reactos/ntoskrnl/inbv/bootanim.c
Hermès Bélusca-Maïto f7e8214b55
[NTOS:INBV] Code refactoring: Move all the boot animation-specific code out of inbv.c and into the new bootanim.c file.
- inbv.c now only contains the Inbv-specific API and nothing else.

- It will make easier for people to write their own boot themes & animations,
  by just copying/adapting the bootanim.c file (and the resources).

- Add SAL annotations.

- All INBV progress bar functions (except for InbvIndicateProgress())
  should not be INIT-only functions, since they can be (not yet in ROS)
  used at later times -- namely, for feedback during hibernation.
2022-02-13 21:29:14 +01:00

771 lines
22 KiB
C

/*
* PROJECT: ReactOS Kernel
* LICENSE: GPL-2.0-or-later (https://spdx.org/licenses/GPL-2.0-or-later)
* PURPOSE: Boot Theme & Animation
* COPYRIGHT: Copyright 2007 Alex Ionescu (alex.ionescu@reactos.org)
* Copyright 2007 Hervé Poussineau (hpoussin@reactos.org)
* Copyright 2012-2022 Hermès Bélusca-Maïto
* Copyright 2017-2018 Stanislav Motylkov
* Copyright 2019-2020 Yaroslav Kibysh
*/
/* INCLUDES ******************************************************************/
#include <ntoskrnl.h>
#include "inbv/logo.h"
/* See also mm/ARM3/miarm.h */
#define MM_READONLY 1 // PAGE_READONLY
#define MM_READWRITE 4 // PAGE_WRITECOPY
/* GLOBALS *******************************************************************/
/*
* ReactOS uses the same boot screen for all the products.
*
* Enable this define when ReactOS will have different SKUs
* (Workstation, Server, Storage Server, Cluster Server, etc...).
*/
// #define REACTOS_SKUS
typedef enum _ROT_BAR_TYPE
{
RB_UNSPECIFIED,
RB_SQUARE_CELLS,
RB_PROGRESS_BAR
} ROT_BAR_TYPE;
/*
* BitBltAligned() alignments
*/
typedef enum _BBLT_VERT_ALIGNMENT
{
AL_VERTICAL_TOP = 0,
AL_VERTICAL_CENTER,
AL_VERTICAL_BOTTOM
} BBLT_VERT_ALIGNMENT;
typedef enum _BBLT_HORZ_ALIGNMENT
{
AL_HORIZONTAL_LEFT = 0,
AL_HORIZONTAL_CENTER,
AL_HORIZONTAL_RIGHT
} BBLT_HORZ_ALIGNMENT;
/*
* Enable this define when Inbv will support rotating progress bar.
*/
#define INBV_ROTBAR_IMPLEMENTED
extern ULONG ProgressBarLeft, ProgressBarTop;
extern BOOLEAN ShowProgressBar;
#ifdef INBV_ROTBAR_IMPLEMENTED
/*
* Change this to modify progress bar behaviour
*/
#define ROT_BAR_DEFAULT_MODE RB_PROGRESS_BAR
/*
* Values for PltRotBarStatus:
* - PltRotBarStatus == 1, do palette fading-in (done elsewhere in ReactOS);
* - PltRotBarStatus == 2, do rotation bar animation;
* - PltRotBarStatus == 3, stop the animation thread.
* - Any other value is ignored and the animation thread continues to run.
