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+/*
+ * $Xorg: multibufst.h,v 1.4 2001/02/09 02:03:24 xorgcvs Exp $
+ *
+Copyright 1989, 1998 The Open Group
+
+Permission to use, copy, modify, distribute, and sell this software and its
+documentation for any purpose is hereby granted without fee, provided that
+the above copyright notice appear in all copies and that both that
+copyright notice and this permission notice appear in supporting
+documentation.
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of The Open Group shall not be
+used in advertising or otherwise to promote the sale, use or other dealings
+in this Software without prior written authorization from The Open Group.
+ */
+
+/* $XFree86: xc/include/extensions/multibufst.h,v 3.8 2001/12/19 21:37:29 dawes Exp $ */
+
+#ifndef _MULTIBUFST_H_
+#define _MULTIBUFST_H_
+
+/*
+ * Protocol requests constants and alignment values
+ */
+
+#include "multibuf.h"
+#ifdef _MULTIBUF_SERVER_
+#include "inputstr.h"
+#endif
+
+#if !defined(UNIXCPP) || defined(ANSICPP)
+#define MbufGetReq(name,req,info) GetReq (name, req); \
+ req->reqType = info->codes->major_opcode; \
+ req->mbufReqType = X_##name;
+#else
+#define MbufGetReq(name,req,info) GetReq (name, req); \
+ req->reqType = info->codes->major_opcode; \
+ req->mbufReqType = X_/**/name;
+#endif
+
+#define Window CARD32
+#define Drawable CARD32
+#define VisualID CARD32
+#define Multibuffer CARD32
+
+typedef struct xMbufBufferInfo {
+ CARD32 visualID B32; /* associated visual */
+ CARD16 maxBuffers B16; /* maximum supported buffers */
+ CARD8 depth; /* depth of visual (redundant) */
+ CARD8 unused;
+} xMbufBufferInfo;
+#define sz_xMbufBufferInfo 8
+
+typedef struct {
+ BYTE type;
+ BYTE unused;
+ CARD16 sequenceNumber B16;
+ CARD32 buffer B32; /* affected buffer */
+ BYTE state; /* current status */
+ CARD8 unused1;
+ CARD16 unused2 B16;
+ CARD32 unused3 B32;
+ CARD32 unused4 B32;
+ CARD32 unused5 B32;
+ CARD32 unused6 B32;
+ CARD32 unused7 B32;
+} xMbufClobberNotifyEvent;
+
+typedef struct {
+ BYTE type;
+ BYTE unused;
+ CARD16 sequenceNumber B16;
+ CARD32 buffer B32; /* affected buffer */
+ CARD32 timeStamp B32; /* update time */
+ CARD32 unused1 B32;
+ CARD32 unused2 B32;
+ CARD32 unused3 B32;
+ CARD32 unused4 B32;
+ CARD32 unused5 B32;
+ CARD32 unused6 B32;
+} xMbufUpdateNotifyEvent;
+
+typedef struct {
+ CARD8 reqType; /* always codes->major_opcode */
+ CARD8 mbufReqType; /* always X_MbufGetBufferVersion */
+ CARD16 length B16;
+} xMbufGetBufferVersionReq;
+#define sz_xMbufGetBufferVersionReq 4
+
+typedef struct {
+ BYTE type; /* X_Reply */
+ CARD8 unused; /* not used */
+ CARD16 sequenceNumber B16;
+ CARD32 length B32;
+ CARD8 majorVersion; /* major version of Multi-Buffering protocol */
+ CARD8 minorVersion; /* minor version of Multi-Buffering protocol */
+ CARD16 pad1 B16;
+ CARD32 pad2 B32;
+ CARD32 pad3 B32;
+ CARD32 pad4 B32;
+ CARD32 pad5 B32;
