1 files changed, 42 insertions, 0 deletions
diff --git a/toolkit/actors/AudioPlaybackParent.sys.mjs b/toolkit/actors/AudioPlaybackParent.sys.mjs
new file mode 100644
index 0000000000..db682fd90b
--- /dev/null
+++ b/toolkit/actors/AudioPlaybackParent.sys.mjs
@@ -0,0 +1,42 @@
+/* vim: set ts=2 sw=2 sts=2 et tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+export class AudioPlaybackParent extends JSWindowActorParent {
+  constructor() {
+    super();
+    this._hasAudioPlayback = false;
+    this._hasBlockMedia = false;
+  }
+  receiveMessage(aMessage) {
+    const browser = this.browsingContext.top.embedderElement;
+    switch (aMessage.name) {
+      case "AudioPlayback:Start":
+        this._hasAudioPlayback = true;
+        browser.audioPlaybackStarted();
+        break;
+      case "AudioPlayback:Stop":
+        this._hasAudioPlayback = false;
+        browser.audioPlaybackStopped();
+        break;
+      case "AudioPlayback:ActiveMediaBlockStart":
+        this._hasBlockMedia = true;
+        browser.activeMediaBlockStarted();
+        break;
+      case "AudioPlayback:ActiveMediaBlockStop":
+        this._hasBlockMedia = false;
+        browser.activeMediaBlockStopped();
+        break;
+    }
+  }
+  didDestroy() {
+    const browser = this.browsingContext.top.embedderElement;
+    if (browser && this._hasAudioPlayback) {
+      browser.audioPlaybackStopped();
+    }
+    if (browser && this._hasBlockMedia) {
+      browser.activeMediaBlockStopped();
+    }
+  }
+}