Adding upstream version 7.0.6-dfsg.upstream/7.0.6-dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 562 insertions, 0 deletions

diff --git a/src/VBox/Main/include/DisplayImpl.h b/src/VBox/Main/include/DisplayImpl.h
new file mode 100644
index 00000000..a17b626e
--- /dev/null
+++ b/src/VBox/Main/include/DisplayImpl.h
@@ -0,0 +1,562 @@
+/* $Id: DisplayImpl.h $ */
+/** @file
+ * VirtualBox COM class implementation
+ */
+
+/*
+ * Copyright (C) 2006-2022 Oracle and/or its affiliates.
+ *
+ * This file is part of VirtualBox base platform packages, as
+ * available from https://www.virtualbox.org.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, in version 3 of the
+ * License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <https://www.gnu.org/licenses>.
+ *
+ * SPDX-License-Identifier: GPL-3.0-only
+ */
+
+#ifndef MAIN_INCLUDED_DisplayImpl_h
+#define MAIN_INCLUDED_DisplayImpl_h
+#ifndef RT_WITHOUT_PRAGMA_ONCE
+# pragma once
+#endif
+
+#include "SchemaDefs.h"
+
+#include <iprt/semaphore.h>
+#include <VBox/vmm/pdmdrv.h>
+#include <VBoxVideo.h>
+#include <VBox/vmm/pdmifs.h>
+#include <VBox/VMMDev.h>  /* For struct VMMDevDisplayDef - why is it in that file? */
+#include "DisplayWrap.h"
+
+#include "DisplaySourceBitmapWrap.h"
+#include "GuestScreenInfoWrap.h"
+
+
+class Console;
+
+typedef struct _DISPLAYFBINFO
+{
+    /* The following 3 fields (u32Offset, u32MaxFramebufferSize and u32InformationSize)
+     * are not used by the current HGSMI. They are needed for backward compatibility with
+     * pre-HGSMI additions.
+     */
+    uint32_t u32Offset;
+    uint32_t u32MaxFramebufferSize;
+    uint32_t u32InformationSize;
+
+    ComPtr<IFramebuffer> pFramebuffer;
+    com::Guid framebufferId;
+    ComPtr<IDisplaySourceBitmap> pSourceBitmap;
+    bool fDisabled;
+
+    uint32_t u32Caps;
+
+    struct
+    {
+        ComPtr<IDisplaySourceBitmap> pSourceBitmap;
+        uint8_t *pu8Address;
+        uint32_t cbLine;
+    } updateImage;
+
+    LONG xOrigin;
+    LONG yOrigin;
+
+    ULONG w;
+    ULONG h;
+
+    uint16_t u16BitsPerPixel;
+    uint8_t *pu8FramebufferVRAM;
+    uint32_t u32LineSize;
+
+    uint16_t flags;
+
+    VBOXVIDEOINFOHOSTEVENTS *pHostEvents;
+
+    /** The framebuffer has default format and must be updates immediately. */
+    bool fDefaultFormat;
+
+#ifdef VBOX_WITH_HGSMI
+    bool fVBVAEnabled;
+    bool fVBVAForceResize;
+    VBVAHOSTFLAGS RT_UNTRUSTED_VOLATILE_GUEST *pVBVAHostFlags;
+#endif /* VBOX_WITH_HGSMI */
+
+#ifdef VBOX_WITH_RECORDING
+    struct
+    {
+        ComPtr<IDisplaySourceBitmap> pSourceBitmap;
+    } Recording;
+#endif /* VBOX_WITH_RECORDING */
+
+    /** Description of the currently plugged monitor with preferred mode,
+     * a.k.a the last mode hint sent. */
+    struct VMMDevDisplayDef monitorDesc;
+} DISPLAYFBINFO;
+
+/* The legacy VBVA (VideoAccel) data.
+ *
+ * Backward compatibility with the Guest Additions 3.x or older.
+ */
+typedef struct VIDEOACCEL
+{
+    VBVAMEMORY *pVbvaMemory;
+    bool        fVideoAccelEnabled;
+
+    uint8_t    *pu8VbvaPartial;
+    uint32_t    cbVbvaPartial;
+
+    /* Old Guest Additions (3.x and older) use both VMMDev and DevVGA refresh timer
+     * to process the VBVABUFFER memory. Therefore the legacy VBVA (VideoAccel) host
+     * code can be executed concurrently by VGA refresh timer and the guest VMMDev
+     * request in SMP VMs. The semaphore serialized this.
