376 lines
9.3 KiB
C
376 lines
9.3 KiB
C
/*
|
|
* 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"
|
|
|
|
RESTYPE RRModeType;
|
|
|
|
static Bool
|
|
RRModeEqual(xRRModeInfo * a, xRRModeInfo * b)
|
|
{
|
|
if (a->width != b->width)
|
|
return FALSE;
|
|
if (a->height != b->height)
|
|
return FALSE;
|
|
if (a->dotClock != b->dotClock)
|
|
return FALSE;
|
|
if (a->hSyncStart != b->hSyncStart)
|
|
return FALSE;
|
|
if (a->hSyncEnd != b->hSyncEnd)
|
|
return FALSE;
|
|
if (a->hTotal != b->hTotal)
|
|
return FALSE;
|
|
if (a->hSkew != b->hSkew)
|
|
return FALSE;
|
|
if (a->vSyncStart != b->vSyncStart)
|
|
return FALSE;
|
|
if (a->vSyncEnd != b->vSyncEnd)
|
|
return FALSE;
|
|
if (a->vTotal != b->vTotal)
|
|
return FALSE;
|
|
if (a->nameLength != b->nameLength)
|
|
return FALSE;
|
|
if (a->modeFlags != b->modeFlags)
|
|
return FALSE;
|
|
return TRUE;
|
|
}
|
|
|
|
/*
|
|
* Keep a list so it's easy to find modes in the resource database.
|
|
*/
|
|
static int num_modes;
|
|
static RRModePtr *modes;
|
|
|
|
static RRModePtr
|
|
RRModeCreate(xRRModeInfo * modeInfo, const char *name, ScreenPtr userScreen)
|
|
{
|
|
RRModePtr mode, *newModes;
|
|
|
|
if (!RRInit())
|
|
return NULL;
|
|
|
|
mode = malloc(sizeof(RRModeRec) + modeInfo->nameLength + 1);
|
|
if (!mode)
|
|
return NULL;
|
|
mode->refcnt = 1;
|
|
mode->mode = *modeInfo;
|
|
mode->name = (char *) (mode + 1);
|
|
memcpy(mode->name, name, modeInfo->nameLength);
|
|
mode->name[modeInfo->nameLength] = '\0';
|
|
mode->userScreen = userScreen;
|
|
|
|
if (num_modes)
|
|
newModes = reallocarray(modes, num_modes + 1, sizeof(RRModePtr));
|
|
else
|
|
newModes = malloc(sizeof(RRModePtr));
|
|
|
|
if (!newModes) {
|
|
free(mode);
|
|
return NULL;
|
|
}
|
|
|
|
mode->mode.id = FakeClientID(0);
|
|
if (!AddResource(mode->mode.id, RRModeType, (void *) mode)) {
|
|
free(newModes);
|
|
return NULL;
|
|
}
|
|
modes = newModes;
|
|
modes[num_modes++] = mode;
|
|
|
|
/*
|
|
* give the caller a reference to this mode
|
|
*/
|
|
++mode->refcnt;
|
|
return mode;
|
|
}
|
|
|
|
static RRModePtr
|
|
RRModeFindByName(const char *name, CARD16 nameLength)
|
|
{
|
|
int i;
|
|
RRModePtr mode;
|
|
|
|
for (i = 0; i < num_modes; i++) {
|
|
mode = modes[i];
|
|
if (mode->mode.nameLength == nameLength &&
|
|
!memcmp(name, mode->name, nameLength)) {
|
|
return mode;
|
|
}
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
RRModePtr
|
|
RRModeGet(xRRModeInfo * modeInfo, const char *name)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < num_modes; i++) {
|
|
RRModePtr mode = modes[i];
|
|
|
|
if (RRModeEqual(&mode->mode, modeInfo) &&
|
|
!memcmp(name, mode->name, modeInfo->nameLength)) {
|
|
++mode->refcnt;
|
|
return mode;
|
|
}
|
|
}
|
|
|
|
return RRModeCreate(modeInfo, name, NULL);
|
|
}
|
|
|
|
