fix: low-resolution screen sharing for safari 17. (#387)

* fix: low-resolution screen sharing for safari 17.

* update.

lib/src/support/platform.dart

@@ -36,6 +36,8 @@ bool lkPlatformIsTest() => Platform.environment.containsKey('FLUTTER_TEST');
 
 BrowserType lkBrowser() => lkBrowserImplementation();
 
+BrowserVersion lkBrowserVersion() => lkBrowserVersionImplementation();
+
 enum PlatformType {
   web,
   windows,
@@ -54,3 +56,16 @@ enum BrowserType {
   wkWebView,
   unknown,
 }
+
+class BrowserVersion {
+  const BrowserVersion(this.major, this.minor, this.patch);
+
+  /// The major version number: "1" in "1.2.3".
+  final int major;
+
+  /// The minor version number: "2" in "1.2.3".
+  final int minor;
+
+  /// The patch version number: "3" in "1.2.3".
+  final int patch;
+}

lib/src/support/platform/io.dart

@@ -39,3 +39,7 @@ bool lkE2EESupportedImplementation() {
 BrowserType lkBrowserImplementation() {
   return BrowserType.unknown;
 }
+
+BrowserVersion lkBrowserVersionImplementation() {
+  return const BrowserVersion(0, 0, 0);
+}

lib/src/support/platform/web.dart

@@ -41,3 +41,6 @@ BrowserType lkBrowserImplementation() {
   if (browser.isWKWebView) return BrowserType.wkWebView;
   return BrowserType.unknown;
 }
+
+BrowserVersion lkBrowserVersionImplementation() => BrowserVersion(
+    browser.version.major, browser.version.minor, browser.version.patch);

lib/src/track/local/local.dart

@@ -154,6 +154,13 @@ abstract class LocalTrack extends Track {
         if (options.selfBrowserSurface != null) {
           constraints['selfBrowserSurface'] = options.selfBrowserSurface!;
         }
+
+        // Remove resolution settings to fix low-resolution screen share on Safari 17.
+        // related bug: https://bugs.webkit.org/show_bug.cgi?id=263015
+        if (lkBrowser() == BrowserType.safari &&
+            lkBrowserVersion().major == 17) {
+          constraints['video'] = true;
+        }
       }
       stream = await rtc.navigator.mediaDevices.getDisplayMedia(constraints);
     } else {