#include "winvideo.h"
#include <cassert>
#include <stdio.h>
#include <ddraw.h>
#include <d3dx.h>

Include dependency graph for ddvideo.cpp:

Functions
void	CheckBoundries (void)
	Checks and corrects all boundries for alignment and stretching.
DWORD	DDColorMatch (IDirectDrawSurface7 *pdds, COLORREF rgb)
	Get translated by system color value.
bool	DDInit ()
	Init DirectDraw Stuff.
bool	DDOverlayInit ()
	Setup the overlay object.
bool	DDPrimaryInit ()
	Init the primary surface.
void	DestroyDDraw ()
	Releases core DirectDraw objects.
void	DestroyOverlay ()
	Releases the overlay surface.
void	DestroyPrimary ()
	Releases the primary surface.
bool	DisplayError (LPSTR lpstrErr, HRESULT hres)
	Create a dialog box and tell the user what went wrong.
bool	DrawOverlay ()
	Load the bitmap and copy it to the overlay surface.
LRESULT CALLBACK	InternalWndProc (HWND hwnd, UINT iMsg, WPARAM wParam, LPARAM lParam)
void	mask2bits (unsigned int mask, color_t &save, char &shift)
void	mouse (int k, LPARAM lParam)
DWORD WINAPI	thread_vsync (LPVOID lpParameter)
Variables
DDCAPS	g_DDCaps
DWORD	g_dwXRatio
DWORD	g_dwYRatio
HANDLE	g_hVSync
DWORD	g_OverlayFlags = 0
DDOVERLAYFX	g_OverlayFX
LPDIRECTDRAWCLIPPER	g_pClipper = NULL
LPDIRECTDRAW7	g_pDD = NULL
LPDIRECTDRAWSURFACE7	g_pDDSBack = NULL
LPDIRECTDRAWSURFACE7	g_pDDSOverlay = NULL
LPDIRECTDRAWSURFACE7	g_pDDSPrimary = NULL
RECT	g_rcDst = {0, 0, 0, 0}
RECT	g_rcSrc = {0, 0, 0, 0}

Function Documentation

void CheckBoundries ( void )

Definition at line 117 of file ddvideo.cpp.

References video::calc_fps, g_DDCaps, g_dwXRatio, g_dwYRatio, g_hAppWnd, g_rcDst, g_rcSrc, g_sizex, g_sizey, g_video, and video::title.

Referenced by InternalWndProc().

{
    // Make sure the coordinates fulfill the stretching requirements.  Often
    // the hardware will require a certain ammount of stretching to do
    // overlays. This stretch factor is held in dwMinOverlayStretch as the
    // stretch factor multiplied by 1000 (to keep an accuracy of 3 decimal places).
    if ((g_DDCaps.dwCaps & DDCAPS_OVERLAYSTRETCH) && (g_DDCaps.dwMinOverlayStretch)
        && (g_dwXRatio < g_DDCaps.dwMinOverlayStretch))
    {
        g_rcDst.right = 2 * GetSystemMetrics(SM_CXSIZEFRAME) + g_rcDst.left + (g_sizex
                                 * (g_DDCaps.dwMinOverlayStretch + 1)) / 1000;
        SetWindowTextA(g_hAppWnd, "Window is too small!");
    }
    else if ((g_DDCaps.dwCaps & DDCAPS_OVERLAYSTRETCH) && (g_DDCaps.dwMaxOverlayStretch)
        && (g_dwXRatio > g_DDCaps.dwMaxOverlayStretch))
    {
        g_rcDst.right = 2 * GetSystemMetrics(SM_CXSIZEFRAME) + g_rcDst.left + (g_sizey
                               * (g_DDCaps.dwMaxOverlayStretch + 999)) / 1000;
        SetWindowTextA(g_hAppWnd, "Window is too large!");
    }
    else if(!g_video->calc_fps) SetWindowText(g_hAppWnd, g_video->title);

