2 * Acess2 Virtual Terminal Driver
8 #include <tpl_drv_video.h>
9 #include <tpl_drv_keyboard.h>
10 #include <tpl_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 DEFAULT_INPUT "PS2Keyboard"
23 #define DEFAULT_WIDTH 640
24 #define DEFAULT_HEIGHT 480
25 #define DEFAULT_SCROLLBACK 2 // 2 Screens of text + current screen
26 #define DEFAULT_COLOUR (VT_COL_BLACK|(0xAAA<<16))
28 #define VT_FLAG_HIDECSR 0x01
29 #define VT_FLAG_ALTBUF 0x02 //!< Alternate screen buffer
30 #define VT_FLAG_RAWIN 0x04 //!< Don't handle ^Z/^C/^V
31 #define VT_FLAG_HASFB 0x10 //!< Set if the VTerm has requested the Framebuffer
34 VT_INMODE_TEXT8, // UTF-8 Text Mode (VT100/xterm Emulation)
35 VT_INMODE_TEXT32, // UTF-32 Text Mode (Acess Native)
41 int Mode; //!< Current Mode (see ::eTplTerminal_Modes)
42 int Flags; //!< Flags (see VT_FLAG_*)
44 short NewWidth; //!< Un-applied dimensions (Width)
45 short NewHeight; //!< Un-applied dimensions (Height)
46 short Width; //!< Virtual Width
47 short Height; //!< Virtual Height
48 short TextWidth; //!< Text Virtual Width
49 short TextHeight; //!< Text Virtual Height
51 Uint32 CurColour; //!< Current Text Colour
53 int ViewPos; //!< View Buffer Offset (Text Only)
54 int WritePos; //!< Write Buffer Offset (Text Only)
57 tVT_Char *AltBuf; //!< Alternate Screen Buffer
58 int AltWritePos; //!< Alternate write position
59 short ScrollTop; //!< Top of scrolling region (smallest)
60 short ScrollHeight; //!< Length of scrolling region
62 tMutex ReadingLock; //!< Lock the VTerm when a process is reading from it
63 tTID ReadingThread; //!< Owner of the lock
64 int InputRead; //!< Input buffer read position
65 int InputWrite; //!< Input buffer write position
66 char InputBuffer[MAX_INPUT_CHARS8];
67 // tSemaphore InputSemaphore;
71 char Name[2]; //!< Name of the terminal
76 extern void Debug_SetKTerminal(const char *File);
79 int VT_Install(char **Arguments);
80 void VT_InitOutput(void);
81 void VT_InitInput(void);
82 char *VT_ReadDir(tVFS_Node *Node, int Pos);
83 tVFS_Node *VT_FindDir(tVFS_Node *Node, const char *Name);
84 int VT_Root_IOCtl(tVFS_Node *Node, int Id, void *Data);
85 Uint64 VT_Read(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer);
86 Uint64 VT_Write(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer);
87 int VT_Terminal_IOCtl(tVFS_Node *Node, int Id, void *Data);
88 void VT_SetResolution(int Width, int Height);
89 void VT_SetMode(int Mode);
90 void VT_SetTerminal(int ID);
91 void VT_KBCallBack(Uint32 Codepoint);
92 void VT_int_PutString(tVTerm *Term, Uint8 *Buffer, Uint Count);
93 void VT_int_ClearLine(tVTerm *Term, int Num);
94 int VT_int_ParseEscape(tVTerm *Term, char *Buffer);
95 void VT_int_PutChar(tVTerm *Term, Uint32 Ch);
96 void VT_int_ScrollText(tVTerm *Term, int Count);
97 void VT_int_ScrollFramebuffer( tVTerm *Term, int Count );
98 void VT_int_UpdateScreen( tVTerm *Term, int UpdateAll );
99 void VT_int_ChangeMode(tVTerm *Term, int NewMode, int NewWidth, int NewHeight);
100 void VT_int_ToggleAltBuffer(tVTerm *Term, int Enabled);
103 const Uint16 caVT100Colours[] = {
104 // Black, Red, Green, Yellow, Blue, Purple, Cyan, Gray
105 // Same again, but bright
106 VT_COL_BLACK, 0x700, 0x070, 0x770, 0x007, 0x707, 0x077, 0xAAA,
107 VT_COL_GREY, 0xF00, 0x0F0, 0xFF0, 0x00F, 0xF0F, 0x0FF, VT_COL_WHITE
111 MODULE_DEFINE(0, VERSION, VTerm, VT_Install, NULL, DEFAULT_OUTPUT, DEFAULT_INPUT, NULL);
112 tDevFS_Driver gVT_DrvInfo = {
115 .Flags = VFS_FFLAG_DIRECTORY,
119 .ReadDir = VT_ReadDir,
120 .FindDir = VT_FindDir,
121 .IOCtl = VT_Root_IOCtl
125 tVTerm gVT_Terminals[NUM_VTS];
126 int giVT_CurrentTerminal = 0;
127 tVTerm *gpVT_CurTerm = &gVT_Terminals[0];
128 // --- Video State ---
129 short giVT_RealWidth = DEFAULT_WIDTH; //!< Screen Width
130 short giVT_RealHeight = DEFAULT_HEIGHT; //!< Screen Height
131 int giVT_Scrollback = DEFAULT_SCROLLBACK;
132 // --- Driver Handles ---
133 char *gsVT_OutputDevice = NULL;
134 char *gsVT_InputDevice = NULL;
135 int giVT_OutputDevHandle = -2;
136 int giVT_InputDevHandle = -2;
137 // --- Key States --- (Used for VT Switching/Magic Combos)
138 int gbVT_CtrlDown = 0;
139 int gbVT_AltDown = 0;
140 int gbVT_SysrqDown = 0;
144 * \fn int VT_Install(char **Arguments)
145 * \brief Installs the Virtual Terminal Driver
147 int VT_Install(char **Arguments)
156 for(args = Arguments; (arg = *args); args++ )
158 char data[strlen(arg)+1];
162 val = strchr(arg, '=');
165 data[ val - arg ] = '\0';
168 Log_Debug("VTerm", "Argument '%s'", arg);
170 if( strcmp(opt, "Video") == 0 ) {
171 if( !gsVT_OutputDevice && Modules_InitialiseBuiltin( val ) == 0 )
172 gsVT_OutputDevice = strdup(val);
174 else if( strcmp(opt, "Input") == 0 ) {
175 if( !gsVT_InputDevice && Modules_InitialiseBuiltin( val ) == 0 )
176 gsVT_InputDevice = strdup(val);
178 else if( strcmp(opt, "Width") == 0 ) {
179 giVT_RealWidth = atoi( val );
181 else if( strcmp(opt, "Height") == 0 ) {
182 giVT_RealHeight = atoi( val );
184 else if( strcmp(opt, "Scrollback") == 0 ) {
185 giVT_Scrollback = atoi( val );
191 if(!gsVT_OutputDevice) gsVT_OutputDevice = strdup(DEFAULT_OUTPUT);
192 if(!gsVT_InputDevice) gsVT_InputDevice = strdup(DEFAULT_INPUT);
197 tmp = malloc( 9 + strlen(gsVT_OutputDevice) + 1 );
198 strcpy(tmp, "/Devices/");
199 strcpy(&tmp[9], gsVT_OutputDevice);
200 gsVT_OutputDevice = tmp;
201 tmp = malloc( 9 + strlen(gsVT_InputDevice) + 1 );
202 strcpy(tmp, "/Devices/");
203 strcpy(&tmp[9], gsVT_InputDevice);
204 gsVT_InputDevice = tmp;
207 Log_Log("VTerm", "Using '%s' as output", gsVT_OutputDevice);
