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-rw-r--r--xorg-server/randr/randr.c487
1 files changed, 487 insertions, 0 deletions
diff --git a/xorg-server/randr/randr.c b/xorg-server/randr/randr.c
new file mode 100644
index 000000000..bc2b995d2
--- /dev/null
+++ b/xorg-server/randr/randr.c
@@ -0,0 +1,487 @@
+/*
+ * Copyright © 2000 Compaq Computer Corporation
+ * Copyright © 2002 Hewlett-Packard Company
+ * Copyright © 2006 Intel Corporation
+ *
+ * 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.
+ *
+ * Author: Jim Gettys, Hewlett-Packard Company, Inc.
+ * Keith Packard, Intel Corporation
+ */
+
+#define NEED_REPLIES
+#define NEED_EVENTS
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include "randrstr.h"
+
+/* From render.h */
+#ifndef SubPixelUnknown
+#define SubPixelUnknown 0
+#endif
+
+#define RR_VALIDATE
+static int RRNScreens;
+
+#define wrap(priv,real,mem,func) {\
+ priv->mem = real->mem; \
+ real->mem = func; \
+}
+
+#define unwrap(priv,real,mem) {\
+ real->mem = priv->mem; \
+}
+
+static int ProcRRDispatch (ClientPtr pClient);
+static int SProcRRDispatch (ClientPtr pClient);
+
+int RREventBase;
+int RRErrorBase;
+RESTYPE RRClientType, RREventType; /* resource types for event masks */
+DevPrivateKey RRClientPrivateKey = &RRClientPrivateKey;
+
+DevPrivateKey rrPrivKey = &rrPrivKey;
+
+static void
+RRClientCallback (CallbackListPtr *list,
+ pointer closure,
+ pointer data)
+{
+ NewClientInfoRec *clientinfo = (NewClientInfoRec *) data;
+ ClientPtr pClient = clientinfo->client;
+ rrClientPriv(pClient);
+ RRTimesPtr pTimes = (RRTimesPtr) (pRRClient + 1);
+ int i;
+
+ pRRClient->major_version = 0;
+ pRRClient->minor_version = 0;
+ for (i = 0; i < screenInfo.numScreens; i++)
+ {
+ ScreenPtr pScreen = screenInfo.screens[i];
+ rrScrPriv(pScreen);
+
+ if (pScrPriv)
+ {
+ pTimes[i].setTime = pScrPriv->lastSetTime;
+ pTimes[i].configTime = pScrPriv->lastConfigTime;
+ }
+ }
+}
+
+static void
+RRResetProc (ExtensionEntry *extEntry)
+{
+}
+
+static Bool
+RRCloseScreen (int i, ScreenPtr pScreen)
+{
+ rrScrPriv(pScreen);
+ int j;
+
+ unwrap (pScrPriv, pScreen, CloseScreen);
+ for (j = pScrPriv->numCrtcs - 1; j >= 0; j--)
+ RRCrtcDestroy (pScrPriv->crtcs[j]);
+ for (j = pScrPriv->numOutputs - 1; j >= 0; j--)
+ RROutputDestroy (pScrPriv->outputs[j]);
+
+ xfree (pScrPriv);
+ RRNScreens -= 1; /* ok, one fewer screen with RandR running */
+ return (*pScreen->CloseScreen) (i, pScreen);
+}
+
+static void
+SRRScreenChangeNotifyEvent(xRRScreenChangeNotifyEvent *from,
+ xRRScreenChangeNotifyEvent *to)
+{
+ to->type = from->type;
+ to->rotation = from->rotation;
+ cpswaps(from->sequenceNumber, to->sequenceNumber);
+ cpswapl(from->timestamp, to->timestamp);
+ cpswapl(from->configTimestamp, to->configTimestamp);
+ cpswapl(from->root, to->root);
+ cpswapl(from->window, to->window);
+ cpswaps(from->sizeID, to->sizeID);
+ cpswaps(from->widthInPixels, to->widthInPixels);