    // Recalculate the ratio's for the upcoming calculations
    g_dwXRatio = (g_rcDst.right - g_rcDst.left) * 1000 / (g_rcSrc.right - g_rcSrc.left);
    g_dwYRatio = (g_rcDst.bottom - g_rcDst.top) * 1000 / (g_rcSrc.bottom - g_rcSrc.top);

    // Check to make sure we're within the screen's boundries, if not then fix
    // the problem by adjusting the source rectangle which we draw from.
    if (g_rcDst.left < 0)
    {
        g_rcSrc.left = -g_rcDst.left * 1000 / g_dwXRatio;
        g_rcDst.left = 0;
    }
    if (g_rcDst.right > GetSystemMetrics(SM_CXSCREEN))
    {
        g_rcSrc.right = g_sizex - ((g_rcDst.right - GetSystemMetrics(SM_CXSCREEN)) * 1000 / g_dwXRatio);
        g_rcDst.right = GetSystemMetrics(SM_CXSCREEN);
    }
    if (g_rcDst.bottom > GetSystemMetrics(SM_CYSCREEN))
    {
        g_rcSrc.bottom = g_sizey - ((g_rcDst.bottom - GetSystemMetrics(SM_CYSCREEN)) * 1000 / g_dwYRatio);
        g_rcDst.bottom = GetSystemMetrics(SM_CYSCREEN);
    }
    // I don't know how useful this is... but just in case someone can do it - here's the check.
    if (g_rcDst.top < 0)
    {
        g_rcSrc.top = -g_rcDst.top * 1000 / g_dwYRatio;
        g_rcDst.top = 0;
    }

    // Make sure the coordinates fulfill the alignment requirements
    // these expressions (x & -y) just do alignment by dropping low order bits...
    // so to round up, we add first, then truncate.
    if ((g_DDCaps.dwCaps & DDCAPS_ALIGNBOUNDARYSRC) && g_DDCaps.dwAlignBoundarySrc)
        g_rcSrc.left = (g_rcSrc.left + g_DDCaps.dwAlignBoundarySrc / 2) & -(signed)
            (g_DDCaps.dwAlignBoundarySrc);
    if ((g_DDCaps.dwCaps & DDCAPS_ALIGNSIZESRC) && g_DDCaps.dwAlignSizeSrc)
        g_rcSrc.right = g_rcSrc.left + (g_rcSrc.right - g_rcSrc.left + g_DDCaps.dwAlignSizeSrc
                                   / 2) & -(signed) (g_DDCaps.dwAlignSizeSrc);
    if ((g_DDCaps.dwCaps & DDCAPS_ALIGNBOUNDARYDEST) && g_DDCaps.dwAlignBoundaryDest)
        g_rcDst.left = (g_rcDst.left + g_DDCaps.dwAlignBoundaryDest / 2) & -(signed)
            (g_DDCaps.dwAlignBoundaryDest);
    if ((g_DDCaps.dwCaps & DDCAPS_ALIGNSIZEDEST) && g_DDCaps.dwAlignSizeDest)
        g_rcDst.right = g_rcDst.left + (g_rcDst.right - g_rcDst.left) & -(signed) (g_DDCaps.dwAlignSizeDest);
}

DWORD DDColorMatch	(	IDirectDrawSurface7 *	pdds,
		COLORREF	rgb
	)

Definition at line 184 of file ddvideo.cpp.

References DisplayError(), if(), and YIELD_TO_THREAD.

Referenced by DrawOverlay().

{
    COLORREF       rgbT;
    HDC            hdc;
    DWORD          dw = CLR_INVALID;
    DDSURFACEDESC2 ddsd;
    HRESULT        hres;