208 Log_Log("VTerm", "Using '%s' as input", gsVT_InputDevice);
211 for( i = 0; i < NUM_VTS; i++ )
213 gVT_Terminals[i].Mode = TERM_MODE_TEXT;
214 gVT_Terminals[i].Flags = 0;
215 gVT_Terminals[i].CurColour = DEFAULT_COLOUR;
216 gVT_Terminals[i].WritePos = 0;
217 gVT_Terminals[i].AltWritePos = 0;
218 gVT_Terminals[i].ViewPos = 0;
219 gVT_Terminals[i].ReadingThread = -1;
220 gVT_Terminals[i].ScrollHeight = 0;
223 VT_int_ChangeMode( &gVT_Terminals[i],
224 TERM_MODE_TEXT, giVT_RealWidth, giVT_RealHeight );
226 gVT_Terminals[i].Name[0] = '0'+i;
227 gVT_Terminals[i].Name[1] = '\0';
228 gVT_Terminals[i].Node.Inode = i;
229 gVT_Terminals[i].Node.ImplPtr = &gVT_Terminals[i];
230 gVT_Terminals[i].Node.NumACLs = 0; // Only root can open virtual terminals
232 gVT_Terminals[i].Node.Read = VT_Read;
233 gVT_Terminals[i].Node.Write = VT_Write;
234 gVT_Terminals[i].Node.IOCtl = VT_Terminal_IOCtl;
235 // Semaphore_Init(&gVT_Terminals[i].InputSemaphore, 0, MAX_INPUT_CHARS8, "VTerm", gVT_Terminals[i].Name);
239 DevFS_AddDevice( &gVT_DrvInfo );
244 // Set kernel output to VT0
245 Debug_SetKTerminal("/Devices/VTerm/0");
247 Log_Log("VTerm", "Returning %i", MODULE_ERR_OK);
248 return MODULE_ERR_OK;
252 * \fn void VT_InitOutput()
253 * \brief Initialise Video Output
257 giVT_OutputDevHandle = VFS_Open(gsVT_OutputDevice, VFS_OPENFLAG_WRITE);
258 if(giVT_OutputDevHandle == -1) {
259 Log_Warning("VTerm", "Oh F**k, I can't open the video device '%s'", gsVT_OutputDevice);
262 VT_SetResolution( giVT_RealWidth, giVT_RealHeight );
264 VT_SetMode( VIDEO_BUFFMT_TEXT );
268 * \fn void VT_InitInput()
269 * \brief Initialises the input
273 giVT_InputDevHandle = VFS_Open(gsVT_InputDevice, VFS_OPENFLAG_READ);
274 if(giVT_InputDevHandle == -1) {
275 Log_Warning("VTerm", "Can't open the input device '%s'", gsVT_InputDevice);
278 VFS_IOCtl(giVT_InputDevHandle, KB_IOCTL_SETCALLBACK, VT_KBCallBack);
282 * \brief Set the video resolution
283 * \param Width New screen width
284 * \param Height New screen height
286 void VT_SetResolution(int Width, int Height)
288 tVideo_IOCtl_Mode mode = {0};
292 // Create the video mode
294 mode.height = Height;
299 VFS_IOCtl( giVT_OutputDevHandle, VIDEO_IOCTL_FINDMODE, &mode );
301 if( Width != mode.width || Height != mode.height )
304 "Selected resolution (%ix%i is not supported) by the device, using (%ix%i)",
305 giVT_RealWidth, giVT_RealHeight,
306 mode.width, mode.height
309 VFS_IOCtl( giVT_OutputDevHandle, VIDEO_IOCTL_GETSETMODE, &tmp );
311 // Resize text terminals if needed
312 if( giVT_RealWidth != mode.width || giVT_RealHeight != mode.height )
314 int newBufSize = (giVT_RealWidth/giVT_CharWidth)
315 *(giVT_RealHeight/giVT_CharHeight)
316 *(giVT_Scrollback+1);
318 // Resize the text terminals
319 giVT_RealWidth = mode.width;
320 giVT_RealHeight = mode.height;
321 for( i = 0; i < NUM_VTS; i ++ )
323 if( gVT_Terminals[i].Mode != TERM_MODE_TEXT ) continue;
325 gVT_Terminals[i].TextWidth = giVT_RealWidth/giVT_CharWidth;
326 gVT_Terminals[i].TextHeight = giVT_RealHeight/giVT_CharHeight;
328 gVT_Terminals[i].Text = realloc(
329 gVT_Terminals[i].Text,
330 newBufSize*sizeof(tVT_Char)
337 * \brief Set video output buffer mode
339 void VT_SetMode(int Mode)
341 VFS_IOCtl( giVT_OutputDevHandle, VIDEO_IOCTL_SETBUFFORMAT, &Mode );
345 * \fn char *VT_ReadDir(tVFS_Node *Node, int Pos)
346 * \brief Read from the VTerm Directory
348 char *VT_ReadDir(tVFS_Node *Node, int Pos)
350 if(Pos < 0) return NULL;
351 if(Pos >= NUM_VTS) return NULL;
352 return strdup( gVT_Terminals[Pos].Name );
356 * \fn tVFS_Node *VT_FindDir(tVFS_Node *Node, const char *Name)
357 * \brief Find an item in the VTerm directory
358 * \param Node Root node
359 * \param Name Name (number) of the terminal
361 tVFS_Node *VT_FindDir(tVFS_Node *Node, const char *Name)
365 ENTER("pNode sName", Node, Name);
367 // Open the input and output files if needed
368 if(giVT_OutputDevHandle == -2) VT_InitOutput();
369 if(giVT_InputDevHandle == -2) VT_InitInput();
372 if(Name[0] < '0' || Name[0] > '9' || Name[1] != '\0') {
383 LEAVE('p', &gVT_Terminals[num].Node);
384 return &gVT_Terminals[num].Node;
388 * \fn int VT_Root_IOCtl(tVFS_Node *Node, int Id, void *Data)
389 * \brief Control the VTerm Driver
391 int VT_Root_IOCtl(tVFS_Node *Node, int Id, void *Data)
396 case DRV_IOCTL_TYPE: return DRV_TYPE_MISC;
397 case DRV_IOCTL_IDENT: memcpy(Data, "VT\0\0", 4); return 0;
398 case DRV_IOCTL_VERSION: return VERSION;
399 case DRV_IOCTL_LOOKUP: return 0;
401 case 4: // Get Video Driver
402 if(Data) strcpy(Data, gsVT_OutputDevice);
403 return strlen(gsVT_OutputDevice);
405 case 5: // Set Video Driver
406 if(!Data) return -EINVAL;
407 if(Threads_GetUID() != 0) return -EACCES;
411 // TODO: Check if the string used is a heap string
413 free(gsVT_OutputDevice);
415 gsVT_OutputDevice = malloc(len+1);
416 strcpy(gsVT_OutputDevice, Data);
418 VFS_Close(giVT_OutputDevHandle);
419 giVT_OutputDevHandle = -1;
428 * \brief Read from a virtual terminal
430 Uint64 VT_Read(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
434 tVTerm *term = &gVT_Terminals[ Node->Inode ];
435 Uint32 *codepoint_buf = Buffer;
436 Uint32 *codepoint_in;
438 Mutex_Acquire( &term->ReadingLock );
440 // Check current mode
445 VFS_SelectNode(Node, VFS_SELECT_READ, NULL, "VT_Read (UTF-8)");
447 avail = term->InputWrite - term->InputRead;
449 avail += MAX_INPUT_CHARS8;
450 if(avail > Length - pos)
451 avail = Length - pos;
455 ((char*)Buffer)[pos] = term->InputBuffer[term->InputRead];
458 term->InputRead %= MAX_INPUT_CHARS8;
465 VFS_SelectNode(Node, VFS_SELECT_READ, NULL, "VT_Read (UCS-4)");
