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reactos/rosapps/green/screen.c

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/*
* PROJECT: ReactOS VT100 emulator
* LICENSE: GPL - See COPYING in the top level directory
* FILE: drivers/base/green/screen.c
* PURPOSE: IRP_MJ_PNP operations
* PROGRAMMERS: Copyright 2005 Eric Kohl (ekohl@abo.rhein-zeitung.de)
* Copyright 2005 Art Yerkes
* Copyright 2005-2006 Hervé Poussineau (hpoussin@reactos.org)
*/
#include "green.h"
#define NDEBUG
#include <debug.h>
#define ESC ((UCHAR)0x1b)
/* Force a move of the cursor on each printer char.
* Very useful for debug, but it is very slow...
*/
//#define FORCE_POSITION
/* UCHAR is promoted to int when passed through '...',
* so we get int with va_arg and cast them back to UCHAR.
*/
static VOID
AddToSendBuffer(
IN PSCREEN_DEVICE_EXTENSION DeviceExtension,
IN ULONG NumberOfChars,
... /* IN int */)
{
PIRP Irp;
IO_STATUS_BLOCK ioStatus;
va_list args;
PDEVICE_OBJECT SerialDevice;
ULONG SizeLeft;
int CurrentInt;
UCHAR CurrentChar;
NTSTATUS Status;
LARGE_INTEGER ZeroOffset;
ZeroOffset.QuadPart = 0;
SizeLeft = sizeof(DeviceExtension->SendBuffer) - DeviceExtension->SendBufferPosition;
if (SizeLeft < NumberOfChars * 2 || NumberOfChars == 0)
{
SerialDevice = ((PGREEN_DEVICE_EXTENSION)DeviceExtension->Green->DeviceExtension)->Serial;
Irp = IoBuildSynchronousFsdRequest(
IRP_MJ_WRITE,
SerialDevice,
DeviceExtension->SendBuffer, DeviceExtension->SendBufferPosition,
&ZeroOffset,
NULL, /* Event */
&ioStatus);
if (!Irp)
{
DPRINT1("IoBuildSynchronousFsdRequest() failed. Unable to flush output buffer\n");
return;
}
Status = IoCallDriver(SerialDevice, Irp);
if (!NT_SUCCESS(Status) && Status != STATUS_PENDING)
{
DPRINT1("IoCallDriver() failed. Status = 0x%08lx\n", Status);
return;
}
DeviceExtension->SendBufferPosition = 0;
SizeLeft = sizeof(DeviceExtension->SendBuffer);
}
va_start(args, NumberOfChars);
while (NumberOfChars-- > 0)
{
CurrentInt = va_arg(args, int);
if (CurrentInt > 0)
{
CurrentChar = (UCHAR)CurrentInt;
/* Why 0xff chars are printed on a 'dir' ? */
if (CurrentChar == 0xff) CurrentChar = ' ';
DeviceExtension->SendBuffer[DeviceExtension->SendBufferPosition++] = CurrentChar;
SizeLeft--;
}
else if (CurrentInt == 0)
{
DeviceExtension->SendBuffer[DeviceExtension->SendBufferPosition++] = '0';
SizeLeft--;
}
else
{
CurrentInt = -CurrentInt;
ASSERT(CurrentInt < 100);
if (CurrentInt >= 10)
{
DeviceExtension->SendBuffer[DeviceExtension->SendBufferPosition++] =
(CurrentInt / 10) % 10 + '0';
SizeLeft--;
}
DeviceExtension->SendBuffer[DeviceExtension->SendBufferPosition++] =
CurrentInt % 10 + '0';
SizeLeft--;
}
}
va_end(args);
}
NTSTATUS
ScreenAddDevice(
IN PDRIVER_OBJECT DriverObject,
IN PDEVICE_OBJECT Pdo)
{
/* We want to be an upper filter of Blue, if it is existing.
* We also *have to* create a Fdo on top of the given Pdo.
