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xwayland/randr/randr.c

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/*
* Copyright © 2000 Compaq Computer Corporation
* Copyright © 2002 Hewlett-Packard Company
* Copyright © 2006 Intel Corporation
* Copyright © 2017 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.
*
* Author: Jim Gettys, Hewlett-Packard Company, Inc.
* Keith Packard, Intel Corporation
*/
#ifdef HAVE_DIX_CONFIG_H
#include <dix-config.h>
#endif
#include "randrstr.h"
#include "extinit.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 */
DevPrivateKeyRec RRClientPrivateKeyRec;
DevPrivateKeyRec rrPrivKeyRec;
static void
RRClientCallback(CallbackListPtr *list, void *closure, void *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 Bool
RRCloseScreen(ScreenPtr pScreen)
{
rrScrPriv(pScreen);
int j;
RRLeasePtr lease, next;
unwrap(pScrPriv, pScreen, CloseScreen);
xorg_list_for_each_entry_safe(lease, next, &pScrPriv->leases, list)
RRTerminateLease(lease);
for (j = pScrPriv->numCrtcs - 1; j >= 0; j--)
RRCrtcDestroy(pScrPriv->crtcs[j]);
for (j = pScrPriv->numOutputs - 1; j >= 0; j--)
RROutputDestroy(pScrPriv->outputs[j]);
if (pScrPriv->provider)
RRProviderDestroy(pScrPriv->provider);
RRMonitorClose(pScreen);
free(pScrPriv->crtcs);
free(pScrPriv->outputs);
free(pScrPriv);
RRNScreens -= 1; /* ok, one fewer screen with RandR running */
return (*pScreen->CloseScreen) (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->subpixelOrder, to->subpixelOrder);
cpswaps(from->widthInPixels, to->widthInPixels);
cpswaps(from->heightInPixels, to->heightInPixels);
cpswaps(from->widthInMillimeters, to->widthInMillimeters);
cpswaps(from->heightInMillimeters, to->heightInMillimeters);
}
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);
cpswaps(from->rotation, to->rotation);
/* pad1 */
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);
to->connection = from->connection;
to->subpixelOrder = from->subpixelOrder;
}
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);
to->state = from->state;
/* pad1 */
/* pad2 */
/* pad3 */
/* pad4 */
}
static void
SRRProviderChangeNotifyEvent(xRRProviderChangeNotifyEvent * from,
xRRProviderChangeNotifyEvent * 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->provider, to->provider);
}
static void
SRRProviderPropertyNotifyEvent(xRRProviderPropertyNotifyEvent * from,
xRRProviderPropertyNotifyEvent * to)
{
to->type = from->type;
to->subCode = from->subCode;
cpswaps(from->sequenceNumber, to->sequenceNumber);
cpswapl(from->window, to->window);
cpswapl(from->provider, to->provider);
cpswapl(from->atom, to->atom);
cpswapl(from->timestamp, to->timestamp);
to->state = from->state;
/* pad1 */
/* pad2 */
/* pad3 */
/* pad4 */
}
static void _X_COLD
SRRResourceChangeNotifyEvent(xRRResourceChangeNotifyEvent * from,
xRRResourceChangeNotifyEvent * to)
{
to->type = from->type;
to->subCode = from->subCode;
cpswaps(from->sequenceNumber, to->sequenceNumber);
cpswapl(from->timestamp, to->timestamp);
cpswapl(from->window, to->window);
}
static void _X_COLD
SRRLeaseNotifyEvent(xRRLeaseNotifyEvent * from,
xRRLeaseNotifyEvent * 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->lease, to->lease);
to->created = from->created;
}
static void _X_COLD
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;
case RRNotify_ProviderChange:
SRRProviderChangeNotifyEvent((xRRProviderChangeNotifyEvent *) from,
(xRRProviderChangeNotifyEvent *) to);
break;
case RRNotify_ProviderProperty:
SRRProviderPropertyNotifyEvent((xRRProviderPropertyNotifyEvent *) from,
(xRRProviderPropertyNotifyEvent *) to);
break;
case RRNotify_ResourceChange:
SRRResourceChangeNotifyEvent((xRRResourceChangeNotifyEvent *) from,
(xRRResourceChangeNotifyEvent *) to);
break;
case RRNotify_Lease:
SRRLeaseNotifyEvent((xRRLeaseNotifyEvent *) from,