467 avail = term->InputWrite - term->InputRead;
469 avail += MAX_INPUT_CHARS32;
470 if(avail > Length - pos)
471 avail = Length/4 - pos;
473 codepoint_in = (void*)term->InputBuffer;
474 codepoint_buf = Buffer;
478 codepoint_buf[pos] = codepoint_in[term->InputRead];
481 term->InputRead %= MAX_INPUT_CHARS32;
487 // Mark none avaliable if buffer empty
488 if( term->InputRead == term->InputWrite )
489 VFS_MarkAvaliable(&term->Node, 0);
491 term->ReadingThread = -1;
493 Mutex_Release( &term->ReadingLock );
499 * \fn Uint64 VT_Write(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
500 * \brief Write to a virtual terminal
502 Uint64 VT_Write(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
504 tVTerm *term = &gVT_Terminals[ Node->Inode ];
512 VT_int_PutString(term, Buffer, Length);
518 size = term->Width*term->Height*4;
519 if( Offset > size ) {
520 Log_Notice("VTerm", "VT_Write: Offset (0x%llx) > FBSize (0x%x)",
524 if( Offset + Length > size ) {
525 Log_Notice("VTerm", "VT_Write: Offset+Length (0x%llx) > FBSize (0x%x)",
526 Offset+Length, size);
527 Length = size - Offset;
530 // Copy to the local cache
531 memcpy( (void*)((Uint)term->Buffer + (Uint)Offset), Buffer, Length );
533 // Update screen if needed
534 if( Node->Inode == giVT_CurrentTerminal )
536 // Fill entire screen?
537 if( giVT_RealWidth > term->Width || giVT_RealHeight > term->Height )
539 // No? :( Well, just center it
541 x = Offset/4; y = x / term->Width; x %= term->Width;
542 w = Length/4+x; h = w / term->Width; w %= term->Width;
544 x += (giVT_RealWidth - term->Width) / 2;
545 y += (giVT_RealHeight - term->Height) / 2;
548 VFS_WriteAt( giVT_OutputDevHandle,
549 (x + y * giVT_RealWidth)*4,
553 Buffer = (void*)( (Uint)Buffer + term->Width*4 );
559 return VFS_WriteAt( giVT_OutputDevHandle, Offset, Length, Buffer );
562 // Just pass on (for now)
563 // TODO: Handle locally too to ensure no information is lost on
564 // VT Switch (and to isolate terminals from each other)
565 case TERM_MODE_2DACCEL:
566 //case TERM_MODE_3DACCEL:
567 if( Node->Inode == giVT_CurrentTerminal )
569 VFS_Write( giVT_OutputDevHandle, Length, Buffer );
578 * \fn int VT_Terminal_IOCtl(tVFS_Node *Node, int Id, void *Data)
579 * \brief Call an IO Control on a virtual terminal
581 int VT_Terminal_IOCtl(tVFS_Node *Node, int Id, void *Data)
585 tVTerm *term = Node->ImplPtr;
586 ENTER("pNode iId pData", Node, Id, Data);
588 if(Id >= DRV_IOCTL_LOOKUP) {
589 // Only root can fiddle with graphics modes
590 // TODO: Remove this and replace with user ownership
591 if( Threads_GetUID() != 0 ) return -1;
598 LEAVE('i', DRV_TYPE_TERMINAL);
599 return DRV_TYPE_TERMINAL;
600 case DRV_IOCTL_IDENT:
601 memcpy(Data, "VT\0\0", 4);
604 case DRV_IOCTL_VERSION:
607 case DRV_IOCTL_LOOKUP:
611 // Get/Set the mode (and apply any changes)
612 case TERM_IOCTL_MODETYPE:
615 if( CheckMem(Data, sizeof(int)) == 0 ) {
619 Log_Log("VTerm", "VTerm %i mode set to %i", (int)Node->Inode, *iData);
621 // Update mode if needed
622 if( term->Mode != *iData
626 // Adjust for text mode
627 if( *iData == TERM_MODE_TEXT ) {
628 term->NewHeight *= giVT_CharHeight;
629 term->NewWidth *= giVT_CharWidth;
631 // Fill unchanged dimensions
632 if(term->NewHeight == 0) term->NewHeight = term->Height;
633 if(term->NewWidth == 0) term->NewWidth = term->Width;
635 VT_int_ChangeMode(term, *iData, term->NewWidth, term->NewHeight);
636 // Clear unapplied dimensions
641 // Update the screen dimensions
642 if(Node->Inode == giVT_CurrentTerminal)
643 VT_SetTerminal( giVT_CurrentTerminal );
645 LEAVE('i', term->Mode);
648 // Get/set the terminal width
649 case TERM_IOCTL_WIDTH:
651 if( CheckMem(Data, sizeof(int)) == 0 ) {
655 term->NewWidth = *iData;
658 ret = term->NewWidth;
659 else if( term->Mode == TERM_MODE_TEXT )
660 ret = term->TextWidth;
666 // Get/set the terminal height
667 case TERM_IOCTL_HEIGHT:
669 if( CheckMem(Data, sizeof(int)) == 0 ) {
673 term->NewHeight = *iData;
675 if( term->NewHeight )
676 ret = term->NewHeight;
677 else if( term->Mode == TERM_MODE_TEXT )
678 ret = term->TextHeight;
684 case TERM_IOCTL_FORCESHOW:
685 Log_Log("VTerm", "Thread %i forced VTerm %i to be shown",
686 Threads_GetTID(), (int)Node->Inode);
687 VT_SetTerminal( Node->Inode );
691 case TERM_IOCTL_GETCURSOR:
692 ret = (term->Flags & VT_FLAG_ALTBUF) ? term->AltWritePos : term->WritePos-term->ViewPos;
701 * \fn void VT_SetTerminal(int ID)
702 * \brief Set the current terminal
704 void VT_SetTerminal(int ID)
706 // Update current terminal ID
707 Log_Log("VTerm", "Changed terminal from %i to %i", giVT_CurrentTerminal, ID);
708 giVT_CurrentTerminal = ID;
709 gpVT_CurTerm = &gVT_Terminals[ID];
712 if( gpVT_CurTerm->Mode == TERM_MODE_TEXT && !(gpVT_CurTerm->Flags & VT_FLAG_HIDECSR) )
714 tVideo_IOCtl_Pos pos;
715 int offset = (gpVT_CurTerm->Flags & VT_FLAG_ALTBUF) ? gpVT_CurTerm->AltWritePos : gpVT_CurTerm->WritePos - gpVT_CurTerm->ViewPos;
716 pos.x = offset % gpVT_CurTerm->TextWidth;
717 pos.y = offset / gpVT_CurTerm->TextWidth;
718 if( 0 <= pos.y && pos.y < gpVT_CurTerm->TextHeight )
719 VFS_IOCtl(giVT_OutputDevHandle, VIDEO_IOCTL_SETCURSOR, &pos);
722 if( gpVT_CurTerm->Mode == TERM_MODE_TEXT )
723 VT_SetMode( VIDEO_BUFFMT_TEXT );
725 VT_SetMode( VIDEO_BUFFMT_FRAMEBUFFER );
728 VT_int_UpdateScreen( &gVT_Terminals[ ID ], 1 );
732 * \fn void VT_KBCallBack(Uint32 Codepoint)
733 * \brief Called on keyboard interrupt
734 * \param Codepoint Pseudo-UTF32 character
736 * Handles a key press and sends the key code to the user's buffer.