static RRModePtr
|
|
RRModeCreateUser(ScreenPtr pScreen,
|
|
xRRModeInfo * modeInfo, const char *name, int *error)
|
|
{
|
|
RRModePtr mode;
|
|
|
|
mode = RRModeFindByName(name, modeInfo->nameLength);
|
|
if (mode) {
|
|
*error = BadName;
|
|
return NULL;
|
|
}
|
|
|
|
mode = RRModeCreate(modeInfo, name, pScreen);
|
|
if (!mode) {
|
|
*error = BadAlloc;
|
|
return NULL;
|
|
}
|
|
*error = Success;
|
|
return mode;
|
|
}
|
|
|
|
RRModePtr *
|
|
RRModesForScreen(ScreenPtr pScreen, int *num_ret)
|
|
{
|
|
rrScrPriv(pScreen);
|
|
int o, c, m;
|
|
RRModePtr *screen_modes;
|
|
int num_screen_modes = 0;
|
|
|
|
screen_modes = xallocarray((num_modes ? num_modes : 1), sizeof(RRModePtr));
|
|
if (!screen_modes)
|
|
return NULL;
|
|
|
|
/*
|
|
* Add modes from all outputs
|
|
*/
|
|
for (o = 0; o < pScrPriv->numOutputs; o++) {
|
|
RROutputPtr output = pScrPriv->outputs[o];
|
|
int n;
|
|
|
|
for (m = 0; m < output->numModes + output->numUserModes; m++) {
|
|
RRModePtr mode = (m < output->numModes ?
|
|
output->modes[m] :
|
|
output->userModes[m - output->numModes]);
|
|
for (n = 0; n < num_screen_modes; n++)
|
|
if (screen_modes[n] == mode)
|
|
break;
|
|
if (n == num_screen_modes)
|
|
screen_modes[num_screen_modes++] = mode;
|
|
}
|
|
}
|
|
/*
|
|
* Add modes from all crtcs. The goal is to
|
|
* make sure all available and active modes
|
|
* are visible to the client
|
|
*/
|
|
for (c = 0; c < pScrPriv->numCrtcs; c++) {
|
|
RRCrtcPtr crtc = pScrPriv->crtcs[c];
|
|
RRModePtr mode = crtc->mode;
|
|
int n;
|
|
|
|
if (!mode)
|
|
continue;
|
|
for (n = 0; n < num_screen_modes; n++)
|
|
if (screen_modes[n] == mode)
|
|
break;
|
|
if (n == num_screen_modes)
|
|
screen_modes[num_screen_modes++] = mode;
|
|
}
|
|
/*
|
|
* Add all user modes for this screen
|
|
*/
|
|
for (m = 0; m < num_modes; m++) {
|
|
RRModePtr mode = modes[m];
|
|
int n;
|
|
|
|
if (mode->userScreen != pScreen)
|
|
continue;
|
|
for (n = 0; n < num_screen_modes; n++)
|
|
if (screen_modes[n] == mode)
|
|
break;
|
|
if (n == num_screen_modes)
|
|
screen_modes[num_screen_modes++] = mode;
|
|
}
|
|
|
|
*num_ret = num_screen_modes;
|
|
return screen_modes;
|
|
}
|
|
|
|
void
|
|
RRModeDestroy(RRModePtr mode)
|
|
{
|
|
int m;
|
|
|
|
if (--mode->refcnt > 0)
|
|
return;
|
|
for (m = 0; m < num_modes; m++) {
|
|
if (modes[m] == mode) {
|
|
memmove(modes + m, modes + m + 1,
|
|
(num_modes - m - 1) * sizeof(RRModePtr));
|
|
num_modes--;
|
|
if (!num_modes) {
|
|
free(modes);
|
|
modes = NULL;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
free(mode);
|
|
}
|
|
|
|
static int
|
|
RRModeDestroyResource(void *value, XID pid)
|
|
{
|
|
RRModeDestroy((RRModePtr) value);
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Initialize mode type
|
|
*/
|
|
Bool
|
|
RRModeInit(void)
|
