[reactos] 01/04: [BLUE] Add an IOCTL to directly choose which font to use (instead of codepage)

[Hervé Poussineau]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=aaa416d36afafb0e44ec3…

commit aaa416d36afafb0e44ec3deccd235bdf5f2f61c1
Author:     Hervé Poussineau <hpoussin(a)reactos.org>
AuthorDate: Sat Apr 25 21:34:16 2020 +0200
Commit:     Hervé Poussineau <hpoussin(a)reactos.org>
CommitDate: Sun Apr 26 14:54:09 2020 +0200

    [BLUE] Add an IOCTL to directly choose which font to use (instead of codepage)
---
 drivers/setup/blue/blue.c                   | 53 +++++++++++++++++++++++++++--
 drivers/setup/blue/blue.h                   |  1 +
 drivers/setup/blue/font.c                   | 22 ++++++++++++
 sdk/include/reactos/drivers/blue/ntddblue.h |  1 +
 4 files changed, 75 insertions(+), 2 deletions(-)

diff --git a/drivers/setup/blue/blue.c b/drivers/setup/blue/blue.c
index def5049fa32..1a911689cef 100644
--- a/drivers/setup/blue/blue.c
+++ b/drivers/setup/blue/blue.c
@@ -38,6 +38,7 @@ typedef struct _DEVICE_EXTENSION
     USHORT  Rows;       /* Number of rows        */
     USHORT  Columns;    /* Number of columns     */
     USHORT  CursorX, CursorY; /* Cursor position */
+    PUCHAR  FontBitfield; /* Specifies the font. If NULL, use CodePage */
     ULONG   CodePage;   /* Specifies the font associated to this code page */
 } DEVICE_EXTENSION, *PDEVICE_EXTENSION;
 
@@ -483,8 +484,15 @@ ScrAcquireOwnership(
     // DeviceExtension->CursorX = min(max(DeviceExtension->CursorX, 0),
DeviceExtension->Columns - 1);
     DeviceExtension->CursorY = min(max(DeviceExtension->CursorY, 0),
DeviceExtension->Rows - 1);
 
-    /* Upload a default font for the current codepage */
-    ScrLoadFontTable(DeviceExtension->CodePage);
+    if (DeviceExtension->FontBitfield)
+    {
+        ScrSetFont(DeviceExtension->FontBitfield);
+    }
+    else
+    {
+        /* Upload a default font for the current codepage */
+        ScrLoadFontTable(DeviceExtension->CodePage);
+    }
 
     DPRINT("%d Columns  %d Rows %d Scanlines\n",
            DeviceExtension->Columns,
@@ -511,6 +519,12 @@ ScrResetScreen(
         DeviceExtension->CursorSize    = 5; /* FIXME: value correct?? */
         DeviceExtension->CursorVisible = TRUE;
 
+        if (DeviceExtension->FontBitfield)
+        {
+            ExFreePoolWithTag(DeviceExtension->FontBitfield, TAG_BLUE);
+            DeviceExtension->FontBitfield = NULL;
+        }
+
         /* More initialization */
         DeviceExtension->CharAttribute = BACKGROUND_BLUE | FOREGROUND_LIGHTGRAY;
         DeviceExtension->Mode = ENABLE_PROCESSED_OUTPUT |
@@ -1496,6 +1510,11 @@ ScrIoControl(
             }
             ASSERT(Irp->AssociatedIrp.SystemBuffer);
 
+            if (DeviceExtension->FontBitfield)
+            {
+                ExFreePoolWithTag(DeviceExtension->FontBitfield, TAG_BLUE);
+                DeviceExtension->FontBitfield = NULL;
+            }
             DeviceExtension->CodePage = *(PULONG)Irp->AssociatedIrp.SystemBuffer;
 
             /* Upload a font for the codepage if needed */
@@ -1507,6 +1526,36 @@ ScrIoControl(
             break;
         }
 
