Start source tree (final, I hope!) restructuration. Part 1/X

[reactos.git] / reactos / win32ss / drivers / displays / vga / objects / offscreen.c

diff --git a/reactos/win32ss/drivers/displays/vga/objects/offscreen.c b/reactos/win32ss/drivers/displays/vga/objects/offscreen.c
deleted file mode 100644 (file)
index 864ae8c..0000000
--- a/reactos/win32ss/drivers/displays/vga/objects/offscreen.c
+++ /dev/null
@@ -1,177 +0,0 @@
-/*
- * PROJECT:         ReactOS VGA display driver
- * LICENSE:         GPL - See COPYING in the top level directory
- * FILE:            drivers/video/displays/vga/objects/offscreen.c
- * PURPOSE:         Manages off-screen video memory
- * PROGRAMMERS:     Copyright (C) 1998-2001 ReactOS Team
- */
-
-/* INCLUDES ******************************************************************/
-
-#include <vgaddi.h>
-
-/* GLOBALS *******************************************************************/
-
-static LIST_ENTRY SavedBitsList;
-
-/* FUNCTIONS *****************************************************************/
-
-VOID
-VGADDI_BltFromSavedScreenBits(
-    IN ULONG DestX,
-    IN ULONG DestY,
-    IN PSAVED_SCREEN_BITS Src,
-    IN ULONG SizeX,
-    IN ULONG SizeY)
-{
-    PUCHAR DestOffset;
-    PUCHAR SrcOffset;
-    ULONG i, j;
-
-    /* Select write mode 1. */
-    WRITE_PORT_UCHAR((PUCHAR)GRA_I, 5);
-    WRITE_PORT_UCHAR((PUCHAR)GRA_D, 1);
-
-    SrcOffset = (PUCHAR)vidmem + Src->Offset;
-    for (i = 0; i < SizeY; i++)
-    {
-        DestOffset = (PUCHAR)vidmem + (i + DestY) * 80 + (DestX >> 3);
-        //FIXME: in the loop below we should treat the case when SizeX is not divisible by 8, i.e. partial bytes
-        for (j = 0; j < SizeX>>3; j++, SrcOffset++, DestOffset++)
-        {
-            (VOID)READ_REGISTER_UCHAR(SrcOffset);
-            WRITE_REGISTER_UCHAR(DestOffset, 0);
-        }
-    }
-
-    /* Select write mode 2. */
-    WRITE_PORT_UCHAR((PUCHAR)GRA_I, 5);
-    WRITE_PORT_UCHAR((PUCHAR)GRA_D, 2);
-}
-
-VOID
-VGADDI_BltToSavedScreenBits(
-    IN PSAVED_SCREEN_BITS Dest,
-    IN ULONG SourceX,
-    IN ULONG SourceY,
-    IN ULONG SizeX,
-    IN ULONG SizeY)
-{
-    PUCHAR DestOffset;
-    PUCHAR SrcOffset;
-    ULONG i, j;
-
-    /* Select write mode 1. */
-    WRITE_PORT_UCHAR((PUCHAR)GRA_I, 5);
-    WRITE_PORT_UCHAR((PUCHAR)GRA_D, 1);
-
-    DestOffset = (PUCHAR)vidmem + Dest->Offset;
-
-    for (i = 0; i < SizeY; i++)
-    {
-        SrcOffset = (PUCHAR)vidmem + (SourceY + i) * 80 + (SourceX >> 3);
-        //FIXME: in the loop below we should treat the case when SizeX is not divisible by 8, i.e. partial bytes
-        for (j = 0; j < SizeX>>3; j++, SrcOffset++, DestOffset++)
-        {
-            (VOID)READ_REGISTER_UCHAR(SrcOffset);
-            WRITE_REGISTER_UCHAR(DestOffset, 0);
-        }
-    }
-
-    /* Select write mode 2. */
-    WRITE_PORT_UCHAR((PUCHAR)GRA_I, 5);
-    WRITE_PORT_UCHAR((PUCHAR)GRA_D, 2);
-}
-
-VOID
-VGADDI_FreeSavedScreenBits(PSAVED_SCREEN_BITS SavedBits)
-{
-    SavedBits->Free = TRUE;
-
-    if (SavedBits->ListEntry.Blink != &SavedBitsList)
-    {
-        PSAVED_SCREEN_BITS Previous;
-
-        Previous = CONTAINING_RECORD(SavedBits->ListEntry.Blink,
-                                     SAVED_SCREEN_BITS, ListEntry);
-        if (Previous->Free)
-        {
-            Previous->Size += SavedBits->Size;
-            RemoveEntryList(&SavedBits->ListEntry);
-            EngFreeMem(SavedBits);
-            SavedBits = Previous;
-        }
-    }
-    if (SavedBits->ListEntry.Flink != &SavedBitsList)
-    {
-        PSAVED_SCREEN_BITS Next;
-
-        Next = CONTAINING_RECORD(SavedBits->ListEntry.Flink, SAVED_SCREEN_BITS,
-                                 ListEntry);
-        if (Next->Free)
-        {
-            SavedBits->Size += Next->Size;
-            RemoveEntryList(&SavedBits->ListEntry);
-            EngFreeMem(SavedBits);
-        }
-    }
-}
-
-PSAVED_SCREEN_BITS
-VGADDI_AllocSavedScreenBits(ULONG Size)
-{
-    PSAVED_SCREEN_BITS Current;
-    PLIST_ENTRY CurrentEntry;
-    PSAVED_SCREEN_BITS Best;
-    PSAVED_SCREEN_BITS New;
-
-    Best = NULL;
-    CurrentEntry = SavedBitsList.Flink;
-    while (CurrentEntry != &SavedBitsList)
-    {
-        Current = CONTAINING_RECORD(CurrentEntry, SAVED_SCREEN_BITS, ListEntry);
-
-        if (Current->Free && Current->Size >= Size &&
-            (Best == NULL || (Current->Size - Size) < (Best->Size - Size)))
-        {
-            Best = Current;
-        }
-
-        CurrentEntry = CurrentEntry->Flink;
-    }
-
-    if (!Best)
-      return NULL;
-
-    if (Best->Size == Size)
-    {
-        Best->Free = FALSE;
-        return Best;
-    }
-    else
-    {
-        New = EngAllocMem(0, sizeof(SAVED_SCREEN_BITS), ALLOC_TAG);
-        New->Free = FALSE;
-        New->Offset = Best->Offset + Size;
-        New->Size = Size;
-        Best->Size -= Size;
-        InsertHeadList(&Best->ListEntry, &New->ListEntry);
-        return New;
-    }
-}
-
-VOID
-VGADDI_InitializeOffScreenMem(
-    IN ULONG Start,
-    IN ULONG Length)
-{
-    PSAVED_SCREEN_BITS FreeBits;
-
-    InitializeListHead(&SavedBitsList);
-
-    FreeBits = EngAllocMem(0, sizeof(SAVED_SCREEN_BITS), ALLOC_TAG);
-    FreeBits->Free = TRUE;
-    FreeBits->Offset = Start;
-    FreeBits->Size = Length;
-    InsertHeadList(&SavedBitsList, &FreeBits->ListEntry);
-}