* Hence, we have 2 cases:
* - Blue doesn't exist -> Create a unique Fdo (named Blue) at
* the top of the given Pdo
* - Blue does exist -> Create a Fdo at the top of the existing
* DO, and create a "pass to Green" FDO at the top of the Pdo
*/
PDEVICE_OBJECT Fdo = NULL;
PDEVICE_OBJECT PassThroughFdo = NULL;
PDEVICE_OBJECT LowerDevice = NULL;
PDEVICE_OBJECT PreviousBlue = NULL;
PSCREEN_DEVICE_EXTENSION DeviceExtension = NULL;
UNICODE_STRING BlueScreenName = RTL_CONSTANT_STRING(L"\\Device\\BlueScreen");
NTSTATUS Status;
DPRINT("ScreenInitialize() called\n");
/* Try to create a unique Fdo */
Status = IoCreateDevice(
DriverObject,
sizeof(SCREEN_DEVICE_EXTENSION),
&BlueScreenName,
FILE_DEVICE_SCREEN,
FILE_DEVICE_SECURE_OPEN,
TRUE,
&Fdo);
if (Status == STATUS_OBJECT_NAME_COLLISION)
{
DPRINT("Attaching to old blue\n");
/* Suggested by hpoussin .. Hide previous blue device
* This makes us able to coexist with blue, and install
* when loaded */
Status = IoCreateDevice(
DriverObject,
sizeof(SCREEN_DEVICE_EXTENSION),
NULL,
FILE_DEVICE_SCREEN,
FILE_DEVICE_SECURE_OPEN,
TRUE,
&Fdo);
if (!NT_SUCCESS(Status))
{
DPRINT("IoCreateDevice() failed with status 0x%08lx\n", Status);
goto cleanup;
}
/* Initialize some fields, as IoAttachDevice will trigger the
* sending of IRP_MJ_CLEANUP/IRP_MJ_CLOSE. We have to know where to
* dispatch these IRPs... */
((PSCREEN_DEVICE_EXTENSION)Fdo->DeviceExtension)->Common.Type = ScreenPDO;
Status = IoAttachDevice(
Fdo,
&BlueScreenName,
&LowerDevice);
if (!NT_SUCCESS(Status))
{
DPRINT("IoAttachDevice() failed with status 0x%08lx\n", Status);
goto cleanup;
}
PreviousBlue = LowerDevice;
/* Attach a faked FDO to PDO */
Status = IoCreateDevice(
DriverObject,
sizeof(COMMON_FDO_DEVICE_EXTENSION),
NULL,
FILE_DEVICE_SCREEN,
FILE_DEVICE_SECURE_OPEN,
TRUE,
&PassThroughFdo);
if (!NT_SUCCESS(Status))
{
DPRINT("IoCreateDevice() failed with status 0x%08lx\n", Status);
goto cleanup;
}
((PCOMMON_FDO_DEVICE_EXTENSION)PassThroughFdo->DeviceExtension)->Type = PassThroughFDO;
((PCOMMON_FDO_DEVICE_EXTENSION)PassThroughFdo->DeviceExtension)->LowerDevice = Fdo;
PassThroughFdo->StackSize = Fdo->StackSize + 1;
}
else if (NT_SUCCESS(Status))
{
/* Attach the named Fdo on top of Pdo */
LowerDevice = IoAttachDeviceToDeviceStack(Fdo, Pdo);
}
else
{
DPRINT("IoCreateDevice() failed with status 0x%08lx\n", Status);
return Status;
}
/* We definately have a device object. PreviousBlue may or may
* not be null */
DeviceExtension = (PSCREEN_DEVICE_EXTENSION)Fdo->DeviceExtension;
RtlZeroMemory(DeviceExtension, sizeof(SCREEN_DEVICE_EXTENSION));
