DisplayServer: don't use private API (macOS)

src/detection/displayserver/displayserver_apple.c

@@ -4,53 +4,31 @@
 #include <stdlib.h>
 #include <ctype.h>
 #include <string.h>
-#include <ApplicationServices/ApplicationServices.h>
-
-//Resolution code heavily inspired by displayplacer <3
-
-typedef union
-{
-    uint8_t rawData[0xDC];
-    struct
-    {
-        uint32_t mode;
-        uint32_t flags;		// 0x4
-        uint32_t width;		// 0x8
-        uint32_t height;	// 0xC
-        uint32_t depth;		// 0x10
-        uint32_t dc2[42];
-        uint16_t dc3;
-        uint16_t freq;		// 0xBC
-        uint32_t dc4[4];
-        float density;		// 0xD0
-    } derived;
-} modes_D4;
-
-void CGSGetCurrentDisplayMode(CGDirectDisplayID display, int* modeNum);
-void CGSGetDisplayModeDescriptionOfLength(CGDirectDisplayID display, int idx, modes_D4* mode, int length);
+#include <assert.h>
+#include <CoreGraphics/CGDirectDisplay.h>
 
 static void detectResolution(FFDisplayServerResult* ds)
 {
-    CGDisplayCount screenCount;
-    CGGetOnlineDisplayList(INT_MAX, NULL, &screenCount);
-    if(screenCount == 0)
+    CGDirectDisplayID screens[128];
+    uint32_t screenCount;
+    if(CGGetOnlineDisplayList(sizeof(screens) / sizeof(screens[0]), screens, &screenCount) != kCGErrorSuccess)
         return;
 
-    CGDirectDisplayID* screens = malloc(screenCount * sizeof(CGDirectDisplayID));
-    CGGetOnlineDisplayList(INT_MAX, screens, &screenCount);
-
     for(uint32_t i = 0; i < screenCount; i++)
     {
-        int modeID;
-        CGSGetCurrentDisplayMode(screens[i], &modeID);
-        modes_D4 mode;
-        CGSGetDisplayModeDescriptionOfLength(screens[i], modeID, &mode, 0xD4);
-
-        uint32_t refreshRate = ffdsParseRefreshRate(mode.derived.freq);
-        ffdsAppendResolution(ds, mode.derived.width, mode.derived.height, refreshRate);
+        CGDirectDisplayID screen = screens[i];
+        CGDisplayModeRef mode = CGDisplayCopyDisplayMode(screen);
+        if(mode)
+        {
+            ffdsAppendResolution(ds,
+                (uint32_t)CGDisplayModeGetWidth(mode),
+                (uint32_t)CGDisplayModeGetHeight(mode),
+                (uint32_t)CGDisplayModeGetRefreshRate(mode)
+            );
+            CGDisplayModeRelease(mode);
+        }
+        CGDisplayRelease(screen);
     }
-
-    free(screens);
 }
 
 static void detectWM(FFDisplayServerResult* ds)