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view src/video/Xext/Xxf86vm/XF86VMode.c @ 5067:61d53410eb41

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Fixed bug #859 CREATE_SUBDIRS helps a lot if browsing HTML documentation in a file browser. ALWAYS_DETAILED_SEC makes sure everything has at least the automatic documentation like function prototype and source references. STRIP_FROM_PATH allows you to include only the relevant portions of the files' paths, cleaning up both the file list and directory tree, though you need to change the path listed here to match wherever you put SDL. ALIASES avoids some warnings generated by C:\source\svn.libsdl.org\trunk\SDL\src\joystick\darwin\10.3.9-FIX\IOHIDLib.h. It seems Apple uses a few commands which are not normally supported by Doxygen. BUILTIN_STL_SUPPORT adds support for parsing code which makes use of the standard template library. There isn't a lot of C++ in SDL (some in bwindow at least), but this still seems like a good idea. TYPEDEF_HIDES_STRUCT means that for code like this: typedef struct A {int B;} C; C is documented as a structure containing B instead of a typedef mapped to A. EXTRACT_ALL, EXTRACT_PRIVATE, EXTRACT_STATIC, EXTRACT_LOCAL_METHODS, EXTRACT_ANON_NSPACES and INTERNAL_DOCS make sure that _everything_ is documented. CASE_SENSE_NAMES = NO avoids potential conflicts when building documentation on case insensitive file systems like NTFS and FAT32. WARN_NO_PARAMDOC lets you know when you have documented some, but not all, of the parameters of a function. This is useful when you're working on adding such documentation since it makes partially documented functions easier to spot. WARN_LOGFILE writes warnings to a seperate file instead of mixing them in with stdout. When not running in quiet mode, these warnings can be hard to spot without this flag. I added *.h.in and *.h.default to FILE_PATTERNS to generate documentation for config.h.in and config.h.default. RECURSIVE tells doxygen to look not only in the input directory, but also in subfolders. EXCLUDE avoids documenting things like test programs, examples and templates which need to be documented separately. I've used EXCLUDE_PATTERNS to exclude non-source subdirectories that often find their way into source folders (such as obj or .svn). EXAMPLE_PATH lists directories doxygen will search to find included example code. So far, SDL doesn't really use this feature, but I've listed some likely locations. SOURCE_BROWSER adds syntax highlighted source code to the HTML output. USE_HTAGS is nice, but not available on Windows. INLINE_SOURCES adds the body of a function to it's documentation so you can quickly see exactly what it does. ALPHABETICAL_INDEX generates an alphabetical list of all structures, functions, etc., which makes it much easier to find what you're looking for. IGNORE_PREFIX skips the SDL_ prefix when deciding which index page to place an item on so you don't have everything show up under "S". HTML_DYNAMIC_SECTIONS hides the includes/included by diagrams by default and adds JavaScript to allow the user to show and hide them by clicking a link. ENUM_VALUES_PER_LINE = 1 makes enums easier to read by placing each value on it's own line. GENERATE_TREEVIEW produces a two frame index page with a navigation tree on the left. I have LaTeX and man pages turned off to speed up doxygen, you may want to turn them back on yourself. I added _WIN32=1 to PREDEFINED to cause SDL to output documentation related to Win32 builds of SDL. Normally, doxygen gets confused since there are multiple definitions for various structures and formats that vary by platform. Without this doxygen can produce broken documentation or, if you're lucky, output documentation only for the dummy drivers, which isn't very useful. You need to pick a platform. GENERATE_TAGFILE produces a file which can be used to link other doxygen documentation to the SDL documentation. CLASS_DIAGRAMS turns on class diagrams even when dot is not available. HAVE_DOT tells doxygen to try to use dot to generate diagrams. TEMPLATE_RELATIONS and INCLUDE_GRAPH add additional diagrams to the documentation. DOT_MULTI_TARGETS speeds up dot. OUTPUT_DIRECTORY, INPUT and other paths reflect the fact that this Doxyfile is intended to process src as well as include and is being run from a separate subdirectory. Doxygen produces several temporary files while it's running and if interrupted, can leave those files behind. It's easier to clean up if there aren't a hundred or so files in the same folder. I typically run doxygen in SDL/doxy and set the output directory to '.'. Since doxygen puts it's output in subfolders by type, this keeps things pretty well organised. You could use '../doc' instead and get the same results.
author Sam Lantinga <slouken@libsdl.org>
date Fri, 21 Jan 2011 12:57:01 -0800
parents 81dde1b00bf1
children
line wrap: on
line source

/* $XConsortium: XF86VMode.c /main/2 1995/11/14 18:17:58 kaleb $ */
/* $XFree86: xc/lib/Xxf86vm/XF86VMode.c,v 3.32 2001/07/25 15:04:54 dawes Exp $ */
/*

Copyright (c) 1995  Kaleb S. KEITHLEY

Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:

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 Kaleb S. KEITHLEY 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 Kaleb S. KEITHLEY 
shall not be used in advertising or otherwise to promote the sale, use 
or other dealings in this Software without prior written authorization
from Kaleb S. KEITHLEY.

*/
/* $XConsortium: XF86VMode.c /main/4 1996/01/16 07:52:25 kaleb CHECKEDOUT $ */

/* THIS IS NOT AN X CONSORTIUM STANDARD */

#define NEED_EVENTS
#define NEED_REPLIES

#ifndef XBUILD_IN_CLIENT

/* Apparently some X11 systems can't include this multiple times... */
#ifndef SDL_INCLUDED_XLIBINT_H
#define SDL_INCLUDED_XLIBINT_H 1
#include <X11/Xlibint.h>
#endif

#include "../extensions/xf86vmstr.h"
#include "../extensions/Xext.h"
#include "../extensions/extutil.h"
#else
#include "include/extensions/xf86vmstr.h"
#include "include/extensions/Xext.h"
#include "include/extensions/extutil.h"
#endif

#ifdef DEBUG
#include <stdio.h>
#endif

#ifndef MODE_BAD
#define MODE_BAD 255
#endif

static XExtensionInfo _xf86vidmode_info_data;
static XExtensionInfo *xf86vidmode_info = &_xf86vidmode_info_data;
static char *xf86vidmode_extension_name = XF86VIDMODENAME;

#define XF86VidModeCheckExtension(dpy,i,val) \
  XextCheckExtension (dpy, i, xf86vidmode_extension_name, val)

