unsigned int listAvailableModes(CGDirectDisplayID display, int displayNum) {
unsigned int returncode = 1;
int i;
CFArrayRef allModes = CGDisplayCopyAllDisplayModes(display, NULL);
if (allModes == NULL) {
returncode = 0;
}
#ifndef LIST_DEBUG
printf("Available Modes on Display %d\n", displayNum);
#endif
CGDisplayModeRef mode;
for (i = 0; i < CFArrayGetCount(allModes) && returncode; i++) {
mode = (CGDisplayModeRef) CFArrayGetValueAtIndex(allModes, i);
// This formatting is functional but it ought to be done less poorly.
#ifndef LIST_DEBUG
if (i % MODES_PER_LINE == 0) {
printf(" ");
} else {
printf("\t");
}
char modestr [50];
sprintf(modestr, "%lux%lux%lu@%.0f",
CGDisplayModeGetWidth(mode),
CGDisplayModeGetHeight(mode),
bitDepth(mode),
CGDisplayModeGetRefreshRate(mode));
printf("%-20s ", modestr);
if (i % MODES_PER_LINE == MODES_PER_LINE - 1) {
printf("\n");
}
#else
uint32_t ioflags = CGDisplayModeGetIOFlags(mode);
printf("display: %d %4lux%4lux%2lu@%.0f usable:%u ioflags:%4x valid:%u safe:%u default:%u",
displayNum,
CGDisplayModeGetWidth(mode),
CGDisplayModeGetHeight(mode),
bitDepth(mode),
CGDisplayModeGetRefreshRate(mode),
CGDisplayModeIsUsableForDesktopGUI(mode),
ioflags,
ioflags & kDisplayModeValidFlag ?1:0,
ioflags & kDisplayModeSafeFlag ?1:0,
ioflags & kDisplayModeDefaultFlag ?1:0 );
printf(" safety:%u alwaysshow:%u nevershow:%u notresize:%u requirepan:%u int:%u simul:%u",
ioflags & kDisplayModeSafetyFlags ?1:0,
ioflags & kDisplayModeAlwaysShowFlag ?1:0,
ioflags & kDisplayModeNeverShowFlag ?1:0,
ioflags & kDisplayModeNotResizeFlag ?1:0,
ioflags & kDisplayModeRequiresPanFlag ?1:0,
ioflags & kDisplayModeInterlacedFlag ?1:0,
ioflags & kDisplayModeSimulscanFlag ?1:0 );
printf(" builtin:%u notpreset:%u stretched:%u notgfxqual:%u valagnstdisp:%u tv:%u vldmirror:%u\n",
ioflags & kDisplayModeBuiltInFlag ?1:0,
ioflags & kDisplayModeNotPresetFlag ?1:0,
ioflags & kDisplayModeStretchedFlag ?1:0,
ioflags & kDisplayModeNotGraphicsQualityFlag ?1:0,
ioflags & kDisplayModeValidateAgainstDisplay ?1:0,
ioflags & kDisplayModeTelevisionFlag ?1:0,
ioflags & kDisplayModeValidForMirroringFlag ?1:0 );
#endif
}
CFRelease(allModes);
return returncode;
}
unsigned int listAvailableModes(CGDirectDisplayID display, int displayNum) {
unsigned int returncode = 1;
int numModes = 0;
int i;
CFArrayRef allModes = CGDisplayCopyAllDisplayModes(display, NULL);
if (allModes == NULL) {
returncode = 0;
}
numModes = CFArrayGetCount(allModes);
// sort the array of display modes
CFMutableArrayRef allModesSorted = CFArrayCreateMutableCopy(
kCFAllocatorDefault,
numModes,
allModes
);
CFArraySortValues(
allModesSorted,
CFRangeMake(0, CFArrayGetCount(allModesSorted)),
(CFComparatorFunction) _compareCFDisplayModes,
NULL
);
#ifndef LIST_DEBUG
if(displayNum != 0)
printf("\n\n");
printf("Available Modes on Display %d\n", displayNum);
#endif
CGDisplayModeRef mode;
int modesPerColumn = numModes / MODES_PER_LINE;
for (i = 0; (i < numModes) && returncode; i++) {
int rowNumber = (i / MODES_PER_LINE);
int idxDisplayMode = (i % MODES_PER_LINE) * modesPerColumn + rowNumber;
// if there are an even number of display modes to display,
// the last mode must have it's index decremented by 1
idxDisplayMode = MIN(idxDisplayMode, numModes - 1);
mode = (CGDisplayModeRef) CFArrayGetValueAtIndex(allModesSorted, idxDisplayMode);
// This formatting is functional but it ought to be done less poorly.
#ifndef LIST_DEBUG
if (i % MODES_PER_LINE == 0) {
printf(" ");
} else {
printf("\t");
}
char modestr [50];
sprintf(modestr, "%4lux%4lux%lu@%.0f",
CGDisplayModeGetWidth(mode),
CGDisplayModeGetHeight(mode),
bitDepth(mode),
CGDisplayModeGetRefreshRate(mode));
printf("%-20s ", modestr);
if(i % MODES_PER_LINE == MODES_PER_LINE - 1)
printf("\n");
#else
uint32_t ioflags = CGDisplayModeGetIOFlags(mode);
printf("display: %d %4lux%4lux%2lu@%.0f usable:%u ioflags:%4x valid:%u safe:%u default:%u",
displayNum,
CGDisplayModeGetWidth(mode),
CGDisplayModeGetHeight(mode),
bitDepth(mode),
CGDisplayModeGetRefreshRate(mode),
CGDisplayModeIsUsableForDesktopGUI(mode),
ioflags,
ioflags & kDisplayModeValidFlag ?1:0,
ioflags & kDisplayModeSafeFlag ?1:0,
ioflags & kDisplayModeDefaultFlag ?1:0 );
printf(" safety:%u alwaysshow:%u nevershow:%u notresize:%u requirepan:%u int:%u simul:%u",
ioflags & kDisplayModeSafetyFlags ?1:0,
ioflags & kDisplayModeAlwaysShowFlag ?1:0,
ioflags & kDisplayModeNeverShowFlag ?1:0,
ioflags & kDisplayModeNotResizeFlag ?1:0,
ioflags & kDisplayModeRequiresPanFlag ?1:0,
ioflags & kDisplayModeInterlacedFlag ?1:0,
ioflags & kDisplayModeSimulscanFlag ?1:0 );
printf(" builtin:%u notpreset:%u stretched:%u notgfxqual:%u valagnstdisp:%u tv:%u vldmirror:%u\n",
ioflags & kDisplayModeBuiltInFlag ?1:0,
ioflags & kDisplayModeNotPresetFlag ?1:0,
ioflags & kDisplayModeStretchedFlag ?1:0,
ioflags & kDisplayModeNotGraphicsQualityFlag ?1:0,
ioflags & kDisplayModeValidateAgainstDisplay ?1:0,
ioflags & kDisplayModeTelevisionFlag ?1:0,
ioflags & kDisplayModeValidForMirroringFlag ?1:0 );
#endif
}
CFRelease(allModes);
CFRelease(allModesSorted);
return returncode;
}
