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+/*
+ * Copyright © 2006 Keith Packard
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting documentation, and
+ * that the name of the copyright holders not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission. The copyright holders make no representations
+ * about the suitability of this software for any purpose. It is provided "as
+ * is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+/*
+ * This Xinerama implementation comes from the SiS driver which has
+ * the following notice:
+ */
+/*
+ * SiS driver main code
+ *
+ * Copyright (C) 2001-2005 by Thomas Winischhofer, Vienna, Austria.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1) Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2) Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3) The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Author: Thomas Winischhofer <thomas@winischhofer.net>
+ * - driver entirely rewritten since 2001, only basic structure taken from
+ * old code (except sis_dri.c, sis_shadow.c, sis_accel.c and parts of
+ * sis_dga.c; these were mostly taken over; sis_dri.c was changed for
+ * new versions of the DRI layer)
+ *
+ * This notice covers the entire driver code unless indicated otherwise.
+ *
+ * Formerly based on code which was
+ * Copyright (C) 1998, 1999 by Alan Hourihane, Wigan, England.
+ * Written by:
+ * Alan Hourihane <alanh@fairlite.demon.co.uk>,
+ * Mike Chapman <mike@paranoia.com>,
+ * Juanjo Santamarta <santamarta@ctv.es>,
+ * Mitani Hiroshi <hmitani@drl.mei.co.jp>,
+ * David Thomas <davtom@dream.org.uk>.
+ */
+
+#include "randrstr.h"
+#include "swaprep.h"
+#include <X11/extensions/panoramiXproto.h>
+
+#define RR_XINERAMA_MAJOR_VERSION 1
+#define RR_XINERAMA_MINOR_VERSION 1
+
+/* Xinerama is not multi-screen capable; just report about screen 0 */
+#define RR_XINERAMA_SCREEN 0
+
+static int ProcRRXineramaQueryVersion(ClientPtr client);
+static int ProcRRXineramaGetState(ClientPtr client);
+static int ProcRRXineramaGetScreenCount(ClientPtr client);
+static int ProcRRXineramaGetScreenSize(ClientPtr client);
+static int ProcRRXineramaIsActive(ClientPtr client);
+static int ProcRRXineramaQueryScreens(ClientPtr client);
+static int SProcRRXineramaDispatch(ClientPtr client);
+
+/* Proc */
+
+int
+ProcRRXineramaQueryVersion(ClientPtr client)
+{
+ xPanoramiXQueryVersionReply rep;
+ register int n;
+
+ REQUEST_SIZE_MATCH(xPanoramiXQueryVersionReq);
+ rep.type = X_Reply;
+ rep.length = 0;
+ rep.sequenceNumber = client->sequence;
+ rep.majorVersion = RR_XINERAMA_MAJOR_VERSION;
+ rep.minorVersion = RR_XINERAMA_MINOR_VERSION;
+ if(client->swapped) {
+ swaps(&rep.sequenceNumber, n);
+ swapl(&rep.length, n);
+ swaps(&rep.majorVersion, n);
+ swaps(&rep.minorVersion, n);
+ }
+ WriteToClient(client, sizeof(xPanoramiXQueryVersionReply), (char *)&rep);
+ return (client->noClientException);
+}
+
+int
+ProcRRXineramaGetState(ClientPtr client)
+{
+ REQUEST(xPanoramiXGetStateReq);
+ WindowPtr pWin;
+ xPanoramiXGetStateReply rep;
+ register int n, rc;
+ ScreenPtr pScreen;
+ rrScrPrivPtr pScrPriv;
+ Bool active = FALSE;
+
+ REQUEST_SIZE_MATCH(xPanoramiXGetStateReq);
+ rc = dixLookupWindow(&pWin, stuff->window, client, DixGetAttrAccess);
+ if(rc != Success)
+ return rc;
+
+ pScreen = pWin->drawable.pScreen;
+ pScrPriv = rrGetScrPriv(pScreen);
+ if (pScrPriv)
+ {
+ /* XXX do we need more than this? */
+ active = TRUE;
+ }
+
+ rep.type = X_Reply;
+ rep.length = 0;
+ rep.sequenceNumber = client->sequence;
+ rep.state = active;
+ rep.window = stuff->window;
+ if(client->swapped) {
+ swaps (&rep.sequenceNumber, n);
+ swapl (&rep.length, n);
+ swapl (&rep.window, n);
+ }
+ WriteToClient(client, sizeof(xPanoramiXGetStateReply), (char *)&rep);