/*****************************************************************************
 *                                                                           *
 *			   private utility routines                          *
 *                                                                           *
 *****************************************************************************/

static XEXT_CLOSE_DISPLAY_PROTO(close_display);
static /* const */ XExtensionHooks xf86vidmode_extension_hooks = {
    NULL,                       /* create_gc */
    NULL,                       /* copy_gc */
    NULL,                       /* flush_gc */
    NULL,                       /* free_gc */
    NULL,                       /* create_font */
    NULL,                       /* free_font */
    close_display,              /* close_display */
    NULL,                       /* wire_to_event */
    NULL,                       /* event_to_wire */
    NULL,                       /* error */
    NULL,                       /* error_string */
};

static
XEXT_GENERATE_FIND_DISPLAY(find_display, xf86vidmode_info,
                           xf86vidmode_extension_name,
                           &xf86vidmode_extension_hooks, 0, NULL)
     static XEXT_GENERATE_CLOSE_DISPLAY(close_display, xf86vidmode_info)
/*****************************************************************************
 *                                                                           *
 *		    public XFree86-VidMode Extension routines                *
 *                                                                           *
 *****************************************************************************/
  Bool
SDL_NAME(XF86VidModeQueryExtension) (dpy, event_basep, error_basep)
     Display *dpy;
     int *event_basep, *error_basep;
{
    XExtDisplayInfo *info = find_display(dpy);

    if (XextHasExtension(info)) {
        *event_basep = info->codes->first_event;
        *error_basep = info->codes->first_error;
        return True;
    } else {
        return False;
    }
}

Bool SDL_NAME(XF86VidModeQueryVersion) (dpy, majorVersion, minorVersion)
     Display *
         dpy;
     int *
         majorVersion;
     int *
         minorVersion;
{
    XExtDisplayInfo *info = find_display(dpy);
    xXF86VidModeQueryVersionReply rep;
    xXF86VidModeQueryVersionReq *req;

    XF86VidModeCheckExtension(dpy, info, False);

    LockDisplay(dpy);
    GetReq(XF86VidModeQueryVersion, req);
    req->reqType = info->codes->major_opcode;
    req->xf86vidmodeReqType = X_XF86VidModeQueryVersion;
    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
        UnlockDisplay(dpy);
        SyncHandle();
        return False;
    }
    *majorVersion = rep.majorVersion;
    *minorVersion = rep.minorVersion;
    UnlockDisplay(dpy);
    SyncHandle();
    if (*majorVersion >= 2)
        SDL_NAME(XF86VidModeSetClientVersion) (dpy);
    return True;
}

Bool SDL_NAME(XF86VidModeSetClientVersion) (Display * dpy)
{
    XExtDisplayInfo *info = find_display(dpy);
    xXF86VidModeSetClientVersionReq *req;

    XF86VidModeCheckExtension(dpy, info, False);

    LockDisplay(dpy);
    GetReq(XF86VidModeSetClientVersion, req);
    req->reqType = info->codes->major_opcode;
    req->xf86vidmodeReqType = X_XF86VidModeSetClientVersion;
    req->major = XF86VIDMODE_MAJOR_VERSION;
    req->minor = XF86VIDMODE_MINOR_VERSION;
    UnlockDisplay(dpy);
    SyncHandle();
    return True;
}

Bool
SDL_NAME(XF86VidModeSetGamma) (Display * dpy, int screen,
                               SDL_NAME(XF86VidModeGamma) * Gamma)
{
    XExtDisplayInfo *info = find_display(dpy);
    xXF86VidModeSetGammaReq *req;

    XF86VidModeCheckExtension(dpy, info, False);

    LockDisplay(dpy);
    GetReq(XF86VidModeSetGamma, req);
    req->reqType = info->codes->major_opcode;
    req->xf86vidmodeReqType = X_XF86VidModeSetGamma;
    req->screen = screen;
    req->red = (CARD32) (Gamma->red * 10000.);
    req->green = (CARD32) (Gamma->green * 10000.);
    req->blue = (CARD32) (Gamma->blue * 10000.);
    UnlockDisplay(dpy);
    SyncHandle();
    return True;
}

Bool
SDL_NAME(XF86VidModeGetGamma) (Display * dpy, int screen,
                               SDL_NAME(XF86VidModeGamma) * Gamma)
{
    XExtDisplayInfo *info = find_display(dpy);
    xXF86VidModeGetGammaReply rep;
    xXF86VidModeGetGammaReq *req;

    XF86VidModeCheckExtension(dpy, info, False);

    LockDisplay(dpy);
    GetReq(XF86VidModeGetGamma, req);
    req->reqType = info->codes->major_opcode;
    req->xf86vidmodeReqType = X_XF86VidModeGetGamma;
    req->screen = screen;
    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
        UnlockDisplay(dpy);
        SyncHandle();
        return False;
    }
    Gamma->red = ((float) rep.red) / 10000.;
    Gamma->green = ((float) rep.green) / 10000.;
    Gamma->blue = ((float) rep.blue) / 10000.;
    UnlockDisplay(dpy);
    SyncHandle();
    return True;
}

Bool SDL_NAME(XF86VidModeGetModeLine) (dpy, screen, dotclock, modeline)
     Display *
         dpy;
     int
         screen;
     int *
         dotclock;
SDL_NAME(XF86VidModeModeLine) * modeline;
{
    XExtDisplayInfo *info = find_display(dpy);
    xXF86VidModeGetModeLineReply rep;
    xXF86OldVidModeGetModeLineReply oldrep;
    xXF86VidModeGetModeLineReq *req;
    int majorVersion, minorVersion;

    XF86VidModeCheckExtension(dpy, info, False);
    SDL_NAME(XF86VidModeQueryVersion) (dpy, &majorVersion, &minorVersion);