+     */
+    RTSEMXROADS hXRoadsVideoAccel;
+
+} VIDEOACCEL;
+
+class DisplayMouseInterface
+{
+public:
+    virtual ~DisplayMouseInterface() { }
+    virtual HRESULT i_getScreenResolution(ULONG cScreen, ULONG *pcx,
+                                          ULONG *pcy, ULONG *pcBPP, LONG *pXOrigin, LONG *pYOrigin) = 0;
+    virtual void i_getFramebufferDimensions(int32_t *px1, int32_t *py1,
+                                            int32_t *px2, int32_t *py2) = 0;
+    virtual HRESULT i_reportHostCursorCapabilities(uint32_t fCapabilitiesAdded, uint32_t fCapabilitiesRemoved) = 0;
+    virtual HRESULT i_reportHostCursorPosition(int32_t x, int32_t y, bool fOutOfRange) = 0;
+    virtual bool i_isInputMappingSet(void) = 0;
+};
+
+class VMMDev;
+
+class ATL_NO_VTABLE Display :
+    public DisplayWrap,
+    public DisplayMouseInterface
+{
+public:
+
+    DECLARE_COMMON_CLASS_METHODS(Display)
+
+    HRESULT FinalConstruct();
+    void FinalRelease();
+
+    // public initializer/uninitializer for internal purposes only
+    HRESULT init(Console *aParent);
+    void uninit();
+    int  i_registerSSM(PUVM pUVM);
+
+    // public methods only for internal purposes
+    unsigned i_getMonitorCount() { return mcMonitors; }
+    int i_handleDisplayResize(unsigned uScreenId, uint32_t bpp, void *pvVRAM,
+                              uint32_t cbLine, uint32_t w, uint32_t h, uint16_t flags,
+                              int32_t xOrigin, int32_t yOrigin, bool fVGAResize);
+    void i_handleDisplayUpdate(unsigned uScreenId, int x, int y, int w, int h);
+    void i_handleUpdateVMMDevSupportsGraphics(bool fSupportsGraphics);
+    void i_handleUpdateGuestVBVACapabilities(uint32_t fNewCapabilities);
+    void i_handleUpdateVBVAInputMapping(int32_t xOrigin, int32_t yOrigin, uint32_t cx, uint32_t cy);
+#ifdef VBOX_WITH_VIDEOHWACCEL
+    int  i_handleVHWACommandProcess(int enmCmd, bool fGuestCmd, VBOXVHWACMD RT_UNTRUSTED_VOLATILE_GUEST *pCommand);
+#endif
+    int  i_handle3DNotifyProcess(VBOX3DNOTIFY *p3DNotify);
+
+    int  i_saveVisibleRegion(uint32_t cRect, PRTRECT pRect);
+    int  i_handleSetVisibleRegion(uint32_t cRect, PRTRECT pRect);
+    int  i_handleUpdateMonitorPositions(uint32_t cPositions, PCRTPOINT paPositions);
+    int  i_handleQueryVisibleRegion(uint32_t *pcRects, PRTRECT paRects);
+
+    void i_VRDPConnectionEvent(bool fConnect);
+    void i_VideoAccelVRDP(bool fEnable, int c);
+
+    /* Legacy video acceleration requests coming from the VGA refresh timer. */
+    int  VideoAccelEnableVGA(bool fEnable, VBVAMEMORY *pVbvaMemory);
+
+    /* Legacy video acceleration requests coming from VMMDev. */
+    int  VideoAccelEnableVMMDev(bool fEnable, VBVAMEMORY *pVbvaMemory);
+    void VideoAccelFlushVMMDev(void);
+
+    void i_UpdateDeviceCursorCapabilities(void);
+
+#ifdef VBOX_WITH_RECORDING
+    int  i_recordingInvalidate(void);
+    void i_recordingScreenChanged(unsigned uScreenId);
+#endif
+
+    void i_notifyPowerDown(void);
+
+    // DisplayMouseInterface methods
+    virtual HRESULT i_getScreenResolution(ULONG cScreen, ULONG *pcx,
+                                          ULONG *pcy, ULONG *pcBPP, LONG *pXOrigin, LONG *pYOrigin)
+    {
+        return getScreenResolution(cScreen, pcx, pcy, pcBPP, pXOrigin, pYOrigin, NULL);
+    }
+    virtual void i_getFramebufferDimensions(int32_t *px1, int32_t *py1,
+                                            int32_t *px2, int32_t *py2);
+    virtual HRESULT i_reportHostCursorCapabilities(uint32_t fCapabilitiesAdded, uint32_t fCapabilitiesRemoved);