*/
typedef enum _ROT_BAR_STATUS
{
RBS_FADEIN = 1,
RBS_ANIMATE,
RBS_STOP_ANIMATE,
RBS_STATUS_MAX
} ROT_BAR_STATUS;
static BOOLEAN RotBarThreadActive = FALSE;
static ROT_BAR_TYPE RotBarSelection = RB_UNSPECIFIED;
static ROT_BAR_STATUS PltRotBarStatus = 0;
static UCHAR RotBarBuffer[24 * 9];
static UCHAR RotLineBuffer[SCREEN_WIDTH * 6];
#endif
/* FADE-IN FUNCTION **********************************************************/
/** From include/psdk/wingdi.h and bootvid/precomp.h **/
typedef struct tagRGBQUAD
{
UCHAR rgbBlue;
UCHAR rgbGreen;
UCHAR rgbRed;
UCHAR rgbReserved;
} RGBQUAD, *LPRGBQUAD;
//
// Bitmap Header
//
typedef struct tagBITMAPINFOHEADER
{
ULONG biSize;
LONG biWidth;
LONG biHeight;
USHORT biPlanes;
USHORT biBitCount;
ULONG biCompression;
ULONG biSizeImage;
LONG biXPelsPerMeter;
LONG biYPelsPerMeter;
ULONG biClrUsed;
ULONG biClrImportant;
} BITMAPINFOHEADER, *PBITMAPINFOHEADER;
/*******************************/
static RGBQUAD MainPalette[16];
#define PALETTE_FADE_STEPS 12
#define PALETTE_FADE_TIME (15 * 1000) /* 15 ms */
static VOID
BootLogoFadeIn(VOID)
{
UCHAR PaletteBitmapBuffer[sizeof(BITMAPINFOHEADER) + sizeof(MainPalette)];
PBITMAPINFOHEADER PaletteBitmap = (PBITMAPINFOHEADER)PaletteBitmapBuffer;
LPRGBQUAD Palette = (LPRGBQUAD)(PaletteBitmapBuffer + sizeof(BITMAPINFOHEADER));
ULONG Iteration, Index, ClrUsed;
LARGE_INTEGER Delay;
Delay.QuadPart = -(PALETTE_FADE_TIME * 10);
/* Check if we are installed and we own the display */
if (!InbvBootDriverInstalled ||
(InbvGetDisplayState() != INBV_DISPLAY_STATE_OWNED))
{
return;
}
/*
* Build a bitmap containing the fade-in palette. The palette entries
* are then processed in a loop and set using VidBitBlt function.
*/
ClrUsed = RTL_NUMBER_OF(MainPalette);
RtlZeroMemory(PaletteBitmap, sizeof(BITMAPINFOHEADER));
PaletteBitmap->biSize = sizeof(BITMAPINFOHEADER);
PaletteBitmap->biBitCount = 4;
PaletteBitmap->biClrUsed = ClrUsed;
/*
* Main animation loop.
*/
for (Iteration = 0; Iteration <= PALETTE_FADE_STEPS; ++Iteration)
{
for (Index = 0; Index < ClrUsed; Index++)
{
Palette[Index].rgbRed = (UCHAR)
(MainPalette[Index].rgbRed * Iteration / PALETTE_FADE_STEPS);
Palette[Index].rgbGreen = (UCHAR)
(MainPalette[Index].rgbGreen * Iteration / PALETTE_FADE_STEPS);
Palette[Index].rgbBlue = (UCHAR)
(MainPalette[Index].rgbBlue * Iteration / PALETTE_FADE_STEPS);
}
/* Do the animation */
InbvAcquireLock();
VidBitBlt(PaletteBitmapBuffer, 0, 0);
InbvReleaseLock();
/* Wait for a bit */
KeDelayExecutionThread(KernelMode, FALSE, &Delay);
}
}
static VOID
BitBltPalette(
IN PVOID Image,
IN BOOLEAN NoPalette,
IN ULONG X,
IN ULONG Y)
{
LPRGBQUAD Palette;
RGBQUAD OrigPalette[RTL_NUMBER_OF(MainPalette)];
/* If requested, remove the palette from the image */
if (NoPalette)
{
/* Get bitmap header and palette */
PBITMAPINFOHEADER BitmapInfoHeader = Image;
Palette = (LPRGBQUAD)((PUCHAR)Image + BitmapInfoHeader->biSize);
/* Save the image original palette and remove palette information */
RtlCopyMemory(OrigPalette, Palette, sizeof(OrigPalette));