+ return client->noClientException;
+}
+
+static Bool
+RRXineramaCrtcActive (RRCrtcPtr crtc)
+{
+ return crtc->mode != NULL && crtc->numOutputs > 0;
+}
+
+static int
+RRXineramaScreenCount (ScreenPtr pScreen)
+{
+ int i, n;
+
+ n = 0;
+ if (rrGetScrPriv (pScreen))
+ {
+ rrScrPriv(pScreen);
+ for (i = 0; i < pScrPriv->numCrtcs; i++)
+ if (RRXineramaCrtcActive (pScrPriv->crtcs[i]))
+ n++;
+ }
+ return n;
+}
+
+static Bool
+RRXineramaScreenActive (ScreenPtr pScreen)
+{
+ return RRXineramaScreenCount (pScreen) > 0;
+}
+
+int
+ProcRRXineramaGetScreenCount(ClientPtr client)
+{
+ REQUEST(xPanoramiXGetScreenCountReq);
+ WindowPtr pWin;
+ xPanoramiXGetScreenCountReply rep;
+ register int n, rc;
+
+ REQUEST_SIZE_MATCH(xPanoramiXGetScreenCountReq);
+ rc = dixLookupWindow(&pWin, stuff->window, client, DixGetAttrAccess);
+ if (rc != Success)
+ return rc;
+
+ rep.type = X_Reply;
+ rep.length = 0;
+ rep.sequenceNumber = client->sequence;
+ rep.ScreenCount = RRXineramaScreenCount (pWin->drawable.pScreen);
+ rep.window = stuff->window;
+ if(client->swapped) {
+ swaps(&rep.sequenceNumber, n);
+ swapl(&rep.length, n);
+ swapl(&rep.window, n);
+ }
+ WriteToClient(client, sizeof(xPanoramiXGetScreenCountReply), (char *)&rep);
+ return client->noClientException;
+}
+
+int
+ProcRRXineramaGetScreenSize(ClientPtr client)
+{
+ REQUEST(xPanoramiXGetScreenSizeReq);
+ WindowPtr pWin, pRoot;
+ ScreenPtr pScreen;
+ xPanoramiXGetScreenSizeReply rep;
+ register int n, rc;
+
+ REQUEST_SIZE_MATCH(xPanoramiXGetScreenSizeReq);
+ rc = dixLookupWindow(&pWin, stuff->window, client, DixGetAttrAccess);
+ if (rc != Success)
+ return rc;
+
+ pScreen = pWin->drawable.pScreen;
+ pRoot = WindowTable[pScreen->myNum];
+
+ rep.type = X_Reply;
+ rep.length = 0;
+ rep.sequenceNumber = client->sequence;
+ rep.width = pRoot->drawable.width;
+ rep.height = pRoot->drawable.height;
+ rep.window = stuff->window;
+ rep.screen = stuff->screen;
+ if(client->swapped) {
+ swaps(&rep.sequenceNumber, n);
+ swapl(&rep.length, n);
+ swapl(&rep.width, n);
+ swapl(&rep.height, n);
+ swapl(&rep.window, n);
+ swapl(&rep.screen, n);
+ }
+ WriteToClient(client, sizeof(xPanoramiXGetScreenSizeReply), (char *)&rep);
+ return client->noClientException;
+}
+
+int
+ProcRRXineramaIsActive(ClientPtr client)
+{
+ xXineramaIsActiveReply rep;
+
+ REQUEST_SIZE_MATCH(xXineramaIsActiveReq);
+
+ rep.type = X_Reply;
+ rep.length = 0;
+ rep.sequenceNumber = client->sequence;
+ rep.state = RRXineramaScreenActive (screenInfo.screens[RR_XINERAMA_SCREEN]);
+ if(client->swapped) {
+ register int n;
+ swaps(&rep.sequenceNumber, n);
+ swapl(&rep.length, n);
+ swapl(&rep.state, n);
+ }
+ WriteToClient(client, sizeof(xXineramaIsActiveReply), (char *) &rep);
+ return client->noClientException;
+}
+
+int
+ProcRRXineramaQueryScreens(ClientPtr client)
+{
+ xXineramaQueryScreensReply rep;
+ ScreenPtr pScreen = screenInfo.screens[RR_XINERAMA_SCREEN];
+
+ REQUEST_SIZE_MATCH(xXineramaQueryScreensReq);
+
+ if (RRXineramaScreenActive (pScreen))
+ {
+ rrScrPriv(pScreen);
+ if (pScrPriv->numCrtcs == 0 || pScrPriv->numOutputs == 0)
+ RRGetInfo (pScreen);
+ }
+
+ rep.type = X_Reply;
+ rep.sequenceNumber = client->sequence;
+ rep.number = RRXineramaScreenCount (pScreen);
+ rep.length = rep.number * sz_XineramaScreenInfo >> 2;
+ if(client->swapped) {
+ register int n;
+ swaps(&rep.sequenceNumber, n);
+ swapl(&rep.length, n);
+ swapl(&rep.number, n);
+ }
+ WriteToClient(client, sizeof(xXineramaQueryScreensReply), (char *)&rep);
+
+ if(rep.number) {
+ rrScrPriv(pScreen);
+ xXineramaScreenInfo scratch;
+ int i;
+
+ for(i = 0; i < pScrPriv->numCrtcs; i++) {
+ RRCrtcPtr crtc = pScrPriv->crtcs[i];
+ if (RRXineramaCrtcActive (crtc))
+ {
+ int width, height;
+ RRCrtcGetScanoutSize (crtc, &width, &height);