+    virtual HRESULT i_reportHostCursorPosition(int32_t x, int32_t y, bool fOutOfRange);
+    virtual bool i_isInputMappingSet(void)
+    {
+        return cxInputMapping != 0 && cyInputMapping != 0;
+    }
+
+    static const PDMDRVREG  DrvReg;
+
+private:
+    // Wrapped IDisplay properties
+    virtual HRESULT getGuestScreenLayout(std::vector<ComPtr<IGuestScreenInfo> > &aGuestScreenLayout);
+
+    // Wrapped IDisplay methods
+    virtual HRESULT getScreenResolution(ULONG aScreenId,
+                                        ULONG *aWidth,
+                                        ULONG *aHeight,
+                                        ULONG *aBitsPerPixel,
+                                        LONG *aXOrigin,
+                                        LONG *aYOrigin,
+                                        GuestMonitorStatus_T *aGuestMonitorStatus);
+    virtual HRESULT attachFramebuffer(ULONG aScreenId,
+                                      const ComPtr<IFramebuffer> &aFramebuffer,
+                                      com::Guid &aId);
+    virtual HRESULT detachFramebuffer(ULONG aScreenId,
+                                      const com::Guid &aId);
+    virtual HRESULT queryFramebuffer(ULONG aScreenId,
+                                     ComPtr<IFramebuffer> &aFramebuffer);
+    virtual HRESULT setVideoModeHint(ULONG aDisplay,
+                                     BOOL aEnabled,
+                                     BOOL aChangeOrigin,
+                                     LONG aOriginX,
+                                     LONG aOriginY,
+                                     ULONG aWidth,
+                                     ULONG aHeight,
+                                     ULONG aBitsPerPixel,
+                                     BOOL aNotify);
+    virtual HRESULT getVideoModeHint(ULONG aDisplay,
+                                     BOOL *aEnabled,
+                                     BOOL *aChangeOrigin,
+                                     LONG *aOriginX,
+                                     LONG *aOriginY,
+                                     ULONG *aWidth,
+                                     ULONG *aHeight,
+                                     ULONG *aBitsPerPixel);
+    virtual HRESULT setSeamlessMode(BOOL aEnabled);
+    virtual HRESULT takeScreenShot(ULONG aScreenId,
+                                   BYTE *aAddress,
+                                   ULONG aWidth,
+                                   ULONG aHeight,
+                                   BitmapFormat_T aBitmapFormat);
+    virtual HRESULT takeScreenShotToArray(ULONG aScreenId,
+                                          ULONG aWidth,
+                                          ULONG aHeight,
+                                          BitmapFormat_T aBitmapFormat,
+                                          std::vector<BYTE> &aScreenData);
+    virtual HRESULT drawToScreen(ULONG aScreenId,
+                                 BYTE *aAddress,
+                                 ULONG aX,
+                                 ULONG aY,
+                                 ULONG aWidth,
+                                 ULONG aHeight);
+    virtual HRESULT invalidateAndUpdate();
+    virtual HRESULT invalidateAndUpdateScreen(ULONG aScreenId);
+    virtual HRESULT completeVHWACommand(BYTE *aCommand);
+    virtual HRESULT viewportChanged(ULONG aScreenId,
+                                    ULONG aX,
+                                    ULONG aY,
+                                    ULONG aWidth,
+                                    ULONG aHeight);
