Add Distributed Multihead X (DMX) supportrel-0-6-1lg3d-rel-0-7-0lg3d-baseXORG-6_8_1XORG-6_8_0XORG-6_7_99_904XORG-6_7_99_903XORG-6_7_99_902XORG-6_7_99_901XORG-6_7_99_2XORG-6_7_99_1

1 files changed, 802 insertions, 0 deletions

diff --git a/src/dmx.c b/src/dmx.c
new file mode 100644
index 0000000..0f9c099
--- /dev/null
+++ b/src/dmx.c
@@ -0,0 +1,802 @@
+/* $XFree86$ */
+/*
+ * Copyright 2002-2004 Red Hat Inc., Durham, North Carolina.
+ *
+ * All Rights Reserved.
+ *
+ * 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 on 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 (including the
+ * next paragraph) 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
+ * NON-INFRINGEMENT.  IN NO EVENT SHALL RED HAT AND/OR THEIR SUPPLIERS
+ * 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.
+ */
+
+/*
+ * Authors:
+ *   Rickard E. (Rik) Faith <faith@redhat.com>
+ *
+ */
+
+/* THIS IS NOT AN X CONSORTIUM STANDARD */
+
+/** \file
+ * This file implements the client-side part of the DMX protocol.  It
+ * can be included in client applications by linking with the libdmx.a
+ * library. */
+
+#define NEED_REPLIES
+#include <X11/Xlibint.h>
+#include "Xext.h"
+#define EXTENSION_PROC_ARGS void *
+#include "extutil.h"
+#include "dmxproto.h"
+#include "dmxext.h"
+
+static XExtensionInfo dmx_extension_info_data;
+static XExtensionInfo *dmx_extension_info = &dmx_extension_info_data;
+static const char     *dmx_extension_name = DMX_EXTENSION_NAME;
+
+#define DMXCheckExtension(dpy,i,val) \
+  XextCheckExtension(dpy, i, dmx_extension_name, val)
+#define DMXSimpleCheckExtension(dpy,i) \
+  XextSimpleCheckExtension(dpy, i, dmx_extension_name)
+
+/*****************************************************************************
+ *                                                                           *
+ *                         private utility routines                          *
+ *                                                                           *
+ *****************************************************************************/
+
+static int close_display(Display *dpy, XExtCodes *extCodes);
+static /* const */ XExtensionHooks dmx_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, dmx_extension_info,
+                                  (char *)dmx_extension_name,
+                                  &dmx_extension_hooks,
+                                  0, NULL)
+
+static XEXT_GENERATE_CLOSE_DISPLAY(close_display, dmx_extension_info)
+
+
+/*****************************************************************************
+ *                                                                           *
+ *                  public DMX Extension routines                            *
+ *                                                                           *
+ *****************************************************************************/
+
+/** If the server has the DMX extension, the event and error bases will
+ * be placed in \a event_basep and \a error_basep, and True will be
+ * returned.  Otherwise, False will be returned.
+ *
+ * Available in DMX Protocol Version 1.0 */
+Bool DMXQueryExtension(Display *dpy, int *event_basep, int *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;
+    }
+}
+
+/** If the DMXQueryVersion protocol request returns version information
+ * from the server, \a majorVersion, \a minorVersion, and \a
+ * patchVersion are filled in with the appropriate information and True
+ * is returned.  Otherwise, False will be returned.
+ *
+ * Available in DMX Protocol Version 1.0 */
+Bool DMXQueryVersion(Display *dpy,
+                     int *majorVersion, int *minorVersion, int *patchVersion)
+{
+    XExtDisplayInfo       *info = find_display(dpy);
+    xDMXQueryVersionReply rep;
+    xDMXQueryVersionReq   *req;
+
+    DMXCheckExtension(dpy, info, False);
+
+    LockDisplay(dpy);
+    GetReq(DMXQueryVersion, req);
+    req->reqType     = info->codes->major_opcode;
+    req->dmxReqType  = X_DMXQueryVersion;
+    if (!_XReply(dpy, (xReply *)&rep, 0, xTrue)) {
+	UnlockDisplay(dpy);
+	SyncHandle();
+	return False;
+    }
+    *majorVersion = rep.majorVersion;
+    *minorVersion = rep.minorVersion;
+    *patchVersion = rep.patchVersion;
+    UnlockDisplay(dpy);
+    SyncHandle();
+    return True;
+}
+
+/** Flush all pending dmxSync requests in DMX server.
