+++ /dev/null
-/*
- * Acess2 Virtual Terminal Driver
- */
-#define DEBUG 0
-#include <acess.h>
-#include <fs_devfs.h>
-#include <modules.h>
-#include <tpl_drv_video.h>
-#include <tpl_drv_keyboard.h>
-#include <tpl_drv_terminal.h>
-#include <errno.h>
-#include <semaphore.h>
-
-#define USE_CTRL_ALT 0
-
-// === CONSTANTS ===
-#define VERSION ((0<<8)|(50))
-
-#define NUM_VTS 8
-#define MAX_INPUT_CHARS32 64
-#define MAX_INPUT_CHARS8 (MAX_INPUT_CHARS32*4)
-//#define DEFAULT_OUTPUT "BochsGA"
-#define DEFAULT_OUTPUT "Vesa"
-#define DEFAULT_INPUT "PS2Keyboard"
-#define DEFAULT_WIDTH 640
-#define DEFAULT_HEIGHT 480
-#define DEFAULT_SCROLLBACK 2 // 2 Screens of text + current screen
-#define DEFAULT_COLOUR (VT_COL_BLACK|(0xAAA<<16))
-
-#define VT_FLAG_HIDECSR 0x01
-#define VT_FLAG_HASFB 0x10 //!< Set if the VTerm has requested the Framebuffer
-
-enum eVT_InModes {
- VT_INMODE_TEXT8, // UTF-8 Text Mode (VT100/xterm Emulation)
- VT_INMODE_TEXT32, // UTF-32 Text Mode (Acess Native)
- NUM_VT_INMODES
-};
-
-// === TYPES ===
-typedef struct {
- int Mode; //!< Current Mode (see ::eTplTerminal_Modes)
- int Flags; //!< Flags (see VT_FLAG_*)
-
- short NewWidth; //!< Un-applied dimensions (Width)
- short NewHeight; //!< Un-applied dimensions (Height)
- short Width; //!< Virtual Width
- short Height; //!< Virtual Height
- short TextWidth; //!< Text Virtual Width
- short TextHeight; //!< Text Virtual Height
-
- int ViewPos; //!< View Buffer Offset (Text Only)
- int WritePos; //!< Write Buffer Offset (Text Only)
- Uint32 CurColour; //!< Current Text Colour
-
- tMutex ReadingLock; //!< Lock the VTerm when a process is reading from it
- tTID ReadingThread; //!< Owner of the lock
- int InputRead; //!< Input buffer read position
- int InputWrite; //!< Input buffer write position
- char InputBuffer[MAX_INPUT_CHARS8];
- tSemaphore InputSemaphore;
-
- tVT_Char *Text;
- Uint32 *Buffer;
-
- char Name[2]; //!< Name of the terminal
- tVFS_Node Node;
-} tVTerm;
-
-// === IMPORTS ===
-extern void Debug_SetKTerminal(const char *File);
-
-// === PROTOTYPES ===
- int VT_Install(char **Arguments);
-void VT_InitOutput(void);
-void VT_InitInput(void);
-char *VT_ReadDir(tVFS_Node *Node, int Pos);
-tVFS_Node *VT_FindDir(tVFS_Node *Node, const char *Name);
- int VT_Root_IOCtl(tVFS_Node *Node, int Id, void *Data);
-Uint64 VT_Read(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer);
-Uint64 VT_Write(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer);
- int VT_Terminal_IOCtl(tVFS_Node *Node, int Id, void *Data);
-void VT_SetResolution(int Width, int Height);
-void VT_SetMode(int Mode);
-void VT_SetTerminal(int ID);
-void VT_KBCallBack(Uint32 Codepoint);
-void VT_int_PutString(tVTerm *Term, Uint8 *Buffer, Uint Count);
-void VT_int_ClearLine(tVTerm *Term, int Num);
- int VT_int_ParseEscape(tVTerm *Term, char *Buffer);
-void VT_int_PutChar(tVTerm *Term, Uint32 Ch);
-void VT_int_ScrollFramebuffer( tVTerm *Term );
-void VT_int_UpdateScreen( tVTerm *Term, int UpdateAll );
-void VT_int_ChangeMode(tVTerm *Term, int NewMode, int NewWidth, int NewHeight);
-
-// === CONSTANTS ===
-const Uint16 caVT100Colours[] = {
- // Black, Red, Green, Yellow, Blue, Purple, Cyan, Gray
- // Same again, but bright
- VT_COL_BLACK, 0x700, 0x070, 0x770, 0x007, 0x707, 0x077, 0xAAA,
- VT_COL_GREY, 0xF00, 0x0F0, 0xFF0, 0x00F, 0xF0F, 0x0FF, VT_COL_WHITE
- };
-
-// === GLOBALS ===
-MODULE_DEFINE(0, VERSION, VTerm, VT_Install, NULL, DEFAULT_OUTPUT, DEFAULT_INPUT, NULL);
-tDevFS_Driver gVT_DrvInfo = {
- NULL, "VTerm",
- {
- .Flags = VFS_FFLAG_DIRECTORY,
- .Size = NUM_VTS,
- .Inode = -1,
- .NumACLs = 0,
- .ReadDir = VT_ReadDir,
- .FindDir = VT_FindDir,
- .IOCtl = VT_Root_IOCtl
- }
-};
-// --- Terminals ---
-tVTerm gVT_Terminals[NUM_VTS];
- int giVT_CurrentTerminal = 0;
-tVTerm *gpVT_CurTerm = &gVT_Terminals[0];
-// --- Video State ---
-short giVT_RealWidth = DEFAULT_WIDTH; //!< Screen Width
-short giVT_RealHeight = DEFAULT_HEIGHT; //!< Screen Height
- int giVT_Scrollback = DEFAULT_SCROLLBACK;
-// --- Driver Handles ---
-char *gsVT_OutputDevice = NULL;
-char *gsVT_InputDevice = NULL;
- int giVT_OutputDevHandle = -2;
- int giVT_InputDevHandle = -2;
-// --- Key States --- (Used for VT Switching/Magic Combos)
- int gbVT_CtrlDown = 0;
- int gbVT_AltDown = 0;
- int gbVT_SysrqDown = 0;
-
-// === CODE ===
-/**
- * \fn int VT_Install(char **Arguments)
- * \brief Installs the Virtual Terminal Driver
- */
-int VT_Install(char **Arguments)
-{
- int i;
-
- // Scan Arguments
- if(Arguments)
