video.h File Reference

#include <pshpack1.h>
#include <poppack.h>

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Go to the source code of this file.

Classes
struct	_PALETTE_ENTRY

Typedefs
typedef struct _PALETTE_ENTRY	PALETTE_ENTRY
typedef struct _PALETTE_ENTRY *	PPALETTE_ENTRY

Functions
PVOID	VideoAllocateOffScreenBuffer (VOID)
VOID	VideoCopyOffScreenBufferToVRAM (VOID)
VOID	VideoSavePaletteState (PPALETTE_ENTRY Palette, ULONG ColorCount)
VOID	VideoRestorePaletteState (PPALETTE_ENTRY Palette, ULONG ColorCount)
VOID	VideoSetAllColorsToBlack (ULONG ColorCount)
VOID	VideoFadeIn (PPALETTE_ENTRY Palette, ULONG ColorCount)
VOID	VideoFadeOut (ULONG ColorCount)

Typedef Documentation

PALETTE_ENTRY

typedef struct _PALETTE_ENTRY PALETTE_ENTRY

PPALETTE_ENTRY

typedef struct _PALETTE_ENTRY * PPALETTE_ENTRY

Function Documentation

VideoAllocateOffScreenBuffer()

PVOID VideoAllocateOffScreenBuffer

(

VOID

)

Definition at line 17 of file video.c.

{
    ULONG BufferSize;

    if (VideoOffScreenBuffer != NULL)
    {
        MmFreeMemory(VideoOffScreenBuffer);
        VideoOffScreenBuffer = NULL;
    }

    BufferSize = MachVideoGetBufferSize();

    VideoOffScreenBuffer = MmAllocateMemoryWithType(BufferSize, LoaderFirmwareTemporary);

    return VideoOffScreenBuffer;
}

Referenced by TuiInitialize().

VideoCopyOffScreenBufferToVRAM()

VOID VideoCopyOffScreenBufferToVRAM

(

VOID

)

Definition at line 34 of file video.c.

{
    MachVideoCopyOffScreenBufferToVRAM(VideoOffScreenBuffer);
}

Referenced by MiniTuiDrawBackdrop(), MiniTuiDrawMenu(), MiniTuiDrawProgressBar(), TuiDisplayMenu(), TuiDrawBackdrop(), TuiDrawMenu(), TuiDrawProgressBar(), TuiDrawStatusText(), TuiEditBox(), TuiMessageBoxCritical(), and TuiProcessMenuKeyboardEvent().

VideoFadeIn()

VOID VideoFadeIn	(	PPALETTE_ENTRY	Palette,
		ULONG	ColorCount
	)

Definition at line 75 of file video.c.

{
    ULONG Index;
    UCHAR Color;
    PPALETTE_ENTRY PaletteColors;

    PaletteColors = FrLdrTempAlloc(sizeof(PALETTE_ENTRY) * ColorCount, TAG_PALETTE_COLORS);
    if (!PaletteColors) return;

    for (Index = 0; Index < RGB_MAX; Index++)
    {
        for (Color = 0; Color < ColorCount; Color++)
        {
            MachVideoGetPaletteColor(Color, &PaletteColors[Color].Red, &PaletteColors[Color].Green, &PaletteColors[Color].Blue);

            // Increment each color so it approaches its real value
            if (PaletteColors[Color].Red < Palette[Color].Red)
            {
                PaletteColors[Color].Red++;
            }
            if (PaletteColors[Color].Green < Palette[Color].Green)
            {
                PaletteColors[Color].Green++;
            }
            if (PaletteColors[Color].Blue < Palette[Color].Blue)
            {
                PaletteColors[Color].Blue++;
            }

            // Make sure we haven't exceeded the real value
            if (PaletteColors[Color].Red > Palette[Color].Red)
            {
                PaletteColors[Color].Red = Palette[Color].Red;
            }
            if (PaletteColors[Color].Green > Palette[Color].Green)
            {
                PaletteColors[Color].Green = Palette[Color].Green;
            }
            if (PaletteColors[Color].Blue > Palette[Color].Blue)
            {
                PaletteColors[Color].Blue = Palette[Color].Blue;
            }
        }

        // Set the colors
        for (Color = 0; Color < ColorCount; Color++)
        {
            if ((Color % RGB_MAX_PER_ITERATION) == 0)
            {
                MachVideoSync();
            }

            MachVideoSetPaletteColor(Color, PaletteColors[Color].Red, PaletteColors[Color].Green, PaletteColors[Color].Blue);
        }
    }

    FrLdrTempFree(PaletteColors, TAG_PALETTE_COLORS);
}

Referenced by TuiFadeInBackdrop().

VideoFadeOut()

VOID VideoFadeOut

(

ULONG

ColorCount

)

Definition at line 134 of file video.c.

{
    ULONG Index;
    UCHAR Color;
    UCHAR Red;
    UCHAR Green;
    UCHAR Blue;

    for (Index = 0; Index < RGB_MAX; Index++)
    {
        for (Color = 0; Color < ColorCount; Color++)
        {
            if ((Color % RGB_MAX_PER_ITERATION) == 0)
            {
                MachVideoSync();
            }

            MachVideoGetPaletteColor(Color, &Red, &Green, &Blue);

            if (Red > 0)
            {
                Red--;
            }
            if (Green > 0)
            {
                Green--;
            }
            if (Blue > 0)
            {
                Blue--;
            }

            MachVideoSetPaletteColor(Color, Red, Green, Blue);
        }
    }
}

Referenced by TuiFadeOut().

VideoRestorePaletteState()

VOID VideoRestorePaletteState	(	PPALETTE_ENTRY	Palette,
		ULONG	ColorCount
	)

Definition at line 50 of file video.c.

{
    ULONG Color;

    MachVideoSync();

    for (Color = 0; Color < ColorCount; Color++)
    {
        MachVideoSetPaletteColor((UCHAR)Color, Palette[Color].Red, Palette[Color].Green, Palette[Color].Blue);
    }
}

Referenced by TuiFadeOut().

VideoSavePaletteState()

VOID VideoSavePaletteState	(	PPALETTE_ENTRY	Palette,
		ULONG	ColorCount
	)

Definition at line 40 of file video.c.

{
    ULONG Color;

    for (Color = 0; Color < ColorCount; Color++)
    {
        MachVideoGetPaletteColor((UCHAR)Color, &Palette[Color].Red, &Palette[Color].Green, &Palette[Color].Blue);
    }
}

Referenced by TuiFadeInBackdrop(), and TuiFadeOut().

VideoSetAllColorsToBlack()

VOID VideoSetAllColorsToBlack

(

ULONG

ColorCount

)

Definition at line 63 of file video.c.

{
    UCHAR Color;

    MachVideoSync();

    for (Color = 0; Color < ColorCount; Color++)
    {
        MachVideoSetPaletteColor(Color, 0, 0, 0);
    }
}

Referenced by TuiFadeInBackdrop().