+        case IOCTL_CONSOLE_SETFONT:
+        {
+            /* Validate input buffer */
+            if (stk->Parameters.DeviceIoControl.InputBufferLength < 256 * 8)
+            {
+                Status = STATUS_INVALID_PARAMETER;
+                break;
+            }
+            ASSERT(Irp->AssociatedIrp.SystemBuffer);
+
+            DeviceExtension->CodePage = 0;
+            if (DeviceExtension->FontBitfield)
+                ExFreePoolWithTag(DeviceExtension->FontBitfield, TAG_BLUE);
+            DeviceExtension->FontBitfield = ExAllocatePoolWithTag(NonPagedPool, 256 *
8, TAG_BLUE);
+            if (!DeviceExtension->FontBitfield)
+            {
+                Status = STATUS_NO_MEMORY;
+                break;
+            }
+            RtlCopyMemory(DeviceExtension->FontBitfield,
Irp->AssociatedIrp.SystemBuffer, 256 * 8);
+
+            /* Upload the font if needed */
+            if (DeviceExtension->Enabled && DeviceExtension->VideoMemory)
+                ScrSetFont(DeviceExtension->FontBitfield);
+
+            Irp->IoStatus.Information = 0;
+            Status = STATUS_SUCCESS;
+            break;
+        }
+
         default:
             Status = STATUS_NOT_IMPLEMENTED;
     }
diff --git a/drivers/setup/blue/blue.h b/drivers/setup/blue/blue.h
index 335313abe15..3a3af7a4511 100644
--- a/drivers/setup/blue/blue.h
+++ b/drivers/setup/blue/blue.h
@@ -145,5 +145,6 @@ typedef struct _CFFILE
 #define PELDATA      (PUCHAR)0x3c9
 
 VOID ScrLoadFontTable(_In_ ULONG CodePage);
+VOID ScrSetFont(_In_ PUCHAR FontBitfield);
 
 #endif /* _BLUE_PCH_ */
diff --git a/drivers/setup/blue/font.c b/drivers/setup/blue/font.c
index 11f2438dd73..69b3651c49d 100644
--- a/drivers/setup/blue/font.c
+++ b/drivers/setup/blue/font.c
@@ -62,6 +62,28 @@ ScrLoadFontTable(
     CloseBitPlane();
 }
 
+VOID
+ScrSetFont(
+    _In_ PUCHAR FontBitfield)
+{
+    PHYSICAL_ADDRESS BaseAddress;
+    PUCHAR Bitplane;
+
+    /* open bit plane for font table access */
+    OpenBitPlane();
+
+    /* get pointer to video memory */
+    BaseAddress.QuadPart = BITPLANE_BASE;
+    Bitplane = (PUCHAR)MmMapIoSpace(BaseAddress, 0xFFFF, MmNonCached);
+
+    LoadFont(Bitplane, FontBitfield);
+
+    MmUnmapIoSpace(Bitplane, 0xFFFF);
+
+    /* close bit plane */
+    CloseBitPlane();
+}
+
 /* PRIVATE FUNCTIONS *********************************************************/
 
 NTSTATUS
diff --git a/sdk/include/reactos/drivers/blue/ntddblue.h
b/sdk/include/reactos/drivers/blue/ntddblue.h
index 0d41d0f158d..1c6d22e5008 100644
--- a/sdk/include/reactos/drivers/blue/ntddblue.h
+++ b/sdk/include/reactos/drivers/blue/ntddblue.h
@@ -22,6 +22,7 @@
 #define IOCTL_CONSOLE_DRAW                      CTL_CODE(FILE_DEVICE_SCREEN, 0x830,
METHOD_IN_DIRECT, FILE_WRITE_ACCESS)
 
 #define IOCTL_CONSOLE_LOADFONT                  CTL_CODE(FILE_DEVICE_SCREEN, 0x840,
METHOD_IN_DIRECT, FILE_WRITE_ACCESS)
+#define IOCTL_CONSOLE_SETFONT                   CTL_CODE(FILE_DEVICE_SCREEN, 0x841,
METHOD_IN_DIRECT, FILE_WRITE_ACCESS)
 
 /* TYPEDEFS **************************************************************/