737 * If the code creates a kernel-magic sequence, it is not passed to the
738 * user and is handled in-kernel.
740 void VT_KBCallBack(Uint32 Codepoint)
742 tVTerm *term = gpVT_CurTerm;
744 // How the hell did we get a codepoint of zero?
745 if(Codepoint == 0) return;
748 if( Codepoint & 0x80000000 )
750 Codepoint &= 0x7FFFFFFF;
753 case KEY_LALT: gbVT_AltDown &= ~1; break;
754 case KEY_RALT: gbVT_AltDown &= ~2; break;
755 case KEY_LCTRL: gbVT_CtrlDown &= ~1; break;
756 case KEY_RCTRL: gbVT_CtrlDown &= ~2; break;
763 case KEY_LALT: gbVT_AltDown |= 1; break;
764 case KEY_RALT: gbVT_AltDown |= 2; break;
765 case KEY_LCTRL: gbVT_CtrlDown |= 1; break;
766 case KEY_RCTRL: gbVT_CtrlDown |= 2; break;
769 if(!gbVT_AltDown || !gbVT_CtrlDown)
773 case KEY_F1: VT_SetTerminal(0); return;
774 case KEY_F2: VT_SetTerminal(1); return;
775 case KEY_F3: VT_SetTerminal(2); return;
776 case KEY_F4: VT_SetTerminal(3); return;
777 case KEY_F5: VT_SetTerminal(4); return;
778 case KEY_F6: VT_SetTerminal(5); return;
779 case KEY_F7: VT_SetTerminal(6); return;
780 case KEY_F8: VT_SetTerminal(7); return;
781 case KEY_F9: VT_SetTerminal(8); return;
782 case KEY_F10: VT_SetTerminal(9); return;
783 case KEY_F11: VT_SetTerminal(10); return;
784 case KEY_F12: VT_SetTerminal(11); return;
787 if( gpVT_CurTerm->Flags & VT_FLAG_ALTBUF )
789 if( gpVT_CurTerm->ViewPos > gpVT_CurTerm->Width )
790 gpVT_CurTerm->ViewPos -= gpVT_CurTerm->Width;
792 gpVT_CurTerm->ViewPos = 0;
795 if( gpVT_CurTerm->Flags & VT_FLAG_ALTBUF )
797 if( gpVT_CurTerm->ViewPos < gpVT_CurTerm->Width*gpVT_CurTerm->Height*(giVT_Scrollback-1) )
798 gpVT_CurTerm->ViewPos += gpVT_CurTerm->Width;
800 gpVT_CurTerm->ViewPos = gpVT_CurTerm->Width*gpVT_CurTerm->Height*(giVT_Scrollback-1);
806 if(term->Mode == TERM_MODE_TEXT)
811 // Ignore Modifer Keys
812 if(Codepoint > KEY_MODIFIERS) return;
814 // Get UTF-8/ANSI Encoding
818 buf[0] = '\x1B'; buf[1] = '['; buf[2] = 'D';
822 buf[0] = '\x1B'; buf[1] = '['; buf[2] = 'C';
826 buf[0] = '\x1B'; buf[1] = '['; buf[2] = 'A';
830 buf[0] = '\x1B'; buf[1] = '['; buf[2] = 'B';
835 //buf[0] = '\x1B'; buf[1] = '['; buf[2] = '5'; // Some overline also
836 //len = 4; // Commented out until I'm sure
843 // Attempt to encode in UTF-8
845 len = WriteUTF8( buf, Codepoint );
847 Warning("Codepoint (%x) is unrepresentable in UTF-8", Codepoint);
853 // Unprintable / Don't Pass
858 // Handle meta characters
859 if( !(term->Flags & VT_FLAG_RAWIN) )
871 if( MAX_INPUT_CHARS8 - term->InputWrite >= len )
872 memcpy( &term->InputBuffer[term->InputWrite], buf, len );
874 memcpy( &term->InputBuffer[term->InputWrite], buf, MAX_INPUT_CHARS8 - term->InputWrite );
875 memcpy( &term->InputBuffer[0], buf, len - (MAX_INPUT_CHARS8 - term->InputWrite) );
877 // Roll the buffer over
878 term->InputWrite += len;
879 term->InputWrite %= MAX_INPUT_CHARS8;
880 if( (term->InputWrite - term->InputRead + MAX_INPUT_CHARS8)%MAX_INPUT_CHARS8 < len ) {
881 term->InputRead = term->InputWrite + 1;
882 term->InputRead %= MAX_INPUT_CHARS8;
887 // Encode the raw UTF-32 Key
888 Uint32 *raw_in = (void*)term->InputBuffer;
889 raw_in[ term->InputWrite ] = Codepoint;
891 term->InputWrite %= MAX_INPUT_CHARS32;
892 if(term->InputRead == term->InputWrite) {
894 term->InputRead %= MAX_INPUT_CHARS32;
898 VFS_MarkAvaliable(&term->Node, 1);
900 // Wake up the thread waiting on us
901 //if( term->ReadingThread >= 0 ) {
902 // Threads_WakeTID(term->ReadingThread);
907 * \fn void VT_int_ClearLine(tVTerm *Term, int Num)
908 * \brief Clears a line in a virtual terminal
910 void VT_int_ClearLine(tVTerm *Term, int Num)
915 if( Num < 0 || Num >= Term->TextHeight * (giVT_Scrollback + 1) ) return ;
917 cell = (Term->Flags & VT_FLAG_ALTBUF) ? Term->AltBuf : Term->Text;
918 cell = &cell[ Num*Term->TextWidth ];
920 for( i = Term->TextWidth; i--; )
923 cell[ i ].Colour = Term->CurColour;
928 * \fn int VT_int_ParseEscape(tVTerm *Term, char *Buffer)
929 * \brief Parses a VT100 Escape code
931 int VT_int_ParseEscape(tVTerm *Term, char *Buffer)
936 int args[6] = {0,0,0,0};
937 int bQuestionMark = 0;
949 if( '0' <= c && c <= '9' )
952 if(c == ';') c = Buffer[j++];
953 while('0' <= c && c <= '9') {
963 if( ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z'))
969 // DEC Private Mode Set
975 VT_int_ToggleAltBuffer(Term, 1);
984 VT_int_ToggleAltBuffer(Term, 0);
989 Log_Warning("VTerm", "Unknown control sequence '\\x1B[?%c'", c);
1003 if(argc == 1) tmp *= args[0];
1004 if( Term->Flags & VT_FLAG_ALTBUF )
1006 if( (Term->AltWritePos + tmp) % Term->TextWidth == 0 ) {