|
{
|
|
assert(num_modes == 0);
|
|
assert(modes == NULL);
|
|
RRModeType = CreateNewResourceType(RRModeDestroyResource, "MODE");
|
|
if (!RRModeType)
|
|
return FALSE;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/*
|
|
* Initialize mode type error value
|
|
*/
|
|
void
|
|
RRModeInitErrorValue(void)
|
|
{
|
|
SetResourceTypeErrorValue(RRModeType, RRErrorBase + BadRRMode);
|
|
}
|
|
|
|
int
|
|
ProcRRCreateMode(ClientPtr client)
|
|
{
|
|
REQUEST(xRRCreateModeReq);
|
|
xRRCreateModeReply rep;
|
|
WindowPtr pWin;
|
|
ScreenPtr pScreen;
|
|
xRRModeInfo *modeInfo;
|
|
long units_after;
|
|
char *name;
|
|
int error, rc;
|
|
RRModePtr mode;
|
|
|
|
REQUEST_AT_LEAST_SIZE(xRRCreateModeReq);
|
|
rc = dixLookupWindow(&pWin, stuff->window, client, DixGetAttrAccess);
|
|
if (rc != Success)
|
|
return rc;
|
|
|
|
pScreen = pWin->drawable.pScreen;
|
|
|
|
modeInfo = &stuff->modeInfo;
|
|
name = (char *) (stuff + 1);
|
|
units_after = (stuff->length - bytes_to_int32(sizeof(xRRCreateModeReq)));
|
|
|
|
/* check to make sure requested name fits within the data provided */
|
|
if (bytes_to_int32(modeInfo->nameLength) > units_after)
|
|
return BadLength;
|
|
|
|
mode = RRModeCreateUser(pScreen, modeInfo, name, &error);
|
|
if (!mode)
|
|
return error;
|
|
|
|
rep = (xRRCreateModeReply) {
|
|
.type = X_Reply,
|
|
.sequenceNumber = client->sequence,
|
|
.length = 0,
|
|
.mode = mode->mode.id
|
|
};
|
|
if (client->swapped) {
|
|
swaps(&rep.sequenceNumber);
|
|
swapl(&rep.length);
|
|
swapl(&rep.mode);
|
|
}
|
|
WriteToClient(client, sizeof(xRRCreateModeReply), &rep);
|
|
/* Drop out reference to this mode */
|
|
RRModeDestroy(mode);
|
|
return Success;
|
|
}
|
|
|
|
int
|
|
ProcRRDestroyMode(ClientPtr client)
|
|
{
|
|
REQUEST(xRRDestroyModeReq);
|
|
RRModePtr mode;
|
|
|
|
REQUEST_SIZE_MATCH(xRRDestroyModeReq);
|
|
VERIFY_RR_MODE(stuff->mode, mode, DixDestroyAccess);
|
|
|
|
if (!mode->userScreen)
|
|
return BadMatch;
|
|
if (mode->refcnt > 1)
|
|
return BadAccess;
|
|
FreeResource(stuff->mode, 0);
|
|
return Success;
|
|
}
|
|
|
|
int
|
|
ProcRRAddOutputMode(ClientPtr client)
|
|
{
|
|
REQUEST(xRRAddOutputModeReq);
|
|
RRModePtr mode;
|
|
RROutputPtr output;
|
|
|
|
REQUEST_SIZE_MATCH(xRRAddOutputModeReq);
|
|
VERIFY_RR_OUTPUT(stuff->output, output, DixReadAccess);
|
|
VERIFY_RR_MODE(stuff->mode, mode, DixUseAccess);
|
|
|
|
return RROutputAddUserMode(output, mode);
|
|
}
|
|
|
|
int
|
|
ProcRRDeleteOutputMode(ClientPtr client)
|
|
{
|
|
REQUEST(xRRDeleteOutputModeReq);
|
|
RRModePtr mode;
|
|
RROutputPtr output;
|
|
|
|
REQUEST_SIZE_MATCH(xRRDeleteOutputModeReq);
|
|
VERIFY_RR_OUTPUT(stuff->output, output, DixReadAccess);
|
|
VERIFY_RR_MODE(stuff->mode, mode, DixUseAccess);
|
|
|
|
return RROutputDeleteUserMode(output, mode);
|
|
}
|