+ cpswaps(from->heightInPixels, to->heightInPixels);
+ cpswaps(from->widthInMillimeters, to->widthInMillimeters);
+ cpswaps(from->heightInMillimeters, to->heightInMillimeters);
+ cpswaps(from->subpixelOrder, to->subpixelOrder);
+}
+
+static void
+SRRCrtcChangeNotifyEvent(xRRCrtcChangeNotifyEvent *from,
+ xRRCrtcChangeNotifyEvent *to)
+{
+ to->type = from->type;
+ to->subCode = from->subCode;
+ cpswaps(from->sequenceNumber, to->sequenceNumber);
+ cpswapl(from->timestamp, to->timestamp);
+ cpswapl(from->window, to->window);
+ cpswapl(from->crtc, to->crtc);
+ cpswapl(from->mode, to->mode);
+ cpswapl(from->window, to->window);
+ cpswaps(from->rotation, to->rotation);
+ cpswaps(from->x, to->x);
+ cpswaps(from->y, to->y);
+ cpswaps(from->width, to->width);
+ cpswaps(from->height, to->height);
+}
+
+static void
+SRROutputChangeNotifyEvent(xRROutputChangeNotifyEvent *from,
+ xRROutputChangeNotifyEvent *to)
+{
+ to->type = from->type;
+ to->subCode = from->subCode;
+ cpswaps(from->sequenceNumber, to->sequenceNumber);
+ cpswapl(from->timestamp, to->timestamp);
+ cpswapl(from->configTimestamp, to->configTimestamp);
+ cpswapl(from->window, to->window);
+ cpswapl(from->output, to->output);
+ cpswapl(from->crtc, to->crtc);
+ cpswapl(from->mode, to->mode);
+ cpswaps(from->rotation, to->rotation);
+}
+
+static void
+SRROutputPropertyNotifyEvent(xRROutputPropertyNotifyEvent *from,
+ xRROutputPropertyNotifyEvent *to)
+{
+ to->type = from->type;
+ to->subCode = from->subCode;
+ cpswaps(from->sequenceNumber, to->sequenceNumber);
+ cpswapl(from->window, to->window);
+ cpswapl(from->output, to->output);
+ cpswapl(from->atom, to->atom);
+ cpswapl(from->timestamp, to->timestamp);
+}
+
+static void
+SRRNotifyEvent (xEvent *from,
+ xEvent *to)
+{
+ switch (from->u.u.detail) {
+ case RRNotify_CrtcChange:
+ SRRCrtcChangeNotifyEvent ((xRRCrtcChangeNotifyEvent *) from,
+ (xRRCrtcChangeNotifyEvent *) to);
+ break;
+ case RRNotify_OutputChange:
+ SRROutputChangeNotifyEvent ((xRROutputChangeNotifyEvent *) from,
+ (xRROutputChangeNotifyEvent *) to);
+ break;
+ case RRNotify_OutputProperty:
+ SRROutputPropertyNotifyEvent ((xRROutputPropertyNotifyEvent *) from,
+ (xRROutputPropertyNotifyEvent *) to);
+ break;
+ default:
+ break;
+ }
+}
+
+static int RRGeneration;
+
+Bool RRInit (void)
+{
+ if (RRGeneration != serverGeneration)
+ {
+ if (!RRModeInit ())
+ return FALSE;
+ if (!RRCrtcInit ())
+ return FALSE;
+ if (!RROutputInit ())
+ return FALSE;
+ RRGeneration = serverGeneration;
+ }
+ return TRUE;
+}
+
+Bool RRScreenInit(ScreenPtr pScreen)
+{
+ rrScrPrivPtr pScrPriv;
+
+ if (!RRInit ())
+ return FALSE;
+
+ pScrPriv = (rrScrPrivPtr) xcalloc (1, sizeof (rrScrPrivRec));
+ if (!pScrPriv)
+ return FALSE;
+
+ SetRRScreen(pScreen, pScrPriv);
+
+ /*
+ * Calling function best set these function vectors
+ */
+ pScrPriv->rrGetInfo = 0;
+ pScrPriv->maxWidth = pScrPriv->minWidth = pScreen->width;