- {
- char **args;
- const char *arg;
- for(args = Arguments; (arg = *args); args++ )
- {
- char data[strlen(arg)+1];
- char *opt = data;
- char *val;
-
- val = strchr(arg, '=');
- strcpy(data, arg);
- if( val ) {
- data[ val - arg ] = '\0';
- val ++;
- }
- Log_Debug("VTerm", "Argument '%s'", arg);
-
- if( strcmp(opt, "Video") == 0 ) {
- gsVT_OutputDevice = strdup(val);
- }
- else if( strcmp(opt, "Input") == 0 ) {
- gsVT_InputDevice = strdup(val);
- }
- else if( strcmp(opt, "Width") == 0 ) {
- giVT_RealWidth = atoi( val );
- }
- else if( strcmp(opt, "Height") == 0 ) {
- giVT_RealHeight = atoi( val );
- }
- else if( strcmp(opt, "Scrollback") == 0 ) {
- giVT_Scrollback = atoi( val );
- }
- }
- }
-
- if(gsVT_OutputDevice) Modules_InitialiseBuiltin( gsVT_OutputDevice );
- if(gsVT_InputDevice) Modules_InitialiseBuiltin( gsVT_InputDevice );
-
- // Apply Defaults
- if(!gsVT_OutputDevice) gsVT_OutputDevice = strdup(DEFAULT_OUTPUT);
- if(!gsVT_InputDevice) gsVT_InputDevice = strdup(DEFAULT_INPUT);
-
- // Create paths
- {
- char *tmp;
- tmp = malloc( 9 + strlen(gsVT_OutputDevice) + 1 );
- strcpy(tmp, "/Devices/");
- strcpy(&tmp[9], gsVT_OutputDevice);
- gsVT_OutputDevice = tmp;
- tmp = malloc( 9 + strlen(gsVT_InputDevice) + 1 );
- strcpy(tmp, "/Devices/");
- strcpy(&tmp[9], gsVT_InputDevice);
- gsVT_InputDevice = tmp;
- }
-
- Log_Log("VTerm", "Using '%s' as output", gsVT_OutputDevice);
- Log_Log("VTerm", "Using '%s' as input", gsVT_InputDevice);
-
- // Create Nodes
- for( i = 0; i < NUM_VTS; i++ )
- {
- gVT_Terminals[i].Mode = TERM_MODE_TEXT;
- gVT_Terminals[i].Flags = 0;
- gVT_Terminals[i].CurColour = DEFAULT_COLOUR;
- gVT_Terminals[i].WritePos = 0;
- gVT_Terminals[i].ViewPos = 0;
- gVT_Terminals[i].ReadingThread = -1;
-
- // Initialise
- VT_int_ChangeMode( &gVT_Terminals[i],
- TERM_MODE_TEXT, giVT_RealWidth, giVT_RealHeight );
-
- gVT_Terminals[i].Name[0] = '0'+i;
- gVT_Terminals[i].Name[1] = '\0';
- gVT_Terminals[i].Node.Inode = i;
- gVT_Terminals[i].Node.ImplPtr = &gVT_Terminals[i];
- gVT_Terminals[i].Node.NumACLs = 0; // Only root can open virtual terminals
-
- gVT_Terminals[i].Node.Read = VT_Read;
- gVT_Terminals[i].Node.Write = VT_Write;
- gVT_Terminals[i].Node.IOCtl = VT_Terminal_IOCtl;
- Semaphore_Init(&gVT_Terminals[i].InputSemaphore, 0, MAX_INPUT_CHARS8, "VTerm", gVT_Terminals[i].Name);
- }
-
- // Add to DevFS
- DevFS_AddDevice( &gVT_DrvInfo );
-
- VT_InitOutput();
- VT_InitInput();
-
- // Set kernel output to VT0
- Debug_SetKTerminal("/Devices/VTerm/0");
-
- Log_Log("VTerm", "Returning %i", MODULE_ERR_OK);
- return MODULE_ERR_OK;
-}
-
-/**
- * \fn void VT_InitOutput()
- * \brief Initialise Video Output
- */
-void VT_InitOutput()
-{
- giVT_OutputDevHandle = VFS_Open(gsVT_OutputDevice, VFS_OPENFLAG_WRITE);
- if(giVT_OutputDevHandle == -1) {
- Log_Warning("VTerm", "Oh F**k, I can't open the video device '%s'", gsVT_OutputDevice);
- return ;
- }
- VT_SetResolution( giVT_RealWidth, giVT_RealHeight );
- VT_SetTerminal( 0 );
- VT_SetMode( VIDEO_BUFFMT_TEXT );
-}
-
-/**
- * \fn void VT_InitInput()
- * \brief Initialises the input
- */
-void VT_InitInput()
-{
- giVT_InputDevHandle = VFS_Open(gsVT_InputDevice, VFS_OPENFLAG_READ);
- if(giVT_InputDevHandle == -1) {
- Log_Warning("VTerm", "Can't open the input device '%s'", gsVT_InputDevice);
- return ;
- }
- VFS_IOCtl(giVT_InputDevHandle, KB_IOCTL_SETCALLBACK, VT_KBCallBack);
-}
-
-/**
- * \brief Set the video resolution
- * \param Width New screen width
- * \param Height New screen height
- */
-void VT_SetResolution(int Width, int Height)
-{
- tVideo_IOCtl_Mode mode = {0};
- int tmp;
- int i;
-
- // Create the video mode
- mode.width = Width;
- mode.height = Height;
- mode.bpp = 32;
- mode.flags = 0;
-
- // Set video mode
- VFS_IOCtl( giVT_OutputDevHandle, VIDEO_IOCTL_FINDMODE, &mode );
- tmp = mode.id;
- if( Width != mode.width || Height != mode.height )
- {
- Log_Warning("VTerm",
- "Selected resolution (%ix%i is not supported) by the device, using (%ix%i)",
- giVT_RealWidth, giVT_RealHeight,
- mode.width, mode.height
- );
- }
- VFS_IOCtl( giVT_OutputDevHandle, VIDEO_IOCTL_GETSETMODE, &tmp );
-
- // Resize text terminals if needed
- if( giVT_RealWidth != mode.width || giVT_RealHeight != mode.height )
- {
- int newBufSize = (giVT_RealWidth/giVT_CharWidth)
- *(giVT_RealHeight/giVT_CharHeight)
- *(giVT_Scrollback+1);
- //tVT_Char *tmp;
- // Resize the text terminals
- giVT_RealWidth = mode.width;
- giVT_RealHeight = mode.height;
- for( i = 0; i < NUM_VTS; i ++ )