    LockDisplay(dpy);
    GetReq(XF86VidModeGetModeLine, req);
    req->reqType = info->codes->major_opcode;
    req->xf86vidmodeReqType = X_XF86VidModeGetModeLine;
    req->screen = screen;

    if (majorVersion < 2) {
        if (!_XReply(dpy, (xReply *) & oldrep,
                     (SIZEOF(xXF86OldVidModeGetModeLineReply) -
                      SIZEOF(xReply)) >> 2, xFalse)) {
            UnlockDisplay(dpy);
            SyncHandle();
            return False;
        }
        *dotclock = oldrep.dotclock;
        modeline->hdisplay = oldrep.hdisplay;
        modeline->hsyncstart = oldrep.hsyncstart;
        modeline->hsyncend = oldrep.hsyncend;
        modeline->htotal = oldrep.htotal;
        modeline->hskew = 0;
        modeline->vdisplay = oldrep.vdisplay;
        modeline->vsyncstart = oldrep.vsyncstart;
        modeline->vsyncend = oldrep.vsyncend;
        modeline->vtotal = oldrep.vtotal;
        modeline->flags = oldrep.flags;
        modeline->privsize = oldrep.privsize;
    } else {
        if (!_XReply(dpy, (xReply *) & rep,
                     (SIZEOF(xXF86VidModeGetModeLineReply) -
                      SIZEOF(xReply)) >> 2, xFalse)) {
            UnlockDisplay(dpy);
            SyncHandle();
            return False;
        }
        *dotclock = rep.dotclock;
        modeline->hdisplay = rep.hdisplay;
        modeline->hsyncstart = rep.hsyncstart;
        modeline->hsyncend = rep.hsyncend;
        modeline->htotal = rep.htotal;
        modeline->hskew = rep.hskew;
        modeline->vdisplay = rep.vdisplay;
        modeline->vsyncstart = rep.vsyncstart;
        modeline->vsyncend = rep.vsyncend;
        modeline->vtotal = rep.vtotal;
        modeline->flags = rep.flags;
        modeline->privsize = rep.privsize;
    }

    if (modeline->privsize > 0) {
        if (!(modeline->private = Xcalloc(modeline->privsize, sizeof(INT32)))) {
            _XEatData(dpy, (modeline->privsize) * sizeof(INT32));
            Xfree(modeline->private);
            return False;
        }
        _XRead(dpy, (char *) modeline->private,
               modeline->privsize * sizeof(INT32));
    } else {
        modeline->private = NULL;
    }
    UnlockDisplay(dpy);
    SyncHandle();
    return True;
}

Bool
SDL_NAME(XF86VidModeGetAllModeLines) (dpy, screen, modecount, modelinesPtr)
     Display *dpy;
     int screen;
     int *modecount;
SDL_NAME(XF86VidModeModeInfo) *** modelinesPtr;
{
    XExtDisplayInfo *info = find_display(dpy);
    xXF86VidModeGetAllModeLinesReply rep;
    xXF86VidModeGetAllModeLinesReq *req;
    SDL_NAME(XF86VidModeModeInfo) * mdinfptr, **modelines;
    xXF86VidModeModeInfo xmdline;
    xXF86OldVidModeModeInfo oldxmdline;
    int i;
    int majorVersion, minorVersion;
    Bool protocolBug = False;

    XF86VidModeCheckExtension(dpy, info, False);

    /*
     * Note: There was a bug in the protocol implementation in versions
     * 0.x with x < 8 (the .private field wasn't being passed over the wire).
     * Check the server's version, and accept the old format if appropriate.
     */

    SDL_NAME(XF86VidModeQueryVersion) (dpy, &majorVersion, &minorVersion);
    if (majorVersion == 0 && minorVersion < 8) {
        protocolBug = True;
#ifdef DEBUG
        fprintf(stderr, "XF86VidModeGetAllModeLines: Warning: Xserver is"
                "running an old version (%d.%d)\n", majorVersion,
                minorVersion);
#endif
    }

    LockDisplay(dpy);
    GetReq(XF86VidModeGetAllModeLines, req);
    req->reqType = info->codes->major_opcode;
    req->xf86vidmodeReqType = X_XF86VidModeGetAllModeLines;
    req->screen = screen;
    if (!_XReply(dpy, (xReply *) & rep,
                 (SIZEOF(xXF86VidModeGetAllModeLinesReply) -
                  SIZEOF(xReply)) >> 2, xFalse)) {
        UnlockDisplay(dpy);
        SyncHandle();
        return False;
    }

    *modecount = rep.modecount;

    if (!
        (modelines =
         (SDL_NAME(XF86VidModeModeInfo) **) Xcalloc(rep.modecount,
                                                    sizeof(SDL_NAME
                                                           (XF86VidModeModeInfo)
                                                           *) +
                                                    sizeof(SDL_NAME
                                                           (XF86VidModeModeInfo)))))
    {
        if (majorVersion < 2)
            _XEatData(dpy, (rep.modecount) * sizeof(xXF86OldVidModeModeInfo));
        else
            _XEatData(dpy, (rep.modecount) * sizeof(xXF86VidModeModeInfo));
        Xfree(modelines);
        UnlockDisplay(dpy);
        SyncHandle();
        return False;
    }
    mdinfptr = (SDL_NAME(XF86VidModeModeInfo) *) ((char *) modelines
                                                  +
                                                  rep.modecount *
                                                  sizeof(SDL_NAME
                                                         (XF86VidModeModeInfo)
                                                         *));

    for (i = 0; i < rep.modecount; i++) {
        modelines[i] = mdinfptr++;
        if (majorVersion < 2) {
            _XRead(dpy, (char *) &oldxmdline,
                   sizeof(xXF86OldVidModeModeInfo));
            modelines[i]->dotclock = oldxmdline.dotclock;
            modelines[i]->hdisplay = oldxmdline.hdisplay;
            modelines[i]->hsyncstart = oldxmdline.hsyncstart;
            modelines[i]->hsyncend = oldxmdline.hsyncend;
            modelines[i]->htotal = oldxmdline.htotal;
            modelines[i]->hskew = 0;
            modelines[i]->vdisplay = oldxmdline.vdisplay;
            modelines[i]->vsyncstart = oldxmdline.vsyncstart;
            modelines[i]->vsyncend = oldxmdline.vsyncend;
            modelines[i]->vtotal = oldxmdline.vtotal;
            modelines[i]->flags = oldxmdline.flags;
            if (protocolBug) {
                modelines[i]->privsize = 0;
                modelines[i]->private = NULL;
            } else {
                modelines[i]->privsize = oldxmdline.privsize;
                if (oldxmdline.privsize > 0) {
                    if (!(modelines[i]->private =
                          Xcalloc(oldxmdline.privsize, sizeof(INT32)))) {
                        _XEatData(dpy, (oldxmdline.privsize) * sizeof(INT32));
                        Xfree(modelines[i]->private);
                    } else {
                        _XRead(dpy, (char *) modelines[i]->private,
                               oldxmdline.privsize * sizeof(INT32));
                    }
                } else {
                    modelines[i]->private = NULL;
                }
            }
        } else {
            _XRead(dpy, (char *) &xmdline, sizeof(xXF86VidModeModeInfo));
            modelines[i]->dotclock = xmdline.dotclock;
            modelines[i]->hdisplay = xmdline.hdisplay;
            modelines[i]->hsyncstart = xmdline.hsyncstart;
            modelines[i]->hsyncend = xmdline.hsyncend;
            modelines[i]->htotal = xmdline.htotal;
            modelines[i]->hskew = xmdline.hskew;
            modelines[i]->vdisplay = xmdline.vdisplay;
            modelines[i]->vsyncstart = xmdline.vsyncstart;
            modelines[i]->vsyncend = xmdline.vsyncend;
            modelines[i]->vtotal = xmdline.vtotal;
            modelines[i]->flags = xmdline.flags;
            if (protocolBug) {
                modelines[i]->privsize = 0;
                modelines[i]->private = NULL;
            } else {
                modelines[i]->privsize = xmdline.privsize;
                if (xmdline.privsize > 0) {
                    if (!(modelines[i]->private =
                          Xcalloc(xmdline.privsize, sizeof(INT32)))) {
                        _XEatData(dpy, (xmdline.privsize) * sizeof(INT32));
                        Xfree(modelines[i]->private);
                    } else {
                        _XRead(dpy, (char *) modelines[i]->private,
                               xmdline.privsize * sizeof(INT32));
                    }
                } else {
                    modelines[i]->private = NULL;
                }
            }
        }
    }
    *modelinesPtr = modelines;
    UnlockDisplay(dpy);
    SyncHandle();
    return True;
}