DeviceExtension->Common.Type = ScreenFDO;
DeviceExtension->Common.LowerDevice = LowerDevice;
DeviceExtension->Green = ((PGREEN_DRIVER_EXTENSION)IoGetDriverObjectExtension(DriverObject, DriverObject))->GreenMainDO;
((PGREEN_DEVICE_EXTENSION)DeviceExtension->Green->DeviceExtension)->ScreenFdo = Fdo;
DeviceExtension->PreviousBlue = PreviousBlue;
IoAttachDeviceToDeviceStack(PassThroughFdo ? PassThroughFdo : Fdo, Pdo);
/* initialize screen */
DeviceExtension->Columns = 80;
DeviceExtension->Rows = 25;
DeviceExtension->ScanLines = 16;
DeviceExtension->VideoMemory = (PUCHAR)ExAllocatePool(
PagedPool,
2 * DeviceExtension->Columns * DeviceExtension->Rows * sizeof(UCHAR));
if (!DeviceExtension->VideoMemory)
{
DPRINT("ExAllocatePool() failed\n");
Status = STATUS_INSUFFICIENT_RESOURCES;
goto cleanup;
}
DeviceExtension->TabWidth = 8;
/* more initialization */
DeviceExtension->Mode = ENABLE_PROCESSED_OUTPUT |
ENABLE_WRAP_AT_EOL_OUTPUT;
/* initialize screen at next write */
AddToSendBuffer(DeviceExtension, 2, ESC, 'c'); /* reset device */
AddToSendBuffer(DeviceExtension, 4, ESC, '[', '7', 'l'); /* disable line wrap */
AddToSendBuffer(DeviceExtension, 4, ESC, '[', '3', 'g'); /* clear all tabs */
Fdo->Flags |= DO_POWER_PAGABLE;
Fdo->Flags &= ~DO_DEVICE_INITIALIZING;
Status = STATUS_SUCCESS;
cleanup:
if (!NT_SUCCESS(Status))
{
if (DeviceExtension)
ExFreePool(DeviceExtension->VideoMemory);
if (LowerDevice)
IoDetachDevice(LowerDevice);
if (Fdo)
IoDeleteDevice(Fdo);
if (PassThroughFdo)
IoDeleteDevice(PassThroughFdo);
}
return Status;
}
NTSTATUS
ScreenWrite(
IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp)
{
PIO_STACK_LOCATION Stack;
PUCHAR Buffer;
PSCREEN_DEVICE_EXTENSION DeviceExtension;
PDEVICE_OBJECT SerialDevice;
PUCHAR VideoMemory; /* FIXME: is it useful? */
ULONG VideoMemorySize; /* FIXME: is it useful? */
ULONG Columns, Rows;
ULONG CursorX, CursorY;
ULONG i, j;
DPRINT("ScreenWrite() called\n");
Stack = IoGetCurrentIrpStackLocation (Irp);
Buffer = Irp->UserBuffer;
DeviceExtension = (PSCREEN_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
VideoMemory = DeviceExtension->VideoMemory;
SerialDevice = ((PGREEN_DEVICE_EXTENSION)DeviceExtension->Green->DeviceExtension)->Serial;
if (!SerialDevice)
{
DPRINT1("Calling blue\n");
IoSkipCurrentIrpStackLocation(Irp);
return IoCallDriver(DeviceExtension->PreviousBlue, Irp);
}
Columns = DeviceExtension->Columns;
Rows = DeviceExtension->Rows;
CursorX = (DeviceExtension->LogicalOffset / 2) % Columns + 1;
CursorY = (DeviceExtension->LogicalOffset / 2) / Columns + 1;
VideoMemorySize = Columns * Rows * 2 * sizeof(UCHAR);
