fix(theme): unlock unmuted media autoplay without user interaction on macos

src-tauri/src/commands.rs

@@ -3055,6 +3055,7 @@ pub async fn reveal_window(window: tauri::WebviewWindow) -> Result<(), String> {
             #[cfg(target_os = "macos")]
             {
                 let res = crate::macos::activate_and_focus_window(&win);
+                let _ = crate::macos::unlock_media_autoplay(&win);
                 let _ = tx.send(res);
             }
 
@@ -3066,3 +3067,16 @@ pub async fn reveal_window(window: tauri::WebviewWindow) -> Result<(), String> {
     rx.await
         .map_err(|_| "Main thread channel closed".to_string())?
 }
+
+#[tauri::command]
+pub async fn unlock_media_autoplay(window: tauri::WebviewWindow) -> Result<(), String> {
+    #[cfg(target_os = "macos")]
+    {
+        crate::macos::unlock_media_autoplay(&window)?;
+    }
+    #[cfg(not(target_os = "macos"))]
+    {
+        let _ = window;
+    }
+    Ok(())
+}

src-tauri/src/lib.rs

@@ -33,7 +33,7 @@ use crate::{
         resolve_osu_folder, restore_theme_backup, reveal_window, run_open_tablet_driver, run_osu, run_osu_updater,
         save_theme_project, set_logging_enabled, set_osu_config_values, set_osu_user_config_values,
         stop_open_tablet_driver, theme_asset_base, theme_editor_context, theme_preview_url,
-        valid_osu_folder,
+        unlock_media_autoplay, valid_osu_folder,
     },
     state::AppState,
 };
@@ -136,6 +136,9 @@ pub fn run() {
                 if let Err(error) = macos::allow_media_autoplay(&window) {
                     log::warn!(target: "launcher", "{error}");
                 }
+                if let Err(error) = macos::unlock_media_autoplay(&window) {
+                    log::warn!(target: "launcher", "{error}");
+                }
                 if let Err(error) = macos::activate_and_focus_window(&window) {
                     log::warn!(target: "launcher", "Could not focus launcher window on startup: {error}");
                 }
@@ -216,6 +219,7 @@ pub fn run() {
             set_logging_enabled,
             open_logs_folder,
             reveal_window,
+            unlock_media_autoplay,
             logging::list_log_bundles,
             logging::read_log_bundle
         ])
@@ -238,6 +242,9 @@ pub fn run() {
                 if let Err(error) = macos::allow_media_autoplay(&window) {
                     log::warn!(target: "launcher", "{error}");
                 }
+                if let Err(error) = macos::unlock_media_autoplay(&window) {
+                    log::warn!(target: "launcher", "{error}");
+                }
                 if let Err(error) = macos::activate_and_focus_window(&window) {
                     log::warn!(target: "launcher", "Could not focus launcher window on ready: {error}");
                 }

src-tauri/src/macos.rs

@@ -197,6 +197,70 @@ pub fn allow_media_autoplay(window: &tauri::WebviewWindow) -> Result<(), String>
         .map_err(|error| format!("Could not enable theme media autoplay: {error}"))
 }
 
+/// Programmatically unlock media autoplay with unmuted sound using WebKit's
+/// user gesture SPI and media resumption APIs.
+pub fn unlock_media_autoplay(window: &tauri::WebviewWindow) -> Result<(), String> {
+    use objc2::msg_send;
+    use objc2::runtime::AnyObject;
+    use std::ffi::CString;
+
+    window
+        .with_webview(|webview| unsafe {
+            let webview = webview.inner() as *mut AnyObject;
+            if webview.is_null() {
+                return;
+            }
+
+            // 1. Resume all media playback
+            let sel_resume = objc2::sel!(_resumeAllMediaPlayback);
+            if msg_send![webview, respondsToSelector: sel_resume] {
+                let _: () = msg_send![webview, _resumeAllMediaPlayback];
+            } else {
+                let sel_resume_pub = objc2::sel!(resumeAllMediaPlayback:);
+                if msg_send![webview, respondsToSelector: sel_resume_pub] {
+                    let _: () = msg_send![
+                        webview,
+                        resumeAllMediaPlayback: std::ptr::null_mut::<AnyObject>()
+                    ];
+                }
+            }
+
+            // 2. Evaluate unmuted media play script with explicit user gesture SPI
+            let sel_eval = objc2::sel!(
+                _evaluateJavaScript:withSourceURL:inFrame:inContentWorld:withUserGesture:completionHandler:
+            );
+            if msg_send![webview, respondsToSelector: sel_eval] {
+                let script_str = match CString::new(
+                    "document.querySelectorAll('video, audio').forEach(function(el) { \
+                        el.muted = false; \
+                        var p = el.play(); \
+                        if (p !== undefined) p.catch(function() {}); \
+                    });",
+                ) {
+                    Ok(s) => s,
+                    Err(_) => return,
+                };
+
+                let ns_script: *mut AnyObject =
+                    msg_send![objc2::class!(NSString), stringWithUTF8String: script_str.as_ptr()];
+                let page_world: *mut AnyObject =
+                    msg_send![objc2::class!(WKContentWorld), pageWorld];
+
+                let _: () = msg_send![
+                    webview,
+                    _evaluateJavaScript: ns_script,
+                    withSourceURL: std::ptr::null_mut::<AnyObject>(),
+                    inFrame: std::ptr::null_mut::<AnyObject>(),
+                    inContentWorld: page_world,
+                    withUserGesture: true,
+                    completionHandler: std::ptr::null_mut::<AnyObject>()
+                ];
+                log::debug!(target: "launcher", "Unlocked theme media autoplay with user gesture SPI");
+            }
+        })
+        .map_err(|error| format!("Could not unlock theme media autoplay: {error}"))
+}
+
 /// Show a native open panel that accepts `.app` bundles as well as folders.
 ///
 /// AppKit treats application bundles as packages (directories) by default, so a