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Diffstat (limited to 'hw/xfree86/common/xf86Mode.c')
-rw-r--r--hw/xfree86/common/xf86Mode.c129
1 files changed, 111 insertions, 18 deletions
diff --git a/hw/xfree86/common/xf86Mode.c b/hw/xfree86/common/xf86Mode.c
index cd57e9916..6dccf2493 100644
--- a/hw/xfree86/common/xf86Mode.c
+++ b/hw/xfree86/common/xf86Mode.c
@@ -366,8 +366,9 @@ xf86HandleBuiltinMode(ScrnInfoPtr scrp,
return MODE_OK;
}
-static double
-ModeHSync(DisplayModePtr mode)
+/** Calculates the horizontal sync rate of a mode */
+_X_EXPORT double
+xf86ModeHSync(DisplayModePtr mode)
{
double hsync = 0.0;
@@ -379,8 +380,9 @@ ModeHSync(DisplayModePtr mode)
return hsync;
}
-static double
-ModeVRefresh(DisplayModePtr mode)
+/** Calculates the vertical refresh rate of a mode */
+_X_EXPORT double
+xf86ModeVRefresh(DisplayModePtr mode)
{
double refresh = 0.0;
@@ -398,6 +400,16 @@ ModeVRefresh(DisplayModePtr mode)
return refresh;
}
+/** Sets a default mode name of <width>x<height> on a mode. */
+_X_EXPORT void
+xf86SetModeDefaultName(DisplayModePtr mode)
+{
+ if (mode->name != NULL)
+ xfree(mode->name);
+
+ mode->name = XNFprintf("%dx%d", mode->HDisplay, mode->VDisplay);
+}
+
/*
* xf86LookupMode
*
@@ -522,7 +534,7 @@ xf86LookupMode(ScrnInfoPtr scrp, DisplayModePtr modep,
ModePrivFlags = cp->PrivFlags;
break;
}
- refresh = ModeVRefresh(p);
+ refresh = xf86ModeVRefresh(p);
if (p->Flags & V_INTERLACE)
refresh /= INTERLACE_REFRESH_WEIGHT;
if (refresh > bestRefresh) {
@@ -561,7 +573,7 @@ xf86LookupMode(ScrnInfoPtr scrp, DisplayModePtr modep,
found = TRUE;
if (strategy == LOOKUP_BEST_REFRESH) {
- refresh = ModeVRefresh(p);
+ refresh = xf86ModeVRefresh(p);
if (p->Flags & V_INTERLACE)
refresh /= INTERLACE_REFRESH_WEIGHT;
if (refresh > bestRefresh) {
@@ -662,7 +674,7 @@ xf86LookupMode(ScrnInfoPtr scrp, DisplayModePtr modep,
* Initialises the Crtc parameters for a mode. The initialisation includes
* adjustments for interlaced and double scan modes.
*/
-static void
+_X_EXPORT void
xf86SetModeCrtc(DisplayModePtr p, int adjustFlags)
{
if ((p == NULL) || ((p->type & M_T_CRTC_C) == M_T_BUILTIN))
@@ -744,6 +756,87 @@ xf86SetModeCrtc(DisplayModePtr p, int adjustFlags)
}
}
+/**
+ * Allocates and returns a copy of pMode, including pointers within pMode.
+ */
+_X_EXPORT DisplayModePtr
+xf86DuplicateMode(DisplayModePtr pMode)
+{
+ DisplayModePtr pNew;
+
+ pNew = xnfalloc(sizeof(DisplayModeRec));
+ *pNew = *pMode;
+ pNew->next = NULL;
+ pNew->prev = NULL;
+ if (pNew->name == NULL) {
+ xf86SetModeDefaultName(pMode);
+ } else {
+ pNew->name = xnfstrdup(pMode->name);
+ }
+
+ return pNew;
+}
+
+/**
+ * Duplicates every mode in the given list and returns a pointer to the first
+ * mode.
+ *
+ * \param modeList doubly-linked mode list
+ */
+_X_EXPORT DisplayModePtr
+xf86DuplicateModes(ScrnInfoPtr pScrn, DisplayModePtr modeList)
+{
+ DisplayModePtr first = NULL, last = NULL;
+ DisplayModePtr mode;
+
+ for (mode = modeList; mode != NULL; mode = mode->next) {
+ DisplayModePtr new;
+
+ new = xf86DuplicateMode(mode);
+
+ /* Insert pNew into modeList */
+ if (last) {
+ last->next = new;
+ new->prev = last;
+ } else {
+ first = new;
+ new->prev = NULL;
+ }
+ new->next = NULL;
+ last = new;
+ }
+
+ return first;
+}
+
+/**
+ * Returns true if the given modes should program to the same timings.
+ *
+ * This doesn't use Crtc values, as it might be used on ModeRecs without the
+ * Crtc values set. So, it's assumed that the other numbers are enough.
