C++ SyncHandle函数代码示例

Bool SDL_NAME(XF86DGASetViewPort)(
    Display* dpy,
    int screen,
    int x, 
    int y
){
    XExtDisplayInfo *info = SDL_NAME(xdga_find_display) (dpy);
    xXF86DGASetViewPortReq *req;

    XF86DGACheckExtension (dpy, info, False);

    LockDisplay(dpy);
    GetReq(XF86DGASetViewPort, req);
    req->reqType = info->codes->major_opcode;
    req->dgaReqType = X_XF86DGASetViewPort;
    req->screen = screen;
    req->x = x;
    req->y = y;
    UnlockDisplay(dpy);
    SyncHandle();
    XSync(dpy,False);
    return True;
}

GLboolean
glAreTexturesResidentEXT(GLsizei n, const GLuint * textures,
                         GLboolean * residences)
{
    struct glx_context *const gc = __glXGetCurrentContext();

    if (gc->isDirect) {
        return GET_DISPATCH()->AreTexturesResident(n, textures, residences);
    }
    else {
        struct glx_context *const gc = __glXGetCurrentContext();
        Display *const dpy = gc->currentDpy;
        GLboolean retval = (GLboolean) 0;
        const GLuint cmdlen = 4 + __GLX_PAD((n * 4));
        if (__builtin_expect((n >= 0) && (dpy != NULL), 1)) {
            GLubyte const *pc =
                __glXSetupVendorRequest(gc, X_GLXVendorPrivateWithReply,
                                        X_GLvop_AreTexturesResidentEXT,
                                        cmdlen);
            (void) memcpy((void *) (pc + 0), (void *) (&n), 4);
            (void) memcpy((void *) (pc + 4), (void *) (textures), (n * 4));
            if (n & 3) {
                /* see comments in __indirect_glAreTexturesResident() */
                GLboolean *res4 = malloc((n + 3) & ~3);
                retval = (GLboolean) __glXReadReply(dpy, 1, res4, GL_TRUE);
                memcpy(residences, res4, n);
                free(res4);
            }
            else {
                retval = (GLboolean) __glXReadReply(dpy, 1, residences, GL_TRUE);
            }
            UnlockDisplay(dpy);
            SyncHandle();
        }
        return retval;
    }
}

int
XDrawArcs(
    register Display *dpy,
    Drawable d,
    GC gc,
    XArc *arcs,
    int n_arcs)
{
    register xPolyArcReq *req;
    register long len;

    LockDisplay(dpy);
    FlushGC(dpy, gc);
    GetReq(PolyArc,req);
    req->drawable = d;
    req->gc = gc->gid;
    len = ((long)n_arcs) * arc_scale;
    SetReqLen(req, len, 1);
    len <<= 2; /* watch out for macros... */
    Data16 (dpy, (short *) arcs, len);
    UnlockDisplay(dpy);
    SyncHandle();
    return 1;
}

void
DRI2CopyRegion(Display * dpy, XID drawable, XserverRegion region,
               CARD32 dest, CARD32 src)
{
   XExtDisplayInfo *info = DRI2FindDisplay(dpy);
   xDRI2CopyRegionReq *req;
   xDRI2CopyRegionReply rep;

   XextSimpleCheckExtension(dpy, info, dri2ExtensionName);

   LockDisplay(dpy);
   GetReq(DRI2CopyRegion, req);
   req->reqType = info->codes->major_opcode;
   req->dri2ReqType = X_DRI2CopyRegion;
   req->drawable = drawable;
   req->region = region;
   req->dest = dest;
   req->src = src;

   _XReply(dpy, (xReply *) & rep, 0, xFalse);

   UnlockDisplay(dpy);
   SyncHandle();
}

int
XGetScreenSaver(
     register Display *dpy,
     /* the following are return only vars */
     int *timeout,
     int *interval,
     int *prefer_blanking,
     int *allow_exp)  /*boolean */

{
    xGetScreenSaverReply rep;
    register xReq *req;
    LockDisplay(dpy);
    GetEmptyReq(GetScreenSaver, req);

