Display (Windows): adds VRR status detection support

Author: CarterLi

src/detection/displayserver/displayserver.c

@@ -45,6 +45,7 @@ FFDisplayResult* ffdsAppendDisplay(
     display->manufactureYear = 0;
     display->manufactureWeek = 0;
     display->serial = 0;
+    display->vrrStatus = FF_DISPLAY_VRR_STATUS_UNKNOWN;
 
     return display;
 }

src/detection/displayserver/displayserver.h

@@ -60,6 +60,13 @@ typedef enum __attribute__((__packed__)) FFDisplayHdrStatus
     FF_DISPLAY_HDR_STATUS_ENABLED,
 } FFDisplayHdrStatus;
 
+typedef enum __attribute__((__packed__)) FFDisplayVrrStatus
+{
+    FF_DISPLAY_VRR_STATUS_UNKNOWN,
+    FF_DISPLAY_VRR_STATUS_DISABLED,
+    FF_DISPLAY_VRR_STATUS_ENABLED,
+} FFDisplayVrrStatus;
+
 typedef struct FFDisplayResult
 {
     uint32_t width; // in px
@@ -83,6 +90,7 @@ typedef struct FFDisplayResult
     uint16_t manufactureYear;
     uint16_t manufactureWeek;
     uint32_t serial;
+    FFDisplayVrrStatus vrrStatus;
 } FFDisplayResult;
 
 typedef struct FFDisplayServerResult

src/detection/displayserver/displayserver_windows.c

@@ -229,6 +229,7 @@ static void detectDisplays(FFDisplayServerResult* ds)
                 }
                 if (edidLength > 0)
                     ffEdidGetSerialAndManufactureDate(edidData, &display->serial, &display->manufactureYear, &display->manufactureWeek);
+                display->vrrStatus = path->flags & DISPLAYCONFIG_PATH_BOOST_REFRESH_RATE ? FF_DISPLAY_VRR_STATUS_ENABLED : FF_DISPLAY_VRR_STATUS_DISABLED;
             }
         }
     }

src/modules/display/display.c

@@ -348,6 +348,21 @@ bool ffGenerateDisplayJsonResult(FF_MAYBE_UNUSED FFDisplayOptions* options, yyjs
         yyjson_mut_obj_add_uint(doc, output, "height", item->height);
         yyjson_mut_obj_add_real(doc, output, "refreshRate", item->refreshRate);
 
+        if (item->vrrStatus == FF_DISPLAY_VRR_STATUS_UNKNOWN)
+            yyjson_mut_obj_add_null(doc, output, "vrrStatus");
+        else switch (item->vrrStatus)
+        {
+            case FF_DISPLAY_VRR_STATUS_DISABLED:
+                yyjson_mut_obj_add_str(doc, output, "vrrStatus", "Disabled");
+                break;
+            case FF_DISPLAY_VRR_STATUS_ENABLED:
+                yyjson_mut_obj_add_str(doc, output, "vrrStatus", "Enabled");
+                break;
+            default:
+                yyjson_mut_obj_add_str(doc, output, "vrrStatus", "Unknown");
+                break;
+        }
+
         yyjson_mut_val* scaled = yyjson_mut_obj_add_obj(doc, obj, "scaled");
         yyjson_mut_obj_add_uint(doc, scaled, "width", item->scaledWidth);
         yyjson_mut_obj_add_uint(doc, scaled, "height", item->scaledHeight);