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TinyX/randr/rrcrtc.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.
*/
#include "randrstr.h"
#include "swaprep.h"
RESTYPE RRCrtcType;
/*
* Notify the CRTC of some change
*/
void
RRCrtcChanged(RRCrtcPtr crtc, Bool layoutChanged)
{
ScreenPtr pScreen = crtc->pScreen;
crtc->changed = TRUE;
if (pScreen) {
rrScrPriv(pScreen);
pScrPriv->changed = TRUE;
/*
* Send ConfigureNotify on any layout change
*/
if (layoutChanged)
pScrPriv->layoutChanged = TRUE;
}
}
/*
* Create a CRTC
*/
RRCrtcPtr
RRCrtcCreate(void *devPrivate)
{
RRCrtcPtr crtc;
if (!RRInit())
return NULL;
crtc = malloc(sizeof(RRCrtcRec));
if (!crtc)
return NULL;
crtc->id = FakeClientID(0);
crtc->pScreen = NULL;
crtc->mode = NULL;
crtc->x = 0;
crtc->y = 0;
crtc->rotation = RR_Rotate_0;
crtc->rotations = RR_Rotate_0;
crtc->outputs = NULL;
crtc->numOutputs = 0;
crtc->gammaSize = 0;
crtc->gammaRed = crtc->gammaBlue = crtc->gammaGreen = NULL;
crtc->changed = FALSE;
crtc->devPrivate = devPrivate;
if (!AddResource(crtc->id, RRCrtcType, (pointer) crtc))
return NULL;
return crtc;
}
/*
* Set the allowed rotations on a CRTC
*/
void
RRCrtcSetRotations(RRCrtcPtr crtc, Rotation rotations)
{
crtc->rotations = rotations;
}
/*
* Attach a Crtc to a screen. This is done as a separate step
* so that an xf86-based driver can create CRTCs in PreInit
* before the Screen has been created
*/
Bool
RRCrtcAttachScreen(RRCrtcPtr crtc, ScreenPtr pScreen)
{
rrScrPriv(pScreen);
RRCrtcPtr *crtcs;
/* make space for the crtc pointer */
if (pScrPriv->numCrtcs)
crtcs = realloc(pScrPriv->crtcs,
(pScrPriv->numCrtcs + 1) * sizeof(RRCrtcPtr));
else
crtcs = malloc(sizeof(RRCrtcPtr));
if (!crtcs)
return FALSE;
/* attach the screen and crtc together */
crtc->pScreen = pScreen;
pScrPriv->crtcs = crtcs;
pScrPriv->crtcs[pScrPriv->numCrtcs++] = crtc;
RRCrtcChanged(crtc, TRUE);
return TRUE;
}
/*
* Notify the extension that the Crtc has been reconfigured,
* the driver calls this whenever it has updated the mode
*/
Bool
RRCrtcNotify(RRCrtcPtr crtc,
RRModePtr mode,
int x,
int y, Rotation rotation, int numOutputs, RROutputPtr * outputs)
{
int i, j;
/*
* Check to see if any of the new outputs were
* not in the old list and mark them as changed
*/
for (i = 0; i < numOutputs; i++) {
for (j = 0; j < crtc->numOutputs; j++)
if (outputs[i] == crtc->outputs[j])
break;
if (j == crtc->numOutputs) {
RROutputChanged(outputs[i], FALSE);
RRCrtcChanged(crtc, FALSE);
}
}
/*
* Check to see if any of the old outputs are
* not in the new list and mark them as changed
*/
for (j = 0; j < crtc->numOutputs; j++) {
for (i = 0; i < numOutputs; i++)
if (outputs[i] == crtc->outputs[j])
break;
if (i == numOutputs) {
RROutputChanged(crtc->outputs[j], FALSE);
RRCrtcChanged(crtc, FALSE);
}
}
/*