+ CARD32 pad6 B32;
+} xMbufGetBufferVersionReply;
+#define sz_xMbufGetBufferVersionReply 32
+
+typedef struct {
+ CARD8 reqType; /* always codes->major_opcode */
+ CARD8 mbufReqType; /* always X_MbufCreateImageBuffers */
+ CARD16 length B16;
+ CARD32 window B32; /* associated window */
+ CARD8 updateAction; /* action at update */
+ CARD8 updateHint; /* hint as to frequency of updates */
+ CARD16 unused;
+} xMbufCreateImageBuffersReq; /* followed by buffer ids */
+#define sz_xMbufCreateImageBuffersReq 12
+
+typedef struct {
+ BYTE type; /* X_Reply */
+ CARD8 unused; /* not used */
+ CARD16 sequenceNumber B16;
+ CARD32 length B32;
+ CARD16 numberBuffer B16; /* number successfully allocated */
+ CARD16 unused1 B16;
+ CARD32 unused2 B32;
+ CARD32 unused3 B32;
+ CARD32 unused4 B32;
+ CARD32 unused5 B32;
+ CARD32 unused6 B32;
+} xMbufCreateImageBuffersReply;
+#define sz_xMbufCreateImageBuffersReply 32
+
+typedef struct {
+ CARD8 reqType; /* always codes->major_opcode */
+ CARD8 mbufReqType; /* always X_MbufDestroyImageBuffers */
+ CARD16 length B16;
+ CARD32 window B32; /* associated window */
+} xMbufDestroyImageBuffersReq;
+#define sz_xMbufDestroyImageBuffersReq 8
+
+typedef struct {
+ CARD8 reqType; /* always codes->major_opcode */
+ CARD8 mbufReqType; /* always X_MbufDisplayImageBuffers */
+ CARD16 length B16;
+ CARD16 minDelay B16; /* minimum time between last update and now */
+ CARD16 maxDelay B16; /* maximum time between last update and now */
+} xMbufDisplayImageBuffersReq; /* followed by list of buffers */
+#define sz_xMbufDisplayImageBuffersReq 8
+
+typedef struct {
+ CARD8 reqType; /* always codes->major_opcode */
+ CARD8 mbufReqType; /* always X_MbufSetMBufferAttributes */
+ CARD16 length B16;
+ CARD32 window B32; /* associated window */
+ CARD32 valueMask B32; /* modified entries */
+} xMbufSetMBufferAttributesReq; /* followed by values */
+#define sz_xMbufSetMBufferAttributesReq 12
+
+typedef struct {
+ CARD8 reqType; /* always codes->major_opcode */
+ CARD8 mbufReqType; /* always X_MbufGetMBufferAttributes */
+ CARD16 length B16;
+ CARD32 window B32; /* associated window */
+} xMbufGetMBufferAttributesReq;
+#define sz_xMbufGetMBufferAttributesReq 8
+
+typedef struct {
+ BYTE type; /* X_Reply */
+ CARD8 unused; /* not used */
+ CARD16 sequenceNumber B16;
+ CARD32 length B32;
+ CARD16 displayedBuffer B16; /* currently visible buffer */
+ CARD8 updateAction;
+ CARD8 updateHint;
+ CARD8 windowMode;
+ CARD8 unused0;
+ CARD16 unused1 B16;
+ CARD32 unused2 B32;
+ CARD32 unused3 B32;
+ CARD32 unused4 B32;
+ CARD32 unused5 B32;
+} xMbufGetMBufferAttributesReply;
+#define sz_xMbufGetMBufferAttributesReply 32
+
+typedef struct {
+ CARD8 reqType; /* always codes->major_opcode */
+ CARD8 mbufReqType; /* always X_MbufSetBufferAttributes */
+ CARD16 length B16;
+ CARD32 buffer B32;
+ CARD32 valueMask B32;
+} xMbufSetBufferAttributesReq; /* followed by values */