1007 Term->AltWritePos -= Term->AltWritePos % Term->TextWidth;
1008 Term->AltWritePos += Term->TextWidth - 1;
1011 Term->AltWritePos += tmp;
1015 if( (Term->WritePos + tmp) % Term->TextWidth == 0 ) {
1016 Term->WritePos -= Term->WritePos % Term->TextWidth;
1017 Term->WritePos += Term->TextWidth - 1;
1020 Term->WritePos += tmp;
1028 case 0: // Erase below
1030 case 1: // Erase above
1032 case 2: // Erase all
1033 if( Term->Flags & VT_FLAG_ALTBUF )
1035 int i = Term->TextHeight;
1036 while( i-- ) VT_int_ClearLine(Term, i);
1037 Term->AltWritePos = 0;
1038 VT_int_UpdateScreen(Term, 1);
1042 int i = Term->TextHeight * (giVT_Scrollback + 1);
1043 while( i-- ) VT_int_ClearLine(Term, i);
1046 VT_int_UpdateScreen(Term, 1);
1056 case 0: // Erase to right
1057 if( Term->Flags & VT_FLAG_ALTBUF )
1060 max = Term->Width - Term->AltWritePos % Term->Width;
1061 for( i = 0; i < max; i ++ )
1062 Term->AltBuf[Term->AltWritePos+i].Ch = 0;
1067 max = Term->Width - Term->WritePos % Term->Width;
1068 for( i = 0; i < max; i ++ )
1069 Term->Text[Term->WritePos+i].Ch = 0;
1071 VT_int_UpdateScreen(Term, 0);
1073 case 1: // Erase to left
1074 if( Term->Flags & VT_FLAG_ALTBUF )
1076 int i = Term->AltWritePos % Term->Width;
1078 Term->AltBuf[Term->AltWritePos++].Ch = 0;
1082 int i = Term->WritePos % Term->Width;
1084 Term->Text[Term->WritePos++].Ch = 0;
1086 VT_int_UpdateScreen(Term, 0);
1088 case 2: // Erase all
1089 if( Term->Flags & VT_FLAG_ALTBUF )
1091 VT_int_ClearLine(Term, Term->AltWritePos / Term->Width);
1095 VT_int_ClearLine(Term, Term->WritePos / Term->Width);
1097 VT_int_UpdateScreen(Term, 0);
1102 // Set cursor position
1104 if( Term->Flags & VT_FLAG_ALTBUF )
1105 Term->AltWritePos = args[0] + args[1]*Term->TextWidth;
1107 Term->WritePos = args[0] + args[1]*Term->TextWidth;
1108 //Log_Debug("VTerm", "args = {%i, %i}", args[0], args[1]);
1111 // Scroll up `n` lines
1114 // Scroll down `n` lines
1116 if(argc == 1) tmp *= args[0];
1117 if( Term->Flags & VT_FLAG_ALTBUF )
1118 VT_int_ScrollText(Term, tmp);
1121 if(Term->ViewPos/Term->TextWidth + tmp < 0)
1123 if(Term->ViewPos/Term->TextWidth + tmp > Term->TextHeight * (giVT_Scrollback + 1))
1126 Term->ViewPos += Term->TextWidth*tmp;
1135 if( 0 <= args[argc] && args[argc] <= 8)
1139 case 0: Term->CurColour = DEFAULT_COLOUR; break; // Reset
1140 case 1: Term->CurColour |= 0x80000000; break; // Bright
1141 case 2: Term->CurColour &= ~0x80000000; break; // Dim
1144 // Foreground Colour
1145 else if(30 <= args[argc] && args[argc] <= 37) {
1146 Term->CurColour &= 0xF000FFFF;
1147 Term->CurColour |= (Uint32)caVT100Colours[ args[argc]-30+(Term->CurColour>>28) ] << 16;
1149 // Background Colour
1150 else if(40 <= args[argc] && args[argc] <= 47) {
1151 Term->CurColour &= 0xFFFF8000;
1152 Term->CurColour |= caVT100Colours[ args[argc]-40+((Term->CurColour>>12)&15) ];
1157 // Set scrolling region
1159 if( argc != 2 ) break;
1160 Term->ScrollTop = args[0];
1161 Term->ScrollHeight = args[1] - args[0];
1165 Log_Warning("VTerm", "Unknown control sequence '\\x1B[%c'", c);
1175 //Log_Debug("VTerm", "j = %i, Buffer = '%s'", j, Buffer);
1180 * \fn void VT_int_PutString(tVTerm *Term, Uint8 *Buffer, Uint Count)
1181 * \brief Print a string to the Virtual Terminal
1183 void VT_int_PutString(tVTerm *Term, Uint8 *Buffer, Uint Count)
1189 for( i = 0; i < Count; i++ )
1191 // Handle escape sequences
1192 if( Buffer[i] == 0x1B )
1195 i += VT_int_ParseEscape(Term, (char*)&Buffer[i]) - 1;
1199 // Fast check for non UTF-8
1200 if( Buffer[i] < 128 ) // Plain ASCII
1201 VT_int_PutChar(Term, Buffer[i]);
1203 i += ReadUTF8(&Buffer[i], &val) - 1;
1204 VT_int_PutChar(Term, val);
1208 VT_int_UpdateScreen( Term, 0 );
1211 if( Term == gpVT_CurTerm && !(Term->Flags & VT_FLAG_HIDECSR) )
1213 tVideo_IOCtl_Pos pos;
1214 int offset = (gpVT_CurTerm->Flags & VT_FLAG_ALTBUF) ? gpVT_CurTerm->AltWritePos : gpVT_CurTerm->WritePos - gpVT_CurTerm->ViewPos;
1215 pos.x = offset % gpVT_CurTerm->TextWidth;
1216 pos.y = offset / gpVT_CurTerm->TextWidth;
1217 if( 0 <= pos.y && pos.y < gpVT_CurTerm->TextHeight )
1218 VFS_IOCtl(giVT_OutputDevHandle, VIDEO_IOCTL_SETCURSOR, &pos);
1223 * \fn void VT_int_PutChar(tVTerm *Term, Uint32 Ch)
1224 * \brief Write a single character to a VTerm
1226 void VT_int_PutChar(tVTerm *Term, Uint32 Ch)
1232 if(Term->Flags & VT_FLAG_ALTBUF) {
1233 buffer = Term->AltBuf;
1234 write_pos = Term->AltWritePos;
1237 buffer = Term->Text;
1238 write_pos = Term->WritePos;
1243 case '\0': return; // Ignore NULL byte
1245 VT_int_UpdateScreen( Term, 0 ); // Update the line before newlining