+ pScrPriv->maxHeight = pScrPriv->minHeight = pScreen->height;
+
+ pScrPriv->width = pScreen->width;
+ pScrPriv->height = pScreen->height;
+ pScrPriv->mmWidth = pScreen->mmWidth;
+ pScrPriv->mmHeight = pScreen->mmHeight;
+#if RANDR_12_INTERFACE
+ pScrPriv->rrScreenSetSize = NULL;
+ pScrPriv->rrCrtcSet = NULL;
+ pScrPriv->rrCrtcSetGamma = NULL;
+#endif
+#if RANDR_10_INTERFACE
+ pScrPriv->rrSetConfig = 0;
+ pScrPriv->rotations = RR_Rotate_0;
+ pScrPriv->reqWidth = pScreen->width;
+ pScrPriv->reqHeight = pScreen->height;
+ pScrPriv->nSizes = 0;
+ pScrPriv->pSizes = NULL;
+ pScrPriv->rotation = RR_Rotate_0;
+ pScrPriv->rate = 0;
+ pScrPriv->size = 0;
+#endif
+
+ /*
+ * This value doesn't really matter -- any client must call
+ * GetScreenInfo before reading it which will automatically update
+ * the time
+ */
+ pScrPriv->lastSetTime = currentTime;
+ pScrPriv->lastConfigTime = currentTime;
+
+ wrap (pScrPriv, pScreen, CloseScreen, RRCloseScreen);
+
+ pScrPriv->numOutputs = 0;
+ pScrPriv->outputs = NULL;
+ pScrPriv->numCrtcs = 0;
+ pScrPriv->crtcs = NULL;
+
+ RRNScreens += 1; /* keep count of screens that implement randr */
+ return TRUE;
+}
+
+/*ARGSUSED*/
+static int
+RRFreeClient (pointer data, XID id)
+{
+ RREventPtr pRREvent;
+ WindowPtr pWin;
+ RREventPtr *pHead, pCur, pPrev;
+
+ pRREvent = (RREventPtr) data;
+ pWin = pRREvent->window;
+ pHead = (RREventPtr *) LookupIDByType(pWin->drawable.id, RREventType);
+ if (pHead) {
+ pPrev = 0;
+ for (pCur = *pHead; pCur && pCur != pRREvent; pCur=pCur->next)
+ pPrev = pCur;
+ if (pCur)
+ {
+ if (pPrev)
+ pPrev->next = pRREvent->next;
+ else
+ *pHead = pRREvent->next;
+ }
+ }
+ xfree ((pointer) pRREvent);
+ return 1;
+}
+
+/*ARGSUSED*/
+static int
+RRFreeEvents (pointer data, XID id)
+{
+ RREventPtr *pHead, pCur, pNext;
+
+ pHead = (RREventPtr *) data;
+ for (pCur = *pHead; pCur; pCur = pNext) {
+ pNext = pCur->next;
+ FreeResource (pCur->clientResource, RRClientType);
+ xfree ((pointer) pCur);
+ }
+ xfree ((pointer) pHead);
+ return 1;
+}
+
+void
+RRExtensionInit (void)
+{
+ ExtensionEntry *extEntry;
+
+ if (RRNScreens == 0) return;
+
+ if (!dixRequestPrivate(RRClientPrivateKey,
+ sizeof (RRClientRec) +
+ screenInfo.numScreens * sizeof (RRTimesRec)))
+ return;
+ if (!AddCallback (&ClientStateCallback, RRClientCallback, 0))
+ return;
+
+ RRClientType = CreateNewResourceType(RRFreeClient);
+ if (!RRClientType)
+ return;
+ RREventType = CreateNewResourceType(RRFreeEvents);
+ if (!RREventType)
+ return;
+ extEntry = AddExtension (RANDR_NAME, RRNumberEvents, RRNumberErrors,
+ ProcRRDispatch, SProcRRDispatch,
+ RRResetProc, StandardMinorOpcode);
+ if (!extEntry)
+ return;
+ RRErrorBase = extEntry->errorBase;
+ RREventBase = extEntry->eventBase;
+ EventSwapVector[RREventBase + RRScreenChangeNotify] = (EventSwapPtr)
+ SRRScreenChangeNotifyEvent;
+ EventSwapVector[RREventBase + RRNotify] = (EventSwapPtr)
+ SRRNotifyEvent;
+#ifdef PANORAMIX
+ RRXineramaExtensionInit();