    (void) _XReply (dpy, (xReply *)&rep, 0, xTrue);
    *timeout = rep.timeout;
    *interval = rep.interval;
    *prefer_blanking = rep.preferBlanking;
    *allow_exp = rep.allowExposures;
    UnlockDisplay(dpy);
    SyncHandle();
    return 1;
}

void XNVCTRLSetAttribute (
    Display *dpy,
    int screen,
    unsigned int display_mask,
    unsigned int attribute,
    int value
)
{
    XExtDisplayInfo *info = find_display (dpy);
    xnvCtrlSetAttributeReq *req;

    XNVCTRLSimpleCheckExtension (dpy, info);

    LockDisplay (dpy);
    GetReq (nvCtrlSetAttribute, req);
    req->reqType = info->codes->major_opcode;
    req->nvReqType = X_nvCtrlSetAttribute;
    req->screen = screen;
    req->display_mask = display_mask;
    req->attribute = attribute;
    req->value = value;
    UnlockDisplay (dpy);
    SyncHandle ();
}

int
XRemoveHost (
    register Display *dpy,
    XHostAddress *host)
{
    register xChangeHostsReq *req;
    register int length;
    XServerInterpretedAddress *siAddr;
    int addrlen;

    if (host->family == FamilyServerInterpreted) {
	siAddr = (XServerInterpretedAddress *) host->address;
	addrlen = siAddr->typelength + siAddr->valuelength + 1;
    } else {
	addrlen = host->length;
    }
    
    length = (addrlen + 3) & ~0x3;	/* round up */

    LockDisplay(dpy);
    GetReqExtra (ChangeHosts, length, req);
    req->mode = HostDelete;
    req->hostFamily = host->family;
    req->hostLength = addrlen;
    if (host->family == FamilyServerInterpreted) {
	char *dest = (char *) NEXTPTR(req,xChangeHostsReq);
	memcpy(dest, siAddr->type, siAddr->typelength);
	dest[siAddr->typelength] = '\0';
	memcpy(dest + siAddr->typelength + 1,siAddr->value,siAddr->valuelength);
    } else {
	memcpy((char *) NEXTPTR(req,xChangeHostsReq), host->address, addrlen);
    }
    UnlockDisplay(dpy);
    SyncHandle();
    return 1;
}

Status
XkbGetIndicatorState(Display *dpy,unsigned deviceSpec,unsigned *pStateRtrn)
{
    register xkbGetIndicatorStateReq *req;
    xkbGetIndicatorStateReply	rep;
    XkbInfoPtr xkbi;
    Bool ok;

    if ((dpy->flags & XlibDisplayNoXkb) ||
	(!dpy->xkb_info && !XkbUseExtension(dpy,NULL,NULL)))
	return BadAccess;
    LockDisplay(dpy);
    xkbi = dpy->xkb_info;
    GetReq(kbGetIndicatorState, req);
    req->reqType = xkbi->codes->major_opcode;
    req->xkbReqType = X_kbGetIndicatorState;
    req->deviceSpec = deviceSpec;
    ok=_XReply(dpy, (xReply *)&rep, 0, xFalse);
    if (ok && (pStateRtrn!=NULL))
	*pStateRtrn= rep.state;
    UnlockDisplay(dpy);
    SyncHandle();
    return (ok?Success:BadImplementation);
}

Status
DPMSForceLevel(Display *dpy, CARD16 level)
{
    XExtDisplayInfo *info = find_display (dpy);
    register xDPMSForceLevelReq *req;

    DPMSCheckExtension (dpy, info, 0);

    if ((level != DPMSModeOn) &&
	(level != DPMSModeStandby) &&
	(level != DPMSModeSuspend) &&
	(level != DPMSModeOff))
	return BadValue;

    LockDisplay(dpy);
    GetReq(DPMSForceLevel, req);
    req->reqType = info->codes->major_opcode;
    req->dpmsReqType = X_DPMSForceLevel;
    req->level = level;