RtlZeroMemory(Palette, sizeof(OrigPalette));
}
/* Draw the image */
InbvBitBlt(Image, X, Y);
/* Restore the image original palette */
if (NoPalette)
{
RtlCopyMemory(Palette, OrigPalette, sizeof(OrigPalette));
}
}
static VOID
BitBltAligned(
IN PVOID Image,
IN BOOLEAN NoPalette,
IN BBLT_HORZ_ALIGNMENT HorizontalAlignment,
IN BBLT_VERT_ALIGNMENT VerticalAlignment,
IN ULONG MarginLeft,
IN ULONG MarginTop,
IN ULONG MarginRight,
IN ULONG MarginBottom)
{
PBITMAPINFOHEADER BitmapInfoHeader = Image;
ULONG X, Y;
/* Calculate X */
switch (HorizontalAlignment)
{
case AL_HORIZONTAL_LEFT:
X = MarginLeft - MarginRight;
break;
case AL_HORIZONTAL_CENTER:
X = MarginLeft - MarginRight + (SCREEN_WIDTH - BitmapInfoHeader->biWidth + 1) / 2;
break;
case AL_HORIZONTAL_RIGHT:
X = MarginLeft - MarginRight + SCREEN_WIDTH - BitmapInfoHeader->biWidth;
break;
default:
/* Unknown */
return;
}
/* Calculate Y */
switch (VerticalAlignment)
{
case AL_VERTICAL_TOP:
Y = MarginTop - MarginBottom;
break;
case AL_VERTICAL_CENTER:
Y = MarginTop - MarginBottom + (SCREEN_HEIGHT - BitmapInfoHeader->biHeight + 1) / 2;
break;
case AL_VERTICAL_BOTTOM:
Y = MarginTop - MarginBottom + SCREEN_HEIGHT - BitmapInfoHeader->biHeight;
break;
default:
/* Unknown */
return;
}
/* Finally draw the image */
BitBltPalette(Image, NoPalette, X, Y);
}
/* FUNCTIONS *****************************************************************/
CODE_SEG("INIT")
BOOLEAN
NTAPI
BootAnimInitialize(
_In_ PLOADER_PARAMETER_BLOCK LoaderBlock,
_In_ ULONG Count)
{
#if 0
ULONG i;
/* Quit if we're already installed */
if (InbvBootDriverInstalled) return TRUE;
/* Find bitmap resources in the kernel */
ResourceCount = min(Count, RTL_NUMBER_OF(ResourceList) - 1);
for (i = 1; i <= ResourceCount; i++)
{
/* Do the lookup */
ResourceList[i] = FindBitmapResource(LoaderBlock, i);
}
/* Set the progress bar ranges */
InbvSetProgressBarSubset(0, 100);
#endif
/* Return install state */
return TRUE;
}
/**
* @brief
* Ticks the progress bar. Used by InbvUpdateProgressBar() and related.
*
* @param[in] SubPercentTimes100
* The progress percentage, scaled up by 100.
*
* @return None.
**/
VOID
NTAPI
BootAnimTickProgressBar(
_In_ ULONG SubPercentTimes100)
{
ULONG FillCount;
/* Make sure the progress bar is enabled, that we own and are installed */
ASSERT(ShowProgressBar &&
InbvBootDriverInstalled &&
(InbvGetDisplayState() == INBV_DISPLAY_STATE_OWNED));
/* Compute fill count */
FillCount = VID_PROGRESS_BAR_WIDTH * SubPercentTimes100 / (100 * 100);
/* Acquire the lock */
InbvAcquireLock();
/* Fill the progress bar */
VidSolidColorFill(ProgressBarLeft,
ProgressBarTop,
ProgressBarLeft + FillCount,
ProgressBarTop + VID_PROGRESS_BAR_HEIGHT,
BV_COLOR_WHITE);
/* Release the lock */
InbvReleaseLock();
}
#ifdef INBV_ROTBAR_IMPLEMENTED
static
VOID
NTAPI
InbvRotationThread(
_In_ PVOID Context)
{
ULONG X, Y, Index, Total;
LARGE_INTEGER Delay = {{0}};
InbvAcquireLock();
if (RotBarSelection == RB_SQUARE_CELLS)
{
Index = 0;
}
else
{