+ */
+_X_EXPORT Bool
+xf86ModesEqual(DisplayModePtr pMode1, DisplayModePtr pMode2)
+{
+ if (pMode1->Clock == pMode2->Clock &&
+ pMode1->HDisplay == pMode2->HDisplay &&
+ pMode1->HSyncStart == pMode2->HSyncStart &&
+ pMode1->HSyncEnd == pMode2->HSyncEnd &&
+ pMode1->HTotal == pMode2->HTotal &&
+ pMode1->HSkew == pMode2->HSkew &&
+ pMode1->VDisplay == pMode2->VDisplay &&
+ pMode1->VSyncStart == pMode2->VSyncStart &&
+ pMode1->VSyncEnd == pMode2->VSyncEnd &&
+ pMode1->VTotal == pMode2->VTotal &&
+ pMode1->VScan == pMode2->VScan &&
+ pMode1->Flags == pMode2->Flags)
+ {
+ return TRUE;
+ } else {
+ return FALSE;
+ }
+}
+
/*
* xf86CheckModeForMonitor
*
@@ -802,7 +895,7 @@ xf86CheckModeForMonitor(DisplayModePtr mode, MonPtr monitor)
if (monitor->nHsync > 0) {
/* Check hsync against the allowed ranges */
- float hsync = ModeHSync(mode);
+ float hsync = xf86ModeHSync(mode);
for (i = 0; i < monitor->nHsync; i++)
if ((hsync > monitor->hsync[i].lo * (1.0 - SYNC_TOLERANCE)) &&
(hsync < monitor->hsync[i].hi * (1.0 + SYNC_TOLERANCE)))
@@ -815,7 +908,7 @@ xf86CheckModeForMonitor(DisplayModePtr mode, MonPtr monitor)
if (monitor->nVrefresh > 0) {
/* Check vrefresh against the allowed ranges */
- float vrefrsh = ModeVRefresh(mode);
+ float vrefrsh = xf86ModeVRefresh(mode);
for (i = 0; i < monitor->nVrefresh; i++)
if ((vrefrsh > monitor->vrefresh[i].lo * (1.0 - SYNC_TOLERANCE)) &&
(vrefrsh < monitor->vrefresh[i].hi * (1.0 + SYNC_TOLERANCE)))
@@ -1043,8 +1136,8 @@ xf86InitialCheckModeForDriver(ScrnInfoPtr scrp, DisplayModePtr mode,
/ (mode->CrtcHTotal * mode->CrtcVTotal);
}
- mode->HSync = ModeHSync(mode);
- mode->VRefresh = ModeVRefresh(mode);
+ mode->HSync = xf86ModeHSync(mode);
+ mode->VRefresh = xf86ModeVRefresh(mode);
/* Assume it is OK */
return MODE_OK;
@@ -1683,7 +1776,7 @@ xf86ValidateModes(ScrnInfoPtr scrp, DisplayModePtr availModes,
"TargetRefresh", 0.0);
if (targetRefresh > 0.0) {
for (p = scrp->modePool; p != NULL; p = p->next) {
- if (ModeVRefresh(p) > targetRefresh * (1.0 - SYNC_TOLERANCE))
+ if (xf86ModeVRefresh(p) > targetRefresh * (1.0 - SYNC_TOLERANCE))
break;
}
if (!p)
@@ -1772,7 +1865,7 @@ xf86ValidateModes(ScrnInfoPtr scrp, DisplayModePtr availModes,
* If there is a target refresh rate, skip modes that
* don't match up.
*/
- if (ModeVRefresh(q) <
+ if (xf86ModeVRefresh(q) <
(1.0 - SYNC_TOLERANCE) * targetRefresh)
continue;
@@ -2068,8 +2161,8 @@ add(char **p, char *new)
strcat(*p, new);
}
-static void
-PrintModeline(int scrnIndex,DisplayModePtr mode)
+_X_EXPORT void
+xf86PrintModeline(int scrnIndex,DisplayModePtr mode)
{
char tmp[256];
char *flags = xnfcalloc(1, 1);
@@ -2124,8 +2217,8 @@ xf86PrintModes(ScrnInfoPtr scrp)
do {
desc = desc2 = "";
- hsync = ModeHSync(p);
- refresh = ModeVRefresh(p);
+ hsync = xf86ModeHSync(p);
+ refresh = xf86ModeVRefresh(p);
if (p->Flags & V_INTERLACE) {
desc = " (I)";
}
@@ -2166,7 +2259,7 @@ xf86PrintModes(ScrnInfoPtr scrp)
p->SynthClock / 1000.0, hsync, refresh, desc, desc2);
}
if (hsync != 0 && refresh != 0)
- PrintModeline(scrp->scrnIndex,p);
+ xf86PrintModeline(scrp->scrnIndex,p);
p = p->next;
} while (p != NULL && p != scrp->modes);
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-18 04:48:14 +0000