+ scratch.x_org = crtc->x;
+ scratch.y_org = crtc->y;
+ scratch.width = width;
+ scratch.height = height;
+ if(client->swapped) {
+ register int n;
+ swaps(&scratch.x_org, n);
+ swaps(&scratch.y_org, n);
+ swaps(&scratch.width, n);
+ swaps(&scratch.height, n);
+ }
+ WriteToClient(client, sz_XineramaScreenInfo, (char *)&scratch);
+ }
+ }
+ }
+
+ return client->noClientException;
+}
+
+static int
+ProcRRXineramaDispatch(ClientPtr client)
+{
+ REQUEST(xReq);
+ switch (stuff->data) {
+ case X_PanoramiXQueryVersion:
+ return ProcRRXineramaQueryVersion(client);
+ case X_PanoramiXGetState:
+ return ProcRRXineramaGetState(client);
+ case X_PanoramiXGetScreenCount:
+ return ProcRRXineramaGetScreenCount(client);
+ case X_PanoramiXGetScreenSize:
+ return ProcRRXineramaGetScreenSize(client);
+ case X_XineramaIsActive:
+ return ProcRRXineramaIsActive(client);
+ case X_XineramaQueryScreens:
+ return ProcRRXineramaQueryScreens(client);
+ }
+ return BadRequest;
+}
+
+/* SProc */
+
+static int
+SProcRRXineramaQueryVersion (ClientPtr client)
+{
+ REQUEST(xPanoramiXQueryVersionReq);
+ register int n;
+ swaps(&stuff->length,n);
+ REQUEST_SIZE_MATCH (xPanoramiXQueryVersionReq);
+ return ProcRRXineramaQueryVersion(client);
+}
+
+static int
+SProcRRXineramaGetState(ClientPtr client)
+{
+ REQUEST(xPanoramiXGetStateReq);
+ register int n;
+ swaps (&stuff->length, n);
+ REQUEST_SIZE_MATCH(xPanoramiXGetStateReq);
+ swapl (&stuff->window, n);
+ return ProcRRXineramaGetState(client);
+}
+
+static int
+SProcRRXineramaGetScreenCount(ClientPtr client)
+{
+ REQUEST(xPanoramiXGetScreenCountReq);
+ register int n;
+ swaps (&stuff->length, n);
+ REQUEST_SIZE_MATCH(xPanoramiXGetScreenCountReq);
+ swapl (&stuff->window, n);
+ return ProcRRXineramaGetScreenCount(client);
+}
+
+static int
+SProcRRXineramaGetScreenSize(ClientPtr client)
+{
+ REQUEST(xPanoramiXGetScreenSizeReq);
+ register int n;
+ swaps (&stuff->length, n);
+ REQUEST_SIZE_MATCH(xPanoramiXGetScreenSizeReq);
+ swapl (&stuff->window, n);
+ swapl (&stuff->screen, n);
+ return ProcRRXineramaGetScreenSize(client);
+}
+
+static int
+SProcRRXineramaIsActive(ClientPtr client)
+{
+ REQUEST(xXineramaIsActiveReq);
+ register int n;
+ swaps (&stuff->length, n);
+ REQUEST_SIZE_MATCH(xXineramaIsActiveReq);
+ return ProcRRXineramaIsActive(client);
+}
+
+static int
+SProcRRXineramaQueryScreens(ClientPtr client)
+{
+ REQUEST(xXineramaQueryScreensReq);
+ register int n;
+ swaps (&stuff->length, n);
+ REQUEST_SIZE_MATCH(xXineramaQueryScreensReq);
+ return ProcRRXineramaQueryScreens(client);
+}
+
+int
+SProcRRXineramaDispatch(ClientPtr client)
+{
+ REQUEST(xReq);
+ switch (stuff->data) {
+ case X_PanoramiXQueryVersion:
+ return SProcRRXineramaQueryVersion(client);
+ case X_PanoramiXGetState:
+ return SProcRRXineramaGetState(client);
+ case X_PanoramiXGetScreenCount:
+ return SProcRRXineramaGetScreenCount(client);
+ case X_PanoramiXGetScreenSize:
+ return SProcRRXineramaGetScreenSize(client);
+ case X_XineramaIsActive:
+ return SProcRRXineramaIsActive(client);
+ case X_XineramaQueryScreens:
+ return SProcRRXineramaQueryScreens(client);
+ }
+ return BadRequest;
+}
+
+static void
+RRXineramaResetProc(ExtensionEntry* extEntry)
+{
+}
+
+void
+RRXineramaExtensionInit(void)
+{
+#ifdef PANORAMIX
+ if(!noPanoramiXExtension)
+ return;
+#endif
+
+ /*
+ * Xinerama isn't capable enough to have multiple protocol screens each
+ * with their own output geometry. So if there's more than one protocol
+ * screen, just don't even try.
+ */
+ if (screenInfo.numScreens > 1)
+ return;
+
+ (void) AddExtension(PANORAMIX_PROTOCOL_NAME, 0,0,
+ ProcRRXineramaDispatch,
+ SProcRRXineramaDispatch,
+ RRXineramaResetProc,
+ StandardMinorOpcode);
+}
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