    UnlockDisplay(dpy);
    SyncHandle();
    return 1;
}

void
XpSelectInput (
    Display       *dpy,
    XPContext     print_context,
    unsigned long event_mask
)
{
    xPrintSelectInputReq   *req;
    XExtDisplayInfo *info = (XExtDisplayInfo *) xp_find_display (dpy);

    if (XpCheckExtInit(dpy, XP_INITIAL_RELEASE) == -1)
	return; /* NoSuchExtension NULL */

    LockDisplay (dpy);

    GetReq(PrintSelectInput,req);
    req->reqType = info->codes->major_opcode;
    req->printReqType = X_PrintSelectInput;
    req->printContext = print_context;
    req->eventMask = event_mask;

    UnlockDisplay (dpy);
    SyncHandle ();
}

void
XRenderSetPictureFilter  (Display   *dpy,
			  Picture   picture,
			  const char *filter,
			  XFixed    *params,
			  int	    nparams)
{
    XRenderExtDisplayInfo		*info = XRenderFindDisplay (dpy);
    xRenderSetPictureFilterReq	*req;
    int				nbytes = strlen (filter);

    RenderSimpleCheckExtension (dpy, info);
    LockDisplay(dpy);
    GetReq(RenderSetPictureFilter, req);
    req->reqType = info->codes->major_opcode;
    req->renderReqType = X_RenderSetPictureFilter;
    req->picture = picture;
    req->nbytes = nbytes;
    req->length += ((nbytes + 3) >> 2) + nparams;
    Data (dpy, filter, nbytes);
    Data (dpy, (_Xconst char *)params, nparams << 2);
    UnlockDisplay(dpy);
    SyncHandle();
}

/**
 * Get a drawable's attribute.
 *
 * This function is used to implement \c glXGetSelectedEvent and
 * \c glXGetSelectedEventSGIX.
 *
 * \note
 * This function dynamically determines whether to use the SGIX_pbuffer
 * version of the protocol or the GLX 1.3 version of the protocol.
 *
 * \todo
 * The number of attributes returned is likely to be small, probably less than
 * 10.  Given that, this routine should try to use an array on the stack to
 * capture the reply rather than always calling Xmalloc.
 *
 * \todo
 * This function needs to be modified to work with direct-rendering drivers.
 */
static int
GetDrawableAttribute(Display * dpy, GLXDrawable drawable,
                     int attribute, unsigned int *value)
{
   __GLXdisplayPrivate *priv;
   xGLXGetDrawableAttributesReply reply;
   CARD32 *data;
   CARD8 opcode;
   unsigned int length;
   unsigned int i;
   unsigned int num_attributes;
   GLboolean use_glx_1_3;

   if ((dpy == NULL) || (drawable == 0)) {
      return 0;
   }

   priv = __glXInitialize(dpy);
   use_glx_1_3 = ((priv->majorVersion > 1) || (priv->minorVersion >= 3));

   *value = 0;


   opcode = __glXSetupForCommand(dpy);
   if (!opcode)
      return 0;

   LockDisplay(dpy);

   if (use_glx_1_3) {
      xGLXGetDrawableAttributesReq *req;

      GetReqExtra(GLXGetDrawableAttributes, 4, req);
      req->reqType = opcode;
      req->glxCode = X_GLXGetDrawableAttributes;
      req->drawable = drawable;
   }
   else {
      xGLXVendorPrivateWithReplyReq *vpreq;

      GetReqExtra(GLXVendorPrivateWithReply, 4, vpreq);
      data = (CARD32 *) (vpreq + 1);
      data[0] = (CARD32) drawable;

      vpreq->reqType = opcode;
      vpreq->glxCode = X_GLXVendorPrivateWithReply;
      vpreq->vendorCode = X_GLXvop_GetDrawableAttributesSGIX;
   }

   _XReply(dpy, (xReply *) & reply, 0, False);

   if (reply.type == X_Error) {
      UnlockDisplay(dpy);
      SyncHandle();
      return 0;
   }

   length = reply.length;
   if (length) {
      num_attributes = (use_glx_1_3) ? reply.numAttribs : length / 2;
      data = (CARD32 *) Xmalloc(length * sizeof(CARD32));
      if (data == NULL) {
         /* Throw data on the floor */
         _XEatData(dpy, length);
      }
      else {
         _XRead(dpy, (char *) data, length * sizeof(CARD32));