if (!(DeviceExtension->Mode & ENABLE_PROCESSED_OUTPUT))
{
/* raw output mode */
CHECKPOINT;
Irp->IoStatus.Status = STATUS_NOT_SUPPORTED;
IoCompleteRequest (Irp, IO_NO_INCREMENT);
return STATUS_NOT_SUPPORTED;
}
else
{
for (i = 0; i < Stack->Parameters.Write.Length; i++, Buffer++)
{
switch (*Buffer)
{
case '\b':
{
if (CursorX > 1)
{
CursorX--;
AddToSendBuffer(DeviceExtension, 6, ESC, '[', -(int)CursorY, ';', -(int)CursorX, 'H');
AddToSendBuffer(DeviceExtension, 1, ' ');
AddToSendBuffer(DeviceExtension, 6, ESC, '[', -(int)CursorY, ';', -(int)CursorX, 'H');
}
else if (CursorY > 1)
{
CursorX = Columns;
CursorY--;
AddToSendBuffer(DeviceExtension, 6, ESC, '[', -(int)CursorY, ';', -(int)CursorX, 'H');
}
break;
}
case '\n':
{
CursorY++;
CursorX = 1;
AddToSendBuffer(DeviceExtension, 1, '\n');
AddToSendBuffer(DeviceExtension, 6, ESC, '[', -(int)CursorY, ';', '1', 'H');
break;
}
case '\r':
{
if (CursorX > 1)
{
AddToSendBuffer(DeviceExtension, 4, ESC, '[', -(int)(CursorX-1), 'D');
CursorX = 1;
}
break;
}
case '\t':
{
ULONG Offset = DeviceExtension->TabWidth - (CursorX % DeviceExtension->TabWidth);
for (j = 0; j < Offset; j++)
{
#ifdef FORCE_POSITION
AddToSendBuffer(DeviceExtension, 6, ESC, '[', -(int)CursorY, ';', -(int)CursorX, 'H');
#endif
AddToSendBuffer(DeviceExtension, 1, ' ');
CursorX++;
if (CursorX > Columns)
{
CursorX = 1;
CursorY++;
}
}
break;
}
default:
{
#ifdef FORCE_POSITION
AddToSendBuffer(DeviceExtension, 6, ESC, '[', -(int)CursorY, ';', -(int)CursorX, 'H');
#endif
AddToSendBuffer(DeviceExtension, 1, *Buffer);
CursorX++;
if (CursorX > Columns)
{
CursorX = 1;
DPRINT("Y: %lu -> %lu\n", CursorY, CursorY + 1);
CursorY++;
AddToSendBuffer(DeviceExtension, 6, ESC, '[', -(int)CursorY, ';', '1', 'H');
}
}
}
if (CursorY >= Rows)
{
DPRINT("Y: %lu -> %lu\n", CursorY, CursorY - 1);
CursorY--;
AddToSendBuffer(DeviceExtension, 6, ESC, '[', -(int)1, ';', -(int)(Rows), 'r');
AddToSendBuffer(DeviceExtension, 2, ESC, 'D');
AddToSendBuffer(DeviceExtension, 6, ESC, '[', -(int)CursorY, ';', -(int)CursorX, 'H');
}
}
}
DeviceExtension->LogicalOffset = ((CursorX-1) + (CursorY-1) * Columns) * 2;
/* flush output buffer */
AddToSendBuffer(DeviceExtension, 0);
/* Call lower driver */
IoSkipCurrentIrpStackLocation(Irp);
return IoCallDriver(DeviceExtension->Common.LowerDevice, Irp);
}
NTSTATUS
ScreenDeviceControl(
IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp)
{
PIO_STACK_LOCATION Stack;
PSCREEN_DEVICE_EXTENSION DeviceExtension;
PDEVICE_OBJECT SerialDevice;
NTSTATUS Status;
Stack = IoGetCurrentIrpStackLocation(Irp);
