763 font = VT_Font_GetChar(Codepoint);
1765 for(y = 0; y < FONT_HEIGHT; y ++)
1767 for(x = 0; x < FONT_WIDTH; x ++)
1769 if(*font & (1 << (FONT_WIDTH-x-1)))
1774 buf = (Uint32*)( (tVAddr)buf + Pitch );
1781 * \fn Uint32 VT_Colour12to24(Uint16 Col12)
1782 * \brief Converts a 12-bit colour into 24 bits
1784 Uint32 VT_Colour12to24(Uint16 Col12)
1789 ret = (tmp << 0) | (tmp << 4);
1790 tmp = (Col12 & 0xF0) >> 4;
1791 ret |= (tmp << 8) | (tmp << 12);
1792 tmp = (Col12 & 0xF00) >> 8;
1793 ret |= (tmp << 16) | (tmp << 20);
1797 * \brief Converts a 12-bit colour into 15 bits
1799 Uint16 VT_Colour12to15(Uint16 Col12)
1804 ret = (tmp << 1) | (tmp & 1);
1805 tmp = (Col12 & 0xF0) >> 4;
1806 ret |= ( (tmp << 1) | (tmp & 1) ) << 5;
1807 tmp = (Col12 & 0xF00) >> 8;
1808 ret |= ( (tmp << 1) | (tmp & 1) ) << 10;
1813 * \brief Converts a 12-bit colour into any other depth
1814 * \param Col12 12-bit source colour
1815 * \param Depth Desired bit deptj
1816 * \note Green then blue get the extra avaliable bits (16:5-6-5, 14:4-5-5)
1818 Uint32 VT_Colour12toN(Uint16 Col12, int Depth)
1822 int rSize, gSize, bSize;
1825 if( Depth == 24 ) return VT_Colour12to24(Col12);
1826 if( Depth == 15 ) return VT_Colour12to15(Col12);
1827 // - 32 is a special case, it's usually 24-bit colour with an unused byte
1828 if( Depth == 32 ) return VT_Colour12to24(Col12);
1831 if( Depth < 8 ) return 0;
1832 if( Depth > 32 ) return 0;
1835 g = (Col12 & 0xF0) >> 4;
1836 b = (Col12 & 0xF00) >> 8;
1838 rSize = gSize = bSize = Depth / 3;
1839 if( rSize + gSize + bSize < Depth ) // Depth % 3 == 1
1841 if( rSize + gSize + bSize < Depth ) // Depth % 3 == 2
1845 r <<= rSize - 4; g <<= gSize - 4; b <<= bSize - 4;
1846 // Fill with the lowest bit
1847 if( Col12 & 0x001 ) r |= (1 << (rSize - 4)) - 1;
1848 if( Col12 & 0x010 ) r |= (1 << (gSize - 4)) - 1;
1849 if( Col12 & 0x100 ) r |= (1 << (bSize - 4)) - 1;
1854 ret |= b << (rSize + gSize);
1860 * \fn Uint8 *VT_Font_GetChar(Uint32 Codepoint)
1861 * \brief Gets an index into the font array given a Unicode Codepoint
1862 * \note See http://en.wikipedia.org/wiki/CP437
1864 Uint8 *VT_Font_GetChar(Uint32 Codepoint)
1868 return &VTermFont[Codepoint*FONT_HEIGHT];
1871 case 0xC7: index = 128; break; // Ç
1872 case 0xFC: index = 129; break; // ü
1873 case 0xE9: index = 130; break; // é
1874 case 0xE2: index = 131; break; // â
1875 case 0xE4: index = 132; break; // ä
1876 case 0xE0: index = 133; break; // à
1877 case 0xE5: index = 134; break; // å
1878 case 0xE7: index = 135; break; // ç
1879 case 0xEA: index = 136; break; // ê
1880 case 0xEB: index = 137; break; // ë
1881 case 0xE8: index = 138; break; // è
1882 case 0xEF: index = 139; break; // ï
1883 case 0xEE: index = 140; break; // î
1884 case 0xEC: index = 141; break; // ì
1885 case 0xC4: index = 142; break; // Ä
1886 case 0xC5: index = 143; break; // Å
1889 return &VTermFont[index*FONT_HEIGHT];
1892 EXPORTAS(&giVT_CharWidth, giVT_CharWidth);
1893 EXPORTAS(&giVT_CharHeight, giVT_CharHeight);
1894 EXPORT(VT_Font_Render);
1895 EXPORT(VT_Colour12to24);