+ *
+ * Available in DMX Protocol Version 1.5 */
+Bool DMXSync(Display *dpy)
+{
+    XExtDisplayInfo *info = find_display(dpy);
+    xDMXSyncReply   rep;
+    xDMXSyncReq     *req;
+
+    DMXCheckExtension(dpy, info, False);
+
+    LockDisplay(dpy);
+    GetReq(DMXSync, req);
+    req->reqType    = info->codes->major_opcode;
+    req->dmxReqType = X_DMXSync;
+    if (!_XReply(dpy, (xReply *)&rep, 0, xTrue)) {
+        UnlockDisplay(dpy);
+        SyncHandle();
+        return False;
+    }
+
+    UnlockDisplay(dpy);
+    SyncHandle();
+    return rep.status == Success ? True : False;
+}
+
+/** The creation of the specified \a window will be forced.
+ *
+ * Available in DMX Protocol Version 1.2
+ * Reply added in DMX Protocol Version 2.0 */
+Bool DMXForceWindowCreation(Display *dpy, Window window)
+{
+    XExtDisplayInfo              *info = find_display(dpy);
+    xDMXForceWindowCreationReq   *req;
+    xDMXForceWindowCreationReply rep;
+
+    DMXCheckExtension(dpy, info, False);
+
+    LockDisplay(dpy);
+    GetReq(DMXForceWindowCreation, req);
+    req->reqType    = info->codes->major_opcode;
+    req->dmxReqType = X_DMXForceWindowCreation;
+    req->window     = window;
+    if (!_XReply(dpy, (xReply *)&rep, 0, xTrue)) {
+        UnlockDisplay(dpy);
+        SyncHandle();
+        return False;
+    }
+
+    UnlockDisplay(dpy);
+    SyncHandle();
+    return rep.status == Success ? True : False;
+}
+
+/** If the DMXGetScreenCount protocol request returns the screen count,
+ * the value will be placed in \a screen_count, and True will be
+ * returned.  Otherwise, False will be returned.
+ *
+ * Available in DMX Protocol Version 1.0 */
+Bool DMXGetScreenCount(Display *dpy, int *screen_count)
+{
+    XExtDisplayInfo         *info = find_display(dpy);
+    xDMXGetScreenCountReply rep;
+    xDMXGetScreenCountReq   *req;
+
+    DMXCheckExtension(dpy, info, False);
+
+    LockDisplay(dpy);
+    GetReq(DMXGetScreenCount, req);
+    req->reqType    = info->codes->major_opcode;
+    req->dmxReqType = X_DMXGetScreenCount;
+    if (!_XReply(dpy, (xReply *)&rep, 0, xTrue)) {
+        UnlockDisplay(dpy);
+        SyncHandle();
+        return False;
+    }
+    *screen_count = rep.screenCount;
+    UnlockDisplay(dpy);
+    SyncHandle();
+    return True;
+}
+
+/** If the DMXGetScreenAttributes protocol request returns information
+ * for the specified \a physical_screen, information about the screen
+ * will be placed in \a attr, and True will be returned.  Otherwise,
+ * False will be returned.