* Reallocate the crtc output array if necessary
*/
if (numOutputs != crtc->numOutputs) {
RROutputPtr *newoutputs;
if (numOutputs) {
if (crtc->numOutputs)
newoutputs = realloc(crtc->outputs,
numOutputs * sizeof(RROutputPtr));
else
newoutputs = malloc(numOutputs * sizeof(RROutputPtr));
if (!newoutputs)
return FALSE;
}
else {
if (crtc->outputs)
free(crtc->outputs);
newoutputs = NULL;
}
crtc->outputs = newoutputs;
crtc->numOutputs = numOutputs;
}
/*
* Copy the new list of outputs into the crtc
*/
memcpy(crtc->outputs, outputs, numOutputs * sizeof(RROutputPtr));
/*
* Update remaining crtc fields
*/
if (mode != crtc->mode) {
if (crtc->mode)
RRModeDestroy(crtc->mode);
crtc->mode = mode;
if (mode != NULL)
mode->refcnt++;
RRCrtcChanged(crtc, TRUE);
}
if (x != crtc->x) {
crtc->x = x;
RRCrtcChanged(crtc, TRUE);
}
if (y != crtc->y) {
crtc->y = y;
RRCrtcChanged(crtc, TRUE);
}
if (rotation != crtc->rotation) {
crtc->rotation = rotation;
RRCrtcChanged(crtc, TRUE);
}
return TRUE;
}
void
RRDeliverCrtcEvent(ClientPtr client, WindowPtr pWin, RRCrtcPtr crtc)
{
ScreenPtr pScreen = pWin->drawable.pScreen;
rrScrPriv(pScreen);
xRRCrtcChangeNotifyEvent ce;
RRModePtr mode = crtc->mode;
ce.type = RRNotify + RREventBase;
ce.subCode = RRNotify_CrtcChange;
ce.timestamp = pScrPriv->lastSetTime.milliseconds;
ce.window = pWin->drawable.id;
ce.crtc = crtc->id;
ce.rotation = crtc->rotation;
if (mode) {
ce.mode = mode->mode.id;
ce.x = crtc->x;
ce.y = crtc->y;
ce.width = mode->mode.width;
ce.height = mode->mode.height;
}
else {
ce.mode = None;
ce.x = 0;
ce.y = 0;
ce.width = 0;
ce.height = 0;
}
WriteEventsToClient(client, 1, (xEvent *) &ce);
}
/*
* Request that the Crtc be reconfigured
*/
Bool
RRCrtcSet(RRCrtcPtr crtc,
RRModePtr mode,
int x,
int y, Rotation rotation, int numOutputs, RROutputPtr * outputs)
{
ScreenPtr pScreen = crtc->pScreen;
/* See if nothing changed */
if (crtc->mode == mode &&
crtc->x == x &&
crtc->y == y &&
crtc->rotation == rotation &&
crtc->numOutputs == numOutputs &&
!memcmp(crtc->outputs, outputs, numOutputs * sizeof(RROutputPtr))) {
return TRUE;
}
if (pScreen) {
#if RANDR_12_INTERFACE
rrScrPriv(pScreen);
if (pScrPriv->rrCrtcSet) {
return (*pScrPriv->rrCrtcSet) (pScreen, crtc, mode, x, y,
rotation, numOutputs, outputs);
}
#endif
#if RANDR_10_INTERFACE
if (pScrPriv->rrSetConfig) {
RRScreenSize size;
RRScreenRate rate;
if (!mode) {
RRCrtcNotify(crtc, NULL, x, y, rotation, 0, NULL);
return TRUE;
}
Bool ret;
size.width = mode->mode.width;
size.height = mode->mode.height;
if (outputs[0]->mmWidth && outputs[0]->mmHeight) {
size.mmWidth = outputs[0]->mmWidth;
size.mmHeight = outputs[0]->mmHeight;
}
else {
size.mmWidth = pScreen->mmWidth;
size.mmHeight = pScreen->mmHeight;
}
size.nRates = 1;
rate.rate = RRVerticalRefresh(&mode->mode);
size.pRates = &rate;
ret =