    //  Use GDI SetPixel to color match for us
    if (rgb != CLR_INVALID && pdds->GetDC(&hdc) == DD_OK) {
        rgbT = GetPixel(hdc, 0, 0);     // Save current pixel value
        SetPixel(hdc, 0, 0, rgb);       // Set our value
        pdds->ReleaseDC(hdc);
    }
    // Now lock the surface so we can read back the converted color
    ddsd.dwSize = sizeof(ddsd);
    while ((hres = pdds->Lock(NULL, &ddsd, 0, NULL)) == DDERR_WASSTILLDRAWING)
        YIELD_TO_THREAD();
    if (hres == DD_OK) {
        dw = *(DWORD *) ddsd.lpSurface;                 // Get DWORD
        if (ddsd.ddpfPixelFormat.dwRGBBitCount < 32)
            dw &= (1 << ddsd.ddpfPixelFormat.dwRGBBitCount) - 1;  // Mask it to bpp
        pdds->Unlock(NULL);
    }
    else return DisplayError("Can't lock primary surface", hres);
    //  Now put the color that was there back.
    if (rgb != CLR_INVALID && pdds->GetDC(&hdc) == DD_OK) {
        SetPixel(hdc, 0, 0, rgbT);
        pdds->ReleaseDC(hdc);
    }
    return dw;
}

bool DDInit ( )

Definition at line 282 of file ddvideo.cpp.

References DDPrimaryInit(), DisplayError(), g_hAppWnd, g_pDD, g_rcSrc, g_sizex, and g_sizey.

{
    HRESULT hRet;
    g_rcSrc.right = g_sizex;
    g_rcSrc.bottom = g_sizey;

    hRet = DirectDrawCreateEx(NULL, (VOID**)&g_pDD, IID_IDirectDraw7, NULL);
    if (hRet != DD_OK)
        return DisplayError("Can't create DirectDraw7 instance", hRet);

    // Set cooperation level with other windows to be normal (ie. not full screen)
    // You MUST set the cooperation level to be SOMETHING, for windowed apps use
    // DDSCL_NORMAL, for full screen use: DDSCL_EXCLUSIVE | DDSCL_FULLSCREEN.
    hRet = g_pDD->SetCooperativeLevel(g_hAppWnd, DDSCL_NORMAL);
    if (hRet != DD_OK)
        return DisplayError("Can't set cooperative level", hRet);
    return DDPrimaryInit();
}

bool DDOverlayInit ( )

Definition at line 302 of file ddvideo.cpp.

References DisplayError(), g_DDCaps, g_pDD, g_pDDSOverlay, g_sizex, and g_sizey.

Referenced by InternalWndProc().

{
    // Get hardware's CAPabilitieS
    memset(&g_DDCaps, 0, sizeof(g_DDCaps));
    g_DDCaps.dwSize = sizeof(g_DDCaps);
    if (g_pDD->GetCaps(&g_DDCaps, 0))
        return DisplayError("Can't get capabilities");

    // Make sure it supports overlays
    if (!(g_DDCaps.dwCaps & DDCAPS_OVERLAY))
        return DisplayError("Hardware doesn't support overlays");

    //DO NOT Make sure it supports stretching (scaling)
    //if (!(g_DDCaps.dwCaps & DDCAPS_OVERLAYSTRETCH)) return false;

    DDSURFACEDESC2              ddsd;  // DirectDraw surface descriptor
    HRESULT                     hRet;  // I'm not even going to try...
    // The pixel formats that we want the surface to be in
    DDPIXELFORMAT               ddpfOverlayFormats[] = {
        {sizeof(DDPIXELFORMAT), DDPF_RGB, 0, 32, 0xFF0000, 0x0FF00, 0x0000FF, 0}, // 32-bit RGB
        {sizeof(DDPIXELFORMAT), DDPF_RGB, 0, 16, 0x007C00, 0x003e0, 0x00001F, 0}, // 16-bit RGB 5:5:5
        {sizeof(DDPIXELFORMAT), DDPF_RGB, 0, 16, 0x00F800, 0x007e0, 0x00001F, 0}, // 16-bit RGB 5:6:5
        {sizeof(DDPIXELFORMAT), DDPF_FOURCC, mmioFOURCC('U','Y','V','Y'), 16, 0, 0, 0, 0}, // UYVY
        {sizeof(DDPIXELFORMAT), DDPF_FOURCC, mmioFOURCC('Y','4','2','2'), 16, 0, 0, 0, 0}, // the same as UYVY
        {sizeof(DDPIXELFORMAT), DDPF_FOURCC, mmioFOURCC('Y','U','Y','2'), 16, 0, 0, 0, 0}, // YUY2 is unsupported color-space here
        {0}};