- {
- if( gVT_Terminals[i].Mode != TERM_MODE_TEXT ) continue;
-
- gVT_Terminals[i].Text = realloc(
- gVT_Terminals[i].Text,
- newBufSize*sizeof(tVT_Char)
- );
- }
- }
-}
-
-/**
- * \brief Set video output buffer mode
- */
-void VT_SetMode(int Mode)
-{
- VFS_IOCtl( giVT_OutputDevHandle, VIDEO_IOCTL_SETBUFFORMAT, &Mode );
-}
-
-/**
- * \fn char *VT_ReadDir(tVFS_Node *Node, int Pos)
- * \brief Read from the VTerm Directory
- */
-char *VT_ReadDir(tVFS_Node *Node, int Pos)
-{
- if(Pos < 0) return NULL;
- if(Pos >= NUM_VTS) return NULL;
- return strdup( gVT_Terminals[Pos].Name );
-}
-
-/**
- * \fn tVFS_Node *VT_FindDir(tVFS_Node *Node, const char *Name)
- * \brief Find an item in the VTerm directory
- * \param Node Root node
- * \param Name Name (number) of the terminal
- */
-tVFS_Node *VT_FindDir(tVFS_Node *Node, const char *Name)
-{
- int num;
-
- ENTER("pNode sName", Node, Name);
-
- // Open the input and output files if needed
- if(giVT_OutputDevHandle == -2) VT_InitOutput();
- if(giVT_InputDevHandle == -2) VT_InitInput();
-
- // Sanity check name
- if(Name[0] < '0' || Name[0] > '9' || Name[1] != '\0') {
- LEAVE('n');
- return NULL;
- }
- // Get index
- num = Name[0] - '0';
- if(num >= NUM_VTS) {
- LEAVE('n');
- return NULL;
- }
- // Return node
- LEAVE('p', &gVT_Terminals[num].Node);
- return &gVT_Terminals[num].Node;
-}
-
-/**
- * \fn int VT_Root_IOCtl(tVFS_Node *Node, int Id, void *Data)
- * \brief Control the VTerm Driver
- */
-int VT_Root_IOCtl(tVFS_Node *Node, int Id, void *Data)
-{
- int len;
- switch(Id)
- {
- case DRV_IOCTL_TYPE: return DRV_TYPE_MISC;
- case DRV_IOCTL_IDENT: memcpy(Data, "VT\0\0", 4); return 0;
- case DRV_IOCTL_VERSION: return VERSION;
- case DRV_IOCTL_LOOKUP: return 0;
-
- case 4: // Get Video Driver
- if(Data) strcpy(Data, gsVT_OutputDevice);
- return strlen(gsVT_OutputDevice);
-
- case 5: // Set Video Driver
- if(!Data) return -EINVAL;
- if(Threads_GetUID() != 0) return -EACCES;
-
- len = strlen(Data);
-
- // TODO: Check if the string used is a heap string
-
- free(gsVT_OutputDevice);
-
- gsVT_OutputDevice = malloc(len+1);
- strcpy(gsVT_OutputDevice, Data);
-
- VFS_Close(giVT_OutputDevHandle);
- giVT_OutputDevHandle = -1;
-
- VT_InitOutput();
- return 1;
- }
- return 0;
-}
-
-/**
- * \fn Uint64 VT_Read(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
- * \brief Read from a virtual terminal
- */
-Uint64 VT_Read(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
-{
- int pos = 0;
- tVTerm *term = &gVT_Terminals[ Node->Inode ];
-
- Mutex_Acquire( &term->ReadingLock );
-
- // Check current mode
- switch(term->Mode)
- {
- // Text Mode (UTF-8)
- case TERM_MODE_TEXT:
- while(pos < Length)
- {
- int avail_bytes;
- avail_bytes = Semaphore_Wait( &term->InputSemaphore, Length );
- if( avail_bytes == -1 ) {
- break ;
- }
-
- while( avail_bytes -- )
- {
- ((char*)Buffer)[pos] = term->InputBuffer[term->InputRead];
- pos ++;
- term->InputRead ++;
- term->InputRead %= MAX_INPUT_CHARS8;
- }
- }
- break;
-
- //case TERM_MODE_FB:
- // Other - UCS-4
- default:
- while(pos < Length)
- {
- int avail;
- avail = Semaphore_Wait( &term->InputSemaphore, Length/4 * 4 );
- if( avail == -1 ) {
- break ;
- }
-
- while( avail > 3 )
- {
- ((Uint32*)Buffer)[pos] = ((Uint32*)term->InputBuffer)[term->InputRead];
- pos ++;
- term->InputRead ++;
- term->InputRead %= MAX_INPUT_CHARS32;
- avail -= 4;
- }
- }
- pos *= 4;
- break;
- }
-
- term->ReadingThread = -1;
- Mutex_Release( &term->ReadingLock );
-
- return pos;
-}
-
-/**
- * \fn Uint64 VT_Write(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
- * \brief Write to a virtual terminal
- */
-Uint64 VT_Write(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
-{
- tVTerm *term = &gVT_Terminals[ Node->Inode ];
- int size;
-
- // Write
- switch( term->Mode )
- {
- // Print Text
- case TERM_MODE_TEXT:
- VT_int_PutString(term, Buffer, Length);
- break;
- // Framebuffer :)
- case TERM_MODE_FB:
-
- // - Sanity Checking
- size = term->Width*term->Height*4;
- if( Offset > size ) {
- Log_Notice("VTerm", "VT_Write: Offset (0x%llx) > FBSize (0x%x)",
- Offset, size);
- return 0;
- }
- if( Offset + Length > size ) {
- Log_Notice("VTerm", "VT_Write: Offset+Length (0x%llx) > FBSize (0x%x)",
- Offset+Length, size);
- Length = size - Offset;
- }
-
- // Copy to the local cache
- memcpy( (void*)((Uint)term->Buffer + (Uint)Offset), Buffer, Length );
-
- // Update screen if needed
- if( Node->Inode == giVT_CurrentTerminal )
- {
- // Fill entire screen?