1246 write_pos += Term->TextWidth;
1248 write_pos -= write_pos % Term->TextWidth;
1251 case '\t': { int tmp = write_pos / Term->TextWidth;
1252 write_pos %= Term->TextWidth;
1254 buffer[ write_pos ].Ch = '\0';
1255 buffer[ write_pos ].Colour = Term->CurColour;
1257 } while(write_pos & 7);
1258 write_pos += tmp * Term->TextWidth;
1262 // Backspace is invalid at Offset 0
1263 if(write_pos == 0) break;
1267 if(buffer[ write_pos ].Ch != '\0') {
1268 buffer[ write_pos ].Ch = 0;
1269 buffer[ write_pos ].Colour = Term->CurColour;
1273 i = 7; // Limit it to 8
1275 buffer[ write_pos ].Ch = 0;
1276 buffer[ write_pos ].Colour = Term->CurColour;
1278 } while(write_pos && i-- && buffer[ write_pos ].Ch == '\0');
1279 if(buffer[ write_pos ].Ch != '\0')
1284 buffer[ write_pos ].Ch = Ch;
1285 buffer[ write_pos ].Colour = Term->CurColour;
1286 // Update the line before wrapping
1287 if( (write_pos + 1) % Term->TextWidth == 0 )
1288 VT_int_UpdateScreen( Term, 0 );
1293 if(Term->Flags & VT_FLAG_ALTBUF)
1295 Term->AltBuf = buffer;
1296 Term->AltWritePos = write_pos;
1298 if(Term->AltWritePos >= Term->TextWidth*Term->TextHeight)
1300 Term->AltWritePos -= Term->TextWidth;
1301 VT_int_ScrollText(Term, 1);
1307 Term->Text = buffer;
1308 Term->WritePos = write_pos;
1310 // - Check if we need to scroll the entire scrollback buffer
1311 if(Term->WritePos >= Term->TextWidth*Term->TextHeight*(giVT_Scrollback+1))
1315 // Update previous line
1316 Term->WritePos -= Term->TextWidth;
1317 VT_int_UpdateScreen( Term, 0 );
1319 // Update view position
1320 base = Term->TextWidth*Term->TextHeight*(giVT_Scrollback);
1321 if(Term->ViewPos < base)
1322 Term->ViewPos += Term->Width;
1323 if(Term->ViewPos > base)
1324 Term->ViewPos = base;
1326 VT_int_ScrollText(Term, 1);
1328 // Ok, so we only need to scroll the screen
1329 else if(Term->WritePos >= Term->ViewPos + Term->TextWidth*Term->TextHeight)
1331 // Update the last line
1332 Term->WritePos -= Term->TextWidth;
1333 VT_int_UpdateScreen( Term, 0 );
1334 Term->WritePos += Term->TextWidth;
1336 VT_int_ScrollText(Term, 1);
1338 Term->ViewPos += Term->TextWidth;
1345 void VT_int_ScrollText(tVTerm *Term, int Count)
1348 int height, init_write_pos;
1351 if( Term->Flags & VT_FLAG_ALTBUF )
1354 height = Term->TextHeight;
1355 init_write_pos = Term->AltWritePos;
1360 height = Term->TextHeight*giVT_Scrollback;
1361 init_write_pos = Term->WritePos;
1367 if(Count > Term->ScrollHeight) Count = Term->ScrollHeight;
1368 base = Term->TextWidth*(Term->ScrollTop + Term->ScrollHeight - Count);
1369 len = Term->TextWidth*(Term->ScrollHeight - Count);
1371 // Scroll terminal cache
1373 &buf[Term->TextWidth*Term->ScrollTop],
1374 &buf[Term->TextWidth*(Term->ScrollTop+Count)],
1375 len*sizeof(tVT_Char)
1378 for( i = 0; i < Term->TextWidth*Count; i ++ )
1380 Term->AltBuf[ base + i ].Ch = 0;
1381 Term->AltBuf[ base + i ].Colour = Term->CurColour;
1385 VT_int_ScrollFramebuffer( Term, Count );
1386 if( Term->Flags & VT_FLAG_ALTBUF )
1387 Term->AltWritePos = Term->TextWidth*(Term->ScrollTop + Term->ScrollHeight - Count);
1389 Term->WritePos = Term->ViewPos + Term->TextWidth*(Term->ScrollTop + Term->ScrollHeight - Count);
1390 // Log_Debug("VTerm", "Term->WritePos = %i/%i = %i", Term->WritePos, Term->TextWidth, Term->WritePos/Term->TextWidth);
1391 for( i = 0; i < Count; i ++ )
1393 VT_int_UpdateScreen( Term, 0 );
1394 if( Term->Flags & VT_FLAG_ALTBUF )
1395 Term->AltWritePos += Term->TextWidth;
1397 Term->WritePos += Term->TextWidth;
1403 if(Count > Term->ScrollHeight) Count = Term->ScrollHeight;
1405 len = Term->TextWidth*(Term->ScrollHeight - Count);
1407 // Scroll terminal cache
1409 &buf[Term->TextWidth*(Term->ScrollTop+Count)],
1410 &buf[Term->TextWidth*Term->ScrollTop],
1411 len*sizeof(tVT_Char)
1413 // Clear preceding rows
1414 for( i = 0; i < Term->TextWidth*Count; i ++ )
1416 Term->AltBuf[ i ].Ch = 0;
1417 Term->AltBuf[ i ].Colour = Term->CurColour;
1420 VT_int_ScrollFramebuffer( Term, -Count );
1421 if( Term->Flags & VT_FLAG_ALTBUF )
1422 Term->AltWritePos = Term->TextWidth*Term->ScrollTop;
1424 Term->WritePos = Term->ViewPos + Term->TextWidth*Term->ScrollTop;
1425 for( i = 0; i < Count; i ++ )
1427 VT_int_UpdateScreen( Term, 0 );
1428 if( Term->Flags & VT_FLAG_ALTBUF )
1429 Term->AltWritePos += Term->TextWidth;
1431 Term->WritePos += Term->TextWidth;
1435 if( Term->Flags & VT_FLAG_ALTBUF )
1436 Term->AltWritePos = init_write_pos;
1438 Term->WritePos = init_write_pos;
1442 * \fn void VT_int_ScrollFramebuffer( tVTerm *Term, int Count )