(*pScrPriv->rrSetConfig) (pScreen, rotation, rate.rate, &size);
/*
* Old 1.0 interface tied screen size to mode size
*/
if (ret) {
RRCrtcNotify(crtc, mode, x, y, rotation, 1, outputs);
RRScreenSizeNotify(pScreen);
}
return ret;
}
#endif
RRTellChanged(pScreen);
}
return FALSE;
}
/*
* Destroy a Crtc at shutdown
*/
void
RRCrtcDestroy(RRCrtcPtr crtc)
{
FreeResource(crtc->id, 0);
}
static int
RRCrtcDestroyResource(pointer value, XID pid)
{
RRCrtcPtr crtc = (RRCrtcPtr) value;
ScreenPtr pScreen = crtc->pScreen;
if (pScreen) {
rrScrPriv(pScreen);
int i;
for (i = 0; i < pScrPriv->numCrtcs; i++) {
if (pScrPriv->crtcs[i] == crtc) {
memmove(pScrPriv->crtcs + i, pScrPriv->crtcs + i + 1,
(pScrPriv->numCrtcs - (i + 1)) * sizeof(RRCrtcPtr));
--pScrPriv->numCrtcs;
break;
}
}
}
if (crtc->gammaRed)
free(crtc->gammaRed);
free(crtc);
return 1;
}
/*
* Request that the Crtc gamma be changed
*/
Bool
RRCrtcGammaSet(RRCrtcPtr crtc, CARD16 *red, CARD16 *green, CARD16 *blue)
{
Bool ret = TRUE;
#if RANDR_12_INTERFACE
ScreenPtr pScreen = crtc->pScreen;
#endif
memcpy(crtc->gammaRed, red, crtc->gammaSize * sizeof(CARD16));
memcpy(crtc->gammaGreen, green, crtc->gammaSize * sizeof(CARD16));
memcpy(crtc->gammaBlue, blue, crtc->gammaSize * sizeof(CARD16));
#if RANDR_12_INTERFACE
if (pScreen) {
rrScrPriv(pScreen);
if (pScrPriv->rrCrtcSetGamma)
ret = (*pScrPriv->rrCrtcSetGamma) (pScreen, crtc);
}
#endif
return ret;
}
/*
* Notify the extension that the Crtc gamma has been changed
* The driver calls this whenever it has changed the gamma values
* in the RRCrtcRec
*/
Bool
RRCrtcGammaNotify(RRCrtcPtr crtc)
{
return TRUE; /* not much going on here */
}
/**
* Returns the width/height that the crtc scans out from the framebuffer
*/
void
RRCrtcGetScanoutSize(RRCrtcPtr crtc, int *width, int *height)
{
if (crtc->mode == NULL) {
*width = 0;
*height = 0;
return;
}
switch (crtc->rotation & 0xf) {
case RR_Rotate_0:
case RR_Rotate_180:
*width = crtc->mode->mode.width;
*height = crtc->mode->mode.height;
break;
case RR_Rotate_90:
case RR_Rotate_270:
*width = crtc->mode->mode.height;
*height = crtc->mode->mode.width;
break;
}
}
/*
* Set the size of the gamma table at server startup time
*/
Bool
RRCrtcGammaSetSize(RRCrtcPtr crtc, int size)
{
CARD16 *gamma;
if (size == crtc->gammaSize)
return TRUE;
if (size) {
gamma = malloc(size * 3 * sizeof(CARD16));
if (!gamma)
return FALSE;
}
else
gamma = NULL;
if (crtc->gammaRed)
free(crtc->gammaRed);
crtc->gammaRed = gamma;
crtc->gammaGreen = gamma + size;
crtc->gammaBlue = gamma + size * 2;
crtc->gammaSize = size;
return TRUE;
}
/*
* Initialize crtc type
*/
Bool
RRCrtcInit(void)
{
RRCrtcType = CreateNewResourceType(RRCrtcDestroyResource);
if (!RRCrtcType)
return FALSE;
#ifdef XResExtension
RegisterResourceName(RRCrtcType, "CRTC");
#endif
return TRUE;
}
int