- if( giVT_RealWidth > term->Width || giVT_RealHeight > term->Height )
- {
- // No? :( Well, just center it
- int x, y, w, h;
- x = Offset/4; y = x / term->Width; x %= term->Width;
- w = Length/4+x; h = w / term->Width; w %= term->Width;
- // Center
- x += (giVT_RealWidth - term->Width) / 2;
- y += (giVT_RealHeight - term->Height) / 2;
- while(h--)
- {
- VFS_WriteAt( giVT_OutputDevHandle,
- (x + y * giVT_RealWidth)*4,
- term->Width * 4,
- Buffer
- );
- Buffer = (void*)( (Uint)Buffer + term->Width*4 );
- y ++;
- }
- return 0;
- }
- else {
- return VFS_WriteAt( giVT_OutputDevHandle, Offset, Length, Buffer );
- }
- }
- // Just pass on (for now)
- // TODO: Handle locally too to ensure no information is lost on
- // VT Switch (and to isolate terminals from each other)
- case TERM_MODE_2DACCEL:
- //case TERM_MODE_3DACCEL:
- if( Node->Inode == giVT_CurrentTerminal )
- {
- VFS_Write( giVT_OutputDevHandle, Length, Buffer );
- }
- break;
- }
-
- return 0;
-}
-
-/**
- * \fn int VT_Terminal_IOCtl(tVFS_Node *Node, int Id, void *Data)
- * \brief Call an IO Control on a virtual terminal
- */
-int VT_Terminal_IOCtl(tVFS_Node *Node, int Id, void *Data)
-{
- int *iData = Data;
- int ret;
- tVTerm *term = Node->ImplPtr;
- ENTER("pNode iId pData", Node, Id, Data);
-
- if(Id >= DRV_IOCTL_LOOKUP) {
- // Only root can fiddle with graphics modes
- // TODO: Remove this and replace with user ownership
- if( Threads_GetUID() != 0 ) return -1;
- }
-
- switch(Id)
- {
- // --- Core Defined
- case DRV_IOCTL_TYPE:
- LEAVE('i', DRV_TYPE_TERMINAL);
- return DRV_TYPE_TERMINAL;
- case DRV_IOCTL_IDENT:
- memcpy(Data, "VT\0\0", 4);
- LEAVE('i', 0);
- return 0;
- case DRV_IOCTL_VERSION:
- LEAVE('x', VERSION);
- return VERSION;
- case DRV_IOCTL_LOOKUP:
- LEAVE('i', 0);
- return 0;
-
- // Get/Set the mode (and apply any changes)
- case TERM_IOCTL_MODETYPE:
- if(Data != NULL)
- {
- if( CheckMem(Data, sizeof(int)) == 0 ) {
- LEAVE('i', -1);
- return -1;
- }
- Log_Log("VTerm", "VTerm %i mode set to %i", (int)Node->Inode, *iData);
-
- // Update mode if needed
- if( term->Mode != *iData
- || term->NewWidth
- || term->NewHeight)
- {
- // Adjust for text mode
- if( *iData == TERM_MODE_TEXT ) {
- term->NewHeight *= giVT_CharHeight;
- term->NewWidth *= giVT_CharWidth;
- }
- // Fill unchanged dimensions
- if(term->NewHeight == 0) term->NewHeight = term->Height;
- if(term->NewWidth == 0) term->NewWidth = term->Width;
- // Set new mode
- VT_int_ChangeMode(term, *iData, term->NewWidth, term->NewHeight);
- // Clear unapplied dimensions
- term->NewWidth = 0;
- term->NewHeight = 0;
- }
-
- // Update the screen dimensions
- if(Node->Inode == giVT_CurrentTerminal)
- VT_SetTerminal( giVT_CurrentTerminal );
- }
- LEAVE('i', term->Mode);
- return term->Mode;
-
- // Get/set the terminal width
- case TERM_IOCTL_WIDTH:
- if(Data != NULL) {
- if( CheckMem(Data, sizeof(int)) == 0 ) {
- LEAVE('i', -1);
- return -1;
- }
- term->NewWidth = *iData;
- }
- if( term->NewWidth )
- ret = term->NewWidth;
- else if( term->Mode == TERM_MODE_TEXT )
- ret = term->TextWidth;
- else
- ret = term->Width;
- LEAVE('i', ret);
- return ret;
-
- // Get/set the terminal height
- case TERM_IOCTL_HEIGHT:
- if(Data != NULL) {
- if( CheckMem(Data, sizeof(int)) == 0 ) {
- LEAVE('i', -1);
- return -1;
- }
- term->NewHeight = *iData;
- }
- if( term->NewHeight )
- ret = term->NewHeight;
- else if( term->Mode == TERM_MODE_TEXT )
- ret = term->TextHeight;
- else
- ret = term->Height;
- LEAVE('i', ret);
- return ret;
-
- case TERM_IOCTL_FORCESHOW:
- Log_Log("VTerm", "Thread %i forced VTerm %i to be shown",
- Threads_GetTID(), (int)Node->Inode);
- VT_SetTerminal( Node->Inode );
- LEAVE('i', 1);
- return 1;
- }
- LEAVE('i', -1);
- return -1;
-}
-
-/**
- * \fn void VT_SetTerminal(int ID)
- * \brief Set the current terminal
- */
-void VT_SetTerminal(int ID)
-{
- // Update current terminal ID
- Log_Log("VTerm", "Changed terminal from %i to %i", giVT_CurrentTerminal, ID);
- giVT_CurrentTerminal = ID;
- gpVT_CurTerm = &gVT_Terminals[ID];
-
- // Update cursor
- if( gpVT_CurTerm->Mode == TERM_MODE_TEXT && !(gpVT_CurTerm->Flags & VT_FLAG_HIDECSR) )
- {
- tVideo_IOCtl_Pos pos;
- pos.x = (gpVT_CurTerm->WritePos - gpVT_CurTerm->ViewPos) % gpVT_CurTerm->TextWidth;
- pos.y = (gpVT_CurTerm->WritePos - gpVT_CurTerm->ViewPos) / gpVT_CurTerm->TextWidth;
- if( pos.x < gpVT_CurTerm->TextHeight )
- VFS_IOCtl(giVT_OutputDevHandle, VIDEO_IOCTL_SETCURSOR, &pos);
- }
-
- if( gpVT_CurTerm->Mode == TERM_MODE_TEXT )
- VT_SetMode( VIDEO_BUFFMT_TEXT );
- else
- VT_SetMode( VIDEO_BUFFMT_FRAMEBUFFER );
-
- // Update the screen
- VT_int_UpdateScreen( &gVT_Terminals[ ID ], 1 );
-}
-
-/**
- * \fn void VT_KBCallBack(Uint32 Codepoint)
- * \brief Called on keyboard interrupt
- * \param Codepoint Pseudo-UTF32 character
- *
- * Handles a key press and sends the key code to the user's buffer.
- * If the code creates a kernel-magic sequence, it is not passed to the
- * user and is handled in-kernel.
- */
-void VT_KBCallBack(Uint32 Codepoint)
-{
- tVTerm *term = gpVT_CurTerm;
-
- // How the hell did we get a codepoint of zero?