+    virtual HRESULT querySourceBitmap(ULONG aScreenId,
+                                      ComPtr<IDisplaySourceBitmap> &aDisplaySourceBitmap);
+    virtual HRESULT notifyScaleFactorChange(ULONG aScreenId,
+                                            ULONG aScaleFactorWMultiplied,
+                                            ULONG aScaleFactorHMultiplied);
+    virtual HRESULT notifyHiDPIOutputPolicyChange(BOOL fUnscaledHiDPI);
+    virtual HRESULT setScreenLayout(ScreenLayoutMode_T aScreenLayoutMode,
+                                    const std::vector<ComPtr<IGuestScreenInfo> > &aGuestScreenInfo);
+    virtual HRESULT detachScreens(const std::vector<LONG> &aScreenIds);
+    virtual HRESULT createGuestScreenInfo(ULONG aDisplay,
+                                          GuestMonitorStatus_T aStatus,
+                                          BOOL aPrimary,
+                                          BOOL aChangeOrigin,
+                                          LONG aOriginX,
+                                          LONG aOriginY,
+                                          ULONG aWidth,
+                                          ULONG aHeight,
+                                          ULONG aBitsPerPixel,
+                                          ComPtr<IGuestScreenInfo> &aGuestScreenInfo);
+
+    // Wrapped IEventListener properties
+
+    // Wrapped IEventListener methods
+    virtual HRESULT handleEvent(const ComPtr<IEvent> &aEvent);
+
+    // other internal methods
+    HRESULT takeScreenShotWorker(ULONG aScreenId,
+                                 BYTE *aAddress,
+                                 ULONG aWidth,
+                                 ULONG aHeight,
+                                 BitmapFormat_T aBitmapFormat,
+                                 ULONG *pcbOut);
+    int processVBVAResize(PCVBVAINFOVIEW pView, PCVBVAINFOSCREEN pScreen, void *pvVRAM, bool fResetInputMapping);
+
+    static DECLCALLBACK(void*) i_drvQueryInterface(PPDMIBASE pInterface, const char *pszIID);
+    static DECLCALLBACK(int)   i_drvConstruct(PPDMDRVINS pDrvIns, PCFGMNODE pCfg, uint32_t fFlags);
+    static DECLCALLBACK(void)  i_drvDestruct(PPDMDRVINS pDrvIns);
+    static DECLCALLBACK(void)  i_drvPowerOff(PPDMDRVINS pDrvIns);
+    static DECLCALLBACK(int)   i_displayResizeCallback(PPDMIDISPLAYCONNECTOR pInterface, uint32_t bpp, void *pvVRAM,
+                                                       uint32_t cbLine, uint32_t cx, uint32_t cy);
+    static DECLCALLBACK(void)  i_displayUpdateCallback(PPDMIDISPLAYCONNECTOR pInterface,
+                                                       uint32_t x, uint32_t y, uint32_t cx, uint32_t cy);
+    static DECLCALLBACK(void)  i_displayRefreshCallback(PPDMIDISPLAYCONNECTOR pInterface);
+    static DECLCALLBACK(void)  i_displayResetCallback(PPDMIDISPLAYCONNECTOR pInterface);
+    static DECLCALLBACK(void)  i_displayLFBModeChangeCallback(PPDMIDISPLAYCONNECTOR pInterface, bool fEnabled);
+    static DECLCALLBACK(void)  i_displayProcessAdapterDataCallback(PPDMIDISPLAYCONNECTOR pInterface,
+                                                                   void *pvVRAM, uint32_t u32VRAMSize);
+    static DECLCALLBACK(void)  i_displayProcessDisplayDataCallback(PPDMIDISPLAYCONNECTOR pInterface,
+                                                                   void *pvVRAM, unsigned uScreenId);
+
+#ifdef VBOX_WITH_VIDEOHWACCEL
+    static DECLCALLBACK(int)  i_displayVHWACommandProcess(PPDMIDISPLAYCONNECTOR pInterface, int enmCmd, bool fGuestCmd,