1443 * \note Scrolls the framebuffer down by \a Count text lines
1445 void VT_int_ScrollFramebuffer( tVTerm *Term, int Count )
1455 // Only update if this is the current terminal
1456 if( Term != gpVT_CurTerm ) return;
1458 if( Count > Term->ScrollHeight ) Count = Term->ScrollHeight;
1459 if( Count < -Term->ScrollHeight ) Count = -Term->ScrollHeight;
1461 // Switch to 2D Command Stream
1462 tmp = VIDEO_BUFFMT_2DSTREAM;
1463 VFS_IOCtl(giVT_OutputDevHandle, VIDEO_IOCTL_SETBUFFORMAT, &tmp);
1465 // BLIT to 0,0 from 0,giVT_CharHeight
1466 buf.Op = VIDEO_2DOP_BLIT;
1467 buf.SrcX = 0; buf.DstX = 0;
1468 buf.W = Term->TextWidth * giVT_CharWidth;
1471 buf.SrcY = (Term->ScrollTop+Count) * giVT_CharHeight;
1472 buf.DstY = Term->ScrollTop * giVT_CharHeight;
1474 else // Scroll up, move text down
1477 buf.SrcY = Term->ScrollTop * giVT_CharHeight;
1478 buf.DstY = (Term->ScrollTop+Count) * giVT_CharHeight;
1480 buf.H = (Term->ScrollHeight-Count) * giVT_CharHeight;
1481 VFS_WriteAt(giVT_OutputDevHandle, 0, sizeof(buf), &buf);
1483 // Restore old mode (this function is only called during text mode)
1484 tmp = VIDEO_BUFFMT_TEXT;
1485 VFS_IOCtl(giVT_OutputDevHandle, VIDEO_IOCTL_SETBUFFORMAT, &tmp);
1489 * \fn void VT_int_UpdateScreen( tVTerm *Term, int UpdateAll )
1490 * \brief Updates the video framebuffer
1492 void VT_int_UpdateScreen( tVTerm *Term, int UpdateAll )
1495 int view_pos, write_pos;
1496 // Only update if this is the current terminal
1497 if( Term != gpVT_CurTerm ) return;
1499 switch( Term->Mode )
1501 case TERM_MODE_TEXT:
1502 view_pos = (Term->Flags & VT_FLAG_ALTBUF) ? 0 : Term->ViewPos;
1503 write_pos = (Term->Flags & VT_FLAG_ALTBUF) ? Term->AltWritePos : Term->WritePos;
1504 buffer = (Term->Flags & VT_FLAG_ALTBUF) ? Term->AltBuf : Term->Text;
1505 // Re copy the entire screen?
1508 giVT_OutputDevHandle,
1510 Term->TextWidth*Term->TextHeight*sizeof(tVT_Char),
1514 // Only copy the current line
1516 int ofs = write_pos - write_pos % Term->TextWidth;
1518 giVT_OutputDevHandle,
1519 (ofs - view_pos)*sizeof(tVT_Char),
1520 Term->TextWidth*sizeof(tVT_Char),
1527 giVT_OutputDevHandle,
1529 Term->Width*Term->Height*sizeof(Uint32),
1537 * \brief Update the screen mode
1538 * \param Term Terminal to update
1539 * \param NewMode New mode to set
1540 * \param NewWidth New framebuffer width
1541 * \param NewHeight New framebuffer height
1543 void VT_int_ChangeMode(tVTerm *Term, int NewMode, int NewWidth, int NewHeight)
1546 // TODO: Increase RealWidth/RealHeight when this happens
1547 if(NewWidth > giVT_RealWidth) NewWidth = giVT_RealWidth;
1548 if(NewHeight > giVT_RealHeight) NewHeight = giVT_RealHeight;
1550 Term->Mode = NewMode;
1552 if(NewWidth != Term->Width || NewHeight != Term->Height)
1554 int oldW = Term->Width;
1555 int oldTW = Term->TextWidth;
1556 int oldH = Term->Height;
1557 int oldTH = Term->TextHeight;
1558 tVT_Char *oldTBuf = Term->Text;
1559 Uint32 *oldFB = Term->Buffer;
1561 // Calculate new dimensions
1562 Term->Width = NewWidth;
1563 Term->Height = NewHeight;
1564 Term->TextWidth = NewWidth / giVT_CharWidth;
1565 Term->TextHeight = NewHeight / giVT_CharHeight;
1566 Term->ScrollHeight = Term->TextHeight - (oldTH - Term->ScrollHeight) - Term->ScrollTop;
1568 // Allocate new buffers
1570 Term->Text = calloc(
1571 Term->TextWidth * Term->TextHeight * (giVT_Scrollback+1),
1576 w = (oldTW > Term->TextWidth) ? Term->TextWidth : oldTW;
1577 h = (oldTH > Term->TextHeight) ? Term->TextHeight : oldTH;
1578 h *= giVT_Scrollback + 1;
1579 for( i = 0; i < h; i ++ )
1582 &Term->Text[i*Term->TextWidth],
1591 Term->AltBuf = realloc(
1593 Term->TextWidth * Term->TextHeight * sizeof(tVT_Char)
1597 Term->Buffer = calloc( Term->Width * Term->Height, sizeof(Uint32) );
1600 w = (oldW > Term->Width) ? Term->Width : oldW;
1601 h = (oldH > Term->Height) ? Term->Height : oldH;
1602 for( i = 0; i < h; i ++ )
1605 &Term->Buffer[i*Term->Width],
1618 case TERM_MODE_TEXT:
1619 Log_Log("VTerm", "Set VT %p to text mode (%ix%i)",
1620 Term, Term->TextWidth, Term->TextHeight);
1623 Log_Log("VTerm", "Set VT %p to framebuffer mode (%ix%i)",
1624 Term, Term->Width, Term->Height);
1626 //case TERM_MODE_2DACCEL:
1627 //case TERM_MODE_3DACCEL:
1633 void VT_int_ToggleAltBuffer(tVTerm *Term, int Enabled)
1636 Term->Flags |= VT_FLAG_ALTBUF;
1638 Term->Flags &= ~VT_FLAG_ALTBUF;
1639 VT_int_UpdateScreen(Term, 1);
1645 #define MONOSPACE_FONT 10816
1647 #if MONOSPACE_FONT == 10808 // 8x8
1648 # include "vterm_font_8x8.h"
1649 #elif MONOSPACE_FONT == 10816 // 8x16
1650 # include "vterm_font_8x16.h"