+ *
+ * Available in DMX Protocol Version 1.0; Modified in Version 2.0 */
+Bool DMXGetScreenAttributes(Display *dpy, int physical_screen,
+                            DMXScreenAttributes *attr)
+{
+    XExtDisplayInfo              *info = find_display(dpy);
+    xDMXGetScreenAttributesReply rep;
+    xDMXGetScreenAttributesReq   *req;
+
+    DMXCheckExtension(dpy, info, False);
+
+    LockDisplay(dpy);
+    GetReq(DMXGetScreenAttributes, req);
+    req->reqType        = info->codes->major_opcode;
+    req->dmxReqType     = X_DMXGetScreenAttributes;
+    req->physicalScreen = physical_screen;
+    if (!_XReply(dpy, (xReply *)&rep,
+                 (SIZEOF(xDMXGetScreenAttributesReply) - 32) >> 2, xFalse)) {
+        UnlockDisplay(dpy);
+        SyncHandle();
+        return False;
+    }
+    attr->displayName  = Xmalloc(rep.displayNameLength + 1 + 4 /* for pad */);
+    _XReadPad(dpy, attr->displayName, rep.displayNameLength);
+    attr->displayName[rep.displayNameLength] = '\0';
+    attr->logicalScreen       = rep.logicalScreen;
+    
+    attr->screenWindowWidth   = rep.screenWindowWidth;
+    attr->screenWindowHeight  = rep.screenWindowHeight;
+    attr->screenWindowXoffset = rep.screenWindowXoffset;
+    attr->screenWindowYoffset = rep.screenWindowYoffset;
+
+    attr->rootWindowWidth     = rep.rootWindowWidth;
+    attr->rootWindowHeight    = rep.rootWindowHeight;
+    attr->rootWindowXoffset   = rep.rootWindowXoffset;
+    attr->rootWindowYoffset   = rep.rootWindowYoffset;
+    attr->rootWindowXorigin   = rep.rootWindowXorigin;
+    attr->rootWindowYorigin   = rep.rootWindowYorigin;
+    UnlockDisplay(dpy);
+    SyncHandle();
+    return True;
+}
+
+static CARD32 _DMXGetScreenAttribute(int bit, DMXScreenAttributes *attr)
+{
+    switch (1 << bit) {
+    case DMXScreenWindowWidth:   return attr->screenWindowWidth;
+    case DMXScreenWindowHeight:  return attr->screenWindowHeight;
+    case DMXScreenWindowXoffset: return attr->screenWindowXoffset;
+    case DMXScreenWindowYoffset: return attr->screenWindowYoffset;
+    case DMXRootWindowWidth:     return attr->rootWindowWidth;
+    case DMXRootWindowHeight:    return attr->rootWindowHeight;
+    case DMXRootWindowXoffset:   return attr->rootWindowXoffset;
+    case DMXRootWindowYoffset:   return attr->rootWindowYoffset;
+    case DMXRootWindowXorigin:   return attr->rootWindowXorigin;
+    case DMXRootWindowYorigin:   return attr->rootWindowYorigin;
+    default:                     return 0;
+    }
+}
+
+static int _DMXDumpScreenAttributes(Display *dpy,
+                                    unsigned long mask,
+                                    DMXScreenAttributes *attr)
+{
+    int           i;
+    unsigned long value_list[32];
+    unsigned long *value = value_list;
+    int           count  = 0;
+        
+    for (i = 0; i < 32; i++) {
+        if (mask & (1 << i)) {
+            *value++ = _DMXGetScreenAttribute(i, attr);
+            ++count;
+        }
+    }
+    Data32(dpy, value_list, count * sizeof(CARD32));
+    return count;
+}
+
+static CARD32 _DMXGetInputAttribute(int bit, DMXInputAttributes *attr)
+{
+    switch (1 << bit) {
+    case DMXInputType:
+        switch (attr->inputType) {
+        case DMXLocalInputType:   return 0;
+        case DMXConsoleInputType: return 1;
+        case DMXBackendInputType: return 2;
+        }
+        return attr->inputType;
+    case DMXInputPhysicalScreen: return attr->physicalScreen;
+    case DMXInputSendsCore:      return attr->sendsCore;
+    default:                     return 0;
+    }
+}
+
+static int _DMXDumpInputAttributes(Display *dpy,
+                                   unsigned long mask,
+                                   DMXInputAttributes *attr)
+{
+    int           i;
+    unsigned long value_list[32];
+    unsigned long *value = value_list;
+    int           count = 0;
+
+    for (i = 0; i < 32; i++) {
+        if (mask & (1 << i)) {
+            *value++ = _DMXGetInputAttribute(i, attr);
+            ++count;
+        }
+    }
+    Data32(dpy, value_list, count * sizeof(CARD32));
+    return count;
+}
+
+/** Change geometries and positions of the DMX screen and root windows
+ * on the back-end X server. */
+int DMXChangeScreensAttributes(Display *dpy,
+                               int screen_count,
+                               int *screens,
+                               int mask_count,