    // Setup the overlay surface's attributes in the surface descriptor
    memset(&ddsd, 0, sizeof(ddsd));
    ddsd.dwSize = sizeof(ddsd);
    ddsd.ddsCaps.dwCaps = DDSCAPS_OVERLAY | g_DDCaps.ddsCaps.dwCaps&DDSCAPS_VIDEOMEMORY;
    ddsd.dwFlags = DDSD_CAPS | DDSD_HEIGHT | DDSD_WIDTH | DDSD_PIXELFORMAT;
    ddsd.dwBackBufferCount = 0;
    ddsd.dwWidth = g_sizex;
    ddsd.dwHeight = g_sizey;
    for(int format = 0; ddpfOverlayFormats[format].dwSize; format++) {
        ddsd.ddpfPixelFormat = ddpfOverlayFormats[format];
        // Attempt to create the surface with theses settings
        hRet = g_pDD->CreateSurface(&ddsd, &g_pDDSOverlay, NULL);
        if(hRet == DD_OK) break;
    }
    if (hRet != DD_OK)
        return DisplayError("Can't create appropriate overlay surface", hRet);
    return true;
}

bool DDPrimaryInit ( )

Definition at line 263 of file ddvideo.cpp.

References DisplayError(), g_pDD, and g_pDDSPrimary.

Referenced by DDInit(), and InternalWndProc().

{
    HRESULT        hRet;
    DDSURFACEDESC2 ddsd;  // A surface description structure

    // Create the primary surface.  The primary surface is the full screen -
    // since we're a windowed app - we'll just write to the portion of the
    // screen within our window.
    memset(&ddsd, 0, sizeof(ddsd)); // Set all fields of struct to 0 and set .dwSize to
    ddsd.dwSize = sizeof(ddsd);     // Sizeof the variable - these two steps required for most DDraw structs
    ddsd.dwFlags = DDSD_CAPS;       // Set flags for variables we're using...
    ddsd.ddsCaps.dwCaps = DDSCAPS_PRIMARYSURFACE;  // Set the variables we said we would in dwFlags
    hRet = g_pDD->CreateSurface(&ddsd, &g_pDDSPrimary, NULL);
    if (hRet != DD_OK)
        return DisplayError("Can't create primary surface", hRet);
    return true;
}

void DestroyDDraw ( )

Definition at line 106 of file ddvideo.cpp.

References DestroyPrimary(), and g_pDD.

{
    DestroyPrimary();
    // Release the DDraw object
    if (g_pDD) {
        LPDIRECTDRAW7 pDD(g_pDD); // be sure nobody uses old value
        g_pDD = NULL; Sleep(1); pDD->Release();
    }
}

void DestroyOverlay ( )

Definition at line 83 of file ddvideo.cpp.

References g_pClipper, g_pDDSOverlay, g_pImg, and YIELD_TO_THREAD.

Referenced by InternalWndProc().

{
    if (g_pClipper)
        g_pClipper->Release();
    if (g_pDDSOverlay) {
        g_pImg = 0; LPDIRECTDRAWSURFACE7 pDDSOverlay(g_pDDSOverlay);
        g_pDDSOverlay = NULL;
        YIELD_TO_THREAD();
        pDDSOverlay->Release(); // be sure nobody uses old value
    }
}

void DestroyPrimary ( )

Definition at line 96 of file ddvideo.cpp.

References g_pDDSPrimary.

Referenced by DestroyDDraw(), and InternalWndProc().

{
    if (g_pDDSPrimary)
    {
        g_pDDSPrimary->Release();
        g_pDDSPrimary = NULL;
    }
}

bool DisplayError	(	LPSTR	lpstrErr,
		HRESULT	hres
	)

Definition at line 64 of file ddvideo.cpp.