+#define sz_xMbufSetBufferAttributesReq 12
+
+typedef struct {
+ CARD8 reqType; /* always codes->major_opcode */
+ CARD8 mbufReqType; /* always X_MbufGetBufferAttributes */
+ CARD16 length B16;
+ CARD32 buffer B32;
+} xMbufGetBufferAttributesReq;
+#define sz_xMbufGetBufferAttributesReq 8
+
+typedef struct {
+ BYTE type; /* X_Reply */
+ CARD8 unused; /* not used */
+ CARD16 sequenceNumber B16;
+ CARD32 length B32;
+ CARD32 window B32;
+ CARD32 eventMask B32;
+ CARD16 bufferIndex B16;
+ CARD8 side;
+ CARD8 unused0;
+ CARD32 unused1 B32;
+ CARD32 unused2 B32;
+ CARD32 unused3 B32;
+} xMbufGetBufferAttributesReply;
+#define sz_xMbufGetBufferAttributesReply 32
+
+typedef struct {
+ CARD8 reqType; /* always codes->major_opcode */
+ CARD8 mbufReqType; /* always X_MbufGetBufferInfo */
+ CARD16 length B16;
+ Drawable drawable B32;
+} xMbufGetBufferInfoReq;
+#define sz_xMbufGetBufferInfoReq 8
+
+typedef struct {
+ BYTE type; /* X_Reply */
+ CARD8 unused; /* not used */
+ CARD16 sequenceNumber B16;
+ CARD32 length B32;
+ CARD16 normalInfo B16;
+ CARD16 stereoInfo B16;
+ CARD32 unused1 B32;
+ CARD32 unused2 B32;
+ CARD32 unused3 B32;
+ CARD32 unused4 B32;
+ CARD32 unused5 B32;
+} xMbufGetBufferInfoReply; /* followed by buffer infos */
+#define sz_xMbufGetBufferInfoReply 32
+
+
+typedef struct {
+ CARD8 reqType; /* always codes->major_opcode */
+ CARD8 mbufReqType; /* always X_MbufCreateStereoWindow */
+ CARD16 length B16;
+ CARD8 unused0;
+ CARD8 unused1;
+ CARD8 unused2;
+ CARD8 depth;
+ Window wid B32;
+ Window parent B32;
+ Multibuffer left B32; /* associated buffers */
+ Multibuffer right B32;
+ INT16 x B16;
+ INT16 y B16;
+ CARD16 width B16;
+ CARD16 height B16;
+ CARD16 borderWidth B16;
+#if defined(__cplusplus) || defined(c_plusplus)
+ CARD16 c_class B16;
+#else
+ CARD16 class B16;
+#endif
+ VisualID visual B32;
+ CARD32 mask B32;
+} xMbufCreateStereoWindowReq; /* followed by value list */
+#define sz_xMbufCreateStereoWindowReq 44
+
+typedef struct {
+ CARD8 reqType; /* always codes->major_opcode */
+ CARD8 mbufReqType; /* always X_MbufClearImageBufferArea */
+ CARD16 length B16;
+ Multibuffer buffer B32;
+ INT16 x B16;
+ INT16 y B16;
+ CARD16 width B16;
+ CARD16 height B16;
+ CARD8 unused0;
+ CARD8 unused1;
+ CARD8 unused2;
+ BOOL exposures;
+} xMbufClearImageBufferAreaReq;
+#define sz_xMbufClearImageBufferAreaReq 20
+
+#undef Window
+#undef Drawable
+#undef VisualID
+#undef Multibuffer
+
+
+#ifdef _MULTIBUF_SERVER_
+/* Macros for wrapping and unwrapping functions */
+
+#define SWAP_FUNC_VECTOR(pSTRUCT1,pSTRUCT2,DATA_TYPE,FUNC_NAME) \
+{ \
+ DATA_TYPE (* tmpFn)(); \
+ \
+ tmpFn = pSTRUCT1->FUNC_NAME; \
+ pSTRUCT1->FUNC_NAME = pSTRUCT2->FUNC_NAME; \
+ pSTRUCT2->FUNC_NAME = tmpFn; \
+}
+
+#if !defined(UNIXCPP) || defined(ANSICPP)
+#define WRAP_SCREEN_FUNC(pSCREEN,pPRIV,FUNC_NAME, PRIV_FUNC_NAME) \
+{ \
+ if ((pPRIV->funcsWrapped & FUNC_NAME##Mask) == 0) \