(xRRLeaseNotifyEvent *) 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;
if (!RRProviderInit())
return FALSE;
if (!RRLeaseInit())
return FALSE;
RRGeneration = serverGeneration;
}
if (!dixRegisterPrivateKey(&rrPrivKeyRec, PRIVATE_SCREEN, 0))
return FALSE;
return TRUE;
}
Bool
RRScreenInit(ScreenPtr pScreen)
{
rrScrPrivPtr pScrPriv;
if (!RRInit())
return FALSE;
pScrPriv = (rrScrPrivPtr) calloc(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);
pScreen->ConstrainCursorHarder = RRConstrainCursorHarder;
pScreen->ReplaceScanoutPixmap = RRReplaceScanoutPixmap;
pScrPriv->numOutputs = 0;
pScrPriv->outputs = NULL;
pScrPriv->numCrtcs = 0;
pScrPriv->crtcs = NULL;
xorg_list_init(&pScrPriv->leases);
RRMonitorInit(pScreen);
RRNScreens += 1; /* keep count of screens that implement randr */
return TRUE;
}
/*ARGSUSED*/ static int
RRFreeClient(void *data, XID id)
{
RREventPtr pRREvent;
WindowPtr pWin;
RREventPtr *pHead, pCur, pPrev;
pRREvent = (RREventPtr) data;
pWin = pRREvent->window;
dixLookupResourceByType((void **) &pHead, pWin->drawable.id,
RREventType, serverClient, DixDestroyAccess);
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;
}
}
free((void *) pRREvent);
return 1;
}
/*ARGSUSED*/ static int
RRFreeEvents(void *data, XID id)
{
RREventPtr *pHead, pCur, pNext;
pHead = (RREventPtr *) data;
for (pCur = *pHead; pCur; pCur = pNext) {
pNext = pCur->next;
FreeResource(pCur->clientResource, RRClientType);
free((void *) pCur);
}
free((void *) pHead);
return 1;
}
void
RRExtensionInit(void)
{
ExtensionEntry *extEntry;
if (RRNScreens == 0)
return;
if (!dixRegisterPrivateKey(&RRClientPrivateKeyRec, PRIVATE_CLIENT,
sizeof(RRClientRec) +
screenInfo.numScreens * sizeof(RRTimesRec)))
return;
if (!AddCallback(&ClientStateCallback, RRClientCallback, 0))
return;
RRClientType = CreateNewResourceType(RRFreeClient, "RandRClient");
if (!RRClientType)
return;
RREventType = CreateNewResourceType(RRFreeEvents, "RandREvent");
if (!RREventType)
return;
extEntry = AddExtension(RANDR_NAME, RRNumberEvents, RRNumberErrors,
ProcRRDispatch, SProcRRDispatch,
NULL, StandardMinorOpcode);
if (!extEntry)
return;
RRErrorBase = extEntry->errorBase;
RREventBase = extEntry->eventBase;
EventSwapVector[RREventBase + RRScreenChangeNotify] = (EventSwapPtr)
SRRScreenChangeNotifyEvent;
EventSwapVector[RREventBase + RRNotify] = (EventSwapPtr)
SRRNotifyEvent;
RRModeInitErrorValue();
RRCrtcInitErrorValue();
RROutputInitErrorValue();
RRProviderInitErrorValue();
#ifdef PANORAMIX
RRXineramaExtensionInit();
#endif
}
void
RRResourcesChanged(ScreenPtr pScreen)
{
rrScrPriv(pScreen);
pScrPriv->resourcesChanged = TRUE;
RRSetChanged(pScreen);
}
static void
RRDeliverResourceEvent(ClientPtr client, WindowPtr pWin)
{
ScreenPtr pScreen = pWin->drawable.pScreen;
rrScrPriv(pScreen);
xRRResourceChangeNotifyEvent re = {
.type = RRNotify + RREventBase,
.subCode = RRNotify_ResourceChange,
.timestamp = pScrPriv->lastSetTime.milliseconds,
.window = pWin->drawable.id
};
WriteEventsToClient(client, 1, (xEvent *) &re);
}
static int
TellChanged(WindowPtr pWin, void *value)
{
RREventPtr *pHead, pRREvent;
ClientPtr client;
ScreenPtr pScreen = pWin->drawable.pScreen;
ScreenPtr iter;
rrScrPrivPtr pSecondaryScrPriv;
rrScrPriv(pScreen);
int i;
dixLookupResourceByType((void **) &pHead, pWin->drawable.id,
RREventType, serverClient, DixReadAccess);
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);
}
xorg_list_for_each_entry(iter, &pScreen->secondary_list, secondary_head) {
if (!iter->is_output_secondary)
continue;
pSecondaryScrPriv = rrGetScrPriv(iter);
for (i = 0; i < pSecondaryScrPriv->numCrtcs; i++) {
RRCrtcPtr crtc = pSecondaryScrPriv->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);
}
xorg_list_for_each_entry(iter, &pScreen->secondary_list, secondary_head) {
if (!iter->is_output_secondary)
continue;
pSecondaryScrPriv = rrGetScrPriv(iter);