ProcRRGetCrtcInfo(ClientPtr client)
{
REQUEST(xRRGetCrtcInfoReq);;
xRRGetCrtcInfoReply rep;
RRCrtcPtr crtc;
CARD8 *extra;
unsigned long extraLen;
ScreenPtr pScreen;
rrScrPrivPtr pScrPriv;
RRModePtr mode;
RROutput *outputs;
RROutput *possible;
int i, j, k;
REQUEST_SIZE_MATCH(xRRGetCrtcInfoReq);
crtc = LookupCrtc(client, stuff->crtc, SecurityReadAccess);
if (!crtc)
return RRErrorBase + BadRRCrtc;
/* All crtcs must be associated with screens before client
* requests are processed
*/
pScreen = crtc->pScreen;
pScrPriv = rrGetScrPriv(pScreen);
mode = crtc->mode;
rep.type = X_Reply;
rep.status = RRSetConfigSuccess;
rep.sequenceNumber = client->sequence;
rep.length = 0;
rep.timestamp = pScrPriv->lastSetTime.milliseconds;
rep.x = crtc->x;
rep.y = crtc->y;
rep.width = mode ? mode->mode.width : 0;
rep.height = mode ? mode->mode.height : 0;
rep.mode = mode ? mode->mode.id : 0;
rep.rotation = crtc->rotation;
rep.rotations = crtc->rotations;
rep.nOutput = crtc->numOutputs;
k = 0;
for (i = 0; i < pScrPriv->numOutputs; i++)
for (j = 0; j < pScrPriv->outputs[i]->numCrtcs; j++)
if (pScrPriv->outputs[i]->crtcs[j] == crtc)
k++;
rep.nPossibleOutput = k;
rep.length = rep.nOutput + rep.nPossibleOutput;
extraLen = rep.length << 2;
if (extraLen) {
extra = malloc(extraLen);
if (!extra)
return BadAlloc;
}
else
extra = NULL;
outputs = (RROutput *) extra;
possible = (RROutput *) (outputs + rep.nOutput);
for (i = 0; i < crtc->numOutputs; i++) {
outputs[i] = crtc->outputs[i]->id;
if (client->swapped)
swapl(&outputs[i]);
}
k = 0;
for (i = 0; i < pScrPriv->numOutputs; i++)
for (j = 0; j < pScrPriv->outputs[i]->numCrtcs; j++)
if (pScrPriv->outputs[i]->crtcs[j] == crtc) {
possible[k] = pScrPriv->outputs[i]->id;
if (client->swapped)
swapl(&possible[k]);
k++;
}
if (client->swapped) {
swaps(&rep.sequenceNumber);
swapl(&rep.length);
swapl(&rep.timestamp);
swaps(&rep.x);
swaps(&rep.y);
swaps(&rep.width);
swaps(&rep.height);
swapl(&rep.mode);
swaps(&rep.rotation);
swaps(&rep.rotations);
swaps(&rep.nOutput);
swaps(&rep.nPossibleOutput);
}
WriteToClient(client, sizeof(xRRGetCrtcInfoReply), (char *) &rep);
if (extraLen) {
WriteToClient(client, extraLen, (char *) extra);
free(extra);
}
return client->noClientException;
}
int
ProcRRSetCrtcConfig(ClientPtr client)
{
REQUEST(xRRSetCrtcConfigReq);
xRRSetCrtcConfigReply rep;
ScreenPtr pScreen;
rrScrPrivPtr pScrPriv;
RRCrtcPtr crtc;
RRModePtr mode;
int numOutputs;
RROutputPtr *outputs = NULL;
RROutput *outputIds;
TimeStamp configTime;
TimeStamp time;
Rotation rotation;
int i, j;
REQUEST_AT_LEAST_SIZE(xRRSetCrtcConfigReq);
numOutputs = (stuff->length - (SIZEOF(xRRSetCrtcConfigReq) >> 2));
crtc = LookupIDByType(stuff->crtc, RRCrtcType);
if (!crtc) {
client->errorValue = stuff->crtc;
return RRErrorBase + BadRRCrtc;
}
if (stuff->mode == None) {