+                               unsigned int *masks,
+                               DMXScreenAttributes *attrs, /* vector */
+                               int *error_screen)
+{
+    XExtDisplayInfo                  *info = find_display(dpy);
+    xDMXChangeScreensAttributesReply rep;
+    xDMXChangeScreensAttributesReq   *req;
+    int                              i;
+    unsigned int                     mask  = 0;
+    CARD32                           *screen_list;
+    CARD32                           *mask_list;
+
+    DMXCheckExtension(dpy, info, False);
+
+    if (screen_count < 1 || mask_count < 1) return DmxBadValue;
+
+    LockDisplay(dpy);
+    GetReq(DMXChangeScreensAttributes, req);
+    req->reqType      = info->codes->major_opcode;
+    req->dmxReqType   = X_DMXChangeScreensAttributes;
+    req->screenCount  = screen_count;
+    req->maskCount    = mask_count;
+    req->length      += screen_count + mask_count;
+
+    screen_list = (CARD32 *)Xmalloc(sizeof(*screen_list) * screen_count);
+    for (i = 0; i < screen_count; i++) screen_list[i] = screens[i];
+    Data32(dpy, screen_list, screen_count * sizeof(CARD32));
+    Xfree(screen_list);
+
+    mask_list = (CARD32 *)Xmalloc(sizeof(*mask_list) * mask_count);
+    for (i = 0; i < mask_count;   i++) mask_list[i]   = masks[i];
+    Data32(dpy, mask_list, mask_count * sizeof(CARD32));
+    Xfree(mask_list);
+
+    for (i = 0; i < screen_count; i++) {
+        if (i < mask_count) mask = masks[i];
+        req->length += _DMXDumpScreenAttributes(dpy, mask, attrs + i);
+    }
+    
+    if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
+        UnlockDisplay(dpy);
+        SyncHandle();
+        return DmxBadReply;
+    }
+    if (error_screen) *error_screen = rep.errorScreen;
+    UnlockDisplay(dpy);
+    SyncHandle();
+    return rep.status;
+}
+
+/** Add a screen. */
+Bool DMXAddScreen(Display *dpy, const char *displayName, unsigned int mask,
+                  DMXScreenAttributes *attr, int *screen)
+{
+    XExtDisplayInfo    *info = find_display(dpy);
+    xDMXAddScreenReply rep;
+    xDMXAddScreenReq   *req;
+    int                length;
+    int                paddedLength;
+
+    DMXCheckExtension(dpy, info, False);
+
+    LockDisplay(dpy);
+    GetReq(DMXAddScreen, req);
+    length                 = displayName ? strlen(displayName) : 0;
+    paddedLength           = (length + 3) & ~3;
+    req->reqType           = info->codes->major_opcode;
+    req->dmxReqType        = X_DMXAddScreen;
+    req->displayNameLength = length;
+    req->physicalScreen    = *screen;
+    req->valueMask         = mask;
+    req->length           += paddedLength/4;
+    req->length           += _DMXDumpScreenAttributes(dpy, mask, attr);
+
+    if (length) {
+        char *buffer       = Xmalloc(paddedLength);
+        memset(buffer, 0, paddedLength);
+        strcpy(buffer, displayName);
+        Data32(dpy, buffer, paddedLength);
+        Xfree(buffer);
+    }
+
+    if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
+        UnlockDisplay(dpy);
+        SyncHandle();
+        return False;
+    }
+    if (screen) *screen = rep.physicalScreen;
+    UnlockDisplay(dpy);
+    SyncHandle();
+    return rep.status == Success ? True : False;
+}
+
+/** Remove a screen. */
+Bool DMXRemoveScreen(Display *dpy, int screen)
+{
+    XExtDisplayInfo       *info = find_display(dpy);
+    xDMXRemoveScreenReply rep;
+    xDMXRemoveScreenReq   *req;
+
+    DMXCheckExtension(dpy, info, False);
+
+    LockDisplay(dpy);
+    GetReq(DMXRemoveScreen, req);
+    req->reqType           = info->codes->major_opcode;
+    req->dmxReqType        = X_DMXRemoveScreen;
+    req->physicalScreen    = screen;
+
+    if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
+        UnlockDisplay(dpy);
+        SyncHandle();
+        return False;
+    }
+    UnlockDisplay(dpy);
+    SyncHandle();
+    return rep.status == Success ? True : False;
+}
+
+/** If the DMXGetWindowAttributes protocol request returns information
+ * about the specified \a window, the number of screens for which
+ * information is available will be returned in \a screen_count and
+ * information about the first \a available_count of those screens will
+ * be placed in \a inf.  Because this call transports a great deal of
+ * information over the wire, please call #DMXGetScreenCount first, and
+ * make sure \a inf is that large.