Referenced by DDColorMatch(), DDInit(), DDOverlayInit(), DDPrimaryInit(), DrawOverlay(), and InternalWndProc().

{
    static bool InError = false;
    int retval = 0;
    if (!InError)
    {
        InError = true;
#ifdef DDSCAPS_PRIMARYSURFACELEFT
        const char *message = hres?DXGetErrorString8A(hres):0;
#else
        char message[256]; if(hres) D3DXGetErrorString(hres, 256, message);
#endif
        retval = MessageBoxA(g_hAppWnd, lpstrErr, hres?message:"Error!", MB_OK|MB_ICONERROR);
        InError = false;
    }
    return false;
}

bool DrawOverlay ( )

Definition at line 218 of file ddvideo.cpp.

References DDColorMatch(), DisplayError(), g_DDCaps, g_hAppWnd, g_OverlayFlags, g_OverlayFX, g_pClipper, g_pDD, g_pDDSOverlay, g_pDDSPrimary, g_pImg, and RGBKEY.

Referenced by InternalWndProc().

{
    HRESULT        hRet;       // This is where we put return values from DirectDraw.
    DDSURFACEDESC2 surfDesc;
    // Setup structure
    memset(&surfDesc, 0, sizeof(surfDesc)); surfDesc.dwSize = sizeof(surfDesc);

    hRet = g_pDDSOverlay->Lock(NULL, &surfDesc, DDLOCK_SURFACEMEMORYPTR | DDLOCK_NOSYSLOCK | DDLOCK_WRITEONLY, NULL);
    if (hRet != DD_OK ||  surfDesc.lpSurface == NULL)
        return DisplayError("Can't lock overlay surface", hRet);
    else {
        g_pImg = (unsigned int *)surfDesc.lpSurface;
        //g_pDDSOverlay->Unlock(NULL); is not needed?
    }
    // Setup effects structure
    memset(&g_OverlayFX, 0, sizeof(g_OverlayFX)); g_OverlayFX.dwSize = sizeof(g_OverlayFX);
    // Setup overlay flags.
    g_OverlayFlags = DDOVER_SHOW;
    // Check for destination color keying capability
    if ((g_DDCaps.dwCKeyCaps & DDCKEYCAPS_DESTOVERLAY) && ((g_DDCaps.dwCaps & DDCAPS_OVERLAYCANTCLIP) || (g_DDCaps.dwCKeyCaps & DDCKEYCAPS_NOCOSTOVERLAY) ))
    {
        // If so, we'll use it to clip the bitmap when other windows go on top
        // of us. Just for the record - this color range for color keying (the
        // high/low values) are not heavily supported right now, so for almost
        // all cards, just use the same color for both.
        g_OverlayFX.dckDestColorkey.dwColorSpaceLowValue =
        g_OverlayFX.dckDestColorkey.dwColorSpaceHighValue = DDColorMatch(g_pDDSPrimary, RGBKEY);
        g_OverlayFlags |= DDOVER_DDFX | DDOVER_KEYDESTOVERRIDE;
    } else {
        // If not, we'll setup a clipper for the window.  This will fix the
        // problem on a few video cards - but the ones that don't shouldn't care.
        hRet = g_pDD->CreateClipper(0, &g_pClipper, NULL);
        if (hRet != DD_OK)
            return DisplayError("Can't create clipper", hRet);
        hRet = g_pClipper->SetHWnd(0, g_hAppWnd);
        if (hRet != DD_OK)
            return DisplayError("Can't attach clipper", hRet);
        hRet = g_pDDSPrimary->SetClipper(g_pClipper);
        if (hRet != DD_OK)
            return DisplayError("Can't set clipper", hRet);
    }
    return true;
}

LRESULT CALLBACK InternalWndProc	(	HWND	hwnd,
		UINT	iMsg,
		WPARAM	wParam,
		LPARAM	lParam
	)

Definition at line 355 of file ddvideo.cpp.

Referenced by WinInit().