+ { \
+ pPRIV->FUNC_NAME = pSCREEN->FUNC_NAME; \
+ pSCREEN->FUNC_NAME = PRIV_FUNC_NAME; \
+ pPRIV->funcsWrapped |= FUNC_NAME##Mask; \
+ } \
+}
+
+#define UNWRAP_SCREEN_FUNC(pSCREEN,pPRIV,DATA_TYPE,FUNC_NAME) \
+{ \
+ SWAP_FUNC_VECTOR(pSCREEN,pPRIV,DATA_TYPE,FUNC_NAME); \
+ pPRIV->funcsWrapped &= ~(FUNC_NAME##Mask); \
+}
+
+#define REWRAP_SCREEN_FUNC(pSCREEN,pPRIV,DATA_TYPE,FUNC_NAME) \
+{ \
+ if (MB_SCREEN_PRIV(pSCREEN)->mbufWindowCount) \
+ { \
+ SWAP_FUNC_VECTOR(pSCREEN,pPRIV,DATA_TYPE,FUNC_NAME); \
+ pPRIV->funcsWrapped |= FUNC_NAME##Mask; \
+ } \
+}
+#else
+#define WRAP_SCREEN_FUNC(pSCREEN,pPRIV,FUNC_NAME, PRIV_FUNC_NAME) \
+{ \
+ if ((pPRIV->funcsWrapped & FUNC_NAME/**/Mask) == 0) \
+ { \
+ pPRIV->FUNC_NAME = pSCREEN->FUNC_NAME; \
+ pSCREEN->FUNC_NAME = PRIV_FUNC_NAME; \
+ pPRIV->funcsWrapped |= FUNC_NAME/**/Mask; \
+ } \
+}
+
+#define UNWRAP_SCREEN_FUNC(pSCREEN,pPRIV,DATA_TYPE,FUNC_NAME) \
+{ \
+ SWAP_FUNC_VECTOR(pSCREEN,pPRIV,DATA_TYPE,FUNC_NAME); \
+ pPRIV->funcsWrapped &= ~(FUNC_NAME/**/Mask); \
+}
+
+#define REWRAP_SCREEN_FUNC(pSCREEN,pPRIV,DATA_TYPE,FUNC_NAME) \
+{ \
+ if (MB_SCREEN_PRIV(pSCREEN)->mbufWindowCount) \
+ { \
+ SWAP_FUNC_VECTOR(pSCREEN,pPRIV,DATA_TYPE,FUNC_NAME); \
+ pPRIV->funcsWrapped |= FUNC_NAME/**/Mask; \
+ } \
+}
+#endif
+
+/* The _Multibuffer and _Multibuffers structures below refer to each other,
+ * so we need this forward declaration
+ */
+typedef struct _Multibuffers *MultibuffersPtr;
+
+/*
+ * per-Multibuffer data
+ */
+
+typedef struct _Multibuffer {
+ MultibuffersPtr pMultibuffers; /* associated window data */
+ Mask eventMask; /* MultibufferClobberNotifyMask|ExposureMask|MultibufferUpdateNotifyMask */
+ Mask otherEventMask; /* mask of all other clients event masks */
+ OtherClients *otherClients; /* other clients that want events */
+ int number; /* index of this buffer into array */
+ int side; /* always Mono */
+ int clobber; /* Unclobbered, PartiallyClobbered, FullClobbered */
+ PixmapPtr pPixmap; /* associated pixmap */
+} MultibufferRec, *MultibufferPtr;
+
+/*
+ * per-window data
+ */
+
+typedef struct _Multibuffers {
+ WindowPtr pWindow; /* associated window */
+ int numMultibuffer; /* count of buffers */
+ int refcnt; /* ref count for delete */
+ int displayedMultibuffer; /* currently active buffer */
+ int updateAction; /* Undefined, Background, Untouched, Copied */
+ int updateHint; /* Frequent, Intermittent, Static */
+ int windowMode; /* always Mono */
+
+ TimeStamp lastUpdate; /* time of last update */
+
+ unsigned short width, height; /* last known window size */
+ short x, y; /* for static gravity */
+
+ MultibufferPtr buffers; /* array of numMultibuffer buffers */
+} MultibuffersRec;
+
+/*
+ * per-screen data
+ */
+typedef struct _MultibufferScreen {
+ PositionWindowProcPtr PositionWindow; /* pWin, x,y */
+} MultibufferScreenRec, *MultibufferScreenPtr;
+
+/*
+ * per display-image-buffers request data.