Index = 32;
}
X = ProgressBarLeft + 2;
Y = ProgressBarTop + 2;
InbvReleaseLock();
while (InbvGetDisplayState() == INBV_DISPLAY_STATE_OWNED)
{
/* Wait for a bit */
KeDelayExecutionThread(KernelMode, FALSE, &Delay);
InbvAcquireLock();
/* Unknown unexpected command */
ASSERT(PltRotBarStatus < RBS_STATUS_MAX);
if (PltRotBarStatus == RBS_STOP_ANIMATE)
{
/* Stop the thread */
InbvReleaseLock();
break;
}
if (RotBarSelection == RB_SQUARE_CELLS)
{
Delay.QuadPart = -800000; // 80 ms
Total = 18;
Index %= Total;
if (Index >= 3)
{
/* Fill previous bar position */
VidSolidColorFill(X + ((Index - 3) * 8), Y, (X + ((Index - 3) * 8)) + 8 - 1, Y + 9 - 1, BV_COLOR_BLACK);
}
if (Index < Total - 1)
{
/* Draw the progress bar bit */
if (Index < 2)
{
/* Appearing from the left */
VidBufferToScreenBlt(RotBarBuffer + 8 * (2 - Index) / 2, X, Y, 22 - 8 * (2 - Index), 9, 24);
}
else if (Index >= Total - 3)
{
/* Hiding to the right */
VidBufferToScreenBlt(RotBarBuffer, X + ((Index - 2) * 8), Y, 22 - 8 * (4 - (Total - Index)), 9, 24);
}
else
{
VidBufferToScreenBlt(RotBarBuffer, X + ((Index - 2) * 8), Y, 22, 9, 24);
}
}
Index++;
}
else if (RotBarSelection == RB_PROGRESS_BAR)
{
Delay.QuadPart = -600000; // 60 ms
Total = SCREEN_WIDTH;
Index %= Total;
/* Right part */
VidBufferToScreenBlt(RotLineBuffer, Index, SCREEN_HEIGHT-6, SCREEN_WIDTH - Index, 6, SCREEN_WIDTH);
if (Index > 0)
{
/* Left part */
VidBufferToScreenBlt(RotLineBuffer + (SCREEN_WIDTH - Index) / 2, 0, SCREEN_HEIGHT-6, Index - 2, 6, SCREEN_WIDTH);
}
Index += 32;
}
InbvReleaseLock();
}
PsTerminateSystemThread(STATUS_SUCCESS);
}
CODE_SEG("INIT")
VOID
NTAPI
InbvRotBarInit(VOID)
{
PltRotBarStatus = RBS_FADEIN;
/* Perform other initialization if needed */
}
#endif
CODE_SEG("INIT")
static
VOID
NTAPI
DisplayFilter(
_Inout_ PCHAR* String)
{
/* Windows hack to skip first dots displayed by AUTOCHK */
static BOOLEAN DotHack = TRUE;
/* If "." is given set *String to empty string */
if (DotHack && strcmp(*String, ".") == 0)
*String = "";
if (**String)
{
/* Remove the filter */
InbvInstallDisplayStringFilter(NULL);
DotHack = FALSE;
/* Draw text screen */
DisplayBootBitmap(TRUE);
}
}
CODE_SEG("INIT")
VOID
NTAPI
DisplayBootBitmap(
_In_ BOOLEAN TextMode)
{
PVOID BootCopy = NULL, BootProgress = NULL, BootLogo = NULL, Header = NULL, Footer = NULL;
#ifdef INBV_ROTBAR_IMPLEMENTED
UCHAR Buffer[24 * 9];
PVOID Bar = NULL, LineBmp = NULL;
ROT_BAR_TYPE TempRotBarSelection = RB_UNSPECIFIED;
NTSTATUS Status;
HANDLE ThreadHandle = NULL;
#endif
#ifdef REACTOS_SKUS
PVOID Text = NULL;
#endif
#ifdef INBV_ROTBAR_IMPLEMENTED
/* Check if the animation thread has already been created */
if (RotBarThreadActive)
{
/* Yes, just reset the progress bar but keep the thread alive */
InbvAcquireLock();
RotBarSelection = RB_UNSPECIFIED;
InbvReleaseLock();
}
#endif
ShowProgressBar = FALSE;
/* Check if this is text mode */
if (TextMode)
{
/*
* Make the kernel resource section temporarily writable,
* as we are going to change the bitmaps' palette in place.