{
    PAINTSTRUCT                 ps;         // Structure for the paint message
    POINT                       p = {0, 0}; // Translation point for the window's client region
    HRESULT                     hRet;

    switch (iMsg)
    {
        case WM_MOVE:
            // Make sure we're not moving to be minimized - because otherwise
            // our ratio varialbes (g_dwXRatio and g_dwYRatio) will end up
            // being 0, and once we hit CheckBoundries it divides by 0.
            if (!IsIconic(hwnd))
            {
                g_rcSrc.left = 0;
                g_rcSrc.right = g_sizex;
                g_rcSrc.top = 0;
                g_rcSrc.bottom = g_sizey;
                GetClientRect(hwnd, &g_rcDst);
                g_dwXRatio = (g_rcDst.right - g_rcDst.left) * 1000 /
                             (g_rcSrc.right - g_rcSrc.left);
                g_dwYRatio = (g_rcDst.bottom - g_rcDst.top) * 1000 /
                             (g_rcSrc.bottom - g_rcSrc.top);
                ClientToScreen(hwnd, &p);
                g_rcDst.left = p.x;
                g_rcDst.top = p.y;
                g_rcDst.bottom += p.y;
                g_rcDst.right += p.x;
                CheckBoundries();
            }
            else
                // Else, hide the overlay... just in case we can't do
                // destination color keying, this will pull the overlay
                // off of the screen for the user.
                if (g_pDDSOverlay && g_pDDSPrimary)
                    g_pDDSOverlay->UpdateOverlay(NULL, g_pDDSPrimary, NULL, DDOVER_HIDE, NULL);
            // Check to make sure our window exists before we tell it to
            // repaint. This will fail the first time (while the window is being created).
            if (hwnd)
            {
                InvalidateRect(hwnd, NULL, FALSE);
                UpdateWindow(hwnd);
            }
            return 0L;

        case WM_SIZE:
            // Another check for the minimization action.  This check is
            // quicker though...
            if (wParam != SIZE_MINIMIZED)
            {
                GetClientRect(hwnd, &g_rcDst);
                ClientToScreen(hwnd, &p);
                g_rcDst.left = p.x;
                g_rcDst.top = p.y;
                g_rcDst.bottom += p.y;
                g_rcDst.right += p.x;
                g_rcSrc.left = 0;
                g_rcSrc.right = g_sizex;
                g_rcSrc.top = 0;
                g_rcSrc.bottom = g_sizey;
                // Here we multiply by 1000 to preserve 3 decimal places in the
                // division opperation (we picked 1000 to be on the same order
                // of magnitude as the stretch factor for easier comparisons)
                g_dwXRatio = (g_rcDst.right - g_rcDst.left) * 1000 /
                             (g_rcSrc.right - g_rcSrc.left);
                g_dwYRatio = (g_rcDst.bottom - g_rcDst.top) * 1000 /
                             (g_rcSrc.bottom - g_rcSrc.top);
                CheckBoundries();
            }
            return 0L;

        case WM_PAINT:
            BeginPaint(hwnd, &ps);
            // Check the primary surface to see if it's lost - if so you can
            // pretty much bet that the other surfaces are also lost - thus
            // restore EVERYTHING!  If we got our surfaces stolen by a full
            // screen app - then we'll destroy our primary - and won't be able
            // to initialize it again. When we get our next paint message (the
            // full screen app closed for example) we'll want to try to reinit
            // the surfaces again - that's why there is a check for
            // g_pDDSPrimary == NULL.  The other option, is that our program
            // went through this process, could init the primary again, but it
            // couldn't init the overlay, that's why there's a third check for
            // g_pDDSOverlay == NULL.  Make sure that the check for
            // !g_pDDSPrimary is BEFORE the IsLost call - that way if the
            // pointer is NULL (ie. !g_pDDSPrimary is TRUE) - the compiler
            // won't try to evaluate the IsLost function (which, since the
            // g_pDDSPrimary surface is NULL, would be bad...).
            if (!g_pDDSPrimary || (g_pDDSPrimary->IsLost() != DD_OK) ||
                (g_pDDSOverlay == NULL))
            {
                DestroyOverlay();
                DestroyPrimary();
                if (DDPrimaryInit())
                    if (DDOverlayInit())
                        if (!DrawOverlay())
                            DestroyOverlay();
            }
            // UpdateOverlay is how we put the overlay on the screen.
            if (g_pDDSOverlay && g_pDDSPrimary && g_video->updating)
            {
                hRet = g_pDDSOverlay->UpdateOverlay(&g_rcSrc, g_pDDSPrimary,
                                                    &g_rcDst, g_OverlayFlags,
                                                    &g_OverlayFX);
#ifdef _DEBUG
                if(hRet != DD_OK) DisplayError("Can't update overlay", hRet);
#endif
            }
            EndPaint(hwnd, &ps);
            return 0L;