+                                                          VBOXVHWACMD RT_UNTRUSTED_VOLATILE_GUEST *pCommand);
+#endif
+    static DECLCALLBACK(int)  i_display3DNotifyProcess(PPDMIDISPLAYCONNECTOR pInterface,
+                                                       VBOX3DNOTIFY *p3DNotify);
+
+#ifdef VBOX_WITH_HGSMI
+    static DECLCALLBACK(int)   i_displayVBVAEnable(PPDMIDISPLAYCONNECTOR pInterface, unsigned uScreenId,
+                                                   VBVAHOSTFLAGS RT_UNTRUSTED_VOLATILE_GUEST *pHostFlags);
+    static DECLCALLBACK(void)  i_displayVBVADisable(PPDMIDISPLAYCONNECTOR pInterface, unsigned uScreenId);
+    static DECLCALLBACK(void)  i_displayVBVAUpdateBegin(PPDMIDISPLAYCONNECTOR pInterface, unsigned uScreenId);
+    static DECLCALLBACK(void)  i_displayVBVAUpdateProcess(PPDMIDISPLAYCONNECTOR pInterface, unsigned uScreenId,
+                                                          struct VBVACMDHDR const RT_UNTRUSTED_VOLATILE_GUEST *pCmd, size_t cbCmd);
+    static DECLCALLBACK(void)  i_displayVBVAUpdateEnd(PPDMIDISPLAYCONNECTOR pInterface, unsigned uScreenId, int32_t x, int32_t y,
+                                                      uint32_t cx, uint32_t cy);
+    static DECLCALLBACK(int)   i_displayVBVAResize(PPDMIDISPLAYCONNECTOR pInterface, PCVBVAINFOVIEW pView,
+                                                   PCVBVAINFOSCREEN pScreen, void *pvVRAM,
+                                                   bool fResetInputMapping);
+    static DECLCALLBACK(int)   i_displayVBVAMousePointerShape(PPDMIDISPLAYCONNECTOR pInterface, bool fVisible, bool fAlpha,
+                                                              uint32_t xHot, uint32_t yHot, uint32_t cx, uint32_t cy,
+                                                              const void *pvShape);
+    static DECLCALLBACK(void)  i_displayVBVAGuestCapabilityUpdate(PPDMIDISPLAYCONNECTOR pInterface, uint32_t fCapabilities);
+
+    static DECLCALLBACK(void)  i_displayVBVAInputMappingUpdate(PPDMIDISPLAYCONNECTOR pInterface, int32_t xOrigin, int32_t yOrigin,
+                                                               uint32_t cx, uint32_t cy);
+    static DECLCALLBACK(void)  i_displayVBVAReportCursorPosition(PPDMIDISPLAYCONNECTOR pInterface, uint32_t fFlags, uint32_t uScreen, uint32_t x, uint32_t y);
+#endif
+
+    static DECLCALLBACK(int)  i_displaySSMSaveScreenshot(PSSMHANDLE pSSM, PCVMMR3VTABLE pVMM, void *pvUser);
+    static DECLCALLBACK(int)  i_displaySSMLoadScreenshot(PSSMHANDLE pSSM, PCVMMR3VTABLE pVMM, void *pvUser,
+                                                         uint32_t uVersion, uint32_t uPass);
+    static DECLCALLBACK(int)  i_displaySSMSave(PSSMHANDLE pSSM, PCVMMR3VTABLE pVMM, void *pvUser);
+    static DECLCALLBACK(int)  i_displaySSMLoad(PSSMHANDLE pSSM, PCVMMR3VTABLE pVMM, void *pvUser,
+                                               uint32_t uVersion, uint32_t uPass);
+
+    Console * const         mParent;
+    /** Pointer to the associated display driver. */
+    struct DRVMAINDISPLAY   *mpDrv;
+
+    unsigned mcMonitors;
+    /** Input mapping rectangle top left X relative to the first screen. */
+    int32_t     xInputMappingOrigin;
+    /** Input mapping rectangle top left Y relative to the first screen. */
+    int32_t     yInputMappingOrigin;
+    uint32_t    cxInputMapping;  /**< Input mapping rectangle width. */
+    uint32_t    cyInputMapping;  /**< Input mapping rectangle height. */
+    DISPLAYFBINFO maFramebuffers[SchemaDefs::MaxGuestMonitors];
+    /** Does the VMM device have the "supports graphics" capability set?
