diff options
Diffstat (limited to 'xorg-server/randr/rrmode.c')
| -rw-r--r-- | xorg-server/randr/rrmode.c | 763 |
1 files changed, 381 insertions, 382 deletions
diff --git a/xorg-server/randr/rrmode.c b/xorg-server/randr/rrmode.c index ae7939909..63a2d2a74 100644 --- a/xorg-server/randr/rrmode.c +++ b/xorg-server/randr/rrmode.c @@ -1,382 +1,381 @@ -/*
- * 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 = realloc(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, (pointer) mode))
- 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 = malloc((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 m, 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 (pointer 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 = {0};
- WindowPtr pWin;
- ScreenPtr pScreen;
- rrScrPrivPtr pScrPriv;
- 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;
- pScrPriv = rrGetScrPriv(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.type = X_Reply;
- rep.pad0 = 0;
- rep.sequenceNumber = client->sequence;
- rep.length = 0;
- rep.mode = mode->mode.id;
- if (client->swapped)
- {
- int n;
- swaps(&rep.sequenceNumber, n);
- swapl(&rep.length, n);
- swapl(&rep.mode, n);
- }
- WriteToClient(client, sizeof(xRRCreateModeReply), (char *)&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);
-}
+/* + * 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 = realloc(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, (pointer) mode)) + 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 = malloc((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 m, 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 (pointer 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 = {0}; + WindowPtr pWin; + ScreenPtr pScreen; + rrScrPrivPtr pScrPriv; + 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; + pScrPriv = rrGetScrPriv(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.type = X_Reply; + rep.pad0 = 0; + rep.sequenceNumber = client->sequence; + rep.length = 0; + rep.mode = mode->mode.id; + if (client->swapped) + { + swaps(&rep.sequenceNumber); + swapl(&rep.length); + swapl(&rep.mode); + } + WriteToClient(client, sizeof(xRRCreateModeReply), (char *)&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); +} |