/*
* 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. */
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <X11/Xlibint.h>
#include <X11/extensions/Xext.h>
#define EXTENSION_PROC_ARGS void *
#include <X11/extensions/extutil.h>
#include <X11/extensions/dmxproto.h>
#include <X11/extensions/dmxext.h>
#include <limits.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,
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;
Bool ret = False;
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;
}
if (rep.displayNameLength < 1024)
attr->displayName = Xmalloc(rep.displayNameLength + 1 + 4 /* for pad */);
else
attr->displayName = NULL; /* name length is unbelievable, reject */
if (attr->displayName == NULL) {
_XEatDataWords(dpy, rep.length);
goto end;
}
_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;
ret = True;
end:
UnlockDisplay(dpy);
SyncHandle();
return ret;
}
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;
if (!screen)
return False;
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 = Xcalloc(paddedLength, 1);
memcpy(buffer, displayName, length);
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 */
Bool ret = False;
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;
}
/*
* rep.screenCount is a CARD32 so could be as large as 2^32
* The X11 protocol limits the total screen size to 64k x 64k,
* and no screen can be smaller than a pixel. While technically
* that means we could theoretically reach 2^32 screens, and that's
* not even taking overlap into account, 64k seems far larger than
* any reasonable configuration, so we limit to that to prevent both
* integer overflow in the size calculations, and bad X server
* responses causing massive memory allocation.
*/
if (rep.screenCount < 65536) {
screens = Xmalloc(rep.screenCount * sizeof(*screens));
windows = Xmalloc(rep.screenCount * sizeof(*windows));
pos = Xmalloc(rep.screenCount * sizeof(*pos));
vis = Xmalloc(rep.screenCount * sizeof(*vis));
} else {
screens = windows = NULL;
pos = vis = NULL;
}
if (!screens || !windows || !pos || !vis) {
_XEatDataWords(dpy, rep.length);
goto end;
}
_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];
}
ret = True;
end:
Xfree(vis);
Xfree(pos);
Xfree(windows);
Xfree(screens);
UnlockDisplay(dpy);
SyncHandle();
return ret;
}
/** 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;
Bool ret = False;
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;
}
if (rep.nameLength < 1024)
buffer = Xmalloc(rep.nameLength + 1 + 4 /* for pad */);
else
buffer = NULL; /* name length is unbelievable, reject */
if (buffer == NULL) {
_XEatDataWords(dpy, rep.length);
goto end;
}
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;
_XReadPad(dpy, buffer, rep.nameLength);
buffer[rep.nameLength] = '\0';
inf->name = buffer;
ret = True;
end:
UnlockDisplay(dpy);
SyncHandle();
return ret;
}
/** 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 = Xcalloc(paddedLength, 1);
memcpy(buffer, attr->name, paddedLength);
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;
}