         /* Search the set of returned attributes for the attribute requested by
          * the caller.
          */
         for (i = 0; i < num_attributes; i++) {
            if (data[i * 2] == attribute) {
               *value = data[(i * 2) + 1];
               break;
            }
         }

#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
         {
            __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable, NULL);

//.........这里部分代码省略.........

void
XChangeDeviceProperty(Display* dpy, XDevice* dev,
                      Atom property, Atom type,
                      int format, int mode,
                      _Xconst unsigned char *data, int nelements)
{
    xChangeDevicePropertyReq   *req;
    int                         len;

    XExtDisplayInfo *info = XInput_find_display(dpy);

    LockDisplay(dpy);
    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1)
	return;

    GetReq(ChangeDeviceProperty, req);
    req->reqType    = info->codes->major_opcode;
    req->ReqType    = X_ChangeDeviceProperty;
    req->deviceid   = dev->device_id;
    req->property   = property;
    req->type       = type;
    req->mode       = mode;
    if (nelements < 0) {
	req->nUnits = 0;
	req->format = 0; /* ask for garbage, get garbage */
    } else {
	req->nUnits = nelements;
	req->format = format;
    }

    switch (req->format) {
    case 8:
	len = ((long)nelements + 3) >> 2;
	if (dpy->bigreq_size || req->length + len <= (unsigned) 65535) {
	    SetReqLen(req, len, len);
	    Data (dpy, (_Xconst char *)data, nelements);
	} /* else force BadLength */
	break;

    case 16:
	len = ((long)nelements + 1) >> 1;
	if (dpy->bigreq_size || req->length + len <= (unsigned) 65535) {
	    SetReqLen(req, len, len);
	    len = (long)nelements << 1;
	    Data16 (dpy, (_Xconst short *) data, len);
	} /* else force BadLength */
	break;

    case 32:
	len = nelements;
	if (dpy->bigreq_size || req->length + len <= (unsigned) 65535) {
	    SetReqLen(req, len, len);
	    len = (long)nelements << 2;
	    Data32 (dpy, (_Xconst long *) data, len);
	} /* else force BadLength */
	break;

    default:
	/* BadValue will be generated */ ;
    }

    UnlockDisplay(dpy);
    SyncHandle();
}

/*
 * XdbeGetVisualInfo -
 *	This function returns information about which visuals support
 *	double buffering.  The argument num_screens specifies how many
 *	elements there are in the screen_specifiers list.  Each drawable
 *	in screen_specifiers designates a screen for which the supported
 *	visuals are being requested.  If num_screens is zero, information
 *	for all screens is requested.  In this case, upon return from this
 *	function, num_screens will be set to the number of screens that were
 *	found.  If an error occurs, this function returns NULL, else it returns
 *	a pointer to a list of XdbeScreenVisualInfo structures of length
 *	num_screens.  The nth element in the returned list corresponds to the
 *	nth drawable in the screen_specifiers list, unless num_screens was
 *	passed in with the value zero, in which case the nth element in the
 *	returned list corresponds to the nth screen of the server, starting
 *	with screen zero.
 */
XdbeScreenVisualInfo *XdbeGetVisualInfo (
    Display        *dpy,
    Drawable       *screen_specifiers,
    int            *num_screens)  /* SEND and RETURN */
{
    XExtDisplayInfo *info = find_display(dpy);
    register xDbeGetVisualInfoReq *req;
    xDbeGetVisualInfoReply rep;
    XdbeScreenVisualInfo *scrVisInfo;
    int i;

    DbeCheckExtension (dpy, info, (XdbeScreenVisualInfo *)NULL);

    LockDisplay (dpy);

    DbeGetReq(DbeGetVisualInfo, req, info);
    req->length = 2 + *num_screens;
    req->n      = *num_screens;
    Data32 (dpy, screen_specifiers, (*num_screens * sizeof (CARD32)));

    if (!_XReply (dpy, (xReply *) &rep, 0, xFalse)) {
        UnlockDisplay (dpy);
        SyncHandle ();
        return NULL;
    }

