130 lines
2.0 KiB
C
130 lines
2.0 KiB
C
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/*++
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Copyright (c) 1992 Microsoft Corporation
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Module Name:
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jxbmp.c
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Abstract:
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This program outputs a BMP file to the screen.
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Author:
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David M. Robinson (davidro) 7-July-1992
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Revision History:
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--*/
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#include "fwp.h"
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#include "windef.h"
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#include "wingdi.h"
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#include "selfmap.h"
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#define VIDEO_MEMORY ((PUCHAR)VIDEO_MEMORY_VIRTUAL_BASE)
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//
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// External defines.
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//
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extern ULONG FwBmpHeight;
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extern ULONG FwBmpWidth;
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extern UCHAR FwBmp[];
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extern ULONG FwForegroundColor;
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extern ULONG FwBackgroundColor;
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extern ULONG DisplayWidth;
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extern ULONG FrameSize;
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VOID
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FwOutputBitmap (
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PULONG Destination,
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ULONG Width,
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ULONG Height,
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PUCHAR Bitmap
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)
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/*++
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Routine Description:
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This routine displays a bitmap on the video screen with the current
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color and video attributes.
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Arguments:
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Destination - The destination address (lower right corner) of the location
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to display the bitmap.
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Width - The width of the bitmap in pixels.
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Height - The height of the bitmap in pixels.
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Bitmap - A pointer to the bitmap.
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Multiple - A scaling factor.
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Return Value:
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None.
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--*/
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{
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ULONG I, J, K, L, M;
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PUCHAR Pixel;
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CHAR Color;
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CHAR Character;
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ULONG Count;
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Pixel = (PUCHAR)(Destination) - Width;
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Count = 0;
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for ( I = 0 ; I < Height ; I++ ) {
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for ( J = 0 ; J < Width ; J++ ) {
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if (Count-- == 0) {
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Count = (*Bitmap & 0x7f) - 1;
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Color = (*Bitmap++ & 0x80) ? FwForegroundColor : FwBackgroundColor;
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}
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*Pixel++ = Color;
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}
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Pixel -= (DisplayWidth + Width);
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}
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return;
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}
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VOID
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JxBmp(
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VOID
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)
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/*++
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Routine Description:
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This routine reads a bitmap from the PROM and displays it on the screen.
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Arguments:
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None.
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Return Value:
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None.
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--*/
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{
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PULONG Destination;
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Destination = (PULONG)(VIDEO_MEMORY + FrameSize);
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FwOutputBitmap(Destination, FwBmpWidth, FwBmpHeight, FwBmp);
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}
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