- if(Codepoint == 0) return;
-
- // Key Up
- if( Codepoint & 0x80000000 )
- {
- Codepoint &= 0x7FFFFFFF;
- switch(Codepoint)
- {
- #if !USE_CTRL_ALT
- case KEY_RSHIFT: gbVT_CtrlDown = 0; break;
- case KEY_LSHIFT: gbVT_AltDown = 0; break;
- #else
- case KEY_LALT: gbVT_AltDown &= ~1; break;
- case KEY_RALT: gbVT_AltDown &= ~2; break;
- case KEY_LCTRL: gbVT_CtrlDown &= ~1 break;
- case KEY_RCTRL: gbVT_CtrlDown &= ~2; break;
- #endif
- }
- return;
- }
-
- switch(Codepoint)
- {
- #if !USE_CTRL_ALT // HACK: Use both shifts instead of Ctrl-Alt
- case KEY_RSHIFT: gbVT_CtrlDown = 1; break;
- case KEY_LSHIFT: gbVT_AltDown = 1; break;
- #else
- case KEY_LALT: gbVT_AltDown |= 1; break;
- case KEY_RALT: gbVT_AltDown |= 2; break;
- case KEY_LCTRL: gbVT_CtrlDown |= 1; break;
- case KEY_RCTRL: gbVT_CtrlDown |= 2; break;
- #endif
-
- default:
- if(!gbVT_AltDown || !gbVT_CtrlDown)
- break;
- switch(Codepoint)
- {
- case KEY_F1: VT_SetTerminal(0); return;
- case KEY_F2: VT_SetTerminal(1); return;
- case KEY_F3: VT_SetTerminal(2); return;
- case KEY_F4: VT_SetTerminal(3); return;
- case KEY_F5: VT_SetTerminal(4); return;
- case KEY_F6: VT_SetTerminal(5); return;
- case KEY_F7: VT_SetTerminal(6); return;
- case KEY_F8: VT_SetTerminal(7); return;
- case KEY_F9: VT_SetTerminal(8); return;
- case KEY_F10: VT_SetTerminal(9); return;
- case KEY_F11: VT_SetTerminal(10); return;
- case KEY_F12: VT_SetTerminal(11); return;
- // Scrolling
- case KEY_PGUP:
- if( gpVT_CurTerm->ViewPos > gpVT_CurTerm->Width )
- gpVT_CurTerm->ViewPos -= gpVT_CurTerm->Width;
- else
- gpVT_CurTerm->ViewPos = 0;
- return;
- case KEY_PGDOWN:
- if( gpVT_CurTerm->ViewPos < gpVT_CurTerm->Width*gpVT_CurTerm->Height*(giVT_Scrollback-1) )
- gpVT_CurTerm->ViewPos += gpVT_CurTerm->Width;
- else
- gpVT_CurTerm->ViewPos = gpVT_CurTerm->Width*gpVT_CurTerm->Height*(giVT_Scrollback-1);
- return;
- }
- }
-
- // Encode key
- if(term->Mode == TERM_MODE_TEXT)
- {
- Uint8 buf[6] = {0};
- int len = 0;
-
- // Ignore Modifer Keys
- if(Codepoint > KEY_MODIFIERS) return;
-
- // Get UTF-8/ANSI Encoding
- switch(Codepoint)
- {
- case KEY_LEFT:
- buf[0] = '\x1B'; buf[1] = '['; buf[2] = 'D';
- len = 3;
- break;
- case KEY_RIGHT:
- buf[0] = '\x1B'; buf[1] = '['; buf[2] = 'C';
- len = 3;
- break;
- case KEY_UP:
- buf[0] = '\x1B'; buf[1] = '['; buf[2] = 'A';
- len = 3;
- break;
- case KEY_DOWN:
- buf[0] = '\x1B'; buf[1] = '['; buf[2] = 'B';
- len = 3;
- break;
-
- case KEY_PGUP:
- buf[0] = '\x1B'; buf[1] = '['; buf[2] = '5'; // Some overline also
- //len = 4; // Commented out until I'm sure
- break;
- case KEY_PGDOWN:
- len = 0;
- break;
-
- // Attempt to encode in UTF-8
- default:
- len = WriteUTF8( buf, Codepoint );
- if(len == 0) {
- Warning("Codepoint (%x) is unrepresentable in UTF-8", Codepoint);
- }
- break;
- }
-
- if(len == 0) {
- // Unprintable / Don't Pass
- return;
- }
-
- // Write
- if( MAX_INPUT_CHARS8 - term->InputWrite >= len )
- memcpy( &term->InputBuffer[term->InputWrite], buf, len );
- else {
- memcpy( &term->InputBuffer[term->InputWrite], buf, MAX_INPUT_CHARS8 - term->InputWrite );
- memcpy( &term->InputBuffer[0], buf, len - (MAX_INPUT_CHARS8 - term->InputWrite) );
- }
- // Roll the buffer over
- term->InputWrite += len;
- term->InputWrite %= MAX_INPUT_CHARS8;
- if( (term->InputWrite - term->InputRead + MAX_INPUT_CHARS8)%MAX_INPUT_CHARS8 < len ) {
- term->InputRead = term->InputWrite + 1;
- term->InputRead %= MAX_INPUT_CHARS8;
- }
-
- Semaphore_Signal(&term->InputSemaphore, 1);
- }
- else
- {
- // Encode the raw UTF-32 Key
- ((Uint32*)term->InputBuffer)[ term->InputWrite ] = Codepoint;
- term->InputWrite ++;
- term->InputWrite %= MAX_INPUT_CHARS32;
- if(term->InputRead == term->InputWrite) {
- term->InputRead ++;
- term->InputRead %= MAX_INPUT_CHARS32;
- }
- Semaphore_Signal(&term->InputSemaphore, 4);
- }
-
- // Wake up the thread waiting on us
- //if( term->ReadingThread >= 0 ) {
- // Threads_WakeTID(term->ReadingThread);
- //}
-}
-
-/**
- * \fn void VT_int_ClearLine(tVTerm *Term, int Num)
- * \brief Clears a line in a virtual terminal
- */
-void VT_int_ClearLine(tVTerm *Term, int Num)
-{
- int i;
- tVT_Char *cell = &Term->Text[ Num*Term->TextWidth ];
- if( Num < 0 || Num >= Term->TextHeight * (giVT_Scrollback + 1) ) return ;
- //ENTER("pTerm iNum", Term, Num);
- for( i = Term->TextWidth; i--; )
- {
- cell[ i ].Ch = 0;
- cell[ i ].Colour = Term->CurColour;
- }
- //LEAVE('-');
-}
-
-/**
- * \fn int VT_int_ParseEscape(tVTerm *Term, char *Buffer)
- * \brief Parses a VT100 Escape code
- */
-int VT_int_ParseEscape(tVTerm *Term, char *Buffer)
-{
- char c;
- int argc = 0, j = 1;
- int tmp;
- int args[6] = {0,0,0,0};
-
- switch(Buffer[0])
- {
- //Large Code
- case '[':
- // Get Arguments
- c = Buffer[j++];
- if( '0' <= c && c <= '9' )
- {
- do {
- if(c == ';') c = Buffer[j++];
- while('0' <= c && c <= '9') {
- args[argc] *= 10;
- args[argc] += c-'0';
- c = Buffer[j++];
- }
- argc ++;
- } while(c == ';');
- }
-
- // Get Command
- if( ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z'))
- {
- switch(c)
- {
- // Left
- case 'D':
- if(argc == 1) tmp = args[0];
- else tmp = 1;
-
- if( Term->WritePos-(tmp-1) % Term->TextWidth == 0 )
- Term->WritePos -= Term->WritePos % Term->TextWidth;
- else
- Term->WritePos -= tmp;
- break;
-
- // Right
- case 'C':
- if(argc == 1) tmp = args[0];
- else tmp = 1;
- if( (Term->WritePos + tmp) % Term->TextWidth == 0 ) {
- Term->WritePos -= Term->WritePos % Term->TextWidth;
- Term->WritePos += Term->TextWidth - 1;
- } else
- Term->WritePos += tmp;
- break;
-
- // Clear By Line
- case 'J':
- // Clear Screen
- switch(args[0])
- {
- case 2:
- {
- int i = Term->TextHeight * (giVT_Scrollback + 1);
- while( i-- ) VT_int_ClearLine(Term, i);
- Term->WritePos = 0;
- Term->ViewPos = 0;
- VT_int_UpdateScreen(Term, 1);
- }
- break;
- }
- break;
- // Set cursor position
- case 'h':
- Term->WritePos = args[0] + args[1]*Term->TextWidth;
- Log_Debug("VTerm", "args = {%i, %i}", args[0], args[1]);
- break;
- // Set Font flags
- case 'm':
- for( ; argc--; )
- {
- // Flags