    /* return the number of screens actually found if we
     * requested information about all screens (*num_screens == 0)
     */
    if (*num_screens == 0)
       *num_screens = rep.m;

    /* allocate list of visual information to be returned */
    if (!(scrVisInfo =
        (XdbeScreenVisualInfo *)Xmalloc(
        (unsigned)(*num_screens * sizeof(XdbeScreenVisualInfo))))) {
        UnlockDisplay (dpy);
        SyncHandle ();
        return NULL;
    }

    for (i = 0; i < *num_screens; i++)
    {
        int nbytes;
        int j;
        long c;

        _XRead32 (dpy, &c, sizeof(CARD32));
        scrVisInfo[i].count = c;

        nbytes = scrVisInfo[i].count * sizeof(XdbeVisualInfo);

        /* if we can not allocate the list of visual/depth info
         * then free the lists that we already allocate as well
         * as the visual info list itself
         */
        if (!(scrVisInfo[i].visinfo = (XdbeVisualInfo *)Xmalloc(
            (unsigned)nbytes))) {
            for (j = 0; j < i; j++) {
                Xfree ((char *)scrVisInfo[j].visinfo);
            }
            Xfree ((char *)scrVisInfo);
            UnlockDisplay (dpy);
            SyncHandle ();
            return NULL;
        }
    
        /* Read the visual info item into the wire structure.  Then copy each
         * element into the library structure.  The element sizes and/or
         * padding may be different in the two structures.
         */
        for (j = 0; j < scrVisInfo[i].count; j++) {
            xDbeVisInfo xvi;

            _XRead (dpy, (char *)&xvi, sizeof(xDbeVisInfo));
            scrVisInfo[i].visinfo[j].visual    = xvi.visualID;
            scrVisInfo[i].visinfo[j].depth     = xvi.depth;
            scrVisInfo[i].visinfo[j].perflevel = xvi.perfLevel;
        }

    }

    UnlockDisplay (dpy);
//.........这里部分代码省略.........

PUBLIC
Status XvMCCreateSurface(Display *dpy, XvMCContext *context, XvMCSurface *surface)
{
   XvMCContextPrivate *context_priv;
   struct pipe_context *pipe;
   XvMCSurfacePrivate *surface_priv;
   struct pipe_video_buffer tmpl;

   XVMC_MSG(XVMC_TRACE, "[XvMC] Creating surface %p.\n", surface);

   assert(dpy);

   if (!context)
      return XvMCBadContext;
   if (!surface)
      return XvMCBadSurface;

   context_priv = context->privData;
   pipe = context_priv->pipe;

   surface_priv = CALLOC(1, sizeof(XvMCSurfacePrivate));
   if (!surface_priv)
      return BadAlloc;

   memset(&tmpl, 0, sizeof(tmpl));
   tmpl.buffer_format = pipe->screen->get_video_param
   (
      pipe->screen,
      context_priv->decoder->profile,
      context_priv->decoder->entrypoint,
      PIPE_VIDEO_CAP_PREFERED_FORMAT
   );
   tmpl.chroma_format = context_priv->decoder->chroma_format;
   tmpl.width = context_priv->decoder->width;
   tmpl.height = context_priv->decoder->height;
   tmpl.interlaced = pipe->screen->get_video_param
   (
      pipe->screen,
      context_priv->decoder->profile,
      context_priv->decoder->entrypoint,
      PIPE_VIDEO_CAP_PREFERS_INTERLACED
   );

   surface_priv->video_buffer = pipe->create_video_buffer(pipe, &tmpl);
   if (!surface_priv->video_buffer) {
      FREE(surface_priv);
      return BadAlloc;
   }
   surface_priv->context = context;

   surface->surface_id = XAllocID(dpy);
   surface->context_id = context->context_id;
   surface->surface_type_id = context->surface_type_id;
   surface->width = context->width;
   surface->height = context->height;
   surface->privData = surface_priv;

   SyncHandle();

   XVMC_MSG(XVMC_TRACE, "[XvMC] Surface %p created.\n", surface);

   return Success;
}