+     *  Does not go into the saved state as it is refreshed on restore. */
+    bool        mfVMMDevSupportsGraphics;
+    /** Mirror of the current guest VBVA capabilities. */
+    uint32_t    mfGuestVBVACapabilities;
+    /** Mirror of the current host cursor capabilities. */
+    uint32_t    mfHostCursorCapabilities;
+
+    bool mfSourceBitmapEnabled;
+    bool volatile fVGAResizing;
+
+    /** Are we in seamless mode?  Not saved, as we exit seamless on saving. */
+    bool        mfSeamlessEnabled;
+    /** Last set seamless visible region, number of rectangles. */
+    uint32_t    mcRectVisibleRegion;
+    /** Last set seamless visible region, data.  Freed on final clean-up. */
+    PRTRECT     mpRectVisibleRegion;
+
+    bool        mfVideoAccelVRDP;
+    uint32_t    mfu32SupportedOrders;
+    /** Number of currently connected VRDP clients. */
+    int32_t volatile mcVRDPRefs;
+
+    /* The legacy VBVA data and methods. */
+    VIDEOACCEL mVideoAccelLegacy;
+
+    int  i_VideoAccelEnable(bool fEnable, VBVAMEMORY *pVbvaMemory, PPDMIDISPLAYPORT pUpPort);
+    void i_VideoAccelFlush(PPDMIDISPLAYPORT pUpPort);
+    bool i_VideoAccelAllowed(void);
+
+    int  i_videoAccelRefreshProcess(PPDMIDISPLAYPORT pUpPort);
+    int  i_videoAccelEnable(bool fEnable, VBVAMEMORY *pVbvaMemory, PPDMIDISPLAYPORT pUpPort);
+    int  i_videoAccelFlush(PPDMIDISPLAYPORT pUpPort);
+
+    /* Legacy pre-HGSMI handlers. */
+    void processAdapterData(void *pvVRAM, uint32_t u32VRAMSize);
+    void processDisplayData(void *pvVRAM, unsigned uScreenId);
+
+    /** Serializes access to mVideoAccelLegacy and mfVideoAccelVRDP, etc between VRDP and Display. */
+    RTCRITSECT           mVideoAccelLock;
+
+#ifdef VBOX_WITH_RECORDING
+    /* Serializes access to video recording source bitmaps. */
+    RTCRITSECT           mVideoRecLock;
+    /** Array which defines which screens are being enabled for recording. */
+    bool                 maRecordingEnabled[SchemaDefs::MaxGuestMonitors];
+#endif
+
+public:
+
+    static DECLCALLBACK(int) i_displayTakeScreenshotEMT(Display *pDisplay, ULONG aScreenId, uint8_t **ppbData, size_t *pcbData,
+                                                        uint32_t *pcx, uint32_t *pcy, bool *pfMemFree);
+
+private:
+    static DECLCALLBACK(int) i_InvalidateAndUpdateEMT(Display *pDisplay, unsigned uId, bool fUpdateAll);
+    static DECLCALLBACK(int) i_drawToScreenEMT(Display *pDisplay, ULONG aScreenId, BYTE *address, ULONG x, ULONG y,
+                                               ULONG width, ULONG height);
+
+    void i_updateGuestGraphicsFacility(void);
+
+#ifdef VBOX_WITH_HGSMI
+    volatile uint32_t mu32UpdateVBVAFlags;
+#endif
+
+private:
+    DECLARE_CLS_COPY_CTOR_ASSIGN_NOOP(Display); /* Shuts up MSC warning C4625. */
+};
+
+/* The legacy VBVA helpers. */
+int videoAccelConstruct(VIDEOACCEL *pVideoAccel);
+void videoAccelDestroy(VIDEOACCEL *pVideoAccel);
+void i_vbvaSetMemoryFlags(VBVAMEMORY *pVbvaMemory,
+                          bool fVideoAccelEnabled,
+                          bool fVideoAccelVRDP,
+                          uint32_t fu32SupportedOrders,
+                          DISPLAYFBINFO *paFBInfos,
+                          unsigned cFBInfos);
+int videoAccelEnterVGA(VIDEOACCEL *pVideoAccel);
+void videoAccelLeaveVGA(VIDEOACCEL *pVideoAccel);
+int videoAccelEnterVMMDev(VIDEOACCEL *pVideoAccel);
+void videoAccelLeaveVMMDev(VIDEOACCEL *pVideoAccel);