+ */
+
+typedef struct _DisplayRequest {
+ struct _DisplayRequest *next;
+ TimeStamp activateTime;
+ ClientPtr pClient;
+ XID id;
+} DisplayRequestRec, *DisplayRequestPtr;
+
+#define DestroyWindowMask (1L<<0)
+#define PositionWindowMask (1L<<1)
+#define PostValidateTreeMask (1L<<2)
+#define ClipNotifyMask (1L<<3)
+#define WindowExposuresMask (1L<<4)
+#define CopyWindowMask (1L<<5)
+#define ClearToBackgroundMask (1L<<6)
+#define ChangeWindowAttributesMask (1L<<7)
+
+extern int MultibufferScreenIndex;
+extern int MultibufferWindowIndex;
+
+extern RESTYPE MultibufferDrawableResType;
+
+extern void MultibufferUpdate( /* pMbuffer, time */
+ MultibufferPtr /* pMultibuffer */,
+ CARD32 /* time */
+ );
+extern void MultibufferExpose( /* pMbuffer, pRegion */
+ MultibufferPtr /* pMultibuffer */,
+ RegionPtr /* pRegion */
+ );
+extern void MultibufferClobber( /* pMbuffer */
+ MultibufferPtr /* pMultibuffer */
+ );
+
+typedef struct _mbufWindow *mbufWindowPtr;
+
+/*
+ * per-buffer data
+ */
+
+#define MB_DISPLAYED_BUFFER(pMBWindow) \
+ ((pMBWindow)->buffers + (pMBWindow)->displayedMultibuffer)
+
+typedef struct _mbufBuffer {
+ mbufWindowPtr pMBWindow; /* associated window data */
+ Mask eventMask; /* client event mask */
+ Mask otherEventMask; /* union of other clients' event masks */
+ OtherClientsPtr otherClients; /* other clients that want events */
+ int number; /* index of this buffer into array */
+ int side; /* stero side: always Mono */
+ int clobber; /* clober state */
+ DrawablePtr pDrawable; /* associated drawable */
+} mbufBufferRec, *mbufBufferPtr;
+
+
+/*
+ * per-window data
+ */
+
+#define MB_WINDOW_PRIV(pWin) \
+ ((mbufWindowPtr)((pWin)->devPrivates[MultibufferWindowIndex].ptr))
+
+typedef struct _mbufWindow {
+ WindowPtr pWindow; /* associated window */
+ int numMultibuffer; /* count of buffers */
+ mbufBufferPtr buffers; /* array of (numMultibuffer) buffers */
+ int displayedMultibuffer; /* currently active buffer */
+ int updateAction; /* Undefined, Background,
+ Untouched, Copied */
+ int updateHint; /* Frequent, Intermittent, Static */
+ int windowMode; /* always Mono */
+ TimeStamp lastUpdate; /* time of last update */
+ short x, y; /* for static gravity */
+ unsigned short width, height; /* last known window size */
+ DevUnion devPrivate;
+} mbufWindowRec;
+
+
+/*
+ * per-screen data
+ */
+
+#define MB_SCREEN_PRIV(pScreen) \
+ ((mbufScreenPtr)((pScreen)->devPrivates[MultibufferScreenIndex].ptr))
+
+typedef struct _mbufScreen {
+ long mbufWindowCount; /* count of multibuffered windows */
+
+ /* Wrap pScreen->DestroyWindow */
+ DestroyWindowProcPtr DestroyWindow;
+ long funcsWrapped; /* flags which functions are wrapped */
+
+ /* Initialized by device-dependent section */
+ int nInfo; /* number of buffer info rec's */
+ xMbufBufferInfo *pInfo; /* buffer info (for Normal buffers) */
+
+ int (* CreateImageBuffers)(
+ WindowPtr /* pWin */,
+ int /* nbuf */,
+ XID * /* ids */,
+ int /* action */,
+ int /* hint */