DeviceExtension = (PSCREEN_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
SerialDevice = ((PGREEN_DEVICE_EXTENSION)DeviceExtension->Green->DeviceExtension)->Serial;
if (!SerialDevice)
{
DPRINT1("Calling blue\n");
IoSkipCurrentIrpStackLocation(Irp);
return IoCallDriver(DeviceExtension->PreviousBlue, Irp);
}
switch (Stack->Parameters.DeviceIoControl.IoControlCode)
{
#if 0
case IOCTL_CONSOLE_GET_SCREEN_BUFFER_INFO:
{
PCONSOLE_SCREEN_BUFFER_INFO pcsbi;
DPRINT("IRP_MJ_DEVICE_CONTROL / IOCTL_CONSOLE_GET_SCREEN_BUFFER_INFO\n");
pcsbi = (PCONSOLE_SCREEN_BUFFER_INFO)Irp->AssociatedIrp.SystemBuffer;
pcsbi->dwSize.X = DeviceExtension->Columns;
pcsbi->dwSize.Y = DeviceExtension->Rows;
pcsbi->dwCursorPosition.X = (SHORT)(DeviceExtension->LogicalOffset % DeviceExtension->Columns);
pcsbi->dwCursorPosition.Y = (SHORT)(DeviceExtension->LogicalOffset / DeviceExtension->Columns);
pcsbi->wAttributes = DeviceExtension->CharAttribute;
pcsbi->srWindow.Left = 1;
pcsbi->srWindow.Right = DeviceExtension->Columns;
pcsbi->srWindow.Top = 1;
pcsbi->srWindow.Bottom = DeviceExtension->Rows;
pcsbi->dwMaximumWindowSize.X = DeviceExtension->Columns;
pcsbi->dwMaximumWindowSize.Y = DeviceExtension->Rows;
Irp->IoStatus.Information = sizeof(CONSOLE_SCREEN_BUFFER_INFO);
Status = STATUS_SUCCESS;
break;
}
case IOCTL_CONSOLE_SET_SCREEN_BUFFER_INFO:
{
PCONSOLE_SCREEN_BUFFER_INFO pcsbi;
DPRINT("IRP_MJ_DEVICE_CONTROL / IOCTL_CONSOLE_SET_SCREEN_BUFFER_INFO\n");
pcsbi = (PCONSOLE_SCREEN_BUFFER_INFO)Irp->AssociatedIrp.SystemBuffer;
/* FIXME: remove */ { pcsbi->dwCursorPosition.X++; }
/* FIXME: remove */ { pcsbi->dwCursorPosition.Y++; }
ASSERT(pcsbi->dwCursorPosition.X >= 1);
ASSERT(pcsbi->dwCursorPosition.Y >= 1);
ASSERT(pcsbi->dwCursorPosition.X <= DeviceExtension->Columns);
ASSERT(pcsbi->dwCursorPosition.Y <= DeviceExtension->Rows);
DeviceExtension->LogicalOffset = (
(pcsbi->dwCursorPosition.Y-1) * DeviceExtension->Columns +
(pcsbi->dwCursorPosition.X-1)) * 2;
AddToSendBuffer(DeviceExtension, 6, ESC, '[',
-(int)pcsbi->dwCursorPosition.Y, ';',
-(int)pcsbi->dwCursorPosition.X, 'H');
/* flush buffer */
AddToSendBuffer(DeviceExtension, 0);
DeviceExtension->CharAttribute = pcsbi->wAttributes;
Irp->IoStatus.Information = 0;
Status = STATUS_SUCCESS;
break;
}
case IOCTL_CONSOLE_GET_CURSOR_INFO:
{
PCONSOLE_CURSOR_INFO pcci = (PCONSOLE_CURSOR_INFO)Irp->AssociatedIrp.SystemBuffer;
DPRINT("IRP_MJ_DEVICE_CONTROL / IOCTL_CONSOLE_GET_CURSOR_INFO\n");
pcci->dwSize = 1;
pcci->bVisible = TRUE;
Irp->IoStatus.Information = sizeof (CONSOLE_CURSOR_INFO);
Status = STATUS_SUCCESS;
break;
}