+ *
+ * Note that if the specified \a window has not yet been mapped when
+ * #DMXGetWindowAttributes is called, then a subsequent XMapWindow call
+ * might be buffered in xlib while requests directly to the back-end X
+ * servers are processed.  This race condition can be solved by calling
+ * #DMXSync before talking directly to the back-end X servers.
+ *
+ * Available in DMX Protocol Version 1.0, but not working correctly
+ * until DMX Protocol Version 1.4 */
+Bool DMXGetWindowAttributes(Display *dpy, Window window,
+                            int *screen_count, int available_count,
+                            DMXWindowAttributes *inf)
+{
+    XExtDisplayInfo              *info = find_display(dpy);
+    xDMXGetWindowAttributesReply rep;
+    xDMXGetWindowAttributesReq   *req;
+    unsigned long                current;
+    CARD32                       *screens; /* Must match protocol size */
+    CARD32                       *windows; /* Must match protocol size */
+    XRectangle                   *pos;     /* Must match protocol size */
+    XRectangle                   *vis;     /* Must match protocol size */
+
+    DMXCheckExtension(dpy, info, False);
+
+    LockDisplay(dpy);
+    GetReq(DMXGetWindowAttributes, req);
+    req->reqType    = info->codes->major_opcode;
+    req->dmxReqType = X_DMXGetWindowAttributes;
+    req->window     = window;
+    if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
+        UnlockDisplay(dpy);
+        SyncHandle();
+        return False;
+    }
+
+                                /* FIXME: check for NULL? */
+    screens    = Xmalloc(rep.screenCount * sizeof(*screens));
+    windows    = Xmalloc(rep.screenCount * sizeof(*windows));
+    pos        = Xmalloc(rep.screenCount * sizeof(*pos));
+    vis        = Xmalloc(rep.screenCount * sizeof(*vis));
+
+    _XRead(dpy, (char *)screens, rep.screenCount * sizeof(*screens));
+    _XRead(dpy, (char *)windows, rep.screenCount * sizeof(*windows));
+    _XRead(dpy, (char *)pos,     rep.screenCount * sizeof(*pos));
+    _XRead(dpy, (char *)vis,     rep.screenCount * sizeof(*vis));
+    
+    *screen_count = rep.screenCount;
+    for (current = 0;
+         current < rep.screenCount && current < (unsigned)available_count;
+         current++, inf++) {
+        inf->screen    = screens[current];
+        inf->window    = windows[current];
+        inf->pos       = pos[current];
+        inf->vis       = vis[current];
+    }
+
+    Xfree(vis);
+    Xfree(pos);
+    Xfree(windows);
+    Xfree(screens);
+
+    UnlockDisplay(dpy);
+    SyncHandle();
+    return True;
+}
+
+/** If the DMXGetDesktopAttributes protocol request returns information
+ * correctly, the information will be placed in \a attr, and True will
+ * be returned.  Otherwise, False will be returned.
