ec77a95a02
xf86 drivers need to create RandR object in the PreInit stage, before the ScreenRec is allocated. Changing the RandR DIX code to permit this required the addition of functions that later associate the objects with the related screen. An additional change is that modes are now global, and no longer associated with a specific screen. This change actually makes mode management cleaner as there is no more per-screen list of modes to deal with. This changes the RandR 1.2 ABI/API for drivers.
219 lines
5.2 KiB
C
219 lines
5.2 KiB
C
/*
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* Copyright © 2006 Keith Packard
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that copyright
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* notice and this permission notice appear in supporting documentation, and
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* that the name of the copyright holders not be used in advertising or
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* publicity pertaining to distribution of the software without specific,
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* written prior permission. The copyright holders make no representations
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* about the suitability of this software for any purpose. It is provided "as
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* is" without express or implied warranty.
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*
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* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
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* OF THIS SOFTWARE.
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*/
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#include "randrstr.h"
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RESTYPE RRModeType;
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static Bool
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RRModeEqual (xRRModeInfo *a, xRRModeInfo *b)
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{
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if (a->width != b->width) return FALSE;
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if (a->height != b->height) return FALSE;
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if (a->dotClock != b->dotClock) return FALSE;
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if (a->hSyncStart != b->hSyncStart) return FALSE;
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if (a->hSyncEnd != b->hSyncEnd) return FALSE;
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if (a->hTotal != b->hTotal) return FALSE;
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if (a->hSkew != b->hSkew) return FALSE;
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if (a->vSyncStart != b->vSyncStart) return FALSE;
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if (a->vSyncEnd != b->vSyncEnd) return FALSE;
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if (a->vTotal != b->vTotal) return FALSE;
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if (a->nameLength != b->nameLength) return FALSE;
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if (a->modeFlags != b->modeFlags) return FALSE;
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return TRUE;
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}
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/*
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* Keep a list so it's easy to find modes in the resource database.
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*/
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static int num_modes;
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static RRModePtr *modes;
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RRModePtr
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RRModeGet (xRRModeInfo *modeInfo,
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const char *name)
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{
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int i;
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RRModePtr mode;
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RRModePtr *newModes;
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for (i = 0; i < num_modes; i++)
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{
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mode = modes[i];
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if (RRModeEqual (&mode->mode, modeInfo) &&
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!memcmp (name, mode->name, modeInfo->nameLength))
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{
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++mode->refcnt;
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return mode;
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}
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}
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mode = xalloc (sizeof (RRModeRec) + modeInfo->nameLength + 1);
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if (!mode)
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return NULL;
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mode->refcnt = 1;
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mode->mode = *modeInfo;
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mode->name = (char *) (mode + 1);
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memcpy (mode->name, name, modeInfo->nameLength);
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mode->name[modeInfo->nameLength] = '\0';
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mode->userDefined = FALSE;
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if (num_modes)
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newModes = xrealloc (modes, (num_modes + 1) * sizeof (RRModePtr));
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else
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newModes = xalloc (sizeof (RRModePtr));
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if (!newModes)
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{
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xfree (mode);
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return NULL;
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}
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mode->mode.id = FakeClientID(0);
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if (!AddResource (mode->mode.id, RRModeType, (pointer) mode))
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return NULL;
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modes = newModes;
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modes[num_modes++] = mode;
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/*
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* give the caller a reference to this mode
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*/
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++mode->refcnt;
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return mode;
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}
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RRModePtr *
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RRModesForScreen (ScreenPtr pScreen, int *num_ret)
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{
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rrScrPriv(pScreen);
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int o;
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RRModePtr *screen_modes;
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int num_screen_modes = 0;
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screen_modes = xalloc ((num_modes ? num_modes : 1) * sizeof (RRModePtr));
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for (o = 0; o < pScrPriv->numOutputs; o++)
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{
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RROutputPtr output = pScrPriv->outputs[o];
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int m, n;
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for (m = 0; m < output->numModes; m++)
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{
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RRModePtr mode = output->modes[m];
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for (n = 0; n < num_screen_modes; n++)
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if (screen_modes[n] == mode)
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break;
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if (n == num_screen_modes)
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screen_modes[num_screen_modes++] = mode;
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}
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}
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*num_ret = num_screen_modes;
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return screen_modes;
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}
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void
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RRModeDestroy (RRModePtr mode)
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{
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int m;
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if (--mode->refcnt > 0)
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return;
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for (m = 0; m < num_modes; m++)
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{
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if (modes[m] == mode)
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{
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memmove (modes + m, modes + m + 1,
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(num_modes - m - 1) * sizeof (RRModePtr));
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num_modes--;
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if (!num_modes)
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{
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xfree (modes);
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modes = NULL;
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}
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break;
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}
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}
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xfree (mode);
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}
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static int
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RRModeDestroyResource (pointer value, XID pid)
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{
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RRModeDestroy ((RRModePtr) value);
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return 1;
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}
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Bool
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RRModeInit (void)
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{
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assert (num_modes == 0);
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assert (modes == NULL);
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RRModeType = CreateNewResourceType (RRModeDestroyResource);
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if (!RRModeType)
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return FALSE;
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#ifdef XResExtension
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RegisterResourceName (RRModeType, "MODE");
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#endif
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return TRUE;
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}
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int
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ProcRRCreateMode (ClientPtr client)
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{
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REQUEST(xRRCreateModeReq);
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REQUEST_SIZE_MATCH(xRRCreateModeReq);
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(void) stuff;
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return BadImplementation;
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}
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int
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ProcRRDestroyMode (ClientPtr client)
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{
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REQUEST(xRRDestroyModeReq);
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REQUEST_SIZE_MATCH(xRRDestroyModeReq);
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(void) stuff;
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return BadImplementation;
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}
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int
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ProcRRAddOutputMode (ClientPtr client)
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{
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REQUEST(xRRAddOutputModeReq);
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REQUEST_SIZE_MATCH(xRRAddOutputModeReq);
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(void) stuff;
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return BadImplementation;
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}
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int
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ProcRRDeleteOutputMode (ClientPtr client)
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{
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REQUEST(xRRDeleteOutputModeReq);
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REQUEST_SIZE_MATCH(xRRDeleteOutputModeReq);
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(void) stuff;
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return BadImplementation;
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}
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