*/
MmChangeKernelResourceSectionProtection(MM_READWRITE);
/* Check the type of the OS: workstation or server */
if (SharedUserData->NtProductType == NtProductWinNt)
{
/* Workstation; set colors */
InbvSetTextColor(BV_COLOR_WHITE);
InbvSolidColorFill(0, 0, SCREEN_WIDTH-1, SCREEN_HEIGHT-1, BV_COLOR_DARK_GRAY);
InbvSolidColorFill(0, VID_FOOTER_BG_TOP, SCREEN_WIDTH-1, SCREEN_HEIGHT-1, BV_COLOR_RED);
/* Get resources */
Header = InbvGetResourceAddress(IDB_WKSTA_HEADER);
Footer = InbvGetResourceAddress(IDB_WKSTA_FOOTER);
}
else
{
/* Server; set colors */
InbvSetTextColor(BV_COLOR_LIGHT_CYAN);
InbvSolidColorFill(0, 0, SCREEN_WIDTH-1, SCREEN_HEIGHT-1, BV_COLOR_CYAN);
InbvSolidColorFill(0, VID_FOOTER_BG_TOP, SCREEN_WIDTH-1, SCREEN_HEIGHT-1, BV_COLOR_RED);
/* Get resources */
Header = InbvGetResourceAddress(IDB_SERVER_HEADER);
Footer = InbvGetResourceAddress(IDB_SERVER_FOOTER);
}
/* Set the scrolling region */
InbvSetScrollRegion(VID_SCROLL_AREA_LEFT, VID_SCROLL_AREA_TOP,
VID_SCROLL_AREA_RIGHT, VID_SCROLL_AREA_BOTTOM);
/* Make sure we have resources */
if (Header && Footer)
{
/* BitBlt them on the screen */
BitBltAligned(Footer,
TRUE,
AL_HORIZONTAL_CENTER,
AL_VERTICAL_BOTTOM,
0, 0, 0, 59);
BitBltAligned(Header,
FALSE,
AL_HORIZONTAL_CENTER,
AL_VERTICAL_TOP,
0, 0, 0, 0);
}
/* Restore the kernel resource section protection to be read-only */
MmChangeKernelResourceSectionProtection(MM_READONLY);
}
else
{
/* Is the boot driver installed? */
if (!InbvBootDriverInstalled) return;
/*
* Make the kernel resource section temporarily writable,
* as we are going to change the bitmaps' palette in place.
*/
MmChangeKernelResourceSectionProtection(MM_READWRITE);
/* Load boot screen logo */
BootLogo = InbvGetResourceAddress(IDB_LOGO_DEFAULT);
#ifdef REACTOS_SKUS
Text = NULL;
if (SharedUserData->NtProductType == NtProductWinNt)
{
#ifdef INBV_ROTBAR_IMPLEMENTED
/* Workstation product, use appropriate status bar color */
Bar = InbvGetResourceAddress(IDB_BAR_WKSTA);
#endif
}
else
{
/* Display correct branding based on server suite */
if (ExVerifySuite(StorageServer))
{
/* Storage Server Edition */
Text = InbvGetResourceAddress(IDB_STORAGE_SERVER);
}
else if (ExVerifySuite(ComputeServer))
{
/* Compute Cluster Edition */
Text = InbvGetResourceAddress(IDB_CLUSTER_SERVER);
}
else
{
/* Normal edition */
Text = InbvGetResourceAddress(IDB_SERVER_LOGO);
}
#ifdef INBV_ROTBAR_IMPLEMENTED
/* Server product, use appropriate status bar color */
Bar = InbvGetResourceAddress(IDB_BAR_DEFAULT);
#endif
}
#else
/* Use default status bar */
Bar = InbvGetResourceAddress(IDB_BAR_WKSTA);
#endif
/* Make sure we have a logo */
if (BootLogo)
{
/* Save the main image palette for implementing the fade-in effect */
PBITMAPINFOHEADER BitmapInfoHeader = BootLogo;
LPRGBQUAD Palette = (LPRGBQUAD)((PUCHAR)BootLogo + BitmapInfoHeader->biSize);
RtlCopyMemory(MainPalette, Palette, sizeof(MainPalette));
/* Draw the logo at the center of the screen */
BitBltAligned(BootLogo,
TRUE,
AL_HORIZONTAL_CENTER,
AL_VERTICAL_CENTER,
0, 0, 0, 34);
#ifdef INBV_ROTBAR_IMPLEMENTED
/* Choose progress bar */
TempRotBarSelection = ROT_BAR_DEFAULT_MODE;
#endif
/* Set progress bar coordinates and display it */
InbvSetProgressBarCoordinates(VID_PROGRESS_BAR_LEFT,
VID_PROGRESS_BAR_TOP);
#ifdef REACTOS_SKUS
/* Check for non-workstation products */