+#endif
+}
+
+static int
+TellChanged (WindowPtr pWin, pointer value)
+{
+ RREventPtr *pHead, pRREvent;
+ ClientPtr client;
+ ScreenPtr pScreen = pWin->drawable.pScreen;
+ rrScrPriv(pScreen);
+ int i;
+
+ pHead = (RREventPtr *) LookupIDByType (pWin->drawable.id, RREventType);
+ if (!pHead)
+ return WT_WALKCHILDREN;
+
+ for (pRREvent = *pHead; pRREvent; pRREvent = pRREvent->next)
+ {
+ client = pRREvent->client;
+ if (client == serverClient || client->clientGone)
+ continue;
+
+ if (pRREvent->mask & RRScreenChangeNotifyMask)
+ RRDeliverScreenEvent (client, pWin, pScreen);
+
+ if (pRREvent->mask & RRCrtcChangeNotifyMask)
+ {
+ for (i = 0; i < pScrPriv->numCrtcs; i++)
+ {
+ RRCrtcPtr crtc = pScrPriv->crtcs[i];
+ if (crtc->changed)
+ RRDeliverCrtcEvent (client, pWin, crtc);
+ }
+ }
+
+ if (pRREvent->mask & RROutputChangeNotifyMask)
+ {
+ for (i = 0; i < pScrPriv->numOutputs; i++)
+ {
+ RROutputPtr output = pScrPriv->outputs[i];
+ if (output->changed)
+ RRDeliverOutputEvent (client, pWin, output);
+ }
+ }
+ }
+ return WT_WALKCHILDREN;
+}
+
+/*
+ * Something changed; send events and adjust pointer position
+ */
+void
+RRTellChanged (ScreenPtr pScreen)
+{
+ rrScrPriv (pScreen);
+ int i;
+
+ if (pScrPriv->changed)
+ {
+ UpdateCurrentTime ();
+ if (pScrPriv->configChanged)
+ {
+ pScrPriv->lastConfigTime = currentTime;
+ pScrPriv->configChanged = FALSE;
+ }
+ pScrPriv->changed = FALSE;
+ WalkTree (pScreen, TellChanged, (pointer) pScreen);
+ for (i = 0; i < pScrPriv->numOutputs; i++)
+ pScrPriv->outputs[i]->changed = FALSE;
+ for (i = 0; i < pScrPriv->numCrtcs; i++)
+ pScrPriv->crtcs[i]->changed = FALSE;
+ if (pScrPriv->layoutChanged)
+ {
+ pScrPriv->layoutChanged = FALSE;
+ RRPointerScreenConfigured (pScreen);
+ RRSendConfigNotify (pScreen);
+ }
+ }
+}
+
+/*
+ * Return the first output which is connected to an active CRTC
+ * Used in emulating 1.0 behaviour
+ */
+RROutputPtr
+RRFirstOutput (ScreenPtr pScreen)
+{
+ rrScrPriv(pScreen);
+ RROutputPtr output;
+ int i, j;
+
+ for (i = 0; i < pScrPriv->numCrtcs; i++)
+ {
+ RRCrtcPtr crtc = pScrPriv->crtcs[i];
+ for (j = 0; j < pScrPriv->numOutputs; j++)
+ {
+ output = pScrPriv->outputs[j];
+ if (output->crtc == crtc)
+ return output;
+ }
+ }
+ return NULL;
+}
+
+CARD16
+RRVerticalRefresh (xRRModeInfo *mode)
+{
+ CARD32 refresh;
+ CARD32 dots = mode->hTotal * mode->vTotal;
+ if (!dots)
+ return 0;
+ refresh = (mode->dotClock + dots/2) / dots;
+ if (refresh > 0xffff)
+ refresh = 0xffff;
+ return (CARD16) refresh;
+}
+
+static int
+ProcRRDispatch (ClientPtr client)
+{
+ REQUEST(xReq);
+ if (stuff->data >= RRNumberRequests || !ProcRandrVector[stuff->data])
+ return BadRequest;
+ return (*ProcRandrVector[stuff->data]) (client);
+}
+
+static int
+SProcRRDispatch (ClientPtr client)
+{
+ REQUEST(xReq);
+ if (stuff->data >= RRNumberRequests || !ProcRandrVector[stuff->data])
+ return BadRequest;
+ return (*SProcRandrVector[stuff->data]) (client);
+}
+