/*
 * GetReq replacement for use with VidMode protocols earlier than 2.0
 */
#if !defined(UNIXCPP) || defined(ANSICPP)
#define GetOldReq(name, oldname, req) \
        WORD64ALIGN\
	if ((dpy->bufptr + SIZEOF(x##oldname##Req)) > dpy->bufmax)\
		_XFlush(dpy);\
	req = (x##oldname##Req *)(dpy->last_req = dpy->bufptr);\
	req->reqType = X_##name;\
	req->length = (SIZEOF(x##oldname##Req))>>2;\
	dpy->bufptr += SIZEOF(x##oldname##Req);\
	dpy->request++

#else /* non-ANSI C uses empty comment instead of "##" for token concatenation */
#define GetOldReq(name, oldname, req) \
        WORD64ALIGN\
	if ((dpy->bufptr + SIZEOF(x/**/oldname/**/Req)) > dpy->bufmax)\
		_XFlush(dpy);\
	req = (x/**/oldname/**/Req *)(dpy->last_req = dpy->bufptr);\
	req->reqType = X_/**/name;\
	req->length = (SIZEOF(x/**/oldname/**/Req))>>2;\
	dpy->bufptr += SIZEOF(x/**/oldname/**/Req);\
	dpy->request++
#endif

Bool
SDL_NAME(XF86VidModeAddModeLine) (dpy, screen, newmodeline, aftermodeline)
     Display *dpy;
     int screen;
SDL_NAME(XF86VidModeModeInfo) * newmodeline;
SDL_NAME(XF86VidModeModeInfo) * aftermodeline;
{
    XExtDisplayInfo *info = find_display(dpy);
    xXF86VidModeAddModeLineReq *req;
    xXF86OldVidModeAddModeLineReq *oldreq;
    int majorVersion, minorVersion;

    XF86VidModeCheckExtension(dpy, info, False);
    SDL_NAME(XF86VidModeQueryVersion) (dpy, &majorVersion, &minorVersion);

    LockDisplay(dpy);
    if (majorVersion < 2) {
        GetOldReq(XF86VidModeAddModeLine, XF86OldVidModeAddModeLine, oldreq);
        oldreq->reqType = info->codes->major_opcode;
        oldreq->xf86vidmodeReqType = X_XF86VidModeAddModeLine;
        oldreq->screen = screen;
        oldreq->dotclock = newmodeline->dotclock;
        oldreq->hdisplay = newmodeline->hdisplay;
        oldreq->hsyncstart = newmodeline->hsyncstart;
        oldreq->hsyncend = newmodeline->hsyncend;
        oldreq->htotal = newmodeline->htotal;
        oldreq->vdisplay = newmodeline->vdisplay;
        oldreq->vsyncstart = newmodeline->vsyncstart;
        oldreq->vsyncend = newmodeline->vsyncend;
        oldreq->vtotal = newmodeline->vtotal;
        oldreq->flags = newmodeline->flags;
        oldreq->privsize = newmodeline->privsize;
        if (aftermodeline != NULL) {
            oldreq->after_dotclock = aftermodeline->dotclock;
            oldreq->after_hdisplay = aftermodeline->hdisplay;
            oldreq->after_hsyncstart = aftermodeline->hsyncstart;
            oldreq->after_hsyncend = aftermodeline->hsyncend;
            oldreq->after_htotal = aftermodeline->htotal;
            oldreq->after_vdisplay = aftermodeline->vdisplay;
            oldreq->after_vsyncstart = aftermodeline->vsyncstart;
            oldreq->after_vsyncend = aftermodeline->vsyncend;
            oldreq->after_vtotal = aftermodeline->vtotal;
            oldreq->after_flags = aftermodeline->flags;
        } else {
            oldreq->after_dotclock = 0;
            oldreq->after_hdisplay = 0;
            oldreq->after_hsyncstart = 0;
            oldreq->after_hsyncend = 0;
            oldreq->after_htotal = 0;
            oldreq->after_vdisplay = 0;
            oldreq->after_vsyncstart = 0;
            oldreq->after_vsyncend = 0;
            oldreq->after_vtotal = 0;
            oldreq->after_flags = 0;
        }
        if (newmodeline->privsize) {
            oldreq->length += newmodeline->privsize;
            Data32(dpy, (long *) newmodeline->private,
                   newmodeline->privsize * sizeof(INT32));
        }
    } else {
        GetReq(XF86VidModeAddModeLine, req);
        req->reqType = info->codes->major_opcode;
        req->xf86vidmodeReqType = X_XF86VidModeAddModeLine;
        req->screen = screen;
        req->dotclock = newmodeline->dotclock;
        req->hdisplay = newmodeline->hdisplay;
        req->hsyncstart = newmodeline->hsyncstart;
        req->hsyncend = newmodeline->hsyncend;
        req->htotal = newmodeline->htotal;
        req->hskew = newmodeline->hskew;
        req->vdisplay = newmodeline->vdisplay;
        req->vsyncstart = newmodeline->vsyncstart;
        req->vsyncend = newmodeline->vsyncend;
        req->vtotal = newmodeline->vtotal;
        req->flags = newmodeline->flags;
        req->privsize = newmodeline->privsize;
        if (aftermodeline != NULL) {
            req->after_dotclock = aftermodeline->dotclock;
            req->after_hdisplay = aftermodeline->hdisplay;
            req->after_hsyncstart = aftermodeline->hsyncstart;
            req->after_hsyncend = aftermodeline->hsyncend;
            req->after_htotal = aftermodeline->htotal;
            req->after_hskew = aftermodeline->hskew;
            req->after_vdisplay = aftermodeline->vdisplay;
            req->after_vsyncstart = aftermodeline->vsyncstart;
            req->after_vsyncend = aftermodeline->vsyncend;
            req->after_vtotal = aftermodeline->vtotal;
            req->after_flags = aftermodeline->flags;
        } else {
            req->after_dotclock = 0;
            req->after_hdisplay = 0;
            req->after_hsyncstart = 0;
            req->after_hsyncend = 0;
            req->after_htotal = 0;
            req->after_hskew = 0;
            req->after_vdisplay = 0;
            req->after_vsyncstart = 0;
            req->after_vsyncend = 0;
            req->after_vtotal = 0;
            req->after_flags = 0;
        }
        if (newmodeline->privsize) {
            req->length += newmodeline->privsize;
            Data32(dpy, (long *) newmodeline->private,
                   newmodeline->privsize * sizeof(INT32));
        }
    }
    UnlockDisplay(dpy);
    SyncHandle();
    return True;
}