case IOCTL_CONSOLE_GET_MODE:
{
PCONSOLE_MODE pcm = (PCONSOLE_MODE)Irp->AssociatedIrp.SystemBuffer;
DPRINT("IRP_MJ_DEVICE_CONTROL / IOCTL_CONSOLE_GET_MODE\n");
pcm->dwMode = DeviceExtension->Mode;
Irp->IoStatus.Information = sizeof(CONSOLE_MODE);
Status = STATUS_SUCCESS;
break;
}
case IOCTL_CONSOLE_SET_MODE:
{
PCONSOLE_MODE pcm = (PCONSOLE_MODE)Irp->AssociatedIrp.SystemBuffer;
DPRINT("IRP_MJ_DEVICE_CONTROL / IOCTL_CONSOLE_SET_MODE\n");
DeviceExtension->Mode = pcm->dwMode;
Irp->IoStatus.Information = 0;
Status = STATUS_SUCCESS;
break;
}
case IOCTL_CONSOLE_FILL_OUTPUT_ATTRIBUTE:
{
DPRINT1("IRP_MJ_DEVICE_CONTROL / IOCTL_CONSOLE_FILL_OUTPUT_ATTRIBUTE\n");
Status = STATUS_NOT_IMPLEMENTED; /* FIXME: IOCTL_CONSOLE_FILL_OUTPUT_ATTRIBUTE */
break;
}
case IOCTL_CONSOLE_READ_OUTPUT_ATTRIBUTE:
{
DPRINT1("IRP_MJ_DEVICE_CONTROL / IOCTL_CONSOLE_READ_OUTPUT_ATTRIBUTE\n");
Status = STATUS_NOT_IMPLEMENTED; /* FIXME: IOCTL_CONSOLE_READ_OUTPUT_ATTRIBUTE */
break;
}
case IOCTL_CONSOLE_WRITE_OUTPUT_ATTRIBUTE:
{
DPRINT1("IRP_MJ_DEVICE_CONTROL / IOCTL_CONSOLE_WRITE_OUTPUT_ATTRIBUTE\n");
Status = STATUS_NOT_IMPLEMENTED; /* FIXME: IOCTL_CONSOLE_WRITE_OUTPUT_ATTRIBUTE */
break;
}
case IOCTL_CONSOLE_SET_TEXT_ATTRIBUTE:
{
DPRINT("IRP_MJ_DEVICE_CONTROL / IOCTL_CONSOLE_SET_TEXT_ATTRIBUTE\n");
DeviceExtension->CharAttribute = (WORD)*(PWORD)Irp->AssociatedIrp.SystemBuffer;
Irp->IoStatus.Information = 0;
Status = STATUS_SUCCESS;
break;
}
case IOCTL_CONSOLE_FILL_OUTPUT_CHARACTER:
{
DPRINT1("IRP_MJ_DEVICE_CONTROL / IOCTL_CONSOLE_FILL_OUTPUT_CHARACTER\n");
Status = STATUS_NOT_IMPLEMENTED; /* FIXME:IOCTL_CONSOLE_FILL_OUTPUT_CHARACTER */
break;
}
case IOCTL_CONSOLE_READ_OUTPUT_CHARACTER:
{
DPRINT1("IRP_MJ_DEVICE_CONTROL / IOCTL_CONSOLE_READ_OUTPUT_CHARACTER\n");
Status = STATUS_NOT_IMPLEMENTED; /* FIXME: IOCTL_CONSOLE_READ_OUTPUT_CHARACTER */
break;
}
case IOCTL_CONSOLE_WRITE_OUTPUT_CHARACTER:
{
DPRINT1("IRP_MJ_DEVICE_CONTROL / IOCTL_CONSOLE_WRITE_OUTPUT_CHARACTER\n");
Status = STATUS_NOT_IMPLEMENTED; /* FIXME: IOCTL_CONSOLE_WRITE_OUTPUT_CHARACTER */
break;
}
case IOCTL_CONSOLE_DRAW:
{
PCONSOLE_DRAW ConsoleDraw;
PUCHAR Video;
ULONG x, y;
BOOLEAN DoOptimization = FALSE;
DPRINT("IRP_MJ_DEVICE_CONTROL / IOCTL_CONSOLE_DRAW\n");
ConsoleDraw = (PCONSOLE_DRAW)MmGetSystemAddressForMdl(Irp->MdlAddress);
/* FIXME: remove */ { ConsoleDraw->X++; ConsoleDraw->CursorX++; }
/* FIXME: remove */ { ConsoleDraw->Y++; ConsoleDraw->CursorY++; }
DPRINT1("%lu %lu %lu %lu\n",
ConsoleDraw->X, ConsoleDraw->Y,
ConsoleDraw->SizeX, ConsoleDraw->SizeY);
ASSERT(ConsoleDraw->X >= 1);
ASSERT(ConsoleDraw->Y >= 1);