- if( 0 <= args[argc] && args[argc] <= 8)
- {
- switch(args[argc])
- {
- case 0: Term->CurColour = DEFAULT_COLOUR; break; // Reset
- case 1: Term->CurColour |= 0x80000000; break; // Bright
- case 2: Term->CurColour &= ~0x80000000; break; // Dim
- }
- }
- // Foreground Colour
- else if(30 <= args[argc] && args[argc] <= 37) {
- Term->CurColour &= 0xF000FFFF;
- Term->CurColour |= (Uint32)caVT100Colours[ args[argc]-30+(Term->CurColour>>28) ] << 16;
- }
- // Background Colour
- else if(40 <= args[argc] && args[argc] <= 47) {
- Term->CurColour &= 0xFFFF8000;
- Term->CurColour |= caVT100Colours[ args[argc]-40+((Term->CurColour>>12)&15) ];
- }
- }
- break;
- default:
- Log_Warning("VTerm", "Unknown control sequence");
- break;
- }
- }
- break;
-
- default: break;
- }
-
- //Log_Debug("VTerm", "j = %i, Buffer = '%s'", j, Buffer);
- return j;
-}
-
-/**
- * \fn void VT_int_PutString(tVTerm *Term, Uint8 *Buffer, Uint Count)
- * \brief Print a string to the Virtual Terminal
- */
-void VT_int_PutString(tVTerm *Term, Uint8 *Buffer, Uint Count)
-{
- Uint32 val;
- int i;
-
- // Iterate
- for( i = 0; i < Count; i++ )
- {
- // Handle escape sequences
- if( Buffer[i] == 0x1B )
- {
- i ++;
- i += VT_int_ParseEscape(Term, (char*)&Buffer[i]) - 1;
- continue;
- }
-
- // Fast check for non UTF-8
- if( Buffer[i] < 128 ) // Plain ASCII
- VT_int_PutChar(Term, Buffer[i]);
- else { // UTF-8
- i += ReadUTF8(&Buffer[i], &val) - 1;
- VT_int_PutChar(Term, val);
- }
- }
- // Update Screen
- VT_int_UpdateScreen( Term, 0 );
-
- // Update cursor
- if( Term == gpVT_CurTerm && !(Term->Flags & VT_FLAG_HIDECSR) )
- {
- tVideo_IOCtl_Pos pos;
- pos.x = (Term->WritePos - Term->ViewPos) % Term->TextWidth;
- pos.y = (Term->WritePos - Term->ViewPos) / Term->TextWidth;
- VFS_IOCtl(giVT_OutputDevHandle, VIDEO_IOCTL_SETCURSOR, &pos);
- }
-}
-
-/**
- * \fn void VT_int_PutChar(tVTerm *Term, Uint32 Ch)
- * \brief Write a single character to a VTerm
- */
-void VT_int_PutChar(tVTerm *Term, Uint32 Ch)
-{
- int i;
-
- switch(Ch)
- {
- case '\0': return; // Ignore NULL byte
- case '\n':
- VT_int_UpdateScreen( Term, 0 ); // Update the line before newlining
- Term->WritePos += Term->TextWidth;
- case '\r':
- Term->WritePos -= Term->WritePos % Term->TextWidth;
- break;
-
- case '\t':
- do {
- Term->Text[ Term->WritePos ].Ch = '\0';
- Term->Text[ Term->WritePos ].Colour = Term->CurColour;
- Term->WritePos ++;
- } while(Term->WritePos & 7);
- break;
-
- case '\b':
- // Backspace is invalid at Offset 0
- if(Term->WritePos == 0) break;
-
- Term->WritePos --;
- // Singe Character
- if(Term->Text[ Term->WritePos ].Ch != '\0') {
- Term->Text[ Term->WritePos ].Ch = 0;
- Term->Text[ Term->WritePos ].Colour = Term->CurColour;
- break;
- }
- // Tab
- i = 7; // Limit it to 8
- do {
- Term->Text[ Term->WritePos ].Ch = 0;
- Term->Text[ Term->WritePos ].Colour = Term->CurColour;
- Term->WritePos --;
- } while(Term->WritePos && i-- && Term->Text[ Term->WritePos ].Ch == '\0');
- if(Term->Text[ Term->WritePos ].Ch != '\0')
- Term->WritePos ++;
- break;
-
- default:
- Term->Text[ Term->WritePos ].Ch = Ch;
- Term->Text[ Term->WritePos ].Colour = Term->CurColour;
- Term->WritePos ++;
- break;
- }
-
- // Move Screen
- // - Check if we need to scroll the entire scrollback buffer
- if(Term->WritePos >= Term->TextWidth*Term->TextHeight*(giVT_Scrollback+1))
- {
- int base;
-
- // Move back by one
- Term->WritePos -= Term->TextWidth;
- // Update the scren
- VT_int_UpdateScreen( Term, 0 );
-
- // Update view position
- base = Term->TextWidth*Term->TextHeight*(giVT_Scrollback);
- if(Term->ViewPos < base)
- Term->ViewPos += Term->Width;
- if(Term->ViewPos > base)
- Term->ViewPos = base;
-
- // Scroll terminal cache
- base = Term->TextWidth*(Term->TextHeight*(giVT_Scrollback+1)-1);
- memcpy(
- Term->Text,
- &Term->Text[Term->TextWidth],
- base*sizeof(tVT_Char)
- );
-
- // Clear last row
- for( i = 0; i < Term->TextWidth; i ++ )
- {
- Term->Text[ base + i ].Ch = 0;
- Term->Text[ base + i ].Colour = Term->CurColour;
- }
-
- VT_int_ScrollFramebuffer( Term );
- VT_int_UpdateScreen( Term, 0 );
- }
- // Ok, so we only need to scroll the screen
- else if(Term->WritePos >= Term->ViewPos + Term->TextWidth*Term->TextHeight)
- {
- //Debug("Term->WritePos (%i) >= %i",
- // Term->WritePos,
- // Term->ViewPos + Term->Width*Term->Height
- // );
- //Debug("Scrolling screen only");
-
- // Update the last line
- Term->WritePos -= Term->TextWidth;
- VT_int_UpdateScreen( Term, 0 );
- Term->WritePos += Term->TextWidth;
- VT_int_ClearLine(Term, Term->WritePos / Term->TextWidth);
-
- // Scroll
- Term->ViewPos += Term->TextWidth;
- //Debug("Term->ViewPos = %i", Term->ViewPos);
- VT_int_ScrollFramebuffer( Term );
- VT_int_UpdateScreen( Term, 0 );
- }
-
- //LEAVE('-');
-}
-
-/**
- * \fn void VT_int_ScrollFramebuffer( tVTerm *Term )
- * \note Scrolls the framebuffer by 1 text line
- */
-void VT_int_ScrollFramebuffer( tVTerm *Term )
-{
- int tmp;
- struct {
- Uint8 Op;
- Uint16 DstX, DstY;
- Uint16 SrcX, SrcY;
- Uint16 W, H;
- } PACKED buf;
-
- // Only update if this is the current terminal
- if( Term != gpVT_CurTerm ) return;
-
- // Switch to 2D Command Stream
- tmp = VIDEO_BUFFMT_2DSTREAM;
- VFS_IOCtl(giVT_OutputDevHandle, VIDEO_IOCTL_SETBUFFORMAT, &tmp);
-
- // BLIT from 0,0 to 0,giVT_CharHeight
- buf.Op = VIDEO_2DOP_BLIT;
- buf.DstX = 0; buf.DstY = 0;
- buf.SrcX = 0; buf.SrcY = giVT_CharHeight;
- buf.W = Term->TextWidth * giVT_CharWidth;
- buf.H = (Term->TextHeight-1) * giVT_CharHeight;
- VFS_WriteAt(giVT_OutputDevHandle, 0, sizeof(buf), &buf);
-
- // Restore old mode (this function is only called during text mode)
- tmp = VIDEO_BUFFMT_TEXT;
- VFS_IOCtl(giVT_OutputDevHandle, VIDEO_IOCTL_SETBUFFORMAT, &tmp);
-}
-
-/**
- * \fn void VT_int_UpdateScreen( tVTerm *Term, int UpdateAll )
- * \brief Updates the video framebuffer
- */
-void VT_int_UpdateScreen( tVTerm *Term, int UpdateAll )
-{
- // Only update if this is the current terminal
- if( Term != gpVT_CurTerm ) return;
-
- switch( Term->Mode )
- {
- case TERM_MODE_TEXT:
- // Re copy the entire screen?