mode = NULL;
if (numOutputs > 0)
return BadMatch;
}
else {
mode = LookupIDByType(stuff->mode, RRModeType);
if (!mode) {
client->errorValue = stuff->mode;
return RRErrorBase + BadRRMode;
}
if (numOutputs == 0)
return BadMatch;
}
if (numOutputs) {
outputs = malloc(numOutputs * sizeof(RROutputPtr));
if (!outputs)
return BadAlloc;
}
else
outputs = NULL;
outputIds = (RROutput *) (stuff + 1);
for (i = 0; i < numOutputs; i++) {
outputs[i] = (RROutputPtr) LookupIDByType(outputIds[i], RROutputType);
if (!outputs[i]) {
client->errorValue = outputIds[i];
if (outputs)
free(outputs);
return RRErrorBase + BadRROutput;
}
/* validate crtc for this output */
for (j = 0; j < outputs[i]->numCrtcs; j++)
if (outputs[i]->crtcs[j] == crtc)
break;
if (j == outputs[i]->numCrtcs) {
if (outputs)
free(outputs);
return BadMatch;
}
/* validate mode for this output */
for (j = 0; j < outputs[i]->numModes; j++)
if (outputs[i]->modes[j] == mode)
break;
if (j == outputs[i]->numModes) {
if (outputs)
free(outputs);
return BadMatch;
}
}
pScreen = crtc->pScreen;
pScrPriv = rrGetScrPriv(pScreen);
time = ClientTimeToServerTime(stuff->timestamp);
configTime = ClientTimeToServerTime(stuff->configTimestamp);
if (!pScrPriv) {
rep.status = RRSetConfigFailed;
goto sendReply;
}
/*
* if the client's config timestamp is not the same as the last config
* timestamp, then the config information isn't up-to-date and
* can't even be validated
*/
if (CompareTimeStamps(configTime, pScrPriv->lastConfigTime) != 0) {
rep.status = RRSetConfigInvalidConfigTime;
goto sendReply;
}
/*
* Validate requested rotation
*/
rotation = (Rotation) stuff->rotation;
/* test the rotation bits only! */
switch (rotation & 0xf) {
case RR_Rotate_0:
case RR_Rotate_90:
case RR_Rotate_180:
case RR_Rotate_270:
break;
default:
/*
* Invalid rotation
*/
client->errorValue = stuff->rotation;
if (outputs)
free(outputs);
return BadValue;
}
if (mode) {
if ((~crtc->rotations) & rotation) {
/*
* requested rotation or reflection not supported by screen
*/
client->errorValue = stuff->rotation;
if (outputs)
free(outputs);
return BadMatch;
}
#ifdef RANDR_12_INTERFACE
/*
* Check screen size bounds if the DDX provides a 1.2 interface
* for setting screen size. Else, assume the CrtcSet sets
* the size along with the mode
*/
if (pScrPriv->rrScreenSetSize) {
int source_width = mode->mode.width;
int source_height = mode->mode.height;
if (rotation == RR_Rotate_90 || rotation == RR_Rotate_270) {
source_width = mode->mode.height;
source_height = mode->mode.width;
}
if (stuff->x + source_width > pScreen->width) {
client->errorValue = stuff->x;
if (outputs)
free(outputs);
return BadValue;
}
if (stuff->y + source_height > pScreen->height) {
client->errorValue = stuff->y;
if (outputs)
free(outputs);
return BadValue;
}
}
#endif
}
/*
