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xserver/randr/rrxinerama.c

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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 <dix-config.h>
#include <X11/Xmd.h>
#include <X11/extensions/panoramiXproto.h>
#include "dix/dix_priv.h"
#include "randr/randrstr_priv.h"
#include "swaprep.h"
#include "protocol-versions.h"
/* 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 _X_COLD SProcRRXineramaDispatch(ClientPtr client);
Bool noRRXineramaExtension = FALSE;
/* Proc */
int
ProcRRXineramaQueryVersion(ClientPtr client)
{
xPanoramiXQueryVersionReply rep = {
.type = X_Reply,
.sequenceNumber = client->sequence,
.length = 0,
.majorVersion = SERVER_RRXINERAMA_MAJOR_VERSION,
.minorVersion = SERVER_RRXINERAMA_MINOR_VERSION
};
REQUEST_SIZE_MATCH(xPanoramiXQueryVersionReq);
if (client->swapped) {
swaps(&rep.sequenceNumber);
swapl(&rep.length);
swaps(&rep.majorVersion);
swaps(&rep.minorVersion);
}
WriteToClient(client, sizeof(xPanoramiXQueryVersionReply), &rep);
return Success;
}
int
ProcRRXineramaGetState(ClientPtr client)
{
REQUEST(xPanoramiXGetStateReq);
WindowPtr pWin;
xPanoramiXGetStateReply rep;
register int 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 = (xPanoramiXGetStateReply) {
.type = X_Reply,
.state = active,
.sequenceNumber = client->sequence,
.length = 0,
.window = stuff->window
};
if (client->swapped) {
swaps(&rep.sequenceNumber);
swapl(&rep.length);
swapl(&rep.window);
}
WriteToClient(client, sizeof(xPanoramiXGetStateReply), &rep);
return Success;
}
static int
RRXineramaScreenCount(ScreenPtr pScreen)
{
return RRMonitorCountList(pScreen);
}
static Bool
RRXineramaScreenActive(ScreenPtr pScreen)
{
return RRXineramaScreenCount(pScreen) > 0;
}
int
ProcRRXineramaGetScreenCount(ClientPtr client)
{
REQUEST(xPanoramiXGetScreenCountReq);
WindowPtr pWin;
xPanoramiXGetScreenCountReply rep;
register int rc;
REQUEST_SIZE_MATCH(xPanoramiXGetScreenCountReq);
rc = dixLookupWindow(&pWin, stuff->window, client, DixGetAttrAccess);
if (rc != Success)
return rc;
rep = (xPanoramiXGetScreenCountReply) {
.type = X_Reply,
.ScreenCount = RRXineramaScreenCount(pWin->drawable.pScreen),
.sequenceNumber = client->sequence,
.length = 0,
.window = stuff->window
};
if (client->swapped) {
swaps(&rep.sequenceNumber);
swapl(&rep.length);
swapl(&rep.window);
}
WriteToClient(client, sizeof(xPanoramiXGetScreenCountReply), &rep);
return Success;
}
int
ProcRRXineramaGetScreenSize(ClientPtr client)
{
REQUEST(xPanoramiXGetScreenSizeReq);
WindowPtr pWin, pRoot;
ScreenPtr pScreen;
xPanoramiXGetScreenSizeReply rep;
register int rc;
REQUEST_SIZE_MATCH(xPanoramiXGetScreenSizeReq);
rc = dixLookupWindow(&pWin, stuff->window, client, DixGetAttrAccess);
if (rc != Success)
return rc;
pScreen = pWin->drawable.pScreen;
pRoot = pScreen->root;
rep = (xPanoramiXGetScreenSizeReply) {
.type = X_Reply,
.sequenceNumber = client->sequence,
.length = 0,
.width = pRoot->drawable.width,
.height = pRoot->drawable.height,
.window = stuff->window,
.screen = stuff->screen
};
if (client->swapped) {
swaps(&rep.sequenceNumber);
swapl(&rep.length);
swapl(&rep.width);
swapl(&rep.height);
swapl(&rep.window);
swapl(&rep.screen);
}
WriteToClient(client, sizeof(xPanoramiXGetScreenSizeReply), &rep);
return Success;
}
int
ProcRRXineramaIsActive(ClientPtr client)
{