- if(UpdateAll) {
- VFS_WriteAt(
- giVT_OutputDevHandle,
- 0,
- Term->TextWidth*Term->TextHeight*sizeof(tVT_Char),
- &Term->Text[Term->ViewPos]
- );
- }
- // Only copy the current line
- else {
- int pos = Term->WritePos - Term->WritePos % Term->TextWidth;
- VFS_WriteAt(
- giVT_OutputDevHandle,
- (pos - Term->ViewPos)*sizeof(tVT_Char),
- Term->TextWidth*sizeof(tVT_Char),
- &Term->Text[pos]
- );
- }
- break;
- case TERM_MODE_FB:
- VFS_WriteAt(
- giVT_OutputDevHandle,
- 0,
- Term->Width*Term->Height*sizeof(Uint32),
- Term->Buffer
- );
- break;
- }
-}
-
-/**
- * \brief Update the screen mode
- * \param Term Terminal to update
- * \param NewMode New mode to set
- * \param NewWidth New framebuffer width
- * \param NewHeight New framebuffer height
- */
-void VT_int_ChangeMode(tVTerm *Term, int NewMode, int NewWidth, int NewHeight)
-{
- int oldW = Term->Width;
- int oldTW = oldW / giVT_CharWidth;
- int oldH = Term->Height;
- int oldTH = oldH / giVT_CharWidth;
- tVT_Char *oldTBuf = Term->Text;
- Uint32 *oldFB = Term->Buffer;
- int w, h, i;
-
- // TODO: Increase RealWidth/RealHeight when this happens
- if(NewWidth > giVT_RealWidth) NewWidth = giVT_RealWidth;
- if(NewHeight > giVT_RealHeight) NewHeight = giVT_RealHeight;
-
- // Calculate new dimensions
- Term->TextWidth = NewWidth / giVT_CharWidth;
- Term->TextHeight = NewHeight / giVT_CharHeight;
- Term->Width = NewWidth;
- Term->Height = NewHeight;
- Term->Mode = NewMode;
-
- // Allocate new buffers
- // - Text
- Term->Text = calloc(
- Term->TextWidth * Term->TextHeight * (giVT_Scrollback+1),
- sizeof(tVT_Char)
- );
- if(oldTBuf) {
- // Copy old buffer
- w = oldTW;
- if( w > Term->TextWidth ) w = Term->TextWidth;
- h = oldTH;
- if( h > Term->TextHeight ) h = Term->TextHeight;
- h *= giVT_Scrollback + 1;
- for( i = 0; i < h; i ++ )
- {
- memcpy(
- &Term->Text[i*Term->TextWidth],
- &oldTBuf[i*oldTW],
- w*sizeof(tVT_Char)
- );
-
- }
- }
-
- // - Framebuffer
- Term->Buffer = calloc( Term->Width * Term->Height, sizeof(Uint32) );
- if(oldFB) {
- // Copy old buffer
- w = oldW;
- if( w > Term->Width ) w = Term->Width;
- h = oldH;
- if( h > Term->Height ) h = Term->Height;
- for( i = 0; i < h; i ++ )
- {
- memcpy(
- &Term->Buffer[i*Term->Width],
- &oldFB[i*oldW],
- w*sizeof(Uint32)
- );
- }
- }
-
-
- // Debug
- switch(NewMode)
- {
- case TERM_MODE_TEXT:
- Log_Log("VTerm", "Set VT %p to text mode (%ix%i)",
- Term, Term->TextWidth, Term->TextHeight);
- break;
- case TERM_MODE_FB:
- Log_Log("VTerm", "Set VT %p to framebuffer mode (%ix%i)",
- Term, Term->Width, Term->Height);
- break;
- //case TERM_MODE_2DACCEL:
- //case TERM_MODE_3DACCEL:
- // return;
- }
-}
-
-// ---
-// Font Render
-// ---
-#define MONOSPACE_FONT 10816
-
-#if MONOSPACE_FONT == 10808 // 8x8
-# include "vterm_font_8x8.h"
-#elif MONOSPACE_FONT == 10816 // 8x16
-# include "vterm_font_8x16.h"
-#endif
-
-// === PROTOTYPES ===
-Uint8 *VT_Font_GetChar(Uint32 Codepoint);
-
-// === GLOBALS ===
-int giVT_CharWidth = FONT_WIDTH;
-int giVT_CharHeight = FONT_HEIGHT;
-
-// === CODE ===
-/**
- * \brief Render a font character
- */
-void VT_Font_Render(Uint32 Codepoint, void *Buffer, int Depth, int Pitch, Uint32 BGC, Uint32 FGC)
-{
- Uint8 *font;
- int x, y;
-
- // 8-bpp and below
- if( Depth <= 8 )
- {
- Uint8 *buf = Buffer;
-
- font = VT_Font_GetChar(Codepoint);
-
- for(y = 0; y < FONT_HEIGHT; y ++)
- {
- for(x = 0; x < FONT_WIDTH; x ++)
- {
- if(*font & (1 << (FONT_WIDTH-x-1)))
- buf[x] = FGC;
- else
- buf[x] = BGC;
- }
- buf = (void*)( (tVAddr)buf + Pitch );
- font ++;
- }
- }
- // 16-bpp and below
- else if( Depth <= 16 )
- {
- Uint16 *buf = Buffer;
-
- font = VT_Font_GetChar(Codepoint);
-
- for(y = 0; y < FONT_HEIGHT; y ++)
- {
- for(x = 0; x < FONT_WIDTH; x ++)
- {
- if(*font & (1 << (FONT_WIDTH-x-1)))
- buf[x] = FGC;
- else
- buf[x] = BGC;
- }
- buf = (void*)( (tVAddr)buf + Pitch );
- font ++;
- }
- }
- // 24-bpp colour
- // - Special handling to not overwrite the next pixel
- //TODO: Endian issues here
- else if( Depth == 24 )
- {
- Uint8 *buf = Buffer;
- Uint8 bg_r = (BGC >> 16) & 0xFF;
- Uint8 bg_g = (BGC >> 8) & 0xFF;