Bool SDL_NAME(XF86VidModeDeleteModeLine) (dpy, screen, modeline)
     Display *
         dpy;
     int
         screen;
SDL_NAME(XF86VidModeModeInfo) * modeline;
{
    XExtDisplayInfo *info = find_display(dpy);
    xXF86VidModeDeleteModeLineReq *req;
    xXF86OldVidModeDeleteModeLineReq *oldreq;
    int majorVersion, minorVersion;

    XF86VidModeCheckExtension(dpy, info, 0);
    SDL_NAME(XF86VidModeQueryVersion) (dpy, &majorVersion, &minorVersion);

    LockDisplay(dpy);
    if (majorVersion < 2) {
        GetOldReq(XF86VidModeDeleteModeLine, XF86OldVidModeDeleteModeLine,
                  oldreq);
        oldreq->reqType = info->codes->major_opcode;
        oldreq->xf86vidmodeReqType = X_XF86VidModeDeleteModeLine;
        oldreq->screen = screen;
        oldreq->dotclock = modeline->dotclock;
        oldreq->hdisplay = modeline->hdisplay;
        oldreq->hsyncstart = modeline->hsyncstart;
        oldreq->hsyncend = modeline->hsyncend;
        oldreq->htotal = modeline->htotal;
        oldreq->vdisplay = modeline->vdisplay;
        oldreq->vsyncstart = modeline->vsyncstart;
        oldreq->vsyncend = modeline->vsyncend;
        oldreq->vtotal = modeline->vtotal;
        oldreq->flags = modeline->flags;
        oldreq->privsize = modeline->privsize;
        if (modeline->privsize) {
            oldreq->length += modeline->privsize;
            Data32(dpy, (long *) modeline->private,
                   modeline->privsize * sizeof(INT32));
        }
    } else {
        GetReq(XF86VidModeDeleteModeLine, req);
        req->reqType = info->codes->major_opcode;
        req->xf86vidmodeReqType = X_XF86VidModeDeleteModeLine;
        req->screen = screen;
        req->dotclock = modeline->dotclock;
        req->hdisplay = modeline->hdisplay;
        req->hsyncstart = modeline->hsyncstart;
        req->hsyncend = modeline->hsyncend;
        req->htotal = modeline->htotal;
        req->hskew = modeline->hskew;
        req->vdisplay = modeline->vdisplay;
        req->vsyncstart = modeline->vsyncstart;
        req->vsyncend = modeline->vsyncend;
        req->vtotal = modeline->vtotal;
        req->flags = modeline->flags;
        req->privsize = modeline->privsize;
        if (modeline->privsize) {
            req->length += modeline->privsize;
            Data32(dpy, (long *) modeline->private,
                   modeline->privsize * sizeof(INT32));
        }
    }
    UnlockDisplay(dpy);
    SyncHandle();
    return True;
}

Bool SDL_NAME(XF86VidModeModModeLine) (dpy, screen, modeline)
     Display *
         dpy;
     int
         screen;
SDL_NAME(XF86VidModeModeLine) * modeline;
{
    XExtDisplayInfo *info = find_display(dpy);
    xXF86VidModeModModeLineReq *req;
    xXF86OldVidModeModModeLineReq *oldreq;
    int majorVersion, minorVersion;

    XF86VidModeCheckExtension(dpy, info, 0);
    SDL_NAME(XF86VidModeQueryVersion) (dpy, &majorVersion, &minorVersion);

    LockDisplay(dpy);
    if (majorVersion < 2) {
        GetOldReq(XF86VidModeModModeLine, XF86OldVidModeModModeLine, oldreq);
        oldreq->reqType = info->codes->major_opcode;
        oldreq->xf86vidmodeReqType = X_XF86VidModeModModeLine;
        oldreq->screen = screen;
        oldreq->hdisplay = modeline->hdisplay;
        oldreq->hsyncstart = modeline->hsyncstart;
        oldreq->hsyncend = modeline->hsyncend;
        oldreq->htotal = modeline->htotal;
        oldreq->vdisplay = modeline->vdisplay;
        oldreq->vsyncstart = modeline->vsyncstart;
        oldreq->vsyncend = modeline->vsyncend;
        oldreq->vtotal = modeline->vtotal;
        oldreq->flags = modeline->flags;
        oldreq->privsize = modeline->privsize;
        if (modeline->privsize) {
            oldreq->length += modeline->privsize;
            Data32(dpy, (long *) modeline->private,
                   modeline->privsize * sizeof(INT32));
        }
    } else {
        GetReq(XF86VidModeModModeLine, req);
        req->reqType = info->codes->major_opcode;
        req->xf86vidmodeReqType = X_XF86VidModeModModeLine;
        req->screen = screen;
        req->hdisplay = modeline->hdisplay;
        req->hsyncstart = modeline->hsyncstart;
        req->hsyncend = modeline->hsyncend;
        req->htotal = modeline->htotal;
        req->hskew = modeline->hskew;
        req->vdisplay = modeline->vdisplay;
        req->vsyncstart = modeline->vsyncstart;
        req->vsyncend = modeline->vsyncend;
        req->vtotal = modeline->vtotal;
        req->flags = modeline->flags;
        req->privsize = modeline->privsize;
        if (modeline->privsize) {
            req->length += modeline->privsize;
            Data32(dpy, (long *) modeline->private,
                   modeline->privsize * sizeof(INT32));
        }
    }
    UnlockDisplay(dpy);
    SyncHandle();
    return True;
}