+ *
+ * Available in DMX Protocol Version 2.0 */
+Bool DMXGetDesktopAttributes(Display *dpy, DMXDesktopAttributes *attr)
+{
+    XExtDisplayInfo               *info = find_display(dpy);
+    xDMXGetDesktopAttributesReply rep;
+    xDMXGetDesktopAttributesReq   *req;
+
+    DMXCheckExtension(dpy, info, False);
+
+    LockDisplay(dpy);
+    GetReq(DMXGetDesktopAttributes, req);
+    req->reqType        = info->codes->major_opcode;
+    req->dmxReqType     = X_DMXGetDesktopAttributes;
+    if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
+        UnlockDisplay(dpy);
+        SyncHandle();
+        return False;
+    }
+    attr->width  = rep.width;
+    attr->height = rep.height;
+    attr->shiftX = rep.shiftX;
+    attr->shiftY = rep.shiftY;
+
+    UnlockDisplay(dpy);
+    SyncHandle();
+    return True;
+}
+
+static CARD32 _DMXGetDesktopAttribute(int bit, DMXDesktopAttributes *attr)
+{
+    switch (1 << bit) {
+    case DMXDesktopWidth:  return attr->width;
+    case DMXDesktopHeight: return attr->height;
+    case DMXDesktopShiftX: return attr->shiftX;
+    case DMXDesktopShiftY: return attr->shiftY;
+    default:               return 0;
+    }
+}
+
+static int _DMXDumpDesktopAttributes(Display *dpy,
+                                     unsigned long mask,
+                                     DMXDesktopAttributes *attr)
+{
+    int           i;
+    unsigned long value_list[32];
+    unsigned long *value = value_list;
+    int           count  = 0;
+        
+    for (i = 0; i < 32; i++) {
+        if (mask & (1 << i)) {
+            *value++ = _DMXGetDesktopAttribute(i, attr);
+            ++count;
+        }
+    }
+    Data32(dpy, value_list, count * sizeof(CARD32));
+    return count;
+}
+
+/** Change the global bounding box and origin offset.
+ *
+ * Available in DMX Protocol Version 2.0 */
+int DMXChangeDesktopAttributes(Display *dpy,
+                               unsigned int mask,
+                               DMXDesktopAttributes *attr) 
+{
+    XExtDisplayInfo                  *info = find_display(dpy);
+    xDMXChangeDesktopAttributesReply rep;
+    xDMXChangeDesktopAttributesReq   *req;
+
+    DMXCheckExtension(dpy, info, False);
+
+    LockDisplay(dpy);
+    GetReq(DMXChangeDesktopAttributes, req);
+    req->reqType      = info->codes->major_opcode;
+    req->dmxReqType   = X_DMXChangeDesktopAttributes;
+    req->valueMask    = mask;
+    req->length      +=_DMXDumpDesktopAttributes(dpy, mask, attr);
+    
+    if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
+        UnlockDisplay(dpy);
+        SyncHandle();
+        return DmxBadReply;
+    }
+    UnlockDisplay(dpy);
+    SyncHandle();
+    return rep.status;
+}
+
+/** If the DMXGetInputCount protocol request returns the input count,
+ * the value will be placed in \a input_count, and True will be
+ * returned.  Otherwise, False will be returned.
+ *
+ * Available in DMX Protocol Version 1.1 */
+Bool DMXGetInputCount(Display *dpy, int *input_count)
+{
+    XExtDisplayInfo         *info = find_display(dpy);
+    xDMXGetInputCountReply  rep;
+    xDMXGetInputCountReq    *req;
+
+    DMXCheckExtension(dpy, info, False);
+
+    LockDisplay(dpy);
+    GetReq(DMXGetInputCount, req);
+    req->reqType    = info->codes->major_opcode;
+    req->dmxReqType = X_DMXGetInputCount;
+    if (!_XReply(dpy, (xReply *)&rep, 0, xTrue)) {
+        UnlockDisplay(dpy);
+        SyncHandle();
+        return False;
+    }
+    *input_count = rep.inputCount;
+    UnlockDisplay(dpy);
+    SyncHandle();
+    return True;
+}
+
+/** If the DMXGetInputAttributes protocol request returns information
+ * about the input device with the specified \a id, information about
+ * the input device will be placed in \a inf, and True will be returned.
+ * Otherwise, False will be returned.