        // process mouse and keyboard events
        case WM_LBUTTONDOWN:    mouse(1, lParam); break;
        case WM_LBUTTONUP:      mouse(-1, lParam); break;
        case WM_RBUTTONDOWN:    mouse(2, lParam); break;
        case WM_RBUTTONUP:      mouse(-2, lParam); break;
        case WM_MBUTTONDOWN:    mouse(3, lParam); break;
        case WM_MBUTTONUP:      mouse(-3, lParam); break;
        case WM_CHAR:           g_video->on_key(wParam); break;

        case WM_DISPLAYCHANGE:  return 0L;

        case WM_DESTROY:
            // Now, shut down the window...
            PostQuitMessage(0);
            return 0L;
    }
    return g_pUserProc? g_pUserProc(hwnd, iMsg, wParam, lParam) : DefWindowProc(hwnd, iMsg, wParam, lParam);
}

void mask2bits	(	unsigned int	mask,
		color_t &	save,
		char &	shift
	)		`[inline]`

Definition at line 508 of file ddvideo.cpp.

{
    save  = mask; if(!mask) { shift = 8; return; }
    shift = 0; while(!(mask&1)) ++shift, mask >>= 1;
    int bits = 0; while(mask&1) ++bits,  mask >>= 1;
    shift += bits - 8;
}

void mouse	(	int	k,
		LPARAM	lParam
	)		`[inline]`

Definition at line 348 of file ddvideo.cpp.

References g_rcDst, g_sizex, g_sizey, g_video, and video::on_mouse().

Referenced by InternalWndProc().

{
    int x = (int)LOWORD(lParam), y = (int)HIWORD(lParam);
    g_video->on_mouse( x*g_sizex/(g_rcDst.right - g_rcDst.left),
        y*g_sizey/(g_rcDst.bottom - g_rcDst.top), k);
}

DWORD WINAPI thread_vsync ( LPVOID lpParameter )

Definition at line 485 of file ddvideo.cpp.

References g_OverlayFlags, g_OverlayFX, g_pDD, g_pDDSOverlay, g_pDDSPrimary, g_rcDst, g_rcSrc, g_video, video::running, video::updating, and YIELD_TO_THREAD.

{
    BOOL vblank = false;
    while(g_video && g_video->running) {
        while(!vblank && g_video && g_video->running) {
            YIELD_TO_THREAD();
            LPDIRECTDRAW7 pDD(g_pDD);
            if(pDD) pDD->GetVerticalBlankStatus(&vblank);
        }
        LPDIRECTDRAWSURFACE7 pDDSOverlay(g_pDDSOverlay);
        if(pDDSOverlay) pDDSOverlay->UpdateOverlay(&g_rcSrc, g_pDDSPrimary, &g_rcDst, g_OverlayFlags | DDOVER_REFRESHALL, &g_OverlayFX);
        do {
            Sleep(1);
            LPDIRECTDRAW7 pDD(g_pDD);
            if(pDD) pDD->GetVerticalBlankStatus(&vblank);
        } while(vblank && g_video && g_video->running);
        while(g_video && !g_video->updating && g_video->running) Sleep(10);
    }
    return 0;
}