* Make sure the requested set-time is not older than
* the last set-time
*/
if (CompareTimeStamps(time, pScrPriv->lastSetTime) < 0) {
rep.status = RRSetConfigInvalidTime;
goto sendReply;
}
if (!RRCrtcSet(crtc, mode, stuff->x, stuff->y,
rotation, numOutputs, outputs)) {
rep.status = RRSetConfigFailed;
goto sendReply;
}
rep.status = RRSetConfigSuccess;
sendReply:
if (outputs)
free(outputs);
rep.type = X_Reply;
/* rep.status has already been filled in */
rep.length = 0;
rep.sequenceNumber = client->sequence;
rep.newTimestamp = pScrPriv->lastConfigTime.milliseconds;
if (client->swapped) {
swaps(&rep.sequenceNumber);
swapl(&rep.length);
swapl(&rep.newTimestamp);
}
WriteToClient(client, sizeof(xRRSetCrtcConfigReply), (char *) &rep);
return client->noClientException;
}
int
ProcRRGetCrtcGammaSize(ClientPtr client)
{
REQUEST(xRRGetCrtcGammaSizeReq);
xRRGetCrtcGammaSizeReply reply;
RRCrtcPtr crtc;
REQUEST_SIZE_MATCH(xRRGetCrtcGammaSizeReq);
crtc = LookupCrtc(client, stuff->crtc, SecurityReadAccess);
if (!crtc)
return RRErrorBase + BadRRCrtc;
reply.type = X_Reply;
reply.sequenceNumber = client->sequence;
reply.length = 0;
reply.size = crtc->gammaSize;
if (client->swapped) {
swaps(&reply.sequenceNumber);
swapl(&reply.length);
swaps(&reply.size);
}
WriteToClient(client, sizeof(xRRGetCrtcGammaSizeReply), (char *) &reply);
return client->noClientException;
}
int
ProcRRGetCrtcGamma(ClientPtr client)
{
REQUEST(xRRGetCrtcGammaReq);
xRRGetCrtcGammaReply reply;
RRCrtcPtr crtc;
unsigned long len;
REQUEST_SIZE_MATCH(xRRGetCrtcGammaReq);
crtc = LookupCrtc(client, stuff->crtc, SecurityReadAccess);
if (!crtc)
return RRErrorBase + BadRRCrtc;
len = crtc->gammaSize * 3 * 2;
reply.type = X_Reply;
reply.sequenceNumber = client->sequence;
reply.length = (len + 3) >> 2;
reply.size = crtc->gammaSize;
if (client->swapped) {
swaps(&reply.sequenceNumber);
swapl(&reply.length);
swaps(&reply.size);
}
WriteToClient(client, sizeof(xRRGetCrtcGammaReply), (char *) &reply);
if (crtc->gammaSize) {
client->pSwapReplyFunc = (ReplySwapPtr) CopySwap16Write;
WriteSwappedDataToClient(client, len, (char *) crtc->gammaRed);
}
return client->noClientException;
}
int
ProcRRSetCrtcGamma(ClientPtr client)
{
REQUEST(xRRSetCrtcGammaReq);
RRCrtcPtr crtc;
unsigned long len;
CARD16 *red, *green, *blue;
REQUEST_AT_LEAST_SIZE(xRRSetCrtcGammaReq);
crtc = LookupCrtc(client, stuff->crtc, SecurityWriteAccess);
if (!crtc)
return RRErrorBase + BadRRCrtc;
len = client->req_len - (sizeof(xRRSetCrtcGammaReq) >> 2);
if (len < (stuff->size * 3 + 1) >> 1)
return BadLength;
if (stuff->size != crtc->gammaSize)
return BadMatch;
red = (CARD16 *) (stuff + 1);
green = red + crtc->gammaSize;
blue = green + crtc->gammaSize;
RRCrtcGammaSet(crtc, red, green, blue);
return Success;
}
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