1653 // === PROTOTYPES ===
1654 Uint8 *VT_Font_GetChar(Uint32 Codepoint);
1657 int giVT_CharWidth = FONT_WIDTH;
1658 int giVT_CharHeight = FONT_HEIGHT;
1662 * \brief Render a font character
1664 void VT_Font_Render(Uint32 Codepoint, void *Buffer, int Depth, int Pitch, Uint32 BGC, Uint32 FGC)
1672 Uint8 *buf = Buffer;
1674 font = VT_Font_GetChar(Codepoint);
1676 for(y = 0; y < FONT_HEIGHT; y ++)
1678 for(x = 0; x < FONT_WIDTH; x ++)
1680 if(*font & (1 << (FONT_WIDTH-x-1)))
1685 buf = (void*)( (tVAddr)buf + Pitch );
1690 else if( Depth <= 16 )
1692 Uint16 *buf = Buffer;
1694 font = VT_Font_GetChar(Codepoint);
1696 for(y = 0; y < FONT_HEIGHT; y ++)
1698 for(x = 0; x < FONT_WIDTH; x ++)
1700 if(*font & (1 << (FONT_WIDTH-x-1)))
1705 buf = (void*)( (tVAddr)buf + Pitch );
1710 // - Special handling to not overwrite the next pixel
1711 //TODO: Endian issues here
1712 else if( Depth == 24 )
1714 Uint8 *buf = Buffer;
1715 Uint8 bg_r = (BGC >> 16) & 0xFF;
1716 Uint8 bg_g = (BGC >> 8) & 0xFF;
1717 Uint8 bg_b = (BGC >> 0) & 0xFF;
1718 Uint8 fg_r = (FGC >> 16) & 0xFF;
1719 Uint8 fg_g = (FGC >> 8) & 0xFF;
1720 Uint8 fg_b = (FGC >> 0) & 0xFF;
1722 font = VT_Font_GetChar(Codepoint);
1724 for(y = 0; y < FONT_HEIGHT; y ++)
1726 for(x = 0; x < FONT_WIDTH; x ++)
1730 if(*font & (1 << (FONT_WIDTH-x-1))) {
1731 r = fg_r; g = fg_g; b = fg_b;
1734 r = bg_r; g = bg_g; b = bg_b;
1740 buf = (void*)( (tVAddr)buf + Pitch );
1744 // 32-bpp colour (nice and easy)
1745 else if( Depth == 32 )
1747 Uint32 *buf = Buffer;
1749 font = VT_Font_GetChar(Codepoint);
1751 for(y = 0; y < FONT_HEIGHT; y ++)
1753 for(x = 0; x < FONT_WIDTH; x ++)
1755 if(*font & (1 << (FONT_WIDTH-x-1)))
1760 buf = (Uint32*)( (tVAddr)buf + Pitch );
1767 * \fn Uint32 VT_Colour12to24(Uint16 Col12)
1768 * \brief Converts a 12-bit colour into 24 bits
1770 Uint32 VT_Colour12to24(Uint16 Col12)
1775 ret = (tmp << 0) | (tmp << 4);
1776 tmp = (Col12 & 0xF0) >> 4;
1777 ret |= (tmp << 8) | (tmp << 12);
1778 tmp = (Col12 & 0xF00) >> 8;
1779 ret |= (tmp << 16) | (tmp << 20);
1783 * \brief Converts a 12-bit colour into 15 bits
1785 Uint16 VT_Colour12to15(Uint16 Col12)
1790 ret = (tmp << 1) | (tmp & 1);
1791 tmp = (Col12 & 0xF0) >> 4;
1792 ret |= ( (tmp << 1) | (tmp & 1) ) << 5;
1793 tmp = (Col12 & 0xF00) >> 8;
1794 ret |= ( (tmp << 1) | (tmp & 1) ) << 10;
1799 * \brief Converts a 12-bit colour into any other depth
1800 * \param Col12 12-bit source colour
1801 * \param Depth Desired bit deptj
1802 * \note Green then blue get the extra avaliable bits (16:5-6-5, 14:4-5-5)
1804 Uint32 VT_Colour12toN(Uint16 Col12, int Depth)
1808 int rSize, gSize, bSize;
1811 if( Depth == 24 ) return VT_Colour12to24(Col12);
1812 if( Depth == 15 ) return VT_Colour12to15(Col12);
1813 // - 32 is a special case, it's usually 24-bit colour with an unused byte
1814 if( Depth == 32 ) return VT_Colour12to24(Col12);
1817 if( Depth < 8 ) return 0;
1818 if( Depth > 32 ) return 0;
1821 g = (Col12 & 0xF0) >> 4;
1822 b = (Col12 & 0xF00) >> 8;
1824 rSize = gSize = bSize = Depth / 3;
1825 if( rSize + gSize + bSize < Depth ) // Depth % 3 == 1
1827 if( rSize + gSize + bSize < Depth ) // Depth % 3 == 2
1831 r <<= rSize - 4; g <<= gSize - 4; b <<= bSize - 4;
1832 // Fill with the lowest bit
1833 if( Col12 & 0x001 ) r |= (1 << (rSize - 4)) - 1;
1834 if( Col12 & 0x010 ) r |= (1 << (gSize - 4)) - 1;
1835 if( Col12 & 0x100 ) r |= (1 << (bSize - 4)) - 1;
1840 ret |= b << (rSize + gSize);
1846 * \fn Uint8 *VT_Font_GetChar(Uint32 Codepoint)
1847 * \brief Gets an index into the font array given a Unicode Codepoint
1848 * \note See http://en.wikipedia.org/wiki/CP437
1850 Uint8 *VT_Font_GetChar(Uint32 Codepoint)
1854 return &VTermFont[Codepoint*FONT_HEIGHT];
1857 case 0xC7: index = 128; break; // Ç
1858 case 0xFC: index = 129; break; // ü
1859 case 0xE9: index = 130; break; // é
1860 case 0xE2: index = 131; break; // â
1861 case 0xE4: index = 132; break; // ä
1862 case 0xE0: index = 133; break; // à
1863 case 0xE5: index = 134; break; // å
1864 case 0xE7: index = 135; break; // ç
1865 case 0xEA: index = 136; break; // ê
1866 case 0xEB: index = 137; break; // ë
1867 case 0xE8: index = 138; break; // è
1868 case 0xEF: index = 139; break; // ï
1869 case 0xEE: index = 140; break; // î
1870 case 0xEC: index = 141; break; // ì
1871 case 0xC4: index = 142; break; // Ä
1872 case 0xC5: index = 143; break; // Å
1875 return &VTermFont[index*FONT_HEIGHT];
1878 EXPORTAS(&giVT_CharWidth, giVT_CharWidth);
1879 EXPORTAS(&giVT_CharHeight, giVT_CharHeight);
1880 EXPORT(VT_Font_Render);
1881 EXPORT(VT_Colour12to24);