if (SharedUserData->NtProductType != NtProductWinNt)
{
/* Overwrite part of the logo for a server product */
InbvScreenToBufferBlt(Buffer, VID_SKU_SAVE_AREA_LEFT,
VID_SKU_SAVE_AREA_TOP, 7, 7, 8);
InbvSolidColorFill(VID_SKU_AREA_LEFT, VID_SKU_AREA_TOP,
VID_SKU_AREA_RIGHT, VID_SKU_AREA_BOTTOM, BV_COLOR_BLACK);
InbvBufferToScreenBlt(Buffer, VID_SKU_SAVE_AREA_LEFT,
VID_SKU_SAVE_AREA_TOP, 7, 7, 8);
/* In setup mode, you haven't selected a SKU yet */
if (ExpInTextModeSetup) Text = NULL;
}
#endif
}
/* Load and draw progress bar bitmap */
BootProgress = InbvGetResourceAddress(IDB_PROGRESS_BAR);
BitBltAligned(BootProgress,
TRUE,
AL_HORIZONTAL_CENTER,
AL_VERTICAL_CENTER,
0, 118, 0, 0);
/* Load and draw copyright text bitmap */
BootCopy = InbvGetResourceAddress(IDB_COPYRIGHT);
BitBltAligned(BootCopy,
TRUE,
AL_HORIZONTAL_LEFT,
AL_VERTICAL_BOTTOM,
22, 0, 0, 20);
#ifdef REACTOS_SKUS
/* Draw the SKU text if it exits */
if (Text)
BitBltPalette(Text, TRUE, VID_SKU_TEXT_LEFT, VID_SKU_TEXT_TOP);
#endif
#ifdef INBV_ROTBAR_IMPLEMENTED
if ((TempRotBarSelection == RB_SQUARE_CELLS) && Bar)
{
/* Save previous screen pixels to buffer */
InbvScreenToBufferBlt(Buffer, 0, 0, 22, 9, 24);
/* Draw the progress bar bit */
BitBltPalette(Bar, TRUE, 0, 0);
/* Store it in global buffer */
InbvScreenToBufferBlt(RotBarBuffer, 0, 0, 22, 9, 24);
/* Restore screen pixels */
InbvBufferToScreenBlt(Buffer, 0, 0, 22, 9, 24);
}
/*
* Add a rotating bottom horizontal bar when using a progress bar,
* to show that ReactOS can be still alive when the bar does not
* appear to progress.
*/
if (TempRotBarSelection == RB_PROGRESS_BAR)
{
LineBmp = InbvGetResourceAddress(IDB_ROTATING_LINE);
if (LineBmp)
{
/* Draw the line and store it in global buffer */
BitBltPalette(LineBmp, TRUE, 0, SCREEN_HEIGHT-6);
InbvScreenToBufferBlt(RotLineBuffer, 0, SCREEN_HEIGHT-6, SCREEN_WIDTH, 6, SCREEN_WIDTH);
}
}
else
{
/* Hide the simple progress bar if not used */
ShowProgressBar = FALSE;
}
#endif
/* Restore the kernel resource section protection to be read-only */
MmChangeKernelResourceSectionProtection(MM_READONLY);
/* Display the boot logo and fade it in */
BootLogoFadeIn();
#ifdef INBV_ROTBAR_IMPLEMENTED
if (!RotBarThreadActive && TempRotBarSelection != RB_UNSPECIFIED)
{
/* Start the animation thread */
Status = PsCreateSystemThread(&ThreadHandle,
0,
NULL,
NULL,
NULL,
InbvRotationThread,
NULL);
if (NT_SUCCESS(Status))
{
/* The thread has started, close the handle as we don't need it */
RotBarThreadActive = TRUE;
ObCloseHandle(ThreadHandle, KernelMode);
}
}
#endif
/* Set filter which will draw text display if needed */
InbvInstallDisplayStringFilter(DisplayFilter);
}
#ifdef INBV_ROTBAR_IMPLEMENTED
/* Do we have the animation thread? */
if (RotBarThreadActive)
{
/* We do, initialize the progress bar */
InbvAcquireLock();
RotBarSelection = TempRotBarSelection;
InbvRotBarInit();
InbvReleaseLock();
}
#endif
}
CODE_SEG("INIT")
VOID
NTAPI
FinalizeBootLogo(VOID)
{
/* Acquire lock and check the display state */
InbvAcquireLock();
if (InbvGetDisplayState() == INBV_DISPLAY_STATE_OWNED)
{
/* Clear the screen */
VidSolidColorFill(0, 0, SCREEN_WIDTH-1, SCREEN_HEIGHT-1, BV_COLOR_BLACK);
}
/* Reset progress bar and lock */
#ifdef INBV_ROTBAR_IMPLEMENTED
PltRotBarStatus = RBS_STOP_ANIMATE;
RotBarThreadActive = FALSE;
#endif
InbvReleaseLock();
}