+ );
+ void (* DestroyImageBuffers)(
+ WindowPtr /* pWin */
+ );
+ void (* DisplayImageBuffers)(
+ ScreenPtr /* pScreen */,
+ mbufBufferPtr * /* ppMBBuffer */,
+ mbufWindowPtr * /* ppMBWindow */,
+ int /* nbuf */
+ );
+ void (* ClearImageBufferArea)(
+ mbufBufferPtr /* pMBBuffer */,
+ short /* x */,
+ short /* y */,
+ unsigned short /* width */,
+ unsigned short /* height */,
+ Bool /* exposures */
+ );
+ Bool (* ChangeMBufferAttributes)( /* pMBWindow, vmask */
+ /* FIXME */
+ );
+ Bool (* ChangeBufferAttributes)( /* pMBBuffer, vmask */
+ /* FIXME */
+ );
+ void (* DeleteBufferDrawable)(
+ DrawablePtr /* pDrawable */
+ );
+ void (* WrapScreenFuncs)(
+ ScreenPtr /* pScreen */
+ );
+ void (* ResetProc)(
+ ScreenPtr /* pScreen */
+ );
+ DevUnion devPrivate;
+} mbufScreenRec, *mbufScreenPtr;
+
+
+/* Privates to mbufScreenRec */
+
+#ifdef _MULTIBUF_PIXMAP_
+#define MB_SCREEN_PRIV_PIXMAP(pScreen) \
+ ((mbufPixmapPrivPtr) MB_SCREEN_PRIV((pScreen))->devPrivate.ptr)
+
+typedef struct _mbufPixmapPriv
+{
+ /* Pointers to wrapped functions */
+ PositionWindowProcPtr PositionWindow; /* pWin, x,y */
+ long funcsWrapped; /* flags which functions are wrapped */
+} mbufPixmapPrivRec, *mbufPixmapPrivPtr;
+#endif /* _MULTIBUF_PIXMAP_ */
+
+
+#ifdef _MULTIBUF_BUFFER_
+
+extern int frameWindowPrivateIndex;
+
+#define MB_SCREEN_PRIV_BUFFER(pScreen) \
+ ((mbufBufferPrivPtr) MB_SCREEN_PRIV((pScreen))->devPrivate.ptr)
+
+typedef struct _mbufBufferPriv
+{
+ DevUnion *frameBuffer; /* Array of screen framebuffers */
+ DevUnion selectPlane; /* Plane(s) that select displayed buffer */
+
+ /*
+ * Note: subtractRgn and unionRgn may overlap. subtractRgn is a union
+ * of all the old clipLists of the windows that are displaying
+ * the backbuffer. unionRgn is the union of all the new clipLists
+ * of the same windows.
+ */
+
+ RegionRec backBuffer; /* Area of screen displaying back buffer */
+ RegionRec subtractRgn; /* Regions lost to backBuffer */
+ RegionRec unionRgn; /* Regions gained by backBuffer */
+ Bool rgnChanged; /* TRUE if "backBuffer" needs to be updated */
+
+ void (* CopyBufferBits)(); /* pMBWindow, srcBufferNum, dstBufferNum */
+ void (* DrawSelectPlane)(); /* pScreen, selectPlane, pRegion, bufferNum */
+
+ /* Pointers to wrapped functions */
+ PostValidateTreeProcPtr PostValidateTree; /* pParent, pChild, kind */
+ ClipNotifyProcPtr ClipNotify; /* pWin, dx, dy */
+ WindowExposuresProcPtr WindowExposures; /* pWin, pRegion */
+ CopyWindowProcPtr CopyWindow; /* pWin, oldPt, pOldRegion */
+ ClearToBackgroundProcPtr ClearToBackground; /* pWin, x,y,w,h, sendExpose */
+ ChangeWindowAttributesProcPtr ChangeWindowAttributes; /* pWin, vmask */
+ long funcsWrapped; /* flags which functions are wrapped */
+ unsigned inClearToBackground:1; /* used by WindowExposure */
+} mbufBufferPrivRec, *mbufBufferPrivPtr;
+#endif /* _MULTIBUF_BUFFER_ */
+
+#endif /* _MULTIBUF_SERVER_ */
+#endif /* _MULTIBUFST_H_ */
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