xXineramaIsActiveReply rep;
REQUEST_SIZE_MATCH(xXineramaIsActiveReq);
rep = (xXineramaIsActiveReply) {
.type = X_Reply,
.length = 0,
.sequenceNumber = client->sequence,
.state = RRXineramaScreenActive(screenInfo.screens[RR_XINERAMA_SCREEN])
};
if (client->swapped) {
swaps(&rep.sequenceNumber);
swapl(&rep.length);
swapl(&rep.state);
}
WriteToClient(client, sizeof(xXineramaIsActiveReply), &rep);
return Success;
}
static void
RRXineramaWriteMonitor(ClientPtr client, RRMonitorPtr monitor)
{
xXineramaScreenInfo scratch;
scratch.x_org = monitor->geometry.box.x1;
scratch.y_org = monitor->geometry.box.y1;
scratch.width = monitor->geometry.box.x2 - monitor->geometry.box.x1;
scratch.height = monitor->geometry.box.y2 - monitor->geometry.box.y1;
if (client->swapped) {
swaps(&scratch.x_org);
swaps(&scratch.y_org);
swaps(&scratch.width);
swaps(&scratch.height);
}
WriteToClient(client, sz_XineramaScreenInfo, &scratch);
}
int
ProcRRXineramaQueryScreens(ClientPtr client)
{
xXineramaQueryScreensReply rep;
ScreenPtr pScreen = screenInfo.screens[RR_XINERAMA_SCREEN];
int m;
RRMonitorPtr monitors = NULL;
int nmonitors = 0;
REQUEST_SIZE_MATCH(xXineramaQueryScreensReq);
if (RRXineramaScreenActive(pScreen)) {
RRGetInfo(pScreen, FALSE);
if (!RRMonitorMakeList(pScreen, TRUE, &monitors, &nmonitors))
return BadAlloc;
}
rep = (xXineramaQueryScreensReply) {
.type = X_Reply,
.sequenceNumber = client->sequence,
.length = bytes_to_int32(nmonitors * sz_XineramaScreenInfo),
.number = nmonitors
};
if (client->swapped) {
swaps(&rep.sequenceNumber);
swapl(&rep.length);
swapl(&rep.number);
}
WriteToClient(client, sizeof(xXineramaQueryScreensReply), &rep);
for (m = 0; m < nmonitors; m++)
RRXineramaWriteMonitor(client, &monitors[m]);
if (monitors)
RRMonitorFreeList(monitors, nmonitors);
return Success;
}
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 _X_COLD
SProcRRXineramaGetState(ClientPtr client)
{
REQUEST(xPanoramiXGetStateReq);
REQUEST_SIZE_MATCH(xPanoramiXGetStateReq);
swapl(&stuff->window);
return ProcRRXineramaGetState(client);
}
static int _X_COLD
SProcRRXineramaGetScreenCount(ClientPtr client)
{
REQUEST(xPanoramiXGetScreenCountReq);
REQUEST_SIZE_MATCH(xPanoramiXGetScreenCountReq);
swapl(&stuff->window);
return ProcRRXineramaGetScreenCount(client);
}
static int _X_COLD
SProcRRXineramaGetScreenSize(ClientPtr client)
{
REQUEST(xPanoramiXGetScreenSizeReq);
REQUEST_SIZE_MATCH(xPanoramiXGetScreenSizeReq);
swapl(&stuff->window);
swapl(&stuff->screen);
return ProcRRXineramaGetScreenSize(client);
}
int
SProcRRXineramaDispatch(ClientPtr client)
{
REQUEST(xReq);
switch (stuff->data) {
case X_PanoramiXQueryVersion:
return ProcRRXineramaQueryVersion(client);
case X_PanoramiXGetState:
return SProcRRXineramaGetState(client);
case X_PanoramiXGetScreenCount:
return SProcRRXineramaGetScreenCount(client);
case X_PanoramiXGetScreenSize:
return SProcRRXineramaGetScreenSize(client);
case X_XineramaIsActive:
return ProcRRXineramaIsActive(client);
case X_XineramaQueryScreens:
return ProcRRXineramaQueryScreens(client);
}
return BadRequest;
}
void
RRXineramaExtensionInit(void)
{
#ifdef XINERAMA
if (!noPanoramiXExtension)
return;
#endif /* XINERAMA */
if (noRRXineramaExtension)
return;
/*
* 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, NULL, StandardMinorOpcode);
}
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