Status SDL_NAME(XF86VidModeValidateModeLine) (dpy, screen, modeline)
     Display *
         dpy;
     int
         screen;
SDL_NAME(XF86VidModeModeInfo) * modeline;
{
    XExtDisplayInfo *info = find_display(dpy);
    xXF86VidModeValidateModeLineReq *req;
    xXF86OldVidModeValidateModeLineReq *oldreq;
    xXF86VidModeValidateModeLineReply rep;
    int majorVersion, minorVersion;

    XF86VidModeCheckExtension(dpy, info, 0);
    SDL_NAME(XF86VidModeQueryVersion) (dpy, &majorVersion, &minorVersion);

    LockDisplay(dpy);

    if (majorVersion < 2) {
        GetOldReq(XF86VidModeValidateModeLine,
                  XF86OldVidModeValidateModeLine, oldreq);
        oldreq->reqType = info->codes->major_opcode;
        oldreq->xf86vidmodeReqType = X_XF86VidModeValidateModeLine;
        oldreq->screen = screen;
        oldreq->dotclock = modeline->dotclock;
        oldreq->hdisplay = modeline->hdisplay;
        oldreq->hsyncstart = modeline->hsyncstart;
        oldreq->hsyncend = modeline->hsyncend;
        oldreq->htotal = modeline->htotal;
        oldreq->vdisplay = modeline->vdisplay;
        oldreq->vsyncstart = modeline->vsyncstart;
        oldreq->vsyncend = modeline->vsyncend;
        oldreq->vtotal = modeline->vtotal;
        oldreq->flags = modeline->flags;
        oldreq->privsize = modeline->privsize;
        if (modeline->privsize) {
            oldreq->length += modeline->privsize;
            Data32(dpy, (long *) modeline->private,
                   modeline->privsize * sizeof(INT32));
        }
    } else {
        GetReq(XF86VidModeValidateModeLine, req);
        req->reqType = info->codes->major_opcode;
        req->xf86vidmodeReqType = X_XF86VidModeValidateModeLine;
        req->screen = screen;
        req->dotclock = modeline->dotclock;
        req->hdisplay = modeline->hdisplay;
        req->hsyncstart = modeline->hsyncstart;
        req->hsyncend = modeline->hsyncend;
        req->htotal = modeline->htotal;
        req->hskew = modeline->hskew;
        req->vdisplay = modeline->vdisplay;
        req->vsyncstart = modeline->vsyncstart;
        req->vsyncend = modeline->vsyncend;
        req->vtotal = modeline->vtotal;
        req->flags = modeline->flags;
        req->privsize = modeline->privsize;
        if (modeline->privsize) {
            req->length += modeline->privsize;
            Data32(dpy, (long *) modeline->private,
                   modeline->privsize * sizeof(INT32));
        }
    }
    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
        UnlockDisplay(dpy);
        SyncHandle();
        return MODE_BAD;
    }
    UnlockDisplay(dpy);
    SyncHandle();
    return rep.status;
}

Bool SDL_NAME(XF86VidModeSwitchMode) (dpy, screen, zoom)
     Display *
         dpy;
     int
         screen;
     int
         zoom;
{
    XExtDisplayInfo *info = find_display(dpy);
    xXF86VidModeSwitchModeReq *req;

    XF86VidModeCheckExtension(dpy, info, False);

    LockDisplay(dpy);
    GetReq(XF86VidModeSwitchMode, req);
    req->reqType = info->codes->major_opcode;
    req->xf86vidmodeReqType = X_XF86VidModeSwitchMode;
    req->screen = screen;
    req->zoom = zoom;
    UnlockDisplay(dpy);
    SyncHandle();
    return True;
}

Bool SDL_NAME(XF86VidModeSwitchToMode) (dpy, screen, modeline)
     Display *
         dpy;
     int
         screen;
SDL_NAME(XF86VidModeModeInfo) * modeline;
{
    XExtDisplayInfo *info = find_display(dpy);
    xXF86VidModeSwitchToModeReq *req;
    xXF86OldVidModeSwitchToModeReq *oldreq;
    int majorVersion, minorVersion;
    Bool protocolBug = False;

    XF86VidModeCheckExtension(dpy, info, False);

    /*
     * Note: There was a bug in the protocol implementation in versions
     * 0.x with x < 8 (the .private field wasn't expected to be sent over
     * the wire).  Check the server's version, and accept the old format
     * if appropriate.
     */

    SDL_NAME(XF86VidModeQueryVersion) (dpy, &majorVersion, &minorVersion);
    if (majorVersion == 0 && minorVersion < 8) {
        protocolBug = True;
#ifdef DEBUG
        fprintf(stderr, "XF86VidModeSwitchToMode: Warning: Xserver is"
                "running an old version (%d.%d)\n", majorVersion,
                minorVersion);
#endif
    }