for (i = 0; i < pSecondaryScrPriv->numOutputs; i++) {
RROutputPtr output = pSecondaryScrPriv->outputs[i];
if (output->changed)
RRDeliverOutputEvent(client, pWin, output);
}
}
}
if (pRREvent->mask & RRProviderChangeNotifyMask) {
xorg_list_for_each_entry(iter, &pScreen->secondary_list, secondary_head) {
pSecondaryScrPriv = rrGetScrPriv(iter);
if (pSecondaryScrPriv->provider->changed)
RRDeliverProviderEvent(client, pWin, pSecondaryScrPriv->provider);
}
}
if (pRREvent->mask & RRResourceChangeNotifyMask) {
if (pScrPriv->resourcesChanged) {
RRDeliverResourceEvent(client, pWin);
}
}
if (pRREvent->mask & RRLeaseNotifyMask) {
if (pScrPriv->leasesChanged) {
RRDeliverLeaseEvent(client, pWin);
}
}
}
return WT_WALKCHILDREN;
}
void
RRSetChanged(ScreenPtr pScreen)
{
/* set changed bits on the primary screen only */
ScreenPtr primary;
rrScrPriv(pScreen);
rrScrPrivPtr primarysp;
if (pScreen->isGPU) {
primary = pScreen->current_primary;
if (!primary)
return;
primarysp = rrGetScrPriv(primary);
}
else {
primary = pScreen;
primarysp = pScrPriv;
}
primarysp->changed = TRUE;
}
/*
* Something changed; send events and adjust pointer position
*/
void
RRTellChanged(ScreenPtr pScreen)
{
ScreenPtr primary;
rrScrPriv(pScreen);
rrScrPrivPtr primarysp;
int i;
ScreenPtr iter;
rrScrPrivPtr pSecondaryScrPriv;
if (pScreen->isGPU) {
primary = pScreen->current_primary;
if (!primary)
return;
primarysp = rrGetScrPriv(primary);
}
else {
primary = pScreen;
primarysp = pScrPriv;
}
/* If there's no root window yet, can't send events */
if (!primary->root)
return;
xorg_list_for_each_entry(iter, &primary->secondary_list, secondary_head) {
pSecondaryScrPriv = rrGetScrPriv(iter);
if (!iter->is_output_secondary)
continue;
if (CompareTimeStamps(primarysp->lastSetTime,
pSecondaryScrPriv->lastSetTime) == EARLIER) {
primarysp->lastSetTime = pSecondaryScrPriv->lastSetTime;
}
}
if (primarysp->changed) {
UpdateCurrentTimeIf();
if (primarysp->configChanged) {
primarysp->lastConfigTime = currentTime;
primarysp->configChanged = FALSE;
}
pScrPriv->changed = FALSE;
primarysp->changed = FALSE;
WalkTree(primary, TellChanged, (void *) primary);
primarysp->resourcesChanged = FALSE;
for (i = 0; i < pScrPriv->numOutputs; i++)
pScrPriv->outputs[i]->changed = FALSE;
for (i = 0; i < pScrPriv->numCrtcs; i++)
pScrPriv->crtcs[i]->changed = FALSE;
xorg_list_for_each_entry(iter, &primary->secondary_list, secondary_head) {
pSecondaryScrPriv = rrGetScrPriv(iter);
pSecondaryScrPriv->provider->changed = FALSE;
if (iter->is_output_secondary) {
for (i = 0; i < pSecondaryScrPriv->numOutputs; i++)
pSecondaryScrPriv->outputs[i]->changed = FALSE;
for (i = 0; i < pSecondaryScrPriv->numCrtcs; i++)
pSecondaryScrPriv->crtcs[i]->changed = FALSE;
}
}
if (primarysp->layoutChanged) {
pScrPriv->layoutChanged = FALSE;
RRPointerScreenConfigured(primary);
RRSendConfigNotify(primary);
}
}
}
/*
* 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;
if (!pScrPriv)
return NULL;
if (pScrPriv->primaryOutput && pScrPriv->primaryOutput->crtc)
return pScrPriv->primaryOutput;
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;
}
RRCrtcPtr
RRFirstEnabledCrtc(ScreenPtr pScreen)
{
rrScrPriv(pScreen);
RROutputPtr output;
int i, j;
if (!pScrPriv)
return NULL;
if (pScrPriv->primaryOutput && pScrPriv->primaryOutput->crtc &&
pScrPriv->primaryOutput->pScreen == pScreen)
return pScrPriv->primaryOutput->crtc;
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 && crtc->mode)
return crtc;
}
}
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;
UpdateCurrentTimeIf();
return (*ProcRandrVector[stuff->data]) (client);
}
static int _X_COLD
SProcRRDispatch(ClientPtr client)
{
REQUEST(xReq);
if (stuff->data >= RRNumberRequests || !SProcRandrVector[stuff->data])
return BadRequest;
UpdateCurrentTimeIf();
return (*SProcRandrVector[stuff->data]) (client);
}
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