ASSERT(ConsoleDraw->X <= DeviceExtension->Columns);
ASSERT(ConsoleDraw->Y <= DeviceExtension->Rows);
ASSERT(ConsoleDraw->X + ConsoleDraw->SizeX >= 1);
ASSERT(ConsoleDraw->Y + ConsoleDraw->SizeY >= 1);
ASSERT(ConsoleDraw->X + ConsoleDraw->SizeX - 1 <= DeviceExtension->Columns);
ASSERT(ConsoleDraw->Y + ConsoleDraw->SizeY - 1 <= DeviceExtension->Rows);
ASSERT(ConsoleDraw->CursorX >= 1);
ASSERT(ConsoleDraw->CursorY >= 1);
ASSERT(ConsoleDraw->CursorX <= DeviceExtension->Columns);
ASSERT(ConsoleDraw->CursorY <= DeviceExtension->Rows);
#if 0
if (ConsoleDraw->X == 1
&& ConsoleDraw->Y == 1
&& ConsoleDraw->SizeX == DeviceExtension->Columns
&& ConsoleDraw->SizeY == DeviceExtension->Rows)
{
CHECKPOINT1;
/* search if we need to clear all screen */
DoOptimization = TRUE;
Video = (PUCHAR)(ConsoleDraw + 1);
x = 0;
while (DoOptimization && x < DeviceExtension->Columns * DeviceExtension->Rows)
{
if (Video[x++] != ' ')
{
CHECKPOINT1;
DoOptimization = FALSE;
}
/*if (Video[x++] != DeviceExtension->CharAttribute) DoOptimization = FALSE; */
}
if (DoOptimization)
{
CHECKPOINT1;
AddToSendBuffer(DeviceExtension, 4, ESC, '[', '2', 'J');
}
}
#endif
/* add here more optimizations if needed */
if (!DoOptimization)
{
for (y = 0; y < ConsoleDraw->SizeY; y++)
{
AddToSendBuffer(DeviceExtension, 6, ESC, '[',
-(int)(ConsoleDraw->Y + y), ';',
-(int)(ConsoleDraw->X), 'H');
Video = (PUCHAR)(ConsoleDraw + 1);
Video = &Video[((ConsoleDraw->Y + y) * /*DeviceExtension->Columns +*/ ConsoleDraw->X) * 2];
for (x = 0; x < ConsoleDraw->SizeX; x++)
{
AddToSendBuffer(DeviceExtension, 1, Video[x * 2]);
}
}
}
DeviceExtension->LogicalOffset = (
(ConsoleDraw->CursorY-1) * DeviceExtension->Columns +
(ConsoleDraw->CursorX-1)) * 2;
AddToSendBuffer(DeviceExtension, 6, ESC, '[',
-(int)(ConsoleDraw->CursorY), ';',
-(int)(ConsoleDraw->CursorX), 'H');
/* flush buffer */
AddToSendBuffer(DeviceExtension, 0);
Irp->IoStatus.Information = 0;
Status = STATUS_SUCCESS;
break;
}
#endif
default:
{
DPRINT1("IRP_MJ_DEVICE_CONTROL / unknown ioctl code 0x%lx\n",
Stack->Parameters.DeviceIoControl.IoControlCode);
/* Call lower driver */
IoSkipCurrentIrpStackLocation(Irp);
return IoCallDriver(DeviceExtension->Common.LowerDevice, Irp);
}
}
if (!NT_SUCCESS(Status))
{
/* Don't call blue (if any), as we encountered an error */
Irp->IoStatus.Status = Status;
IoCompleteRequest(Irp, IO_NO_INCREMENT);
return Status;
}
else
{
/* Call lower driver */
IoSkipCurrentIrpStackLocation(Irp);
return IoCallDriver(DeviceExtension->Common.LowerDevice, Irp);
}
}
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