xenocara/xserver/randr/randr.c

488 lines
13 KiB
C

/*
* 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);
}