    LockDisplay(dpy);
    if (majorVersion < 2) {
        GetOldReq(XF86VidModeSwitchToMode, XF86OldVidModeSwitchToMode,
                  oldreq);
        oldreq->reqType = info->codes->major_opcode;
        oldreq->xf86vidmodeReqType = X_XF86VidModeSwitchToMode;
        oldreq->screen = screen;
        oldreq->dotclock = modeline->dotclock;
        oldreq->hdisplay = modeline->hdisplay;
        oldreq->hsyncstart = modeline->hsyncstart;
        oldreq->hsyncend = modeline->hsyncend;
        oldreq->htotal = modeline->htotal;
        oldreq->vdisplay = modeline->vdisplay;
        oldreq->vsyncstart = modeline->vsyncstart;
        oldreq->vsyncend = modeline->vsyncend;
        oldreq->vtotal = modeline->vtotal;
        oldreq->flags = modeline->flags;
        if (protocolBug) {
            oldreq->privsize = 0;
        } else {
            oldreq->privsize = modeline->privsize;
            if (modeline->privsize) {
                oldreq->length += modeline->privsize;
                Data32(dpy, (long *) modeline->private,
                       modeline->privsize * sizeof(INT32));
            }
        }
    } else {
        GetReq(XF86VidModeSwitchToMode, req);
        req->reqType = info->codes->major_opcode;
        req->xf86vidmodeReqType = X_XF86VidModeSwitchToMode;
        req->screen = screen;
        req->dotclock = modeline->dotclock;
        req->hdisplay = modeline->hdisplay;
        req->hsyncstart = modeline->hsyncstart;
        req->hsyncend = modeline->hsyncend;
        req->htotal = modeline->htotal;
        req->hskew = modeline->hskew;
        req->vdisplay = modeline->vdisplay;
        req->vsyncstart = modeline->vsyncstart;
        req->vsyncend = modeline->vsyncend;
        req->vtotal = modeline->vtotal;
        req->flags = modeline->flags;
        if (protocolBug) {
            req->privsize = 0;
        } else {
            req->privsize = modeline->privsize;
            if (modeline->privsize) {
                req->length += modeline->privsize;
                Data32(dpy, (long *) modeline->private,
                       modeline->privsize * sizeof(INT32));
            }
        }
    }
    UnlockDisplay(dpy);
    SyncHandle();
    return True;
}

Bool SDL_NAME(XF86VidModeLockModeSwitch) (dpy, screen, lock)
     Display *
         dpy;
     int
         screen;
     int
         lock;
{
    XExtDisplayInfo *info = find_display(dpy);
    xXF86VidModeLockModeSwitchReq *req;

    XF86VidModeCheckExtension(dpy, info, False);

    LockDisplay(dpy);
    GetReq(XF86VidModeLockModeSwitch, req);
    req->reqType = info->codes->major_opcode;
    req->xf86vidmodeReqType = X_XF86VidModeLockModeSwitch;
    req->screen = screen;
    req->lock = lock;
    UnlockDisplay(dpy);
    SyncHandle();
    return True;
}

Bool SDL_NAME(XF86VidModeGetMonitor) (dpy, screen, monitor)
     Display *
         dpy;
     int
         screen;
SDL_NAME(XF86VidModeMonitor) * monitor;
{
    XExtDisplayInfo *info = find_display(dpy);
    xXF86VidModeGetMonitorReply rep;
    xXF86VidModeGetMonitorReq *req;
    CARD32 syncrange;
    int i;

    XF86VidModeCheckExtension(dpy, info, False);

    LockDisplay(dpy);
    GetReq(XF86VidModeGetMonitor, req);
    req->reqType = info->codes->major_opcode;
    req->xf86vidmodeReqType = X_XF86VidModeGetMonitor;
    req->screen = screen;
    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
        UnlockDisplay(dpy);
        SyncHandle();
        return False;
    }
    monitor->nhsync = rep.nhsync;
    monitor->nvsync = rep.nvsync;
#if 0
    monitor->bandwidth = (float) rep.bandwidth / 1e6;
#endif
    if (rep.vendorLength) {
        if (!(monitor->vendor = (char *) Xcalloc(rep.vendorLength + 1, 1))) {
            _XEatData(dpy, (rep.nhsync + rep.nvsync) * 4 +
                      ((rep.vendorLength + 3) & ~3) +
                      ((rep.modelLength + 3) & ~3));
            UnlockDisplay(dpy);
            SyncHandle();
            return False;
        }
    } else {
        monitor->vendor = NULL;
    }
    if (rep.modelLength) {
        if (!(monitor->model = Xcalloc(rep.modelLength + 1, 1))) {
            _XEatData(dpy, (rep.nhsync + rep.nvsync) * 4 +
                      ((rep.vendorLength + 3) & ~3) +
                      ((rep.modelLength + 3) & ~3));
            if (monitor->vendor)
                Xfree(monitor->vendor);
            UnlockDisplay(dpy);
            SyncHandle();
            return False;
        }
    } else {
        monitor->model = NULL;
    }
    if (!
        (monitor->hsync =
         Xcalloc(rep.nhsync, sizeof(SDL_NAME(XF86VidModeSyncRange))))) {
        _XEatData(dpy, (rep.nhsync + rep.nvsync) * 4 +
                  ((rep.vendorLength + 3) & ~3) +
                  ((rep.modelLength + 3) & ~3));

        if (monitor->vendor)
            Xfree(monitor->vendor);
        if (monitor->model)
            Xfree(monitor->model);
        UnlockDisplay(dpy);
        SyncHandle();
        return False;
    }
    if (!
        (monitor->vsync =
         Xcalloc(rep.nvsync, sizeof(SDL_NAME(XF86VidModeSyncRange))))) {
        _XEatData(dpy, (rep.nhsync + rep.nvsync) * 4 +
                  ((rep.vendorLength + 3) & ~3) +
                  ((rep.modelLength + 3) & ~3));
        if (monitor->vendor)
            Xfree(monitor->vendor);
        if (monitor->model)
            Xfree(monitor->model);
        Xfree(monitor->hsync);
        UnlockDisplay(dpy);
        SyncHandle();
        return False;
    }
    for (i = 0; i < rep.nhsync; i++) {
        _XRead(dpy, (char *) &syncrange, 4);
        monitor->hsync[i].lo = (float) (syncrange & 0xFFFF) / 100.0;
        monitor->hsync[i].hi = (float) (syncrange >> 16) / 100.0;
    }
    for (i = 0; i < rep.nvsync; i++) {
        _XRead(dpy, (char *) &syncrange, 4);
        monitor->vsync[i].lo = (float) (syncrange & 0xFFFF) / 100.0;
        monitor->vsync[i].hi = (float) (syncrange >> 16) / 100.0;
    }
    if (rep.vendorLength)
        _XReadPad(dpy, monitor->vendor, rep.vendorLength);
    else
        monitor->vendor = "";
    if (rep.modelLength)
        _XReadPad(dpy, monitor->model, rep.modelLength);
    else
        monitor->model = "";

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

Bool SDL_NAME(XF86VidModeGetViewPort) (dpy, screen, x, y)
     Display *
         dpy;
     int
         screen;
     int *
     x, *
         y;
{
    XExtDisplayInfo *info = find_display(dpy);
    xXF86VidModeGetViewPortReply rep;
    xXF86VidModeGetViewPortReq *req;
    int majorVersion, minorVersion;
    Bool protocolBug = False;

    XF86VidModeCheckExtension(dpy, info, False);

