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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"
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;
RRModePtr
RRModeGet (xRRModeInfo *modeInfo,
const char *name)
{
int i;
RRModePtr mode;
RRModePtr *newModes;
for (i = 0; i < num_modes; i++)
{
mode = modes[i];
if (RRModeEqual (&mode->mode, modeInfo) &&
!memcmp (name, mode->name, modeInfo->nameLength))
{
++mode->refcnt;
return mode;
}
}
if (!RRInit ())
return NULL;
mode = xalloc (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->userDefined = FALSE;
if (num_modes)
newModes = xrealloc (modes, (num_modes + 1) * sizeof (RRModePtr));
else
newModes = xalloc (sizeof (RRModePtr));
if (!newModes)
{
xfree (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;
}
RRModePtr *
RRModesForScreen (ScreenPtr pScreen, int *num_ret)
{
rrScrPriv(pScreen);
int o, c;
RRModePtr *screen_modes;
int num_screen_modes = 0;
screen_modes = xalloc ((num_modes ? num_modes : 1) * sizeof (RRModePtr));
/*
* 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; m++)
{
RRModePtr mode = output->modes[m];
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;
}
*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)
{
xfree (modes);
modes = NULL;
}
break;
}
}
xfree (mode);
}
static int
RRModeDestroyResource (pointer value, XID pid)
{
RRModeDestroy ((RRModePtr) value);
return 1;
}
Bool
RRModeInit (void)
{
assert (num_modes == 0);
assert (modes == NULL);
RRModeType = CreateNewResourceType (RRModeDestroyResource);
if (!RRModeType)
return FALSE;
#ifdef XResExtension
RegisterResourceName (RRModeType, "MODE");
#endif
return TRUE;
}
int
ProcRRCreateMode (ClientPtr client)
{
REQUEST(xRRCreateModeReq);
REQUEST_SIZE_MATCH(xRRCreateModeReq);
(void) stuff;
return BadImplementation;
}
int
ProcRRDestroyMode (ClientPtr client)
{
REQUEST(xRRDestroyModeReq);
REQUEST_SIZE_MATCH(xRRDestroyModeReq);
(void) stuff;
return BadImplementation;
}
int
ProcRRAddOutputMode (ClientPtr client)
{
REQUEST(xRRAddOutputModeReq);
REQUEST_SIZE_MATCH(xRRAddOutputModeReq);
(void) stuff;
return BadImplementation;
}
int
ProcRRDeleteOutputMode (ClientPtr client)
{
REQUEST(xRRDeleteOutputModeReq);
REQUEST_SIZE_MATCH(xRRDeleteOutputModeReq);
(void) stuff;
return BadImplementation;
}
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