+ *
+ * Available in DMX Protocol Version 1.1 */
+Bool DMXGetInputAttributes(Display *dpy, int id, DMXInputAttributes *inf)
+{
+    XExtDisplayInfo             *info = find_display(dpy);
+    xDMXGetInputAttributesReply rep;
+    xDMXGetInputAttributesReq   *req;
+    char                        *buffer;
+
+    DMXCheckExtension(dpy, info, False);
+
+    LockDisplay(dpy);
+    GetReq(DMXGetInputAttributes, req);
+    req->reqType    = info->codes->major_opcode;
+    req->dmxReqType = X_DMXGetInputAttributes;
+    req->deviceId   = id;
+    if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
+        UnlockDisplay(dpy);
+        SyncHandle();
+        return False;
+    }
+
+    switch (rep.inputType) {
+    case 0: inf->inputType = DMXLocalInputType;   break;
+    case 1: inf->inputType = DMXConsoleInputType; break;
+    case 2: inf->inputType = DMXBackendInputType; break;
+    }
+
+    inf->physicalScreen = rep.physicalScreen;
+    inf->physicalId     = rep.physicalId;
+    inf->isCore         = rep.isCore;
+    inf->sendsCore      = rep.sendsCore;
+    inf->detached       = rep.detached;
+    buffer              = Xmalloc(rep.nameLength + 1 + 4 /* for pad */);
+    _XReadPad(dpy, buffer, rep.nameLength);
+    buffer[rep.nameLength] = '\0';
+    inf->name           = buffer;
+    UnlockDisplay(dpy);
+    SyncHandle();
+    return True;
+}
+
+/** Add input. */
+Bool DMXAddInput(Display *dpy, unsigned int mask, DMXInputAttributes *attr,
+                 int *id)
+{
+    XExtDisplayInfo         *info = find_display(dpy);
+    xDMXAddInputReply       rep;
+    xDMXAddInputReq         *req;
+    int                     length;
+    int                     paddedLength;
+
+    DMXCheckExtension(dpy, info, False);
+
+    LockDisplay(dpy);
+    GetReq(DMXAddInput, req);
+    length                 = attr->name ? strlen(attr->name) : 0;
+    paddedLength           = (length + 3) & ~3;
+    req->reqType           = info->codes->major_opcode;
+    req->dmxReqType        = X_DMXAddInput;
+    req->displayNameLength = length;
+    req->valueMask         = mask;
+    req->length           += paddedLength/4;
+    req->length           += _DMXDumpInputAttributes(dpy, mask, attr);
+
+    if (length) {
+        char *buffer       = Xmalloc(paddedLength);
+        memset(buffer, 0, paddedLength);
+        strcpy(buffer, attr->name);
+        Data32(dpy, buffer, paddedLength);
+        Xfree(buffer);
+    }
+
+    if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
+        UnlockDisplay(dpy);
+        SyncHandle();
+        return False;
+    }
+    if (id) *id = rep.physicalId;
+    UnlockDisplay(dpy);
+    SyncHandle();
+    return rep.status == Success ? True : False;
+}
+
+/** Add backend input (a helper function that calls #DMXAddInput). */
+Bool DMXAddBackendInput(Display *dpy, int screen, int sendsCore, int *newId)
+{
+    DMXInputAttributes attr;
+    unsigned int       mask = (DMXInputType
+                               | DMXInputPhysicalScreen
+                               | DMXInputSendsCore);
+        
+    attr.inputType        = DMXBackendInputType;
+    attr.physicalScreen   = screen;
+    attr.sendsCore        = sendsCore;
+    attr.name             = NULL;
+    return DMXAddInput(dpy, mask, &attr, newId);
+}
+
+/** Add console input (a helper function that calls #DMXAddInput). */
+Bool DMXAddConsoleInput(Display *dpy, const char *name, int sendsCore,
+                        int *newId)
+{
+    DMXInputAttributes attr;
+    unsigned int       mask = (DMXInputType
+                               | DMXInputSendsCore);
+        
+    attr.inputType        = DMXConsoleInputType;
+    attr.physicalScreen   = 0;
+    attr.sendsCore        = sendsCore;
+    attr.name             = name;
+    return DMXAddInput(dpy, mask, &attr, newId);
+}
+
+/** Remove an input. */
+Bool DMXRemoveInput(Display *dpy, int id)
+{
+    XExtDisplayInfo      *info = find_display(dpy);
+    xDMXRemoveInputReply rep;
+    xDMXRemoveInputReq   *req;
+
+    DMXCheckExtension(dpy, info, False);
+
+    LockDisplay(dpy);
+    GetReq(DMXRemoveInput, req);
+    req->reqType          = info->codes->major_opcode;
+    req->dmxReqType       = X_DMXRemoveInput;
+    req->physicalId       = id;
+
+    if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
+        UnlockDisplay(dpy);
+        SyncHandle();
+        return False;
+    }
+    UnlockDisplay(dpy);
+    SyncHandle();
+    return rep.status == Success ? True : False;
+}