+
+
+/* helper function, code in DisplayResampleImage.cpp */
+void BitmapScale32(uint8_t *dst, int dstW, int dstH,
+                   const uint8_t *src, int iDeltaLine, int srcW, int srcH);
+
+/* helper function, code in DisplayPNGUtul.cpp */
+int DisplayMakePNG(uint8_t *pbData, uint32_t cx, uint32_t cy,
+                   uint8_t **ppu8PNG, uint32_t *pcbPNG, uint32_t *pcxPNG, uint32_t *pcyPNG,
+                     uint8_t fLimitSize);
+
+class ATL_NO_VTABLE DisplaySourceBitmap:
+    public DisplaySourceBitmapWrap
+{
+public:
+
+    DECLARE_COMMON_CLASS_METHODS(DisplaySourceBitmap)
+
+    HRESULT FinalConstruct();
+    void FinalRelease();
+
+    /* Public initializer/uninitializer for internal purposes only. */
+    HRESULT init(ComObjPtr<Display> pDisplay, unsigned uScreenId, DISPLAYFBINFO *pFBInfo);
+    void uninit();
+
+    bool i_usesVRAM(void) { return m.pu8Allocated == NULL; }
+
+private:
+    // wrapped IDisplaySourceBitmap properties
+    virtual HRESULT getScreenId(ULONG *aScreenId);
+
+    // wrapped IDisplaySourceBitmap methods
+    virtual HRESULT queryBitmapInfo(BYTE **aAddress,
+                                    ULONG *aWidth,
+                                    ULONG *aHeight,
+                                    ULONG *aBitsPerPixel,
+                                    ULONG *aBytesPerLine,
+                                    BitmapFormat_T *aBitmapFormat);
+
+    int initSourceBitmap(unsigned aScreenId, DISPLAYFBINFO *pFBInfo);
+
+    struct Data
+    {
+        ComObjPtr<Display> pDisplay;
+        unsigned uScreenId;
+        DISPLAYFBINFO *pFBInfo;
+
+        uint8_t *pu8Allocated;
+
+        uint8_t *pu8Address;
+        ULONG ulWidth;
+        ULONG ulHeight;
+        ULONG ulBitsPerPixel;
+        ULONG ulBytesPerLine;
+        BitmapFormat_T bitmapFormat;
+    };
+
+    Data m;
+};
+
+class ATL_NO_VTABLE GuestScreenInfo:
+    public GuestScreenInfoWrap
+{
+public:
+
+    DECLARE_COMMON_CLASS_METHODS(GuestScreenInfo)
+
+    HRESULT FinalConstruct();
+    void FinalRelease();
+
+    /* Public initializer/uninitializer for internal purposes only. */
+    HRESULT init(ULONG aDisplay,
+                 GuestMonitorStatus_T aGuestMonitorStatus,
+                 BOOL aPrimary,
+                 BOOL aChangeOrigin,
+                 LONG aOriginX,
+                 LONG aOriginY,
+                 ULONG aWidth,
+                 ULONG aHeight,
+                 ULONG aBitsPerPixel);
+    void uninit();
+
+private:
+    // wrapped IGuestScreenInfo properties
+    virtual HRESULT getScreenId(ULONG *aScreenId);
+    virtual HRESULT getGuestMonitorStatus(GuestMonitorStatus_T *aGuestMonitorStatus);
+    virtual HRESULT getPrimary(BOOL *aPrimary);
+    virtual HRESULT getOrigin(BOOL *aOrigin);
+    virtual HRESULT getOriginX(LONG *aOriginX);
+    virtual HRESULT getOriginY(LONG *aOriginY);
+    virtual HRESULT getWidth(ULONG *aWidth);
+    virtual HRESULT getHeight(ULONG *aHeight);
+    virtual HRESULT getBitsPerPixel(ULONG *aBitsPerPixel);
+    virtual HRESULT getExtendedInfo(com::Utf8Str &aExtendedInfo);
+
+    ULONG mScreenId;
+    GuestMonitorStatus_T mGuestMonitorStatus;
+    BOOL  mPrimary;
+    BOOL  mOrigin;
+    LONG  mOriginX;
+    LONG  mOriginY;
+    ULONG mWidth;
+    ULONG mHeight;
+    ULONG mBitsPerPixel;
+};
+
+#endif /* !MAIN_INCLUDED_DisplayImpl_h */
+/* vi: set tabstop=4 shiftwidth=4 expandtab: */