    /*
     * Note: There was a bug in the protocol implementation in versions
     * 0.x with x < 8 (no reply was sent, so the client would hang)
     * Check the server's version, and don't wait for a reply with older
     * versions.
     */

    SDL_NAME(XF86VidModeQueryVersion) (dpy, &majorVersion, &minorVersion);
    if (majorVersion == 0 && minorVersion < 8) {
        protocolBug = True;
#ifdef DEBUG
        fprintf(stderr, "XF86VidModeGetViewPort: Warning: Xserver is"
                "running an old version (%d.%d)\n", majorVersion,
                minorVersion);
#endif
    }
    LockDisplay(dpy);
    GetReq(XF86VidModeGetViewPort, req);
    req->reqType = info->codes->major_opcode;
    req->xf86vidmodeReqType = X_XF86VidModeGetViewPort;
    req->screen = screen;
    if (protocolBug) {
        *x = 0;
        *y = 0;
    } else {
        if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
            UnlockDisplay(dpy);
            SyncHandle();
            return False;
        }
        *x = rep.x;
        *y = rep.y;
    }

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

Bool SDL_NAME(XF86VidModeSetViewPort) (dpy, screen, x, y)
     Display *
         dpy;
     int
         screen;
     int
         x,
         y;
{
    XExtDisplayInfo *info = find_display(dpy);
    xXF86VidModeSetViewPortReq *req;

    XF86VidModeCheckExtension(dpy, info, False);

    LockDisplay(dpy);
    GetReq(XF86VidModeSetViewPort, req);
    req->reqType = info->codes->major_opcode;
    req->xf86vidmodeReqType = X_XF86VidModeSetViewPort;
    req->screen = screen;
    req->x = x;
    req->y = y;

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

Bool
SDL_NAME(XF86VidModeGetDotClocks) (dpy, screen,
                                   flagsPtr, numclocksPtr, maxclocksPtr,
                                   clocksPtr)
     Display *dpy;
     int screen;
     int *flagsPtr, *numclocksPtr, *maxclocksPtr, *clocksPtr[];
{
    XExtDisplayInfo *info = find_display(dpy);
    xXF86VidModeGetDotClocksReply rep;
    xXF86VidModeGetDotClocksReq *req;
    int i, *dotclocks;
    CARD32 dotclk;

    XF86VidModeCheckExtension(dpy, info, False);

    LockDisplay(dpy);
    GetReq(XF86VidModeGetDotClocks, req);
    req->reqType = info->codes->major_opcode;
    req->xf86vidmodeReqType = X_XF86VidModeGetDotClocks;
    req->screen = screen;
    if (!_XReply(dpy, (xReply *) & rep,
                 (SIZEOF(xXF86VidModeGetDotClocksReply) -
                  SIZEOF(xReply)) >> 2, xFalse)) {
        UnlockDisplay(dpy);
        SyncHandle();
        return False;
    }
    *numclocksPtr = rep.clocks;
    *maxclocksPtr = rep.maxclocks;
    *flagsPtr = rep.flags;

    if (!(dotclocks = (int *) Xcalloc(rep.clocks, sizeof(int)))) {
        _XEatData(dpy, (rep.clocks) * 4);
        Xfree(dotclocks);
        UnlockDisplay(dpy);
        SyncHandle();
        return False;
    }

    for (i = 0; i < rep.clocks; i++) {
        _XRead(dpy, (char *) &dotclk, 4);
        dotclocks[i] = dotclk;
    }
    *clocksPtr = dotclocks;
    UnlockDisplay(dpy);
    SyncHandle();
    return True;
}

Bool
SDL_NAME(XF86VidModeSetGammaRamp) (Display * dpy,
                                   int screen,
                                   int size,
                                   unsigned short *red,
                                   unsigned short *green,
                                   unsigned short *blue)
{
    int length = (size + 1) & ~1;
    XExtDisplayInfo *info = find_display(dpy);
    xXF86VidModeSetGammaRampReq *req;

    XF86VidModeCheckExtension(dpy, info, False);
    LockDisplay(dpy);
    GetReq(XF86VidModeSetGammaRamp, req);
    req->reqType = info->codes->major_opcode;
    req->xf86vidmodeReqType = X_XF86VidModeSetGammaRamp;
    req->screen = screen;
    req->length += (length >> 1) * 3;
    req->size = size;
    _XSend(dpy, (char *) red, size * 2);
    _XSend(dpy, (char *) green, size * 2);
    _XSend(dpy, (char *) blue, size * 2);
    UnlockDisplay(dpy);
    SyncHandle();
    return True;
}


Bool
SDL_NAME(XF86VidModeGetGammaRamp) (Display * dpy,
                                   int screen,
                                   int size,
                                   unsigned short *red,
                                   unsigned short *green,
                                   unsigned short *blue)
{
    XExtDisplayInfo *info = find_display(dpy);
    xXF86VidModeGetGammaRampReq *req;
    xXF86VidModeGetGammaRampReply rep;

    XF86VidModeCheckExtension(dpy, info, False);

    LockDisplay(dpy);
    GetReq(XF86VidModeGetGammaRamp, req);
    req->reqType = info->codes->major_opcode;
    req->xf86vidmodeReqType = X_XF86VidModeGetGammaRamp;
    req->screen = screen;
    req->size = size;
    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
        UnlockDisplay(dpy);
        SyncHandle();
        return False;
    }
    if (rep.size) {
        _XRead(dpy, (char *) red, rep.size << 1);
        _XRead(dpy, (char *) green, rep.size << 1);
        _XRead(dpy, (char *) blue, rep.size << 1);
    }

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

Bool SDL_NAME(XF86VidModeGetGammaRampSize) (Display * dpy,
                                            int screen, int *size)
{
    XExtDisplayInfo *info = find_display(dpy);
    xXF86VidModeGetGammaRampSizeReq *req;
    xXF86VidModeGetGammaRampSizeReply rep;

    *size = 0;

    XF86VidModeCheckExtension(dpy, info, False);

    LockDisplay(dpy);
    GetReq(XF86VidModeGetGammaRampSize, req);
    req->reqType = info->codes->major_opcode;
    req->xf86vidmodeReqType = X_XF86VidModeGetGammaRampSize;
    req->screen = screen;
    if (!_XReply(dpy, (xReply *) & rep, 0, xTrue)) {
        UnlockDisplay(dpy);
        SyncHandle();
        return False;
    }
    *size = rep.size;
    UnlockDisplay(dpy);
    SyncHandle();
    return True;
}

/* vi: set ts=4 sw=4 expandtab: */