- Uint8 bg_b = (BGC >> 0) & 0xFF;
- Uint8 fg_r = (FGC >> 16) & 0xFF;
- Uint8 fg_g = (FGC >> 8) & 0xFF;
- Uint8 fg_b = (FGC >> 0) & 0xFF;
-
- font = VT_Font_GetChar(Codepoint);
-
- for(y = 0; y < FONT_HEIGHT; y ++)
- {
- for(x = 0; x < FONT_WIDTH; x ++)
- {
- Uint8 r, g, b;
-
- if(*font & (1 << (FONT_WIDTH-x-1))) {
- r = fg_r; g = fg_g; b = fg_b;
- }
- else {
- r = bg_r; g = bg_g; b = bg_b;
- }
- buf[x*3+0] = b;
- buf[x*3+1] = g;
- buf[x*3+2] = r;
- }
- buf = (void*)( (tVAddr)buf + Pitch );
- font ++;
- }
- }
- // 32-bpp colour (nice and easy)
- else if( Depth == 32 )
- {
- Uint32 *buf = Buffer;
-
- font = VT_Font_GetChar(Codepoint);
-
- for(y = 0; y < FONT_HEIGHT; y ++)
- {
- for(x = 0; x < FONT_WIDTH; x ++)
- {
- if(*font & (1 << (FONT_WIDTH-x-1)))
- buf[x] = FGC;
- else
- buf[x] = BGC;
- }
- buf = (Uint32*)( (tVAddr)buf + Pitch );
- font ++;
- }
- }
-}
-
-/**
- * \fn Uint32 VT_Colour12to24(Uint16 Col12)
- * \brief Converts a 12-bit colour into 24 bits
- */
-Uint32 VT_Colour12to24(Uint16 Col12)
-{
- Uint32 ret;
- int tmp;
- tmp = Col12 & 0xF;
- ret = (tmp << 0) | (tmp << 4);
- tmp = (Col12 & 0xF0) >> 4;
- ret |= (tmp << 8) | (tmp << 12);
- tmp = (Col12 & 0xF00) >> 8;
- ret |= (tmp << 16) | (tmp << 20);
- return ret;
-}
-/**
- * \brief Converts a 12-bit colour into 15 bits
- */
-Uint16 VT_Colour12to15(Uint16 Col12)
-{
- Uint32 ret;
- int tmp;
- tmp = Col12 & 0xF;
- ret = (tmp << 1) | (tmp & 1);
- tmp = (Col12 & 0xF0) >> 4;
- ret |= ( (tmp << 1) | (tmp & 1) ) << 5;
- tmp = (Col12 & 0xF00) >> 8;
- ret |= ( (tmp << 1) | (tmp & 1) ) << 10;
- return ret;
-}
-
-/**
- * \brief Converts a 12-bit colour into any other depth
- * \param Col12 12-bit source colour
- * \param Depth Desired bit deptj
- * \note Green then blue get the extra avaliable bits (16:5-6-5, 14:4-5-5)
- */
-Uint32 VT_Colour12toN(Uint16 Col12, int Depth)
-{
- Uint32 ret;
- Uint32 r, g, b;
- int rSize, gSize, bSize;
-
- // Fast returns
- if( Depth == 24 ) return VT_Colour12to24(Col12);
- if( Depth == 15 ) return VT_Colour12to15(Col12);
- // - 32 is a special case, it's usually 24-bit colour with an unused byte
- if( Depth == 32 ) return VT_Colour12to24(Col12);
-
- // Bounds checks
- if( Depth < 8 ) return 0;
- if( Depth > 32 ) return 0;
-
- r = Col12 & 0xF;
- g = (Col12 & 0xF0) >> 4;
- b = (Col12 & 0xF00) >> 8;
-
- rSize = gSize = bSize = Depth / 3;
- if( rSize + gSize + bSize < Depth ) // Depth % 3 == 1
- gSize ++;
- if( rSize + gSize + bSize < Depth ) // Depth % 3 == 2
- bSize ++;
-
- // Expand
- r <<= rSize - 4; g <<= gSize - 4; b <<= bSize - 4;
- // Fill with the lowest bit
- if( Col12 & 0x001 ) r |= (1 << (rSize - 4)) - 1;
- if( Col12 & 0x010 ) r |= (1 << (gSize - 4)) - 1;
- if( Col12 & 0x100 ) r |= (1 << (bSize - 4)) - 1;
-
- // Create output
- ret = r;
- ret |= g << rSize;
- ret |= b << (rSize + gSize);
-
- return ret;
-}
-
-/**
- * \fn Uint8 *VT_Font_GetChar(Uint32 Codepoint)
- * \brief Gets an index into the font array given a Unicode Codepoint
- * \note See http://en.wikipedia.org/wiki/CP437
- */
-Uint8 *VT_Font_GetChar(Uint32 Codepoint)
-{
- int index = 0;
- if(Codepoint < 128)
- return &VTermFont[Codepoint*FONT_HEIGHT];
- switch(Codepoint)
- {
- case 0xC7: index = 128; break; // Ç
- case 0xFC: index = 129; break; // ü
- case 0xE9: index = 130; break; // é
- case 0xE2: index = 131; break; // â
- case 0xE4: index = 132; break; // ä
- case 0xE0: index = 133; break; // à
- case 0xE5: index = 134; break; // å
- case 0xE7: index = 135; break; // ç
- case 0xEA: index = 136; break; // ê
- case 0xEB: index = 137; break; // ë
- case 0xE8: index = 138; break; // è
- case 0xEF: index = 139; break; // ï
- case 0xEE: index = 140; break; // î
- case 0xEC: index = 141; break; // ì
- case 0xC4: index = 142; break; // Ä
- case 0xC5: index = 143; break; // Å
- }
-
- return &VTermFont[index*FONT_HEIGHT];
-}
-
-EXPORTAS(&giVT_CharWidth, giVT_CharWidth);
-EXPORTAS(&giVT_CharHeight, giVT_CharHeight);
-EXPORT(VT_Font_Render);
-EXPORT(VT_Colour12to24);
git.ucc.asn.au / tpg / acess2.git / blobdiff
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